platform/kernel/linux-rpi.git
3 years agorbd: resurrect setting of disk->private_data in rbd_init_disk()
Ilya Dryomov [Wed, 21 Jul 2021 10:16:26 +0000 (12:16 +0200)]
rbd: resurrect setting of disk->private_data in rbd_init_disk()

rbd_open() and rbd_release() expect that disk->private_data is set to
rbd_dev.  Otherwise we hit a NULL pointer dereference when mapping the
image.

URL: https://tracker.ceph.com/issues/51759
Fixes: 195b1956b85b ("rbd: use blk_mq_alloc_disk and blk_cleanup_disk")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
3 years agor8169: Avoid duplicate sysfs entry creation error
Sayanta Pattanayak [Tue, 20 Jul 2021 16:17:40 +0000 (17:17 +0100)]
r8169: Avoid duplicate sysfs entry creation error

When registering the MDIO bus for a r8169 device, we use the PCI
bus/device specifier as a (seemingly) unique device identifier.
However the very same BDF number can be used on another PCI segment,
which makes the driver fail probing:

[ 27.544136] r8169 0002:07:00.0: enabling device (0000 -> 0003)
[ 27.559734] sysfs: cannot create duplicate filename '/class/mdio_bus/r8169-700'
....
[ 27.684858] libphy: mii_bus r8169-700 failed to register
[ 27.695602] r8169: probe of 0002:07:00.0 failed with error -22

Add the segment number to the device name to make it more unique.

This fixes operation on ARM N1SDP boards, with two boards connected
together to form an SMP system, and all on-board devices showing up
twice, just on different PCI segments. A similar issue would occur on
large systems with many PCI slots and multiple RTL8169 NICs.

Fixes: f1e911d5d0dfd ("r8169: add basic phylib support")
Signed-off-by: Sayanta Pattanayak <sayanta.pattanayak@arm.com>
[Andre: expand commit message, use pci_domain_nr()]
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodriver core: auxiliary bus: Fix memory leak when driver_register() fail
Peter Ujfalusi [Tue, 13 Jul 2021 09:34:38 +0000 (12:34 +0300)]
driver core: auxiliary bus: Fix memory leak when driver_register() fail

If driver_register() returns with error we need to free the memory
allocated for auxdrv->driver.name before returning from
__auxiliary_driver_register()

Fixes: 7de3697e9cbd4 ("Add auxiliary bus support")
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20210713093438.3173-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoafs: Remove redundant assignment to ret
Jiapeng Chong [Thu, 29 Apr 2021 10:18:12 +0000 (18:18 +0800)]
afs: Remove redundant assignment to ret

Variable ret is set to -ENOENT and -ENOMEM but this value is never
read as it is overwritten or not used later on, hence it is a
redundant assignment and can be removed.

Cleans up the following clang-analyzer warning:

fs/afs/dir.c:2014:4: warning: Value stored to 'ret' is never read
[clang-analyzer-deadcode.DeadStores].

fs/afs/dir.c:659:2: warning: Value stored to 'ret' is never read
[clang-analyzer-deadcode.DeadStores].

[DH made the following modifications:

 - In afs_rename(), -ENOMEM should be placed in op->error instead of ret,
   rather than the assignment being removed entirely.  afs_put_operation()
   will pick it up from there and return it.

 - If afs_sillyrename() fails, its error code should be placed in op->error
   rather than in ret also.
]

Fixes: e49c7b2f6de7 ("afs: Build an abstraction around an "operation" concept")
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/1619691492-83866-1-git-send-email-jiapeng.chong@linux.alibaba.com
Link: https://lore.kernel.org/r/162609465444.3133237.7562832521724298900.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/162610729052.3408253.17364333638838151299.stgit@warthog.procyon.org.uk/
3 years agoafs: Fix setting of writeback_index
David Howells [Mon, 12 Jul 2021 16:04:47 +0000 (17:04 +0100)]
afs: Fix setting of writeback_index

Fix afs_writepages() to always set mapping->writeback_index to a page index
and not a byte position[1].

Fixes: 31143d5d515e ("AFS: implement basic file write support")
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/CAB9dFdvHsLsw7CMnB+4cgciWDSqVjuij4mH3TaXnHQB8sz5rHw@mail.gmail.com/
Link: https://lore.kernel.org/r/162610728339.3408253.4604750166391496546.stgit@warthog.procyon.org.uk/
3 years agoafs: check function return
Tom Rix [Fri, 30 Apr 2021 15:50:31 +0000 (08:50 -0700)]
afs: check function return

Static analysis reports this problem

write.c:773:29: warning: Assigned value is garbage or undefined
  mapping->writeback_index = next;
                           ^ ~~~~
The call to afs_writepages_region() can return without setting
next.  So check the function return before using next.

Changes:
 ver #2:
   - Need to fix the range_cyclic case also[1].

Fixes: e87b03f5830e ("afs: Prepare for use of THPs")
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/20210430155031.3287870-1-trix@redhat.com
Link: https://lore.kernel.org/r/CAB9dFdvHsLsw7CMnB+4cgciWDSqVjuij4mH3TaXnHQB8sz5rHw@mail.gmail.com/
Link: https://lore.kernel.org/r/162609464716.3133237.10354897554363093252.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/162610727640.3408253.8687445613469681311.stgit@warthog.procyon.org.uk/
3 years agoafs: Fix tracepoint string placement with built-in AFS
David Howells [Tue, 15 Jun 2021 10:57:26 +0000 (11:57 +0100)]
afs: Fix tracepoint string placement with built-in AFS

To quote Alexey[1]:

    I was adding custom tracepoint to the kernel, grabbed full F34 kernel
    .config, disabled modules and booted whole shebang as VM kernel.

    Then did

perf record -a -e ...

    It crashed:

general protection fault, probably for non-canonical address 0x435f5346592e4243: 0000 [#1] SMP PTI
CPU: 1 PID: 842 Comm: cat Not tainted 5.12.6+ #26
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014
RIP: 0010:t_show+0x22/0xd0

    Then reproducer was narrowed to

# cat /sys/kernel/tracing/printk_formats

    Original F34 kernel with modules didn't crash.

    So I started to disable options and after disabling AFS everything
    started working again.

    The root cause is that AFS was placing char arrays content into a
    section full of _pointers_ to strings with predictable consequences.

    Non canonical address 435f5346592e4243 is "CB.YFS_" which came from
    CM_NAME macro.

    Steps to reproduce:

CONFIG_AFS=y
CONFIG_TRACING=y

# cat /sys/kernel/tracing/printk_formats

Fix this by the following means:

 (1) Add enum->string translation tables in the event header with the AFS
     and YFS cache/callback manager operations listed by RPC operation ID.

 (2) Modify the afs_cb_call tracepoint to print the string from the
     translation table rather than using the string at the afs_call name
     pointer.

 (3) Switch translation table depending on the service we're being accessed
     as (AFS or YFS) in the tracepoint print clause.  Will this cause
     problems to userspace utilities?

     Note that the symbolic representation of the YFS service ID isn't
     available to this header, so I've put it in as a number.  I'm not sure
     if this is the best way to do this.

 (4) Remove the name wrangling (CM_NAME) macro and put the names directly
     into the afs_call_type structs in cmservice.c.

Fixes: 8e8d7f13b6d5a9 ("afs: Add some tracepoints")
Reported-by: Alexey Dobriyan (SK hynix) <adobriyan@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: Andrew Morton <akpm@linux-foundation.org>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/YLAXfvZ+rObEOdc%2F@localhost.localdomain/
Link: https://lore.kernel.org/r/643721.1623754699@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/162430903582.2896199.6098150063997983353.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/162609463957.3133237.15916579353149746363.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/162610726860.3408253.445207609466288531.stgit@warthog.procyon.org.uk/
3 years agonds32: fix up stack guard gap
Greg Kroah-Hartman [Tue, 29 Jun 2021 10:40:24 +0000 (12:40 +0200)]
nds32: fix up stack guard gap

Commit 1be7107fbe18 ("mm: larger stack guard gap, between vmas") fixed
up all architectures to deal with the stack guard gap.  But when nds32
was added to the tree, it forgot to do the same thing.

Resolve this by properly fixing up the nsd32's version of
arch_get_unmapped_area()

Cc: Nick Hu <nickhu@andestech.com>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Qiang Liu <cyruscyliu@gmail.com>
Cc: stable <stable@vger.kernel.org>
Reported-by: iLifetruth <yixiaonn@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Link: https://lore.kernel.org/r/20210629104024.2293615-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoMAINTAINERS: Change ACRN HSM driver maintainer
Shuo Liu [Wed, 14 Jul 2021 08:26:14 +0000 (16:26 +0800)]
MAINTAINERS: Change ACRN HSM driver maintainer

Shuo steps down, Fei will take over.

Acked-by: Fei Li <fei1.li@intel.com>
Signed-off-by: Shuo Liu <shuo.a.liu@intel.com>
Link: https://lore.kernel.org/r/20210714082614.88560-1-shuo.a.liu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoMAINTAINERS: Update for VMCI driver
Jorgen Hansen [Wed, 21 Jul 2021 10:02:46 +0000 (03:02 -0700)]
MAINTAINERS: Update for VMCI driver

Add maintainer info for the VMware VMCI driver.

v2: moved pv-drivers to L: as private list

Acked-by: Vishnu Dasa <vdasa@vmware.com>
Signed-off-by: Jorgen Hansen <jhansen@vmware.com>
Link: https://lore.kernel.org/r/1626861766-11115-1-git-send-email-jhansen@vmware.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agobus: mhi: pci_generic: Fix inbound IPCR channel
Loic Poulain [Fri, 16 Jul 2021 07:51:06 +0000 (13:21 +0530)]
bus: mhi: pci_generic: Fix inbound IPCR channel

The qrtr-mhi client driver assumes that inbound buffers are
automatically allocated and queued by the MHI core, but this
doesn't happen for mhi pci devices since IPCR inbound channel is
not flagged with auto_queue, causing unusable IPCR (qrtr)
feature. Fix that.

Link: https://lore.kernel.org/r/1625736749-24947-1-git-send-email-loic.poulain@linaro.org
[mani: fixed a spelling mistake in commit description]
Fixes: 855a70c12021 ("bus: mhi: Add MHI PCI support for WWAN modems")
Cc: stable@vger.kernel.org #5.10
Reviewed-by: Hemant kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210716075106.49938-4-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agobus: mhi: core: Validate channel ID when processing command completions
Bhaumik Bhatt [Fri, 16 Jul 2021 07:51:05 +0000 (13:21 +0530)]
bus: mhi: core: Validate channel ID when processing command completions

MHI reads the channel ID from the event ring element sent by the
device which can be any value between 0 and 255. In order to
prevent any out of bound accesses, add a check against the maximum
number of channels supported by the controller and those channels
not configured yet so as to skip processing of that event ring
element.

Link: https://lore.kernel.org/r/1624558141-11045-1-git-send-email-bbhatt@codeaurora.org
Fixes: 1d3173a3bae7 ("bus: mhi: core: Add support for processing events from client device")
Cc: stable@vger.kernel.org #5.10
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210716075106.49938-3-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agobus: mhi: pci_generic: Apply no-op for wake using sideband wake boolean
Bhaumik Bhatt [Fri, 16 Jul 2021 07:51:04 +0000 (13:21 +0530)]
bus: mhi: pci_generic: Apply no-op for wake using sideband wake boolean

Devices such as SDX24 do not have the provision for inband wake
doorbell in the form of channel 127 and instead have a sideband
GPIO for it. Newer devices such as SDX55 or SDX65 support inband
wake method by default. Ensure the functionality is used based on
this such that device wake stays held when a client driver uses
mhi_device_get() API or the equivalent debugfs entry.

