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When a ZONE_DEVICE private page is freed, the page->mapping field can be
set. If this page is reused as an anonymous page, the previous value
can prevent the page from being inserted into the CPU's anon rmap table.
For example, when migrating a pte_none() page to device memory:
migrate_vma(ops, vma, start, end, src, dst, private)
migrate_vma_collect()
src[] = MIGRATE_PFN_MIGRATE
migrate_vma_prepare()
/* no page to lock or isolate so OK */
migrate_vma_unmap()
/* no page to unmap so OK */
ops->alloc_and_copy()
/* driver allocates ZONE_DEVICE page for dst[] */
migrate_vma_pages()
migrate_vma_insert_page()
page_add_new_anon_rmap()
__page_set_anon_rmap()
/* This check sees the page's stale mapping field */
if (PageAnon(page))
return
/* page->mapping is not updated */
The result is that the migration appears to succeed but a subsequent CPU
fault will be unable to migrate the page back to system memory or worse.
Clear the page->mapping field when freeing the ZONE_DEVICE page so stale
pointer data doesn't affect future page use.
Link: http://lkml.kernel.org/r/20190719192955.30462-3-rcampbell@nvidia.com
Fixes: b7a523109fb5c9d2d6dd ("mm: don't clear ->mapping in hmm_devmem_free")
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Jan Kara <jack@suse.cz>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Patch series "mm/hmm: fixes for device private page migration", v3.
Testing the latest linux git tree turned up a few bugs with page
migration to and from ZONE_DEVICE private and anonymous pages.
Hopefully it clarifies how ZONE_DEVICE private struct page uses the same
mapping and index fields from the source anonymous page mapping.
This patch (of 3):
Struct page for ZONE_DEVICE private pages uses the page->mapping and and
page->index fields while the source anonymous pages are migrated to
device private memory. This is so rmap_walk() can find the page when
migrating the ZONE_DEVICE private page back to system memory.
ZONE_DEVICE pmem backed fsdax pages also use the page->mapping and
page->index fields when files are mapped into a process address space.
Add comments to struct page and remove the unused "_zd_pad_1" field to
make this more clear.
Link: http://lkml.kernel.org/r/20190724232700.23327-2-rcampbell@nvidia.com
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The RISC-V kernel implementation of flush_tlb_page() when CONFIG_SMP
is set is wrong. It passes zero to flush_tlb_range() as the final
address to flush, but it should be at least 'addr'.
Some other Linux architecture ports use the beginning address to
flush, plus PAGE_SIZE, as the final address to flush. This might
flush slightly more than what's needed, but it seems unlikely that
being more clever would improve anything. So let's just take that
implementation for now.
While here, convert the macro into a static inline function, primarily
to avoid unintentional multiple evaluations of 'addr'.
This second version of the patch fixes a coding style issue found by
Christoph Hellwig <hch@lst.de>.
Reported-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Pull tpm fixes from Jarkko Sakkinen:
"One more bug fix for the next release"
* tag 'tpmdd-next-20190813' of git://git.infradead.org/users/jjs/linux-tpmdd:
KEYS: trusted: allow module init if TPM is inactive or deactivated
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fix from James Bottomley:
"Single lpfc fix, for a single-cpu corner case"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: lpfc: Fix crash when cpu count is 1 and null irq affinity mask
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Commit c78719203fc6 ("KEYS: trusted: allow trusted.ko to initialize w/o a
TPM") allows the trusted module to be loaded even if a TPM is not found, to
avoid module dependency problems.
However, trusted module initialization can still fail if the TPM is
inactive or deactivated. tpm_get_random() returns an error.
This patch removes the call to tpm_get_random() and instead extends the PCR
specified by the user with zeros. The security of this alternative is
equivalent to the previous one, as either option prevents with a PCR update
unsealing and misuse of sealed data by a user space process.
Even if a PCR is extended with zeros, instead of random data, it is still
computationally infeasible to find a value as input for a new PCR extend
operation, to obtain again the PCR value that would allow unsealing.
