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893407 Commits

Author SHA1 Message Date
Andrey Zhizhikin e9646ca701 This is the 5.4.132 stable release
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Merge tag 'v5.4.132' into 5.4-2.3.x-imx

This is the 5.4.132 stable release

Conflicts (manual resolve):
- drivers/gpu/drm/rockchip/cdn-dp-core.c:
Fix merge hiccup when integrating upstream commit 450c25b8a4
("drm/rockchip: cdn-dp-core: add missing clk_disable_unprepare() on
error in cdn_dp_grf_write()")

- drivers/perf/fsl_imx8_ddr_perf.c:
Port upstream commit 3fea9b708a ("drivers/perf: fix the missed
ida_simple_remove() in ddr_perf_probe()") manually to NXP version.

Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>
2021-07-20 15:04:13 +00:00
Andrey Zhizhikin d27b767527 This is the 5.4.131 stable release
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Merge tag 'v5.4.131' into 5.4-2.3.x-imx

This is the 5.4.131 stable release

Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>
2021-07-20 15:03:55 +00:00
Andrey Zhizhikin 3050bcad92 Linux 5.4.130
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Merge tag 'v5.4.130' into 5.4-2.3.x-imx

Linux 5.4.130

Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>
2021-07-20 15:03:46 +00:00
Greg Kroah-Hartman 7c76bd6c36 Linux 5.4.132
Link: https://lore.kernel.org/r/20210712060659.886176320@linuxfoundation.org
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20210712184735.997723427@linuxfoundation.org
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Tested-by: Hulk Robot <hulkrobot@huawei.com>
2021-07-14 16:53:49 +02:00
Joerg Roedel 792d47ca52 iommu/dma: Fix compile warning in 32-bit builds
commit 7154cbd31c2069726cf730b0ed94e2e79a221602 upstream.

Compiling the recent dma-iommu changes under 32-bit x86 triggers this
compile warning:

drivers/iommu/dma-iommu.c:249:5: warning: format ‘%llx’ expects argument of type ‘long long unsigned int’, but argument 3 has type ‘phys_addr_t’ {aka ‘unsigned int’} [-Wformat=]

The reason is that %llx is used to print a variable of type
phys_addr_t. Fix it by using the correct %pa format specifier for
phys_addr_t.

Cc: Srinath Mannam <srinath.mannam@broadcom.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Oza Pawandeep <poza@codeaurora.org>
Fixes: 571f316074a20 ("iommu/dma: Fix IOVA reserve dma ranges")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20210607124905.27525-1-joro@8bytes.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 16:53:48 +02:00
Quat Le a7f4f0c4e7 scsi: core: Retry I/O for Notify (Enable Spinup) Required error
commit 104739aca4488909175e9e31d5cd7d75b82a2046 upstream.

If the device is power-cycled, it takes time for the initiator to transmit
the periodic NOTIFY (ENABLE SPINUP) SAS primitive, and for the device to
respond to the primitive to become ACTIVE. Retry the I/O request to allow
the device time to become ACTIVE.

Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210629155826.48441-1-quat.le@oracle.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Quat Le <quat.le@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 16:53:48 +02:00
Johan Hovold 4aaace2dc1 mmc: vub3000: fix control-request direction
commit 3c0bb3107703d2c58f7a0a7a2060bb57bc120326 upstream.

The direction of the pipe argument must match the request-type direction
bit or control requests may fail depending on the host-controller-driver
implementation.

Fix the SET_ROM_WAIT_STATES request which erroneously used
usb_rcvctrlpipe().

Fixes: 88095e7b47 ("mmc: Add new VUB300 USB-to-SD/SDIO/MMC driver")
Cc: stable@vger.kernel.org      # 3.0
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210521133026.17296-1-johan@kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 16:53:48 +02:00
Bean Huo 5712b828b8 mmc: block: Disable CMDQ on the ioctl path
commit 70b52f09080565030a530a784f1c9948a7f48ca3 upstream.

According to the eMMC Spec:
"When command queuing is enabled (CMDQ Mode En bit in CMDQ_MODE_EN
field is set to ‘1’) class 11 commands are the only method through
which data transfer tasks can be issued. Existing data transfer
commands, namely CMD18/CMD17 and CMD25/CMD24, are not supported when
command queuing is enabled."
which means if CMDQ is enabled, the FFU commands will not be supported.
To fix this issue, just simply disable CMDQ on the ioctl path, and
re-enable CMDQ once ioctl request is completed.

Tested-by: Michael Brunner <Michael.Brunner@kontron.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: 1e8e55b670 (mmc: block: Add CQE support)
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210504203209.361597-1-huobean@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 16:53:48 +02:00
Long Li 90d29149e3 block: return the correct bvec when checking for gaps
commit c9c9762d4d44dcb1b2ba90cfb4122dc11ceebf31 upstream.

After commit 07173c3ec2 ("block: enable multipage bvecs"), a bvec can
have multiple pages. But bio_will_gap() still assumes one page bvec while
checking for merging. If the pages in the bvec go across the
seg_boundary_mask, this check for merging can potentially succeed if only
the 1st page is tested, and can fail if all the pages are tested.

Later, when SCSI builds the SG list the same check for merging is done in
__blk_segment_map_sg_merge() with all the pages in the bvec tested. This
time the check may fail if the pages in bvec go across the
seg_boundary_mask (but tested okay in bio_will_gap() earlier, so those
BIOs were merged). If this check fails, we end up with a broken SG list
for drivers assuming the SG list not having offsets in intermediate pages.
This results in incorrect pages written to the disk.

Fix this by returning the multi-page bvec when testing gaps for merging.

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: Pavel Begunkov <asml.silence@gmail.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Jeffle Xu <jefflexu@linux.alibaba.com>
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org
Fixes: 07173c3ec2 ("block: enable multipage bvecs")
Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/1623094445-22332-1-git-send-email-longli@linuxonhyperv.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 16:53:48 +02:00
Varun Prakash 1bfb3a070b scsi: target: cxgbit: Unmap DMA buffer before calling target_execute_cmd()
commit 6ecdafaec79d4b3388a5b017245f23a0ff9d852d upstream.

Instead of calling dma_unmap_sg() after completing WRITE I/O, call
dma_unmap_sg() before calling target_execute_cmd() to sync the DMA buffer.

Link: https://lore.kernel.org/r/1618403949-3443-1-git-send-email-varun@chelsio.com
Cc: <stable@vger.kernel.org> # 5.4+
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 16:53:48 +02:00
Arnaldo Carvalho de Melo 00d38f7031 perf llvm: Return -ENOMEM when asprintf() fails
[ Upstream commit c435c166dcf526ac827bc964d82cc0d5e7a1fd0b ]

Zhihao sent a patch but it made llvm__compile_bpf() return what
asprintf() returns on error, which is just -1, but since this function
returns -errno, fix it by returning -ENOMEM for this case instead.

Fixes: cb76371441 ("perf llvm: Allow passing options to llc ...")
Fixes: 5eab5a7ee0 ("perf llvm: Display eBPF compiling command ...")
Reported-by: Hulk Robot <hulkci@huawei.com>
Reported-by: Zhihao Cheng <chengzhihao1@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Yu Kuai <yukuai3@huawei.com>
Cc: clang-built-linux@googlegroups.com
Link: http://lore.kernel.org/lkml/20210609115945.2193194-1-chengzhihao1@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:48 +02:00
Dave Hansen b00da826ca selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random
[ Upstream commit f36ef407628835a7d7fb3d235b1f1aac7022d9a3 ]

Patch series "selftests/vm/pkeys: Bug fixes and a new test".

There has been a lot of activity on the x86 front around the XSAVE
architecture which is used to context-switch processor state (among other
things).  In addition, AMD has recently joined the protection keys club by
adding processor support for PKU.

The AMD implementation helped uncover a kernel bug around the PKRU "init
state", which actually applied to Intel's implementation but was just
harder to hit.  This series adds a test which is expected to help find
this class of bug both on AMD and Intel.  All the work around pkeys on x86
also uncovered a few bugs in the selftest.