Link: https://lore.kernel.org/r/1624560809-30610-1-git-send-email-bbhatt@codeaurora.org
Fixes: e3e5e6508fc1 ("bus: mhi: pci_generic: No-Op for device_wake operations")
Cc: stable@vger.kernel.org #5.12
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210716075106.49938-2-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agodrm/ttm: add missing NULL checks
Pavel Skripkin [Thu, 8 Jul 2021 11:25:18 +0000 (14:25 +0300)]
drm/ttm: add missing NULL checks

My local syzbot instance hit GPF in ttm_bo_release().
Unfortunately, syzbot didn't produce a reproducer for this, but I
found out possible scenario:

drm_gem_vram_create()            <-- drm_gem_vram_object kzalloced
     (bo embedded in this object)
  ttm_bo_init()
    ttm_bo_init_reserved()
      ttm_resource_alloc()
        man->func->alloc()       <-- allocation failure
      ttm_bo_put()
ttm_bo_release()
  ttm_mem_io_free()      <-- bo->resource == NULL passed
     as second argument
     *GPF*

Added NULL check inside ttm_mem_io_free() to prevent reported GPF and
make this function NULL save in future.

Same problem was in ttm_bo_move_to_lru_tail() as Christian reported.
ttm_bo_move_to_lru_tail() is called in ttm_bo_release() and mem pointer
can be NULL as well as in ttm_mem_io_free().

Fail log:

KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
...
RIP: 0010:ttm_mem_io_free+0x28/0x170 drivers/gpu/drm/ttm/ttm_bo_util.c:66
..
Call Trace:
 ttm_bo_release+0xd94/0x10a0 drivers/gpu/drm/ttm/ttm_bo.c:422
 kref_put include/linux/kref.h:65 [inline]
 ttm_bo_put drivers/gpu/drm/ttm/ttm_bo.c:470 [inline]
 ttm_bo_init_reserved+0x7cb/0x960 drivers/gpu/drm/ttm/ttm_bo.c:1050
 ttm_bo_init+0x105/0x270 drivers/gpu/drm/ttm/ttm_bo.c:1074
 drm_gem_vram_create+0x332/0x4c0 drivers/gpu/drm/drm_gem_vram_helper.c:228

Fixes: d3116756a710 ("drm/ttm: rename bo->mem and make it a pointer")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210708112518.17271-1-paskripkin@gmail.com
3 years agoRevert "mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge"
Jonathan Marek [Wed, 21 Jul 2021 07:02:13 +0000 (17:02 +1000)]
Revert "mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge"

This reverts commit c742199a014de23ee92055c2473d91fe5561ffdf.

c742199a014d ("mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge")
breaks arm64 in at least two ways for configurations where PUD or PMD
folding occur:

  1. We no longer install huge-vmap mappings and silently fall back to
     page-granular entries, despite being able to install block entries
     at what is effectively the PGD level.

  2. If the linear map is backed with block mappings, these will now
     silently fail to be created in alloc_init_pud(), causing a panic
     early during boot.

The pgtable selftests caught this, although a fix has not been
forthcoming and Christophe is AWOL at the moment, so just revert the
change for now to get a working -rc3 on which we can queue patches for
5.15.

A simple revert breaks the build for 32-bit PowerPC 8xx machines, which
rely on the default function definitions when the corresponding
page-table levels are folded, since commit a6a8f7c4aa7e ("powerpc/8xx:
add support for huge pages on VMAP and VMALLOC"), eg:

  powerpc64-linux-ld: mm/vmalloc.o: in function `vunmap_pud_range':
  linux/mm/vmalloc.c:362: undefined reference to `pud_clear_huge'

To avoid that, add stubs for pud_clear_huge() and pmd_clear_huge() in
arch/powerpc/mm/nohash/8xx.c as suggested by Christophe.

Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Fixes: c742199a014d ("mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Marc Zyngier <maz@kernel.org>
[mpe: Fold in 8xx.c changes from Christophe and mention in change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/linux-arm-kernel/CAMuHMdXShORDox-xxaeUfDW3wx2PeggFSqhVSHVZNKCGK-y_vQ@mail.gmail.com/
Link: https://lore.kernel.org/r/20210717160118.9855-1-jonathan@marek.ca
Link: https://lore.kernel.org/r/87r1fs1762.fsf@mpe.ellerman.id.au
Signed-off-by: Will Deacon <will@kernel.org>
3 years agoarm64: smccc: Save lr before calling __arm_smccc_sve_check()
Jean-Philippe Brucker [Wed, 21 Jul 2021 07:18:35 +0000 (09:18 +0200)]
arm64: smccc: Save lr before calling __arm_smccc_sve_check()

Commit cfa7ff959a78 ("arm64: smccc: Support SMCCC v1.3 SVE register
saving hint") added a call to __arm_smccc_sve_check() which clobbers the
lr (register x30), causing __arm_smccc_hvc() to return to itself and
crash. Save lr on the stack before calling __arm_smccc_sve_check(). Save
the frame pointer (x29) to complete the frame record, and adjust the
offsets used to access stack parameters.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Fixes: cfa7ff959a78 ("arm64: smccc: Support SMCCC v1.3 SVE register saving hint")
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20210721071834.69130-1-jean-philippe@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
3 years agoRevert "USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem"
Vincent Palatin [Wed, 21 Jul 2021 09:25:16 +0000 (11:25 +0200)]
Revert "USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem"

This reverts commit 0bd860493f81eb2a46173f6f5e44cc38331c8dbd.

While the patch was working as stated,ie preventing the L850-GL LTE modem
from crashing on some U3 wake-ups due to a race condition between the
host wake-up and the modem-side wake-up, when using the MBIM interface,
this would force disabling the USB runtime PM on the device.

The increased power consumption is significant for LTE laptops,
and given that with decently recent modem firmwares, when the modem hits
the bug, it automatically recovers (ie it drops from the bus, but
automatically re-enumerates after less than half a second, rather than being
stuck until a power cycle as it was doing with ancient firmware), for
most people, the trade-off now seems in favor of re-enabling it by
default.

For people with access to the platform code, the bug can also be worked-around
successfully by changing the USB3 LFPM polling off-time for the XHCI
controller in the BIOS code.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Link: https://lore.kernel.org/r/20210721092516.2775971-1-vpalatin@chromium.org
Fixes: 0bd860493f81 ("USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: cdc-wdm: fix build error when CONFIG_WWAN_CORE is not set
Wei Yongjun [Fri, 21 May 2021 02:10:10 +0000 (02:10 +0000)]
usb: cdc-wdm: fix build error when CONFIG_WWAN_CORE is not set

Gcc report build error as following when CONFIG_WWAN_CORE is not set:

x86_64-linux-gnu-ld: drivers/usb/class/cdc-wdm.o: in function `wdm_disconnect':
cdc-wdm.c:(.text+0xb2a): undefined reference to `wwan_remove_port'
x86_64-linux-gnu-ld: drivers/usb/class/cdc-wdm.o: in function `wdm_in_callback':
cdc-wdm.c:(.text+0xf23): undefined reference to `wwan_port_rx'
x86_64-linux-gnu-ld: drivers/usb/class/cdc-wdm.o: in function `wdm_wwan_port_stop':
cdc-wdm.c:(.text+0x127d): undefined reference to `wwan_port_get_drvdata'
x86_64-linux-gnu-ld: drivers/usb/class/cdc-wdm.o: in function `wdm_wwan_port_tx':
cdc-wdm.c:(.text+0x12d9): undefined reference to `wwan_port_get_drvdata'
x86_64-linux-gnu-ld: cdc-wdm.c:(.text+0x13c1): undefined reference to `wwan_port_txoff'
x86_64-linux-gnu-ld: drivers/usb/class/cdc-wdm.o: in function `wdm_wwan_port_start':
cdc-wdm.c:(.text+0x13e0): undefined reference to `wwan_port_get_drvdata'
x86_64-linux-gnu-ld: cdc-wdm.c:(.text+0x1431): undefined reference to `wwan_port_txon'
x86_64-linux-gnu-ld: drivers/usb/class/cdc-wdm.o: in function `wdm_wwan_port_tx_complete':
cdc-wdm.c:(.text+0x14a4): undefined reference to `wwan_port_txon'
x86_64-linux-gnu-ld: drivers/usb/class/cdc-wdm.o: in function `wdm_create.cold':
cdc-wdm.c:(.text.unlikely+0x209): undefined reference to `wwan_create_port'

Using CONFIG_WWAN_CORE instead of CONFIG_WWAN to avoid build error.

Fixes: cac6fb015f71 ("usb: class: cdc-wdm: WWAN framework integration")
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20210521021010.2490930-1-weiyongjun1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agonvme: fix nvme_setup_command metadata trace event
Keith Busch [Mon, 19 Jul 2021 16:44:39 +0000 (09:44 -0700)]
nvme: fix nvme_setup_command metadata trace event

The metadata address is set after the trace event, so the trace is not
capturing anything useful. Rather than logging the memory address, it's
useful to know if the command carries a metadata payload, so change the
trace event to log that true/false state instead.

Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme: fix refcounting imbalance when all paths are down
Hannes Reinecke [Fri, 16 Jul 2021 11:30:35 +0000 (13:30 +0200)]
nvme: fix refcounting imbalance when all paths are down

When the last path to a ns_head drops the current code
removes the ns_head from the subsystem list, but will only
delete the disk itself if the last reference to the ns_head
drops. This is causing an refcounting imbalance eg when
applications have a reference to the disk, as then they'll
never get notified that the disk is in fact dead.
This patch moves the call 'del_gendisk' into nvme_mpath_check_last_path(),
ensuring that the disk can be properly removed and applications get the
appropriate notifications.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-pci: don't WARN_ON in nvme_reset_work if ctrl.state is not RESETTING
Zhihao Cheng [Mon, 5 Jul 2021 13:38:29 +0000 (21:38 +0800)]
nvme-pci: don't WARN_ON in nvme_reset_work if ctrl.state is not RESETTING

Followling process:
nvme_probe
  nvme_reset_ctrl
    nvme_change_ctrl_state(ctrl, NVME_CTRL_RESETTING)
    queue_work(nvme_reset_wq, &ctrl->reset_work)

--------------> nvme_remove
  nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_DELETING)
worker_thread
  process_one_work
    nvme_reset_work
    WARN_ON(dev->ctrl.state != NVME_CTRL_RESETTING)

, which will trigger WARN_ON in nvme_reset_work():
[  127.534298] WARNING: CPU: 0 PID: 139 at drivers/nvme/host/pci.c:2594
[  127.536161] CPU: 0 PID: 139 Comm: kworker/u8:7 Not tainted 5.13.0
[  127.552518] Call Trace:
[  127.552840]  ? kvm_sched_clock_read+0x25/0x40
[  127.553936]  ? native_send_call_func_single_ipi+0x1c/0x30
[  127.555117]  ? send_call_function_single_ipi+0x9b/0x130
[  127.556263]  ? __smp_call_single_queue+0x48/0x60
[  127.557278]  ? ttwu_queue_wakelist+0xfa/0x1c0
[  127.558231]  ? try_to_wake_up+0x265/0x9d0
[  127.559120]  ? ext4_end_io_rsv_work+0x160/0x290
[  127.560118]  process_one_work+0x28c/0x640
[  127.561002]  worker_thread+0x39a/0x700
[  127.561833]  ? rescuer_thread+0x580/0x580
[  127.562714]  kthread+0x18c/0x1e0
[  127.563444]  ? set_kthread_struct+0x70/0x70
[  127.564347]  ret_from_fork+0x1f/0x30

The preceding problem can be easily reproduced by executing following
script (based on blktests suite):
test() {
  pdev="$(_get_pci_dev_from_blkdev)"
  sysfs="/sys/bus/pci/devices/${pdev}"
  for ((i = 0; i < 10; i++)); do
    echo 1 > "$sysfs/remove"
    echo 1 > /sys/bus/pci/rescan
  done
}

Since the device ctrl could be updated as an non-RESETTING state by
repeating probe/remove in userspace (which is a normal situation), we
can replace stack dumping WARN_ON with a warnning message.

Fixes: 82b057caefaff ("nvme-pci: fix multiple ctrl removal schedulin")
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
3 years agoRevert "arm64: dts: qcom: Harmonize DWC USB3 DT nodes name"
Greg Kroah-Hartman [Wed, 21 Jul 2021 07:55:38 +0000 (09:55 +0200)]
Revert "arm64: dts: qcom: Harmonize DWC USB3 DT nodes name"

This reverts commit eb9b7bfd5954f5f6ac4d57313541dd0294660aad as it
breaks working userspace implementations (i.e. Android systems)

The device node name here is part of configfs, so it is a user-visable
api that can not be changed.

