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Check only the terminal leaf for a "!PRESENT || MMIO" SPTE when looking
for reserved bits on valid, non-MMIO SPTEs. The get_walk() helpers
terminate their walks if a not-present or MMIO SPTE is encountered, i.e.
the non-terminal SPTEs have already been verified to be regular SPTEs.
This eliminates an extra check-and-branch in a relatively hot loop.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20201218003139.2167891-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Bump the size of the sptes array by one and use the raw level of the
SPTE to index into the sptes array. Using the SPTE level directly
improves readability by eliminating the need to reason out why the level
is being adjusted when indexing the array. The array is on the stack
and is not explicitly initialized; bumping its size is nothing more than
a superficial adjustment to the stack frame.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20201218003139.2167891-4-seanjc@google.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Get the so called "root" level from the low level shadow page table
walkers instead of manually attempting to calculate it higher up the
stack, e.g. in get_mmio_spte(). When KVM is using PAE shadow paging,
the starting level of the walk, from the callers perspective, is not
the CR3 root but rather the PDPTR "root". Checking for reserved bits
from the CR3 root causes get_mmio_spte() to consume uninitialized stack
data due to indexing into sptes[] for a level that was not filled by
get_walk(). This can result in false positives and/or negatives
depending on what garbage happens to be on the stack.
Opportunistically nuke a few extra newlines.
Fixes: 95fb5b0258 ("kvm: x86/mmu: Support MMIO in the TDP MMU")
Reported-by: Richard Herbert <rherbert@sympatico.ca>
Cc: Ben Gardon <bgardon@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20201218003139.2167891-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Return -1 from the get_walk() helpers if the shadow walk doesn't fill at
least one spte, which can theoretically happen if the walk hits a
not-present PDPTR. Returning the root level in such a case will cause
get_mmio_spte() to return garbage (uninitialized stack data). In
practice, such a scenario should be impossible as KVM shouldn't get a
reserved-bit page fault with a not-present PDPTR.
Note, using mmu->root_level in get_walk() is wrong for other reasons,
too, but that's now a moot point.
Fixes: 95fb5b0258 ("kvm: x86/mmu: Support MMIO in the TDP MMU")
Cc: Ben Gardon <bgardon@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20201218003139.2167891-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- Correct a few problems in the x86 and the generic membarrier
implementation. Small corrections for assumptions about visibility
which have turned out not to be true.
- Make the PAT bits for memory encryption correct vs. 4K and 2M/1G page
table entries as they are at a different location.
- Fix a concurrency issue in the the local bandwidth readout of resource
control leading to incorrect values
- Fix the ordering of allocating a vector for an interrupt. The order
missed to respect the provided cpumask when the first attempt of
allocating node local in the mask fails. It then tries the node instead
of trying the full provided mask first. This leads to erroneous error
messages and breaking the (user) supplied affinity request. Reorder it.
- Make the INT3 padding detection in optprobe work correctly.
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Merge tag 'x86-urgent-2020-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of x86 and membarrier fixes:
- Correct a few problems in the x86 and the generic membarrier
implementation. Small corrections for assumptions about visibility
which have turned out not to be true.
- Make the PAT bits for memory encryption correct vs 4K and 2M/1G
page table entries as they are at a different location.
- Fix a concurrency issue in the the local bandwidth readout of
resource control leading to incorrect values
- Fix the ordering of allocating a vector for an interrupt. The order
missed to respect the provided cpumask when the first attempt of
allocating node local in the mask fails. It then tries the node
instead of trying the full provided mask first. This leads to
erroneous error messages and breaking the (user) supplied affinity
request. Reorder it.
- Make the INT3 padding detection in optprobe work correctly"
* tag 'x86-urgent-2020-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kprobes: Fix optprobe to detect INT3 padding correctly
x86/apic/vector: Fix ordering in vector assignment
x86/resctrl: Fix incorrect local bandwidth when mba_sc is enabled
x86/mm/mem_encrypt: Fix definition of PMD_FLAGS_DEC_WP
membarrier: Execute SYNC_CORE on the calling thread
membarrier: Explicitly sync remote cores when SYNC_CORE is requested
membarrier: Add an actual barrier before rseq_preempt()
x86/membarrier: Get rid of a dubious optimization
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Merge tag 'block-5.10-2020-12-12' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"This should be it for 5.10.
Mike and Song looked into the warning case, and thankfully it appears
the fix was pretty trivial - we can just change the md device chunk
type to unsigned int to get rid of it. They cannot currently be < 0,
and nobody is checking for that either.
We're reverting the discard changes as the corruption reports came in
very late, and there's just no time to attempt to deal with it at this
point. Reverting the changes in question is the right call for 5.10"
* tag 'block-5.10-2020-12-12' of git://git.kernel.dk/linux-block:
md: change mddev 'chunk_sectors' from int to unsigned
Revert "md: add md_submit_discard_bio() for submitting discard bio"
Revert "md/raid10: extend r10bio devs to raid disks"
Revert "md/raid10: pull codes that wait for blocked dev into one function"
Revert "md/raid10: improve raid10 discard request"
Revert "md/raid10: improve discard request for far layout"
Revert "dm raid: remove unnecessary discard limits for raid10"
Five small fixes: four in drivers: hisi_sas: fix internal queue
timeout, be2iscsi: revert a prior fix causing problems, bnx2i: add
missing dependency, storvsc: late arriving revert of a problem fix,
and one in the core. The core one is a minor change to stop paying
attention to the busy count when returning out of resources because
there's a race window where the queue might not restart due to missing
returning I/O.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Five small fixes. Four in drivers:
- hisi_sas: fix internal queue timeout
- be2iscsi: revert a prior fix causing problems
- bnx2i: add missing dependency
- storvsc: late arriving revert of a problem fix
and one in the core.
