platform/kernel/linux-starfive.git
3 years agoMerge tag 'x86_urgent_for_v5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 6 Jun 2021 19:25:43 +0000 (12:25 -0700)]
Merge tag 'x86_urgent_for_v5.13-rc5' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:
 "A bunch of x86/urgent stuff accumulated for the last two weeks so
  lemme unload it to you.

  It should be all totally risk-free, of course. :-)

   - Fix out-of-spec hardware (1st gen Hygon) which does not implement
     MSR_AMD64_SEV even though the spec clearly states so, and check
     CPUID bits first.

   - Send only one signal to a task when it is a SEGV_PKUERR si_code
     type.

   - Do away with all the wankery of reserving X amount of memory in the
     first megabyte to prevent BIOS corrupting it and simply and
     unconditionally reserve the whole first megabyte.

   - Make alternatives NOP optimization work at an arbitrary position
     within the patched sequence because the compiler can put
     single-byte NOPs for alignment anywhere in the sequence (32-bit
     retpoline), vs our previous assumption that the NOPs are only
     appended.

   - Force-disable ENQCMD[S] instructions support and remove
     update_pasid() because of insufficient protection against FPU state
     modification in an interrupt context, among other xstate horrors
     which are being addressed at the moment. This one limits the
     fallout until proper enablement.

   - Use cpu_feature_enabled() in the idxd driver so that it can be
     build-time disabled through the defines in disabled-features.h.

   - Fix LVT thermal setup for SMI delivery mode by making sure the APIC
     LVT value is read before APIC initialization so that softlockups
     during boot do not happen at least on one machine.

   - Mark all legacy interrupts as legacy vectors when the IO-APIC is
     disabled and when all legacy interrupts are routed through the PIC"

* tag 'x86_urgent_for_v5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sev: Check SME/SEV support in CPUID first
  x86/fault: Don't send SIGSEGV twice on SEGV_PKUERR
  x86/setup: Always reserve the first 1M of RAM
  x86/alternative: Optimize single-byte NOPs at an arbitrary position
  x86/cpufeatures: Force disable X86_FEATURE_ENQCMD and remove update_pasid()
  dmaengine: idxd: Use cpu_feature_enabled()
  x86/thermal: Fix LVT thermal setup for SMI delivery mode
  x86/apic: Mark _all_ legacy interrupts when IO/APIC is missing

3 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 5 Jun 2021 22:45:11 +0000 (15:45 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Some more bugfixes from I2C for v5.13. Usual stuff"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM ops
  i2c: qcom-geni: Add shutdown callback for i2c
  i2c: tegra-bpmp: Demote kernel-doc abuses
  i2c: altera: Fix formatting issue in struct and demote unworthy kernel-doc headers

3 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Sat, 5 Jun 2021 17:55:41 +0000 (10:55 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "13 patches.

  Subsystems affected by this patch series: mips, mm (kfence, debug,
  pagealloc, memory-hotplug, hugetlb, kasan, and hugetlb), init, proc,
  lib, ocfs2, and mailmap"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mailmap: use private address for Michel Lespinasse
  ocfs2: fix data corruption by fallocate
  lib: crc64: fix kernel-doc warning
  mm, hugetlb: fix simple resv_huge_pages underflow on UFFDIO_COPY
  mm/kasan/init.c: fix doc warning
  proc: add .gitignore for proc-subset-pid selftest
  hugetlb: pass head page to remove_hugetlb_page()
  drivers/base/memory: fix trying offlining memory blocks with memory holes on aarch64
  mm/page_alloc: fix counting of free pages after take off from buddy
  mm/debug_vm_pgtable: fix alignment for pmd/pud_advanced_tests()
  pid: take a reference when initializing `cad_pid`
  kfence: use TASK_IDLE when awaiting allocation
  Revert "MIPS: make userspace mapping young by default"

3 years agoMerge tag 'riscv-for-linus-5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 5 Jun 2021 17:45:13 +0000 (10:45 -0700)]
Merge tag 'riscv-for-linus-5.13-rc5' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - Build with '-mno-relax' when using LLVM's linker, which doesn't
   support linker relaxation.

 - A fix to build without SiFive's errata.

 - A fix to use PAs during init_resources()

 - A fix to avoid W+X mappings during boot.

* tag 'riscv-for-linus-5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  RISC-V: Fix memblock_free() usages in init_resources()
  riscv: skip errata_cip_453.o if CONFIG_ERRATA_SIFIVE_CIP_453 is disabled
  riscv: mm: Fix W+X mappings at boot
  riscv: Use -mno-relax when using lld linker

3 years agomailmap: use private address for Michel Lespinasse
Michel Lespinasse [Sat, 5 Jun 2021 03:01:45 +0000 (20:01 -0700)]
mailmap: use private address for Michel Lespinasse

Link: https://lkml.kernel.org/r/20210602221225.49446-1-michel@lespinasse.org
Signed-off-by: Michel Lespinasse <michel@lespinasse.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoocfs2: fix data corruption by fallocate
Junxiao Bi [Sat, 5 Jun 2021 03:01:42 +0000 (20:01 -0700)]
ocfs2: fix data corruption by fallocate

When fallocate punches holes out of inode size, if original isize is in
the middle of last cluster, then the part from isize to the end of the
cluster will be zeroed with buffer write, at that time isize is not yet
updated to match the new size, if writeback is kicked in, it will invoke
ocfs2_writepage()->block_write_full_page() where the pages out of inode
size will be dropped.  That will cause file corruption.  Fix this by
zero out eof blocks when extending the inode size.

Running the following command with qemu-image 4.2.1 can get a corrupted
coverted image file easily.

    qemu-img convert -p -t none -T none -f qcow2 $qcow_image \
             -O qcow2 -o compat=1.1 $qcow_image.conv

The usage of fallocate in qemu is like this, it first punches holes out
of inode size, then extend the inode size.

    fallocate(11, FALLOC_FL_KEEP_SIZE|FALLOC_FL_PUNCH_HOLE, 2276196352, 65536) = 0
    fallocate(11, 0, 2276196352, 65536) = 0

v1: https://www.spinics.net/lists/linux-fsdevel/msg193999.html
v2: https://lore.kernel.org/linux-fsdevel/20210525093034.GB4112@quack2.suse.cz/T/

Link: https://lkml.kernel.org/r/20210528210648.9124-1-junxiao.bi@oracle.com
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agolib: crc64: fix kernel-doc warning
YueHaibing [Sat, 5 Jun 2021 03:01:39 +0000 (20:01 -0700)]
lib: crc64: fix kernel-doc warning

Fix W=1 kernel build warning:

  lib/crc64.c:40: warning:
   bad line:         or the previous crc64 value if computing incrementally.

Link: https://lkml.kernel.org/r/20210601135851.15444-1-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Coly Li <colyli@suse.de>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm, hugetlb: fix simple resv_huge_pages underflow on UFFDIO_COPY
Mina Almasry [Sat, 5 Jun 2021 03:01:36 +0000 (20:01 -0700)]
mm, hugetlb: fix simple resv_huge_pages underflow on UFFDIO_COPY

The userfaultfd hugetlb tests cause a resv_huge_pages underflow.  This
happens when hugetlb_mcopy_atomic_pte() is called with !is_continue on
an index for which we already have a page in the cache.  When this
happens, we allocate a second page, double consuming the reservation,
and then fail to insert the page into the cache and return -EEXIST.

To fix this, we first check if there is a page in the cache which
already consumed the reservation, and return -EEXIST immediately if so.

There is still a rare condition where we fail to copy the page contents
AND race with a call for hugetlb_no_page() for this index and again we
will underflow resv_huge_pages.  That is fixed in a more complicated
patch not targeted for -stable.

Test:

  Hacked the code locally such that resv_huge_pages underflows produce a
  warning, then:

  ./tools/testing/selftests/vm/userfaultfd hugetlb_shared 10
2 /tmp/kokonut_test/huge/userfaultfd_test && echo test success
  ./tools/testing/selftests/vm/userfaultfd hugetlb 10
2 /tmp/kokonut_test/huge/userfaultfd_test && echo test success

Both tests succeed and produce no warnings.  After the test runs number
of free/resv hugepages is correct.

[mike.kravetz@oracle.com: changelog fixes]

Link: https://lkml.kernel.org/r/20210528004649.85298-1-almasrymina@google.com
Fixes: 8fb5debc5fcd ("userfaultfd: hugetlbfs: add hugetlb_mcopy_atomic_pte for userfaultfd support")
Signed-off-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/kasan/init.c: fix doc warning
Yu Kuai [Sat, 5 Jun 2021 03:01:33 +0000 (20:01 -0700)]
mm/kasan/init.c: fix doc warning

Fix gcc W=1 warning:

  mm/kasan/init.c:228: warning: Function parameter or member 'shadow_start' not described in 'kasan_populate_early_shadow'
  mm/kasan/init.c:228: warning: Function parameter or member 'shadow_end' not described in 'kasan_populate_early_shadow'

Link: https://lkml.kernel.org/r/20210603140700.3045298-1-yukuai3@huawei.com
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Acked-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoproc: add .gitignore for proc-subset-pid selftest
David Matlack [Sat, 5 Jun 2021 03:01:30 +0000 (20:01 -0700)]
proc: add .gitignore for proc-subset-pid selftest

This new selftest needs an entry in the .gitignore file otherwise git
will try to track the binary.

Link: https://lkml.kernel.org/r/20210601164305.11776-1-dmatlack@google.com
Fixes: 268af17ada5855 ("selftests: proc: test subset=pid")
Signed-off-by: David Matlack <dmatlack@google.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alexey Gladkov <gladkov.alexey@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agohugetlb: pass head page to remove_hugetlb_page()
Naoya Horiguchi [Sat, 5 Jun 2021 03:01:27 +0000 (20:01 -0700)]
hugetlb: pass head page to remove_hugetlb_page()

When memory_failure() or soft_offline_page() is called on a tail page of
some hugetlb page, "BUG: unable to handle page fault" error can be
triggered.

remove_hugetlb_page() dereferences page->lru, so it's assumed that the
page points to a head page, but one of the caller,
dissolve_free_huge_page(), provides remove_hugetlb_page() with 'page'
which could be a tail page.  So pass 'head' to it, instead.

Link: https://lkml.kernel.org/r/20210526235257.2769473-1-nao.horiguchi@gmail.com
Fixes: 6eb4e88a6d27 ("hugetlb: create remove_hugetlb_page() to separate functionality")
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agodrivers/base/memory: fix trying offlining memory blocks with memory holes on aarch64
David Hildenbrand [Sat, 5 Jun 2021 03:01:24 +0000 (20:01 -0700)]
drivers/base/memory: fix trying offlining memory blocks with memory holes on aarch64

offline_pages() properly checks for memory holes and bails out.
However, we do a page_zone(pfn_to_page(start_pfn)) before calling
offline_pages() when offlining a memory block.

We should not unconditionally call page_zone(pfn_to_page(start_pfn)) on
aarch64 in offlining code, otherwise we can trigger a BUG when hitting a
memory hole:

   kernel BUG at include/linux/mm.h:1383!
   Internal error: Oops - BUG: 0 [#1] SMP
   Modules linked in: loop processor efivarfs ip_tables x_tables ext4 mbcache jbd2 dm_mod igb nvme i2c_algo_bit mlx5_core i2c_core nvme_core firmware_class
   CPU: 13 PID: 1694 Comm: ranbug Not tainted 5.12.0-next-20210524+ #4
   Hardware name: MiTAC RAPTOR EV-883832-X3-0001/RAPTOR, BIOS 1.6 06/28/2020
   pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--)
   pc : memory_subsys_offline+0x1f8/0x250
   lr : memory_subsys_offline+0x1f8/0x250
   Call trace:
     memory_subsys_offline+0x1f8/0x250
     device_offline+0x154/0x1d8
     online_store+0xa4/0x118
     dev_attr_store+0x44/0x78
     sysfs_kf_write+0xe8/0x138
     kernfs_fop_write_iter+0x26c/0x3d0
     new_sync_write+0x2bc/0x4f8
     vfs_write+0x718/0xc88
     ksys_write+0xf8/0x1e0
     __arm64_sys_write+0x74/0xa8
     invoke_syscall.constprop.0+0x78/0x1e8
     do_el0_svc+0xe4/0x298
     el0_svc+0x20/0x30
     el0_sync_handler+0xb0/0xb8
     el0_sync+0x178/0x180
   Kernel panic - not syncing: Oops - BUG: Fatal exception
   SMP: stopping secondary CPUs
   Kernel Offset: disabled
   CPU features: 0x00000251,20000846
   Memory Limit: none

If nr_vmemmap_pages is set, we know that we are dealing with hotplugged
memory that doesn't have any holes.  So call
page_zone(pfn_to_page(start_pfn)) only when really necessary -- when
nr_vmemmap_pages is set and we actually adjust the present pages.

Link: https://lkml.kernel.org/r/20210526075226.5572-1-david@redhat.com
Fixes: a08a2ae34613 ("mm,memory_hotplug: allocate memmap from the added memory range")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reported-by: Qian Cai (QUIC) <quic_qiancai@quicinc.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/page_alloc: fix counting of free pages after take off from buddy
Ding Hui [Sat, 5 Jun 2021 03:01:21 +0000 (20:01 -0700)]
mm/page_alloc: fix counting of free pages after take off from buddy

Recently we found that there is a lot MemFree left in /proc/meminfo
after do a lot of pages soft offline, it's not quite correct.