Cc: stable@vger.kernel.org
Fixes: 240730437deb ("KEYS: trusted: explicitly use tpm_chip structure...")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Tyler Hicks <tyhicks@canonical.com>
Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
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This patch changes the driver/user shared (mmapped) CQ notification
flags field from unsigned 64-bits size to unsigned 32-bits size. This
enables building siw on 32-bit architectures.
This patch changes the siw-abi, but as siw was only just merged in
this merge window cycle, there are no released kernels with the prior
abi. We are making no attempt to be binary compatible with siw user
space libraries prior to the merge of siw into the upstream kernel,
only moving forward with upstream kernels and upstream rdma-core
provided siw libraries are we guaranteeing compatibility.
Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com>
Link: https://lore.kernel.org/r/20190809151816.13018-1-bmt@zurich.ibm.com
Signed-off-by: Doug Ledford <dledford@redhat.com>
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HP Envy x360 (AMD Ryzen-based model) with 103c:8497 needs the same
quirk like HP Spectre x360 for enabling the mute LED over Mic3 pin.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=204373
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Update MAINTAINERS to reflect that fs/iomap.c file
was splitted into separate files in fs/iomap/
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: linux-fsdevel@vger.kernel.org
Fixes: cb7181ff4b1c ("iomap: move the main iteration code into a separate file")
Signed-off-by: Denis Efremov <efremov@linux.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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drm-intel-fixes
gvt-fixes-2019-08-13
- Fix one use-after-free error (Dan)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813095845.GF19140@zhen-hp.sh.intel.com
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If a CPU doesn't support the page size for which the kernel is
configured, then we will complain and refuse to bring it online. For
secondary CPUs (and the boot CPU on a system booting with EFI), we will
also print an error identifying the mismatch.
Consequently, the only time that the cpufeature code can detect a
granule size mismatch is for a granule other than the one that is
currently being used. Although we would rather such systems didn't
exist, we've unfortunately lost that battle and Kevin reports that
on his amlogic S922X (odroid-n2 board) we end up warning and taining
with defconfig because 16k pages are not supported by all of the CPUs.
In such a situation, we don't actually care about the feature mismatch,
particularly now that KVM only exposes the sanitised view of the CPU
registers (commit 93390c0a1b20 - "arm64: KVM: Hide unsupported AArch64
CPU features from guests"). Treat the granule fields as non-strict and
let Kevin run without a tainted kernel.
Cc: Marc Zyngier <maz@kernel.org>
Reported-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
[catalin.marinas@arm.com: changelog updated with KVM sanitised regs commit]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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It's large and doesn't need contiguous memory. Fixes
allocation failures in some cases.
v2: kvfree the memory.
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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The SOC15_REG_OFFSET() macro wasn't used, making the soft recovery fail.
v2: use WREG32_SOC15 instead of WREG32 + SOC15_REG_OFFSET
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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fec's gpio phy reset properties have been deprecated.
Update the dt-bindings documentation to explicitly mark
them as such, and provide a short description of the
recommended alternative.
Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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Each iteration of for_each_child_of_node puts the previous node, but in
the case of a return or break from the middle of the loop, there is no
put, thus causing a memory leak. Hence add an of_node_put before the
return or break in three places.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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ITLB entry modifications must be followed by the isync instruction
before the new entries are possibly used. cpu_reset lacks one isync
between ITLB way 6 initialization and jump to the identity mapping.
Add missing isync to xtensa cpu_reset.
Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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Zorro Lang reported a crash in generic/475 if we try to inactivate a
corrupt inode with a NULL attr fork (stack trace shortened somewhat):
RIP: 0010:xfs_bmapi_read+0x311/0xb00 [xfs]
RSP: 0018:ffff888047f9ed68 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888047f9f038 RCX: 1ffffffff5f99f51
RDX: 0000000000000002 RSI: 0000000000000008 RDI: 0000000000000012
RBP: ffff888002a41f00 R08: ffffed10005483f0 R09: ffffed10005483ef
R10: ffffed10005483ef R11: ffff888002a41f7f R12: 0000000000000004
R13: ffffe8fff53b5768 R14: 0000000000000005 R15: 0000000000000001
FS: 00007f11d44b5b80(0000) GS:ffff888114200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000ef6000 CR3: 000000002e176003 CR4: 00000000001606e0
Call Trace:
xfs_dabuf_map.constprop.18+0x696/0xe50 [xfs]
xfs_da_read_buf+0xf5/0x2c0 [xfs]
xfs_da3_node_read+0x1d/0x230 [xfs]
xfs_attr_inactive+0x3cc/0x5e0 [xfs]
xfs_inactive+0x4c8/0x5b0 [xfs]
xfs_fs_destroy_inode+0x31b/0x8e0 [xfs]
destroy_inode+0xbc/0x190
xfs_bulkstat_one_int+0xa8c/0x1200 [xfs]
xfs_bulkstat_one+0x16/0x20 [xfs]
xfs_bulkstat+0x6fa/0xf20 [xfs]
xfs_ioc_bulkstat+0x182/0x2b0 [xfs]
xfs_file_ioctl+0xee0/0x12a0 [xfs]
do_vfs_ioctl+0x193/0x1000
ksys_ioctl+0x60/0x90
__x64_sys_ioctl+0x6f/0xb0
do_syscall_64+0x9f/0x4d0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f11d39a3e5b
The "obvious" cause is that the attr ifork is null despite the inode
claiming an attr fork having at least one extent, but it's not so
obvious why we ended up with an inode in that state.
Reported-by: Zorro Lang <zlang@redhat.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204031
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
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Continue our game of replacing ASSERTs for corrupt ondisk metadata with
EFSCORRUPTED returns.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
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We need to set the error codes on these paths. Currently the only
possible error code is -EMSGSIZE so that's what the patch uses.
Fixes: 83c2c1fcbd08 ("RDMA/nldev: Allow get counter mode through RDMA netlink")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Link: https://lore.kernel.org/r/20190809101311.GA17867@mwanda
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The error handling code doesn't free siw_cpu_info.tx_valid_cpus[0]. The
first iteration through the loop is a no-op so this is sort of an off
by one bug. Also Bernard pointed out that we can remove the NULL
assignment and simplify the code a bit.
Fixes: bdcf26bf9b3a ("rdma/siw: network and RDMA core interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Bernard Metzler <bmt@zurich.ibm.com>
Reviewed-by: Bernard Metzler <bmt@zurich.ibm.com>
Link: https://lore.kernel.org/r/20190809140904.GB3552@mwanda
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Call to uverbs_close_fd() releases file pointer to 'ev_file' and
mlx5_ib_dev is going to be inaccessible. Cache pointer prior cleaning
resources to solve the KASAN warning below.
