platform/kernel/linux-rpi.git
3 years agoMerge branch 'dynamic_sg' into rdma.git for-next
Jason Gunthorpe [Fri, 9 Oct 2020 15:56:02 +0000 (12:56 -0300)]
Merge branch 'dynamic_sg' into rdma.git for-next

From Maor Gottlieb says:

====================
This series extends __sg_alloc_table_from_pages to allow chaining of new
pages to an already initialized SG table.

This allows for drivers to utilize the optimization of merging contiguous
pages without a need to pre allocate all the pages and hold them in a very
large temporary buffer prior to the call to SG table initialization.

The last patch changes the Infiniband core to use the new API. It removes
duplicate functionality from the code and benefits from the optimization
of allocating dynamic SG table from pages.

In huge pages system of 2MB page size, without this change, the SG table
would contain x512 SG entries.
====================

* branch 'dynamic_sg':
  RDMA/umem: Move to allocate SG table from pages
  lib/scatterlist: Add support in dynamic allocation of SG table from pages
  tools/testing/scatterlist: Show errors in human readable form
  tools/testing/scatterlist: Rejuvenate bit-rotten test

3 years agoIB/mlx4: Convert rej_tmout radix-tree to XArray
Håkon Bugge [Fri, 9 Oct 2020 14:24:42 +0000 (16:24 +0200)]
IB/mlx4: Convert rej_tmout radix-tree to XArray

Was missed during the initial review of the below patch

Fixes: 227a0e142e37 ("IB/mlx4: Add support for REJ due to timeout")
Link: https://lore.kernel.org/r/1602253482-6718-1-git-send-email-haakon.bugge@oracle.com
Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/rxe: Fix bug rejecting all multicast packets
Bob Pearson [Thu, 8 Oct 2020 21:27:53 +0000 (16:27 -0500)]
RDMA/rxe: Fix bug rejecting all multicast packets

Fix a bug in rxe_rcv() that causes all multicast packets to be
dropped. Currently rxe_match_dgid() is called for each packet to verify
that the destination IP address matches one of the entries in the port
source GID table. This is incorrect for IP multicast addresses since they
do not appear in the GID table.

Add code to detect multicast addresses.

Change function name to rxe_chk_dgid() which is clearer.

Link: https://lore.kernel.org/r/20201008212753.265249-1-rpearson@hpe.com
Signed-off-by: Bob Pearson <rpearson@hpe.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/rxe: Fix skb lifetime in rxe_rcv_mcast_pkt()
Bob Pearson [Thu, 8 Oct 2020 20:36:52 +0000 (15:36 -0500)]
RDMA/rxe: Fix skb lifetime in rxe_rcv_mcast_pkt()

The changes referenced below replaced sbk_clone)_ by taking additional
references, passing the skb along and then freeing the skb. This
deleted the packets before they could be processed and additionally
passed bad data in each packet. Since pkt is stored in skb->cb
changing pkt->qp changed it for all the packets.

Replace skb_get() by sbk_clone() in rxe_rcv_mcast_pkt() for cases where
multiple QPs are receiving multicast packets on the same address.

Delete kfree_skb() because the packets need to live until they have been
processed by each QP. They are freed later.

Fixes: 86af61764151 ("IB/rxe: remove unnecessary skb_clone")
Fixes: fe896ceb5772 ("IB/rxe: replace refcount_inc with skb_get")
Link: https://lore.kernel.org/r/20201008203651.256958-1-rpearson@hpe.com
Signed-off-by: Bob Pearson <rpearson@hpe.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/rxe: Remove duplicate entries in struct rxe_mr
Bob Pearson [Thu, 8 Oct 2020 21:28:18 +0000 (16:28 -0500)]
RDMA/rxe: Remove duplicate entries in struct rxe_mr

Struct rxe_mem had pd, lkey and rkey values both in itself and in the
struct ib_mr which is also included in rxe_mem.

Delete these entries and replace references with the ones in ibmr.Add
mr_pd, mr_lkey and mr_rkey macros which extract these values from mr.

Link: https://lore.kernel.org/r/20201008212818.265303-1-rpearson@hpe.com
Signed-off-by: Bob Pearson <rpearson@hpe.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoIB/hfi,rdmavt,qib,opa_vnic: Update MAINTAINERS
Dennis Dalessandro [Thu, 8 Oct 2020 17:18:03 +0000 (13:18 -0400)]
IB/hfi,rdmavt,qib,opa_vnic: Update MAINTAINERS

Intel has spun off the Omni-Path Architecture group which is now a new
company known as Cornelis Networks. Updating the MAINTAINERS file to
reflect this change and our new email addresses.

Link: https://lore.kernel.org/r/20201008171803.189100.43448.stgit@awfm-01.aw.intel.com
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoIB/rdmavt: Fix sizeof mismatch
Colin Ian King [Thu, 8 Oct 2020 09:52:04 +0000 (10:52 +0100)]
IB/rdmavt: Fix sizeof mismatch

An incorrect sizeof is being used, struct rvt_ibport ** is not correct, it
should be struct rvt_ibport *. Note that since ** is the same size as
* this is not causing any issues.  Improve this fix by using
sizeof(*rdi->ports) as this allows us to not even reference the type
of the pointer.  Also remove line breaks as the entire statement can
fit on one line.

Link: https://lore.kernel.org/r/20201008095204.82683-1-colin.king@canonical.com
Addresses-Coverity: ("Sizeof not portable (SIZEOF_MISMATCH)")
Fixes: ff6acd69518e ("IB/rdmavt: Add device structure allocation")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoMAINTAINERS: CISCO VIC LOW LATENCY NIC DRIVER
Joe Perches [Thu, 8 Oct 2020 02:46:54 +0000 (19:46 -0700)]
MAINTAINERS: CISCO VIC LOW LATENCY NIC DRIVER

Parvi Kaustubhi's email bounces.

Link: https://lore.kernel.org/r/f7726a1873f14972f137f64a4d6cd35e530c6c95.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Christian Benvenuti <benve@cisco.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/bnxt_re: Fix sizeof mismatch for allocation of pbl_tbl.
Colin Ian King [Tue, 6 Oct 2020 11:47:00 +0000 (12:47 +0100)]
RDMA/bnxt_re: Fix sizeof mismatch for allocation of pbl_tbl.

An incorrect sizeof is being used, u64 * is not correct, it should be just
u64 for a table of umem_pgs number of u64 items in the pbl_tbl.  Use the
idiom sizeof(*pbl_tbl) to get the object type without the need to
explicitly use u64.

Link: https://lore.kernel.org/r/20201006114700.537916-1-colin.king@canonical.com
Addresses-Coverity: ("Sizeof not portable (SIZEOF_MISMATCH)")
Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/bnxt_re: Use rdma_umem_for_each_dma_block()
Jason Gunthorpe [Wed, 30 Sep 2020 00:24:35 +0000 (21:24 -0300)]
RDMA/bnxt_re: Use rdma_umem_for_each_dma_block()

This driver is taking the SGL out of the umem and passing it through a
struct bnxt_qplib_sg_info. Instead of passing the SGL pass the umem and
then use rdma_umem_for_each_dma_block() directly.

Move the calls of ib_umem_num_dma_blocks() closer to their actual point of
use, npages is only set for non-umem pbl flows.

Link: https://lore.kernel.org/r/0-v1-b37437a73f35+49c-bnxt_re_dma_block_jgg@nvidia.com
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Tested-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/umem: Move to allocate SG table from pages
Maor Gottlieb [Sun, 4 Oct 2020 15:43:40 +0000 (18:43 +0300)]
RDMA/umem: Move to allocate SG table from pages

Remove the implementation of ib_umem_add_sg_table and instead
call to __sg_alloc_table_from_pages which already has the logic to
merge contiguous pages.

Besides that it removes duplicated functionality, it reduces the
memory consumption of the SG table significantly. Prior to this
patch, the SG table was allocated in advance regardless consideration
of contiguous pages.

In huge pages system of 2MB page size, without this change, the SG table
would contain x512 SG entries.
E.g. for 100GB memory registration:

 Number of entries Size
Before        26214400          600.0MB
After            51200   1.2MB

Link: https://lore.kernel.org/r/20201004154340.1080481-5-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agolib/scatterlist: Add support in dynamic allocation of SG table from pages
Maor Gottlieb [Sun, 4 Oct 2020 15:43:37 +0000 (18:43 +0300)]
lib/scatterlist: Add support in dynamic allocation of SG table from pages

Extend __sg_alloc_table_from_pages to support dynamic allocation of
SG table from pages. It should be used by drivers that can't supply
all the pages at one time.

This function returns the last populated SGE in the table. Users should
pass it as an argument to the function from the second call and forward.
As before, nents will be equal to the number of populated SGEs (chunks).

With this new extension, drivers can benefit the optimization of merging
contiguous pages without a need to allocate all pages in advance and
hold them in a large buffer.

E.g. with the Infiniband driver that allocates a single page for hold the
pages. For 1TB memory registration, the temporary buffer would consume only
4KB, instead of 2GB.

Link: https://lore.kernel.org/r/20201004154340.1080481-2-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agotools/testing/scatterlist: Show errors in human readable form
Tvrtko Ursulin [Sun, 4 Oct 2020 15:43:39 +0000 (18:43 +0300)]
tools/testing/scatterlist: Show errors in human readable form

Instead of just asserting dump some more useful info about what the test
saw versus what it expected to see.

Link: https://lore.kernel.org/r/20201004154340.1080481-4-leon@kernel.org
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agotools/testing/scatterlist: Rejuvenate bit-rotten test
Tvrtko Ursulin [Sun, 4 Oct 2020 15:43:38 +0000 (18:43 +0300)]
tools/testing/scatterlist: Rejuvenate bit-rotten test

A couple small tweaks are needed to make the test build and run
on current kernels.

Link: https://lore.kernel.org/r/20201004154340.1080481-3-leon@kernel.org
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/ipoib: Set rtnl_link_ops for ipoib interfaces
Kamal Heib [Sun, 4 Oct 2020 13:29:48 +0000 (16:29 +0300)]
RDMA/ipoib: Set rtnl_link_ops for ipoib interfaces

Report the "ipoib pkey", "mode" and "umcast" netlink attributes for every
IPoiB interface type, not just children created with 'ip link add'.

After setting the rtnl_link_ops for the parent interface, implement the
dellink() callback to block users from trying to remove it.