Before Oscar's rework of soft offline for free pages [1], if we soft
offline free pages, these pages are left in buddy with HWPoison flag,
and NR_FREE_PAGES is not updated immediately.  So the difference between
NR_FREE_PAGES and real number of available free pages is also even big
at the beginning.

However, with the workload running, when we catch HWPoison page in any
alloc functions subsequently, we will remove it from buddy, meanwhile
update the NR_FREE_PAGES and try again, so the NR_FREE_PAGES will get
more and more closer to the real number of available free pages.
(regardless of unpoison_memory())

Now, for offline free pages, after a successful call
take_page_off_buddy(), the page is no longer belong to buddy allocator,
and will not be used any more, but we missed accounting NR_FREE_PAGES in
this situation, and there is no chance to be updated later.

Do update in take_page_off_buddy() like rmqueue() does, but avoid double
counting if some one already set_migratetype_isolate() on the page.

[1]: commit 06be6ff3d2ec ("mm,hwpoison: rework soft offline for free pages")

Link: https://lkml.kernel.org/r/20210526075247.11130-1-dinghui@sangfor.com.cn
Fixes: 06be6ff3d2ec ("mm,hwpoison: rework soft offline for free pages")
Signed-off-by: Ding Hui <dinghui@sangfor.com.cn>
Suggested-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/debug_vm_pgtable: fix alignment for pmd/pud_advanced_tests()
Gerald Schaefer [Sat, 5 Jun 2021 03:01:18 +0000 (20:01 -0700)]
mm/debug_vm_pgtable: fix alignment for pmd/pud_advanced_tests()

In pmd/pud_advanced_tests(), the vaddr is aligned up to the next pmd/pud
entry, and so it does not match the given pmdp/pudp and (aligned down)
pfn any more.

For s390, this results in memory corruption, because the IDTE
instruction used e.g.  in xxx_get_and_clear() will take the vaddr for
some calculations, in combination with the given pmdp.  It will then end
up with a wrong table origin, ending on ...ff8, and some of those
wrongly set low-order bits will also select a wrong pagetable level for
the index addition.  IDTE could therefore invalidate (or 0x20) something
outside of the page tables, depending on the wrongly picked index, which
in turn depends on the random vaddr.

As result, we sometimes see "BUG task_struct (Not tainted): Padding
overwritten" on s390, where one 0x5a padding value got overwritten with
0x7a.

Fix this by aligning down, similar to how the pmd/pud_aligned pfns are
calculated.

Link: https://lkml.kernel.org/r/20210525130043.186290-2-gerald.schaefer@linux.ibm.com
Fixes: a5c3b9ffb0f40 ("mm/debug_vm_pgtable: add tests validating advanced arch page table helpers")
Signed-off-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: <stable@vger.kernel.org> [5.9+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agopid: take a reference when initializing `cad_pid`
Mark Rutland [Sat, 5 Jun 2021 03:01:14 +0000 (20:01 -0700)]
pid: take a reference when initializing `cad_pid`

During boot, kernel_init_freeable() initializes `cad_pid` to the init
task's struct pid.  Later on, we may change `cad_pid` via a sysctl, and
when this happens proc_do_cad_pid() will increment the refcount on the
new pid via get_pid(), and will decrement the refcount on the old pid
via put_pid().  As we never called get_pid() when we initialized
`cad_pid`, we decrement a reference we never incremented, can therefore
free the init task's struct pid early.  As there can be dangling
references to the struct pid, we can later encounter a use-after-free
(e.g.  when delivering signals).

This was spotted when fuzzing v5.13-rc3 with Syzkaller, but seems to
have been around since the conversion of `cad_pid` to struct pid in
commit 9ec52099e4b8 ("[PATCH] replace cad_pid by a struct pid") from the
pre-KASAN stone age of v2.6.19.

Fix this by getting a reference to the init task's struct pid when we
assign it to `cad_pid`.

Full KASAN splat below.

   ==================================================================
   BUG: KASAN: use-after-free in ns_of_pid include/linux/pid.h:153 [inline]
   BUG: KASAN: use-after-free in task_active_pid_ns+0xc0/0xc8 kernel/pid.c:509
   Read of size 4 at addr ffff23794dda0004 by task syz-executor.0/273

   CPU: 1 PID: 273 Comm: syz-executor.0 Not tainted 5.12.0-00001-g9aef892b2d15 #1
   Hardware name: linux,dummy-virt (DT)
   Call trace:
    ns_of_pid include/linux/pid.h:153 [inline]
    task_active_pid_ns+0xc0/0xc8 kernel/pid.c:509
    do_notify_parent+0x308/0xe60 kernel/signal.c:1950
    exit_notify kernel/exit.c:682 [inline]
    do_exit+0x2334/0x2bd0 kernel/exit.c:845
    do_group_exit+0x108/0x2c8 kernel/exit.c:922
    get_signal+0x4e4/0x2a88 kernel/signal.c:2781
    do_signal arch/arm64/kernel/signal.c:882 [inline]
    do_notify_resume+0x300/0x970 arch/arm64/kernel/signal.c:936
    work_pending+0xc/0x2dc

   Allocated by task 0:
    slab_post_alloc_hook+0x50/0x5c0 mm/slab.h:516
    slab_alloc_node mm/slub.c:2907 [inline]
    slab_alloc mm/slub.c:2915 [inline]
    kmem_cache_alloc+0x1f4/0x4c0 mm/slub.c:2920
    alloc_pid+0xdc/0xc00 kernel/pid.c:180
    copy_process+0x2794/0x5e18 kernel/fork.c:2129
    kernel_clone+0x194/0x13c8 kernel/fork.c:2500
    kernel_thread+0xd4/0x110 kernel/fork.c:2552
    rest_init+0x44/0x4a0 init/main.c:687
    arch_call_rest_init+0x1c/0x28
    start_kernel+0x520/0x554 init/main.c:1064
    0x0

   Freed by task 270:
    slab_free_hook mm/slub.c:1562 [inline]
    slab_free_freelist_hook+0x98/0x260 mm/slub.c:1600
    slab_free mm/slub.c:3161 [inline]
    kmem_cache_free+0x224/0x8e0 mm/slub.c:3177
    put_pid.part.4+0xe0/0x1a8 kernel/pid.c:114
    put_pid+0x30/0x48 kernel/pid.c:109
    proc_do_cad_pid+0x190/0x1b0 kernel/sysctl.c:1401
    proc_sys_call_handler+0x338/0x4b0 fs/proc/proc_sysctl.c:591
    proc_sys_write+0x34/0x48 fs/proc/proc_sysctl.c:617
    call_write_iter include/linux/fs.h:1977 [inline]
    new_sync_write+0x3ac/0x510 fs/read_write.c:518
    vfs_write fs/read_write.c:605 [inline]
    vfs_write+0x9c4/0x1018 fs/read_write.c:585
    ksys_write+0x124/0x240 fs/read_write.c:658
    __do_sys_write fs/read_write.c:670 [inline]
    __se_sys_write fs/read_write.c:667 [inline]
    __arm64_sys_write+0x78/0xb0 fs/read_write.c:667
    __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
    invoke_syscall arch/arm64/kernel/syscall.c:49 [inline]
    el0_svc_common.constprop.1+0x16c/0x388 arch/arm64/kernel/syscall.c:129
    do_el0_svc+0xf8/0x150 arch/arm64/kernel/syscall.c:168
    el0_svc+0x28/0x38 arch/arm64/kernel/entry-common.c:416
    el0_sync_handler+0x134/0x180 arch/arm64/kernel/entry-common.c:432
    el0_sync+0x154/0x180 arch/arm64/kernel/entry.S:701

   The buggy address belongs to the object at ffff23794dda0000
    which belongs to the cache pid of size 224
   The buggy address is located 4 bytes inside of
    224-byte region [ffff23794dda0000ffff23794dda00e0)
   The buggy address belongs to the page:
   page:(____ptrval____) refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4dda0
   head:(____ptrval____) order:1 compound_mapcount:0
   flags: 0x3fffc0000010200(slab|head)
   raw: 03fffc0000010200 dead000000000100 dead000000000122 ffff23794d40d080
   raw: 0000000000000000 0000000000190019 00000001ffffffff 0000000000000000
   page dumped because: kasan: bad access detected

   Memory state around the buggy address:
    ffff23794dd9ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
    ffff23794dd9ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
   >ffff23794dda0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
    ffff23794dda0080: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
    ffff23794dda0100: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
   ==================================================================

Link: https://lkml.kernel.org/r/20210524172230.38715-1-mark.rutland@arm.com
Fixes: 9ec52099e4b8678a ("[PATCH] replace cad_pid by a struct pid")
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Christian Brauner <christian@brauner.io>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Kees Cook <keescook@chromium.org
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agokfence: use TASK_IDLE when awaiting allocation
Marco Elver [Sat, 5 Jun 2021 03:01:11 +0000 (20:01 -0700)]
kfence: use TASK_IDLE when awaiting allocation

Since wait_event() uses TASK_UNINTERRUPTIBLE by default, waiting for an
allocation counts towards load.  However, for KFENCE, this does not make
any sense, since there is no busy work we're awaiting.

Instead, use TASK_IDLE via wait_event_idle() to not count towards load.

BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1185565
Link: https://lkml.kernel.org/r/20210521083209.3740269-1-elver@google.com
Fixes: 407f1d8c1b5f ("kfence: await for allocation using wait_event")
Signed-off-by: Marco Elver <elver@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Hillf Danton <hdanton@sina.com>
Cc: <stable@vger.kernel.org> [5.12+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoRevert "MIPS: make userspace mapping young by default"
Thomas Bogendoerfer [Sat, 5 Jun 2021 03:01:08 +0000 (20:01 -0700)]
Revert "MIPS: make userspace mapping young by default"

This reverts commit f685a533a7fab35c5d069dcd663f59c8e4171a75.

The MIPS cache flush logic needs to know whether the mapping was already
established to decide how to flush caches.  This is done by checking the
valid bit in the PTE.  The commit above breaks this logic by setting the
valid in the PTE in new mappings, which causes kernel crashes.

Link: https://lkml.kernel.org/r/20210526094335.92948-1-tsbogend@alpha.franken.de
Fixes: f685a533a7f ("MIPS: make userspace mapping young by default")
Reported-by: Zhou Yanjie <zhouyanjie@wanyeetech.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Huang Pei <huangpei@loongson.cn>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'net-5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Sat, 5 Jun 2021 01:25:39 +0000 (18:25 -0700)]
Merge tag 'net-5.13-rc5' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Networking fixes, including fixes from bpf, wireless, netfilter and
  wireguard trees.

  The bpf vs lockdown+audit fix is the most notable.

  Things haven't slowed down just yet, both in terms of regressions in
  current release and largish fixes for older code, but we usually see a
  slowdown only after -rc5.

  Current release - regressions:

   - virtio-net: fix page faults and crashes when XDP is enabled

   - mlx5e: fix HW timestamping with CQE compression, and make sure they
     are only allowed to coexist with capable devices

   - stmmac:
      - fix kernel panic due to NULL pointer dereference of
        mdio_bus_data
      - fix double clk unprepare when no PHY device is connected

  Current release - new code bugs:

   - mt76: a few fixes for the recent MT7921 devices and runtime power
     management

  Previous releases - regressions:

   - ice:
      - track AF_XDP ZC enabled queues in bitmap to fix copy mode Tx
      - fix allowing VF to request more/less queues via virtchnl
      - correct supported and advertised autoneg by using PHY
        capabilities
      - allow all LLDP packets from PF to Tx

   - kbuild: quote OBJCOPY var to avoid a pahole call break the build

  Previous releases - always broken:

   - bpf, lockdown, audit: fix buggy SELinux lockdown permission checks

   - mt76: address the recent FragAttack vulnerabilities not covered by
     generic fixes

   - ipv6: fix KASAN: slab-out-of-bounds Read in
     fib6_nh_flush_exceptions

   - Bluetooth:
      - fix the erroneous flush_work() order, to avoid double free
      - use correct lock to prevent UAF of hdev object

   - nfc: fix NULL ptr dereference in llcp_sock_getname() after failed
     connect

   - ieee802154: multiple fixes to error checking and return values

   - igb: fix XDP with PTP enabled

   - intel: add correct exception tracing for XDP

   - tls: fix use-after-free when TLS offload device goes down and back
     up

   - ipvs: ignore IP_VS_SVC_F_HASHED flag when adding service

   - netfilter: nft_ct: skip expectations for confirmed conntrack

   - mptcp: fix falling back to TCP in presence of out of order packets
     early in connection lifetime

   - wireguard: switch from O(n) to a O(1) algorithm for maintaining
     peers, fixing stalls and a large memory leak in the process

  Misc:

   - devlink: correct VIRTUAL port to not have phys_port attributes

   - Bluetooth: fix VIRTIO_ID_BT assigned number

   - net: return the correct errno code ENOBUF -> ENOMEM

   - wireguard:
      - peer: allocate in kmem_cache saving 25% on peer memory
      - do not use -O3"

* tag 'net-5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (91 commits)
  cxgb4: avoid link re-train during TC-MQPRIO configuration
  sch_htb: fix refcount leak in htb_parent_to_leaf_offload
  wireguard: allowedips: free empty intermediate nodes when removing single node
  wireguard: allowedips: allocate nodes in kmem_cache
  wireguard: allowedips: remove nodes in O(1)
  wireguard: allowedips: initialize list head in selftest
  wireguard: peer: allocate in kmem_cache
  wireguard: use synchronize_net rather than synchronize_rcu
  wireguard: do not use -O3
  wireguard: selftests: make sure rp_filter is disabled on vethc
  wireguard: selftests: remove old conntrack kconfig value
  virtchnl: Add missing padding to virtchnl_proto_hdrs
  ice: Allow all LLDP packets from PF to Tx
  ice: report supported and advertised autoneg using PHY capabilities
  ice: handle the VF VSI rebuild failure
  ice: Fix VFR issues for AVF drivers that expect ATQLEN cleared
  ice: Fix allowing VF to request more/less queues via virtchnl
  virtio-net: fix for skb_over_panic inside big mode
  ipv6: Fix KASAN: slab-out-of-bounds Read in fib6_nh_flush_exceptions
  fib: Return the correct errno code
  ...

