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git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina:
- Various functionality / regression fixes for Logitech devices from
Hans de Goede
- Fix for (recently added) GPIO support in mcp2221 driver from Lars
Povlsen
- Power management handling fix/quirk in i2c-hid driver for certain
BIOSes that have strange aproach to power-cycle from Hans de Goede
- a few device ID additions and device-specific quirks
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: logitech-dj: Fix Dinovo Mini when paired with a MX5x00 receiver
HID: logitech-dj: Fix an error in mse_bluetooth_descriptor
HID: Add Logitech Dinovo Edge battery quirk
HID: logitech-hidpp: Add HIDPP_CONSUMER_VENDOR_KEYS quirk for the Dinovo Edge
HID: logitech-dj: Handle quad/bluetooth keyboards with a builtin trackpad
HID: add HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE for Gamevice devices
HID: mcp2221: Fix GPIO output handling
HID: hid-sensor-hub: Fix issue with devices with no report ID
HID: i2c-hid: Put ACPI enumerated devices in D3 on shutdown
HID: add support for Sega Saturn
HID: cypress: Support Varmilo Keyboards' media hotkeys
HID: ite: Replace ABS_MISC 120/121 events with touchpad on/off keypresses
HID: logitech-hidpp: Add PID for MX Anywhere 2
HID: uclogic: Add ID for Trust Flex Design Tablet
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"A couple of scheduler fixes:
- Make the conditional update of the overutilized state work
correctly by caching the relevant flags state before overwriting
them and checking them afterwards.
- Fix a data race in the wakeup path which caused loadavg on ARM64
platforms to become a random number generator.
- Fix the ordering of the iowaiter accounting operations so it can't
be decremented before it is incremented.
- Fix a bug in the deadline scheduler vs. priority inheritance when a
non-deadline task A has inherited the parameters of a deadline task
B and then blocks on a non-deadline task C.
The second inheritance step used the static deadline parameters of
task A, which are usually 0, instead of further propagating task
B's parameters. The zero initialized parameters trigger a bug in
the deadline scheduler"
* tag 'sched-urgent-2020-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Fix priority inheritance with multiple scheduling classes
sched: Fix rq->nr_iowait ordering
sched: Fix data-race in wakeup
sched/fair: Fix overutilized update in enqueue_task_fair()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Thomas Gleixner:
"A single fix for the x86 perf sysfs interfaces which used kobject
attributes instead of device attributes and therefore making clang's
control flow integrity checker upset"
* tag 'perf-urgent-2020-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86: fix sysfs type mismatches
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Thomas Gleixner:
"A single fix for lockdep which makes the recursion protection cover
graph lock/unlock"
* tag 'locking-urgent-2020-11-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lockdep: Put graph lock/unlock under lock_recursion protection
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Borislav Petkov:
"Forwarded EFI fixes from Ard Biesheuvel:
- fix memory leak in efivarfs driver
- fix HYP mode issue in 32-bit ARM version of the EFI stub when built
in Thumb2 mode
- avoid leaking EFI pgd pages on allocation failure"
* tag 'efi-urgent-for-v5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/x86: Free efi_pgd with free_pages()
efivarfs: fix memory leak in efivarfs_create()
efi/arm: set HSCTLR Thumb2 bit correctly for HVC calls from HYP
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- An IOMMU VT-d build fix when CONFIG_PCI_ATS=n along with a revert of
same because the proper one is going through the IOMMU tree (Thomas
Gleixner)
- An Intel microcode loader fix to save the correct microcode patch to
apply during resume (Chen Yu)
- A fix to not access user memory of other processes when dumping
opcode bytes (Thomas Gleixner)
* tag 'x86_urgent_for_v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "iommu/vt-d: Take CONFIG_PCI_ATS into account"
x86/dumpstack: Do not try to access user space code of other tasks
x86/microcode/intel: Check patch signature before saving microcode for early loading
iommu/vt-d: Take CONFIG_PCI_ATS into account
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Merge misc fixes from Andrew Morton:
"8 patches.