Reported-by: John Stultz <john.stultz@linaro.org>
Cc: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/CALAqxLX_FNvFndEDWtGbFPjSzuAbfqxQE07diBJFZtftwEJX5A@mail.gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: dwc2: gadget: Fix sending zero length packet in DDMA mode.
Minas Harutyunyan [Tue, 20 Jul 2021 12:41:24 +0000 (05:41 -0700)]
usb: dwc2: gadget: Fix sending zero length packet in DDMA mode.

Sending zero length packet in DDMA mode perform by DMA descriptor
by setting SP (short packet) flag.

For DDMA in function dwc2_hsotg_complete_in() does not need to send
zlp.

Tested by USBCV MSC tests.

Fixes: f71b5e2533de ("usb: dwc2: gadget: fix zero length packet transfers")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/967bad78c55dd2db1c19714eee3d0a17cf99d74a.1626777738.git.Minas.Harutyunyan@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: dwc2: Skip clock gating on Samsung SoCs
Marek Szyprowski [Fri, 16 Jul 2021 05:01:27 +0000 (07:01 +0200)]
usb: dwc2: Skip clock gating on Samsung SoCs

Commit 0112b7ce68ea ("usb: dwc2: Update dwc2_handle_usb_suspend_intr
function.") changed the way the driver handles power down modes in a such
way that it uses clock gating when no other power down mode is available.

This however doesn't work well on the DWC2 implementation used on the
Samsung SoCs. When a clock gating is enabled, system hangs. It looks that
the proper clock gating requires some additional glue code in the shared
USB2 PHY and/or Samsung glue code for the DWC2. To restore driver
operation on the Samsung SoCs simply skip enabling clock gating mode
until one finds what is really needed to make it working reliably.

Fixes: 0112b7ce68ea ("usb: dwc2: Update dwc2_handle_usb_suspend_intr function.")
Cc: stable <stable@vger.kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20210716050127.4406-1-m.szyprowski@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: renesas_usbhs: Fix superfluous irqs happen after usb_pkt_pop()
Yoshihiro Shimoda [Thu, 24 Jun 2021 12:20:39 +0000 (21:20 +0900)]
usb: renesas_usbhs: Fix superfluous irqs happen after usb_pkt_pop()

This driver has a potential issue which this driver is possible to
cause superfluous irqs after usb_pkt_pop() is called. So, after
the commit 3af32605289e ("usb: renesas_usbhs: fix error return
code of usbhsf_pkt_handler()") had been applied, we could observe
the following error happened when we used g_audio.

    renesas_usbhs e6590000.usb: irq_ready run_error 1 : -22

To fix the issue, disable the tx or rx interrupt in usb_pkt_pop().

Fixes: 2743e7f90dc0 ("usb: renesas_usbhs: fix the usb_pkt_pop()")
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210624122039.596528-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: dwc2: gadget: Fix GOUTNAK flow for Slave mode.
Minas Harutyunyan [Tue, 13 Jul 2021 05:32:55 +0000 (09:32 +0400)]
usb: dwc2: gadget: Fix GOUTNAK flow for Slave mode.

Because of dwc2_hsotg_ep_stop_xfr() function uses poll
mode, first need to mask GINTSTS_GOUTNAKEFF interrupt.
In Slave mode GINTSTS_GOUTNAKEFF interrupt will be
aserted only after pop OUT NAK status packet from RxFIFO.

In dwc2_hsotg_ep_sethalt() function before setting
DCTL_SGOUTNAK need to unmask GOUTNAKEFF interrupt.

Tested by USBCV CH9 and MSC tests set in Slave, BDMA and DDMA.
All tests are passed.

Fixes: a4f827714539a ("usb: dwc2: gadget: Disable enabled HW endpoint in dwc2_hsotg_ep_disable")
Fixes: 6070636c4918c ("usb: dwc2: Fix Stalling a Non-Isochronous OUT EP")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/e17fad802bbcaf879e1ed6745030993abb93baf8.1626152924.git.Minas.Harutyunyan@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: phy: Fix page fault from usb_phy_uevent
Artur Petrosyan [Sat, 10 Jul 2021 09:22:46 +0000 (13:22 +0400)]
usb: phy: Fix page fault from usb_phy_uevent

When the dwc2 platform device is removed, it unregisters the generic
phy. usb_remove_phy() is called and the dwc2 usb_phy is removed from the
"phy_list", but the uevent may still attempt to get the usb_phy from the
list, resulting in a page fault bug. Currently we can't access the usb_phy
from the "phy_list" after the device is removed. As a fix check to make
sure that we can get the usb_phy before moving forward with the uevent.

[   84.949345] BUG: unable to handle page fault for address:00000007935688d8
[   84.949349] #PF: supervisor read access in kernel mode
[   84.949351] #PF: error_code(0x0000) - not-present page
[   84.949353] PGD 0 P4D 0
[   84.949356] Oops: 0000 [#1] SMP PTI
[   84.949360] CPU: 2 PID: 2081 Comm: rmmod Not tainted 5.13.0-rc4-snps-16547-ga8534cb092d7-dirty #32
[   84.949363] Hardware name: Hewlett-Packard HP Z400 Workstation/0B4Ch, BIOS 786G3 v03.54 11/02/2011
[   84.949365] RIP: 0010:usb_phy_uevent+0x99/0x121
[   84.949372] Code: 8d 83 f8 00 00 00 48 3d b0 12 22 94 74 05 4c 3b 23
75 5b 8b 83 9c 00 00 00 be 32 00 00 00 48 8d 7c 24 04 48 c7 c2 d4 5d 7b
93 <48> 8b 0c c5 e0 88 56 93 e8 0f 63 8a ff 8b 83 98 00 00 00 be 32 00
[   84.949375] RSP: 0018:ffffa46bc0f2fc70 EFLAGS: 00010246
[   84.949378] RAX: 00000000ffffffff RBX: ffffffff942211b8 RCX: 0000000000000027
[   84.949380] RDX: ffffffff937b5dd4 RSI: 0000000000000032 RDI: ffffa46bc0f2fc74
[   84.949383] RBP: ffff94a306613000 R08: 0000000000000000 R09: 00000000fffeffff
[   84.949385] R10: ffffa46bc0f2faa8 R11: ffffa46bc0f2faa0 R12: ffff94a30186d410
[   84.949387] R13: ffff94a32d188a80 R14: ffff94a30029f960 R15: ffffffff93522dd0
[   84.949389] FS:  00007efdbd417540(0000) GS:ffff94a513a80000(0000) knlGS:0000000000000000
[   84.949392] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   84.949394] CR2: 00000007935688d8 CR3: 0000000165606000 CR4: 00000000000006e0
[   84.949396] Call Trace:
[   84.949401]  dev_uevent+0x190/0x1ad
[   84.949408]  kobject_uevent_env+0x18e/0x46c
[   84.949414]  device_release_driver_internal+0x17f/0x18e
[   84.949418]  bus_remove_device+0xd3/0xe5
[   84.949421]  device_del+0x1c3/0x31d
[   84.949425]  ? kobject_put+0x97/0xa8
[   84.949428]  platform_device_del+0x1c/0x63
[   84.949432]  platform_device_unregister+0xa/0x11
[   84.949436]  dwc2_pci_remove+0x1e/0x2c [dwc2_pci]
[   84.949440]  pci_device_remove+0x31/0x81
[   84.949445]  device_release_driver_internal+0xea/0x18e
[   84.949448]  driver_detach+0x68/0x72
[   84.949450]  bus_remove_driver+0x63/0x82
[   84.949453]  pci_unregister_driver+0x1a/0x75
[   84.949457]  __do_sys_delete_module+0x149/0x1e9
[   84.949462]  ? task_work_run+0x64/0x6e
[   84.949465]  ? exit_to_user_mode_prepare+0xd4/0x10d
[   84.949471]  do_syscall_64+0x5d/0x70
[   84.949475]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   84.949480] RIP: 0033:0x7efdbd563bcb
[   84.949482] Code: 73 01 c3 48 8b 0d c5 82 0c 00 f7 d8 64 89 01 48 83
c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f
05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 95 82 0c 00 f7 d8 64 89 01 48
[   84.949485] RSP: 002b:00007ffe944d7d98 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
[   84.949489] RAX: ffffffffffffffda RBX: 00005651072eb700 RCX: 00007efdbd563bcb
[   84.949491] RDX: 000000000000000a RSI: 0000000000000800 RDI: 00005651072eb768
[   84.949493] RBP: 00007ffe944d7df8 R08: 0000000000000000 R09: 0000000000000000
[   84.949495] R10: 00007efdbd5dfac0 R11: 0000000000000206 R12: 00007ffe944d7fd0
[   84.949497] R13: 00007ffe944d8610 R14: 00005651072eb2a0 R15: 00005651072eb700
[   84.949500] Modules linked in: uas configfs dwc2_pci(-) phy_generic fuse crc32c_intel [last unloaded: udc_core]
[   84.949508] CR2: 00000007935688d8
[   84.949510] ---[ end trace e40c871ca3e4dc9e ]---
[   84.949512] RIP: 0010:usb_phy_uevent+0x99/0x121

Fixes: a8534cb092d7 ("usb: phy: introduce usb_phy device type with its own uevent handler")
Reviewed-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20210710092247.D7AFEA005D@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: xhci: avoid renesas_usb_fw.mem when it's unusable
Greg Thelen [Fri, 2 Jul 2021 07:12:24 +0000 (00:12 -0700)]
usb: xhci: avoid renesas_usb_fw.mem when it's unusable

Commit a66d21d7dba8 ("usb: xhci: Add support for Renesas controller with
memory") added renesas_usb_fw.mem firmware reference to xhci-pci.  Thus
modinfo indicates xhci-pci.ko has "firmware: renesas_usb_fw.mem".  But
the firmware is only actually used with CONFIG_USB_XHCI_PCI_RENESAS.  An
unusable firmware reference can trigger safety checkers which look for
drivers with unmet firmware dependencies.

Avoid referring to renesas_usb_fw.mem in circumstances when it cannot be
loaded (when CONFIG_USB_XHCI_PCI_RENESAS isn't set).

Fixes: a66d21d7dba8 ("usb: xhci: Add support for Renesas controller with memory")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Thelen <gthelen@google.com>
Link: https://lore.kernel.org/r/20210702071224.3673568-1-gthelen@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: gadget: u_serial: remove WARN_ON on null port
Colin Ian King [Thu, 1 Jul 2021 14:43:05 +0000 (15:43 +0100)]
usb: gadget: u_serial: remove WARN_ON on null port

Loading and then unloading module g_dpgp on a VM that does not
support the driver currently throws a WARN_ON message because
the port has not been initialized. Removing an unused driver
is a valid use-case and the WARN_ON kernel warning is a bit
excessive, so remove it.