The core one is a minor change to stop paying attention to the busy
count when returning out of resources because there's a race window
where the queue might not restart due to missing returning I/O"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
Revert "scsi: storvsc: Validate length of incoming packet in storvsc_on_channel_callback()"
scsi: hisi_sas: Select a suitable queue for internal I/Os
scsi: core: Fix race between handling STS_RESOURCE and completion
scsi: be2iscsi: Revert "Fix a theoretical leak in beiscsi_create_eqs()"
scsi: bnx2i: Requires MMU
Pull i2c fix from Wolfram Sang:
"Bugfix for the AT24 EEPROM driver"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
misc: eeprom: at24: fix NVMEM name with custom AT24 device name
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Bugfixes for ARM, x86 and tools"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
tools/kvm_stat: Exempt time-based counters
KVM: mmu: Fix SPTE encoding of MMIO generation upper half
kvm: x86/mmu: Use cpuid to determine max gfn
kvm: svm: de-allocate svm_cpu_data for all cpus in svm_cpu_uninit()
selftests: kvm/set_memory_region_test: Fix race in move region test
KVM: arm64: Add usage of stage 2 fault lookup level in user_mem_abort()
KVM: arm64: Fix handling of merging tables into a block entry
KVM: arm64: Fix memory leak on stage2 update of a valid PTE
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Merge tag 'for-linus-5.10c-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"A short series fixing a regression introduced in 5.9 for running as
Xen dom0 on a system with NVMe backed storage"
* tag 'for-linus-5.10c-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen: don't use page->lru for ZONE_DEVICE memory
xen: add helpers for caching grant mapping pages
I've just got one fix. It's nothing critical, just a randconfig that
wasn't building. That said, it does seem pretty safe and is technically
a regression so I'm sending it along for 5.10:
* Define get_cycles64() all the time, as it's used by most
configurations.
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Merge tag 'riscv-for-linus-5.10-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fix from Palmer Dabbelt:
"Just one fix. It's nothing critical, just a randconfig that wasn't
building. That said, it does seem pretty safe and is technically a
regression so I'm sending it along for 5.10:
- define get_cycles64() all the time, as it's used by most
configurations"
* tag 'riscv-for-linus-5.10-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: Define get_cycles64() regardless of M-mode
Pull input fixes from Dmitry Torokhov:
- a fix for cm109 stomping on its own control URB if it tries to toggle
buzzer immediately after userspace opens input device (found by
syzcaller)
- another fix for Raydium touchscreens that do not like splitting
command transfers
- quirks for i8042, soc_button_array, and goodix drivers to make them
work better with certain hardware.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: goodix - add upside-down quirk for Teclast X98 Pro tablet
Input: cm109 - do not stomp on control URB
Input: i8042 - add Acer laptops to the i8042 reset list
Input: cros_ec_keyb - send 'scancodes' in addition to key events
Input: soc_button_array - add Lenovo Yoga Tablet2 1051L to the dmi_use_low_level_irq list
Input: raydium_ts_i2c - do not split tx transactions
Commit e2782f560c ("Revert "dm raid: remove unnecessary discard
limits for raid10"") exposed compiler warnings introduced by commit
e0910c8e4f ("dm raid: fix discard limits for raid1 and raid10"):
In file included from ./include/linux/kernel.h:14,
from ./include/asm-generic/bug.h:20,
from ./arch/x86/include/asm/bug.h:93,
from ./include/linux/bug.h:5,
from ./include/linux/mmdebug.h:5,
from ./include/linux/gfp.h:5,
from ./include/linux/slab.h:15,
from drivers/md/dm-raid.c:8:
drivers/md/dm-raid.c: In function ‘raid_io_hints’:
./include/linux/minmax.h:18:28: warning: comparison of distinct pointer types lacks a cast
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
^~
./include/linux/minmax.h:32:4: note: in expansion of macro ‘__typecheck’
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~
./include/linux/minmax.h:42:24: note: in expansion of macro ‘__safe_cmp’
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~
./include/linux/minmax.h:51:19: note: in expansion of macro ‘__careful_cmp’
#define min(x, y) __careful_cmp(x, y, <)
^~~~~~~~~~~~~
./include/linux/minmax.h:84:39: note: in expansion of macro ‘min’
__x == 0 ? __y : ((__y == 0) ? __x : min(__x, __y)); })
^~~
drivers/md/dm-raid.c:3739:33: note: in expansion of macro ‘min_not_zero’
limits->max_discard_sectors = min_not_zero(rs->md.chunk_sectors,
^~~~~~~~~~~~
Fix this by changing the chunk_sectors member of 'struct mddev' from
int to 'unsigned int' to match the type used for the 'chunk_sectors'
member of 'struct queue_limits'. Various MD code still uses 'int' but
none of it appears to ever make use of signed int; and storing
positive signed int in unsigned is perfectly safe.