3 years agoMerge tag 'perf-tools-fixes-for-v5.13-2021-06-04' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sat, 5 Jun 2021 01:15:33 +0000 (18:15 -0700)]
Merge tag 'perf-tools-fixes-for-v5.13-2021-06-04' of git://git./linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix NULL pointer dereference in 'perf probe' when handling
   DW_AT_const_value when looking for a variable, which is valid.

 - Fix for capability querying of perf_event_attr.cgroup support in
   older kernels.

 - Add missing cloning of evsel->use_config_name.

 - Honor event config name on --no-merge in 'perf stat'.

 - Fix some memory leaks found using ASAN.

 - Fix the perf entry for perf_event_attr setup with make LIBPFM4=1 on
   s390 z/VM.

 - Update MIPS UAPI perf_regs.h file.

 - Fix 'perf stat' BPF counter load return check.

* tag 'perf-tools-fixes-for-v5.13-2021-06-04' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf env: Fix memory leak of bpf_prog_info_linear member
  perf symbol-elf: Fix memory leak by freeing sdt_note.args
  perf stat: Honor event config name on --no-merge
  perf evsel: Add missing cloning of evsel->use_config_name
  perf test: Test 17 fails with make LIBPFM4=1 on s390 z/VM
  perf stat: Fix error return code in bperf__load()
  perf record: Move probing cgroup sampling support
  perf probe: Fix NULL pointer dereference in convert_variable_location()
  perf tools: Copy uapi/asm/perf_regs.h from the kernel for MIPS

3 years agoMerge tag 'pci-v5.13-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Fri, 4 Jun 2021 22:19:45 +0000 (15:19 -0700)]
Merge tag 'pci-v5.13-fixes-1' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Fix MSIs for platforms with "msi-map" device-tree property, which we
   broke in v5.13-rc1 (Jean-Philippe Brucker)

 - Add Krzysztof Wilczyński as PCI reviewer (Lorenzo Pieralisi)

* tag 'pci-v5.13-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/MSI: Fix MSIs for generic hosts that use device-tree's "msi-map"
  MAINTAINERS: Add Krzysztof as PCI host/endpoint controllers reviewer

3 years agocxgb4: avoid link re-train during TC-MQPRIO configuration
Rahul Lakkireddy [Fri, 4 Jun 2021 11:18:18 +0000 (16:48 +0530)]
cxgb4: avoid link re-train during TC-MQPRIO configuration

When configuring TC-MQPRIO offload, only turn off netdev carrier and
don't bring physical link down in hardware. Otherwise, when the
physical link is brought up again after configuration, it gets
re-trained and stalls ongoing traffic.

Also, when firmware is no longer accessible or crashed, avoid sending
FLOWC and waiting for reply that will never come.

Fix following hung_task_timeout_secs trace seen in these cases.

INFO: task tc:20807 blocked for more than 122 seconds.
      Tainted: G S                5.13.0-rc3+ #122
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:tc   state:D stack:14768 pid:20807 ppid: 19366 flags:0x00000000
Call Trace:
 __schedule+0x27b/0x6a0
 schedule+0x37/0xa0
 schedule_preempt_disabled+0x5/0x10
 __mutex_lock.isra.14+0x2a0/0x4a0
 ? netlink_lookup+0x120/0x1a0
 ? rtnl_fill_ifinfo+0x10f0/0x10f0
 __netlink_dump_start+0x70/0x250
 rtnetlink_rcv_msg+0x28b/0x380
 ? rtnl_fill_ifinfo+0x10f0/0x10f0
 ? rtnl_calcit.isra.42+0x120/0x120
 netlink_rcv_skb+0x4b/0xf0
 netlink_unicast+0x1a0/0x280
 netlink_sendmsg+0x216/0x440
 sock_sendmsg+0x56/0x60
 __sys_sendto+0xe9/0x150
 ? handle_mm_fault+0x6d/0x1b0
 ? do_user_addr_fault+0x1c5/0x620
 __x64_sys_sendto+0x1f/0x30
 do_syscall_64+0x3c/0x80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7f73218321
RSP: 002b:00007ffd19626208 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055b7c0a8b240 RCX: 00007f7f73218321
RDX: 0000000000000028 RSI: 00007ffd19626210 RDI: 0000000000000003
RBP: 000055b7c08680ff R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000055b7c085f5f6
R13: 000055b7c085f60a R14: 00007ffd19636470 R15: 00007ffd196262a0

Fixes: b1396c2bd675 ("cxgb4: parse and configure TC-MQPRIO offload")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agosch_htb: fix refcount leak in htb_parent_to_leaf_offload
Yunjian Wang [Fri, 4 Jun 2021 11:03:18 +0000 (19:03 +0800)]
sch_htb: fix refcount leak in htb_parent_to_leaf_offload

The commit ae81feb7338c ("sch_htb: fix null pointer dereference
on a null new_q") fixes a NULL pointer dereference bug, but it
is not correct.

Because htb_graft_helper properly handles the case when new_q
is NULL, and after the previous patch by skipping this call
which creates an inconsistency : dev_queue->qdisc will still
point to the old qdisc, but cl->parent->leaf.q will point to
the new one (which will be noop_qdisc, because new_q was NULL).
The code is based on an assumption that these two pointers are
the same, so it can lead to refcount leaks.

The correct fix is to add a NULL pointer check to protect
qdisc_refcount_inc inside htb_parent_to_leaf_offload.

Fixes: ae81feb7338c ("sch_htb: fix null pointer dereference on a null new_q")
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Suggested-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net...
David S. Miller [Fri, 4 Jun 2021 21:27:07 +0000 (14:27 -0700)]
Merge branch '100GbE' of git://git./linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2021-06-04

This series contains updates to virtchnl header file and ice driver.

Brett fixes VF being unable to request a different number of queues then
allocated and adds clearing of VF_MBX_ATQLEN register for VF reset.

Haiyue handles error of rebuilding VF VSI during reset.

Paul fixes reporting of autoneg to use the PHY capabilities.

Dave allows LLDP packets without priority of TC_PRIO_CONTROL to be
transmitted.

Geert Uytterhoeven adds explicit padding to virtchnl_proto_hdrs
structure in the virtchnl header file.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'wireguard-fixes'
David S. Miller [Fri, 4 Jun 2021 21:25:14 +0000 (14:25 -0700)]
Merge branch 'wireguard-fixes'

Jason A. Donenfeld says:

====================
wireguard fixes for 5.13-rc5

Here are bug fixes to WireGuard for 5.13-rc5:

1-2,6) These are small, trivial tweaks to our test harness.

3) Linus thinks -O3 is still dangerous to enable. The code gen wasn't so
   much different with -O2 either.

4) We were accidentally calling synchronize_rcu instead of
   synchronize_net while holding the rtnl_lock, resulting in some rather
   large stalls that hit production machines.

5) Peer allocation was wasting literally hundreds of megabytes on real
   world deployments, due to oddly sized large objects not fitting
   nicely into a kmalloc slab.

7-9) We move from an insanely expensive O(n) algorithm to a fast O(1)
     algorithm, and cleanup a massive memory leak in the process, in
     which allowed ips churn would leave danging nodes hanging around
     without cleanup until the interface was removed. The O(1) algorithm
     eliminates packet stalls and high latency issues, in addition to
     bringing operations that took as much as 10 minutes down to less
     than a second.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agowireguard: allowedips: free empty intermediate nodes when removing single node
Jason A. Donenfeld [Fri, 4 Jun 2021 15:17:38 +0000 (17:17 +0200)]
wireguard: allowedips: free empty intermediate nodes when removing single node

When removing single nodes, it's possible that that node's parent is an
empty intermediate node, in which case, it too should be removed.
Otherwise the trie fills up and never is fully emptied, leading to
gradual memory leaks over time for tries that are modified often. There
was originally code to do this, but was removed during refactoring in
2016 and never reworked. Now that we have proper parent pointers from
the previous commits, we can implement this properly.

In order to reduce branching and expensive comparisons, we want to keep
the double pointer for parent assignment (which lets us easily chain up
to the root), but we still need to actually get the parent's base
address. So encode the bit number into the last two bits of the pointer,
and pack and unpack it as needed. This is a little bit clumsy but is the
fastest and less memory wasteful of the compromises. Note that we align
the root struct here to a minimum of 4, because it's embedded into a
larger struct, and we're relying on having the bottom two bits for our
flag, which would only be 16-bit aligned on m68k.

The existing macro-based helpers were a bit unwieldy for adding the bit
packing to, so this commit replaces them with safer and clearer ordinary
functions.

We add a test to the randomized/fuzzer part of the selftests, to free
the randomized tries by-peer, refuzz it, and repeat, until it's supposed
to be empty, and then then see if that actually resulted in the whole
thing being emptied. That combined with kmemcheck should hopefully make
sure this commit is doing what it should. Along the way this resulted in
various other cleanups of the tests and fixes for recent graphviz.

Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agowireguard: allowedips: allocate nodes in kmem_cache
Jason A. Donenfeld [Fri, 4 Jun 2021 15:17:37 +0000 (17:17 +0200)]
wireguard: allowedips: allocate nodes in kmem_cache

The previous commit moved from O(n) to O(1) for removal, but in the
process introduced an additional pointer member to a struct that
increased the size from 60 to 68 bytes, putting nodes in the 128-byte
slab. With deployed systems having as many as 2 million nodes, this
represents a significant doubling in memory usage (128 MiB -> 256 MiB).
Fix this by using our own kmem_cache, that's sized exactly right. This
also makes wireguard's memory usage more transparent in tools like
slabtop and /proc/slabinfo.

Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agowireguard: allowedips: remove nodes in O(1)
Jason A. Donenfeld [Fri, 4 Jun 2021 15:17:36 +0000 (17:17 +0200)]
wireguard: allowedips: remove nodes in O(1)

Previously, deleting peers would require traversing the entire trie in
order to rebalance nodes and safely free them. This meant that removing
1000 peers from a trie with a half million nodes would take an extremely
long time, during which we're holding the rtnl lock. Large-scale users
were reporting 200ms latencies added to the networking stack as a whole
every time their userspace software would queue up significant removals.
That's a serious situation.

This commit fixes that by maintaining a double pointer to the parent's
bit pointer for each node, and then using the already existing node list
belonging to each peer to go directly to the node, fix up its pointers,
and free it with RCU. This means removal is O(1) instead of O(n), and we
don't use gobs of stack.

The removal algorithm has the same downside as the code that it fixes:
it won't collapse needlessly long runs of fillers.  We can enhance that
in the future if it ever becomes a problem. This commit documents that
limitation with a TODO comment in code, a small but meaningful
improvement over the prior situation.

Currently the biggest flaw, which the next commit addresses, is that
because this increases the node size on 64-bit machines from 60 bytes to
68 bytes. 60 rounds up to 64, but 68 rounds up to 128. So we wind up
using twice as much memory per node, because of power-of-two
allocations, which is a big bummer. We'll need to figure something out
there.

Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agowireguard: allowedips: initialize list head in selftest
Jason A. Donenfeld [Fri, 4 Jun 2021 15:17:35 +0000 (17:17 +0200)]
wireguard: allowedips: initialize list head in selftest

The randomized trie tests weren't initializing the dummy peer list head,
resulting in a NULL pointer dereference when used. Fix this by
initializing it in the randomized trie test, just like we do for the
static unit test.

While we're at it, all of the other strings like this have the word
"self-test", so add it to the missing place here.

Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agowireguard: peer: allocate in kmem_cache
Jason A. Donenfeld [Fri, 4 Jun 2021 15:17:34 +0000 (17:17 +0200)]
wireguard: peer: allocate in kmem_cache

With deployments having upwards of 600k peers now, this somewhat heavy
structure could benefit from more fine-grained allocations.
Specifically, instead of using a 2048-byte slab for a 1544-byte object,
we can now use 1544-byte objects directly, thus saving almost 25%
per-peer, or with 600k peers, that's a savings of 303 MiB. This also
makes wireguard's memory usage more transparent in tools like slabtop
and /proc/slabinfo.

Fixes: 8b5553ace83c ("wireguard: queueing: get rid of per-peer ring buffers")
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agowireguard: use synchronize_net rather than synchronize_rcu
Jason A. Donenfeld [Fri, 4 Jun 2021 15:17:33 +0000 (17:17 +0200)]
wireguard: use synchronize_net rather than synchronize_rcu

Many of the synchronization points are sometimes called under the rtnl
lock, which means we should use synchronize_net rather than
synchronize_rcu. Under the hood, this expands to using the expedited
flavor of function in the event that rtnl is held, in order to not stall
other concurrent changes.

This fixes some very, very long delays when removing multiple peers at
once, which would cause some operations to take several minutes.

Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agowireguard: do not use -O3
Jason A. Donenfeld [Fri, 4 Jun 2021 15:17:32 +0000 (17:17 +0200)]
wireguard: do not use -O3

Apparently, various versions of gcc have O3-related miscompiles. Looking
at the difference between -O2 and -O3 for gcc 11 doesn't indicate
miscompiles, but the difference also doesn't seem so significant for
performance that it's worth risking.

Link: https://lore.kernel.org/lkml/CAHk-=wjuoGyxDhAF8SsrTkN0-YfCx7E6jUN3ikC_tn2AKWTTsA@mail.gmail.com/
Link: https://lore.kernel.org/lkml/CAHmME9otB5Wwxp7H8bR_i2uH2esEMvoBMC8uEXBMH9p0q1s6Bw@mail.gmail.com/
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agowireguard: selftests: make sure rp_filter is disabled on vethc
Jason A. Donenfeld [Fri, 4 Jun 2021 15:17:31 +0000 (17:17 +0200)]
wireguard: selftests: make sure rp_filter is disabled on vethc

Some distros may enable strict rp_filter by default, which will prevent
vethc from receiving the packets with an unrouteable reverse path address.

Reported-by: Hangbin Liu <liuhangbin@gmail.com>
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agowireguard: selftests: remove old conntrack kconfig value
Jason A. Donenfeld [Fri, 4 Jun 2021 15:17:30 +0000 (17:17 +0200)]
wireguard: selftests: remove old conntrack kconfig value

On recent kernels, this config symbol is no longer used.

Reported-by: Rui Salvaterra <rsalvaterra@gmail.com>
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Cc: stable@vger.kernel.org
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoi2c: qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM ops
Roja Rani Yarubandi [Tue, 25 May 2021 13:10:51 +0000 (18:40 +0530)]
i2c: qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM ops

Mark bus as suspended during system suspend to block the future
transfers. Implement geni_i2c_resume_noirq() to resume the bus.

Fixes: 37692de5d523 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller")
Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: qcom-geni: Add shutdown callback for i2c
Roja Rani Yarubandi [Tue, 25 May 2021 13:10:50 +0000 (18:40 +0530)]
i2c: qcom-geni: Add shutdown callback for i2c

If the hardware is still accessing memory after SMMU translation
is disabled (as part of smmu shutdown callback), then the
IOVAs (I/O virtual address) which it was using will go on the bus
as the physical addresses which will result in unknown crashes
like NoC/interconnect errors.

So, implement shutdown callback for i2c driver to suspend the bus
during system "reboot" or "shutdown".

Fixes: 37692de5d523 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller")
Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoMerge tag 'sound-5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 4 Jun 2021 17:13:20 +0000 (10:13 -0700)]
Merge tag 'sound-5.13-rc5' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A couple of small fixes are found in the ALSA core side at this time;
  a fix in the new LED handling code and a long-standing (and likely no
  one would notice) ioctl bug.

  The rest are usual HD-audio fixes, mostly device-specific quirks but
  also one major regression fix that was introduced in 5.13"

* tag 'sound-5.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda: update the power_state during the direct-complete
  ALSA: timer: Fix master timer notification
  ALSA: control led: fix memory leak in snd_ctl_led_register
  ALSA: hda: Fix for mute key LED for HP Pavilion 15-CK0xx
  ALSA: hda/cirrus: Set Initial DMIC volume to -26 dB
  ALSA: hda: Fix a regression in Capture Switch mixer read
  ALSA: hda: Add AlderLake-M PCI ID

3 years agox86/sev: Check SME/SEV support in CPUID first
Pu Wen [Wed, 2 Jun 2021 07:02:07 +0000 (15:02 +0800)]
x86/sev: Check SME/SEV support in CPUID first

The first two bits of the CPUID leaf 0x8000001F EAX indicate whether SEV
or SME is supported, respectively. It's better to check whether SEV or
SME is actually supported before accessing the MSR_AMD64_SEV to check
whether SEV or SME is enabled.

This is both a bare-metal issue and a guest/VM issue. Since the first
generation Hygon Dhyana CPU doesn't support the MSR_AMD64_SEV, reading that
MSR results in a #GP - either directly from hardware in the bare-metal
case or via the hypervisor (because the RDMSR is actually intercepted)
in the guest/VM case, resulting in a failed boot. And since this is very
early in the boot phase, rdmsrl_safe()/native_read_msr_safe() can't be
used.

So check the CPUID bits first, before accessing the MSR.

 [ tlendacky: Expand and improve commit message. ]
 [ bp: Massage commit message. ]

Fixes: eab696d8e8b9 ("x86/sev: Do not require Hypervisor CPUID bit for SEV guests")
Signed-off-by: Pu Wen <puwen@hygon.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Cc: <stable@vger.kernel.org> # v5.10+
Link: https://lkml.kernel.org/r/20210602070207.2480-1-puwen@hygon.cn
3 years agoMerge tag 'drm-fixes-2021-06-04-1' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 4 Jun 2021 16:30:23 +0000 (09:30 -0700)]
Merge tag 'drm-fixes-2021-06-04-1' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Two big regression reverts in here, one for fbdev and one i915.
  Otherwise it's mostly amdgpu display fixes, and tegra fixes.

  fb:
   - revert broken fb_defio patch

  amdgpu:
   - Display fixes
   - FRU EEPROM error handling fix
   - RAS fix
   - PSP fix
   - Releasing pinned BO fix

  i915:
   - Revert conversion to io_mapping_map_user() which lead to BUG_ON()
   - Fix check for error valued returns in a selftest

  tegra:
   - SOR power domain race condition fix
   - build warning fix
   - runtime pm ref leak fix
   - modifier fix"

* tag 'drm-fixes-2021-06-04-1' of git://anongit.freedesktop.org/drm/drm:
  amd/display: convert DRM_DEBUG_ATOMIC to drm_dbg_atomic
  drm/amdgpu: make sure we unpin the UVD BO
  drm/amd/amdgpu:save psp ring wptr to avoid attack
  drm/amd/display: Fix potential memory leak in DMUB hw_init
  drm/amdgpu: Don't query CE and UE errors
  drm/amd/display: Fix overlay validation by considering cursors
  drm/amdgpu: refine amdgpu_fru_get_product_info
  drm/amdgpu: add judgement for dc support
  drm/amd/display: Fix GPU scaling regression by FS video support
  drm/amd/display: Allow bandwidth validation for 0 streams.
  Revert "i915: use io_mapping_map_user"
  drm/i915/selftests: Fix return value check in live_breadcrumbs_smoketest()
  Revert "fb_defio: Remove custom address_space_operations"
  drm/tegra: Correct DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT
  drm/tegra: sor: Fix AUX device reference leak
  drm/tegra: Get ref for DP AUX channel, not its ddc adapter
  drm/tegra: Fix shift overflow in tegra_shared_plane_atomic_update
  drm/tegra: sor: Fully initialize SOR before registration
  gpu: host1x: Split up client initalization and registration
  drm/tegra: sor: Do not leak runtime PM reference

3 years agovirtchnl: Add missing padding to virtchnl_proto_hdrs
Geert Uytterhoeven [Wed, 19 May 2021 19:43:50 +0000 (21:43 +0200)]
virtchnl: Add missing padding to virtchnl_proto_hdrs

On m68k (Coldfire M547x):

      CC      drivers/net/ethernet/intel/i40e/i40e_main.o
    In file included from drivers/net/ethernet/intel/i40e/i40e_prototype.h:9,
     from drivers/net/ethernet/intel/i40e/i40e.h:41,
     from drivers/net/ethernet/intel/i40e/i40e_main.c:12:
    include/linux/avf/virtchnl.h:153:36: warning: division by zero [-Wdiv-by-zero]
      153 |  { virtchnl_static_assert_##X = (n)/((sizeof(struct X) == (n)) ? 1 : 0) }
  |                                    ^
    include/linux/avf/virtchnl.h:844:1: note: in expansion of macro ‘VIRTCHNL_CHECK_STRUCT_LEN’
      844 | VIRTCHNL_CHECK_STRUCT_LEN(2312, virtchnl_proto_hdrs);
  | ^~~~~~~~~~~~~~~~~~~~~~~~~
    include/linux/avf/virtchnl.h:844:33: error: enumerator value for ‘virtchnl_static_assert_virtchnl_proto_hdrs’ is not an integer constant
      844 | VIRTCHNL_CHECK_STRUCT_LEN(2312, virtchnl_proto_hdrs);
  |                                 ^~~~~~~~~~~~~~~~~~~

On m68k, integers are aligned on addresses that are multiples of two,
not four, bytes.  Hence the size of a structure containing integers may
not be divisible by 4.

Fix this by adding explicit padding.

Fixes: 1f7ea1cd6a374842 ("ice: Enable FDIR Configure for AVF")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: Allow all LLDP packets from PF to Tx
Dave Ertman [Wed, 5 May 2021 21:17:59 +0000 (14:17 -0700)]
ice: Allow all LLDP packets from PF to Tx

Currently in the ice driver, the check whether to
allow a LLDP packet to egress the interface from the
PF_VSI is being based on the SKB's priority field.
It checks to see if the packets priority is equal to
TC_PRIO_CONTROL.  Injected LLDP packets do not always
meet this condition.

SCAPY defaults to a sk_buff->protocol value of ETH_P_ALL
(0x0003) and does not set the priority field.  There will
be other injection methods (even ones used by end users)
that will not correctly configure the socket so that
SKB fields are correctly populated.

Then ethernet header has to have to correct value for
the protocol though.

Add a check to also allow packets whose ethhdr->h_proto
matches ETH_P_LLDP (0x88CC).

Fixes: 0c3a6101ff2d ("ice: Allow egress control packets from PF_VSI")
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: report supported and advertised autoneg using PHY capabilities
Paul Greenwalt [Wed, 5 May 2021 21:17:58 +0000 (14:17 -0700)]
ice: report supported and advertised autoneg using PHY capabilities

Ethtool incorrectly reported supported and advertised auto-negotiation
settings for a backplane PHY image which did not support auto-negotiation.
This can occur when using media or PHY type for reporting ethtool
supported and advertised auto-negotiation settings.

Remove setting supported and advertised auto-negotiation settings based
on PHY type in ice_phy_type_to_ethtool(), and MAC type in
ice_get_link_ksettings().

Ethtool supported and advertised auto-negotiation settings should be
based on the PHY image using the AQ command get PHY capabilities with
media. Add setting supported and advertised auto-negotiation settings
based get PHY capabilities with media in ice_get_link_ksettings().

Fixes: 48cb27f2fd18 ("ice: Implement handlers for ethtool PHY/link operations")
Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: handle the VF VSI rebuild failure
Haiyue Wang [Fri, 26 Feb 2021 21:19:31 +0000 (13:19 -0800)]
ice: handle the VF VSI rebuild failure

VSI rebuild can be failed for LAN queue config, then the VF's VSI will
be NULL, the VF reset should be stopped with the VF entering into the
disable state.

Fixes: 12bb018c538c ("ice: Refactor VF reset")
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: Fix VFR issues for AVF drivers that expect ATQLEN cleared
Brett Creeley [Fri, 26 Feb 2021 21:19:21 +0000 (13:19 -0800)]
ice: Fix VFR issues for AVF drivers that expect ATQLEN cleared

Some AVF drivers expect the VF_MBX_ATQLEN register to be cleared for any
type of VFR/VFLR. Fix this by clearing the VF_MBX_ATQLEN register at the
same time as VF_MBX_ARQLEN.

Fixes: 82ba01282cf8 ("ice: clear VF ARQLEN register on reset")
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: Fix allowing VF to request more/less queues via virtchnl
Brett Creeley [Fri, 26 Feb 2021 21:19:20 +0000 (13:19 -0800)]
ice: Fix allowing VF to request more/less queues via virtchnl

Commit 12bb018c538c ("ice: Refactor VF reset") caused a regression
that removes the ability for a VF to request a different amount of
queues via VIRTCHNL_OP_REQUEST_QUEUES. This prevents VF drivers to
either increase or decrease the number of queue pairs they are
allocated. Fix this by using the variable vf->num_req_qs when
determining the vf->num_vf_qs during VF VSI creation.

Fixes: 12bb018c538c ("ice: Refactor VF reset")
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoperf env: Fix memory leak of bpf_prog_info_linear member
Riccardo Mancini [Wed, 2 Jun 2021 22:40:23 +0000 (00:40 +0200)]
perf env: Fix memory leak of bpf_prog_info_linear member

ASan reported a memory leak caused by info_linear not being deallocated.

The info_linear was allocated during in perf_event__synthesize_one_bpf_prog().

This patch adds the corresponding free() when bpf_prog_info_node
is freed in perf_env__purge_bpf().