Subsystems affected by this patch series: mm (madvise, pagemap,
readahead, memcg, userfaultfd), kbuild, and vfs"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: fix madvise WILLNEED performance problem
libfs: fix error cast of negative value in simple_attr_write()
mm/userfaultfd: do not access vma->vm_mm after calling handle_userfault()
mm: memcg/slab: fix root memcg vmstats
mm: fix readahead_page_batch for retry entries
mm: fix phys_to_target_node() and memory_add_physaddr_to_nid() exports
compiler-clang: remove version check for BPF Tracing
mm/madvise: fix memory leak from process_madvise
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO fixes from Greg KH:
"Here are some small Staging and IIO driver fixes for 5.10-rc5. They
include:
- IIO fixes for reported regressions and problems
- new device ids for IIO drivers
- new device id for rtl8723bs driver
- staging ralink driver Kconfig dependency fix
- staging mt7621-pci bus resource fix
All of these have been in linux-next all week with no reported issues"
* tag 'staging-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: accel: kxcjk1013: Add support for KIOX010A ACPI DSM for setting tablet-mode
iio: accel: kxcjk1013: Replace is_smo8500_device with an acpi_type enum
docs: ABI: testing: iio: stm32: remove re-introduced unsupported ABI
iio: light: fix kconfig dependency bug for VCNL4035
iio/adc: ingenic: Fix AUX/VBAT readings when touchscreen is used
iio/adc: ingenic: Fix battery VREF for JZ4770 SoC
staging: rtl8723bs: Add 024c:0627 to the list of SDIO device-ids
staging: ralink-gdma: fix kconfig dependency bug for DMA_RALINK
staging: mt7621-pci: avoid to request pci bus resources
iio: imu: st_lsm6dsx: set 10ms as min shub slave timeout
counter/ti-eqep: Fix regmap max_register
iio: adc: stm32-adc: fix a regression when using dma and irq
iio: adc: mediatek: fix unset field
iio: cros_ec: Use default frequencies when EC returns invalid information
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty fixes from Greg KH:
"Here are some small tty/serial fixes for 5.10-rc5 that resolve some
reported issues:
- speakup crash when telling the kernel to use a device that isn't
really there
- imx serial driver fixes for reported problems
- ar933x_uart driver fix for probe error handling path
All have been in linux-next for a while with no reported issues"
* tag 'tty-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: ar933x_uart: disable clk on error handling path in probe
tty: serial: imx: keep console clocks always on
speakup: Do not let the line discipline be used several times
tty: serial: imx: fix potential deadlock
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"A final set of miscellaneous bug fixes for ext4"
* tag 'ext4_for_linus_fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix bogus warning in ext4_update_dx_flag()
jbd2: fix kernel-doc markups
ext4: drop fast_commit from /proc/mounts
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When doing a lookup in a directory, the afs filesystem uses a bulk
status fetch to speculatively retrieve the statuses of up to 48 other
vnodes found in the same directory and it will then either update extant
inodes or create new ones - effectively doing 'lookup ahead'.
To avoid the possibility of deadlocking itself, however, the filesystem
doesn't lock all of those inodes; rather just the directory inode is
locked (by the VFS).
When the operation completes, afs_inode_init_from_status() or
afs_apply_status() is called, depending on whether the inode already
exists, to commit the new status.
A case exists, however, where the speculative status fetch operation may
straddle a modification operation on one of those vnodes. What can then
happen is that the speculative bulk status RPC retrieves the old status,
and whilst that is happening, the modification happens - which returns
an updated status, then the modification status is committed, then we
attempt to commit the speculative status.
This results in something like the following being seen in dmesg:
kAFS: vnode modified {100058:861} 8->9 YFS.InlineBulkStatus
showing that for vnode 861 on volume 100058, we saw YFS.InlineBulkStatus
say that the vnode had data version 8 when we'd already recorded version
9 due to a local modification. This was causing the cache to be
invalidated for that vnode when it shouldn't have been. If it happens
on a data file, this might lead to local changes being lost.