BUG: KASAN: use-after-free in devx_async_event_close+0x391/0x480 [mlx5_ib]
Read of size 8 at addr ffff888301e3cec0 by task devx_direct_tes/4631
CPU: 1 PID: 4631 Comm: devx_direct_tes Tainted: G OE 5.3.0-rc1-for-upstream-dbg-2019-07-26_01-19-56-93 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu2 04/01/2014
Call Trace:
dump_stack+0x9a/0xeb
print_address_description+0x1e2/0x400
? devx_async_event_close+0x391/0x480 [mlx5_ib]
__kasan_report+0x15c/0x1df
? devx_async_event_close+0x391/0x480 [mlx5_ib]
kasan_report+0xe/0x20
devx_async_event_close+0x391/0x480 [mlx5_ib]
__fput+0x26a/0x7b0
task_work_run+0x10d/0x180
exit_to_usermode_loop+0x137/0x160
do_syscall_64+0x3c7/0x490
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f5df907d664
Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f
80 00 00 00 00 8b 05 6a cd 20 00 48 63 ff 85 c0 75 13 b8
03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 44 f3 c3 66 90
48 83 ec 18 48 89 7c 24 08 e8
RSP: 002b:00007ffd353cb958 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 000056017a88c348 RCX: 00007f5df907d664
RDX: 00007f5df969d400 RSI: 00007f5de8f1ec90 RDI: 0000000000000006
RBP: 00007f5df9681dc0 R08: 00007f5de8736410 R09: 000056017a9d2dd0
R10: 000000000000000b R11: 0000000000000246 R12: 00007f5de899d7d0
R13: 00007f5df96c4248 R14: 00007f5de8f1ecb0 R15: 000056017ae41308
Allocated by task 4631:
save_stack+0x19/0x80
kasan_kmalloc.constprop.3+0xa0/0xd0
alloc_uobj+0x71/0x230 [ib_uverbs]
alloc_begin_fd_uobject+0x2e/0xc0 [ib_uverbs]
rdma_alloc_begin_uobject+0x96/0x140 [ib_uverbs]
ib_uverbs_run_method+0xdf0/0x1940 [ib_uverbs]
ib_uverbs_cmd_verbs+0x57e/0xdb0 [ib_uverbs]
ib_uverbs_ioctl+0x177/0x260 [ib_uverbs]
do_vfs_ioctl+0x18f/0x1010
ksys_ioctl+0x70/0x80
__x64_sys_ioctl+0x6f/0xb0
do_syscall_64+0x95/0x490
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 4631:
save_stack+0x19/0x80
__kasan_slab_free+0x11d/0x160
slab_free_freelist_hook+0x67/0x1a0
kfree+0xb9/0x2a0
uverbs_close_fd+0x118/0x1c0 [ib_uverbs]
devx_async_event_close+0x28a/0x480 [mlx5_ib]
__fput+0x26a/0x7b0
task_work_run+0x10d/0x180
exit_to_usermode_loop+0x137/0x160
do_syscall_64+0x3c7/0x490
entry_SYSCALL_64_after_hwframe+0x49/0xbe
The buggy address belongs to the object at ffff888301e3cda8
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 280 bytes inside of 512-byte region
[ffff888301e3cda8, ffff888301e3cfa8)
The buggy address belongs to the page:
page:ffffea000c078e00 refcount:1 mapcount:0
mapping:ffff888352811300 index:0x0 compound_mapcount: 0
flags: 0x2fffff80010200(slab|head)
raw: 002fffff80010200 ffffea000d152608 ffffea000c077808 ffff888352811300
raw: 0000000000000000 0000000000250025 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888301e3cd80: fc fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb
ffff888301e3ce00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888301e3ce80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888301e3cf00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888301e3cf80: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc
Disabling lock debugging due to kernel taint
Cc: <stable@vger.kernel.org> # 5.2
Fixes: 759738537142 ("IB/mlx5: Enable subscription for device events over DEVX")
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Link: https://lore.kernel.org/r/20190808081538.28772-1-leon@kernel.org
Signed-off-by: Doug Ledford <dledford@redhat.com>
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One of the modifications made by commit d916b1be94b6 ("nvme-pci: use
host managed power state for suspend") was adding a pci_save_state()
call to nvme_suspend() so as to instruct the PCI bus type to leave
devices handled by the nvme driver in D0 during suspend-to-idle.
That was done with the assumption that ASPM would transition the
device's PCIe link into a low-power state when the device became
inactive. However, if ASPM is disabled for the device, its PCIe
link will stay in L0 and in that case commit d916b1be94b6 is likely
to cause the energy used by the system while suspended to increase.
Namely, if the device in question works in accordance with the PCIe
specification, putting it into D3hot causes its PCIe link to go to
L1 or L2/L3 Ready, which is lower-power than L0. Since the energy
used by the system while suspended depends on the state of its PCIe
link (as a general rule, the lower-power the state of the link, the
less energy the system will use), putting the device into D3hot
during suspend-to-idle should be more energy-efficient that leaving
it in D0 with disabled ASPM.