  $ sudo ./perf record -- sleep 5
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.025 MB perf.data (8 samples) ]

  =================================================================
  ==297735==ERROR: LeakSanitizer: detected memory leaks

  Direct leak of 7688 byte(s) in 19 object(s) allocated from:
      #0 0x4f420f in malloc (/home/user/linux/tools/perf/perf+0x4f420f)
      #1 0xc06a74 in bpf_program__get_prog_info_linear /home/user/linux/tools/lib/bpf/libbpf.c:11113:16
      #2 0xb426fe in perf_event__synthesize_one_bpf_prog /home/user/linux/tools/perf/util/bpf-event.c:191:16
      #3 0xb42008 in perf_event__synthesize_bpf_events /home/user/linux/tools/perf/util/bpf-event.c:410:9
      #4 0x594596 in record__synthesize /home/user/linux/tools/perf/builtin-record.c:1490:8
      #5 0x58c9ac in __cmd_record /home/user/linux/tools/perf/builtin-record.c:1798:8
      #6 0x58990b in cmd_record /home/user/linux/tools/perf/builtin-record.c:2901:8
      #7 0x7b2a20 in run_builtin /home/user/linux/tools/perf/perf.c:313:11
      #8 0x7b12ff in handle_internal_command /home/user/linux/tools/perf/perf.c:365:8
      #9 0x7b2583 in run_argv /home/user/linux/tools/perf/perf.c:409:2
      #10 0x7b0d79 in main /home/user/linux/tools/perf/perf.c:539:3
      #11 0x7fa357ef6b74 in __libc_start_main /usr/src/debug/glibc-2.33-8.fc34.x86_64/csu/../csu/libc-start.c:332:16

Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Link: http://lore.kernel.org/lkml/20210602224024.300485-1-rickyman7@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agox86/fault: Don't send SIGSEGV twice on SEGV_PKUERR
Jiashuo Liang [Tue, 1 Jun 2021 08:52:03 +0000 (16:52 +0800)]
x86/fault: Don't send SIGSEGV twice on SEGV_PKUERR

__bad_area_nosemaphore() calls both force_sig_pkuerr() and
force_sig_fault() when handling SEGV_PKUERR. This does not cause
problems because the second signal is filtered by the legacy_queue()
check in __send_signal() because in both cases, the signal is SIGSEGV,
the second one seeing that the first one is already pending.

This causes the kernel to do unnecessary work so send the signal only
once for SEGV_PKUERR.

 [ bp: Massage commit message. ]

Fixes: 9db812dbb29d ("signal/x86: Call force_sig_pkuerr from __bad_area_nosemaphore")
Suggested-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Jiashuo Liang <liangjs@pku.edu.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Link: https://lkml.kernel.org/r/20210601085203.40214-1-liangjs@pku.edu.cn
3 years agoperf symbol-elf: Fix memory leak by freeing sdt_note.args
Riccardo Mancini [Wed, 2 Jun 2021 22:08:33 +0000 (00:08 +0200)]
perf symbol-elf: Fix memory leak by freeing sdt_note.args

Reported by ASan.

Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Fabian Hemmer <copy@copy.sh>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Remi Bernon <rbernon@codeweavers.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Link: http://lore.kernel.org/lkml/20210602220833.285226-1-rickyman7@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf stat: Honor event config name on --no-merge
Namhyung Kim [Wed, 2 Jun 2021 21:22:41 +0000 (14:22 -0700)]
perf stat: Honor event config name on --no-merge

If user gave an event name explicitly, it should be displayed in the
output as is.  But with --no-merge option it adds a pmu name at the
end so might confuse users.

Actually this is true for hybrid pmus, I think we should do the same
for others.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210602212241.2175005-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf evsel: Add missing cloning of evsel->use_config_name
Namhyung Kim [Wed, 2 Jun 2021 21:22:40 +0000 (14:22 -0700)]
perf evsel: Add missing cloning of evsel->use_config_name

The evsel__clone() should copy all fields in the evsel which are set
during the event parsing.  But it missed the use_config_name field.

Fixes: 12279429d862 ("perf stat: Uniquify hybrid event name")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210602212241.2175005-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoMerge tag 'drm/tegra/for-5.13-rc5' of ssh://git.freedesktop.org/git/tegra/linux into...
Dave Airlie [Fri, 4 Jun 2021 00:23:23 +0000 (10:23 +1000)]
Merge tag 'drm/tegra/for-5.13-rc5' of ssh://git.freedesktop.org/git/tegra/linux into drm-fixes

drm/tegra: Fixes for v5.13-rc5

The most important change here fixes a race condition that causes either
HDA or (more frequently) display to malfunction because they race for
enabling the SOR power domain at probe time.

Other than that, there's a couple of build warnings for issues
introduced in v5.13 as well as some minor fixes, such as reference leak
plugs.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210603144624.788861-1-thierry.reding@gmail.com
3 years agoMerge tag 'amd-drm-fixes-5.13-2021-06-02' of https://gitlab.freedesktop.org/agd5f...
Dave Airlie [Thu, 3 Jun 2021 23:45:15 +0000 (09:45 +1000)]
Merge tag 'amd-drm-fixes-5.13-2021-06-02' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-5.13-2021-06-02:

amdgpu:
- Display fixes
- FRU EEPROM error handling fix
- RAS fix
- PSP fix
- Releasing pinned BO fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210603040410.4080-1-alexander.deucher@amd.com
3 years agoMerge tag 'for-net-2021-06-03' of git://git.kernel.org/pub/scm/linux/kernel/git/bluet...
David S. Miller [Thu, 3 Jun 2021 22:32:21 +0000 (15:32 -0700)]
Merge tag 'for-net-2021-06-03' of git://git./linux/kernel/git/bluetooth/bluetooth

bluetooth pull request for net:

 - Fixes UAF and CVE-2021-3564
 - Fix VIRTIO_ID_BT to use an unassigned ID
 - Fix firmware loading on some Intel Controllers

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agovirtio-net: fix for skb_over_panic inside big mode
Xuan Zhuo [Thu, 3 Jun 2021 17:09:01 +0000 (01:09 +0800)]
virtio-net: fix for skb_over_panic inside big mode

In virtio-net's large packet mode, there is a hole in the space behind
buf.

    hdr_padded_len - hdr_len

We must take this into account when calculating tailroom.

[   44.544385] skb_put.cold (net/core/skbuff.c:5254 (discriminator 1) net/core/skbuff.c:5252 (discriminator 1))
[   44.544864] page_to_skb (drivers/net/virtio_net.c:485) [   44.545361] receive_buf (drivers/net/virtio_net.c:849 drivers/net/virtio_net.c:1131)
[   44.545870] ? netif_receive_skb_list_internal (net/core/dev.c:5714)
[   44.546628] ? dev_gro_receive (net/core/dev.c:6103)
[   44.547135] ? napi_complete_done (./include/linux/list.h:35 net/core/dev.c:5867 net/core/dev.c:5862 net/core/dev.c:6565)
[   44.547672] virtnet_poll (drivers/net/virtio_net.c:1427 drivers/net/virtio_net.c:1525)
[   44.548251] __napi_poll (net/core/dev.c:6985)
[   44.548744] net_rx_action (net/core/dev.c:7054 net/core/dev.c:7139)
[   44.549264] __do_softirq (./arch/x86/include/asm/jump_label.h:19 ./include/linux/jump_label.h:200 ./include/trace/events/irq.h:142 kernel/softirq.c:560)
[   44.549762] irq_exit_rcu (kernel/softirq.c:433 kernel/softirq.c:637 kernel/softirq.c:649)
[   44.551384] common_interrupt (arch/x86/kernel/irq.c:240 (discriminator 13))
[   44.551991] ? asm_common_interrupt (./arch/x86/include/asm/idtentry.h:638)
[   44.552654] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:638)

Fixes: fb32856b16ad ("virtio-net: page_to_skb() use build_skb when there's sufficient tailroom")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Reported-by: Corentin Noël <corentin.noel@collabora.com>
Tested-by: Corentin Noël <corentin.noel@collabora.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'ieee802154-for-davem-2021-06-03' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Thu, 3 Jun 2021 22:21:58 +0000 (15:21 -0700)]
Merge tag 'ieee802154-for-davem-2021-06-03' of git://git./linux/kernel/git/sschmidt/wpan

Stefan Schmidt says:

====================
An update from ieee802154 for your *net* tree.

This time we have fixes for the ieee802154 netlink code, as well as a driver
fix. Zhen Lei, Wei Yongjun and Yang Li each had  a patch to cleanup some return
code handling ensuring we actually get a real error code when things fails.

Dan Robertson fixed a potential null dereference in our netlink handling.

Andy Shevchenko removed of_match_ptr()usage in the mrf24j40 driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoipv6: Fix KASAN: slab-out-of-bounds Read in fib6_nh_flush_exceptions
Coco Li [Thu, 3 Jun 2021 07:32:58 +0000 (07:32 +0000)]
ipv6: Fix KASAN: slab-out-of-bounds Read in fib6_nh_flush_exceptions

Reported by syzbot:
HEAD commit:    90c911ad Merge tag 'fixes' of git://git.kernel.org/pub/scm..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
link: https://syzkaller.appspot.com/bug?extid=123aa35098fd3c000eb7
compiler:       Debian clang version 11.0.1-2

==================================================================
BUG: KASAN: slab-out-of-bounds in fib6_nh_get_excptn_bucket net/ipv6/route.c:1604 [inline]
BUG: KASAN: slab-out-of-bounds in fib6_nh_flush_exceptions+0xbd/0x360 net/ipv6/route.c:1732
Read of size 8 at addr ffff8880145c78f8 by task syz-executor.4/17760

CPU: 0 PID: 17760 Comm: syz-executor.4 Not tainted 5.12.0-rc8-syzkaller #0
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x202/0x31e lib/dump_stack.c:120
 print_address_description+0x5f/0x3b0 mm/kasan/report.c:232
 __kasan_report mm/kasan/report.c:399 [inline]
 kasan_report+0x15c/0x200 mm/kasan/report.c:416
 fib6_nh_get_excptn_bucket net/ipv6/route.c:1604 [inline]
 fib6_nh_flush_exceptions+0xbd/0x360 net/ipv6/route.c:1732
 fib6_nh_release+0x9a/0x430 net/ipv6/route.c:3536
 fib6_info_destroy_rcu+0xcb/0x1c0 net/ipv6/ip6_fib.c:174
 rcu_do_batch kernel/rcu/tree.c:2559 [inline]
 rcu_core+0x8f6/0x1450 kernel/rcu/tree.c:2794
 __do_softirq+0x372/0x7a6 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu+0x22c/0x260 kernel/softirq.c:422
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:lock_acquire+0x1f6/0x720 kernel/locking/lockdep.c:5515
Code: f6 84 24 a1 00 00 00 02 0f 85 8d 02 00 00 f7 c3 00 02 00 00 49 bd 00 00 00 00 00 fc ff df 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 4b c7 44 3d 09 00 00 00 00 43 c7 44 3d
RSP: 0018:ffffc90009e06560 EFLAGS: 00000206
RAX: 1ffff920013c0cc0 RBX: 0000000000000246 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90009e066e0 R08: dffffc0000000000 R09: fffffbfff1f992b1
R10: fffffbfff1f992b1 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920013c0cb4
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:267
 rcu_read_lock include/linux/rcupdate.h:656 [inline]
 ext4_get_group_info+0xea/0x340 fs/ext4/ext4.h:3231
 ext4_mb_prefetch+0x123/0x5d0 fs/ext4/mballoc.c:2212
 ext4_mb_regular_allocator+0x8a5/0x28f0 fs/ext4/mballoc.c:2379
 ext4_mb_new_blocks+0xc6e/0x24f0 fs/ext4/mballoc.c:4982
 ext4_ext_map_blocks+0x2be3/0x7210 fs/ext4/extents.c:4238
 ext4_map_blocks+0xab3/0x1cb0 fs/ext4/inode.c:638
 ext4_getblk+0x187/0x6c0 fs/ext4/inode.c:848
 ext4_bread+0x2a/0x1c0 fs/ext4/inode.c:900
 ext4_append+0x1a4/0x360 fs/ext4/namei.c:67
 ext4_init_new_dir+0x337/0xa10 fs/ext4/namei.c:2768
 ext4_mkdir+0x4b8/0xc00 fs/ext4/namei.c:2814
 vfs_mkdir+0x45b/0x640 fs/namei.c:3819
 ovl_do_mkdir fs/overlayfs/overlayfs.h:161 [inline]
 ovl_mkdir_real+0x53/0x1a0 fs/overlayfs/dir.c:146
 ovl_create_real+0x280/0x490 fs/overlayfs/dir.c:193
 ovl_workdir_create+0x425/0x600 fs/overlayfs/super.c:788
 ovl_make_workdir+0xed/0x1140 fs/overlayfs/super.c:1355
 ovl_get_workdir fs/overlayfs/super.c:1492 [inline]
 ovl_fill_super+0x39ee/0x5370 fs/overlayfs/super.c:2035
 mount_nodev+0x52/0xe0 fs/super.c:1413
 legacy_get_tree+0xea/0x180 fs/fs_context.c:592
 vfs_get_tree+0x86/0x270 fs/super.c:1497
 do_new_mount fs/namespace.c:2903 [inline]
 path_mount+0x196f/0x2be0 fs/namespace.c:3233
 do_mount fs/namespace.c:3246 [inline]
 __do_sys_mount fs/namespace.c:3454 [inline]
 __se_sys_mount+0x2f9/0x3b0 fs/namespace.c:3431
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f68f2b87188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 000000000040000a
RBP: 00000000004bfbb9 R08: 0000000020000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffe19002dff R14: 00007f68f2b87300 R15: 0000000000022000