Fix this by ignoring speculative status updates if the data version
doesn't match the expected value.
Note that it is possible to get a DV regression if a volume gets
restored from a backup - but we should get a callback break in such a
case that should trigger a recheck anyway. It might be worth checking
the volume creation time in the volsync info and, if a change is
observed in that (as would happen on a restore), invalidate all caches
associated with the volume.
Fixes: 5cf9dd55a0ec ("afs: Prospectively look up extra files when doing a single lookup")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The calculation of the end page index was incorrect, leading to a
regression of 70% when running stress-ng.
With this fix, we instead see a performance improvement of 3%.
Fixes: e6e88712e43b ("mm: optimise madvise WILLNEED")
Reported-by: kernel test robot <rong.a.chen@intel.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Feng Tang <feng.tang@intel.com>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>
Link: https://lkml.kernel.org/r/20201109134851.29692-1-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The attr->set() receive a value of u64, but simple_strtoll() is used for
doing the conversion. It will lead to the error cast if user inputs a
negative value.
Use kstrtoull() instead of simple_strtoll() to convert a string got from
the user to an unsigned value. The former will return '-EINVAL' if it
gets a negetive value, but the latter can't handle the situation
correctly. Make 'val' unsigned long long as what kstrtoull() takes,
this will eliminate the compile warning on no 64-bit architectures.
Fixes: f7b88631a897 ("fs/libfs.c: fix simple_attr_write() on 32bit machines")
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Link: https://lkml.kernel.org/r/1605341356-11872-1-git-send-email-yangyicong@hisilicon.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Alexander reported a syzkaller / KASAN finding on s390, see below for
complete output.
In do_huge_pmd_anonymous_page(), the pre-allocated pagetable will be
freed in some cases. In the case of userfaultfd_missing(), this will
happen after calling handle_userfault(), which might have released the
mmap_lock. Therefore, the following pte_free(vma->vm_mm, pgtable) will
access an unstable vma->vm_mm, which could have been freed or re-used
already.
For all architectures other than s390 this will go w/o any negative
impact, because pte_free() simply frees the page and ignores the
passed-in mm. The implementation for SPARC32 would also access
mm->page_table_lock for pte_free(), but there is no THP support in
SPARC32, so the buggy code path will not be used there.
For s390, the mm->context.pgtable_list is being used to maintain the 2K
pagetable fragments, and operating on an already freed or even re-used
mm could result in various more or less subtle bugs due to list /
pagetable corruption.
Fix this by calling pte_free() before handle_userfault(), similar to how
it is already done in __do_huge_pmd_anonymous_page() for the WRITE /
non-huge_zero_page case.
Commit 6b251fc96cf2c ("userfaultfd: call handle_userfault() for
userfaultfd_missing() faults") actually introduced both, the
do_huge_pmd_anonymous_page() and also __do_huge_pmd_anonymous_page()
changes wrt to calling handle_userfault(), but only in the latter case
it put the pte_free() before calling handle_userfault().