Fixes: 862096a8bbf8 ("IB/ipoib: Add more rtnl_link_ops callbacks")
Link: https://lore.kernel.org/r/20201004132948.26669-1-kamalheib1@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoLinux 5.9-rc8
Linus Torvalds [Sun, 4 Oct 2020 23:04:34 +0000 (16:04 -0700)]
Linux 5.9-rc8

3 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 3 Oct 2020 19:19:23 +0000 (12:19 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "Two bugfixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: VMX: update PFEC_MASK/PFEC_MATCH together with PF intercept
  KVM: arm64: Restore missing ISB on nVHE __tlb_switch_to_guest

3 years agoMerge tag 'for-linus-5.9b-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 3 Oct 2020 18:57:39 +0000 (11:57 -0700)]
Merge tag 'for-linus-5.9b-rc8-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fix from Juergen Gross:
 "Fix a regression introduced in 5.9-rc3 which caused a system running
  as fully virtualized guest under Xen to crash when using legacy
  devices like a floppy"

* tag 'for-linus-5.9b-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/events: don't use chip_data for legacy IRQs

3 years agoMerge tag 'usb-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sat, 3 Oct 2020 18:47:35 +0000 (11:47 -0700)]
Merge tag 'usb-5.9-rc8' of git://git./linux/kernel/git/gregkh/usb

Pull USB/PHY fixes from Greg KH:
 "Here are some small USB and PHY driver fixes for 5.9-rc8

  The PHY driver fix resolves an issue found by Dan Carpenter for a
  memory leak.

  The USB fixes fall into two groups:

   - usb gadget fix from Bryan that is a fix for a previous security fix
     that showed up in in-the-wild testing

   - usb core driver matching bugfixes. This fixes a bug that has
     plagued the both the usbip driver and syzbot testing tools this -rc
     release cycle. All is now working properly so usbip connections
     will work, and syzbot can get back to fuzzing USB drivers properly.

  All have been in linux-next for a while with no reported issues"

* tag 'usb-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usbcore/driver: Accommodate usbip
  usbcore/driver: Fix incorrect downcast
  usbcore/driver: Fix specific driver selection
  Revert "usbip: Implement a match function to fix usbip"
  USB: gadget: f_ncm: Fix NDP16 datagram validation
  phy: ti: am654: Fix a leak in serdes_am654_probe()

3 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 3 Oct 2020 18:40:22 +0000 (11:40 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Some more driver fixes for i2c"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: npcm7xx: Clear LAST bit after a failed transaction.
  i2c: cpm: Fix i2c_ram structure
  i2c: i801: Exclude device from suspend direct complete optimization

3 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Sat, 3 Oct 2020 18:37:23 +0000 (11:37 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:
 "A couple more driver quirks, now enabling newer trackpoints from
  Synaptics for real"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - add nopnp quirk for Acer Aspire 5 A515
  Input: trackpoint - enable Synaptics trackpoints

3 years agoscripts/spelling.txt: fix malformed entry
Eric Biggers [Sat, 3 Oct 2020 05:21:48 +0000 (22:21 -0700)]
scripts/spelling.txt: fix malformed entry

One of the entries has three fields "mistake||correction||correction"
rather than the expected two fields "mistake||correction".  Fix it.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200930234359.255295-1-ebiggers@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm/page_alloc: handle a missing case for memalloc_nocma_{save/restore} APIs
Joonsoo Kim [Sat, 3 Oct 2020 05:21:45 +0000 (22:21 -0700)]
mm/page_alloc: handle a missing case for memalloc_nocma_{save/restore} APIs

memalloc_nocma_{save/restore} APIs can be used to skip page allocation
on CMA area, but, there is a missing case and the page on CMA area could
be allocated even if APIs are used.  This patch handles this case to fix
the potential issue.

For now, these APIs are used to prevent long-term pinning on the CMA
page.  When the long-term pinning is requested on the CMA page, it is
migrated to the non-CMA page before pinning.  This non-CMA page is
allocated by using memalloc_nocma_{save/restore} APIs.  If APIs doesn't
work as intended, the CMA page is allocated and it is pinned for a long
time.  This long-term pin for the CMA page causes cma_alloc() failure
and it could result in wrong behaviour on the device driver who uses the
cma_alloc().

Missing case is an allocation from the pcplist.  MIGRATE_MOVABLE pcplist
could have the pages on CMA area so we need to skip it if ALLOC_CMA
isn't specified.

Fixes: 8510e69c8efe (mm/page_alloc: fix memalloc_nocma_{save/restore} APIs)
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Link: https://lkml.kernel.org/r/1601429472-12599-1-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agomm, slub: restore initial kmem_cache flags
Eric Farman [Sat, 3 Oct 2020 05:21:41 +0000 (22:21 -0700)]
mm, slub: restore initial kmem_cache flags

The routine that applies debug flags to the kmem_cache slabs
inadvertantly prevents non-debug flags from being applied to those
same objects.  That is, if slub_debug=<flag>,<slab> is specified,
non-debugged slabs will end up having flags of zero, and the slabs
may be unusable.

Fix this by including the input flags for non-matching slabs with the
contents of slub_debug, so that the caches are created as expected
alongside any debugging options that may be requested.  With this, we
can remove the check for a NULL slub_debug_string, since it's covered
by the loop itself.

Fixes: e17f1dfba37b ("mm, slub: extend slub_debug syntax for multiple blocks")
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kees Cook <keescook@chromium.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Link: https://lkml.kernel.org/r/20200930161931.28575-1-farman@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'kvmarm-fixes-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmar...
Paolo Bonzini [Sat, 3 Oct 2020 09:07:59 +0000 (05:07 -0400)]
Merge tag 'kvmarm-fixes-5.9-3' of git://git./linux/kernel/git/kvmarm/kvmarm into kvm-master

KVM/arm64 fixes for 5.9, take #3

- Fix synchronization of VTTBR update on TLB invalidation for nVHE systems

3 years agoKVM: VMX: update PFEC_MASK/PFEC_MATCH together with PF intercept
Paolo Bonzini [Tue, 29 Sep 2020 12:31:32 +0000 (08:31 -0400)]
KVM: VMX: update PFEC_MASK/PFEC_MATCH together with PF intercept

The PFEC_MASK and PFEC_MATCH fields in the VMCS reverse the meaning of
the #PF intercept bit in the exception bitmap when they do not match.
This means that, if PFEC_MASK and/or PFEC_MATCH are set, the
hypervisor can get a vmexit for #PF exceptions even when the
corresponding bit is clear in the exception bitmap.

This is unexpected and is promptly detected by a WARN_ON_ONCE.
To fix it, reset PFEC_MASK and PFEC_MATCH when the #PF intercept
is disabled (as is common with enable_ept && !allow_smaller_maxphyaddr).

Reported-by: Qian Cai <cai@redhat.com>>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoMerge tag 'pinctrl-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Fri, 2 Oct 2020 21:51:34 +0000 (14:51 -0700)]
Merge tag 'pinctrl-v5.9-2' of git://git./linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "Some pin control fixes here. All of them are driver fixes, the Intel
  Cherryview being the most interesting one.

   - Fix a mux problem for I2C in the MVEBU driver.

   - Fix a really hairy inversion problem in the Intel Cherryview
     driver.

   - Fix the register for the sdc2_clk in the Qualcomm SM8250 driver.

   - Check the virtual GPIO boot failur in the Mediatek driver"

* tag 'pinctrl-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: mediatek: check mtk_is_virt_gpio input parameter
  pinctrl: qcom: sm8250: correct sdc2_clk
  pinctrl: cherryview: Preserve CHV_PADCTRL1_INVRXTX_TXDATA flag on GPIOs
  pinctrl: mvebu: Fix i2c sda definition for 98DX3236

3 years agoMerge tag 'pci-v5.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Linus Torvalds [Fri, 2 Oct 2020 21:48:25 +0000 (14:48 -0700)]
Merge tag 'pci-v5.9-fixes-2' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Fix rockchip regression in rockchip_pcie_valid_device() (Lorenzo
   Pieralisi)

 - Add Pali Rohár as aardvark PCI maintainer (Pali Rohár)

* tag 'pci-v5.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  MAINTAINERS: Add Pali Rohár as aardvark PCI maintainer
  PCI: rockchip: Fix bus checks in rockchip_pcie_valid_device()

3 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 2 Oct 2020 21:42:13 +0000 (14:42 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two patches in driver frameworks. The iscsi one corrects a bug induced
  by a BPF change to network locking and the other is a regression we
  introduced"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: iscsi: iscsi_tcp: Avoid holding spinlock while calling getpeername()
  scsi: target: Fix lun lookup for TARGET_SCF_LOOKUP_LUN_FROM_TAG case

3 years agoMerge tag 'io_uring-5.9-2020-10-02' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 2 Oct 2020 21:38:10 +0000 (14:38 -0700)]
Merge tag 'io_uring-5.9-2020-10-02' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:

 - fix for async buffered reads if read-ahead is fully disabled (Hao)

 - double poll match fix

 - ->show_fdinfo() potential ABBA deadlock complaint fix

* tag 'io_uring-5.9-2020-10-02' of git://git.kernel.dk/linux-block:
  io_uring: fix async buffered reads when readahead is disabled
  io_uring: fix potential ABBA deadlock in ->show_fdinfo()
  io_uring: always delete double poll wait entry on match

3 years agoMerge tag 'block-5.9-2020-10-02' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 2 Oct 2020 21:34:52 +0000 (14:34 -0700)]
Merge tag 'block-5.9-2020-10-02' of git://git.kernel.dk/linux-block

Pull block fix from Jens Axboe:
 "Single fix for a ->commit_rqs failure case"

* tag 'block-5.9-2020-10-02' of git://git.kernel.dk/linux-block:
  blk-mq: call commit_rqs while list empty but error happen

3 years agoMerge branch 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Fri, 2 Oct 2020 17:37:08 +0000 (10:37 -0700)]
Merge branch 'work.epoll' of git://git./linux/kernel/git/viro/vfs

Pull epoll fixes from Al Viro:
 "Several race fixes in epoll"

* 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ep_create_wakeup_source(): dentry name can change under you...
  epoll: EPOLL_CTL_ADD: close the race in decision to take fast path
  epoll: replace ->visited/visited_list with generation count
  epoll: do not insert into poll queues until all sanity checks are done

3 years agoMerge tag 'riscv-for-linus-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 2 Oct 2020 17:13:05 +0000 (10:13 -0700)]
Merge tag 'riscv-for-linus-5.9-rc8' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:
 "Two fixes for this week:

   - The addition of a symbol export for clint_time_val, which has been
     inlined into some timex functions and can be used by drivers.

   - A fix to avoid calling get_cycles() before the timers have been
     probed.

  These both only effect !MMU systems"

* tag 'riscv-for-linus-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  RISC-V: Check clint_time_val before use
  clocksource: clint: Export clint_time_val for modules

3 years agoMerge tag 'for-5.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
Linus Torvalds [Fri, 2 Oct 2020 17:09:40 +0000 (10:09 -0700)]
Merge tag 'for-5.9-rc7-tag' of git://git./linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "Two more fixes.

  One is for a lockdep warning/lockup (also caught by syzbot), that one
  has been seen in practice. Regarding the other syzbot reports
  mentioned last time, they don't seem to be urgent and reliably
  reproducible so they'll be fixed later.

  The second fix is for a potential corruption when device replace
  finishes and the in-memory state of trim is not copied to the new
  device"

* tag 'for-5.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix filesystem corruption after a device replace
  btrfs: move btrfs_rm_dev_replace_free_srcdev outside of all locks
  btrfs: move btrfs_scratch_superblocks into btrfs_dev_replace_finishing

3 years agoMerge tag 'pm-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 2 Oct 2020 17:05:56 +0000 (10:05 -0700)]
Merge tag 'pm-5.9-rc8' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix one more issue related to the recent RCU-lockdep changes, a
  typo in documentation and add a missing return statement to
  intel_pstate.