Allocated by task 17768:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:427 [inline]
 ____kasan_kmalloc+0xc2/0xf0 mm/kasan/common.c:506
 kasan_kmalloc include/linux/kasan.h:233 [inline]
 __kmalloc+0xb4/0x380 mm/slub.c:4055
 kmalloc include/linux/slab.h:559 [inline]
 kzalloc include/linux/slab.h:684 [inline]
 fib6_info_alloc+0x2c/0xd0 net/ipv6/ip6_fib.c:154
 ip6_route_info_create+0x55d/0x1a10 net/ipv6/route.c:3638
 ip6_route_add+0x22/0x120 net/ipv6/route.c:3728
 inet6_rtm_newroute+0x2cd/0x2260 net/ipv6/route.c:5352
 rtnetlink_rcv_msg+0xb34/0xe70 net/core/rtnetlink.c:5553
 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2502
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x7de/0x9b0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0xaa6/0xe90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0x5a2/0x900 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x319/0x400 net/socket.c:2433
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Last potentially related work creation:
 kasan_save_stack+0x27/0x50 mm/kasan/common.c:38
 kasan_record_aux_stack+0xee/0x120 mm/kasan/generic.c:345
 __call_rcu kernel/rcu/tree.c:3039 [inline]
 call_rcu+0x1b1/0xa30 kernel/rcu/tree.c:3114
 fib6_info_release include/net/ip6_fib.h:337 [inline]
 ip6_route_info_create+0x10c4/0x1a10 net/ipv6/route.c:3718
 ip6_route_add+0x22/0x120 net/ipv6/route.c:3728
 inet6_rtm_newroute+0x2cd/0x2260 net/ipv6/route.c:5352
 rtnetlink_rcv_msg+0xb34/0xe70 net/core/rtnetlink.c:5553
 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2502
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x7de/0x9b0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0xaa6/0xe90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg net/socket.c:674 [inline]
 ____sys_sendmsg+0x5a2/0x900 net/socket.c:2350
 ___sys_sendmsg net/socket.c:2404 [inline]
 __sys_sendmsg+0x319/0x400 net/socket.c:2433
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Second to last potentially related work creation:
 kasan_save_stack+0x27/0x50 mm/kasan/common.c:38
 kasan_record_aux_stack+0xee/0x120 mm/kasan/generic.c:345
 insert_work+0x54/0x400 kernel/workqueue.c:1331
 __queue_work+0x981/0xcc0 kernel/workqueue.c:1497
 queue_work_on+0x111/0x200 kernel/workqueue.c:1524
 queue_work include/linux/workqueue.h:507 [inline]
 call_usermodehelper_exec+0x283/0x470 kernel/umh.c:433
 kobject_uevent_env+0x1349/0x1730 lib/kobject_uevent.c:617
 kvm_uevent_notify_change+0x309/0x3b0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4809
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:877 [inline]
 kvm_put_kvm+0x9c/0xd10 arch/x86/kvm/../../../virt/kvm/kvm_main.c:920
 kvm_vcpu_release+0x53/0x60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3120
 __fput+0x352/0x7b0 fs/file_table.c:280
 task_work_run+0x146/0x1c0 kernel/task_work.c:140
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
 exit_to_user_mode_prepare+0x10b/0x1e0 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x26/0x70 kernel/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x44/0xae

The buggy address belongs to the object at ffff8880145c7800
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 56 bytes to the right of
 192-byte region [ffff8880145c7800ffff8880145c78c0)
The buggy address belongs to the page:
page:ffffea00005171c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x145c7
flags: 0xfff00000000200(slab)
raw: 00fff00000000200 ffffea00006474c0 0000000200000002 ffff888010c41a00
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880145c7780: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff8880145c7800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880145c7880: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff8880145c7900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880145c7980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
==================================================================

In the ip6_route_info_create function, in the case that the nh pointer
is not NULL, the fib6_nh in fib6_info has not been allocated.
Therefore, when trying to free fib6_info in this error case using
fib6_info_release, the function will call fib6_info_destroy_rcu,
which it will access fib6_nh_release(f6i->fib6_nh);
However, f6i->fib6_nh doesn't have any refcount yet given the lack of allocation
causing the reported memory issue above.
Therefore, releasing the empty pointer directly instead would be the solution.

Fixes: f88d8ea67fbdb ("ipv6: Plumb support for nexthop object in a fib6_info")
Fixes: 706ec91916462 ("ipv6: Fix nexthop refcnt leak when creating ipv6 route info")
Signed-off-by: Coco Li <lixiaoyan@google.com>
Cc: David Ahern <dsahern@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'wireless-drivers-2021-06-03' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Thu, 3 Jun 2021 22:17:33 +0000 (15:17 -0700)]
Merge tag 'wireless-drivers-2021-06-03' of git://git./linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for v5.13

We have only mt76 fixes this time, most important being the fix for
A-MSDU injection attacks.

mt76

* mitigate A-MSDU injection attacks (CVE-2020-24588)

* fix possible array out of bound access in mt7921_mcu_tx_rate_report

* various aggregation and HE setting fixes

* suspend/resume fix for pci devices

* mt7615: fix crash when runtime-pm is not supported
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agofib: Return the correct errno code
Zheng Yongjun [Wed, 2 Jun 2021 14:06:58 +0000 (22:06 +0800)]
fib: Return the correct errno code

When kalloc or kmemdup failed, should return ENOMEM rather than ENOBUF.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: Return the correct errno code
Zheng Yongjun [Wed, 2 Jun 2021 14:06:40 +0000 (22:06 +0800)]
net: Return the correct errno code

When kalloc or kmemdup failed, should return ENOMEM rather than ENOBUF.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/x25: Return the correct errno code
Zheng Yongjun [Wed, 2 Jun 2021 14:06:30 +0000 (22:06 +0800)]
net/x25: Return the correct errno code

When kalloc or kmemdup failed, should return ENOMEM rather than ENOBUF.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agocxgb4: fix regression with HASH tc prio value update
Rahul Lakkireddy [Wed, 2 Jun 2021 14:08:59 +0000 (19:38 +0530)]
cxgb4: fix regression with HASH tc prio value update

commit db43b30cd89c ("cxgb4: add ethtool n-tuple filter deletion")
has moved searching for next highest priority HASH filter rule to
cxgb4_flow_rule_destroy(), which searches the rhashtable before the
the rule is removed from it and hence always finds at least 1 entry.
Fix by removing the rule from rhashtable first before calling
cxgb4_flow_rule_destroy() and hence avoid fetching stale info.

Fixes: db43b30cd89c ("cxgb4: add ethtool n-tuple filter deletion")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'caif-fixes'
David S. Miller [Thu, 3 Jun 2021 22:05:07 +0000 (15:05 -0700)]
Merge branch 'caif-fixes'

Pavel Skripkin says:

====================
This patch series fix 2 memory leaks in caif
interface.

Syzbot reported memory leak in cfserl_create().
The problem was in cfcnfg_add_phy_layer() function.
This function accepts struct cflayer *link_support and
assign it to corresponting structures, but it can fail
in some cases.

These cases must be handled to prevent leaking allocated
struct cflayer *link_support pointer, because if error accured
before assigning link_support pointer to somewhere, this pointer
must be freed.

Fail log:

[   49.051872][ T7010] caif:cfcnfg_add_phy_layer(): Too many CAIF Link Layers (max 6)
[   49.110236][ T7042] caif:cfcnfg_add_phy_layer(): Too many CAIF Link Layers (max 6)
[   49.134936][ T7045] caif:cfcnfg_add_phy_layer(): Too many CAIF Link Layers (max 6)
[   49.163083][ T7043] caif:cfcnfg_add_phy_layer(): Too many CAIF Link Layers (max 6)
[   55.248950][ T6994] kmemleak: 4 new suspected memory leaks (see /sys/kernel/debug/kmemleak)

int cfcnfg_add_phy_layer(..., struct cflayer *link_support, ...)
{
...
/* CAIF protocol allow maximum 6 link-layers */
for (i = 0; i < 7; i++) {
phyid = (dev->ifindex + i) & 0x7;
if (phyid == 0)
continue;
if (cfcnfg_get_phyinfo_rcu(cnfg, phyid) == NULL)
goto got_phyid;
}
pr_warn("Too many CAIF Link Layers (max 6)\n");
goto out;
...
if (link_support != NULL) {
link_support->id = phyid;
layer_set_dn(frml, link_support);
layer_set_up(link_support, frml);
layer_set_dn(link_support, phy_layer);
layer_set_up(phy_layer, link_support);
}
...
}

As you can see, if cfcnfg_add_phy_layer fails before layer_set_*,
link_support becomes leaked.

So, in this series, I made cfcnfg_add_phy_layer()
return an int and added error handling code to prevent
leaking link_support pointer in caif_device_notify()
and cfusbl_device_notify() functions.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: caif: fix memory leak in cfusbl_device_notify
Pavel Skripkin [Thu, 3 Jun 2021 16:39:35 +0000 (19:39 +0300)]
net: caif: fix memory leak in cfusbl_device_notify

In case of caif_enroll_dev() fail, allocated
link_support won't be assigned to the corresponding
structure. So simply free allocated pointer in case
of error.

Fixes: 7ad65bf68d70 ("caif: Add support for CAIF over CDC NCM USB interface")
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: caif: fix memory leak in caif_device_notify
Pavel Skripkin [Thu, 3 Jun 2021 16:39:11 +0000 (19:39 +0300)]
net: caif: fix memory leak in caif_device_notify

In case of caif_enroll_dev() fail, allocated
link_support won't be assigned to the corresponding
structure. So simply free allocated pointer in case
of error

Fixes: 7c18d2205ea7 ("caif: Restructure how link caif link layer enroll")
Cc: stable@vger.kernel.org
Reported-and-tested-by: syzbot+7ec324747ce876a29db6@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: caif: add proper error handling
Pavel Skripkin [Thu, 3 Jun 2021 16:38:51 +0000 (19:38 +0300)]
net: caif: add proper error handling

caif_enroll_dev() can fail in some cases. Ingnoring
these cases can lead to memory leak due to not assigning
link_support pointer to anywhere.

Fixes: 7c18d2205ea7 ("caif: Restructure how link caif link layer enroll")
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: caif: added cfserl_release function
Pavel Skripkin [Thu, 3 Jun 2021 16:38:12 +0000 (19:38 +0300)]
net: caif: added cfserl_release function

Added cfserl_release() function.

Cc: stable@vger.kernel.org
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
David S. Miller [Thu, 3 Jun 2021 22:02:55 +0000 (15:02 -0700)]
Merge branch '1GbE' of git://git./linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
This series contains updates to igb, igc, ixgbe, ixgbevf, i40e and ice
drivers.

Kurt Kanzenbach fixes XDP for igb when PTP is enabled by pulling the
timestamp and adjusting appropriate values prior to XDP operations.

Magnus adds missing exception tracing for XDP on igb, igc, ixgbe,
ixgbevf, i40e and ice drivers.

Maciej adds tracking of AF_XDP zero copy enabled queues to resolve an
issue with copy mode Tx for the ice driver.

Note: Patch 7 will conflict when merged with net-next. Please carry
these changes forward. IGC_XDP_TX and IGC_XDP_REDIRECT will need to be
changed to return to conform with the net-next changes. Let me know if
you have issues.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge tag 'drm-intel-fixes-2021-06-03' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Thu, 3 Jun 2021 21:29:25 +0000 (07:29 +1000)]
Merge tag 'drm-intel-fixes-2021-06-03' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.13-rc5:
- Revert conversion to io_mapping_map_user() which lead to BUG_ON()
- Fix check for error valued returns in a selftest

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87lf7rpcmp.fsf@intel.com
3 years agoMerge tag 'drm-misc-fixes-2021-06-03' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Thu, 3 Jun 2021 21:29:00 +0000 (07:29 +1000)]
Merge tag 'drm-misc-fixes-2021-06-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

One fix for a fb_defio breakage

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210603085321.l5l6flslj632yqse@gilmour
3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
David S. Miller [Thu, 3 Jun 2021 21:17:42 +0000 (14:17 -0700)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2021-06-02

The following pull-request contains BPF updates for your *net* tree.

We've added 2 non-merge commits during the last 7 day(s) which contain
a total of 4 files changed, 19 insertions(+), 24 deletions(-).

The main changes are:

1) Fix pahole BTF generation when ccache is used, from Javier Martinez Canillas.

2) Fix BPF lockdown hooks in bpf_probe_read_kernel{,_str}() helpers which caused
   a deadlock from bcc programs, triggered OOM killer from audit side and didn't
   work generally with SELinux policy rules due to pointing to wrong task struct,
   from Daniel Borkmann.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: kcm: fix memory leak in kcm_sendmsg
Pavel Skripkin [Wed, 2 Jun 2021 19:26:40 +0000 (22:26 +0300)]
net: kcm: fix memory leak in kcm_sendmsg

Syzbot reported memory leak in kcm_sendmsg()[1].
The problem was in non-freed frag_list in case of error.

In the while loop:

if (head == skb)
skb_shinfo(head)->frag_list = tskb;
else
skb->next = tskb;

frag_list filled with skbs, but nothing was freeing them.

backtrace:
  [<0000000094c02615>] __alloc_skb+0x5e/0x250 net/core/skbuff.c:198
  [<00000000e5386cbd>] alloc_skb include/linux/skbuff.h:1083 [inline]
  [<00000000e5386cbd>] kcm_sendmsg+0x3b6/0xa50 net/kcm/kcmsock.c:967 [1]
  [<00000000f1613a8a>] sock_sendmsg_nosec net/socket.c:652 [inline]
  [<00000000f1613a8a>] sock_sendmsg+0x4c/0x60 net/socket.c:672

Reported-and-tested-by: syzbot+b039f5699bd82e1fb011@syzkaller.appspotmail.com
Fixes: ab7ac4eb9832 ("kcm: Kernel Connection Multiplexor module")
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoBluetooth: btusb: Fix failing to init controllers with operation firmware
Luiz Augusto von Dentz [Fri, 30 Apr 2021 23:05:01 +0000 (16:05 -0700)]
Bluetooth: btusb: Fix failing to init controllers with operation firmware

Some firmware when operation don't may have broken versions leading to
error like the following:

[    6.176482] Bluetooth: hci0: Firmware revision 0.0 build 121 week 7 2021
[    6.177906] bluetooth hci0: Direct firmware load for intel/ibt-20-0-0.sfi failed with error -2
[    6.177910] Bluetooth: hci0: Failed to load Intel firmware file intel/ibt-20-0-0.sfi (-2)

Since we load the firmware file just to check if its version had changed
comparing to the one already loaded we can just skip since the firmware
is already operation.