Reported-by: Song Liu <songliubraving@fb.com>
Fixes: e2782f560c ("Revert "dm raid: remove unnecessary discard limits for raid10"")
Fixes: e0910c8e4f ("dm raid: fix discard limits for raid1 and raid10")
Cc: stable@vger,kernel.org # e0910c8e4f was marked for stable@
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Song Liu <song@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Commit
7705dc8557 ("x86/vmlinux: Use INT3 instead of NOP for linker fill bytes")
changed the padding bytes between functions from NOP to INT3. However,
when optprobe decodes a target function it finds INT3 and gives up the
jump optimization.
Instead of giving up any INT3 detection, check whether the rest of the
bytes to the end of the function are INT3. If all of them are INT3,
those come from the linker. In that case, continue the optprobe jump
optimization.
[ bp: Massage commit message. ]
Fixes: 7705dc8557 ("x86/vmlinux: Use INT3 instead of NOP for linker fill bytes")
Reported-by: Adam Zabrocki <pi3@pi3.com.pl>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/160767025681.3880685.16021570341428835411.stgit@devnote2
The touchscreen on the Teclast x98 Pro is also mounted upside-down in
relation to the display orientation.
Signed-off-by: Simon Beginn <linux@simonmicro.de>
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Link: https://lore.kernel.org/r/20201117004253.27A5A27EFD@localhost
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The new counters halt_poll_success_ns and halt_poll_fail_ns do not count
events. Instead they provide a time, and mess up our statistics. Therefore,
we should exclude them.
Removal is currently implemented with an exempt list. If more counters like
these appear, we can think about a more general rule like excluding all
fields name "*_ns", in case that's a standing convention.
Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Tested-and-reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20201208210829.101324-1-raspl@linux.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Commit cae7ed3c2c ("KVM: x86: Refactor the MMIO SPTE generation handling")
cleaned up the computation of MMIO generation SPTE masks, however it
introduced a bug how the upper part was encoded:
SPTE bits 52-61 were supposed to contain bits 10-19 of the current
generation number, however a missing shift encoded bits 1-10 there instead
(mostly duplicating the lower part of the encoded generation number that
then consisted of bits 1-9).
In the meantime, the upper part was shrunk by one bit and moved by
subsequent commits to become an upper half of the encoded generation number
(bits 9-17 of bits 0-17 encoded in a SPTE).
In addition to the above, commit 56871d444b ("KVM: x86: fix overlap between SPTE_MMIO_MASK and generation")
has changed the SPTE bit range assigned to encode the generation number and
the total number of bits encoded but did not update them in the comment
attached to their defines, nor in the KVM MMU doc.
Let's do it here, too, since it is too trivial thing to warrant a separate
commit.
Fixes: cae7ed3c2c ("KVM: x86: Refactor the MMIO SPTE generation handling")
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Message-Id: <156700708db2a5296c5ed7a8b9ac71f1e9765c85.1607129096.git.maciej.szmigiero@oracle.com>
Cc: stable@vger.kernel.org
[Reorganize macros so that everything is computed from the bit ranges. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Second fixes series initiated because of a rework of the ECC engine
subsystem. The location of the DT parsing logic got moved, breaking
several drivers which in fact were not doing the ECC engine
initialization at the right place. These drivers have been fixed by
enforcing a particular ECC engine type and algorithm, software
Hamming, while the algorithm may be overwritten by a DT
property. This merge request fixes this in the xway, socrates,
plat_nand, pasemi, orion, mpc5121, gpio, au1550 and ams-delta
controller drivers.
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Merge tag 'mtd/fixes-for-5.10-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull mtd fixes from Miquel Raynal:
"Second series of fixes for raw NAND drivers initiated because of a
rework of the ECC engine subsystem.
The location of the DT parsing logic got moved, breaking several
drivers which in fact were not doing the ECC engine initialization at
the right place.
These drivers have been fixed by enforcing a particular ECC engine
type and algorithm, software Hamming, while the algorithm may be
overwritten by a DT property. This merge request fixes this in the
xway, socrates, plat_nand, pasemi, orion, mpc5121, gpio, au1550 and
ams-delta controller drivers"
* tag 'mtd/fixes-for-5.10-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
mtd: rawnand: xway: Do not force a particular software ECC engine
mtd: rawnand: socrates: Do not force a particular software ECC engine
mtd: rawnand: plat_nand: Do not force a particular software ECC engine
mtd: rawnand: pasemi: Do not force a particular software ECC engine
mtd: rawnand: orion: Do not force a particular software ECC engine
mtd: rawnand: mpc5121: Do not force a particular software ECC engine
mtd: rawnand: gpio: Do not force a particular software ECC engine
mtd: rawnand: au1550: Do not force a particular software ECC engine
mtd: rawnand: ams-delta: Do not force a particular software ECC engine
- Fixup condition for CMD13 polling for RPMB requests
MMC host:
- mtk-sd: Fix system suspend/resume support for CQHCI
- mtd-sd: Extend SDIO IRQ fix to more variants
- sdhci-of-arasan: Fix clock registration error for Keem Bay SOC
- tmio: Bring HW to a sane state after a power off
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Merge tag 'mmc-v5.10-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"A couple of MMC fixes:
MMC core:
- Fixup condition for CMD13 polling for RPMB requests
MMC host:
- mtk-sd: Fix system suspend/resume support for CQHCI
- mtd-sd: Extend SDIO IRQ fix to more variants
- sdhci-of-arasan: Fix clock registration error for Keem Bay SOC
- tmio: Bring HW to a sane state after a power off"
* tag 'mmc-v5.10-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: mediatek: mark PM functions as __maybe_unused
mmc: block: Fixup condition for CMD13 polling for RPMB requests
mmc: tmio: improve bringing HW to a sane state with MMC_POWER_OFF
mmc: sdhci-of-arasan: Fix clock registration error for Keem Bay SOC
mmc: mediatek: Extend recheck_sdio_irq fix to more variants
mmc: mediatek: Fix system suspend/resume support for CQHCI
- fix NVMEM name with custom AT24 device name
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Merge tag 'at24-fixes-for-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-current
at24 fixes for v5.10
- fix NVMEM name with custom AT24 device name
A single patch in this pull request to fix a BIO and page reference
leak when writing sequential zone files.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
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Merge tag 'zonefs-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs
Pull zonefs fix from Damien Le Moal:
"A single patch in this pull request to fix a BIO and page reference
leak when writing sequential zone files"
* tag 'zonefs-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
zonefs: fix page reference and BIO leak
Remove bpf_ prefix, which causes these helpers to be reported in verifier
dump as bpf_bpf_this_cpu_ptr() and bpf_bpf_per_cpu_ptr(), respectively. Lets
fix it as long as it is still possible before UAPI freezes on these helpers.