This patch (of 4):

The "random" pkey allocation code currently does the good old:

	srand((unsigned int)time(NULL));

*But*, it unfortunately does this on every random pkey allocation.

There may be thousands of these a second.  time() has a one second
resolution.  So, each time alloc_random_pkey() is called, the PRNG is
*RESET* to time().  This is nasty.  Normally, if you do:

	srand(<ANYTHING>);
	foo = rand();
	bar = rand();

You'll be quite guaranteed that 'foo' and 'bar' are different.  But, if
you do:

	srand(1);
	foo = rand();
	srand(1);
	bar = rand();

You are quite guaranteed that 'foo' and 'bar' are the *SAME*.  The recent
"fix" effectively forced the test case to use the same "random" pkey for
the whole test, unless the test run crossed a second boundary.

Only run srand() once at program startup.

This explains some very odd and persistent test failures I've been seeing.

Link: https://lkml.kernel.org/r/20210611164153.91B76FB8@viggo.jf.intel.com
Link: https://lkml.kernel.org/r/20210611164155.192D00FF@viggo.jf.intel.com
Fixes: 6e373263ce07 ("selftests/vm/pkeys: fix alloc_random_pkey() to make it really random")
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Sandipan Das <sandipan@linux.ibm.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Suchanek <msuchanek@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:47 +02:00
Miaohe Lin 49496327c2 mm/z3fold: fix potential memory leak in z3fold_destroy_pool()
[ Upstream commit dac0d1cfda56472378d330b1b76b9973557a7b1d ]

There is a memory leak in z3fold_destroy_pool() as it forgets to
free_percpu pool->unbuddied.  Call free_percpu for pool->unbuddied to fix
this issue.

Link: https://lkml.kernel.org/r/20210619093151.1492174-6-linmiaohe@huawei.com
Fixes: d30561c56f ("z3fold: use per-cpu unbuddied lists")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: Hillf Danton <hdanton@sina.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:47 +02:00
Miaohe Lin 4b515fa948 mm/huge_memory.c: don't discard hugepage if other processes are mapping it
[ Upstream commit babbbdd08af98a59089334eb3effbed5a7a0cf7f ]

If other processes are mapping any other subpages of the hugepage, i.e.
in pte-mapped thp case, page_mapcount() will return 1 incorrectly.  Then
we would discard the page while other processes are still mapping it.  Fix
it by using total_mapcount() which can tell whether other processes are
still mapping it.

Link: https://lkml.kernel.org/r/20210511134857.1581273-6-linmiaohe@huawei.com
Fixes: b8d3c4c300 ("mm/huge_memory.c: don't split THP page when MADV_FREE syscall is called")
Reviewed-by: Yang Shi <shy828301@gmail.com>
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:47 +02:00
Alex Williamson 01be55fb26 vfio/pci: Handle concurrent vma faults
[ Upstream commit 6a45ece4c9af473555f01f0f8b97eba56e3c7d0d ]

io_remap_pfn_range() will trigger a BUG_ON if it encounters a
populated pte within the mapping range.  This can occur because we map
the entire vma on fault and multiple faults can be blocked behind the
vma_lock.  This leads to traces like the one reported below.

We can use our vma_list to test whether a given vma is mapped to avoid
this issue.

[ 1591.733256] kernel BUG at mm/memory.c:2177!
[ 1591.739515] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[ 1591.747381] Modules linked in: vfio_iommu_type1 vfio_pci vfio_virqfd vfio pv680_mii(O)
[ 1591.760536] CPU: 2 PID: 227 Comm: lcore-worker-2 Tainted: G O 5.11.0-rc3+ #1
[ 1591.770735] Hardware name:  , BIOS HixxxxFPGA 1P B600 V121-1
[ 1591.778872] pstate: 40400009 (nZcv daif +PAN -UAO -TCO BTYPE=--)
[ 1591.786134] pc : remap_pfn_range+0x214/0x340
[ 1591.793564] lr : remap_pfn_range+0x1b8/0x340
[ 1591.799117] sp : ffff80001068bbd0
[ 1591.803476] x29: ffff80001068bbd0 x28: 0000042eff6f0000
[ 1591.810404] x27: 0000001100910000 x26: 0000001300910000
[ 1591.817457] x25: 0068000000000fd3 x24: ffffa92f1338e358
[ 1591.825144] x23: 0000001140000000 x22: 0000000000000041
[ 1591.832506] x21: 0000001300910000 x20: ffffa92f141a4000
[ 1591.839520] x19: 0000001100a00000 x18: 0000000000000000
[ 1591.846108] x17: 0000000000000000 x16: ffffa92f11844540
[ 1591.853570] x15: 0000000000000000 x14: 0000000000000000
[ 1591.860768] x13: fffffc0000000000 x12: 0000000000000880
[ 1591.868053] x11: ffff0821bf3d01d0 x10: ffff5ef2abd89000
[ 1591.875932] x9 : ffffa92f12ab0064 x8 : ffffa92f136471c0
[ 1591.883208] x7 : 0000001140910000 x6 : 0000000200000000
[ 1591.890177] x5 : 0000000000000001 x4 : 0000000000000001
[ 1591.896656] x3 : 0000000000000000 x2 : 0168044000000fd3
[ 1591.903215] x1 : ffff082126261880 x0 : fffffc2084989868
[ 1591.910234] Call trace:
[ 1591.914837]  remap_pfn_range+0x214/0x340
[ 1591.921765]  vfio_pci_mmap_fault+0xac/0x130 [vfio_pci]
[ 1591.931200]  __do_fault+0x44/0x12c
[ 1591.937031]  handle_mm_fault+0xcc8/0x1230
[ 1591.942475]  do_page_fault+0x16c/0x484
[ 1591.948635]  do_translation_fault+0xbc/0xd8
[ 1591.954171]  do_mem_abort+0x4c/0xc0
[ 1591.960316]  el0_da+0x40/0x80
[ 1591.965585]  el0_sync_handler+0x168/0x1b0
[ 1591.971608]  el0_sync+0x174/0x180
[ 1591.978312] Code: eb1b027f 540000c0 f9400022 b4fffe02 (d4210000)

Fixes: 11c4cd07ba11 ("vfio-pci: Fault mmaps to enable vma tracking")
Reported-by: Zeng Tao <prime.zeng@hisilicon.com>
Suggested-by: Zeng Tao <prime.zeng@hisilicon.com>
Link: https://lore.kernel.org/r/162497742783.3883260.3282953006487785034.stgit@omen
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:47 +02:00
Pali Rohár 9db3800eea arm64: dts: marvell: armada-37xx: Fix reg for standard variant of UART
[ Upstream commit 2cbfdedef39fb5994b8f1e1df068eb8440165975 ]

UART1 (standard variant with DT node name 'uart0') has register space
0x12000-0x12018 and not whole size 0x200. So fix also this in example.

Signed-off-by: Pali Rohár <pali@kernel.org>
Fixes: c737abc193 ("arm64: dts: marvell: Fix A37xx UART0 register size")
Link: https://lore.kernel.org/r/20210624224909.6350-6-pali@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:47 +02:00
Pali Rohár b857ff866c serial: mvebu-uart: correctly calculate minimal possible baudrate
[ Upstream commit deeaf963569a0d9d1b08babb771f61bb501a5704 ]

For default (x16) scheme which is currently used by mvebu-uart.c driver,
maximal divisor of UART base clock is 1023*16. Therefore there is limit for
minimal supported baudrate. This change calculate it correctly and prevents
setting invalid divisor 0 into hardware registers.

Signed-off-by: Pali Rohár <pali@kernel.org>
Fixes: 68a0db1d7d ("serial: mvebu-uart: add function to change baudrate")
Link: https://lore.kernel.org/r/20210624224909.6350-4-pali@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:47 +02:00
Pali Rohár 7900c98108 serial: mvebu-uart: do not allow changing baudrate when uartclk is not available
[ Upstream commit ecd6b010d81f97b06b2f64d2d4f50ebf5acddaa9 ]

Testing mvuart->clk for non-error is not enough as mvuart->clk may contain
valid clk pointer but when clk_prepare_enable(mvuart->clk) failed then
port->uartclk is zero.