  Specifics:

   - Fix up RCU usage for cpuidle on the ARM imx6q platform (Ulf
     Hansson)

   - Fix typo in the PM documentation (Yoann Congal)

   - Add return statement that is missing after recent changes in the
     intel_pstate driver (Zhang Rui)"

* tag 'pm-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ARM: imx6q: Fixup RCU usage for cpuidle
  Documentation: PM: Fix a reStructuredText syntax error
  cpufreq: intel_pstate: Fix missing return statement

3 years agoMerge tag 'staging-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 2 Oct 2020 17:01:00 +0000 (10:01 -0700)]
Merge tag 'staging-5.9-rc8' of git://git./linux/kernel/git/gregkh/staging

Pull IIO fixes from Greg KH:
 "Here are two small IIO driver fixes for 5.9-rc8 that resolve some
  reported issues:

   - driver name fixed in one driver

   - device name typo fixed

  Both have been in linux-next for a while with no reported problems"

* tag 'staging-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: adc: qcom-spmi-adc5: fix driver name
  iio: adc: ad7124: Fix typo in device name

3 years agoMerge tag 'gpio-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux...
Linus Torvalds [Fri, 2 Oct 2020 16:51:42 +0000 (09:51 -0700)]
Merge tag 'gpio-v5.9-2' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Some late GPIO fixes for the v5.9 series:

   - Fix compiler warnings on the OMAP when PM is disabled

   - Clear the interrupt when setting edge sensitivity on the Spreadtrum
     driver.

   - Fix up spurious interrupts on the TC35894.

   - Support threaded interrupts on the Siox controller.

   - Fix resource leaks on the mockup driver.

   - Fix line event handling in syscall compatible mode for the
     character device.

   - Fix an unitialized variable in the PCA953A driver.

   - Fix access to all GPIO IRQs on the Aspeed AST2600.

   - Fix line direction on the AMD FCH driver.

   - Use the bitmap API instead of compiler intrinsics for bit
     manipulation in the PCA953x driver"

* tag 'gpio-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: pca953x: Correctly initialize registers 6 and 7 for PCA957x
  gpio: pca953x: Use bitmap API over implicit GCC extension
  gpio: amd-fch: correct logic of GPIO_LINE_DIRECTION
  gpio: aspeed: fix ast2600 bank properties
  gpio/aspeed-sgpio: don't enable all interrupts by default
  gpio/aspeed-sgpio: enable access to all 80 input & output sgpios
  gpio: pca953x: Fix uninitialized pending variable
  gpiolib: Fix line event handling in syscall compatible mode
  gpio: mockup: fix resource leak in error path
  gpio: siox: explicitly support only threaded irqs
  gpio: tc35894: fix up tc35894 interrupt configuration
  gpio: sprd: Clear interrupt when setting the type as edge
  gpio: omap: Fix warnings if PM is disabled

3 years agoMerge tag 'mmc-v5.9-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 2 Oct 2020 16:40:09 +0000 (09:40 -0700)]
Merge tag 'mmc-v5.9-rc4-3' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:

 - Fix deadlock when removing MEMSTICK host

 - Workaround broken CMDQ on Intel GLK based IRBIS models

* tag 'mmc-v5.9-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci: Workaround broken command queuing on Intel GLK based IRBIS models
  memstick: Skip allocating card when removing host

3 years agorandom32: Restore __latent_entropy attribute on net_rand_state
Thibaut Sautereau [Fri, 2 Oct 2020 15:16:11 +0000 (17:16 +0200)]
random32: Restore __latent_entropy attribute on net_rand_state

Commit f227e3ec3b5c ("random32: update the net random state on interrupt
and activity") broke compilation and was temporarily fixed by Linus in
83bdc7275e62 ("random32: remove net_rand_state from the latent entropy
gcc plugin") by entirely moving net_rand_state out of the things handled
by the latent_entropy GCC plugin.

From what I understand when reading the plugin code, using the
__latent_entropy attribute on a declaration was the wrong part and
simply keeping the __latent_entropy attribute on the variable definition
was the correct fix.

Fixes: 83bdc7275e62 ("random32: remove net_rand_state from the latent entropy gcc plugin")
Acked-by: Willy Tarreau <w@1wt.eu>
Cc: Emese Revfy <re.emese@gmail.com>
Signed-off-by: Thibaut Sautereau <thibaut.sautereau@ssi.gouv.fr>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge branch 'pm-cpufreq'
Rafael J. Wysocki [Fri, 2 Oct 2020 16:30:30 +0000 (18:30 +0200)]
Merge branch 'pm-cpufreq'

* pm-cpufreq:
  cpufreq: intel_pstate: Fix missing return statement

3 years agomm: memcg/slab: fix slab statistics in !SMP configuration
Roman Gushchin [Thu, 1 Oct 2020 20:07:49 +0000 (13:07 -0700)]
mm: memcg/slab: fix slab statistics in !SMP configuration

Since commit ea426c2a7de8 ("mm: memcg: prepare for byte-sized vmstat
items") the write side of slab counters accepts a value in bytes and
converts it to pages.  It happens in __mod_node_page_state().

However a non-SMP version of __mod_node_page_state() doesn't perform
this conversion.  It leads to incorrect (unrealistically high) slab
counters values.  Fix this by adding a similar conversion to the non-SMP
version of __mod_node_page_state().

Signed-off-by: Roman Gushchin <guro@fb.com>
Reported-and-tested-by: Bastian Bittorf <bb@npl.de>
Fixes: ea426c2a7de8 ("mm: memcg: prepare for byte-sized vmstat items")
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agopipe: remove pipe_wait() and fix wakeup race with splice
Linus Torvalds [Fri, 2 Oct 2020 02:14:36 +0000 (19:14 -0700)]
pipe: remove pipe_wait() and fix wakeup race with splice

The pipe splice code still used the old model of waiting for pipe IO by
using a non-specific "pipe_wait()" that waited for any pipe event to
happen, which depended on all pipe IO being entirely serialized by the
pipe lock.  So by checking the state you were waiting for, and then
adding yourself to the wait queue before dropping the lock, you were
guaranteed to see all the wakeups.

Strictly speaking, the actual wakeups were not done under the lock, but
the pipe_wait() model still worked, because since the waiter held the
lock when checking whether it should sleep, it would always see the
current state, and the wakeup was always done after updating the state.

However, commit 0ddad21d3e99 ("pipe: use exclusive waits when reading or
writing") split the single wait-queue into two, and in the process also
made the "wait for event" code wait for _two_ wait queues, and that then
showed a race with the wakers that were not serialized by the pipe lock.

It's only splice that used that "pipe_wait()" model, so the problem
wasn't obvious, but Josef Bacik reports:

 "I hit a hang with fstest btrfs/187, which does a btrfs send into
  /dev/null. This works by creating a pipe, the write side is given to
  the kernel to write into, and the read side is handed to a thread that
  splices into a file, in this case /dev/null.

  The box that was hung had the write side stuck here [pipe_write] and
  the read side stuck here [splice_from_pipe_next -> pipe_wait].

  [ more details about pipe_wait() scenario ]

  The problem is we're doing the prepare_to_wait, which sets our state
  each time, however we can be woken up either with reads or writes. In
  the case above we race with the WRITER waking us up, and re-set our
  state to INTERRUPTIBLE, and thus never break out of schedule"

Josef had a patch that avoided the issue in pipe_wait() by just making
it set the state only once, but the deeper problem is that pipe_wait()
depends on a level of synchonization by the pipe mutex that it really
shouldn't.  And the whole "wait for any pipe state change" model really
isn't very good to begin with.

So rather than trying to work around things in pipe_wait(), remove that
legacy model of "wait for arbitrary pipe event" entirely, and actually
create functions that wait for the pipe actually being readable or
writable, and can do so without depending on the pipe lock serializing
everything.

Fixes: 0ddad21d3e99 ("pipe: use exclusive waits when reading or writing")
Link: https://lore.kernel.org/linux-fsdevel/bfa88b5ad6f069b2b679316b9e495a970130416c.1601567868.git.josef@toxicpanda.com/
Reported-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-and-tested-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoRDMA/uverbs: Expose the new GID query API to user space
Avihai Horon [Wed, 23 Sep 2020 16:50:15 +0000 (19:50 +0300)]
RDMA/uverbs: Expose the new GID query API to user space

Expose the query GID table and entry API to user space by adding two new
methods and method handlers to the device object.

This API provides a faster way to query a GID table using single call and
will be used in libibverbs to improve current approach that requires
multiple calls to open, close and read multiple sysfs files for a single
GID table entry.

Link: https://lore.kernel.org/r/20200923165015.2491894-5-leon@kernel.org
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/core: Introduce new GID table query API
Avihai Horon [Wed, 23 Sep 2020 16:50:14 +0000 (19:50 +0300)]
RDMA/core: Introduce new GID table query API

Introduce rdma_query_gid_table which enables querying all the GID tables
of a given device and copying the attributes of all valid GID entries to a
provided buffer.

This API provides a faster way to query a GID table using single call and
will be used in libibverbs to improve current approach that requires
multiple calls to open, close and read multiple sysfs files for a single
GID table entry.

Link: https://lore.kernel.org/r/20200923165015.2491894-4-leon@kernel.org
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/core: Modify enum ib_gid_type and enum rdma_network_type
Avihai Horon [Wed, 23 Sep 2020 16:50:13 +0000 (19:50 +0300)]
RDMA/core: Modify enum ib_gid_type and enum rdma_network_type

Separate IB_GID_TYPE_IB and IB_GID_TYPE_ROCE to two different values, so
enum ib_gid_type will match the gid types of the new query GID table API
which will be introduced in the following patches.

This change in enum ib_gid_type requires to change also enum
rdma_network_type by separating RDMA_NETWORK_IB and RDMA_NETWORK_ROCE_V1
values.

Link: https://lore.kernel.org/r/20200923165015.2491894-3-leon@kernel.org
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/core: Change rdma_get_gid_attr returned error code
Avihai Horon [Wed, 23 Sep 2020 16:50:12 +0000 (19:50 +0300)]
RDMA/core: Change rdma_get_gid_attr returned error code

Change the error code returned from rdma_get_gid_attr when the GID entry
is invalid but the GID index is in the gid table size range to -ENODATA
instead of -EINVAL.

This change is done in order to provide a more accurate error reporting to
be used by the new GID query API in user space. Nevertheless, -EINVAL is
still returned from sysfs in the aforementioned case to maintain
compatibility with user space that expects -EINVAL.

Link: https://lore.kernel.org/r/20200923165015.2491894-2-leon@kernel.org
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agooverflow: Include header file with SIZE_MAX declaration
Leon Romanovsky [Sun, 13 Sep 2020 10:29:28 +0000 (13:29 +0300)]
overflow: Include header file with SIZE_MAX declaration

The various array_size functions use SIZE_MAX define, but missed limits.h
causes to failure to compile code that needs overflow.h.