Cleans up:

[27654.638698] ------------[ cut here ]------------
[27654.638705] WARNING: CPU: 6 PID: 2956336 at drivers/usb/gadget/function/u_serial.c:1201 gserial_free_line+0x7c/0x90 [u_serial]
[27654.638728] Modules linked in: g_dbgp(-) u_serial usb_f_tcm target_core_mod libcomposite udc_core vmw_vmci mcb i2c_nforce2 i2c_amd756 nfit cx8800 videobuf2_dma_sg videobuf2_memops videobuf2_v4l2 cx88xx tveeprom videobuf2_common videodev mc ccp hid_generic hid intel_ishtp cros_ec mc13xxx_core vfio_mdev mdev i915 i2c_algo_bit kvm ppdev parport zatm eni suni uPD98402 atm rio_scan binder_linux hwmon_vid video ipmi_devintf ipmi_msghandler zstd nls_utf8 decnet qrtr ns sctp ip6_udp_tunnel udp_tunnel fcrypt pcbc nhc_udp nhc_ipv6 nhc_routing nhc_mobility nhc_hop nhc_dest nhc_fragment 6lowpan ts_kmp dccp_ipv6 dccp_ipv4 dccp snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq_dummy snd_seq snd_seq_device xen_front_pgdir_shbuf binfmt_misc nls_iso8859_1 dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua intel_rapl_msr intel_rapl_common snd_hda_codec_generic ledtrig_audio snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd rapl soundcore joydev input_leds mac_hid serio_raw efi_pstore
[27654.638880]  qemu_fw_cfg sch_fq_codel msr virtio_rng autofs4 btrfs blake2b_generic zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear qxl drm_ttm_helper crct10dif_pclmul ttm drm_kms_helper syscopyarea sysfillrect sysimgblt virtio_net fb_sys_fops cec net_failover rc_core ahci psmouse drm libahci lpc_ich virtio_blk failover [last unloaded: u_ether]
[27654.638949] CPU: 6 PID: 2956336 Comm: modprobe Tainted: P           O      5.13.0-9-generic #9
[27654.638956] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015
[27654.638969] RIP: 0010:gserial_free_line+0x7c/0x90 [u_serial]
[27654.638981] Code: 20 00 00 00 00 e8 74 1a ba c9 4c 89 e7 e8 8c fe ff ff 48 8b 3d 75 3b 00 00 44 89 f6 e8 3d 7c 69 c9 5b 41 5c 41 5d 41 5e 5d c3 <0f> 0b 4c 89 ef e8 4a 1a ba c9 5b 41 5c 41 5d 41 5e 5d c3 90 0f 1f
[27654.638986] RSP: 0018:ffffba0b81403da0 EFLAGS: 00010246
[27654.638992] RAX: 0000000000000000 RBX: ffffffffc0eaf6a0 RCX: 0000000000000000
[27654.638996] RDX: ffff8e21c0cac8c0 RSI: 0000000000000006 RDI: ffffffffc0eaf6a0
[27654.639000] RBP: ffffba0b81403dc0 R08: ffffba0b81403de0 R09: fefefefefefefeff
[27654.639003] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[27654.639006] R13: ffffffffc0eaf6a0 R14: 0000000000000000 R15: 0000000000000000
[27654.639010] FS:  00007faa1935e740(0000) GS:ffff8e223bd80000(0000) knlGS:0000000000000000
[27654.639015] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[27654.639019] CR2: 00007ffc840cd4e8 CR3: 000000000e1ac006 CR4: 0000000000370ee0
[27654.639028] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[27654.639031] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[27654.639035] Call Trace:
[27654.639044]  dbgp_exit+0x1c/0xa1a [g_dbgp]
[27654.639054]  __do_sys_delete_module.constprop.0+0x144/0x260
[27654.639066]  ? call_rcu+0xe/0x10
[27654.639073]  __x64_sys_delete_module+0x12/0x20
[27654.639081]  do_syscall_64+0x61/0xb0
[27654.639092]  ? exit_to_user_mode_loop+0xec/0x160
[27654.639098]  ? exit_to_user_mode_prepare+0x37/0xb0
[27654.639104]  ? syscall_exit_to_user_mode+0x27/0x50
[27654.639110]  ? __x64_sys_close+0x12/0x40
[27654.639119]  ? do_syscall_64+0x6e/0xb0
[27654.639126]  ? exit_to_user_mode_prepare+0x37/0xb0
[27654.639132]  ? syscall_exit_to_user_mode+0x27/0x50
[27654.639137]  ? __x64_sys_newfstatat+0x1e/0x20
[27654.639146]  ? do_syscall_64+0x6e/0xb0
[27654.639154]  ? exc_page_fault+0x8f/0x170
[27654.639159]  ? asm_exc_page_fault+0x8/0x30
[27654.639166]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[27654.639173] RIP: 0033:0x7faa194a4b2b
[27654.639179] Code: 73 01 c3 48 8b 0d 3d 73 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 0d 73 0c 00 f7 d8 64 89 01 48
[27654.639185] RSP: 002b:00007ffc840d0578 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
[27654.639191] RAX: ffffffffffffffda RBX: 000056060f9f4e70 RCX: 00007faa194a4b2b
[27654.639194] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000056060f9f4ed8
[27654.639197] RBP: 000056060f9f4e70 R08: 0000000000000000 R09: 0000000000000000
[27654.639200] R10: 00007faa1951eac0 R11: 0000000000000206 R12: 000056060f9f4ed8
[27654.639203] R13: 0000000000000000 R14: 000056060f9f4ed8 R15: 00007ffc840d06c8
[27654.639219] ---[ end trace 8dd0ea0bb32ce94a ]---

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210701144305.110078-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: dwc3: avoid NULL access of usb_gadget_driver
Linyu Yuan [Tue, 29 Jun 2021 01:51:18 +0000 (09:51 +0800)]
usb: dwc3: avoid NULL access of usb_gadget_driver

we found crash in dwc3_disconnect_gadget(),
it is because dwc->gadget_driver become NULL before async access.
7dc0c55e9f30 ('USB: UDC core: Add udc_async_callbacks gadget op')
suggest a common way to avoid such kind of issue.

this change implment the callback in dwc3 and
change related functions which have callback to usb gadget driver.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Linyu Yuan <linyyuan@codeaurora.org>
Link: https://lore.kernel.org/r/20210629015118.7944-1-linyyuan@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: max-3421: Prevent corruption of freed memory
Mark Tomlinson [Fri, 25 Jun 2021 03:14:56 +0000 (15:14 +1200)]
usb: max-3421: Prevent corruption of freed memory

The MAX-3421 USB driver remembers the state of the USB toggles for a
device/endpoint. To save SPI writes, this was only done when a new
device/endpoint was being used. Unfortunately, if the old device was
removed, this would cause writes to freed memory.

To fix this, a simpler scheme is used. The toggles are read from
hardware when a URB is completed, and the toggles are always written to
hardware when any URB transaction is started. This will cause a few more
SPI transactions, but no causes kernel panics.

Fixes: 2d53139f3162 ("Add support for using a MAX3421E chip as a host driver.")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20210625031456.8632-1-mark.tomlinson@alliedtelesis.co.nz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: gadget: Fix Unbalanced pm_runtime_enable in tegra_xudc_probe
Zhang Qilong [Fri, 18 Jun 2021 14:14:41 +0000 (22:14 +0800)]
usb: gadget: Fix Unbalanced pm_runtime_enable in tegra_xudc_probe

Add missing pm_runtime_disable() when probe error out. It could
avoid pm_runtime implementation complains when removing and probing
again the driver.

Fixes: 49db427232fe ("usb: gadget: Add UDC driver for tegra XUSB device mode controller")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20210618141441.107817-1-zhangqilong3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoMAINTAINERS: repair reference in USB IP DRIVER FOR HISILICON KIRIN 970
Lukas Bulwahn [Thu, 1 Jul 2021 09:39:03 +0000 (11:39 +0200)]
MAINTAINERS: repair reference in USB IP DRIVER FOR HISILICON KIRIN 970

Commit 8de6b7edd493 ("phy: phy-hi3670-usb3: move driver from staging into
phy") moves phy-hi3670-usb3.c from ./drivers/staging/hikey9xx/ to
./drivers/phy/hisilicon/, but the new file entry in MAINTAINERS refers to
./drivers/phy/hisilicon/phy-kirin970-usb3.c.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains:

  warning: no file matches  F:  drivers/phy/hisilicon/phy-kirin970-usb3.c

Repair the file entry by referring to the right location.

Fixes: 8de6b7edd493 ("phy: phy-hi3670-usb3: move driver from staging into phy")
Acked-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20210701093903.28733-1-lukas.bulwahn@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: typec: stusb160x: Don't block probing of consumer of "connector" nodes
Amelie Delaunay [Fri, 16 Jul 2021 12:07:18 +0000 (14:07 +0200)]
usb: typec: stusb160x: Don't block probing of consumer of "connector" nodes

Similar as with tcpm this patch lets fw_devlink know not to wait on the
fwnode to be populated as a struct device.

Without this patch, USB functionality can be broken on some previously
supported boards.

Fixes: 28ec344bb891 ("usb: typec: tcpm: Don't block probing of consumers of "connector" nodes")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20210716120718.20398-3-amelie.delaunay@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: typec: stusb160x: register role switch before interrupt registration
Amelie Delaunay [Fri, 16 Jul 2021 12:07:17 +0000 (14:07 +0200)]
usb: typec: stusb160x: register role switch before interrupt registration

During interrupt registration, attach state is checked. If attached,
then the Type-C state is updated with typec_set_xxx functions and role
switch is set with usb_role_switch_set_role().

If the usb_role_switch parameter is error or null, the function simply
returns 0.

So, to update usb_role_switch role if a device is attached before the
irq is registered, usb_role_switch must be registered before irq
registration.

Fixes: da0cb6310094 ("usb: typec: add support for STUSB160x Type-C controller family")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20210716120718.20398-2-amelie.delaunay@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoUSB: usb-storage: Add LaCie Rugged USB3-FW to IGNORE_UAS
Julian Sikorski [Tue, 20 Jul 2021 17:19:10 +0000 (19:19 +0200)]
USB: usb-storage: Add LaCie Rugged USB3-FW to IGNORE_UAS

LaCie Rugged USB3-FW appears to be incompatible with UAS. It generates
errors like:
[ 1151.582598] sd 14:0:0:0: tag#16 uas_eh_abort_handler 0 uas-tag 1 inflight: IN
[ 1151.582602] sd 14:0:0:0: tag#16 CDB: Report supported operation codes a3 0c 01 12 00 00 00 00 02 00 00 00
[ 1151.588594] scsi host14: uas_eh_device_reset_handler start
[ 1151.710482] usb 2-4: reset SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[ 1151.741398] scsi host14: uas_eh_device_reset_handler success
[ 1181.785534] scsi host14: uas_eh_device_reset_handler start

Signed-off-by: Julian Sikorski <belegdol+github@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210720171910.36497-1-belegdol+github@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: ehci: Prevent missed ehci interrupts with edge-triggered MSI
David Jeffery [Thu, 15 Jul 2021 21:37:44 +0000 (17:37 -0400)]
usb: ehci: Prevent missed ehci interrupts with edge-triggered MSI

When MSI is used by the ehci-hcd driver, it can cause lost interrupts which
results in EHCI only continuing to work due to a polling fallback. But the
reliance of polling drastically reduces performance of any I/O through EHCI.

Interrupts are lost as the EHCI interrupt handler does not safely handle
edge-triggered interrupts. It fails to ensure all interrupt status bits are
cleared, which works with level-triggered interrupts but not the
edge-triggered interrupts typical from using MSI.

To fix this problem, check if the driver may have raced with the hardware
setting additional interrupt status bits and clear status until it is in a
stable state.

Fixes: 306c54d0edb6 ("usb: hcd: Try MSI interrupts on PCI devices")
Tested-by: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: David Jeffery <djeffery@redhat.com>
Link: https://lore.kernel.org/r/20210715213744.GA44506@redhat
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: hub: Disable USB 3 device initiated lpm if exit latency is too high
Mathias Nyman [Thu, 15 Jul 2021 15:01:22 +0000 (18:01 +0300)]
usb: hub: Disable USB 3 device initiated lpm if exit latency is too high

The device initiated link power management U1/U2 states should not be
enabled in case the system exit latency plus one bus interval (125us) is
greater than the shortest service interval of any periodic endpoint.

This is the case for both U1 and U2 sytstem exit latencies and link states.

See USB 3.2 section 9.4.9 "Set Feature" for more details

Note, before this patch the host and device initiated U1/U2 lpm states
were both enabled with lpm. After this patch it's possible to end up with
only host inititated U1/U2 lpm in case the exit latencies won't allow
device initiated lpm.

If this case we still want to set the udev->usb3_lpm_ux_enabled flag so
that sysfs users can see the link may go to U1/U2.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210715150122.1995966-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: hub: Fix link power management max exit latency (MEL) calculations
Mathias Nyman [Thu, 15 Jul 2021 15:01:21 +0000 (18:01 +0300)]
usb: hub: Fix link power management max exit latency (MEL) calculations

Maximum Exit Latency (MEL) value is used by host to know how much in
advance it needs to start waking up a U1/U2 suspended link in order to
service a periodic transfer in time.

Current MEL calculation only includes the time to wake up the path from
U1/U2 to U0. This is called tMEL1 in USB 3.1 section C 1.5.2

Total MEL = tMEL1 + tMEL2 +tMEL3 + tMEL4 which should additinally include:
- tMEL2 which is the time it takes for PING message to reach device
- tMEL3 time for device to process the PING and submit a PING_RESPONSE
- tMEL4 time for PING_RESPONSE to traverse back upstream to host.

Add the missing tMEL2, tMEL3 and tMEL4 to MEL calculation.