When mvuart->clk is not available then port->uartclk is zero too.

Parent clock rate port->uartclk is needed to calculate UART clock divisor
and without it is not possible to change baudrate.

So fix test condition when it is possible to change baudrate.

Signed-off-by: Pali Rohár <pali@kernel.org>
Fixes: 68a0db1d7d ("serial: mvebu-uart: add function to change baudrate")
Link: https://lore.kernel.org/r/20210624224909.6350-3-pali@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:47 +02:00
Nicholas Piggin 44d36a79dc powerpc: Offline CPU in stop_this_cpu()
[ Upstream commit bab26238bbd44d5a4687c0a64fd2c7f2755ea937 ]

printk_safe_flush_on_panic() has special lock breaking code for the case
where we panic()ed with the console lock held. It relies on panic IPI
causing other CPUs to mark themselves offline.

Do as most other architectures do.

This effectively reverts commit de6e5d3841 ("powerpc: smp_send_stop do
not offline stopped CPUs"), unfortunately it may result in some false
positive warnings, but the alternative is more situations where we can
crash without getting messages out.

Fixes: de6e5d3841 ("powerpc: smp_send_stop do not offline stopped CPUs")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210623041245.865134-1-npiggin@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:47 +02:00
Christophe JAILLET 3189d97493 leds: ktd2692: Fix an error handling path
[ Upstream commit ee78b9360e14c276f5ceaa4a0d06f790f04ccdad ]

In 'ktd2692_parse_dt()', if an error occurs after a successful
'regulator_enable()' call, we should call 'regulator_enable()'.

This is the same in 'ktd2692_probe()', if an error occurs after a
successful 'ktd2692_parse_dt()' call.

Instead of adding 'regulator_enable()' in several places, implement a
resource managed solution and simplify the remove function accordingly.

Fixes: b7da8c5c72 ("leds: Add ktd2692 flash LED driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:47 +02:00
Zhen Lei 95288e28c7 leds: as3645a: Fix error return code in as3645a_parse_node()
[ Upstream commit 96a30960a2c5246c8ffebe8a3c9031f9df094d97 ]

Return error code -ENODEV rather than '0' when the indicator node can not
be found.

Fixes: a56ba8fbcb ("media: leds: as3645a: Add LED flash class driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:46 +02:00
Chung-Chiang Cheng f0acb12b98 configfs: fix memleak in configfs_release_bin_file
[ Upstream commit 3c252b087de08d3cb32468b54a158bd7ad0ae2f7 ]

When reading binary attributes in progress, buffer->bin_buffer is setup in
configfs_read_bin_file() but never freed.

Fixes: 03607ace80 ("configfs: implement binary attributes")
Signed-off-by: Chung-Chiang Cheng <cccheng@synology.com>
[hch: move the vfree rather than duplicating it]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:46 +02:00
Codrin Ciubotariu 2993c1f9d7 ASoC: atmel-i2s: Fix usage of capture and playback at the same time
[ Upstream commit 3b7961a326f8a7e03f54a19f02fedae8d488b80f ]

For both capture and playback streams to work at the same time, only the
needed values from a register need to be updated. Also, clocks should be
enabled only when the first stream is started and stopped when there is no
running stream.

Fixes: b543e467d1 ("ASoC: atmel-i2s: add driver for the new Atmel I2S controller")
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20210618150741.401739-2-codrin.ciubotariu@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:46 +02:00
Marek Szyprowski 0e0ee2cee6 extcon: max8997: Add missing modalias string
[ Upstream commit dc11fc2991e9efbceef93912b83e333d2835fb19 ]

The platform device driver name is "max8997-muic", so advertise it
properly in the modalias string. This fixes automated module loading when
this driver is compiled as a module.

Fixes: b76668ba8a ("Extcon: add MAX8997 extcon driver")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:46 +02:00
Stephan Gerhold 4efa7f728b extcon: sm5502: Drop invalid register write in sm5502_reg_data
[ Upstream commit d25b224f8e5507879b36a769a6d1324cf163466c ]

When sm5502_init_dev_type() iterates over sm5502_reg_data to
initialize the registers it is limited by ARRAY_SIZE(sm5502_reg_data).
There is no need to add another empty element to sm5502_reg_data.

Having the additional empty element in sm5502_reg_data will just
result in writing 0xff to register 0x00, which does not really
make sense.

Fixes: 914b881f94 ("extcon: sm5502: Add support new SM5502 extcon device driver")
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:46 +02:00
Christophe JAILLET b1c88a56ef phy: ti: dm816x: Fix the error handling path in 'dm816x_usb_phy_probe()
[ Upstream commit f7eedcb8539ddcbb6fe7791f1b4ccf43f905c72f ]

Add an error handling path in the probe to release some resources, as
already done in the remove function.

Fixes: 609adde838 ("phy: Add a driver for dm816x USB PHY")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/ac5136881f6bdec50be19b3bf73b3bc1b15ef1f1.1622898974.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:46 +02:00
Kunihiko Hayashi 8bc305d146 phy: uniphier-pcie: Fix updating phy parameters
[ Upstream commit 4a90bbb478dbf18ecdec9dcf8eb708e319d24264 ]

The current driver uses a value from register TEST_O as the original
value for register TEST_I, though, the value is overwritten by "param",
so there is a bug that the original value isn't no longer used.

The value of TEST_O[7:0] should be masked with "mask", replaced with
"param", and placed in the bitfield TESTI_DAT_MASK as new TEST_I value.

Fixes: c6d9b13241 ("phy: socionext: add PCIe PHY driver support")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/1623037842-19363-1-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:46 +02:00
Richard Fitzgerald 142ab7ff42 soundwire: stream: Fix test for DP prepare complete
[ Upstream commit 3d3e88e336338834086278236d42039f3cde50e1 ]

In sdw_prep_deprep_slave_ports(), after the wait_for_completion()
the DP prepare status register is read. If this indicates that the
port is now prepared, the code should continue with the port setup.
It is irrelevant whether the wait_for_completion() timed out if the
port is now ready.

The previous implementation would always fail if the
wait_for_completion() timed out, even if the port was reporting
successful prepare.

This patch also fixes a minor bug where the return from sdw_read()
was not checked for error - any error code with LSBits clear could
be misinterpreted as a successful port prepare.

Fixes: 79df15b7d3 ("soundwire: Add helpers for ports operations")
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210618144745.30629-1-rf@opensource.cirrus.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:45 +02:00
Zhen Lei 5ec1c609d2 scsi: mpt3sas: Fix error return value in _scsih_expander_add()
[ Upstream commit d6c2ce435ffe23ef7f395ae76ec747414589db46 ]

When an expander does not contain any 'phys', an appropriate error code -1
should be returned, as done elsewhere in this function. However, we
currently do not explicitly assign this error code to 'rc'. As a result, 0
was incorrectly returned.

Link: https://lore.kernel.org/r/20210514081300.6650-1-thunder.leizhen@huawei.com
Fixes: f92363d123 ("[SCSI] mpt3sas: add new driver supporting 12GB SAS")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:45 +02:00
Yang Yingliang 35a4e0aee8 mtd: rawnand: marvell: add missing clk_disable_unprepare() on error in marvell_nfc_resume()
[ Upstream commit ae94c49527aa9bd3b563349adc4b5617747ca6bd ]

Add clk_disable_unprepare() on error path in marvell_nfc_resume().

Fixes: bd9c3f9b3c ("mtd: rawnand: marvell: add suspend and resume hooks")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210601125814.3260364-1-yangyingliang@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:45 +02:00
Geert Uytterhoeven b1d1cafd60 of: Fix truncation of memory sizes on 32-bit platforms
[ Upstream commit 2892d8a00d23d511a0591ac4b2ff3f050ae1f004 ]

Variable "size" has type "phys_addr_t", which can be either 32-bit or
64-bit on 32-bit systems, while "unsigned long" is always 32-bit on
32-bit systems.  Hence the cast in

    (unsigned long)size / SZ_1M

may truncate a 64-bit size to 32-bit, as casts have a higher operator
precedence than divisions.