BUG: KASAN: use-after-free in do_huge_pmd_anonymous_page+0xcda/0xd90 mm/huge_memory.c:744
Read of size 8 at addr 00000000962d6988 by task syz-executor.0/9334
CPU: 1 PID: 9334 Comm: syz-executor.0 Not tainted 5.10.0-rc1-syzkaller-07083-g4c9720875573 #0
Hardware name: IBM 3906 M04 701 (KVM/Linux)
Call Trace:
do_huge_pmd_anonymous_page+0xcda/0xd90 mm/huge_memory.c:744
create_huge_pmd mm/memory.c:4256 [inline]
__handle_mm_fault+0xe6e/0x1068 mm/memory.c:4480
handle_mm_fault+0x288/0x748 mm/memory.c:4607
do_exception+0x394/0xae0 arch/s390/mm/fault.c:479
do_dat_exception+0x34/0x80 arch/s390/mm/fault.c:567
pgm_check_handler+0x1da/0x22c arch/s390/kernel/entry.S:706
copy_from_user_mvcos arch/s390/lib/uaccess.c:111 [inline]
raw_copy_from_user+0x3a/0x88 arch/s390/lib/uaccess.c:174
_copy_from_user+0x48/0xa8 lib/usercopy.c:16
copy_from_user include/linux/uaccess.h:192 [inline]
__do_sys_sigaltstack kernel/signal.c:4064 [inline]
__s390x_sys_sigaltstack+0xc8/0x240 kernel/signal.c:4060
system_call+0xe0/0x28c arch/s390/kernel/entry.S:415
Allocated by task 9334:
slab_alloc_node mm/slub.c:2891 [inline]
slab_alloc mm/slub.c:2899 [inline]
kmem_cache_alloc+0x118/0x348 mm/slub.c:2904
vm_area_dup+0x9c/0x2b8 kernel/fork.c:356
__split_vma+0xba/0x560 mm/mmap.c:2742
split_vma+0xca/0x108 mm/mmap.c:2800
mlock_fixup+0x4ae/0x600 mm/mlock.c:550
apply_vma_lock_flags+0x2c6/0x398 mm/mlock.c:619
do_mlock+0x1aa/0x718 mm/mlock.c:711
__do_sys_mlock2 mm/mlock.c:738 [inline]
__s390x_sys_mlock2+0x86/0xa8 mm/mlock.c:728
system_call+0xe0/0x28c arch/s390/kernel/entry.S:415
Freed by task 9333:
slab_free mm/slub.c:3142 [inline]
kmem_cache_free+0x7c/0x4b8 mm/slub.c:3158
__vma_adjust+0x7b2/0x2508 mm/mmap.c:960
vma_merge+0x87e/0xce0 mm/mmap.c:1209
userfaultfd_release+0x412/0x6b8 fs/userfaultfd.c:868
__fput+0x22c/0x7a8 fs/file_table.c:281
task_work_run+0x200/0x320 kernel/task_work.c:151
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
do_notify_resume+0x100/0x148 arch/s390/kernel/signal.c:538
system_call+0xe6/0x28c arch/s390/kernel/entry.S:416
The buggy address belongs to the object at 00000000962d6948 which belongs to the cache vm_area_struct of size 200
The buggy address is located 64 bytes inside of 200-byte region [00000000962d6948, 00000000962d6a10)
The buggy address belongs to the page: page:00000000313a09fe refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x962d6 flags: 0x3ffff00000000200(slab)
raw: 3ffff00000000200 000040000257e080 0000000c0000000c 000000008020ba00
raw: 0000000000000000 000f001e00000000 ffffffff00000001 0000000096959501
page dumped because: kasan: bad access detected
page->mem_cgroup:0000000096959501
Memory state around the buggy address:
00000000962d6880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000000962d6900: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb
>00000000962d6980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
00000000962d6a00: fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00
00000000962d6a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Fixes: 6b251fc96cf2c ("userfaultfd: call handle_userfault() for userfaultfd_missing() faults")
Reported-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: <stable@vger.kernel.org> [4.3+]
Link: https://lkml.kernel.org/r/20201110190329.11920-1-gerald.schaefer@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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If we reparent the slab objects to the root memcg, when we free the slab
object, we need to update the per-memcg vmstats to keep it correct for
the root memcg. Now this at least affects the vmstat of
NR_KERNEL_STACK_KB for !CONFIG_VMAP_STACK when the thread stack size is
smaller than the PAGE_SIZE.
David said:
"I assume that without this fix that the root memcg's vmstat would
always be inflated if we reparented"
Fixes: ec9f02384f60 ("mm: workingset: fix vmstat counters for shadow nodes")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Christopher Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yafang Shao <laoar.shao@gmail.com>
Cc: Chris Down <chris@chrisdown.name>
Cc: <stable@vger.kernel.org> [5.3+]
Link: https://lkml.kernel.org/r/20201110031015.15715-1-songmuchun@bytedance.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Both btrfs and fuse have reported faults caused by seeing a retry entry
instead of the page they were looking for. This was caused by a missing
check in the iterator.