 In file included from drivers/infiniband/core/uverbs_std_types_device.c:6:
 ./include/linux/overflow.h: In function 'array_size':
 ./include/linux/overflow.h:258:10: error: 'SIZE_MAX' undeclared (first use in this function)
   258 |   return SIZE_MAX;
       |          ^~~~~~~~

Fixes: 610b15c50e86 ("overflow.h: Add allocation size calculation helpers")
Link: https://lore.kernel.org/r/20200913102928.134985-1-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/qedr: Endianness warnings cleanup
Alok Prasad [Thu, 1 Oct 2020 10:09:59 +0000 (10:09 +0000)]
RDMA/qedr: Endianness warnings cleanup

Making a change to fix following sparse warnings reported by kbuild bot.

 CHECK   drivers/infiniband/hw/qedr/verbs.c

drivers/infiniband/hw/qedr/verbs.c:3872:59: warning: incorrect type in assignment (different base types)
drivers/infiniband/hw/qedr/verbs.c:3872:59:    expected restricted __le32 [usertype] sge_prod
drivers/infiniband/hw/qedr/verbs.c:3872:59:    got unsigned int [usertype] sge_prod
drivers/infiniband/hw/qedr/verbs.c:3875:59: warning: incorrect type in assignment (different base types)
drivers/infiniband/hw/qedr/verbs.c:3875:59:    expected restricted __le32 [usertype] wqe_prod
drivers/infiniband/hw/qedr/verbs.c:3875:59:    got unsigned int [usertype] wqe_prod

Link: https://lore.kernel.org/r/20201001100959.19940-1-palok@marvell.com
Reported-by: kbuild test robot <lkp@intel.com>
Fixes: acca72e2b031 ("RDMA/qedr: SRQ's bug fixes")
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Michal Kalderon <mkalderon@marvell.com>
Signed-off-by: Alok Prasad <palok@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/rtrs: Constify static struct attribute_group
Rikard Falkeborn [Wed, 30 Sep 2020 22:40:04 +0000 (00:40 +0200)]
RDMA/rtrs: Constify static struct attribute_group

The only usage of these is to pass their address to sysfs_create_group()
and sysfs_remove_group(), both which takes const pointers. Make it const
to allow the compiler to put them in read-only memory.

Link: https://lore.kernel.org/r/20200930224004.24279-3-rikard.falkeborn@gmail.com
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/core: Constify struct attribute_group
Rikard Falkeborn [Wed, 30 Sep 2020 22:40:03 +0000 (00:40 +0200)]
RDMA/core: Constify struct attribute_group

The only usage of the pma_table field in the ib_port struct is to pass its
address to sysfs_create_group() and sysfs_remove_group(). Make it const to
make it possible to constify a couple of static struct
attribute_group. This allows the compiler to put them in read-only memory.

Link: https://lore.kernel.org/r/20200930224004.24279-2-rikard.falkeborn@gmail.com
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoMerge tag 'iommu-fixes-v5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 1 Oct 2020 19:59:36 +0000 (12:59 -0700)]
Merge tag 'iommu-fixes-v5.9-rc7' of git://git./linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:

 - Fix a device reference counting bug in the Exynos IOMMU driver.

 - Lockdep fix for the Intel VT-d driver.

 - Fix a bug in the AMD IOMMU driver which caused corruption of the IVRS
   ACPI table and caused IOMMU driver initialization failures in kdump
   kernels.

* tag 'iommu-fixes-v5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb()
  iommu/amd: Fix the overwritten field in IVMD header
  iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()

3 years agoRDMA/mlx5: Sync device with CPU pages upon ODP MR registration
Yishai Hadas [Wed, 30 Sep 2020 16:38:28 +0000 (19:38 +0300)]
RDMA/mlx5: Sync device with CPU pages upon ODP MR registration

Sync device with CPU pages upon ODP MR registration. mlx5 already has to
zero the HW's version of the PAS list, may as well deliver a PAS list that
matches the current CPU page tables configuration.

Link: https://lore.kernel.org/r/20200930163828.1336747-5-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/mlx5: Extend advice MR to support non faulting mode
Yishai Hadas [Wed, 30 Sep 2020 16:38:27 +0000 (19:38 +0300)]
RDMA/mlx5: Extend advice MR to support non faulting mode

Extend advice MR to support non faulting mode, this can improve
performance by increasing the populated page tables in the device.

Link: https://lore.kernel.org/r/20200930163828.1336747-4-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoIB/core: Enable ODP sync without faulting
Yishai Hadas [Wed, 30 Sep 2020 16:38:26 +0000 (19:38 +0300)]
IB/core: Enable ODP sync without faulting

Enable ODP sync without faulting, this improves performance by reducing
the number of page faults in the system.

The gain from this option is that the device page table can be aligned
with the presented pages in the CPU page table without causing page
faults.

As of that, the overhead on data path from hardware point of view to
trigger a fault which end-up by calling the driver to bring the pages
will be dropped.

Link: https://lore.kernel.org/r/20200930163828.1336747-3-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoIB/core: Improve ODP to use hmm_range_fault()
Yishai Hadas [Wed, 30 Sep 2020 16:38:25 +0000 (19:38 +0300)]
IB/core: Improve ODP to use hmm_range_fault()

Move to use hmm_range_fault() instead of get_user_pags_remote() to improve
performance in a few aspects:

This includes:
- Dropping the need to allocate and free memory to hold its output

- No need any more to use put_page() to unpin the pages

- The logic to detect contiguous pages is done based on the returned
  order, no need to run per page and evaluate.

In addition, moving to use hmm_range_fault() enables to reduce page faults
in the system with it's snapshot mode, this will be introduced in next
patches from this series.

As part of this, cleanup some flows and use the required data structures
to work with hmm_range_fault().

Link: https://lore.kernel.org/r/20200930163828.1336747-2-leon@kernel.org
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Thu, 1 Oct 2020 18:49:01 +0000 (11:49 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fix from Catalin Marinas:
 "A previous commit to prevent AML memory opregions from accessing the
  kernel memory turned out to be too restrictive. Relax the permission
  check to permit the ACPI core to map kernel memory used for table
  overrides"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: permit ACPI core to map kernel memory used for table overrides

3 years agoMerge tag 'drm-fixes-2020-10-01-1' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Thu, 1 Oct 2020 16:45:37 +0000 (09:45 -0700)]
Merge tag 'drm-fixes-2020-10-01-1' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "AMD and vmwgfx fixes.

  Just dequeuing these a bit early as the AMD ones are bit larger than
  I'd prefer, but Alex missed last week so it's a double set of fixes.
  The larger ones are just register header fixes for the new chips that
  were just introduced in rc1 along with some new PCI IDs for new hw.
  Otherwise it is usual fixes.

  The vmwgfx fix was due to some testing I was doing and found we
  weren't booting properly, vmware had the fix internally so hurried it

  vmwgfx:
   - fix a regression due to TTM refactor

  amdgpu:
   - Fix potential double free in userptr handling
   - Sienna Cichlid and Navy Flounder udpates
   - Add Sienna Cichlid PCI IDs
   - Drop experimental flag for navi12
   - Raven fixes
   - Renoir fixes
   - HDCP fix
   - DCN3 fix for clang and older versions of gcc
   - Fix a runtime pm refcount issue"

* tag 'drm-fixes-2020-10-01-1' of git://anongit.freedesktop.org/drm/drm:
  drm/amdgpu: disable gfxoff temporarily for navy_flounder
  drm/amd/pm: setup APU dpm clock table in SMU HW initialization
  drm/vmwgfx: Fix error handling in get_node
  drm/amd/display: remove duplicate call to rn_vbios_smu_get_smu_version()
  drm/amdgpu/swsmu/smu12: fix force clock handling for mclk
  drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config
  drm/amdgpu/display: fix CFLAGS setup for DCN30
  drm/amd/display: fix return value check for hdcp_work
  drm/amdgpu: remove gpu_info fw support for sienna_cichlid etc.
  drm/amd/pm: Removed fixed clock in auto mode DPM
  drm/amdgpu: remove experimental flag from navi12
  drm/amdgpu: add device ID for sienna_cichlid (v2)
  drm/amdgpu: use the AV1 defines for VCN 3.0
  drm/amdgpu: add VCN 3.0 AV1 registers
  drm/amdgpu: add the GC 10.3 VRS registers
  drm/amdgpu: prevent double kfree ttm->sg

3 years agoMerge tag 'trace-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Thu, 1 Oct 2020 16:41:02 +0000 (09:41 -0700)]
Merge tag 'trace-v5.9-rc6' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Two tracing fixes:

   - Fix temp buffer accounting that caused a WARNING for
     ftrace_dump_on_opps()

   - Move the recursion check in one of the function callback helpers to
     the beginning of the function, as if the rcu_is_watching() gets
     traced, it will cause a recursive loop that will crash the kernel"

* tag 'trace-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Move RCU is watching check after recursion check
  tracing: Fix trace_find_next_entry() accounting of temp buffer size

3 years agoiommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb()
Lu Baolu [Sun, 27 Sep 2020 06:24:28 +0000 (14:24 +0800)]
iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb()

Lock(&iommu->lock) without disabling irq causes lockdep warnings.

[   12.703950] ========================================================
[   12.703962] WARNING: possible irq lock inversion dependency detected
[   12.703975] 5.9.0-rc6+ #659 Not tainted
[   12.703983] --------------------------------------------------------
[   12.703995] systemd-udevd/284 just changed the state of lock:
[   12.704007] ffffffffbd6ff4d8 (device_domain_lock){..-.}-{2:2}, at:
               iommu_flush_dev_iotlb.part.57+0x2e/0x90
[   12.704031] but this lock took another, SOFTIRQ-unsafe lock in the past:
[   12.704043]  (&iommu->lock){+.+.}-{2:2}
[   12.704045]

               and interrupts could create inverse lock ordering between
               them.

[   12.704073]
               other info that might help us debug this:
[   12.704085]  Possible interrupt unsafe locking scenario:

[   12.704097]        CPU0                    CPU1
[   12.704106]        ----                    ----
[   12.704115]   lock(&iommu->lock);
[   12.704123]                                local_irq_disable();
[   12.704134]                                lock(device_domain_lock);
[   12.704146]                                lock(&iommu->lock);
[   12.704158]   <Interrupt>
[   12.704164]     lock(device_domain_lock);
[   12.704174]
                *** DEADLOCK ***

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20200927062428.13713-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
3 years agoxen/events: don't use chip_data for legacy IRQs
Juergen Gross [Wed, 30 Sep 2020 09:16:14 +0000 (11:16 +0200)]
xen/events: don't use chip_data for legacy IRQs

Since commit c330fb1ddc0a ("XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.")
Xen is using the chip_data pointer for storing IRQ specific data. When
running as a HVM domain this can result in problems for legacy IRQs, as
those might use chip_data for their own purposes.

Use a local array for this purpose in case of legacy IRQs, avoiding the
double use.