Fixes: eaa6bcb71e ("bpf: Introduce bpf_per_cpu_ptr()")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge misc fixes from Andrew Morton:
"8 patches.
Subsystems affected by this patch series: proc, selftests, kbuild, and
mm (pagecache, kasan, hugetlb)"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm/hugetlb: clear compound_nr before freeing gigantic pages
kasan: fix object remaining in offline per-cpu quarantine
elfcore: fix building with clang
initramfs: fix clang build failure
kbuild: avoid static_assert for genksyms
selftest/fpu: avoid clang warning
proc: use untagged_addr() for pagemap_read addresses
revert "mm/filemap: add static for function __add_to_page_cache_locked"
Commit 1378a5ee45 ("mm: store compound_nr as well as compound_order")
added compound_nr counter to first tail struct page, overlaying with
page->mapping. The overlay itself is fine, but while freeing gigantic
hugepages via free_contig_range(), a "bad page" check will trigger for
non-NULL page->mapping on the first tail page:
BUG: Bad page state in process bash pfn:380001
page:00000000c35f0856 refcount:0 mapcount:0 mapping:00000000126b68aa index:0x0 pfn:0x380001
aops:0x0
flags: 0x3ffff00000000000()
raw: 3ffff00000000000 0000000000000100 0000000000000122 0000000100000000
raw: 0000000000000000 0000000000000000 ffffffff00000000 0000000000000000
page dumped because: non-NULL mapping
Modules linked in:
CPU: 6 PID: 616 Comm: bash Not tainted 5.10.0-rc7-next-20201208 #1
Hardware name: IBM 3906 M03 703 (LPAR)
Call Trace:
show_stack+0x6e/0xe8
dump_stack+0x90/0xc8
bad_page+0xd6/0x130
free_pcppages_bulk+0x26a/0x800
free_unref_page+0x6e/0x90
free_contig_range+0x94/0xe8
update_and_free_page+0x1c4/0x2c8
free_pool_huge_page+0x11e/0x138
set_max_huge_pages+0x228/0x300
nr_hugepages_store_common+0xb8/0x130
kernfs_fop_write+0xd2/0x218
vfs_write+0xb0/0x2b8
ksys_write+0xac/0xe0
system_call+0xe6/0x288
Disabling lock debugging due to kernel taint
This is because only the compound_order is cleared in
destroy_compound_gigantic_page(), and compound_nr is set to
1U << order == 1 for order 0 in set_compound_order(page, 0).
Fix this by explicitly clearing compound_nr for first tail page after
calling set_compound_order(page, 0).
Link: https://lkml.kernel.org/r/20201208182813.66391-2-gerald.schaefer@linux.ibm.com
Fixes: 1378a5ee45 ("mm: store compound_nr as well as compound_order")
Signed-off-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: <stable@vger.kernel.org> [5.9+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We hit this issue in our internal test. When enabling generic kasan, a
kfree()'d object is put into per-cpu quarantine first. If the cpu goes
offline, object still remains in the per-cpu quarantine. If we call
kmem_cache_destroy() now, slub will report "Objects remaining" error.