As can be seen in the below panic log, the accessing 0x402 causes a
panic. In the xarray.h, 0x402 means RETRY_ENTRY.
BUG: kernel NULL pointer dereference, address: 0000000000000402
CPU: 14 PID: 306003 Comm: as Not tainted 5.9.0-1-amd64 #1 Debian 5.9.1-1
Hardware name: Lenovo ThinkSystem SR665/7D2VCTO1WW, BIOS D8E106Q-1.01 05/30/2020
RIP: 0010:fuse_readahead+0x152/0x470 [fuse]
Code: 41 8b 57 18 4c 8d 54 10 ff 4c 89 d6 48 8d 7c 24 10 e8 d2 e3 28 f9 48 85 c0 0f 84 fe 00 00 00 44 89 f2 49 89 04 d4 44 8d 72 01 <48> 8b 10 41 8b 4f 1c 48 c1 ea 10 83 e2 01 80 fa 01 19 d2 81 e2 01
RSP: 0018:ffffad99ceaebc50 EFLAGS: 00010246
RAX: 0000000000000402 RBX: 0000000000000001 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffff94c5af90bd98 RDI: ffffad99ceaebc60
RBP: ffff94ddc1749a00 R08: 0000000000000402 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000100 R12: ffff94de6c429ce0
R13: ffff94de6c4d3700 R14: 0000000000000001 R15: ffffad99ceaebd68
FS: 00007f228c5c7040(0000) GS:ffff94de8ed80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000402 CR3: 0000001dbd9b4000 CR4: 0000000000350ee0
Call Trace:
read_pages+0x83/0x270
page_cache_readahead_unbounded+0x197/0x230
generic_file_buffered_read+0x57a/0xa20
new_sync_read+0x112/0x1a0
vfs_read+0xf8/0x180
ksys_read+0x5f/0xe0
do_syscall_64+0x33/0x80
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes: 042124cc64c3 ("mm: add new readahead_control API")
Reported-by: David Sterba <dsterba@suse.com>
Reported-by: Wonhyuk Yang <vvghjk1234@gmail.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/20201103142852.8543-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20201103124349.16722-1-vvghjk1234@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The core-mm has a default __weak implementation of phys_to_target_node()
to mirror the weak definition of memory_add_physaddr_to_nid(). That
symbol is exported for modules. However, while the export in
mm/memory_hotplug.c exported the symbol in the configuration cases of:
CONFIG_NUMA_KEEP_MEMINFO=y
CONFIG_MEMORY_HOTPLUG=y
...and:
CONFIG_NUMA_KEEP_MEMINFO=n
CONFIG_MEMORY_HOTPLUG=y
...it failed to export the symbol in the case of:
CONFIG_NUMA_KEEP_MEMINFO=y
CONFIG_MEMORY_HOTPLUG=n
Not only is that broken, but Christoph points out that the kernel should
not be exporting any __weak symbol, which means that
memory_add_physaddr_to_nid() example that phys_to_target_node() copied
is broken too.
Rework the definition of phys_to_target_node() and
memory_add_physaddr_to_nid() to not require weak symbols. Move to the
common arch override design-pattern of an asm header defining a symbol
to replace the default implementation.
The only common header that all memory_add_physaddr_to_nid() producing
architectures implement is asm/sparsemem.h. In fact, powerpc already
defines its memory_add_physaddr_to_nid() helper in sparsemem.h.
Double-down on that observation and define phys_to_target_node() where
necessary in asm/sparsemem.h. An alternate consideration that was
discarded was to put this override in asm/numa.h, but that entangles
with the definition of MAX_NUMNODES relative to the inclusion of
linux/nodemask.h, and requires powerpc to grow a new header.
The dependency on NUMA_KEEP_MEMINFO for DEV_DAX_HMEM_DEVICES is invalid
now that the symbol is properly exported / stubbed in all combinations
of CONFIG_NUMA_KEEP_MEMINFO and CONFIG_MEMORY_HOTPLUG.