Fixes: ac0565462e330 ("Bluetooth: btintel: Check firmware version before
download")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
3 years agoBluetooth: Fix VIRTIO_ID_BT assigned number
Marcel Holtmann [Thu, 3 Jun 2021 19:20:26 +0000 (21:20 +0200)]
Bluetooth: Fix VIRTIO_ID_BT assigned number

It turned out that the VIRTIO_ID_* are not assigned in the virtio_ids.h
file in the upstream kernel. Picking the next free one was wrong and
there is a process that has been followed now.

See https://github.com/oasis-tcs/virtio-spec/issues/108 for details.

Fixes: afd2daa26c7a ("Bluetooth: Add support for virtio transport driver")
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
3 years agosit: set name of device back to struct parms
zhang kai [Wed, 2 Jun 2021 10:36:26 +0000 (18:36 +0800)]
sit: set name of device back to struct parms

addrconf_set_sit_dstaddr will use parms->name.

Signed-off-by: zhang kai <zhangkaiheb@126.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agortnetlink: Fix missing error code in rtnl_bridge_notify()
Jiapeng Chong [Wed, 2 Jun 2021 10:15:04 +0000 (18:15 +0800)]
rtnetlink: Fix missing error code in rtnl_bridge_notify()

The error code is missing in this code scenario, add the error code
'-EINVAL' to the return value 'err'.

Eliminate the follow smatch warning:

net/core/rtnetlink.c:4834 rtnl_bridge_notify() warn: missing error code
'err'.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Thu, 3 Jun 2021 20:49:08 +0000 (13:49 -0700)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net:

1) Do not allow to add conntrack helper extension for confirmed
   conntracks in the nf_tables ct expectation support.

2) Fix bogus EBUSY in nfnetlink_cthelper when NFCTH_PRIV_DATA_LEN
   is passed on userspace helper updates.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoi2c: tegra-bpmp: Demote kernel-doc abuses
Lee Jones [Thu, 20 May 2021 19:01:04 +0000 (20:01 +0100)]
i2c: tegra-bpmp: Demote kernel-doc abuses

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: Function parameter or member 'i2c' not described in 'tegra_bpmp_serialize_i2c_msg'
 drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: Function parameter or member 'request' not described in 'tegra_bpmp_serialize_i2c_msg'
 drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: Function parameter or member 'msgs' not described in 'tegra_bpmp_serialize_i2c_msg'
 drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: Function parameter or member 'num' not described in 'tegra_bpmp_serialize_i2c_msg'
 drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: expecting prototype for The serialized I2C format is simply the following(). Prototype was for tegra_bpmp_serialize_i2c_msg() instead
 drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: Function parameter or member 'i2c' not described in 'tegra_bpmp_i2c_deserialize'
 drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: Function parameter or member 'response' not described in 'tegra_bpmp_i2c_deserialize'
 drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: Function parameter or member 'msgs' not described in 'tegra_bpmp_i2c_deserialize'
 drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: Function parameter or member 'num' not described in 'tegra_bpmp_i2c_deserialize'
 drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: expecting prototype for The data in the BPMP(). Prototype was for tegra_bpmp_i2c_deserialize() instead

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: altera: Fix formatting issue in struct and demote unworthy kernel-doc headers
Lee Jones [Thu, 20 May 2021 19:00:53 +0000 (20:00 +0100)]
i2c: altera: Fix formatting issue in struct and demote unworthy kernel-doc headers

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-altera.c:74: warning: cannot understand function prototype: 'struct altr_i2c_dev '
 drivers/i2c/busses/i2c-altera.c:180: warning: Function parameter or member 'idev' not described in 'altr_i2c_transfer'
 drivers/i2c/busses/i2c-altera.c:180: warning: Function parameter or member 'data' not described in 'altr_i2c_transfer'
 drivers/i2c/busses/i2c-altera.c:193: warning: Function parameter or member 'idev' not described in 'altr_i2c_empty_rx_fifo'
 drivers/i2c/busses/i2c-altera.c:209: warning: Function parameter or member 'idev' not described in 'altr_i2c_fill_tx_fifo'

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoMerge tag 'vfio-v5.13-rc5' of git://github.com/awilliam/linux-vfio
Linus Torvalds [Thu, 3 Jun 2021 18:52:24 +0000 (11:52 -0700)]
Merge tag 'vfio-v5.13-rc5' of git://github.com/awilliam/linux-vfio

Pull VFIO fixes from Alex Williamson:

 - Fix error path return value (Zhen Lei)

 - Add vfio-pci CONFIG_MMU dependency (Randy Dunlap)

 - Replace open coding with struct_size() (Gustavo A. R. Silva)

 - Fix sample driver error path (Wei Yongjun)

 - Fix vfio-platform error path module_put() (Max Gurtovoy)

* tag 'vfio-v5.13-rc5' of git://github.com/awilliam/linux-vfio:
  vfio/platform: fix module_put call in error flow
  samples: vfio-mdev: fix error handing in mdpy_fb_probe()
  vfio/iommu_type1: Use struct_size() for kzalloc()
  vfio/pci: zap_vma_ptes() needs MMU
  vfio/pci: Fix error return code in vfio_ecap_init()

3 years agoMerge tag 'block-5.13-2021-06-03' of git://git.kernel.dk/linux-block
Linus Torvalds [Thu, 3 Jun 2021 18:47:08 +0000 (11:47 -0700)]
Merge tag 'block-5.13-2021-06-03' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "NVMe fixes from Christoph:

   - Fix corruption in RDMA in-capsule SGLs (Sagi Grimberg)

   - nvme-loop reset fixes (Hannes Reinecke)

   - nvmet fix for freeing unallocated p2pmem (Max Gurtovoy)"

* tag 'block-5.13-2021-06-03' of git://git.kernel.dk/linux-block:
  nvmet: fix freeing unallocated p2pmem
  nvme-loop: do not warn for deleted controllers during reset
  nvme-loop: check for NVME_LOOP_Q_LIVE in nvme_loop_destroy_admin_queue()
  nvme-loop: clear NVME_LOOP_Q_LIVE when nvme_loop_configure_admin_queue() fails
  nvme-loop: reset queue count to 1 in nvme_loop_destroy_io_queues()
  nvme-rdma: fix in-casule data send for chained sgls

3 years agoMerge tag 'io_uring-5.13-2021-06-03' of git://git.kernel.dk/linux-block
Linus Torvalds [Thu, 3 Jun 2021 18:41:00 +0000 (11:41 -0700)]
Merge tag 'io_uring-5.13-2021-06-03' of git://git.kernel.dk/linux-block

Pull io_uring fix from Jens Axboe:
 "Just a single one-liner fix for an accounting regression in this
  release"

* tag 'io_uring-5.13-2021-06-03' of git://git.kernel.dk/linux-block:
  io_uring: fix misaccounting fix buf pinned pages

3 years agoMerge tag 'for-5.13-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
Linus Torvalds [Thu, 3 Jun 2021 18:37:14 +0000 (11:37 -0700)]
Merge tag 'for-5.13-rc4-tag' of git://git./linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "Error handling improvements, caught by error injection:

   - handle errors during checksum deletion

   - set error on mapping when ordered extent io cannot be finished

   - inode link count fixup in tree-log

   - missing return value checks for inode updates in tree-log

   - abort transaction in rename exchange if adding second reference
     fails

  Fixes:

   - fix fsync failure after writes to prealloc extents

   - fix deadlock when cloning inline extents and low on available space

   - fix compressed writes that cross stripe boundary"

* tag 'for-5.13-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  MAINTAINERS: add btrfs IRC link
  btrfs: fix deadlock when cloning inline extents and low on available space
  btrfs: fix fsync failure and transaction abort after writes to prealloc extents
  btrfs: abort in rename_exchange if we fail to insert the second ref
  btrfs: check error value from btrfs_update_inode in tree log
  btrfs: fixup error handling in fixup_inode_link_counts
  btrfs: mark ordered extent and inode with error if we fail to finish
  btrfs: return errors from btrfs_del_csums in cleanup_ref_head
  btrfs: fix error handling in btrfs_del_csums
  btrfs: fix compressed writes that cross stripe boundary

3 years agox86/setup: Always reserve the first 1M of RAM
Mike Rapoport [Tue, 1 Jun 2021 07:53:52 +0000 (10:53 +0300)]
x86/setup: Always reserve the first 1M of RAM

There are BIOSes that are known to corrupt the memory under 1M, or more
precisely under 640K because the memory above 640K is anyway reserved
for the EGA/VGA frame buffer and BIOS.

To prevent usage of the memory that will be potentially clobbered by the
kernel, the beginning of the memory is always reserved. The exact size
of the reserved area is determined by CONFIG_X86_RESERVE_LOW build time
and the "reservelow=" command line option. The reserved range may be
from 4K to 640K with the default of 64K. There are also configurations
that reserve the entire 1M range, like machines with SandyBridge graphic
devices or systems that enable crash kernel.

In addition to the potentially clobbered memory, EBDA of unknown size may
be as low as 128K and the memory above that EBDA start is also reserved
early.

It would have been possible to reserve the entire range under 1M unless for
the real mode trampoline that must reside in that area.

To accommodate placement of the real mode trampoline and keep the memory
safe from being clobbered by BIOS, reserve the first 64K of RAM before
memory allocations are possible and then, after the real mode trampoline
is allocated, reserve the entire range from 0 to 1M.

Update trim_snb_memory() and reserve_real_mode() to avoid redundant
reservations of the same memory range.

Also make sure the memory under 1M is not getting freed by
efi_free_boot_services().

 [ bp: Massage commit message and comments. ]

Fixes: a799c2bd29d1 ("x86/setup: Consolidate early memory reservations")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Hugh Dickins <hughd@google.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=213177
Link: https://lkml.kernel.org/r/20210601075354.5149-2-rppt@kernel.org
3 years agoice: track AF_XDP ZC enabled queues in bitmap
Maciej Fijalkowski [Tue, 27 Apr 2021 19:52:09 +0000 (21:52 +0200)]
ice: track AF_XDP ZC enabled queues in bitmap

Commit c7a219048e45 ("ice: Remove xsk_buff_pool from VSI structure")
silently introduced a regression and broke the Tx side of AF_XDP in copy
mode. xsk_pool on ice_ring is set only based on the existence of the XDP
prog on the VSI which in turn picks ice_clean_tx_irq_zc to be executed.
That is not something that should happen for copy mode as it should use
the regular data path ice_clean_tx_irq.

This results in a following splat when xdpsock is run in txonly or l2fwd
scenarios in copy mode:

<snip>
[  106.050195] BUG: kernel NULL pointer dereference, address: 0000000000000030
[  106.057269] #PF: supervisor read access in kernel mode
[  106.062493] #PF: error_code(0x0000) - not-present page
[  106.067709] PGD 0 P4D 0
[  106.070293] Oops: 0000 [#1] PREEMPT SMP NOPTI
[  106.074721] CPU: 61 PID: 0 Comm: swapper/61 Not tainted 5.12.0-rc2+ #45
[  106.081436] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019
[  106.092027] RIP: 0010:xp_raw_get_dma+0x36/0x50
[  106.096551] Code: 74 14 48 b8 ff ff ff ff ff ff 00 00 48 21 f0 48 c1 ee 30 48 01 c6 48 8b 87 90 00 00 00 48 89 f2 81 e6 ff 0f 00 00 48 c1 ea 0c <48> 8b 04 d0 48 83 e0 fe 48 01 f0 c3 66 66 2e 0f 1f 84 00 00 00 00
[  106.115588] RSP: 0018:ffffc9000d694e50 EFLAGS: 00010206
[  106.120893] RAX: 0000000000000000 RBX: ffff88984b8c8a00 RCX: ffff889852581800
[  106.128137] RDX: 0000000000000006 RSI: 0000000000000000 RDI: ffff88984cd8b800
[  106.135383] RBP: ffff888123b50001 R08: ffff889896800000 R09: 0000000000000800
[  106.142628] R10: 0000000000000000 R11: ffffffff826060c0 R12: 00000000000000ff
[  106.149872] R13: 0000000000000000 R14: 0000000000000040 R15: ffff888123b50018
[  106.157117] FS:  0000000000000000(0000) GS:ffff8897e0f40000(0000) knlGS:0000000000000000
[  106.165332] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  106.171163] CR2: 0000000000000030 CR3: 000000000560a004 CR4: 00000000007706e0
[  106.178408] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  106.185653] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  106.192898] PKRU: 55555554
[  106.195653] Call Trace:
[  106.198143]  <IRQ>
[  106.200196]  ice_clean_tx_irq_zc+0x183/0x2a0 [ice]
[  106.205087]  ice_napi_poll+0x3e/0x590 [ice]
[  106.209356]  __napi_poll+0x2a/0x160
[  106.212911]  net_rx_action+0xd6/0x200
[  106.216634]  __do_softirq+0xbf/0x29b
[  106.220274]  irq_exit_rcu+0x88/0xc0
[  106.223819]  common_interrupt+0x7b/0xa0
[  106.227719]  </IRQ>
[  106.229857]  asm_common_interrupt+0x1e/0x40
</snip>

Fix this by introducing the bitmap of queues that are zero-copy enabled,
where each bit, corresponding to a queue id that xsk pool is being
configured on, will be set/cleared within ice_xsk_pool_{en,dis}able and
checked within ice_xsk_pool(). The latter is a function used for
deciding which napi poll routine is executed.
Idea is being taken from our other drivers such as i40e and ixgbe.