Cc: stable@vger.kernel.org
Fixes: c330fb1ddc0a ("XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.")
Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Stefan Bader <stefan.bader@canonical.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20200930091614.13660-1-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
3 years agoiommu/amd: Fix the overwritten field in IVMD header
Adrian Huang [Sat, 26 Sep 2020 10:26:02 +0000 (18:26 +0800)]
iommu/amd: Fix the overwritten field in IVMD header

Commit 387caf0b759a ("iommu/amd: Treat per-device exclusion
ranges as r/w unity-mapped regions") accidentally overwrites
the 'flags' field in IVMD (struct ivmd_header) when the I/O
virtualization memory definition is associated with the
exclusion range entry. This leads to the corrupted IVMD table
(incorrect checksum). The kdump kernel reports the invalid checksum:

ACPI BIOS Warning (bug): Incorrect checksum in table [IVRS] - 0x5C, should be 0x60 (20200717/tbprint-177)
AMD-Vi: [Firmware Bug]: IVRS invalid checksum

Fix the above-mentioned issue by modifying the 'struct unity_map_entry'
member instead of the IVMD header.

Cleanup: The *exclusion_range* functions are not used anymore, so
get rid of them.

Fixes: 387caf0b759a ("iommu/amd: Treat per-device exclusion ranges as r/w unity-mapped regions")
Reported-and-tested-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Adrian Huang <ahuang12@lenovo.com>
Cc: Jerry Snitselaar <jsnitsel@redhat.com>
Link: https://lore.kernel.org/r/20200926102602.19177-1-adrianhuang0701@gmail.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
3 years agoKVM: arm64: Restore missing ISB on nVHE __tlb_switch_to_guest
Marc Zyngier [Mon, 13 Jul 2020 14:15:14 +0000 (15:15 +0100)]
KVM: arm64: Restore missing ISB on nVHE __tlb_switch_to_guest

Commit a0e50aa3f4a8 ("KVM: arm64: Factor out stage 2 page table
data from struct kvm") dropped the ISB after __load_guest_stage2(),
only leaving the one that is required when the speculative AT
workaround is in effect.

As Andrew points it: "This alternative is 'backwards' to avoid a
double ISB as there is one in __load_guest_stage2 when the workaround
is active."

Restore the missing ISB, conditionned on the AT workaround not being
active.

Fixes: a0e50aa3f4a8 ("KVM: arm64: Factor out stage 2 page table data from struct kvm")
Reported-by: Andrew Scull <ascull@google.com>
Reported-by: Thomas Tai <thomas.tai@oracle.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
3 years agogpio: pca953x: Correctly initialize registers 6 and 7 for PCA957x
Andy Shevchenko [Wed, 30 Sep 2020 14:20:13 +0000 (17:20 +0300)]
gpio: pca953x: Correctly initialize registers 6 and 7 for PCA957x

When driver has been converted to the bitmap API the non-bitmap functions
started behaving differently on 32-bit BE architectures since the bytes in
two consequent unsigned longs are in different order in comparison to byte
array. Hence if the chip had had more than 32 lines the memset() call over
it would have not set up upper lines correctly.
Although it's currently a theoretical case (no supported chips of this type
has 32+ lines), it's better to provide a clean code to avoid people thinking
this is okay and potentially producing not fully working things.

Fixes: 35d13d94893f ("gpio: pca953x: convert to use bitmap API")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20200930142013.59247-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
3 years agogpio: pca953x: Use bitmap API over implicit GCC extension
Andy Shevchenko [Wed, 30 Sep 2020 14:20:12 +0000 (17:20 +0300)]
gpio: pca953x: Use bitmap API over implicit GCC extension

In IRQ handler we have to clear bitmap before use. Currently
the GCC extension has been used for that. For sake of the consistency
switch to bitmap API. As expected bloat-o-meter shows no difference
in the object size.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Link: https://lore.kernel.org/r/20200930142013.59247-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
3 years agopinctrl: mediatek: check mtk_is_virt_gpio input parameter
Hanks Chen [Thu, 20 Aug 2020 11:22:25 +0000 (19:22 +0800)]
pinctrl: mediatek: check mtk_is_virt_gpio input parameter

check mtk_is_virt_gpio input parameter,
virtual gpio need to support eint mode.

add error handler for the ko case
to fix this boot fail:
pc : mtk_is_virt_gpio+0x20/0x38 [pinctrl_mtk_common_v2]
lr : mtk_gpio_get_direction+0x44/0xb0 [pinctrl_paris]

Fixes: edd546465002 ("pinctrl: mediatek: avoid virtual gpio trying to set reg")
Signed-off-by: Hanks Chen <hanks.chen@mediatek.com>
Acked-by: Sean Wang <sean.wang@kernel.org>
Singed-off-by: Jie Yang <sin_jieyang@mediatek.com>
Link: https://lore.kernel.org/r/1597922546-29633-1-git-send-email-hanks.chen@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
3 years agopinctrl: qcom: sm8250: correct sdc2_clk
Dmitry Baryshkov [Mon, 14 Sep 2020 09:18:46 +0000 (12:18 +0300)]
pinctrl: qcom: sm8250: correct sdc2_clk

Correct sdc2_clk pin definition (register offset is wrong, verified by
the msm-4.19 driver).

Fixes: 4e3ec9e407ad ("pinctrl: qcom: Add sm8250 pinctrl driver.")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200914091846.55204-1-dmitry.baryshkov@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
3 years agoMerge tag 'amd-drm-fixes-5.9-2020-09-30' of git://people.freedesktop.org/~agd5f/linux...
Dave Airlie [Thu, 1 Oct 2020 05:25:32 +0000 (15:25 +1000)]
Merge tag 'amd-drm-fixes-5.9-2020-09-30' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

amd-drm-fixes-5.9-2020-09-30:

amdgpu:
- Fix potential double free in userptr handling
- Sienna Cichlid and Navy Flounder udpates
- Add Sienna Cichlid PCI IDs
- Drop experimental flag for navi12
- Raven fixes
- Renoir fixes
- HDCP fix
- DCN3 fix for clang and older versions of gcc
- Fix a runtime pm refcount issue

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200930161326.4243-1-alexander.deucher@amd.com
3 years agoMAINTAINERS: Add Pali Rohár as aardvark PCI maintainer
Pali Rohár [Fri, 25 Sep 2020 09:21:15 +0000 (11:21 +0200)]
MAINTAINERS: Add Pali Rohár as aardvark PCI maintainer

Link: https://lore.kernel.org/r/20200925092115.16546-1-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Petazzzoni <thomas.petazzoni@bootlin.com>
3 years agoarm64: permit ACPI core to map kernel memory used for table overrides
Ard Biesheuvel [Tue, 29 Sep 2020 13:25:22 +0000 (15:25 +0200)]
arm64: permit ACPI core to map kernel memory used for table overrides

Jonathan reports that the strict policy for memory mapped by the
ACPI core breaks the use case of passing ACPI table overrides via
initramfs. This is due to the fact that the memory type used for
loading the initramfs in memory is not recognized as a memory type
that is typically used by firmware to pass firmware tables.

Since the purpose of the strict policy is to ensure that no AML or
other ACPI code can manipulate any memory that is used by the kernel
to keep its internal state or the state of user tasks, we can relax
the permission check, and allow mappings of memory that is reserved
and marked as NOMAP via memblock, and therefore not covered by the
linear mapping to begin with.

Fixes: 1583052d111f ("arm64/acpi: disallow AML memory opregions to access kernel memory")
Fixes: 325f5585ec36 ("arm64/acpi: disallow writeable AML opregion mapping for EFI code regions")
Reported-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Link: https://lore.kernel.org/r/20200929132522.18067-1-ardb@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
3 years agoMerge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 30 Sep 2020 21:18:38 +0000 (14:18 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "Another batch of clk driver fixes:

   - Make sure DRAM and ChipID region doesn't get disabled on Exynos

   - Fix a SATA failure on Tegra

   - Fix the emac_ptp clk divider on stratix10"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: socfpga: stratix10: fix the divider for the emac_ptp_free_clk
  clk: samsung: exynos4: mark 'chipid' clock as CLK_IGNORE_UNUSED
  clk: tegra: Fix missing prototype for tegra210_clk_register_emc()
  clk: tegra: Always program PLL_E when enabled
  clk: tegra: Capitalization fixes
  clk: samsung: Keep top BPLL mux on Exynos542x enabled

3 years agoRDMA/addr: Fix race with netevent_callback()/rdma_addr_cancel()
Jason Gunthorpe [Wed, 30 Sep 2020 07:20:07 +0000 (10:20 +0300)]
RDMA/addr: Fix race with netevent_callback()/rdma_addr_cancel()

This three thread race can result in the work being run once the callback
becomes NULL:

       CPU1                 CPU2                   CPU3
 netevent_callback()
                     process_one_req()       rdma_addr_cancel()
                      [..]
     spin_lock_bh()
   set_timeout()
     spin_unlock_bh()

spin_lock_bh()
list_del_init(&req->list);
spin_unlock_bh()

     req->callback = NULL
     spin_lock_bh()
       if (!list_empty(&req->list))
                         // Skipped!
         // cancel_delayed_work(&req->work);
     spin_unlock_bh()

    process_one_req() // again
     req->callback() // BOOM
cancel_delayed_work_sync()

The solution is to always cancel the work once it is completed so any
in between set_timeout() does not result in it running again.

Cc: stable@vger.kernel.org
Fixes: 44e75052bc2a ("RDMA/rdma_cm: Make rdma_addr_cancel into a fence")
Link: https://lore.kernel.org/r/20200930072007.1009692-1-leon@kernel.org
Reported-by: Dan Aloni <dan@kernelim.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/core: Remove ucontext->closing
Jason Gunthorpe [Tue, 29 Sep 2020 16:09:07 +0000 (13:09 -0300)]
RDMA/core: Remove ucontext->closing

Nothing reads this any more, and the reason for its existence has passed
due to the deferred fput() scheme.

Fixes: 8ea1f989aa07 ("drivers/IB,usnic: reduce scope of mmap_sem")
Link: https://lore.kernel.org/r/0-v1-df64ff042436+42-uctx_closing_jgg@nvidia.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/rtrs: Remove unused field of rtrs_iu
Gioh Kim [Wed, 30 Sep 2020 13:14:07 +0000 (15:14 +0200)]
RDMA/rtrs: Remove unused field of rtrs_iu

list field is not used anywhere

Link: https://lore.kernel.org/r/20200930131407.6438-1-gi-oh.kim@clous.ionos.com
Signed-off-by: Gioh Kim <gi-oh.kim@cloud.ionos.com>
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRISC-V: Check clint_time_val before use
Anup Patel [Sun, 27 Sep 2020 05:39:16 +0000 (11:09 +0530)]
RISC-V: Check clint_time_val before use

The NoMMU kernel is broken for QEMU virt machine from Linux-5.9-rc6
because clint_time_val is used even before CLINT driver is probed
at following places:
1. rand_initialize() calls get_cycles() which in-turn uses
   clint_time_val
2. boot_init_stack_canary() calls get_cycles() which in-turn
   uses clint_time_val

The issue#1 (above) is fixed by providing custom random_get_entropy()
for RISC-V NoMMU kernel. For issue#2 (above), we remove dependency of
boot_init_stack_canary() on get_cycles() and this is aligned with the
boot_init_stack_canary() implementations of ARM, ARM64 and MIPS kernel.