Fix this by inverting the order of the cast and division, which should
be safe for memory blocks smaller than 4 PiB.  Note that the division is
actually a shift, as SZ_1M is a power-of-two constant, hence there is no
need to use div_u64().

While at it, use "%lu" to format "unsigned long".

Fixes: e8d9d1f548 ("drivers: of: add initialization code for static reserved memory")
Fixes: 3f0c820664 ("drivers: of: add initialization code for dynamic reserved memory")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/4a1117e72d13d26126f57be034c20dac02f1e915.1623835273.git.geert+renesas@glider.be
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:45 +02:00
Richard Fitzgerald be192ab7b4 ASoC: cs42l42: Correct definition of CS42L42_ADC_PDN_MASK
[ Upstream commit fac165f22ac947b55407cd3a60a2a9824f905235 ]

The definition of CS42L42_ADC_PDN_MASK was incorrectly defined
as the HP_PDN bit.

Fixes: 2c394ca796 ("ASoC: Add support for CS42L42 codec")
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210616135604.19363-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:45 +02:00
Jonathan Cameron fe9452c9d7 iio: prox: isl29501: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 92babc9938ebbf4050f2fba774836f7edc16a570 ]

Add __aligned(8) to ensure the buffer passed to
iio_push_to_buffers_with_timestamp() is suitable for the naturally
aligned timestamp that will be inserted.

Here an explicit structure is not used, because the holes would
necessitate the addition of an explict memset(), to avoid a kernel
data leak, making for a less minimal fix.

Fixes: 1c28799257 ("iio: light: isl29501: Add support for the ISL29501 ToF sensor.")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Mathieu Othacehe <m.othacehe@gmail.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-9-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:45 +02:00
Jonathan Cameron da8ef748fe iio: light: vcnl4035: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit ec90b52c07c0403a6db60d752484ec08d605ead0 ]

Add __aligned(8) to ensure the buffer passed to
iio_push_to_buffers_with_timestamp() is suitable for the naturally
aligned timestamp that will be inserted.

Here an explicit structure is not used, because the holes would
necessitate the addition of an explict memset(), to avoid a potential
kernel data leak, making for a less minimal fix.

Fixes: 55707294c4 ("iio: light: Add support for vishay vcnl4035")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Parthiban Nallathambi <pn@denx.de>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-8-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:45 +02:00
Maciej W. Rozycki 84c045475e serial: 8250: Actually allow UPF_MAGIC_MULTIPLIER baud rates
[ Upstream commit 78bcae8616ac277d6cb7f38e211493948ed73e30 ]

Support for magic baud rate divisors of 32770 and 32769 used with SMSC
Super I/O chips for extra baud rates of 230400 and 460800 respectively
where base rate is 115200[1] has been added around Linux 2.5.64, which
predates our repo history, but the origin could be identified as commit
2a717aad772f ("Merge with Linux 2.5.64.") with the old MIPS/Linux repo
also at: <git://git.kernel.org/pub/scm/linux/kernel/git/ralf/linux.git>.

Code that is now in `serial8250_do_get_divisor' was added back then to
`serial8250_get_divisor', but that code would only ever trigger if one
of the higher baud rates was actually requested, and that cannot ever
happen, because the earlier call to `serial8250_get_baud_rate' never
returns them.  This is because it calls `uart_get_baud_rate' with the
maximum requested being the base rate, that is clk/16 or 115200 for SMSC
chips at their nominal clock rate.

Fix it then and allow UPF_MAGIC_MULTIPLIER baud rates to be selected, by
requesting the maximum baud rate of clk/4 rather than clk/16 if the flag
has been set.  Also correct the minimum baud rate, observing that these
ports only support actual (non-magic) divisors of up to 32767 only.

References:

[1] "FDC37M81x, PC98/99 Compliant Enhanced Super I/O Controller with
    Keyboard/Mouse Wake-Up", Standard Microsystems Corporation, Rev.
    03/27/2000, Table 31 - "Baud Rates", p. 77

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2105190412280.29169@angie.orcam.me.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:44 +02:00
Sergio Paracuellos eea7304dc2 staging: mt7621-dts: fix pci address for PCI memory range
[ Upstream commit 5b4f167ef3555ec4c334a8dc89c1b44bb2c6bff5 ]

Driver code call 'devm_of_pci_get_host_bridge_resources'
to get resources and properly fill 'bridge->windows' and
'bridge->dma_ranges'. After parsing the ranges and store
as resources, at the end it makes a call to pci function
'pci_add_resource_offset' to set the offset for the
memory resource. To calculate offset, resource start address
subtracts pci address of the range. MT7621 does not need
any offset for the memory resource. Moreover, setting an
offset got into 'WARN_ON' calls from pci devices driver code.
Until now memory range pci_addr was being '0x00000000' and
res->start is '0x60000000' but becase pci controller driver
was manually setting resources and adding them using pci function
'pci_add_resource' where a zero is passed as offset, things
was properly working. Since PCI_IOBASE is defined now for
ralink we don't set nothing manually anymore so we have to
properly fix PCI address for this range to make things work
and the new pci address must be set to '0x60000000'. Doing
in this way the subtract result obtain zero as offset
and pci device driver code properly works.

Fixes: d59578da2b ("staging: mt7621-dts: add dts files")
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20210614100617.28753-4-sergio.paracuellos@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:44 +02:00
Pavel Skripkin ce2588dc7f staging: rtl8712: fix memory leak in rtl871x_load_fw_cb
[ Upstream commit e02a3b945816a77702a2769a70ef5f9b06e49d54 ]

There is a leak in rtl8712 driver.
The problem was in non-freed adapter data if
firmware load failed.

This leak can be reproduced with this code:
https://syzkaller.appspot.com/text?tag=ReproC&x=16612f02d00000,
Autoload must fail (to not hit memory leak reported by syzkaller)

There are 2 possible ways how rtl871x_load_fw_cb() and
r871xu_dev_remove() can be called (in case of fw load error).

1st case:
	r871xu_dev_remove() then rtl871x_load_fw_cb()

	In this case r871xu_dev_remove() will wait for
	completion and then will jump to the end, because
	rtl871x_load_fw_cb() set intfdata to NULL:

	if (pnetdev) {
		struct _adapter *padapter = netdev_priv(pnetdev);

		/* never exit with a firmware callback pending */
		wait_for_completion(&padapter->rtl8712_fw_ready);
		pnetdev = usb_get_intfdata(pusb_intf);
		usb_set_intfdata(pusb_intf, NULL);
		if (!pnetdev)
			goto firmware_load_fail;

		... clean up code here ...
	}

2nd case:
	rtl871x_load_fw_cb() then r871xu_dev_remove()

	In this case pnetdev (from code snippet above) will
	be zero (because rtl871x_load_fw_cb() set it to NULL)
	And clean up code won't be executed again.

So, in all cases we need to free adapted data in rtl871x_load_fw_cb(),
because disconnect function cannot take care of it. And there won't be
any race conditions, because complete() call happens after setting
intfdata to NULL.

In previous patch I moved out free_netdev() from r8712_free_drv_sw()
and that's why now it's possible to free adapter data and then call
complete.

Fixes: 8c213fa591 ("staging: r8712u: Use asynchronous firmware loading")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/81e68fe0194499cc2e7692d35bc4dcf167827d8f.1623620630.git.paskripkin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:44 +02:00
Pavel Skripkin 92538bf2ee staging: rtl8712: remove redundant check in r871xu_drv_init
[ Upstream commit 69d998f1e552f6e2e7b55f5058ce1ac7a72903f9 ]

padapter->dvobj_init is initialized rigth before
initialization check. There is no need for any
branching here.

Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/d367e5f39f22af44c545f8710cc18fb00f10e66c.1623620630.git.paskripkin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:44 +02:00
Dan Carpenter 9f0800bd93 staging: gdm724x: check for overflow in gdm_lte_netif_rx()
[ Upstream commit 7002b526f4ff1f6da34356e67085caafa6be383a ]

This code assumes that "len" is at least 62 bytes, but we need a check
to prevent a read overflow.

Fixes: 61e1210476 ("staging: gdm7240: adding LTE USB driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YMcoTPsCYlhh2TQo@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:44 +02:00
Dan Carpenter 4500b944d7 staging: gdm724x: check for buffer overflow in gdm_lte_multi_sdu_pkt()
[ Upstream commit 4a36e160856db8a8ddd6a3d2e5db5a850ab87f82 ]

There needs to be a check to verify that we don't read beyond the end
of "buf".  This function is called from do_rx().  The "buf" is the USB
transfer_buffer and "len" is "urb->actual_length".

Fixes: 61e1210476 ("staging: gdm7240: adding LTE USB driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YMcnl4zCwGWGDVMG@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:44 +02:00
Jonathan Cameron f848baa0a5 iio: magn: rm3100: Fix alignment of buffer in iio_push_to_buffers_with_timestamp()
[ Upstream commit b8f939fd20690623cb24845a563e7bc1e4a21482 ]

Add __aligned(8) to ensure the buffer passed to
iio_push_to_buffers_with_timestamp() is suitable for the naturally
aligned timestamp that will be inserted.

Here an explicit structure is not used, because this buffer is used in
a non-trivial way for data repacking.

Fixes: 121354b2ec ("iio: magnetometer: Add driver support for PNI RM3100")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Song Qiang <songqiang1304521@gmail.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-6-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:43 +02:00
Jonathan Cameron 26aa12ef64 iio: adc: ti-ads8688: Fix alignment of buffer in iio_push_to_buffers_with_timestamp()
[ Upstream commit 61fa5dfa5f52806f5ce37a0ba5712c271eb22f98 ]

Add __aligned(8) to ensure the buffer passed to
iio_push_to_buffers_with_timestamp() is suitable for the naturally
aligned timestamp that will be inserted.

Fixes: f214ff521f ("iio: ti-ads8688: Update buffer allocation for timestamps")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-5-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:43 +02:00
Jonathan Cameron 9275b1eaf0 iio: adc: mxs-lradc: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 6a6be221b8bd561b053f0701ec752a5ed9007f69 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Add a comment on why the buffer is the size it is as not immediately
obvious.

Found during an audit of all calls of this function.

Fixes: 6dd112b9f8 ("iio: adc: mxs-lradc: Add support for ADC driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Andreas Klinger <ak@it-klinger.de>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-4-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:43 +02:00
Jonathan Cameron a79c9b382b iio: adc: hx711: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit afe2a789fbf7acd1a05407fc7839cc08d23825e3 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of this function.

Fixes: d3bf60450d ("iio: hx711: add triggered buffer support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Andreas Klinger <ak@it-klinger.de>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-3-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:43 +02:00
Jonathan Cameron 73e804beb7 iio: adc: at91-sama5d2: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 8f884758966259fa8c50c137ac6d4ce9bb7859db ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of this function.

Fixes: 5e1a1da0f8 ("iio: adc: at91-sama5d2_adc: add hw trigger and buffer support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-2-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:43 +02:00
Alexandru Ardelean 02d3b52f67 iio: at91-sama5d2_adc: remove usage of iio_priv_to_dev() helper
[ Upstream commit ebf35aad0baa05823df31fda42df4b67f72e6e72 ]

We may want to get rid of the iio_priv_to_dev() helper. The reason is that
we will hide some of the members of the iio_dev structure (to prevent
drivers from accessing them directly), and that will also mean hiding the
implementation of the iio_priv_to_dev() helper inside the IIO core.

Hiding the implementation of iio_priv_to_dev() implies that some fast-paths
may not be fast anymore, so a general idea is to try to get rid of the
iio_priv_to_dev() altogether.
The iio_priv() helper won't be affected by the rework, as the iio_dev
struct will keep a reference to the private information.

For this driver, not using iio_priv_to_dev(), means reworking some paths to
pass the iio device and using iio_priv() to access the private information,
and also keeping a reference to the iio device for some quirky paths.

One [quirky] path is the at91_adc_workq_handler() which requires the IIO
device & the state struct to push to buffers.
Since this requires the back-ref to the IIO device, the
at91_adc_touch_pos() also uses it. This simplifies the patch a bit. The
information required in this function is mostly for debugging purposes.
Replacing it with a reference to the IIO device would have been a slightly
bigger change, which may not be worth it (for just the debugging purpose
and given that we need the back-ref to the IIO device anyway).

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:43 +02:00
Andy Shevchenko ac7943a7f4 eeprom: idt_89hpesx: Restore printing the unsupported fwnode name
[ Upstream commit e0db3deea73ba418bf5dc21f5a4e32ca87d16dde ]

When iterating over child firmware nodes restore printing the name of ones
that are not supported.

While at it, refactor loop body to clearly show that we stop at the first match.

Fixes: db15d73e5f ("eeprom: idt_89hpesx: Support both ACPI and OF probing")
Cc: Huy Duong <qhuyduong@hotmail.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210607221757.81465-2-andy.shevchenko@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:43 +02:00
Andy Shevchenko 9fc3fbc3af eeprom: idt_89hpesx: Put fwnode in matching case during ->probe()
[ Upstream commit 3f6ee1c095156a74ab2df605af13020f1ce3e600 ]

device_get_next_child_node() bumps a reference counting of a returned variable.
We have to balance it whenever we return to the caller.

Fixes: db15d73e5f ("eeprom: idt_89hpesx: Support both ACPI and OF probing")
Cc: Huy Duong <qhuyduong@hotmail.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210607221757.81465-1-andy.shevchenko@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:43 +02:00
Clément Lassieur d7e33cc478 usb: dwc2: Don't reset the core after setting turnaround time
[ Upstream commit aafe93516b8567ab5864e1f4cd3eeabc54fb0e5a ]

Every time the hub signals a reset while we (device) are hsotg->connected,
dwc2_hsotg_core_init_disconnected() is called, which in turn calls
dwc2_hs_phy_init().

GUSBCFG.USBTrdTim is cleared upon Core Soft Reset, so if
hsotg->params.phy_utmi_width is 8-bit, the value of GUSBCFG.USBTrdTim (the
default one: 0x5, corresponding to 16-bit) is always different from
hsotg->params.phy_utmi_width, thus dwc2_core_reset() is called every
time (usbcfg != usbcfg_old), which causes 2 issues:

1) The call to dwc2_core_reset() does another reset 300us after the initial
Chirp K of the first reset (which should last at least Tuch = 1ms), and
messes up the High-speed Detection Handshake: both hub and device drive
current into the D+ and D- lines at the same time.

2) GUSBCFG.USBTrdTim is cleared by the second reset, so its value is always
the default one (0x5).

Setting GUSBCFG.USBTrdTim after the potential call to dwc2_core_reset()
fixes both issues.  It is now set even when select_phy is false because the
cost of the Core Soft Reset is removed.

Fixes: 1e868545f2 ("usb: dwc2: gadget: Move gadget phy init into core phy init")
Signed-off-by: Clément Lassieur <clement@lassieur.org>
Link: https://lore.kernel.org/r/20210603155921.940651-1-clement@lassieur.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:42 +02:00
Andrew Gabbasov a95bbfe690 usb: gadget: f_fs: Fix setting of device and driver data cross-references
[ Upstream commit ecfbd7b9054bddb12cea07fda41bb3a79a7b0149 ]

FunctionFS device structure 'struct ffs_dev' and driver data structure
'struct ffs_data' are bound to each other with cross-reference pointers
'ffs_data->private_data' and 'ffs_dev->ffs_data'. While the first one
is supposed to be valid through the whole life of 'struct ffs_data'
(and while 'struct ffs_dev' exists non-freed), the second one is cleared
in 'ffs_closed()' (called from 'ffs_data_reset()' or the last
'ffs_data_put()'). This can be called several times, alternating in
different order with 'ffs_free_inst()', that, if possible, clears
the other cross-reference.