For this reason, avoid leaving NVMe devices with disabled ASPM in D0
during suspend-to-idle. Instead, shut them down entirely and let
the PCI bus type put them into D3.
Fixes: d916b1be94b6 ("nvme-pci: use host managed power state for suspend")
Link: https://lore.kernel.org/linux-pm/2763495.NmdaWeg79L@kreacher/T/#t
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
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Add a function checking whether or not PCIe ASPM has been enabled for
a given device.
It will be used by the NVMe driver to decide how to handle the
device during system suspend.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
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Add missing break statement in order to prevent the code from falling
through to case SH_BREAKPOINT_WRITE.
Fixes: 09a072947791 ("sh: hw-breakpoints: Add preliminary support for SH-4A UBC.")
Cc: stable@vger.kernel.org
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
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Remove logically dead code and mark switch cases where we are expecting
to fall through.
Fix the following warnings (Building: defconfig sh):
arch/sh/kernel/disassemble.c:478:8: warning: this statement may fall
through [-Wimplicit-fallthrough=]
arch/sh/kernel/disassemble.c:487:8: warning: this statement may fall
through [-Wimplicit-fallthrough=]
arch/sh/kernel/disassemble.c:496:8: warning: this statement may fall
through [-Wimplicit-fallthrough=]
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull dax fixes from Dan Williams:
"A filesystem-dax and device-dax fix for v5.3.
The filesystem-dax fix is tagged for stable as the implementation has
been mistakenly throwing away all cow pages on any truncate or hole
punch operation as part of the solution to coordinate device-dma vs
truncate to dax pages.
The device-dax change fixes up a regression this cycle from the
introduction of a common 'internal per-cpu-ref' implementation.
Summary:
- Fix dax_layout_busy_page() to not discard private cow pages of
fs/dax private mappings.
- Update the memremap_pages core to properly cleanup on behalf of
internal reference-count users like device-dax"
* tag 'dax-fixes-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
mm/memremap: Fix reuse of pgmap instances with internal references
dax: dax_layout_busy_page() should not unmap cow pages
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Pull NTB fix from Jon Mason:
"Bug fix for NTB MSI kernel compile warning"
* tag 'ntb-5.3-bugfixes' of git://github.com/jonmason/ntb:
NTB/msi: remove incorrect MODULE defines
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
"A few minor RISC-V updates for v5.3-rc4:
- Remove __udivdi3() from the 32-bit Linux port, converting the only
upstream user to use do_div(), per Linux policy
- Convert the RISC-V standard clocksource away from per-cpu data
structures, since only one is used by Linux, even on a multi-CPU
system
- A set of DT binding updates that remove an obsolete text binding in
favor of a YAML binding, fix a bogus compatible string in the
schema (thus fixing a "make dtbs_check" warning), and clarifies the
future values expected in one of the RISC-V CPU properties"
* tag 'riscv/for-v5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
dt-bindings: riscv: fix the schema compatible string for the HiFive Unleashed board
dt-bindings: riscv: remove obsolete cpus.txt
RISC-V: Remove udivdi3
riscv: delay: use do_div() instead of __udivdi3()
dt-bindings: Update the riscv,isa string description
RISC-V: Remove per cpu clocksource
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A few fixes for x86:
- Don't reset the carefully adjusted build flags for the purgatory
and remove the unwanted flags instead. The 'reset all' approach led
to build fails under certain circumstances.
- Unbreak CLANG build of the purgatory by avoiding the builtin
memcpy/memset implementations.