Cc: <stable@kernel.org> # v3.5
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210715150122.1995966-1-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: typec: tipd: Don't block probing of consumer of "connector" nodes
Martin Kepplinger [Wed, 14 Jul 2021 06:18:07 +0000 (08:18 +0200)]
usb: typec: tipd: Don't block probing of consumer of "connector" nodes

Similar as with tcpm this patch lets fw_devlink know not to wait on the
fwnode to be populated as a struct device.

Without this patch, USB functionality can be broken on some previously
supported boards.

Fixes: 28ec344bb891 ("usb: typec: tcpm: Don't block probing of consumers of "connector" nodes")
Cc: stable <stable@vger.kernel.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Link: https://lore.kernel.org/r/20210714061807.5737-1-martin.kepplinger@puri.sm
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoxhci: Fix lost USB 2 remote wake
Mathias Nyman [Thu, 15 Jul 2021 15:06:51 +0000 (18:06 +0300)]
xhci: Fix lost USB 2 remote wake

There's a small window where a USB 2 remote wake may be left unhandled
due to a race between hub thread and xhci port event interrupt handler.

When the resume event is detected in the xhci interrupt handler it kicks
the hub timer, which should move the port from resume to U0 once resume
has been signalled for long enough.

To keep the hub "thread" running we set a bus_state->resuming_ports flag.
This flag makes sure hub timer function kicks itself.

checking this flag was not properly protected by the spinlock. Flag was
copied to a local variable before lock was taken. The local variable was
then checked later with spinlock held.

If interrupt is handled right after copying the flag to the local variable
we end up stopping the hub thread before it can handle the USB 2 resume.

CPU0 CPU1
(hub thread) (xhci event handler)

xhci_hub_status_data()
status = bus_state->resuming_ports;
<Interrupt>
handle_port_status()
spin_lock()
bus_state->resuming_ports = 1
set_flag(HCD_FLAG_POLL_RH)
spin_unlock()
spin_lock()
if (!status)
  clear_flag(HCD_FLAG_POLL_RH)
spin_unlock()

Fix this by taking the lock a bit earlier so that it covers
the resuming_ports flag copy in the hub thread

Cc: <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210715150651.1996099-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "usb: renesas-xhci: Fix handling of unknown ROM state"
Moritz Fischer [Mon, 19 Jul 2021 07:05:19 +0000 (00:05 -0700)]
Revert "usb: renesas-xhci: Fix handling of unknown ROM state"

This reverts commit d143825baf15f204dac60acdf95e428182aa3374.

Justin reports some of his systems now fail as result of this commit:

 xhci_hcd 0000:04:00.0: Direct firmware load for renesas_usb_fw.mem failed with error -2
 xhci_hcd 0000:04:00.0: request_firmware failed: -2
 xhci_hcd: probe of 0000:04:00.0 failed with error -2

The revert brings back the original issue the commit tried to solve but
at least unbreaks existing systems relying on previous behavior.

Cc: stable@vger.kernel.org
Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Justin Forbes <jmforbes@linuxtx.org>
Reported-by: Justin Forbes <jmforbes@linuxtx.org>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Fixes: d143825baf15 ("usb: renesas-xhci: Fix handling of unknown ROM state")
Link: https://lore.kernel.org/r/20210719070519.41114-1-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agodrm/ttm: Force re-init if ttm_global_init() fails
Jason Ekstrand [Tue, 20 Jul 2021 18:13:55 +0000 (13:13 -0500)]
drm/ttm: Force re-init if ttm_global_init() fails

If we have a failure, decrement the reference count so that the next
call to ttm_global_init() will actually do something instead of assume
everything is all set up.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Fixes: 62b53b37e4b1 ("drm/ttm: use a static ttm_bo_global instance")
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210720181357.2760720-5-jason@jlekstrand.net
Signed-off-by: Christian König <christian.koenig@amd.com>
3 years agoixgbe: Fix packet corruption due to missing DMA sync
Markus Boehme [Tue, 20 Jul 2021 23:26:19 +0000 (16:26 -0700)]
ixgbe: Fix packet corruption due to missing DMA sync

When receiving a packet with multiple fragments, hardware may still
touch the first fragment until the entire packet has been received. The
driver therefore keeps the first fragment mapped for DMA until end of
packet has been asserted, and delays its dma_sync call until then.

The driver tries to fit multiple receive buffers on one page. When using
3K receive buffers (e.g. using Jumbo frames and legacy-rx is turned
off/build_skb is being used) on an architecture with 4K pages, the
driver allocates an order 1 compound page and uses one page per receive
buffer. To determine the correct offset for a delayed DMA sync of the
first fragment of a multi-fragment packet, the driver then cannot just
use PAGE_MASK on the DMA address but has to construct a mask based on
the actual size of the backing page.

Using PAGE_MASK in the 3K RX buffer/4K page architecture configuration
will always sync the first page of a compound page. With the SWIOTLB
enabled this can lead to corrupted packets (zeroed out first fragment,
re-used garbage from another packet) and various consequences, such as
slow/stalling data transfers and connection resets. For example, testing
on a link with MTU exceeding 3058 bytes on a host with SWIOTLB enabled
(e.g. "iommu=soft swiotlb=262144,force") TCP transfers quickly fizzle
out without this patch.

Cc: stable@vger.kernel.org
Fixes: 0c5661ecc5dd7 ("ixgbe: fix crash in build_skb Rx code path")
Signed-off-by: Markus Boehme <markubo@amazon.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoi2c: mpc: Poll for MCF
Chris Packham [Thu, 15 Jul 2021 20:58:32 +0000 (08:58 +1200)]
i2c: mpc: Poll for MCF

During some transfers the bus can still be busy when an interrupt is
received. Commit 763778cd7926 ("i2c: mpc: Restore reread of I2C status
register") attempted to address this by re-reading MPC_I2C_SR once but
that just made it less likely to happen without actually preventing it.
Instead of a single re-read, poll with a timeout so that the bus is given
enough time to settle but a genuine stuck SCL is still noticed.

Fixes: 1538d82f4647 ("i2c: mpc: Interrupt driven transfer")
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoMerge tag 'at24-fixes-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git...
Wolfram Sang [Tue, 20 Jul 2021 20:28:56 +0000 (22:28 +0200)]
Merge tag 'at24-fixes-for-v5.14' of git://git./linux/kernel/git/brgl/linux into i2c/for-current

at24 fixes for v5.14

- fix a problem with repeating labels not getting a device id

3 years agos390: update defconfigs
Heiko Carstens [Mon, 19 Jul 2021 19:58:21 +0000 (21:58 +0200)]
s390: update defconfigs

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
3 years agos390/cpumf: fix semicolon.cocci warnings
kernel test robot [Mon, 19 Jul 2021 04:41:41 +0000 (12:41 +0800)]
s390/cpumf: fix semicolon.cocci warnings

arch/s390/kernel/perf_cpum_cf.c:748:2-3: Unneeded semicolon

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Fixes: a029a4eab39e ("s390/cpumf: Allow concurrent access for CPU Measurement Counter Facility")
CC: Thomas Richter <tmricht@linux.ibm.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
3 years agos390/boot: fix use of expolines in the DMA code
Alexander Egorenkov [Fri, 16 Jul 2021 20:00:22 +0000 (22:00 +0200)]
s390/boot: fix use of expolines in the DMA code

The DMA code section of the decompressor must be compiled with expolines
if Spectre V2 mitigation has been enabled for the decompressed kernel.
This is required because although the decompressor's image contains
the DMA code section, it is handed over to the decompressed kernel for use.

Because the DMA code is already slow w/o expolines, use expolines always
regardless whether the decompressed kernel is using them or not. This
simplifies the DMA code by dropping the conditional compilation of
expolines.

Fixes: bf72630130c2 ("s390: use proper expoline sections for .dma code")
Cc: <stable@vger.kernel.org> # 5.2
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
3 years agoceph: don't WARN if we're still opening a session to an MDS
Luis Henriques [Thu, 15 Jul 2021 13:40:39 +0000 (14:40 +0100)]
ceph: don't WARN if we're still opening a session to an MDS

If MDSs aren't available while mounting a filesystem, the session state
will transition from SESSION_OPENING to SESSION_CLOSING.  And in that
scenario check_session_state() will be called from delayed_work() and
trigger this WARN.

Avoid this by only WARNing after a session has already been established
(i.e., the s_ttl will be different from 0).

Fixes: 62575e270f66 ("ceph: check session state after bumping session->s_seq")
Signed-off-by: Luis Henriques <lhenriques@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
3 years agorbd: don't hold lock_rwsem while running_list is being drained
Ilya Dryomov [Sat, 3 Jul 2021 09:31:26 +0000 (11:31 +0200)]
rbd: don't hold lock_rwsem while running_list is being drained

Currently rbd_quiesce_lock() holds lock_rwsem for read while blocking
on releasing_wait completion.  On the I/O completion side, each image
request also needs to take lock_rwsem for read.  Because rw_semaphore
implementation doesn't allow new readers after a writer has indicated
interest in the lock, this can result in a deadlock if something that
needs to take lock_rwsem for write gets involved.  For example:

1. watch error occurs
2. rbd_watch_errcb() takes lock_rwsem for write, clears owner_cid and
   releases lock_rwsem
3. after reestablishing the watch, rbd_reregister_watch() takes
   lock_rwsem for write and calls rbd_reacquire_lock()
4. rbd_quiesce_lock() downgrades lock_rwsem to for read and blocks on
   releasing_wait until running_list becomes empty
5. another watch error occurs
6. rbd_watch_errcb() blocks trying to take lock_rwsem for write
7. no in-flight image request can complete and delete itself from
   running_list because lock_rwsem won't be granted anymore

A similar scenario can occur with "lock has been acquired" and "lock
has been released" notification handers which also take lock_rwsem for
write to update owner_cid.

We don't actually get anything useful from sitting on lock_rwsem in
rbd_quiesce_lock() -- owner_cid updates certainly don't need to be
synchronized with.  In fact the whole owner_cid tracking logic could
probably be removed from the kernel client because we don't support
proxied maintenance operations.

Cc: stable@vger.kernel.org # 5.3+
URL: https://tracker.ceph.com/issues/42757
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Tested-by: Robin Geuze <robin.geuze@nl.team.blue>
3 years agorbd: always kick acquire on "acquired" and "released" notifications
Ilya Dryomov [Sat, 3 Jul 2021 09:56:55 +0000 (11:56 +0200)]
rbd: always kick acquire on "acquired" and "released" notifications

Skipping the "lock has been released" notification if the lock owner
is not what we expect based on owner_cid can lead to I/O hangs.
One example is our own notifications: because owner_cid is cleared
in rbd_unlock(), when we get our own notification it is processed as
unexpected/duplicate and maybe_kick_acquire() isn't called.  If a peer
that requested the lock then doesn't go through with acquiring it,
I/O requests that came in while the lock was being quiesced would
be stalled until another I/O request is submitted and kicks acquire
from rbd_img_exclusive_lock().

This makes the comment in rbd_release_lock() actually true: prior to
this change the canceled work was being requeued in response to the
"lock has been acquired" notification from rbd_handle_acquired_lock().

Cc: stable@vger.kernel.org # 5.3+
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Tested-by: Robin Geuze <robin.geuze@nl.team.blue>
3 years agoALSA: hda/hdmi: Add quirk to force pin connectivity on NUC10
Kai Vehmanen [Tue, 20 Jul 2021 15:32:16 +0000 (18:32 +0300)]
ALSA: hda/hdmi: Add quirk to force pin connectivity on NUC10

On some Intel NUC10 variants, codec reports AC_JACK_PORT_NONE as
pin default config for all pins. This results in broken audio.
Add a quirk to force connectivity.

BugLink: https://github.com/clearlinux/distribution/issues/2396
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210720153216.2200938-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
3 years agoRevert "qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()"
Jia He [Tue, 20 Jul 2021 13:26:55 +0000 (21:26 +0800)]
Revert "qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()"

This reverts commit 6206b7981a36476f4695d661ae139f7db36a802d.

That patch added additional spin_{un}lock_bh(), which was harmless
but pointless. The orginal code path has guaranteed the pair of
spin_{un}lock_bh().

We'd better revert it before we find the exact root cause of the
bug_on mentioned in that patch.