As a result, different cases of these calls order may leave stale
cross-reference pointers, used when the pointed structure is already
freed. Even if it occasionally doesn't cause kernel crash, this error
is reported by KASAN-enabled kernel configuration.

For example, the case [last 'ffs_data_put()' - 'ffs_free_inst()'] was
fixed by commit cdafb6d8b8 ("usb: gadget: f_fs: Fix use-after-free in
ffs_free_inst").

The other case ['ffs_data_reset()' - 'ffs_free_inst()' - 'ffs_data_put()']
now causes KASAN reported error [1], when 'ffs_data_reset()' clears
'ffs_dev->ffs_data', then 'ffs_free_inst()' frees the 'struct ffs_dev',
but can't clear 'ffs_data->private_data', which is then accessed
in 'ffs_closed()' called from 'ffs_data_put()'. This happens since
'ffs_dev->ffs_data' reference is cleared too early.

Moreover, one more use case, when 'ffs_free_inst()' is called immediately
after mounting FunctionFS device (that is before the descriptors are
written and 'ffs_ready()' is called), and then 'ffs_data_reset()'
or 'ffs_data_put()' is called from accessing "ep0" file or unmounting
the device. This causes KASAN error report like [2], since
'ffs_dev->ffs_data' is not yet set when 'ffs_free_inst()' can't properly
clear 'ffs_data->private_data', that is later accessed to freed structure.

Fix these (and may be other) cases of stale pointers access by moving
setting and clearing of the mentioned cross-references to the single
places, setting both of them when 'struct ffs_data' is created and
bound to 'struct ffs_dev', and clearing both of them when one of the
structures is destroyed. It seems convenient to make this pointer
initialization and structures binding in 'ffs_acquire_dev()' and
make pointers clearing in 'ffs_release_dev()'. This required some
changes in these functions parameters and return types.

Also, 'ffs_release_dev()' calling requires some cleanup, fixing minor
issues, like (1) 'ffs_release_dev()' is not called if 'ffs_free_inst()'
is called without unmounting the device, and "release_dev" callback
is not called at all, or (2) "release_dev" callback is called before
"ffs_closed" callback on unmounting, which seems to be not correctly
nested with "acquire_dev" and "ffs_ready" callbacks.
Make this cleanup togther with other mentioned 'ffs_release_dev()' changes.

[1]
==================================================================
root@rcar-gen3:~# mkdir /dev/cfs
root@rcar-gen3:~# mkdir /dev/ffs
root@rcar-gen3:~# modprobe libcomposite
root@rcar-gen3:~# mount -t configfs none /dev/cfs
root@rcar-gen3:~# mkdir /dev/cfs/usb_gadget/g1
root@rcar-gen3:~# mkdir /dev/cfs/usb_gadget/g1/functions/ffs.ffs
[   64.340664] file system registered
root@rcar-gen3:~# mount -t functionfs ffs /dev/ffs
root@rcar-gen3:~# cd /dev/ffs
root@rcar-gen3:/dev/ffs# /home/root/ffs-test
ffs-test: info: ep0: writing descriptors (in v2 format)
[   83.181442] read descriptors
[   83.186085] read strings
ffs-test: info: ep0: writing strings
ffs-test: dbg:  ep1: starting
ffs-test: dbg:  ep2: starting
ffs-test: info: ep1: starts
ffs-test: info: ep2: starts
ffs-test: info: ep0: starts