Fixes: d5be89a8d118 ("RISC-V: Resurrect the MMIO timer implementation for M-mode systems")
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Tested-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
3 years agobtrfs: fix filesystem corruption after a device replace
Filipe Manana [Wed, 23 Sep 2020 14:30:16 +0000 (15:30 +0100)]
btrfs: fix filesystem corruption after a device replace

We use a device's allocation state tree to track ranges in a device used
for allocated chunks, and we set ranges in this tree when allocating a new
chunk. However after a device replace operation, we were not setting the
allocated ranges in the new device's allocation state tree, so that tree
is empty after a device replace.

This means that a fitrim operation after a device replace will trim the
device ranges that have allocated chunks and extents, as we trim every
range for which there is not a range marked in the device's allocation
state tree. It is also important during chunk allocation, since the
device's allocation state is used to determine if a range is already
allocated when allocating a new chunk.

This is trivial to reproduce and the following script triggers the bug:

  $ cat reproducer.sh
  #!/bin/bash

  DEV1="/dev/sdg"
  DEV2="/dev/sdh"
  DEV3="/dev/sdi"

  wipefs -a $DEV1 $DEV2 $DEV3 &> /dev/null

  # Create a raid1 test fs on 2 devices.
  mkfs.btrfs -f -m raid1 -d raid1 $DEV1 $DEV2 > /dev/null
  mount $DEV1 /mnt/btrfs

  xfs_io -f -c "pwrite -S 0xab 0 10M" /mnt/btrfs/foo

  echo "Starting to replace $DEV1 with $DEV3"
  btrfs replace start -B $DEV1 $DEV3 /mnt/btrfs
  echo

  echo "Running fstrim"
  fstrim /mnt/btrfs
  echo

  echo "Unmounting filesystem"
  umount /mnt/btrfs

  echo "Mounting filesystem in degraded mode using $DEV3 only"
  wipefs -a $DEV1 $DEV2 &> /dev/null
  mount -o degraded $DEV3 /mnt/btrfs
  if [ $? -ne 0 ]; then
          dmesg | tail
          echo
          echo "Failed to mount in degraded mode"
          exit 1
  fi

  echo
  echo "File foo data (expected all bytes = 0xab):"
  od -A d -t x1 /mnt/btrfs/foo

  umount /mnt/btrfs

When running the reproducer:

  $ ./replace-test.sh
  wrote 10485760/10485760 bytes at offset 0
  10 MiB, 2560 ops; 0.0901 sec (110.877 MiB/sec and 28384.5216 ops/sec)
  Starting to replace /dev/sdg with /dev/sdi

  Running fstrim

  Unmounting filesystem
  Mounting filesystem in degraded mode using /dev/sdi only
  mount: /mnt/btrfs: wrong fs type, bad option, bad superblock on /dev/sdi, missing codepage or helper program, or other error.
  [19581.748641] BTRFS info (device sdg): dev_replace from /dev/sdg (devid 1) to /dev/sdi started
  [19581.803842] BTRFS info (device sdg): dev_replace from /dev/sdg (devid 1) to /dev/sdi finished
  [19582.208293] BTRFS info (device sdi): allowing degraded mounts
  [19582.208298] BTRFS info (device sdi): disk space caching is enabled
  [19582.208301] BTRFS info (device sdi): has skinny extents
  [19582.212853] BTRFS warning (device sdi): devid 2 uuid 1f731f47-e1bb-4f00-bfbb-9e5a0cb4ba9f is missing
  [19582.213904] btree_readpage_end_io_hook: 25839 callbacks suppressed
  [19582.213907] BTRFS error (device sdi): bad tree block start, want 30490624 have 0
  [19582.214780] BTRFS warning (device sdi): failed to read root (objectid=7): -5
  [19582.231576] BTRFS error (device sdi): open_ctree failed

  Failed to mount in degraded mode

So fix by setting all allocated ranges in the replace target device when
the replace operation is finishing, when we are holding the chunk mutex
and we can not race with new chunk allocations.

A test case for fstests follows soon.

Fixes: 1c11b63eff2a67 ("btrfs: replace pending/pinned chunks lists with io tree")
CC: stable@vger.kernel.org # 5.2+
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
3 years agobtrfs: move btrfs_rm_dev_replace_free_srcdev outside of all locks
Josef Bacik [Thu, 20 Aug 2020 15:18:27 +0000 (11:18 -0400)]
btrfs: move btrfs_rm_dev_replace_free_srcdev outside of all locks

When closing and freeing the source device we could end up doing our
final blkdev_put() on the bdev, which will grab the bd_mutex.  As such
we want to be holding as few locks as possible, so move this call
outside of the dev_replace->lock_finishing_cancel_unmount lock.  Since
we're modifying the fs_devices we need to make sure we're holding the
uuid_mutex here, so take that as well.

There's a report from syzbot probably hitting one of the cases where
the bd_mutex and device_list_mutex are taken in the wrong order, however
it's not with device replace, like this patch fixes. As there's no
reproducer available so far, we can't verify the fix.

https://lore.kernel.org/lkml/000000000000fc04d105afcf86d7@google.com/
link: https://syzkaller.appspot.com/bug?extid=84a0634dc5d21d488419
  WARNING: possible circular locking dependency detected
  5.9.0-rc5-syzkaller #0 Not tainted
  ------------------------------------------------------
  syz-executor.0/6878 is trying to acquire lock:
  ffff88804c17d780 (&bdev->bd_mutex){+.+.}-{3:3}, at: blkdev_put+0x30/0x520 fs/block_dev.c:1804

  but task is already holding lock:
  ffff8880908cfce0 (&fs_devs->device_list_mutex){+.+.}-{3:3}, at: close_fs_devices.part.0+0x2e/0x800 fs/btrfs/volumes.c:1159

  which lock already depends on the new lock.

  the existing dependency chain (in reverse order) is:

  -> #4 (&fs_devs->device_list_mutex){+.+.}-{3:3}:
 __mutex_lock_common kernel/locking/mutex.c:956 [inline]
 __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
 btrfs_finish_chunk_alloc+0x281/0xf90 fs/btrfs/volumes.c:5255
 btrfs_create_pending_block_groups+0x2f3/0x700 fs/btrfs/block-group.c:2109
 __btrfs_end_transaction+0xf5/0x690 fs/btrfs/transaction.c:916
 find_free_extent_update_loop fs/btrfs/extent-tree.c:3807 [inline]
 find_free_extent+0x23b7/0x2e60 fs/btrfs/extent-tree.c:4127
 btrfs_reserve_extent+0x166/0x460 fs/btrfs/extent-tree.c:4206
 cow_file_range+0x3de/0x9b0 fs/btrfs/inode.c:1063
 btrfs_run_delalloc_range+0x2cf/0x1410 fs/btrfs/inode.c:1838
 writepage_delalloc+0x150/0x460 fs/btrfs/extent_io.c:3439
 __extent_writepage+0x441/0xd00 fs/btrfs/extent_io.c:3653
 extent_write_cache_pages.constprop.0+0x69d/0x1040 fs/btrfs/extent_io.c:4249
 extent_writepages+0xcd/0x2b0 fs/btrfs/extent_io.c:4370
 do_writepages+0xec/0x290 mm/page-writeback.c:2352
 __writeback_single_inode+0x125/0x1400 fs/fs-writeback.c:1461
 writeback_sb_inodes+0x53d/0xf40 fs/fs-writeback.c:1721
 wb_writeback+0x2ad/0xd40 fs/fs-writeback.c:1894
 wb_do_writeback fs/fs-writeback.c:2039 [inline]
 wb_workfn+0x2dc/0x13e0 fs/fs-writeback.c:2080
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

  -> #3 (sb_internal#2){.+.+}-{0:0}:
 percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
 __sb_start_write+0x234/0x470 fs/super.c:1672
 sb_start_intwrite include/linux/fs.h:1690 [inline]
 start_transaction+0xbe7/0x1170 fs/btrfs/transaction.c:624
 find_free_extent_update_loop fs/btrfs/extent-tree.c:3789 [inline]
 find_free_extent+0x25e1/0x2e60 fs/btrfs/extent-tree.c:4127
 btrfs_reserve_extent+0x166/0x460 fs/btrfs/extent-tree.c:4206
 cow_file_range+0x3de/0x9b0 fs/btrfs/inode.c:1063
 btrfs_run_delalloc_range+0x2cf/0x1410 fs/btrfs/inode.c:1838
 writepage_delalloc+0x150/0x460 fs/btrfs/extent_io.c:3439
 __extent_writepage+0x441/0xd00 fs/btrfs/extent_io.c:3653
 extent_write_cache_pages.constprop.0+0x69d/0x1040 fs/btrfs/extent_io.c:4249
 extent_writepages+0xcd/0x2b0 fs/btrfs/extent_io.c:4370
 do_writepages+0xec/0x290 mm/page-writeback.c:2352
 __writeback_single_inode+0x125/0x1400 fs/fs-writeback.c:1461
 writeback_sb_inodes+0x53d/0xf40 fs/fs-writeback.c:1721
 wb_writeback+0x2ad/0xd40 fs/fs-writeback.c:1894
 wb_do_writeback fs/fs-writeback.c:2039 [inline]
 wb_workfn+0x2dc/0x13e0 fs/fs-writeback.c:2080
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

  -> #2 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}:
 __flush_work+0x60e/0xac0 kernel/workqueue.c:3041
 wb_shutdown+0x180/0x220 mm/backing-dev.c:355
 bdi_unregister+0x174/0x590 mm/backing-dev.c:872
 del_gendisk+0x820/0xa10 block/genhd.c:933
 loop_remove drivers/block/loop.c:2192 [inline]
 loop_control_ioctl drivers/block/loop.c:2291 [inline]
 loop_control_ioctl+0x3b1/0x480 drivers/block/loop.c:2257
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

  -> #1 (loop_ctl_mutex){+.+.}-{3:3}:
 __mutex_lock_common kernel/locking/mutex.c:956 [inline]
 __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
 lo_open+0x19/0xd0 drivers/block/loop.c:1893
 __blkdev_get+0x759/0x1aa0 fs/block_dev.c:1507
 blkdev_get fs/block_dev.c:1639 [inline]
 blkdev_open+0x227/0x300 fs/block_dev.c:1753
 do_dentry_open+0x4b9/0x11b0 fs/open.c:817
 do_open fs/namei.c:3251 [inline]
 path_openat+0x1b9a/0x2730 fs/namei.c:3368
 do_filp_open+0x17e/0x3c0 fs/namei.c:3395
 do_sys_openat2+0x16d/0x420 fs/open.c:1168
 do_sys_open fs/open.c:1184 [inline]
 __do_sys_open fs/open.c:1192 [inline]
 __se_sys_open fs/open.c:1188 [inline]
 __x64_sys_open+0x119/0x1c0 fs/open.c:1188
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