Fixes: 6206b7981a36 ("qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()")
Cc: David S. Miller <davem@davemloft.net>
Cc: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Jia He <justin.he@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
Paolo Abeni [Tue, 20 Jul 2021 13:08:40 +0000 (15:08 +0200)]
ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions

While running the self-tests on a KASAN enabled kernel, I observed a
slab-out-of-bounds splat very similar to the one reported in
commit 821bbf79fe46 ("ipv6: Fix KASAN: slab-out-of-bounds Read in
 fib6_nh_flush_exceptions").

We additionally need to take care of fib6_metrics initialization
failure when the caller provides an nh.

The fix is similar, explicitly free the route instead of calling
fib6_info_release on a half-initialized object.

Fixes: f88d8ea67fbdb ("ipv6: Plumb support for nexthop object in a fib6_info")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agofsl/fman: Add fibre support
Maxim Kochetkov [Tue, 20 Jul 2021 05:08:38 +0000 (08:08 +0300)]
fsl/fman: Add fibre support

Set SUPPORTED_FIBRE to mac_dev->if_support. It allows proper usage of
PHYs with optical/fiber support.

Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Acked-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/sched: act_skbmod: Skip non-Ethernet packets
Peilin Ye [Mon, 19 Jul 2021 23:41:24 +0000 (16:41 -0700)]
net/sched: act_skbmod: Skip non-Ethernet packets

Currently tcf_skbmod_act() assumes that packets use Ethernet as their L2
protocol, which is not always the case.  As an example, for CAN devices:

$ ip link add dev vcan0 type vcan
$ ip link set up vcan0
$ tc qdisc add dev vcan0 root handle 1: htb
$ tc filter add dev vcan0 parent 1: protocol ip prio 10 \
matchall action skbmod swap mac

Doing the above silently corrupts all the packets.  Do not perform skbmod
actions for non-Ethernet packets.

Fixes: 86da71b57383 ("net_sched: Introduce skbmod action")
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agomt7530 mt7530_fdb_write only set ivl bit vid larger than 1
Eric Woudstra [Mon, 19 Jul 2021 18:23:57 +0000 (20:23 +0200)]
mt7530 mt7530_fdb_write only set ivl bit vid larger than 1

Fixes my earlier patch which broke vlan unaware bridges.

The IVL bit now only gets set for vid's larger than 1.

Fixes: 11d8d98cbeef ("mt7530 fix mt7530_fdb_write vid missing ivl bit")
Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'octeon-DMAC'
David S. Miller [Tue, 20 Jul 2021 14:00:45 +0000 (07:00 -0700)]
Merge branch 'octeon-DMAC'

Subbaraya Sundeep says:

====================
octeontx2-af: Introduce DMAC based switching

With this patch set packets can be switched between
all CGX mapped PFs and VFs in the system based on
the DMAC addresses. To implement this:
AF allocates high priority rules from top entry(0) in MCAM.
Rules are allocated for all the CGX mapped PFs and VFs though
they are not active and with no NIXLFs attached.
Rules for a PF/VF will be enabled only after they are brought up.
Two rules one for TX and one for RX are allocated for each PF/VF.

A packet sent from a PF/VF with a destination mac of another
PF/VF will be hit by TX rule and sent to LBK channel 63. The
same returned packet will be hit by RX rule whose action is
to forward packet to PF/VF with that destination mac.

Implementation of this for 98xx is tricky since there are
two NIX blocks and till now a PF/VF can install rule for
an NIX0/1 interface only if it is mapped to corresponding NIX0/1 block.
Hence Tx rules are modified such that TX interface in MCAM
entry can be either NIX0-TX or NIX1-TX.

Testing:

1. Create two VFs over PF1(on NIX0) and assign two VFs to two VMs
2. Assign ip addresses to two VFs in VMs and PF2(on NIX1) in host.
3. Assign static arp entries in two VMs and PF2.
4. Ping between VMs and host PF2.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodrm: Return -ENOTTY for non-drm ioctls
Charles Baylis [Fri, 16 Jul 2021 16:43:12 +0000 (17:43 +0100)]
drm: Return -ENOTTY for non-drm ioctls

drm: Return -ENOTTY for non-drm ioctls

Return -ENOTTY from drm_ioctl() when userspace passes in a cmd number
which doesn't relate to the drm subsystem.

Glibc uses the TCGETS ioctl to implement isatty(), and without this
change isatty() returns it incorrectly returns true for drm devices.

To test run this command:
$ if [ -t 0 ]; then echo is a tty; fi < /dev/dri/card0
which shows "is a tty" without this patch.

This may also modify memory which the userspace application is not
expecting.

Signed-off-by: Charles Baylis <cb-kernel@fishzet.co.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/YPG3IBlzaMhfPqCr@stando.fishzet.co.uk
3 years agoio_uring: fix memleak in io_init_wq_offload()
Yang Yingliang [Tue, 20 Jul 2021 08:38:05 +0000 (16:38 +0800)]
io_uring: fix memleak in io_init_wq_offload()

I got memory leak report when doing fuzz test:

BUG: memory leak
unreferenced object 0xffff888107310a80 (size 96):
comm "syz-executor.6", pid 4610, jiffies 4295140240 (age 20.135s)
hex dump (first 32 bytes):
01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........
backtrace:
[<000000001974933b>] kmalloc include/linux/slab.h:591 [inline]
[<000000001974933b>] kzalloc include/linux/slab.h:721 [inline]
[<000000001974933b>] io_init_wq_offload fs/io_uring.c:7920 [inline]
[<000000001974933b>] io_uring_alloc_task_context+0x466/0x640 fs/io_uring.c:7955
[<0000000039d0800d>] __io_uring_add_tctx_node+0x256/0x360 fs/io_uring.c:9016
[<000000008482e78c>] io_uring_add_tctx_node fs/io_uring.c:9052 [inline]
[<000000008482e78c>] __do_sys_io_uring_enter fs/io_uring.c:9354 [inline]
[<000000008482e78c>] __se_sys_io_uring_enter fs/io_uring.c:9301 [inline]
[<000000008482e78c>] __x64_sys_io_uring_enter+0xabc/0xc20 fs/io_uring.c:9301
[<00000000b875f18f>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
[<00000000b875f18f>] do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
[<000000006b0a8484>] entry_SYSCALL_64_after_hwframe+0x44/0xae

CPU0                          CPU1
io_uring_enter                io_uring_enter
io_uring_add_tctx_node        io_uring_add_tctx_node
__io_uring_add_tctx_node      __io_uring_add_tctx_node
io_uring_alloc_task_context   io_uring_alloc_task_context
io_init_wq_offload            io_init_wq_offload
hash = kzalloc                hash = kzalloc
ctx->hash_map = hash          ctx->hash_map = hash <- one of the hash is leaked

When calling io_uring_enter() in parallel, the 'hash_map' will be leaked,
add uring_lock to protect 'hash_map'.

Fixes: e941894eae31 ("io-wq: make buffered file write hashed work map per-ctx")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20210720083805.3030730-1-yangyingliang@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoio_uring: remove double poll entry on arm failure
Pavel Begunkov [Tue, 20 Jul 2021 09:50:44 +0000 (10:50 +0100)]
io_uring: remove double poll entry on arm failure

__io_queue_proc() can enqueue both poll entries and still fail
afterwards, so the callers trying to cancel it should also try to remove
the second poll entry (if any).

For example, it may leave the request alive referencing a io_uring
context but not accessible for cancellation:

[  282.599913][ T1620] task:iou-sqp-23145   state:D stack:28720 pid:23155 ppid:  8844 flags:0x00004004
[  282.609927][ T1620] Call Trace:
[  282.613711][ T1620]  __schedule+0x93a/0x26f0
[  282.634647][ T1620]  schedule+0xd3/0x270
[  282.638874][ T1620]  io_uring_cancel_generic+0x54d/0x890
[  282.660346][ T1620]  io_sq_thread+0xaac/0x1250
[  282.696394][ T1620]  ret_from_fork+0x1f/0x30

Cc: stable@vger.kernel.org
Fixes: 18bceab101add ("io_uring: allow POLL_ADD with double poll_wait() users")
Reported-and-tested-by: syzbot+ac957324022b7132accf@syzkaller.appspotmail.com
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0ec1228fc5eda4cb524eeda857da8efdc43c331c.1626774457.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoio_uring: explicitly count entries for poll reqs
Pavel Begunkov [Tue, 20 Jul 2021 09:50:43 +0000 (10:50 +0100)]
io_uring: explicitly count entries for poll reqs

If __io_queue_proc() fails to add a second poll entry, e.g. kmalloc()
failed, but it goes on with a third waitqueue, it may succeed and
overwrite the error status. Count the number of poll entries we added,
so we can set pt->error to zero at the beginning and find out when the
mentioned scenario happens.

Cc: stable@vger.kernel.org
Fixes: 18bceab101add ("io_uring: allow POLL_ADD with double poll_wait() users")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/9d6b9e561f88bcc0163623b74a76c39f712151c3.1626774457.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agospi: spi-bcm2835: Fix deadlock
Alexandru Tachici [Fri, 16 Jul 2021 21:02:45 +0000 (00:02 +0300)]
spi: spi-bcm2835: Fix deadlock

The bcm2835_spi_transfer_one function can create a deadlock
if it is called while another thread already has the
CCF lock.

Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Fixes: f8043872e796 ("spi: add driver for BCM2835")
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20210716210245.13240-2-alexandru.tachici@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
3 years agoMerge branch 'net-hns3-fixes-for-net'
Jakub Kicinski [Tue, 20 Jul 2021 11:12:50 +0000 (13:12 +0200)]
Merge branch 'net-hns3-fixes-for-net'

Guangbin Huang says:

====================
net: hns3: fixes for -net

This series includes some bugfixes for the HNS3 ethernet driver.
====================

Link: https://lore.kernel.org/r/1626685988-25869-1-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: fix rx VLAN offload state inconsistent issue
Jian Shen [Mon, 19 Jul 2021 09:13:08 +0000 (17:13 +0800)]
net: hns3: fix rx VLAN offload state inconsistent issue

Currently, VF doesn't enable rx VLAN offload when initializating,
and PF does it for VFs. If user disable the rx VLAN offload for
VF with ethtool -K, and reload the VF driver, it may cause the
rx VLAN offload state being inconsistent between hardware and
software.

Fixes it by enabling rx VLAN offload when VF initializing.

Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: disable port VLAN filter when support function level VLAN filter control
Jian Shen [Mon, 19 Jul 2021 09:13:07 +0000 (17:13 +0800)]
net: hns3: disable port VLAN filter when support function level VLAN filter control

For hardware limitation, port VLAN filter is port level, and
effective for all the functions of the port. So if not support
port VLAN bypass, it's necessary to disable the port VLAN filter,
in order to support function level VLAN filter control.

Fixes: 2ba306627f59 ("net: hns3: add support for modify VLAN filter state")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: add match_id to check mailbox response from PF to VF
Peng Li [Mon, 19 Jul 2021 09:13:06 +0000 (17:13 +0800)]
net: hns3: add match_id to check mailbox response from PF to VF

When VF need response from PF, VF will wait (1us - 1s) to receive
the response, or it will wait timeout and the VF action fails.
If VF do not receive response in 1st action because timeout,
the 2nd action may receive response for the 1st action, and get
incorrect response data.VF must reciveve the right response from
PF,or it will cause unexpected error.

This patch adds match_id to check mailbox response from PF to VF,
to make sure VF get the right response:
1. The message sent from VF was labelled with match_id which was a
unique 16-bit non-zero value.
2. The response sent from PF will label with match_id which got from
the request.
3. The VF uses the match_id to match request and response message.

This scheme depends on PF driver supports match_id, if PF driver doesn't
support then VF will uses the original scheme.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: fix possible mismatches resp of mailbox
Chengwen Feng [Mon, 19 Jul 2021 09:13:05 +0000 (17:13 +0800)]
net: hns3: fix possible mismatches resp of mailbox

Currently, the mailbox synchronous communication between VF and PF use
the following fields to maintain communication:
1. Origin_mbx_msg which was combined by message code and subcode, used
to match request and response.
2. Received_resp which means whether received response.