^C
root@rcar-gen3:/dev/ffs# cd /home/root/
root@rcar-gen3:~# rmdir /dev/cfs/usb_gadget/g1/functions/ffs.ffs
[   98.935061] unloading
root@rcar-gen3:~# umount /dev/ffs
[  102.734301] ==================================================================
[  102.742059] BUG: KASAN: use-after-free in ffs_release_dev+0x64/0xa8 [usb_f_fs]
[  102.749683] Write of size 1 at addr ffff0004d46ff549 by task umount/2997
[  102.756709]
[  102.758311] CPU: 0 PID: 2997 Comm: umount Not tainted 5.13.0-rc4+ #8
[  102.764971] Hardware name: Renesas Salvator-X board based on r8a77951 (DT)
[  102.772179] Call trace:
[  102.774779]  dump_backtrace+0x0/0x330
[  102.778653]  show_stack+0x20/0x2c
[  102.782152]  dump_stack+0x11c/0x1ac
[  102.785833]  print_address_description.constprop.0+0x30/0x274
[  102.791862]  kasan_report+0x14c/0x1c8
[  102.795719]  __asan_report_store1_noabort+0x34/0x58
[  102.800840]  ffs_release_dev+0x64/0xa8 [usb_f_fs]
[  102.805801]  ffs_fs_kill_sb+0x50/0x84 [usb_f_fs]
[  102.810663]  deactivate_locked_super+0xa0/0xf0
[  102.815339]  deactivate_super+0x98/0xac
[  102.819378]  cleanup_mnt+0xd0/0x1b0
[  102.823057]  __cleanup_mnt+0x1c/0x28
[  102.826823]  task_work_run+0x104/0x180
[  102.830774]  do_notify_resume+0x458/0x14e0
[  102.835083]  work_pending+0xc/0x5f8
[  102.838762]
[  102.840357] Allocated by task 2988:
[  102.844032]  kasan_save_stack+0x28/0x58
[  102.848071]  kasan_set_track+0x28/0x3c
[  102.852016]  ____kasan_kmalloc+0x84/0x9c
[  102.856142]  __kasan_kmalloc+0x10/0x1c
[  102.860088]  __kmalloc+0x214/0x2f8
[  102.863678]  kzalloc.constprop.0+0x14/0x20 [usb_f_fs]
[  102.868990]  ffs_alloc_inst+0x8c/0x208 [usb_f_fs]
[  102.873942]  try_get_usb_function_instance+0xf0/0x164 [libcomposite]
[  102.880629]  usb_get_function_instance+0x64/0x68 [libcomposite]
[  102.886858]  function_make+0x128/0x1ec [libcomposite]
[  102.892185]  configfs_mkdir+0x330/0x590 [configfs]
[  102.897245]  vfs_mkdir+0x12c/0x1bc
[  102.900835]  do_mkdirat+0x180/0x1d0
[  102.904513]  __arm64_sys_mkdirat+0x80/0x94
[  102.908822]  invoke_syscall+0xf8/0x25c
[  102.912772]  el0_svc_common.constprop.0+0x150/0x1a0
[  102.917891]  do_el0_svc+0xa0/0xd4
[  102.921386]  el0_svc+0x24/0x34
[  102.924613]  el0_sync_handler+0xcc/0x154
[  102.928743]  el0_sync+0x198/0x1c0
[  102.932238]
[  102.933832] Freed by task 2996:
[  102.937144]  kasan_save_stack+0x28/0x58
[  102.941181]  kasan_set_track+0x28/0x3c
[  102.945128]  kasan_set_free_info+0x28/0x4c
[  102.949435]  ____kasan_slab_free+0x104/0x118
[  102.953921]  __kasan_slab_free+0x18/0x24
[  102.958047]  slab_free_freelist_hook+0x148/0x1f0
[  102.962897]  kfree+0x318/0x440
[  102.966123]  ffs_free_inst+0x164/0x2d8 [usb_f_fs]
[  102.971075]  usb_put_function_instance+0x84/0xa4 [libcomposite]
[  102.977302]  ffs_attr_release+0x18/0x24 [usb_f_fs]
[  102.982344]  config_item_put+0x140/0x1a4 [configfs]
[  102.987486]  configfs_rmdir+0x3fc/0x518 [configfs]
[  102.992535]  vfs_rmdir+0x114/0x234
[  102.996122]  do_rmdir+0x274/0x2b0
[  102.999617]  __arm64_sys_unlinkat+0x94/0xc8
[  103.004015]  invoke_syscall+0xf8/0x25c
[  103.007961]  el0_svc_common.constprop.0+0x150/0x1a0
[  103.013080]  do_el0_svc+0xa0/0xd4
[  103.016575]  el0_svc+0x24/0x34
[  103.019801]  el0_sync_handler+0xcc/0x154
[  103.023930]  el0_sync+0x198/0x1c0
[  103.027426]
[  103.029020] The buggy address belongs to the object at ffff0004d46ff500
[  103.029020]  which belongs to the cache kmalloc-128 of size 128
[  103.042079] The buggy address is located 73 bytes inside of
[  103.042079]  128-byte region [ffff0004d46ff500, ffff0004d46ff580)
[  103.054236] The buggy address belongs to the page:
[  103.059262] page:0000000021aa849b refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0004d46fee00 pfn:0x5146fe
[  103.070437] head:0000000021aa849b order:1 compound_mapcount:0
[  103.076456] flags: 0x8000000000010200(slab|head|zone=2)
[  103.081948] raw: 8000000000010200 fffffc0013521a80 0000000d0000000d ffff0004c0002300
[  103.090052] raw: ffff0004d46fee00 000000008020001e 00000001ffffffff 0000000000000000
[  103.098150] page dumped because: kasan: bad access detected
[  103.103985]
[  103.105578] Memory state around the buggy address:
[  103.110602]  ffff0004d46ff400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  103.118161]  ffff0004d46ff480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  103.125726] >ffff0004d46ff500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  103.133284]                                               ^
[  103.139120]  ffff0004d46ff580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  103.146679]  ffff0004d46ff600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  103.154238] ==================================================================
[  103.161792] Disabling lock debugging due to kernel taint
[  103.167319] Unable to handle kernel paging request at virtual address 0037801d6000018e
[  103.175406] Mem abort info:
[  103.178457]   ESR = 0x96000004
[  103.181609]   EC = 0x25: DABT (current EL), IL = 32 bits
[  103.187020]   SET = 0, FnV = 0
[  103.190185]   EA = 0, S1PTW = 0
[  103.193417] Data abort info:
[  103.196385]   ISV = 0, ISS = 0x00000004
[  103.200315]   CM = 0, WnR = 0
[  103.203366] [0037801d6000018e] address between user and kernel address ranges
[  103.210611] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[  103.216231] Modules linked in: usb_f_fs libcomposite configfs ath9k_htc led_class mac80211 libarc4 ath9k_common ath9k_hw ath cfg80211 aes_ce_blk sata_rc4
[  103.259233] CPU: 0 PID: 2997 Comm: umount Tainted: G    B             5.13.0-rc4+ #8
[  103.267031] Hardware name: Renesas Salvator-X board based on r8a77951 (DT)
[  103.273951] pstate: 00000005 (nzcv daif -PAN -UAO -TCO BTYPE=--)
[  103.280001] pc : ffs_data_clear+0x138/0x370 [usb_f_fs]
[  103.285197] lr : ffs_data_clear+0x124/0x370 [usb_f_fs]
[  103.290385] sp : ffff800014777a80
[  103.293725] x29: ffff800014777a80 x28: ffff0004d7649c80 x27: 0000000000000000
[  103.300931] x26: ffff800014777fb0 x25: ffff60009aec9394 x24: ffff0004d7649ca4
[  103.308136] x23: 1fffe0009a3d063a x22: dfff800000000000 x21: ffff0004d1e831d0
[  103.315340] x20: e1c000eb00000bb4 x19: ffff0004d1e83000 x18: 0000000000000000
[  103.322545] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[  103.329748] x14: 0720072007200720 x13: 0720072007200720 x12: 1ffff000012ef658
[  103.336952] x11: ffff7000012ef658 x10: 0720072007200720 x9 : ffff800011322648
[  103.344157] x8 : ffff800014777818 x7 : ffff80000977b2c7 x6 : 0000000000000000
[  103.351359] x5 : 0000000000000001 x4 : ffff7000012ef659 x3 : 0000000000000001
[  103.358562] x2 : 0000000000000000 x1 : 1c38001d6000018e x0 : e1c000eb00000c70
[  103.365766] Call trace:
[  103.368235]  ffs_data_clear+0x138/0x370 [usb_f_fs]
[  103.373076]  ffs_data_reset+0x20/0x304 [usb_f_fs]
[  103.377829]  ffs_data_closed+0x1ec/0x244 [usb_f_fs]
[  103.382755]  ffs_fs_kill_sb+0x70/0x84 [usb_f_fs]
[  103.387420]  deactivate_locked_super+0xa0/0xf0
[  103.391905]  deactivate_super+0x98/0xac
[  103.395776]  cleanup_mnt+0xd0/0x1b0
[  103.399299]  __cleanup_mnt+0x1c/0x28
[  103.402906]  task_work_run+0x104/0x180
[  103.406691]  do_notify_resume+0x458/0x14e0
[  103.410823]  work_pending+0xc/0x5f8
[  103.414351] Code: b4000a54 9102f280 12000802 d343fc01 (38f66821)
[  103.420490] ---[ end trace 57b43a50e8244f57 ]---
Segmentation fault
root@rcar-gen3:~#
==================================================================