=============================================================================
BUG test_module_slab (Not tainted): Objects remaining in test_module_slab on __kmem_cache_shutdown()
-----------------------------------------------------------------------------
Disabling lock debugging due to kernel taint
INFO: Slab 0x(____ptrval____) objects=34 used=1 fp=0x(____ptrval____) flags=0x2ffff00000010200
CPU: 3 PID: 176 Comm: cat Tainted: G B 5.10.0-rc1-00007-g4525c8781ec0-dirty #10
Hardware name: linux,dummy-virt (DT)
Call trace:
dump_backtrace+0x0/0x2b0
show_stack+0x18/0x68
dump_stack+0xfc/0x168
slab_err+0xac/0xd4
__kmem_cache_shutdown+0x1e4/0x3c8
kmem_cache_destroy+0x68/0x130
test_version_show+0x84/0xf0
module_attr_show+0x40/0x60
sysfs_kf_seq_show+0x128/0x1c0
kernfs_seq_show+0xa0/0xb8
seq_read+0x1f0/0x7e8
kernfs_fop_read+0x70/0x338
vfs_read+0xe4/0x250
ksys_read+0xc8/0x180
__arm64_sys_read+0x44/0x58
el0_svc_common.constprop.0+0xac/0x228
do_el0_svc+0x38/0xa0
el0_sync_handler+0x170/0x178
el0_sync+0x174/0x180
INFO: Object 0x(____ptrval____) @offset=15848
INFO: Allocated in test_version_show+0x98/0xf0 age=8188 cpu=6 pid=172
stack_trace_save+0x9c/0xd0
set_track+0x64/0xf0
alloc_debug_processing+0x104/0x1a0
___slab_alloc+0x628/0x648
__slab_alloc.isra.0+0x2c/0x58
kmem_cache_alloc+0x560/0x588
test_version_show+0x98/0xf0
module_attr_show+0x40/0x60
sysfs_kf_seq_show+0x128/0x1c0
kernfs_seq_show+0xa0/0xb8
seq_read+0x1f0/0x7e8
kernfs_fop_read+0x70/0x338
vfs_read+0xe4/0x250
ksys_read+0xc8/0x180
__arm64_sys_read+0x44/0x58
el0_svc_common.constprop.0+0xac/0x228
kmem_cache_destroy test_module_slab: Slab cache still has objects
Register a cpu hotplug function to remove all objects in the offline
per-cpu quarantine when cpu is going offline. Set a per-cpu variable to
indicate this cpu is offline.
[qiang.zhang@windriver.com: fix slab double free when cpu-hotplug]
Link: https://lkml.kernel.org/r/20201204102206.20237-1-qiang.zhang@windriver.com
Link: https://lkml.kernel.org/r/1606895585-17382-2-git-send-email-Kuan-Ying.Lee@mediatek.com
Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Signed-off-by: Zqiang <qiang.zhang@windriver.com>
Suggested-by: Dmitry Vyukov <dvyukov@google.com>
Reported-by: Guangye Yang <guangye.yang@mediatek.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Nicholas Tang <nicholas.tang@mediatek.com>
Cc: Miles Chen <miles.chen@mediatek.com>
Cc: Qian Cai <qcai@redhat.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/elfcore.c only contains weak symbols, which triggers a bug with
clang in combination with recordmcount:
Cannot find symbol for section 2: .text.
kernel/elfcore.o: failed
Move the empty stubs into linux/elfcore.h as inline functions. As only
two architectures use these, just use the architecture specific Kconfig
symbols to key off the declaration.
Link: https://lkml.kernel.org/r/20201204165742.3815221-2-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Barret Rhoden <brho@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There is only one function in init/initramfs.c that is in the .text
section, and it is marked __weak. When building with clang-12 and the
integrated assembler, this leads to a bug with recordmcount:
./scripts/recordmcount "init/initramfs.o"
Cannot find symbol for section 2: .text.
init/initramfs.o: failed
I'm not quite sure what exactly goes wrong, but I notice that this
function is only ever called from an __init function, and normally
inlined. Marking it __init as well is clearly correct and it leads to
recordmcount no longer complaining.
Link: https://lkml.kernel.org/r/20201204165742.3815221-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Barret Rhoden <brho@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
genksyms does not know or care about the _Static_assert() built-in, and
sometimes falls back to ignoring the later symbols, which causes
undefined behavior such as
WARNING: modpost: EXPORT symbol "ethtool_set_ethtool_phy_ops" [vmlinux] version generation failed, symbol will not be versioned.
ld: net/ethtool/common.o: relocation R_AARCH64_ABS32 against `__crc_ethtool_set_ethtool_phy_ops' can not be used when making a shared object
net/ethtool/common.o:(_ftrace_annotated_branch+0x0): dangerous relocation: unsupported relocation
Redefine static_assert for genksyms to avoid that.
Link: https://lkml.kernel.org/r/20201203230955.1482058-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Kees Cook <keescook@chromium.org>
Cc: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Cc: Marco Elver <elver@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
With extra warnings enabled, clang complains about the redundant
-mhard-float argument:
clang: error: argument unused during compilation: '-mhard-float' [-Werror,-Wunused-command-line-argument]
Move this into the gcc-only part of the Makefile.
Link: https://lkml.kernel.org/r/20201203223652.1320700-1-arnd@kernel.org
Fixes: 4185b3b927 ("selftests/fpu: Add an FPU selftest")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Petteri Aimonen <jpa@git.mail.kapsi.fi>
Cc: Borislav Petkov <bp@suse.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When we try to visit the pagemap of a tagged userspace pointer, we find
that the start_vaddr is not correct because of the tag.
To fix it, we should untag the userspace pointers in pagemap_read().
I tested with 5.10-rc4 and the issue remains.
Explanation from Catalin in [1]:
"Arguably, that's a user-space bug since tagged file offsets were never
supported. In this case it's not even a tag at bit 56 as per the arm64
tagged address ABI but rather down to bit 47. You could say that the
problem is caused by the C library (malloc()) or whoever created the
tagged vaddr and passed it to this function. It's not a kernel
regression as we've never supported it.