There may possible mismatches of the following situation:
1. VF sends message A with code=1 subcode=1.
2. PF was blocked about 500ms when processing the message A.
3. VF will detect message A timeout because it can't get the response
within 500ms.
4. VF sends message B with code=1 subcode=1 which equal message A.
5. PF processes the first message A and send the response message to
VF.
6. VF will identify the response matched the message B because the
code/subcode is the same. This will lead to mismatch of request and
response.

To fix the above bug, we use the following scheme:
1. The message sent from VF was labelled with match_id which was a
unique 16-bit non-zero value.
2. The response sent from PF will label with match_id which got from
the request.
3. The VF uses the match_id to match request and response message.

As for PF driver, it only needs to copy the match_id from request to
response.

Fixes: dde1a86e93ca ("net: hns3: Add mailbox support to PF driver")
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: bridge: do not replay fdb entries pointing towards the bridge twice
Vladimir Oltean [Mon, 19 Jul 2021 09:39:16 +0000 (12:39 +0300)]
net: bridge: do not replay fdb entries pointing towards the bridge twice

This simple script:

ip link add br0 type bridge
ip link set swp2 master br0
ip link set br0 address 00:01:02:03:04:05
ip link del br0

produces this result on a DSA switch:

[  421.306399] br0: port 1(swp2) entered blocking state
[  421.311445] br0: port 1(swp2) entered disabled state
[  421.472553] device swp2 entered promiscuous mode
[  421.488986] device swp2 left promiscuous mode
[  421.493508] br0: port 1(swp2) entered disabled state
[  421.886107] sja1105 spi0.1: port 1 failed to delete 00:01:02:03:04:05 vid 1 from fdb: -ENOENT
[  421.894374] sja1105 spi0.1: port 1 failed to delete 00:01:02:03:04:05 vid 0 from fdb: -ENOENT
[  421.943982] br0: port 1(swp2) entered blocking state
[  421.949030] br0: port 1(swp2) entered disabled state
[  422.112504] device swp2 entered promiscuous mode

A very simplified view of what happens is:

(1) the bridge port is created, and the bridge device inherits its MAC
    address

(2) when joining, the bridge port (DSA) requests a replay of the
    addition of all FDB entries towards this bridge port and towards the
    bridge device itself. In fact, DSA calls br_fdb_replay() twice:

br_fdb_replay(br, brport_dev);
br_fdb_replay(br, br);

    DSA uses reference counting for the FDB entries. So the MAC address
    of the bridge is simply kept with refcount 2. When the bridge port
    leaves under normal circumstances, everything cancels out since the
    replay of the FDB entry deletion is also done twice per VLAN.

(3) when the bridge MAC address changes, switchdev is notified of the
    deletion of the old address and of the insertion of the new one.
    But the old address does not really go away, since it had refcount
    2, and the new address is added "only" with refcount 1.

(4) when the bridge port leaves now, it will replay a deletion of the
    FDB entries pointing towards the bridge twice. Then DSA will
    complain that it can't delete something that no longer exists.

It is clear that the problem is that the FDB entries towards the bridge
are replayed too many times, so let's fix that problem.

Fixes: 63c51453c82c ("net: dsa: replay the local bridge FDB entries pointing to the bridge dev too")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20210719093916.4099032-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: Update MAINTAINERS for MediaTek switch driver
Landen Chao [Tue, 20 Jul 2021 03:50:07 +0000 (11:50 +0800)]
net: Update MAINTAINERS for MediaTek switch driver

Update maintainers for MediaTek switch driver with Deng Qingfang who has
contributed many high-quality patches (interrupt, VLAN, GPIO, and etc.)
and will help maintenance.

Signed-off-by: Landen Chao <landen.chao@mediatek.com>
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/49e1aa8aac58dcbf1b5e036d09b3fa3bbb1d94d0.1626751861.git.landen.chao@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet/tcp_fastopen: remove obsolete extern
Eric Dumazet [Mon, 19 Jul 2021 09:20:28 +0000 (02:20 -0700)]
net/tcp_fastopen: remove obsolete extern

After cited commit, sysctl_tcp_fastopen_blackhole_timeout is no longer
a global variable.

Fixes: 3733be14a32b ("ipv4: Namespaceify tcp_fastopen_blackhole_timeout knob")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Wei Wang <weiwan@google.com>
Link: https://lore.kernel.org/r/20210719092028.3016745-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoipv6: ip6_finish_output2: set sk into newly allocated nskb
Vasily Averin [Mon, 19 Jul 2021 07:55:14 +0000 (10:55 +0300)]
ipv6: ip6_finish_output2: set sk into newly allocated nskb

skb_set_owner_w() should set sk not to old skb but to new nskb.

Fixes: 5796015fa968 ("ipv6: allocate enough headroom in ip6_finish_output2()")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Link: https://lore.kernel.org/r/70c0744f-89ae-1869-7e3e-4fa292158f4b@virtuozzo.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoALSA: pcm: Fix mmap without buffer preallocation
Takashi Iwai [Tue, 20 Jul 2021 09:27:32 +0000 (11:27 +0200)]
ALSA: pcm: Fix mmap without buffer preallocation

The recent rewrite of the memory allocation helpers also changed the
page extraction to a common helper, snd_sgbuf_get_page().  But this
assumes implicitly that the buffer was allocated via the standard
helper (usually via preallocation), and didn't consider the case of
the manual buffer handling.

This patch fixes it and also covers the manual buffer management.

Fixes: 37af81c5998f ("ALSA: core: Abstract memory alloc helpers")
Link: https://lore.kernel.org/r/20210720092732.12412-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
3 years agoALSA: pcm: Fix mmap capability check
Takashi Iwai [Tue, 20 Jul 2021 09:26:40 +0000 (11:26 +0200)]
ALSA: pcm: Fix mmap capability check

The hw_support_mmap() doesn't cover all memory allocation types and
might use a wrong device pointer for checking the capability.
Check the all memory allocation types more completely.

Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210720092640.12338-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
3 years agoUSB: serial: cp210x: fix comments for GE CS1000
Ian Ray [Mon, 19 Jul 2021 16:43:49 +0000 (18:43 +0200)]
USB: serial: cp210x: fix comments for GE CS1000

Fix comments for GE CS1000 CP210x USB ID assignments.

Fixes: 42213a0190b5 ("USB: serial: cp210x: add some more GE USB IDs")
Signed-off-by: Ian Ray <ian.ray@ge.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
3 years agoALSA: hda: intel-dsp-cfg: add missing ElkhartLake PCI ID
Pierre-Louis Bossart [Mon, 19 Jul 2021 23:17:46 +0000 (18:17 -0500)]
ALSA: hda: intel-dsp-cfg: add missing ElkhartLake PCI ID

We missed the fact that ElkhartLake platforms have two different PCI
IDs. We only added one so the SOF driver is never selected by the
autodetection logic for the missing configuration.

BugLink: https://github.com/thesofproject/linux/issues/2990
Fixes: cc8f81c7e625 ('ALSA: hda: fix intel DSP config')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210719231746.557325-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
3 years agomedia: ngene: Fix out-of-bounds bug in ngene_command_config_free_buf()
Gustavo A. R. Silva [Mon, 19 Apr 2021 23:43:32 +0000 (18:43 -0500)]
media: ngene: Fix out-of-bounds bug in ngene_command_config_free_buf()

Fix an 11-year old bug in ngene_command_config_free_buf() while
addressing the following warnings caught with -Warray-bounds:

arch/alpha/include/asm/string.h:22:16: warning: '__builtin_memcpy' offset [12, 16] from the object at 'com' is out of the bounds of referenced subobject 'config' with type 'unsigned char' at offset 10 [-Warray-bounds]
arch/x86/include/asm/string_32.h:182:25: warning: '__builtin_memcpy' offset [12, 16] from the object at 'com' is out of the bounds of referenced subobject 'config' with type 'unsigned char' at offset 10 [-Warray-bounds]

The problem is that the original code is trying to copy 6 bytes of
data into a one-byte size member _config_ of the wrong structue
FW_CONFIGURE_BUFFERS, in a single call to memcpy(). This causes a
legitimate compiler warning because memcpy() overruns the length
of &com.cmd.ConfigureBuffers.config. It seems that the right
structure is FW_CONFIGURE_FREE_BUFFERS, instead, because it contains
6 more members apart from the header _hdr_. Also, the name of
the function ngene_command_config_free_buf() suggests that the actual
intention is to ConfigureFreeBuffers, instead of ConfigureBuffers
(which takes place in the function ngene_command_config_buf(), above).

Fix this by enclosing those 6 members of struct FW_CONFIGURE_FREE_BUFFERS
into new struct config, and use &com.cmd.ConfigureFreeBuffers.config as
the destination address, instead of &com.cmd.ConfigureBuffers.config,
when calling memcpy().

This also helps with the ongoing efforts to globally enable
-Warray-bounds and get us closer to being able to tighten the
FORTIFY_SOURCE routines on memcpy().

Link: https://github.com/KSPP/linux/issues/109
Fixes: dae52d009fc9 ("V4L/DVB: ngene: Initial check-in")
Cc: stable@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/linux-hardening/20210420001631.GA45456@embeddedor/
3 years agoseq_file: disallow extremely large seq buffer allocations
Eric Sandeen [Tue, 13 Jul 2021 15:49:23 +0000 (17:49 +0200)]
seq_file: disallow extremely large seq buffer allocations

There is no reasonable need for a buffer larger than this, and it avoids
int overflow pitfalls.

Fixes: 058504edd026 ("fs/seq_file: fallback to vmalloc allocation")
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Qualys Security Advisory <qsa@qualys.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agopowerpc/pasemi: Fix fall-through warning for Clang
Gustavo A. R. Silva [Thu, 15 Jul 2021 05:10:26 +0000 (00:10 -0500)]
powerpc/pasemi: Fix fall-through warning for Clang

Fix the following fallthrough warning:

arch/powerpc/platforms/pasemi/idle.c:45:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/60efbf18.d9n6eXv275OJcc7T%25lkp@intel.com/
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
3 years agoocteontx2-af: Introduce internal packet switching
Subbaraya Sundeep [Mon, 19 Jul 2021 08:59:34 +0000 (14:29 +0530)]
octeontx2-af: Introduce internal packet switching

As of now any communication between CGXs PFs and
their VFs within the system is possible only by
external switches sending packets back to the
system. This patch adds internal switching support.
Broadcast packet replication is not covered here.
RVU admin function (AF) maintains MAC addresses
of all interfaces in the system. When switching is
enabled, MCAM entries are allocated to install rules
such that packets with DMAC matching any of the
internal interface MAC addresses is punted back
into the system via the loopback channel.
On the receive side the default unicast rules
are modified to not check for ingress channel.
So any packet with matching DMAC irrespective of
which interface it is coming from will be forwarded
to the respective PF/VF interface.
The transmit side rules and default unicast rules
are updated if user changes MAC address of an interface.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: Prepare for allocating MCAM rules for AF
Subbaraya Sundeep [Mon, 19 Jul 2021 08:59:33 +0000 (14:29 +0530)]
octeontx2-af: Prepare for allocating MCAM rules for AF

AF till now only manages the allocation and freeing of
MCAM rules for other PF/VFs in system. To implement
L2 switching between all CGX mapped PF and VFs, AF
requires MCAM entries for DMAC rules for each PF and VF.
This patch modifies AF driver such that AF can also
allocate MCAM rules and install rules for other
PFs and VFs. All the checks like channel verification
for RX rules and PF_FUNC verification for TX rules are
relaxed in case AF is allocating or installing rules.
Also all the entry and counter to owner mappings are
set to NPC_MCAM_INVALID_MAP when they are free indicating
those are not allocated to AF nor PF/VFs.
This patch also ensures that AF allocated and installed
entries are displayed in debugfs.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoocteontx2-af: Enable transmit side LBK link
Subbaraya Sundeep [Mon, 19 Jul 2021 08:59:32 +0000 (14:29 +0530)]
octeontx2-af: Enable transmit side LBK link

For enabling VF-VF switching the packets egressing
out of CGX mapped VFs needed to be sent to LBK
so that same packets are received back to the system.
But the LBK link also needs to be enabled in addition
to a VF's mapped CGX_LMAC link otherwise hardware
raises send error interrupt indicating selected LBK
link is not enabled in NIX_AF_TL3_TL2X_LINKX_CFG register.
Hence this patch enables all LBK links in
TL3_TL2_LINKX_CFG registers.
Also to enable packet flow between PFs/VFs of NIX0
to PFs/VFs of NIX1(in 98xx silicon) the NPC TX DMAC
rules has to be installed such that rules must be hit
for any TX interface i.e., NIX0-TX or NIX1-TX provided
DMAC match creteria is met. Hence this patch changes the
behavior such that MCAM is programmed to match with any
NIX0/1-TX interface for TX rules.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet/tcp_fastopen: fix data races around tfo_active_disable_stamp
Eric Dumazet [Mon, 19 Jul 2021 09:12:18 +0000 (02:12 -0700)]
net/tcp_fastopen: fix data races around tfo_active_disable_stamp

tfo_active_disable_stamp is read and written locklessly.
We need to annotate these accesses appropriately.