- Address missing prototype warnings by including the proper header
- Fix yet more fall-through issues"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/lib/cpu: Address missing prototypes warning
x86/purgatory: Use CFLAGS_REMOVE rather than reset KBUILD_CFLAGS
x86/purgatory: Do not use __builtin_memcpy and __builtin_memset
x86: mtrr: cyrix: Mark expected switch fall-through
x86/ptrace: Mark expected switch fall-through
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf tooling fixes from Thomas Gleixner:
"Perf tooling fixes all over the place:
- Fix the selection of the main thread COMM in db-export
- Fix the disassemmbly display for BPF in annotate
- Fix cpumap mask setup in perf ftrace when only one CPU is present
- Add the missing 'cpu_clk_unhalted.core' event
- Fix CPU 0 bindings in NUMA benchmarks
- Fix the module size calculations for s390
- Handle the gap between kernel end and module start on s390
correctly
- Build and typo fixes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf pmu-events: Fix missing "cpu_clk_unhalted.core" event
perf annotate: Fix s390 gap between kernel end and module start
perf record: Fix module size on s390
perf tools: Fix include paths in ui directory
perf tools: Fix a typo in a variable name in the Documentation Makefile
perf cpumap: Fix writing to illegal memory in handling cpumap mask
perf ftrace: Fix failure to set cpumask when only one cpu is present
perf db-export: Fix thread__exec_comm()
perf annotate: Fix printing of unaugmented disassembled instructions from BPF
perf bench numa: Fix cpu0 binding
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"Three fixlets for the scheduler:
- Avoid double bandwidth accounting in the push & pull code
- Use a sane FIFO priority for the Pressure Stall Information (PSI)
thread.
- Avoid permission checks when setting the scheduler params for the
PSI thread"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/psi: Do not require setsched permission from the trigger creator
sched/psi: Reduce psimon FIFO priority
sched/deadline: Fix double accounting of rq/running bw in push & pull
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A small fix for the affinity spreading code.
It failed to handle situations where a single vector was requested
either due to only one CPU being available or vector exhaustion
causing only a single interrupt to be granted.
The fix is to simply remove the requirement in the affinity spreading
code for more than one interrupt being available"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/affinity: Create affinity mask for single vector
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool warning fix from Thomas Gleixner:
"The recent objtool fixes/enhancements unearthed a unbalanced CLAC in
the i915 driver.
Chris asked me to pick the fix up and route it through"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
drm/i915: Remove redundant user_access_end() from __copy_from_user() error path
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git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 fix from Andreas Gruenbacher:
"Fix incorrect lseek / fiemap results"
* tag 'gfs2-v5.3-rc3.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: gfs2_walk_metadata fix
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for clang
A compilation -Wimplicit-fallthrough warning was enabled by commit
a035d552a93b ("Makefile: Globally enable fall-through warning")
Even though clang 10.0.0 does not currently support this warning without
a patch, clang currently does not support a value for this option.
Link: https://bugs.llvm.org/show_bug.cgi?id=39382
The gcc default for this warning is 3 so removing the =3 has no effect
for gcc and enables the warning for patched versions of clang.
Also remove the =3 from an existing use in a parisc Makefile:
arch/parisc/math-emu/Makefile
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-and-tested-by: Nathan Chancellor <natechancellor@gmail.com>
Cc: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes Greg KH:
"Here are some small char/misc driver fixes for 5.3-rc4.
Two of these are for the habanalabs driver for issues found when
running on a big-endian system (are they still alive?) The others are
tiny fixes reported by people, and a MAINTAINERS update about the
location of the fpga development tree.
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
coresight: Fix DEBUG_LOCKS_WARN_ON for uninitialized attribute
MAINTAINERS: Move linux-fpga tree to new location
nvmem: Use the same permissions for eeprom as for nvmem
habanalabs: fix host memory polling in BE architecture
habanalabs: fix F/W download in BE architecture
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are two small fixes for some driver core issues that have been
reported. There is also a kernfs "fix" here, which was then reverted
because it was found to cause problems in linux-next.
The driver core fixes both resolve reported issues, one with gpioint
stuff that showed up in 5.3-rc1, and the other finally (and hopefully)
resolves a very long standing race when removing glue directories.
It's nice to get that issue finally resolved and the developers
involved should be applauded for the persistence it took to get this
patch finally accepted.