  -> #0 (&bdev->bd_mutex){+.+.}-{3:3}:
 check_prev_add kernel/locking/lockdep.c:2496 [inline]
 check_prevs_add kernel/locking/lockdep.c:2601 [inline]
 validate_chain kernel/locking/lockdep.c:3218 [inline]
 __lock_acquire+0x2a96/0x5780 kernel/locking/lockdep.c:4426
 lock_acquire+0x1f3/0xae0 kernel/locking/lockdep.c:5006
 __mutex_lock_common kernel/locking/mutex.c:956 [inline]
 __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
 blkdev_put+0x30/0x520 fs/block_dev.c:1804
 btrfs_close_bdev fs/btrfs/volumes.c:1117 [inline]
 btrfs_close_bdev fs/btrfs/volumes.c:1107 [inline]
 btrfs_close_one_device fs/btrfs/volumes.c:1133 [inline]
 close_fs_devices.part.0+0x1a4/0x800 fs/btrfs/volumes.c:1161
 close_fs_devices fs/btrfs/volumes.c:1193 [inline]
 btrfs_close_devices+0x95/0x1f0 fs/btrfs/volumes.c:1179
 close_ctree+0x688/0x6cb fs/btrfs/disk-io.c:4149
 generic_shutdown_super+0x144/0x370 fs/super.c:464
 kill_anon_super+0x36/0x60 fs/super.c:1108
 btrfs_kill_super+0x38/0x50 fs/btrfs/super.c:2265
 deactivate_locked_super+0x94/0x160 fs/super.c:335
 deactivate_super+0xad/0xd0 fs/super.c:366
 cleanup_mnt+0x3a3/0x530 fs/namespace.c:1118
 task_work_run+0xdd/0x190 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:163 [inline]
 exit_to_user_mode_prepare+0x1e1/0x200 kernel/entry/common.c:190
 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:265
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

  other info that might help us debug this:

  Chain exists of:
    &bdev->bd_mutex --> sb_internal#2 --> &fs_devs->device_list_mutex

   Possible unsafe locking scenario:

 CPU0                    CPU1
 ----                    ----
    lock(&fs_devs->device_list_mutex);
 lock(sb_internal#2);
 lock(&fs_devs->device_list_mutex);
    lock(&bdev->bd_mutex);

   *** DEADLOCK ***

  3 locks held by syz-executor.0/6878:
   #0: ffff88809070c0e0 (&type->s_umount_key#70){++++}-{3:3}, at: deactivate_super+0xa5/0xd0 fs/super.c:365
   #1: ffffffff8a5b37a8 (uuid_mutex){+.+.}-{3:3}, at: btrfs_close_devices+0x23/0x1f0 fs/btrfs/volumes.c:1178
   #2: ffff8880908cfce0 (&fs_devs->device_list_mutex){+.+.}-{3:3}, at: close_fs_devices.part.0+0x2e/0x800 fs/btrfs/volumes.c:1159

  stack backtrace:
  CPU: 0 PID: 6878 Comm: syz-executor.0 Not tainted 5.9.0-rc5-syzkaller #0
  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
  Call Trace:
   __dump_stack lib/dump_stack.c:77 [inline]
   dump_stack+0x198/0x1fd lib/dump_stack.c:118
   check_noncircular+0x324/0x3e0 kernel/locking/lockdep.c:1827
   check_prev_add kernel/locking/lockdep.c:2496 [inline]
   check_prevs_add kernel/locking/lockdep.c:2601 [inline]
   validate_chain kernel/locking/lockdep.c:3218 [inline]
   __lock_acquire+0x2a96/0x5780 kernel/locking/lockdep.c:4426
   lock_acquire+0x1f3/0xae0 kernel/locking/lockdep.c:5006
   __mutex_lock_common kernel/locking/mutex.c:956 [inline]
   __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
   blkdev_put+0x30/0x520 fs/block_dev.c:1804
   btrfs_close_bdev fs/btrfs/volumes.c:1117 [inline]
   btrfs_close_bdev fs/btrfs/volumes.c:1107 [inline]
   btrfs_close_one_device fs/btrfs/volumes.c:1133 [inline]
   close_fs_devices.part.0+0x1a4/0x800 fs/btrfs/volumes.c:1161
   close_fs_devices fs/btrfs/volumes.c:1193 [inline]
   btrfs_close_devices+0x95/0x1f0 fs/btrfs/volumes.c:1179
   close_ctree+0x688/0x6cb fs/btrfs/disk-io.c:4149
   generic_shutdown_super+0x144/0x370 fs/super.c:464
   kill_anon_super+0x36/0x60 fs/super.c:1108
   btrfs_kill_super+0x38/0x50 fs/btrfs/super.c:2265
   deactivate_locked_super+0x94/0x160 fs/super.c:335
   deactivate_super+0xad/0xd0 fs/super.c:366
   cleanup_mnt+0x3a3/0x530 fs/namespace.c:1118
   task_work_run+0xdd/0x190 kernel/task_work.c:141
   tracehook_notify_resume include/linux/tracehook.h:188 [inline]
   exit_to_user_mode_loop kernel/entry/common.c:163 [inline]
   exit_to_user_mode_prepare+0x1e1/0x200 kernel/entry/common.c:190
   syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:265
   entry_SYSCALL_64_after_hwframe+0x44/0xa9
  RIP: 0033:0x460027
  RSP: 002b:00007fff59216328 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
  RAX: 0000000000000000 RBX: 0000000000076035 RCX: 0000000000460027
  RDX: 0000000000403188 RSI: 0000000000000002 RDI: 00007fff592163d0
  RBP: 0000000000000333 R08: 0000000000000000 R09: 000000000000000b
  R10: 0000000000000005 R11: 0000000000000246 R12: 00007fff59217460
  R13: 0000000002df2a60 R14: 0000000000000000 R15: 00007fff59217460

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
[ add syzbot reference ]
Signed-off-by: David Sterba <dsterba@suse.com>
3 years agoARM: imx6q: Fixup RCU usage for cpuidle
Ulf Hansson [Wed, 30 Sep 2020 11:20:23 +0000 (13:20 +0200)]
ARM: imx6q: Fixup RCU usage for cpuidle

The commit eb1f00237aca ("lockdep,trace: Expose tracepoints"), started to
expose us for tracepoints. For imx6q cpuidle, this leads to an RCU splat
according to below.

[6.870684] [<c0db7690>] (_raw_spin_lock) from [<c011f6a4>] (imx6q_enter_wait+0x18/0x9c)
[6.878846] [<c011f6a4>] (imx6q_enter_wait) from [<c09abfb0>] (cpuidle_enter_state+0x168/0x5e4)

To fix the problem, let's assign the corresponding idlestate->flags the
CPUIDLE_FLAG_RCU_IDLE bit, which enables us to call rcu_idle_enter|exit()
at the proper point.

Reported-by: Dong Aisheng <aisheng.dong@nxp.com>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
3 years agoDocumentation: PM: Fix a reStructuredText syntax error
Yoann Congal [Tue, 29 Sep 2020 20:41:58 +0000 (22:41 +0200)]
Documentation: PM: Fix a reStructuredText syntax error

Fix a reStructuredText syntax error in the cpuidle PM admin-guide
documentation: the ``...'' quotation marks are parsed as partial ''...''
reStructuredText markup and break the output formatting.

This change them to "...".

Signed-off-by: Yoann Congal <yoann.congal@smile.fr>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
3 years agocpufreq: intel_pstate: Fix missing return statement
Zhang Rui [Mon, 28 Sep 2020 03:33:42 +0000 (11:33 +0800)]
cpufreq: intel_pstate: Fix missing return statement

Fix missing return statement when writing "off" to intel_pstate status
sysfs I/F.

Fixes: 55671ea3257a ("cpufreq: intel_pstate: Free memory only when turning off")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
3 years agodrm/amdgpu: disable gfxoff temporarily for navy_flounder
Jiansong Chen [Wed, 30 Sep 2020 07:30:24 +0000 (15:30 +0800)]
drm/amdgpu: disable gfxoff temporarily for navy_flounder

gfxoff is temporarily disabled for navy_flounder, since
at present the feature caused some tdr when performing
display operations.

Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amd/pm: setup APU dpm clock table in SMU HW initialization
Evan Quan [Wed, 30 Sep 2020 04:07:56 +0000 (12:07 +0800)]
drm/amd/pm: setup APU dpm clock table in SMU HW initialization

As the dpm clock table is needed during DC HW initialization.
And that (DC HW initialization) comes before smu_late_init()
where current APU dpm clock table setup is performed. So, NULL
pointer dereference will be triggered. By moving APU dpm clock
table setup to smu_hw_init(), this can be avoided.

Fixes: 02cf91c113ea ("drm/amd/powerplay: postpone operations not required for hw setup to late_init")
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reported-by: Dirk Gouders <dirk@gouders.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agoMerge tag 'gpio-fixes-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Walleij [Wed, 30 Sep 2020 09:38:04 +0000 (11:38 +0200)]
Merge tag 'gpio-fixes-for-v5.9' of git://git./linux/kernel/git/brgl/linux into fixes

gpio fixes for v5.9

- correct logic of GPIO_LINE_DIRECTION in gpio-amd-fch

3 years agoclocksource: clint: Export clint_time_val for modules
Palmer Dabbelt [Wed, 30 Sep 2020 06:48:47 +0000 (23:48 -0700)]
clocksource: clint: Export clint_time_val for modules

clint_time_val will soon be used by the RISC-V implementation of
random_get_entropy(), which is a static inline function that may be used by
modules (at least CRYPTO_JITTERENTROPY=m).

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
3 years agoMerge branch 'vmwgfx-fixes-5.9' of git://people.freedesktop.org/~sroland/linux into...
Dave Airlie [Wed, 30 Sep 2020 04:21:22 +0000 (14:21 +1000)]
Merge branch 'vmwgfx-fixes-5.9' of git://people.freedesktop.org/~sroland/linux into drm-fixes

One vmwgfx regression fix.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: "Roland Scheidegger (VMware)" <rscheidegger.oss@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200930041000.2423-1-rscheidegger.oss@gmail.com
3 years agodrm/vmwgfx: Fix error handling in get_node
Zack Rusin [Fri, 25 Sep 2020 15:54:10 +0000 (11:54 -0400)]
drm/vmwgfx: Fix error handling in get_node

ttm_mem_type_manager_func.get_node was changed to return -ENOSPC
instead of setting the node pointer to NULL. Unfortunately
vmwgfx still had two places where it was explicitly converting
-ENOSPC to 0 causing regressions. This fixes those spots by
allowing -ENOSPC to be returned. That seems to fix recent
regressions with vmwgfx.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Sigend-off-by: Roland Scheidegger <sroland@vmware.com>
3 years agoscsi: iscsi: iscsi_tcp: Avoid holding spinlock while calling getpeername()
Mark Mielke [Mon, 28 Sep 2020 04:33:29 +0000 (00:33 -0400)]
scsi: iscsi: iscsi_tcp: Avoid holding spinlock while calling getpeername()

The kernel may fail to boot or devices may fail to come up when
initializing iscsi_tcp devices starting with Linux 5.8.