Then, we need to perform the atomic_inc(tfo_active_disable_times)
after the timestamp has been updated, and thus add barriers
to make sure tcp_fastopen_active_should_disable() wont read
a stale timestamp.

Fixes: cf1ef3f0719b ("net/tcp_fastopen: Disable active side TFO in certain scenarios")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Wei Wang <weiwan@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Wei Wang <weiwan@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'dt-bindinga-dwmac'
David S. Miller [Mon, 19 Jul 2021 17:08:06 +0000 (10:08 -0700)]
Merge branch 'dt-bindinga-dwmac'

Joakim Zhang says:

====================
dt-bindings: net: dwmac-imx: convert

This patch set intends to convert imx dwmac binding to schema, and fixes
found by dt_binding_check and dtbs_check.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoarm64: dts: imx8mp: change interrupt order per dt-binding
Joakim Zhang [Mon, 19 Jul 2021 07:18:21 +0000 (15:18 +0800)]
arm64: dts: imx8mp: change interrupt order per dt-binding

This patch changs interrupt order which found by dtbs_check.

$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
arch/arm64/boot/dts/freescale/imx8mp-evk.dt.yaml: ethernet@30bf0000: interrupt-names:0: 'macirq' was expected
arch/arm64/boot/dts/freescale/imx8mp-evk.dt.yaml: ethernet@30bf0000: interrupt-names:1: 'eth_wake_irq' was expected

According to Documentation/devicetree/bindings/net/snps,dwmac.yaml, we
should list interrupt in it's order.

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodt-bindings: net: imx-dwmac: convert imx-dwmac bindings to yaml
Joakim Zhang [Mon, 19 Jul 2021 07:18:20 +0000 (15:18 +0800)]
dt-bindings: net: imx-dwmac: convert imx-dwmac bindings to yaml

In order to automate the verification of DT nodes covert imx-dwmac to
nxp,dwmac-imx.yaml, and pass below checking.

$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodt-bindings: net: snps,dwmac: add missing DWMAC IP version
Joakim Zhang [Mon, 19 Jul 2021 07:18:19 +0000 (15:18 +0800)]
dt-bindings: net: snps,dwmac: add missing DWMAC IP version

Add missing DWMAC IP version in snps,dwmac.yaml which found by below
command, as NXP i.MX8 families support SNPS DWMAC 5.10a IP.

$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
Documentation/devicetree/bindings/net/nxp,dwmac-imx.example.dt.yaml:
ethernet@30bf0000: compatible: None of ['nxp,imx8mp-dwmac-eqos', 'snps,dwmac-5.10a'] are valid under the given schema

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hisilicon: rename CACHE_LINE_MASK to avoid redefinition
Randy Dunlap [Sun, 18 Jul 2021 20:38:34 +0000 (13:38 -0700)]
net: hisilicon: rename CACHE_LINE_MASK to avoid redefinition

Building on ARCH=arc causes a "redefined" warning, so rename this
driver's CACHE_LINE_MASK to avoid the warning.

../drivers/net/ethernet/hisilicon/hip04_eth.c:134: warning: "CACHE_LINE_MASK" redefined
  134 | #define CACHE_LINE_MASK   0x3F
In file included from ../include/linux/cache.h:6,
                 from ../include/linux/printk.h:9,
                 from ../include/linux/kernel.h:19,
                 from ../include/linux/list.h:9,
                 from ../include/linux/module.h:12,
                 from ../drivers/net/ethernet/hisilicon/hip04_eth.c:7:
../arch/arc/include/asm/cache.h:17: note: this is the location of the previous definition
   17 | #define CACHE_LINE_MASK  (~(L1_CACHE_BYTES - 1))

Fixes: d413779cdd93 ("net: hisilicon: Add an tx_desc to adapt HI13X1_GMAC")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'bnxt_en-fixes'
David S. Miller [Mon, 19 Jul 2021 15:50:35 +0000 (08:50 -0700)]
Merge branch 'bnxt_en-fixes'

Michael Chan says:

====================
bnxt_en: Bug fixes

Most of the fixes in this series have to do with error recovery.  They
include error path handling when the error recovery has to abort, and
the rediscovery of capabilities (PTP and RoCE) after firmware reset
that may result in capability changes.

Two other fixes are to reject invalid ETS settings and to validate
VLAN protocol in the RX path.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Fix PTP capability discovery
Michael Chan [Sun, 18 Jul 2021 19:36:33 +0000 (15:36 -0400)]
bnxt_en: Fix PTP capability discovery

The current PTP initialization logic does not account for firmware
reset that may cause PTP capability to change.  The valid pointer
bp->ptp_cfg is used to indicate that the device is capable of PTP
and that it has been initialized.  So we must clean up bp->ptp_cfg
and free it if the firmware after reset does not support PTP.

Fixes: 93cb62d98e9c ("bnxt_en: Enable hardware PTP support")
Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Move bnxt_ptp_init() to bnxt_open()
Michael Chan [Sun, 18 Jul 2021 19:36:32 +0000 (15:36 -0400)]
bnxt_en: Move bnxt_ptp_init() to bnxt_open()

The device needs to be in ifup state for PTP to function, so move
bnxt_ptp_init() to bnxt_open().  This means that the PHC will be
registered during bnxt_open().

This also makes firmware reset work correctly.  PTP configurations
may change after firmware upgrade or downgrade.  bnxt_open() will
be called after firmware reset, so it will work properly.

bnxt_ptp_start() is now incorporated into bnxt_ptp_init().  We now
also need to call bnxt_ptp_clear() in bnxt_close().

Fixes: 93cb62d98e9c ("bnxt_en: Enable hardware PTP support")
Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Check abort error state in bnxt_half_open_nic()
Somnath Kotur [Sun, 18 Jul 2021 19:36:31 +0000 (15:36 -0400)]
bnxt_en: Check abort error state in bnxt_half_open_nic()

bnxt_half_open_nic() is called during during ethtool self test and is
protected by rtnl_lock.  Firmware reset can be happening at the same
time.  Only critical portions of the entire firmware reset sequence
are protected by the rtnl_lock.  It is possible that bnxt_half_open_nic()
can be called when the firmware reset sequence is aborting.  In that
case, bnxt_half_open_nic() needs to check if the ABORT_ERR flag is set
and abort if it is.  The ethtool self test will fail but the NIC will be
brought to a consistent IF_DOWN state.

Without this patch, if bnxt_half_open_nic() were to continue in this
error state, it may crash like this:

  bnxt_en 0000:82:00.1 enp130s0f1np1: FW reset in progress during close, FW reset will be aborted
  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
  ...
  Process ethtool (pid: 333327, stack limit = 0x0000000046476577)
  Call trace:
  bnxt_alloc_mem+0x444/0xef0 [bnxt_en]
  bnxt_half_open_nic+0x24/0xb8 [bnxt_en]
  bnxt_self_test+0x2dc/0x390 [bnxt_en]
  ethtool_self_test+0xe0/0x1f8
  dev_ethtool+0x1744/0x22d0
  dev_ioctl+0x190/0x3e0
  sock_ioctl+0x238/0x480
  do_vfs_ioctl+0xc4/0x758
  ksys_ioctl+0x84/0xb8
  __arm64_sys_ioctl+0x28/0x38
  el0_svc_handler+0xb0/0x180
  el0_svc+0x8/0xc

Fixes: a1301f08c5ac ("bnxt_en: Check abort error state in bnxt_open_nic().")
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Validate vlan protocol ID on RX packets
Michael Chan [Sun, 18 Jul 2021 19:36:30 +0000 (15:36 -0400)]
bnxt_en: Validate vlan protocol ID on RX packets

Only pass supported VLAN protocol IDs for stripped VLAN tags to the
stack.  The stack will hit WARN() if the protocol ID is unsupported.

Existing firmware sets up the chip to strip 0x8100, 0x88a8, 0x9100.
Only the 1st two protocols are supported by the kernel.

Fixes: a196e96bb68f ("bnxt_en: clean up VLAN feature bit handling")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: fix error path of FW reset
Somnath Kotur [Sun, 18 Jul 2021 19:36:29 +0000 (15:36 -0400)]
bnxt_en: fix error path of FW reset

When bnxt_open() fails in the firmware reset path, the driver needs to
gracefully abort, but it is executing code that should be invoked only
in the success path.  Define a function to abort FW reset and
consolidate all error paths to call this new function.

Fixes: dab62e7c2de7 ("bnxt_en: Implement faster recovery for firmware fatal error.")
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Add missing check for BNXT_STATE_ABORT_ERR in bnxt_fw_rset_task()
Michael Chan [Sun, 18 Jul 2021 19:36:28 +0000 (15:36 -0400)]
bnxt_en: Add missing check for BNXT_STATE_ABORT_ERR in bnxt_fw_rset_task()

In the BNXT_FW_RESET_STATE_POLL_VF state in bnxt_fw_reset_task() after all
VFs have unregistered, we need to check for BNXT_STATE_ABORT_ERR after
we acquire the rtnl_lock.  If the flag is set, we need to abort.

Fixes: 230d1f0de754 ("bnxt_en: Handle firmware reset.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: Refresh RoCE capabilities in bnxt_ulp_probe()
Michael Chan [Sun, 18 Jul 2021 19:36:27 +0000 (15:36 -0400)]
bnxt_en: Refresh RoCE capabilities in bnxt_ulp_probe()

The capabilities can change after firmware upgrade/downgrade, so we
should get the up-to-date RoCE capabilities everytime bnxt_ulp_probe()
is called.

Fixes: 2151fe0830fd ("bnxt_en: Handle RESET_NOTIFY async event from firmware.")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: reject ETS settings that will starve a TC
Edwin Peer [Sun, 18 Jul 2021 19:36:26 +0000 (15:36 -0400)]
bnxt_en: reject ETS settings that will starve a TC

ETS proportions are presented to HWRM_QUEUE_COS2BW_CFG as minimum
bandwidth constraints. Thus, zero is a legal value for a given TC.
However, if all the other TCs sum up to 100%, then at least one
hardware queue will starve, resulting in guaranteed TX timeouts.
Reject such nonsensical configurations.

Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobnxt_en: don't disable an already disabled PCI device
Kalesh AP [Sun, 18 Jul 2021 19:36:25 +0000 (15:36 -0400)]
bnxt_en: don't disable an already disabled PCI device

If device is already disabled in reset path and PCI io error is
detected before the device could be enabled, driver could
call pci_disable_device() for already disabled device. Fix this
problem by calling pci_disable_device() only if the device is already
enabled.

Fixes: 6316ea6db93d ("bnxt_en: Enable AER support.")
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoACPI: utils: Fix reference counting in for_each_acpi_dev_match()
Andy Shevchenko [Mon, 12 Jul 2021 18:21:21 +0000 (21:21 +0300)]
ACPI: utils: Fix reference counting in for_each_acpi_dev_match()

Currently it's possible to iterate over the dangling pointer in case the device
suddenly disappears. This may happen becase callers put it at the end of a loop.

Instead, let's move that call inside acpi_dev_get_next_match_dev().

Fixes: 803abec64ef9 ("media: ipu3-cio2: Add cio2-bridge to ipu3-cio2 driver")
Fixes: bf263f64e804 ("media: ACPI / bus: Add acpi_dev_get_next_match_dev() and helper macro")
Fixes: edbd1bc4951e ("efi/dev-path-parser: Switch to use for_each_acpi_dev_match()")
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Daniel Scally <djrscally@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>