Now, pagemap is a special case where the offset is usually not
generated as a classic file offset but rather derived by shifting a
user virtual address. I guess we can make a concession for pagemap
(only) and allow such offset with the tag at bit (56 - PAGE_SHIFT + 3)"
My test code is based on [2]:
A userspace pointer which has been tagged by 0xb4: 0xb400007662f541c8
userspace program:
uint64 OsLayer::VirtualToPhysical(void *vaddr) {
uint64 frame, paddr, pfnmask, pagemask;
int pagesize = sysconf(_SC_PAGESIZE);
off64_t off = ((uintptr_t)vaddr) / pagesize * 8; // off = 0xb400007662f541c8 / pagesize * 8 = 0x5a00003b317aa0
int fd = open(kPagemapPath, O_RDONLY);
...
if (lseek64(fd, off, SEEK_SET) != off || read(fd, &frame, 8) != 8) {
int err = errno;
string errtxt = ErrorString(err);
if (fd >= 0)
close(fd);
return 0;
}
...
}
kernel fs/proc/task_mmu.c:
static ssize_t pagemap_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
...
src = *ppos;
svpfn = src / PM_ENTRY_BYTES; // svpfn == 0xb400007662f54
start_vaddr = svpfn << PAGE_SHIFT; // start_vaddr == 0xb400007662f54000
end_vaddr = mm->task_size;
/* watch out for wraparound */
// svpfn == 0xb400007662f54
// (mm->task_size >> PAGE) == 0x8000000
if (svpfn > mm->task_size >> PAGE_SHIFT) // the condition is true because of the tag 0xb4
start_vaddr = end_vaddr;
ret = 0;
while (count && (start_vaddr < end_vaddr)) { // we cannot visit correct entry because start_vaddr is set to end_vaddr
int len;
unsigned long end;
...
}
...
}
[1] https://lore.kernel.org/patchwork/patch/1343258/
[2] https://github.com/stressapptest/stressapptest/blob/master/src/os.cc#L158
Link: https://lkml.kernel.org/r/20201204024347.8295-1-miles.chen@mediatek.com
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Song Bao Hua (Barry Song) <song.bao.hua@hisilicon.com>
Cc: <stable@vger.kernel.org> [5.4-]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Revert commit 3351b16af4 ("mm/filemap: add static for function
__add_to_page_cache_locked") due to incompatibility with
ALLOW_ERROR_INJECTION which result in build errors.
Link: https://lkml.kernel.org/r/CAADnVQJ6tmzBXvtroBuEH6QA0H+q7yaSKxrVvVxhqr3KBZdEXg@mail.gmail.com
Tested-by: Justin Forbes <jmforbes@linuxtx.org>
Tested-by: Greg Thelen <gthelen@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Michal Kubecek <mkubecek@suse.cz>
Cc: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Tony Luck <tony.luck@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We need to make sure we are not stomping on the control URB that was
issued when opening the device when attempting to toggle buzzer.
To do that we need to mark it as pending in cm109_open().
Reported-and-tested-by: syzbot+150f793ac5bc18eee150@syzkaller.appspotmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Originally, commit d7157ff49a ("mtd: rawnand: Use the ECC framework
user input parsing bits") kind of broke the logic around the
initialization of several ECC engines.
Unfortunately, the fix (which indeed moved the ECC initialization to
the right place) did not take into account the fact that a different
ECC algorithm could have been used thanks to a DT property,
considering the "Hamming" algorithm entry a configuration while it was
only a default.
Add the necessary logic to be sure Hamming keeps being only a default.
Fixes: d525914b5b ("mtd: rawnand: xway: Move the ECC initialization to ->attach_chip()")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-10-miquel.raynal@bootlin.com
Originally, commit d7157ff49a ("mtd: rawnand: Use the ECC framework
user input parsing bits") kind of broke the logic around the
initialization of several ECC engines.
Unfortunately, the fix (which indeed moved the ECC initialization to
the right place) did not take into account the fact that a different
ECC algorithm could have been used thanks to a DT property,
considering the "Hamming" algorithm entry a configuration while it was
only a default.
Add the necessary logic to be sure Hamming keeps being only a default.
Fixes: b36bf0a0fe ("mtd: rawnand: socrates: Move the ECC initialization to ->attach_chip()")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-9-miquel.raynal@bootlin.com
Originally, commit d7157ff49a ("mtd: rawnand: Use the ECC framework
user input parsing bits") kind of broke the logic around the
initialization of several ECC engines.
Unfortunately, the fix (which indeed moved the ECC initialization to
the right place) did not take into account the fact that a different
ECC algorithm could have been used thanks to a DT property,
considering the "Hamming" algorithm entry a configuration while it was
only a default.
Add the necessary logic to be sure Hamming keeps being only a default.
Fixes: 612e048e6a ("mtd: rawnand: plat_nand: Move the ECC initialization to ->attach_chip()")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-8-miquel.raynal@bootlin.com
Originally, commit d7157ff49a ("mtd: rawnand: Use the ECC framework
user input parsing bits") kind of broke the logic around the
initialization of several ECC engines.
Unfortunately, the fix (which indeed moved the ECC initialization to
the right place) did not take into account the fact that a different
ECC algorithm could have been used thanks to a DT property,
considering the "Hamming" algorithm entry a configuration while it was
only a default.
Add the necessary logic to be sure Hamming keeps being only a default.
Fixes: 8fc6f1f042 ("mtd: rawnand: pasemi: Move the ECC initialization to ->attach_chip()")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-7-miquel.raynal@bootlin.com
Originally, commit d7157ff49a ("mtd: rawnand: Use the ECC framework
user input parsing bits") kind of broke the logic around the
initialization of several ECC engines.