All of these have been in linux-next for a while with no reported
issues. Well, the one reported issue, hence the revert :)"
* tag 'driver-core-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
Revert "kernfs: fix memleak in kernel_ops_readdir()"
kernfs: fix memleak in kernel_ops_readdir()
driver core: Fix use-after-free and double free on glue directory
driver core: platform: return -ENXIO for missing GpioInt
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty fix from Greg KH:
"Here is a single tty kgdb fix for 5.3-rc4.
It fixes an annoying log message that has caused kdb to become
useless. It's another fallout from commit ddde3c18b700 ("vt: More
locking checks") which tries to enforce locking checks more strictly
in the tty layer, unfortunatly when kdb is stopped, there's no need
for locks :)
This patch has been linux-next for a while with no reported issues"
* tag 'tty-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
kgdboc: disable the console lock when in kgdb
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging / IIO driver fixes from Greg KH:
"Here are some small staging and IIO driver fixes for 5.3-rc4.
Nothing major, just resolutions for a number of small reported issues,
full details in the shortlog.
All have been in linux-next for a while with no reported issues"
* tag 'staging-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: adc: gyroadc: fix uninitialized return code
docs: generic-counter.rst: fix broken references for ABI file
staging: android: ion: Bail out upon SIGKILL when allocating memory.
Staging: fbtft: Fix GPIO handling
staging: unisys: visornic: Update the description of 'poll_for_irq()'
staging: wilc1000: flush the workqueue before deinit the host
staging: gasket: apex: fix copy-paste typo
Staging: fbtft: Fix reset assertion when using gpio descriptor
Staging: fbtft: Fix probing of gpio descriptor
iio: imu: mpu6050: add missing available scan masks
iio: cros_ec_accel_legacy: Fix incorrect channel setting
IIO: Ingenic JZ47xx: Set clock divider on probe
iio: adc: max9611: Fix misuse of GENMASK macro
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB fixes for 5.3-rc4.
The "biggest" one here is moving code from one file to another in
order to fix a long-standing race condition with the creation of sysfs
files for USB devices. Turns out that there are now userspace tools
out there that are hitting this long-known bug, so it's time to fix
them. Thankfully the tool-maker in this case fixed the issue :)
The other patches in here are all fixes for reported issues. Now that
syzbot knows how to fuzz USB drivers better, and is starting to now
fuzz the userspace facing side of them at the same time, there will be
more and more small fixes like these coming, which is a good thing.
All of these have been in linux-next with no reported issues"
* tag 'usb-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: setup authorized_default attributes using usb_bus_notify
usb: iowarrior: fix deadlock on disconnect
Revert "USB: rio500: simplify locking"
usb: usbfs: fix double-free of usb memory upon submiturb error
usb: yurex: Fix use-after-free in yurex_delete
usb: typec: tcpm: Ignore unsupported/unknown alternate mode requests
xhci: Fix NULL pointer dereference at endpoint zero reset.
usb: host: xhci-rcar: Fix timeout in xhci_suspend()
usb: typec: ucsi: ccg: Fix uninitilized symbol error
usb: typec: tcpm: remove tcpm dir if no children
usb: typec: tcpm: free log buf memory when remove debug file
usb: typec: tcpm: Add NULL check before dereferencing config
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All the way back to introducing dma_common_mmap we've defaulted to mark
the pages as uncached. But this is wrong for DMA coherent devices.
Later on DMA_ATTR_WRITE_COMBINE also got incorrect treatment as that
flag is only treated special on the alloc side for non-coherent devices.
Introduce a new dma_pgprot helper that deals with the check for coherent
devices so that only the remapping cases ever reach arch_dma_mmap_pgprot
and we thus ensure no aliasing of page attributes happens, which makes
the powerpc version of arch_dma_mmap_pgprot obsolete and simplifies the
remaining ones.
Note that this means arch_dma_mmap_pgprot is a bit misnamed now, but
we'll phase it out soon.