Fixes: c7a219048e45 ("ice: Remove xsk_buff_pool from VSI structure")
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoigc: add correct exception tracing for XDP
Magnus Karlsson [Mon, 10 May 2021 09:38:54 +0000 (11:38 +0200)]
igc: add correct exception tracing for XDP

Add missing exception tracing to XDP when a number of different
errors can occur. The support was only partial. Several errors
where not logged which would confuse the user quite a lot not
knowing where and why the packets disappeared.

Fixes: 73f1071c1d29 ("igc: Add support for XDP_TX action")
Fixes: 4ff320361092 ("igc: Add support for XDP_REDIRECT action")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoixgbevf: add correct exception tracing for XDP
Magnus Karlsson [Mon, 10 May 2021 09:38:53 +0000 (11:38 +0200)]
ixgbevf: add correct exception tracing for XDP

Add missing exception tracing to XDP when a number of different
errors can occur. The support was only partial. Several errors
where not logged which would confuse the user quite a lot not
knowing where and why the packets disappeared.

Fixes: 21092e9ce8b1 ("ixgbevf: Add support for XDP_TX action")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Vishakha Jambekar <vishakha.jambekar@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoigb: add correct exception tracing for XDP
Magnus Karlsson [Mon, 10 May 2021 09:38:52 +0000 (11:38 +0200)]
igb: add correct exception tracing for XDP

Add missing exception tracing to XDP when a number of different
errors can occur. The support was only partial. Several errors
where not logged which would confuse the user quite a lot not
knowing where and why the packets disappeared.

Fixes: 9cbc948b5a20 ("igb: add XDP support")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Vishakha Jambekar <vishakha.jambekar@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoixgbe: add correct exception tracing for XDP
Magnus Karlsson [Mon, 10 May 2021 09:38:51 +0000 (11:38 +0200)]
ixgbe: add correct exception tracing for XDP

Add missing exception tracing to XDP when a number of different
errors can occur. The support was only partial. Several errors
where not logged which would confuse the user quite a lot not
knowing where and why the packets disappeared.

Fixes: 33fdc82f0883 ("ixgbe: add support for XDP_TX action")
Fixes: d0bcacd0a130 ("ixgbe: add AF_XDP zero-copy Rx support")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Vishakha Jambekar <vishakha.jambekar@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: add correct exception tracing for XDP
Magnus Karlsson [Mon, 10 May 2021 09:38:50 +0000 (11:38 +0200)]
ice: add correct exception tracing for XDP

Add missing exception tracing to XDP when a number of different
errors can occur. The support was only partial. Several errors
where not logged which would confuse the user quite a lot not
knowing where and why the packets disappeared.

Fixes: efc2214b6047 ("ice: Add support for XDP")
Fixes: 2d4238f55697 ("ice: Add support for AF_XDP")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoi40e: add correct exception tracing for XDP
Magnus Karlsson [Mon, 10 May 2021 09:38:49 +0000 (11:38 +0200)]
i40e: add correct exception tracing for XDP

Add missing exception tracing to XDP when a number of different errors
can occur. The support was only partial. Several errors where not
logged which would confuse the user quite a lot not knowing where and
why the packets disappeared.

Fixes: 74608d17fe29 ("i40e: add support for XDP_TX action")
Fixes: 0a714186d3c0 ("i40e: add AF_XDP zero-copy Rx support")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Kiran Bhandare <kiranx.bhandare@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoigb: Fix XDP with PTP enabled
Kurt Kanzenbach [Mon, 3 May 2021 07:28:00 +0000 (09:28 +0200)]
igb: Fix XDP with PTP enabled

When using native XDP with the igb driver, the XDP frame data doesn't point to
the beginning of the packet. It's off by 16 bytes. Everything works as expected
with XDP skb mode.

Actually these 16 bytes are used to store the packet timestamps. Therefore, pull
the timestamp before executing any XDP operations and adjust all other code
accordingly. The igc driver does it like that as well.

Tested with Intel i210 card and AF_XDP sockets.

Fixes: 9cbc948b5a20 ("igb: add XDP support")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agox86/alternative: Optimize single-byte NOPs at an arbitrary position
Borislav Petkov [Tue, 1 Jun 2021 15:51:22 +0000 (17:51 +0200)]
x86/alternative: Optimize single-byte NOPs at an arbitrary position

Up until now the assumption was that an alternative patching site would
have some instructions at the beginning and trailing single-byte NOPs
(0x90) padding. Therefore, the patching machinery would go and optimize
those single-byte NOPs into longer ones.

However, this assumption is broken on 32-bit when code like
hv_do_hypercall() in hyperv_init() would use the ratpoline speculation
killer CALL_NOSPEC. The 32-bit version of that macro would align certain
insns to 16 bytes, leading to the compiler issuing a one or more
single-byte NOPs, depending on the holes it needs to fill for alignment.

That would lead to the warning in optimize_nops() to fire:

  ------------[ cut here ]------------
  Not a NOP at 0xc27fb598
   WARNING: CPU: 0 PID: 0 at arch/x86/kernel/alternative.c:211 optimize_nops.isra.13

due to that function verifying whether all of the following bytes really
are single-byte NOPs.

Therefore, carve out the NOP padding into a separate function and call
it for each NOP range beginning with a single-byte NOP.

Fixes: 23c1ad538f4f ("x86/alternatives: Optimize optimize_nops()")
Reported-by: Richard Narron <richard@aaazen.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=213301
Link: https://lkml.kernel.org/r/20210601212125.17145-1-bp@alien8.de
3 years agox86/cpufeatures: Force disable X86_FEATURE_ENQCMD and remove update_pasid()
Thomas Gleixner [Sat, 29 May 2021 09:17:30 +0000 (11:17 +0200)]
x86/cpufeatures: Force disable X86_FEATURE_ENQCMD and remove update_pasid()

While digesting the XSAVE-related horrors which got introduced with
the supervisor/user split, the recent addition of ENQCMD-related
functionality got on the radar and turned out to be similarly broken.

update_pasid(), which is only required when X86_FEATURE_ENQCMD is
available, is invoked from two places:

 1) From switch_to() for the incoming task

 2) Via a SMP function call from the IOMMU/SMV code

#1 is half-ways correct as it hacks around the brokenness of get_xsave_addr()
   by enforcing the state to be 'present', but all the conditionals in that
   code are completely pointless for that.

   Also the invocation is just useless overhead because at that point
   it's guaranteed that TIF_NEED_FPU_LOAD is set on the incoming task
   and all of this can be handled at return to user space.

#2 is broken beyond repair. The comment in the code claims that it is safe
   to invoke this in an IPI, but that's just wishful thinking.

   FPU state of a running task is protected by fregs_lock() which is
   nothing else than a local_bh_disable(). As BH-disabled regions run
   usually with interrupts enabled the IPI can hit a code section which
   modifies FPU state and there is absolutely no guarantee that any of the
   assumptions which are made for the IPI case is true.

   Also the IPI is sent to all CPUs in mm_cpumask(mm), but the IPI is
   invoked with a NULL pointer argument, so it can hit a completely
   unrelated task and unconditionally force an update for nothing.
   Worse, it can hit a kernel thread which operates on a user space
   address space and set a random PASID for it.

The offending commit does not cleanly revert, but it's sufficient to
force disable X86_FEATURE_ENQCMD and to remove the broken update_pasid()
code to make this dysfunctional all over the place. Anything more
complex would require more surgery and none of the related functions
outside of the x86 core code are blatantly wrong, so removing those
would be overkill.

As nothing enables the PASID bit in the IA32_XSS MSR yet, which is
required to make this actually work, this cannot result in a regression
except for related out of tree train-wrecks, but they are broken already
today.

Fixes: 20f0afd1fb3d ("x86/mmu: Allocate/free a PASID")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/87mtsd6gr9.ffs@nanos.tec.linutronix.de
3 years agodmaengine: idxd: Use cpu_feature_enabled()
Borislav Petkov [Wed, 2 Jun 2021 10:07:52 +0000 (12:07 +0200)]
dmaengine: idxd: Use cpu_feature_enabled()

When testing x86 feature bits, use cpu_feature_enabled() so that
build-disabled features can remain off, regardless of what CPUID says.

Fixes: 8e50d392652f ("dmaengine: idxd: Add shared workqueue support")
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-By: Vinod Koul <vkoul@kernel.org>
Cc: <stable@vger.kernel.org>
3 years agoMerge tag 'nvme-5.13-2021-06-03' of git://git.infradead.org/nvme into block-5.13
Jens Axboe [Thu, 3 Jun 2021 13:42:27 +0000 (07:42 -0600)]
Merge tag 'nvme-5.13-2021-06-03' of git://git.infradead.org/nvme into block-5.13

Pull NVMe fixes from Christoph:

"nvme fixes for Linux 5.13:

 - fix corruption in RDMA in-capsule SGLs (Sagi Grimberg)
 - nvme-loop reset fixes (Hannes Reinecke)
 - nvmet fix for freeing unallocated p2pmem (Max Gurtovoy)"

* tag 'nvme-5.13-2021-06-03' of git://git.infradead.org/nvme:
  nvmet: fix freeing unallocated p2pmem
  nvme-loop: do not warn for deleted controllers during reset
  nvme-loop: check for NVME_LOOP_Q_LIVE in nvme_loop_destroy_admin_queue()
  nvme-loop: clear NVME_LOOP_Q_LIVE when nvme_loop_configure_admin_queue() fails
  nvme-loop: reset queue count to 1 in nvme_loop_destroy_io_queues()
  nvme-rdma: fix in-casule data send for chained sgls

3 years agoMAINTAINERS: add btrfs IRC link
David Sterba [Thu, 3 Jun 2021 13:36:52 +0000 (15:36 +0200)]
MAINTAINERS: add btrfs IRC link

We haven't had an IRC link before but now it's a good time to announce
where to reach the community.

Signed-off-by: David Sterba <dsterba@suse.com>
3 years agoieee802154: fix error return code in ieee802154_llsec_getparams()
Wei Yongjun [Wed, 19 May 2021 14:16:14 +0000 (14:16 +0000)]
ieee802154: fix error return code in ieee802154_llsec_getparams()

Fix to return negative error code -ENOBUFS from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 3e9c156e2c21 ("ieee802154: add netlink interfaces for llsec")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20210519141614.3040055-1-weiyongjun1@huawei.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
3 years agoieee802154: fix error return code in ieee802154_add_iface()
Zhen Lei [Sat, 8 May 2021 06:25:17 +0000 (14:25 +0800)]
ieee802154: fix error return code in ieee802154_add_iface()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: be51da0f3e34 ("ieee802154: Stop using NLA_PUT*().")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20210508062517.2574-1-thunder.leizhen@huawei.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
3 years agonet: ieee802154: mrf24j40: Drop unneeded of_match_ptr()
Andy Shevchenko [Mon, 31 May 2021 13:22:26 +0000 (16:22 +0300)]
net: ieee802154: mrf24j40: Drop unneeded of_match_ptr()

Driver can be used in different environments and moreover, when compiled
with !OF, the compiler may issue a warning due to unused mrf24j40_of_match
variable. Hence drop unneeded of_match_ptr() call.

While at it, update headers block to reflect above changes.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210531132226.47081-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
3 years agonet/ieee802154: drop unneeded assignment in llsec_iter_devkeys()
Yang Li [Sun, 25 Apr 2021 10:24:59 +0000 (18:24 +0800)]
net/ieee802154: drop unneeded assignment in llsec_iter_devkeys()

In order to keep the code style consistency of the whole file,
redundant return value ‘rc’ and its assignments should be deleted

The clang_analyzer complains as follows:
net/ieee802154/nl-mac.c:1203:12: warning: Although the value stored to
'rc' is used in the enclosing expression, the value is never actually
read from 'rc'

No functional change, only more efficient.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/1619346299-40237-1-git-send-email-yang.lee@linux.alibaba.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
3 years agoALSA: hda: update the power_state during the direct-complete
Hui Wang [Wed, 2 Jun 2021 14:54:24 +0000 (22:54 +0800)]
ALSA: hda: update the power_state during the direct-complete

The patch_realtek.c needs to check if the power_state.event equals
PM_EVENT_SUSPEND, after using the direct-complete, the suspend() and
resume() will be skipped if the codec is already rt_suspended, in this
case, the patch_realtek.c will always get PM_EVENT_ON even the system
is really resumed from S3.

We could set power_state to PMSG_SUSPEND in the prepare(), if other
PM functions are called before complete(), those functions will
override power_state; if no other PM functions are called before
complete(), we could know the suspend() and resume() are skipped since
only S3 pm functions could be skipped by direct-complete, in this case
set power_state to PMSG_RESUME in the complete(). This could guarantee
the first time of calling hda_codec_runtime_resume() after complete()
has the correct power_state.

Fixes: 215a22ed31a1 ("ALSA: hda: Refactor codec PM to use direct-complete optimization")
Cc: <stable@vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Link: https://lore.kernel.org/r/20210602145424.3132-1-hui.wang@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>