Unfortunately, the fix (which indeed moved the ECC initialization to
the right place) did not take into account the fact that a different
ECC algorithm could have been used thanks to a DT property,
considering the "Hamming" algorithm entry a configuration while it was
only a default.
Add the necessary logic to be sure Hamming keeps being only a default.
Reported-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Fixes: 553508cec2 ("mtd: rawnand: orion: Move the ECC initialization to ->attach_chip()")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-6-miquel.raynal@bootlin.com
Originally, commit d7157ff49a ("mtd: rawnand: Use the ECC framework
user input parsing bits") kind of broke the logic around the
initialization of several ECC engines.
Unfortunately, the fix (which indeed moved the ECC initialization to
the right place) did not take into account the fact that a different
ECC algorithm could have been used thanks to a DT property,
considering the "Hamming" algorithm entry a configuration while it was
only a default.
Add the necessary logic to be sure Hamming keeps being only a default.
Fixes: 6dd09f775b ("mtd: rawnand: mpc5121: Move the ECC initialization to ->attach_chip()")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-5-miquel.raynal@bootlin.com
Originally, commit d7157ff49a ("mtd: rawnand: Use the ECC framework
user input parsing bits") kind of broke the logic around the
initialization of several ECC engines.
Unfortunately, the fix (which indeed moved the ECC initialization to
the right place) did not take into account the fact that a different
ECC algorithm could have been used thanks to a DT property,
considering the "Hamming" algorithm entry a configuration while it was
only a default.
Add the necessary logic to be sure Hamming keeps being only a default.
Fixes: f6341f6448 ("mtd: rawnand: gpio: Move the ECC initialization to ->attach_chip()")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-4-miquel.raynal@bootlin.com
Originally, commit d7157ff49a ("mtd: rawnand: Use the ECC framework
user input parsing bits") kind of broke the logic around the
initialization of several ECC engines.
Unfortunately, the fix (which indeed moved the ECC initialization to
the right place) did not take into account the fact that a different
ECC algorithm could have been used thanks to a DT property,
considering the "Hamming" algorithm entry a configuration while it was
only a default.
Add the necessary logic to be sure Hamming keeps being only a default.
Fixes: dbffc8ccdf ("mtd: rawnand: au1550: Move the ECC initialization to ->attach_chip()")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-3-miquel.raynal@bootlin.com
Originally, commit d7157ff49a ("mtd: rawnand: Use the ECC framework
user input parsing bits") kind of broke the logic around the
initialization of several ECC engines.
Unfortunately, the fix (which indeed moved the ECC initialization to
the right place) did not take into account the fact that a different
ECC algorithm could have been used thanks to a DT property,
considering the "Hamming" algorithm entry a configuration while it was
only a default.
Add the necessary logic to be sure Hamming keeps being only a default.
Fixes: 59d9347332 ("mtd: rawnand: ams-delta: Move the ECC initialization to ->attach_chip()")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20201203190340.15522-2-miquel.raynal@bootlin.com
- Fix up some SPI group and a register offset on Intel Jasperlake.
- Set default bias on Intel Merrifield.
- Preserve debouncing on Intel Baytrail.
- Stop .set_type() irqchip callback in the AMD driver from fiddling
with the debounce filter.
- Fix access to GPIO banks that are pass-thru on the Aspeed.
- Fix a fix for the Intel pin control driver to disable Rx/Tx when
requesting a UART line as GPIO.
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Merge tag 'pinctrl-v5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Here is a late set of pin control fixes for v5.10, most concern some
minor and major issues found in the Intel drivers. Some are so hairy
that I have no idea what is going on there, but luckily the maintainer
knows what's up.
We also have an interesting fix for AMD, which makes AMD-based laptops
more stable IIUC.
Summary:
- Fix up some SPI group and a register offset on Intel Jasperlake
- Set default bias on Intel Merrifield
- Preserve debouncing on Intel Baytrail
- Stop .set_type() irqchip callback in the AMD driver from fiddling
with the debounce filter
- Fix access to GPIO banks that are pass-thru on the Aspeed
- Fix a fix for the Intel pin control driver to disable Rx/Tx when
requesting a UART line as GPIO"
* tag 'pinctrl-v5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: intel: Actually disable Tx and Rx buffers on GPIO request
pinctrl: aspeed: Fix GPIO requests on pass-through banks
pinctrl: amd: remove debounce filter setting in IRQ type setting
pinctrl: baytrail: Avoid clearing debounce value when turning it off
pinctrl: merrifield: Set default bias in case no particular value given
pinctrl: jasperlake: Fix HOSTSW_OWN offset
pinctrl: jasperlake: Unhide SPI group of pins
- Fix runtime PM balancing on the errorpath of the Arizona driver.
- Fix a suspend NULL pointer reference in the dwapb driver.
- Balance free:ing in gpiochip_generic_free()
- Fix runtime PM balancing on the errorpath of the zynq driver.
- Fix irqdomain use-after-free in the mvebu driver.
- Break an eternal loop in the spreadtrum EIC driver.
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Merge tag 'v5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"These are hopefully the last GPIO fixes for this cycle.
All are driver fixes except a small resource leak for pin ranges in
the gpiolib. Two are PM related, which is nice because when developers
start to find PM bugs it is usually because they have smoked out the
bugs of more severe nature.