Fixes: 64ccc9c033c6 ("common: dma-mapping: add support for generic dma_mmap_* calls")
Reported-by: Shawn Anastasio <shawn@anastas.io>
Reported-by: Gavin Li <git@thegavinli.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com> # arm64
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The dma required_mask needs to reflect the actual addressing capabilities
needed to handle the whole system RAM. When truncated down to the bus
addressing capabilities dma_addressing_limited() will incorrectly signal
no limitations for devices which are restricted by the bus_dma_mask.
Fixes: b4ebe6063204 (dma-direct: implement complete bus_dma_mask handling)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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The new DMA_ATTR_NO_KERNEL_MAPPING needs to actually assign
a dma_addr to work. Also skip it if the architecture needs
forced decryption handling, as that needs a kernel virtual
address.
Fixes: d98849aff879 (dma-direct: handle DMA_ATTR_NO_KERNEL_MAPPING in common code)
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
- Delay acquisition of regmaps in the Aspeed G5 driver.
- Make a symbol static to reduce compiler noise.
* tag 'pinctrl-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: aspeed: Make aspeed_pinmux_ips static
pinctrl: aspeed-g5: Delay acquisition of regmaps
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
"Just one fix, a revert of a commit that was meant to be a minor
improvement to some inline asm, but ended up having no real benefit
with GCC and broke booting 32-bit machines when using Clang.
Thanks to: Arnd Bergmann, Christophe Leroy, Nathan Chancellor, Nick
Desaulniers, Segher Boessenkool"
* tag 'powerpc-5.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
Revert "powerpc: slightly improve cache helpers"
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git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux
Pull fall-through fixes from Gustavo A. R. Silva:
"Mark more switch cases where we are expecting to fall through, fixing
fall-through warnings in arm, sparc64, mips, i386 and s390"
* tag 'Wimplicit-fallthrough-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
ARM: ep93xx: Mark expected switch fall-through
scsi: fas216: Mark expected switch fall-throughs
pcmcia: db1xxx_ss: Mark expected switch fall-throughs
video: fbdev: omapfb_main: Mark expected switch fall-throughs
watchdog: riowd: Mark expected switch fall-through
s390/net: Mark expected switch fall-throughs
crypto: ux500/crypt: Mark expected switch fall-throughs
watchdog: wdt977: Mark expected switch fall-through
watchdog: scx200_wdt: Mark expected switch fall-through
watchdog: Mark expected switch fall-throughs
ARM: signal: Mark expected switch fall-through
mfd: omap-usb-host: Mark expected switch fall-throughs
mfd: db8500-prcmu: Mark expected switch fall-throughs
ARM: OMAP: dma: Mark expected switch fall-throughs
ARM: alignment: Mark expected switch fall-throughs
ARM: tegra: Mark expected switch fall-through
ARM/hw_breakpoint: Mark expected switch fall-throughs
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To avoid reducing the frequency of a CPU prematurely, we skip reducing
the frequency if the CPU had been busy recently.
This should not be done when the limits of the policy are changed, for
example due to thermal throttling. We should always get the frequency
within the new limits as soon as possible.
Trying to fix this by using only one flag, i.e. need_freq_update, can
lead to a race condition where the flag gets cleared without forcing us
to change the frequency at least once. And so this patch introduces
another flag to avoid that race condition.
Fixes: ecd288429126 ("cpufreq: schedutil: Don't set next_freq to UINT_MAX")
Cc: v4.18+ <stable@vger.kernel.org> # v4.18+
Reported-by: Doug Smythies <dsmythies@telus.net>
Tested-by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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dev_pm_qos_update_request() can return 1 on success, so don't treat
it as an error.
Fixes: 18c49926c4bf ("cpufreq: Add QoS requests for userspace constraints")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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In snd_hda_parse_generic_codec(), 'spec' is allocated through kzalloc().
Then, the pin widgets in 'codec' are parsed. However, if the parsing
process fails, 'spec' is not deallocated, leading to a memory leak.
To fix the above issue, free 'spec' before returning the error.
Fixes: 352f7f914ebb ("ALSA: hda - Merge Realtek parser code to generic parser")
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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