Commit a79af8a64d39 ("[SCSI] iscsi_tcp: use iscsi_conn_get_addr_param
libiscsi function") introduced getpeername() within the session spinlock.

Commit 1b66d253610c ("bpf: Add get{peer, sock}name attach types for
sock_addr") introduced BPF_CGROUP_RUN_SA_PROG_LOCK() within getpeername(),
which acquires a mutex and when used from iscsi_tcp devices can now lead to
"BUG: scheduling while atomic:" and subsequent damage.

Ensure that the spinlock is released before calling getpeername() or
getsockname(). sock_hold() and sock_put() are used to ensure that the
socket reference is preserved until after the getpeername() or
getsockname() complete.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1877345
Link: https://lkml.org/lkml/2020/7/28/1085
Link: https://lkml.org/lkml/2020/8/31/459
Link: https://lore.kernel.org/r/20200928043329.606781-1-mark.mielke@gmail.com
Fixes: a79af8a64d39 ("[SCSI] iscsi_tcp: use iscsi_conn_get_addr_param libiscsi function")
Fixes: 1b66d253610c ("bpf: Add get{peer, sock}name attach types for sock_addr")
Cc: stable@vger.kernel.org
Reported-by: Marc Dionne <marc.c.dionne@gmail.com>
Tested-by: Marc Dionne <marc.c.dionne@gmail.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Mark Mielke <mark.mielke@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
3 years agoMerge tag 'devicetree-fixes-for-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 30 Sep 2020 00:56:30 +0000 (17:56 -0700)]
Merge tag 'devicetree-fixes-for-5.9-3' of git://git./linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Fix handling of HOST_EXTRACFLAGS for dtc

 - Several warning fixes for DT bindings

* tag 'devicetree-fixes-for-5.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  scripts/dtc: only append to HOST_EXTRACFLAGS instead of overwriting
  dt-bindings: Fix 'reg' size issues in zynqmp examples
  ARM: dts: bcm2835: Change firmware compatible from simple-bus to simple-mfd
  dt-bindings: leds: cznic,turris-omnia-leds: fix error in binding
  dt-bindings: crypto: sa2ul: fix a DT binding check warning

3 years agoautofs: use __kernel_write() for the autofs pipe writing
Linus Torvalds [Wed, 30 Sep 2020 00:18:34 +0000 (17:18 -0700)]
autofs: use __kernel_write() for the autofs pipe writing

autofs got broken in some configurations by commit 13c164b1a186
("autofs: switch to kernel_write") because there is now an extra LSM
permission check done by security_file_permission() in rw_verify_area().

autofs is one if the few places that really does want the much more
limited __kernel_write(), because the write is an internal kernel one
that shouldn't do any user permission checks (it also doesn't need the
file_start_write/file_end_write logic, since it's just a pipe).

There are a couple of other cases like that - accounting, core dumping,
and splice - but autofs stands out because it can be built as a module.

As a result, we need to export this internal __kernel_write() function
again.

We really don't want any other module to use this, but we don't have a
"EXPORT_SYMBOL_FOR_AUTOFS_ONLY()".  But we can mark it GPL-only to at
least approximate that "internal use only" for licensing.

While in this area, make autofs pass in NULL for the file position
pointer, since it's always a pipe, and we now use a NULL file pointer
for streaming file descriptors (see file_ppos() and commit 438ab720c675:
"vfs: pass ppos=NULL to .read()/.write() of FMODE_STREAM files")

This effectively reverts commits 9db977522449 ("fs: unexport
__kernel_write") and 13c164b1a186 ("autofs: switch to kernel_write").

Fixes: 13c164b1a186 ("autofs: switch to kernel_write")
Reported-by: Ondrej Mosnacek <omosnace@redhat.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agodrm/amd/display: remove duplicate call to rn_vbios_smu_get_smu_version()
Dirk Gouders [Sun, 27 Sep 2020 09:39:45 +0000 (11:39 +0200)]
drm/amd/display: remove duplicate call to rn_vbios_smu_get_smu_version()

Commit 78fe9f63947a2b ("drm/amd/display: Remove DISPCLK Limit Floor for Certain SMU Versions")
added a call to rn_vbios_smu_get_smu_version() to set clk_mgr->smu_ver.
That field is initialized prior to the if-statement, already.

Fixes: 78fe9f63947a2b (drm/amd/display: Remove DISPCLK Limit Floor for Certain SMU Versions)
Signed-off-by: Dirk Gouders <dirk@gouders.net>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Sung Lee <sung.lee@amd.com>
Cc: Yongqiang Sun <yongqiang.sun@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amdgpu/swsmu/smu12: fix force clock handling for mclk
Alex Deucher [Mon, 28 Sep 2020 18:16:25 +0000 (14:16 -0400)]
drm/amdgpu/swsmu/smu12: fix force clock handling for mclk

The state array is in the reverse order compared to other asics
(high to low rather than low to high).

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1313
Reviewed-by: Prike Liang <Prike.Liang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config
Jean Delvare [Mon, 28 Sep 2020 09:10:37 +0000 (11:10 +0200)]
drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config

A recent attempt to fix a ref count leak in
amdgpu_display_crtc_set_config() turned out to be doing too much and
"fixed" an intended decrease as if it were a leak. Undo that part to
restore the proper balance. This is the very nature of this function
to increase or decrease the power reference count depending on the
situation.

Consequences of this bug is that the power reference would
eventually get down to 0 while the display was still in use,
resulting in that display switching off unexpectedly.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: e008fa6fb415 ("drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config")
Cc: stable@vger.kernel.org
Cc: Navid Emamdoost <navid.emamdoost@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amdgpu/display: fix CFLAGS setup for DCN30
Alex Deucher [Tue, 22 Sep 2020 15:34:16 +0000 (11:34 -0400)]
drm/amdgpu/display: fix CFLAGS setup for DCN30

Properly handle clang and older versions of gcc.

Fixes: e77165bf7b02a3 ("drm/amd/display: Add DCN3 blocks to Makefile")
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amd/display: fix return value check for hdcp_work
Flora Cui [Wed, 23 Sep 2020 06:42:59 +0000 (14:42 +0800)]
drm/amd/display: fix return value check for hdcp_work

max_caps might be 0, thus hdcp_work might be ZERO_SIZE_PTR

Signed-off-by: Flora Cui <flora.cui@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amdgpu: remove gpu_info fw support for sienna_cichlid etc.
Jiansong Chen [Wed, 23 Sep 2020 03:58:23 +0000 (11:58 +0800)]
drm/amdgpu: remove gpu_info fw support for sienna_cichlid etc.

Remove gpu_info fw support for sienna_cichlid etc., since the
information can be retrieved from discovery binary.

Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amd/pm: Removed fixed clock in auto mode DPM
Sudheesh Mavila [Tue, 15 Sep 2020 07:18:20 +0000 (12:48 +0530)]
drm/amd/pm: Removed fixed clock in auto mode DPM

SMU10_UMD_PSTATE_PEAK_FCLK value should not be used to set the DPM.

Suggested-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agoscripts/dtc: only append to HOST_EXTRACFLAGS instead of overwriting
Uwe Kleine-König [Sat, 19 Sep 2020 14:39:22 +0000 (16:39 +0200)]
scripts/dtc: only append to HOST_EXTRACFLAGS instead of overwriting

When building with

$ HOST_EXTRACFLAGS=-g make

the expectation is that host tools are built with debug informations.
This however doesn't happen if the Makefile assigns a new value to the
HOST_EXTRACFLAGS instead of appending to it. So use += instead of := for
the first assignment.

Fixes: e3fd9b5384f3 ("scripts/dtc: consolidate include path options in Makefile")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Rob Herring <robh@kernel.org>
3 years agodt-bindings: Fix 'reg' size issues in zynqmp examples
Rob Herring [Mon, 28 Sep 2020 15:22:56 +0000 (10:22 -0500)]
dt-bindings: Fix 'reg' size issues in zynqmp examples

The default sizes in examples for 'reg' are 1 cell each. Fix the
incorrect sizes in zynqmp examples:

Documentation/devicetree/bindings/dma/xilinx/xlnx,zynqmp-dpdma.example.dt.yaml: example-0: dma-controller@fd4c0000:reg:0: [0, 4249616384, 0, 4096] is too long
From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml
Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.example.dt.yaml: example-0: display@fd4a0000:reg:0: [0, 4249485312, 0, 4096] is too long
From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml
Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.example.dt.yaml: example-0: display@fd4a0000:reg:1: [0, 4249526272, 0, 4096] is too long
From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml
Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.example.dt.yaml: example-0: display@fd4a0000:reg:2: [0, 4249530368, 0, 4096] is too long
From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml
Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.example.dt.yaml: example-0: display@fd4a0000:reg:3: [0, 4249534464, 0, 4096] is too long
From schema: /usr/local/lib/python3.8/dist-packages/dtschema/schemas/reg.yaml

Cc: Hyun Kwon <hyun.kwon@xilinx.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: dri-devel@lists.freedesktop.org
Cc: dmaengine@vger.kernel.org
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Rob Herring <robh@kernel.org>
3 years agoMerge tag 'dmaengine-fix-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul...
Linus Torvalds [Tue, 29 Sep 2020 17:35:42 +0000 (10:35 -0700)]
Merge tag 'dmaengine-fix-5.9' of git://git./linux/kernel/git/vkoul/dmaengine

Pull dmaengine fix from Vinod Koul:
 "Fix dmatest for misconfigured channel"

* tag 'dmaengine-fix-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
  dmaengine: dmatest: Prevent to run on misconfigured channel

3 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Tue, 29 Sep 2020 17:33:06 +0000 (10:33 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "A couple of last minute fixes"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vhost-vdpa: fix backend feature ioctls
  vhost: Fix documentation

3 years agoftrace: Move RCU is watching check after recursion check
Steven Rostedt (VMware) [Tue, 29 Sep 2020 16:40:31 +0000 (12:40 -0400)]
ftrace: Move RCU is watching check after recursion check

The first thing that the ftrace function callback helper functions should do
is to check for recursion. Peter Zijlstra found that when
"rcu_is_watching()" had its notrace removed, it caused perf function tracing
to crash. This is because the call of rcu_is_watching() is tested before
function recursion is checked and and if it is traced, it will cause an
infinite recursion loop.

rcu_is_watching() should still stay notrace, but to prevent this should
never had crashed in the first place. The recursion prevention must be the
first thing done in callback functions.

Link: https://lore.kernel.org/r/20200929112541.GM2628@hirez.programming.kicks-ass.net
Cc: stable@vger.kernel.org
Cc: Paul McKenney <paulmck@kernel.org>
Fixes: c68c0fa293417 ("ftrace: Have ftrace_ops_get_func() handle RCU and PER_CPU flags too")
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reported-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>