[2]
==================================================================
root@rcar-gen3:~# mkdir /dev/ffs
root@rcar-gen3:~# modprobe libcomposite
root@rcar-gen3:~#
root@rcar-gen3:~# mount -t configfs none /dev/cfs
root@rcar-gen3:~# mkdir /dev/cfs/usb_gadget/g1
root@rcar-gen3:~# mkdir /dev/cfs/usb_gadget/g1/functions/ffs.ffs
[   54.766480] file system registered
root@rcar-gen3:~# mount -t functionfs ffs /dev/ffs
root@rcar-gen3:~# rmdir /dev/cfs/usb_gadget/g1/functions/ffs.ffs
[   63.197597] unloading
root@rcar-gen3:~# cat /dev/ffs/ep0
cat: read error:[   67.213506] ==================================================================
[   67.222095] BUG: KASAN: use-after-free in ffs_data_clear+0x70/0x370 [usb_f_fs]
[   67.229699] Write of size 1 at addr ffff0004c26e974a by task cat/2994
[   67.236446]
[   67.238045] CPU: 0 PID: 2994 Comm: cat Not tainted 5.13.0-rc4+ #8
[   67.244431] Hardware name: Renesas Salvator-X board based on r8a77951 (DT)
[   67.251624] Call trace:
[   67.254212]  dump_backtrace+0x0/0x330
[   67.258081]  show_stack+0x20/0x2c
[   67.261579]  dump_stack+0x11c/0x1ac
[   67.265260]  print_address_description.constprop.0+0x30/0x274
[   67.271286]  kasan_report+0x14c/0x1c8
[   67.275143]  __asan_report_store1_noabort+0x34/0x58
[   67.280265]  ffs_data_clear+0x70/0x370 [usb_f_fs]
[   67.285220]  ffs_data_reset+0x20/0x304 [usb_f_fs]
[   67.290172]  ffs_data_closed+0x240/0x244 [usb_f_fs]
[   67.295305]  ffs_ep0_release+0x40/0x54 [usb_f_fs]
[   67.300256]  __fput+0x304/0x580
[   67.303576]  ____fput+0x18/0x24
[   67.306893]  task_work_run+0x104/0x180
[   67.310846]  do_notify_resume+0x458/0x14e0
[   67.315154]  work_pending+0xc/0x5f8
[   67.318834]
[   67.320429] Allocated by task 2988:
[   67.324105]  kasan_save_stack+0x28/0x58
[   67.328144]  kasan_set_track+0x28/0x3c
[   67.332090]  ____kasan_kmalloc+0x84/0x9c
[   67.336217]  __kasan_kmalloc+0x10/0x1c
[   67.340163]  __kmalloc+0x214/0x2f8
[   67.343754]  kzalloc.constprop.0+0x14/0x20 [usb_f_fs]
[   67.349066]  ffs_alloc_inst+0x8c/0x208 [usb_f_fs]
[   67.354017]  try_get_usb_function_instance+0xf0/0x164 [libcomposite]
[   67.360705]  usb_get_function_instance+0x64/0x68 [libcomposite]
[   67.366934]  function_make+0x128/0x1ec [libcomposite]
[   67.372260]  configfs_mkdir+0x330/0x590 [configfs]
[   67.377320]  vfs_mkdir+0x12c/0x1bc
[   67.380911]  do_mkdirat+0x180/0x1d0
[   67.384589]  __arm64_sys_mkdirat+0x80/0x94
[   67.388899]  invoke_syscall+0xf8/0x25c
[   67.392850]  el0_svc_common.constprop.0+0x150/0x1a0
[   67.397969]  do_el0_svc+0xa0/0xd4
[   67.401464]  el0_svc+0x24/0x34
[   67.404691]  el0_sync_handler+0xcc/0x154
[   67.408819]  el0_sync+0x198/0x1c0
[   67.412315]
[   67.413909] Freed by task 2993:
[   67.417220]  kasan_save_stack+0x28/0x58
[   67.421257]  kasan_set_track+0x28/0x3c
[   67.425204]  kasan_set_free_info+0x28/0x4c
[   67.429513]  ____kasan_slab_free+0x104/0x118
[   67.434001]  __kasan_slab_free+0x18/0x24
[   67.438128]  slab_free_freelist_hook+0x148/0x1f0
[   67.442978]  kfree+0x318/0x440
[   67.446205]  ffs_free_inst+0x164/0x2d8 [usb_f_fs]
[   67.451156]  usb_put_function_instance+0x84/0xa4 [libcomposite]
[   67.457385]  ffs_attr_release+0x18/0x24 [usb_f_fs]
[   67.462428]  config_item_put+0x140/0x1a4 [configfs]
[   67.467570]  configfs_rmdir+0x3fc/0x518 [configfs]
[   67.472626]  vfs_rmdir+0x114/0x234
[   67.476215]  do_rmdir+0x274/0x2b0
[   67.479710]  __arm64_sys_unlinkat+0x94/0xc8
[   67.484108]  invoke_syscall+0xf8/0x25c
[   67.488055]  el0_svc_common.constprop.0+0x150/0x1a0
[   67.493175]  do_el0_svc+0xa0/0xd4
[   67.496671]  el0_svc+0x24/0x34
[   67.499896]  el0_sync_handler+0xcc/0x154
[   67.504024]  el0_sync+0x198/0x1c0
[   67.507520]
[   67.509114] The buggy address belongs to the object at ffff0004c26e9700
[   67.509114]  which belongs to the cache kmalloc-128 of size 128
[   67.522171] The buggy address is located 74 bytes inside of
[   67.522171]  128-byte region [ffff0004c26e9700, ffff0004c26e9780)
[   67.534328] The buggy address belongs to the page:
[   67.539355] page:000000003177a217 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5026e8
[   67.549175] head:000000003177a217 order:1 compound_mapcount:0
[   67.555195] flags: 0x8000000000010200(slab|head|zone=2)
[   67.560687] raw: 8000000000010200 fffffc0013037100 0000000c00000002 ffff0004c0002300
[   67.568791] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
[   67.576890] page dumped because: kasan: bad access detected
[   67.582725]
[   67.584318] Memory state around the buggy address:
[   67.589343]  ffff0004c26e9600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   67.596903]  ffff0004c26e9680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   67.604463] >ffff0004c26e9700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   67.612022]                                               ^
[   67.617860]  ffff0004c26e9780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   67.625421]  ffff0004c26e9800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   67.632981] ==================================================================
[   67.640535] Disabling lock debugging due to kernel taint
 File descriptor[   67.646100] Unable to handle kernel paging request at virtual address fabb801d4000018d
 in bad state
[   67.655456] Mem abort info:
[   67.659619]   ESR = 0x96000004
[   67.662801]   EC = 0x25: DABT (current EL), IL = 32 bits
[   67.668225]   SET = 0, FnV = 0
[   67.671375]   EA = 0, S1PTW = 0
[   67.674613] Data abort info:
[   67.677587]   ISV = 0, ISS = 0x00000004
[   67.681522]   CM = 0, WnR = 0
[   67.684588] [fabb801d4000018d] address between user and kernel address ranges
[   67.691849] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[   67.697470] Modules linked in: usb_f_fs libcomposite configfs ath9k_htc led_class mac80211 libarc4 ath9k_common ath9k_hw ath cfg80211 aes_ce_blk crypto_simd cryptd aes_ce_cipher ghash_ce gf128mul sha2_ce sha1_ce evdev sata_rcar libata xhci_plat_hcd scsi_mod xhci_hcd rene4
[   67.740467] CPU: 0 PID: 2994 Comm: cat Tainted: G    B             5.13.0-rc4+ #8
[   67.748005] Hardware name: Renesas Salvator-X board based on r8a77951 (DT)
[   67.754924] pstate: 00000005 (nzcv daif -PAN -UAO -TCO BTYPE=--)
[   67.760974] pc : ffs_data_clear+0x138/0x370 [usb_f_fs]
[   67.766178] lr : ffs_data_clear+0x124/0x370 [usb_f_fs]
[   67.771365] sp : ffff800014767ad0
[   67.774706] x29: ffff800014767ad0 x28: ffff800009cf91c0 x27: ffff0004c54861a0
[   67.781913] x26: ffff0004dc90b288 x25: 1fffe00099ec10f5 x24: 00000000000a801d
[   67.789118] x23: 1fffe00099f6953a x22: dfff800000000000 x21: ffff0004cfb4a9d0
[   67.796322] x20: d5e000ea00000bb1 x19: ffff0004cfb4a800 x18: 0000000000000000
[   67.803526] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[   67.810730] x14: 0720072007200720 x13: 0720072007200720 x12: 1ffff000028ecefa
[   67.817934] x11: ffff7000028ecefa x10: 0720072007200720 x9 : ffff80001132c014
[   67.825137] x8 : ffff8000147677d8 x7 : ffff8000147677d7 x6 : 0000000000000000
[   67.832341] x5 : 0000000000000001 x4 : ffff7000028ecefb x3 : 0000000000000001
[   67.839544] x2 : 0000000000000005 x1 : 1abc001d4000018d x0 : d5e000ea00000c6d
[   67.846748] Call trace:
[   67.849218]  ffs_data_clear+0x138/0x370 [usb_f_fs]
[   67.854058]  ffs_data_reset+0x20/0x304 [usb_f_fs]
[   67.858810]  ffs_data_closed+0x240/0x244 [usb_f_fs]
[   67.863736]  ffs_ep0_release+0x40/0x54 [usb_f_fs]
[   67.868488]  __fput+0x304/0x580
[   67.871665]  ____fput+0x18/0x24
[   67.874837]  task_work_run+0x104/0x180
[   67.878622]  do_notify_resume+0x458/0x14e0
[   67.882754]  work_pending+0xc/0x5f8
[   67.886282] Code: b4000a54 9102f280 12000802 d343fc01 (38f66821)
[   67.892422] ---[ end trace 6d7cedf53d7abbea ]---
Segmentation fault
root@rcar-gen3:~#
==================================================================

Fixes: 4b187fceec ("usb: gadget: FunctionFS: add devices management code")
Fixes: 3262ad8243 ("usb: gadget: f_fs: Stop ffs_closed NULL pointer dereference")
Fixes: cdafb6d8b8 ("usb: gadget: f_fs: Fix use-after-free in ffs_free_inst")
Reported-by: Bhuvanesh Surachari <bhuvanesh_surachari@mentor.com>
Tested-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Reviewed-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Signed-off-by: Andrew Gabbasov <andrew_gabbasov@mentor.com>
Link: https://lore.kernel.org/r/20210603171507.22514-1-andrew_gabbasov@mentor.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:42 +02:00