Summary:
- Fix runtime PM balancing on the errorpath of the Arizona driver
- Fix a suspend NULL pointer reference in the dwapb driver
- Balance free:ing in gpiochip_generic_free()
- Fix runtime PM balancing on the errorpath of the zynq driver
- Fix irqdomain use-after-free in the mvebu driver
- Break an eternal loop in the spreadtrum EIC driver"
* tag 'v5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: eic-sprd: break loop when getting NULL device resource
gpio: mvebu: fix potential user-after-free on probe
gpio: zynq: fix reference leak in zynq_gpio functions
gpiolib: Don't free if pin ranges are not defined
gpio: dwapb: fix NULL pointer dereference at dwapb_gpio_suspend()
gpio: arizona: disable pm_runtime in case of failure
- Remove __packed from a Renesas struct to improve portability
- Fix a linking problem with i.MX when config options don't agree
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"Two small clk driver build fixes
- Remove __packed from a Renesas struct to improve portability
- Fix a linking problem with i.MX when config options don't agree"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: renesas: r9a06g032: Drop __packed for portability
clk: imx: scu: fix MXC_CLK_SCU module build break
This reverts commit 3b8c72d076.
Dexuan reported a regression where StorVSC fails to probe a device (and
where, consequently, the VM may fail to boot). The root-cause analysis led
to a long-standing race condition that is exposed by the validation /commit
in question. Let's put the new validation aside until a proper solution
for that race condition is in place.
Link: https://lore.kernel.org/r/20201211131404.21359-1-parri.andrea@gmail.com
Fixes: 3b8c72d076 ("scsi: storvsc: Validate length of incoming packet in storvsc_on_channel_callback()")
Cc: Dexuan Cui <decui@microsoft.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
amdgpu:
- Fan fix for CI asics
- Fix a warning in possible_crtcs
- Build fix for when debugfs is disabled
- Display overflow fix
- Display watermark fixes for Renoir
- SDMA 5.2 fix
- Stolen vga memory regression fix
- Power profile fixes
- Fix a regression from removal of GEM and PRIME callbacks
amdkfd:
- Fix a memory leak in dmabuf import
i915:
- rc7 regression fix for modesetting
- vdsc/dp slice fixes
- gen9 mocs entries fix
- preemption timeout fix
- unsigned compare against 0 fix
- selftest fix
- submission error propogatig fix
- request flow suspend fix
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Merge tag 'drm-fixes-2020-12-11' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Last week of fixes, just amdgpu and i915 collections. We had a i915
regression reported by HJ Lu reported this morning, and this contains
a fix for that he has tested.
There are a fair few other fixes, but they are spread across the two
drivers, and all fairly self contained.
amdgpu:
- Fan fix for CI asics
- Fix a warning in possible_crtcs
- Build fix for when debugfs is disabled
- Display overflow fix
- Display watermark fixes for Renoir
- SDMA 5.2 fix
- Stolen vga memory regression fix
- Power profile fixes
- Fix a regression from removal of GEM and PRIME callbacks
amdkfd:
- Fix a memory leak in dmabuf import
i915:
- rc7 regression fix for modesetting
- vdsc/dp slice fixes
- gen9 mocs entries fix
- preemption timeout fix
- unsigned compare against 0 fix
- selftest fix
- submission error propogatig fix
- request flow suspend fix"
* tag 'drm-fixes-2020-12-11' of git://anongit.freedesktop.org/drm/drm:
drm/i915/display: Go softly softly on initial modeset failure
drm/amd/pm: typo fix (CUSTOM -> COMPUTE)
drm/amdgpu: Initialise drm_gem_object_funcs for imported BOs
drm/amdgpu: fix size calculation with stolen vga memory
drm/amd/pm: update smu10.h WORKLOAD_PPLIB setting for raven
drm/amdkfd: Fix leak in dmabuf import
drm/amdgpu: fix sdma instance fw version and feature version init
drm/amd/display: Add wm table for Renoir
drm/amd/display: Prevent bandwidth overflow
drm/amdgpu: fix debugfs creation/removal, again
drm/amdgpu/disply: set num_crtc earlier
drm/amdgpu/powerplay: parse fan table for CI asics
drm/i915/gt: Declare gen9 has 64 mocs entries!
drm/i915/display/dp: Compute the correct slice count for VDSC on DP
drm/i915: fix size_t greater or equal to zero comparison
drm/i915/gt: Cancel the preemption timeout on responding to it
drm/i915/gt: Ignore repeated attempts to suspend request flow across reset
drm/i915/gem: Propagate error from cancelled submit due to context closure
drm/i915/gem: Check the correct variable in selftest
The timer driver uses get_cycles64() unconditionally to obtain the current
time. A recent refactoring lost the common definition for some configs, which
is now the only one we need.
Fixes: d5be89a8d1 ("RISC-V: Resurrect the MMIO timer implementation for M-mode systems")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
ktest.pl does not know about grub2bls that was introduced in Fedora 30,
and now it does.
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Merge tag 'ktest-v5.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
Pull ktest fix from Steven Rostedt:
"Fix issues with grub2bls in ktest.pl
ktest.pl did not know about grub2bls that was introduced in Fedora 30,
and now it does"
* tag 'ktest-v5.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
ktest.pl: Fix incorrect reboot for grub2bls