[dan.j.williams@intel.com: v4]
Link: https://lkml.kernel.org/r/160461461867.1505359.5301571728749534585.stgit@dwillia2-desk3.amr.corp.intel.com
[dan.j.williams@intel.com: powerpc: fix create_section_mapping compile warning]
Link: https://lkml.kernel.org/r/160558386174.2948926.2740149041249041764.stgit@dwillia2-desk3.amr.corp.intel.com
Fixes: a035b6bf863e ("mm/memory_hotplug: introduce default phys_to_target_node() implementation")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lkml.kernel.org/r/160447639846.1133764.7044090803980177548.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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bpftrace parses the kernel headers and uses Clang under the hood.
Remove the version check when __BPF_TRACING__ is defined (as bpftrace
does) so that this tool can continue to parse kernel headers, even with
older clang sources.
Fixes: commit 1f7a44f63e6c ("compiler-clang: add build check for clang 10.0.1")
Reported-by: Chen Yu <yu.chen.surf@gmail.com>
Reported-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lkml.kernel.org/r/20201104191052.390657-1-ndesaulniers@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The early return in process_madvise() will produce a memory leak.
Fix it.
Fixes: ecb8ac8b1f14 ("mm/madvise: introduce process_madvise() syscall: an external memory hinting API")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20201116155132.GA3805951@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull xfs fixes from Darrick Wong:
"The critical fixes are for a crash that someone reported in the xattr
code on 32-bit arm last week; and a revert of the rmap key comparison
change from last week as it was totally wrong. I need a vacation. :(
Summary:
- Fix various deficiencies in online fsck's metadata checking code
- Fix an integer casting bug in the xattr code on 32-bit systems
- Fix a hang in an inode walk when the inode index is corrupt
- Fix error codes being dropped when initializing per-AG structures
- Fix nowait directio writes that partially succeed but return EAGAIN
- Revert last week's rmap comparison patch because it was wrong"
* tag 'xfs-5.10-fixes-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: revert "xfs: fix rmap key and record comparison functions"
xfs: don't allow NOWAIT DIO across extent boundaries
xfs: return corresponding errcode if xfs_initialize_perag() fail
xfs: ensure inobt record walks always make forward progress
xfs: fix forkoff miscalculation related to XFS_LITINO(mp)
xfs: directory scrub should check the null bestfree entries too
xfs: strengthen rmap record flags checking
xfs: fix the minrecs logic when dealing with inode root child blocks
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fanotify fix from Jan Kara:
"A single fanotify fix from Amir"
* tag 'fsnotify_for_v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fanotify: fix logic of reporting name info with watched parent
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp fixes from Kees Cook:
"This gets the seccomp selftests running again on powerpc and sh, and
fixes an audit reporting oversight noticed in both seccomp and ptrace.
- Fix typos in seccomp selftests on powerpc and sh (Kees Cook)
- Fix PF_SUPERPRIV audit marking in seccomp and ptrace (Mickaël
Salaün)"
* tag 'seccomp-v5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
selftests/seccomp: sh: Fix register names
selftests/seccomp: powerpc: Fix typo in macro variable name
seccomp: Set PF_SUPERPRIV when checking capability
ptrace: Set PF_SUPERPRIV when checking capability
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Fixes for two fairly obscure but annoying when triggered races in
iSCSI"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target: iscsi: Fix cmd abort fabric stop race
scsi: libiscsi: Fix NOP race condition
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Pull block fixes from Jens Axboe:
- NVMe pull request from Christoph:
- Doorbell Buffer freeing fix (Minwoo Im)
- CSE log leak fix (Keith Busch)
- blk-cgroup hd_struct leak fix (Christoph)
- Flush request state fix (Ming)
- dasd NULL deref fix (Stefan)
* tag 'block-5.10-2020-11-20' of git://git.kernel.dk/linux-block:
s390/dasd: fix null pointer dereference for ERP requests
blk-cgroup: fix a hd_struct leak in blkcg_fill_root_iostats
nvme: fix memory leak freeing command effects
nvme: directly cache command effects log
nvme: free sq/cq dbbuf pointers when dbbuf set fails
block: mark flush request as IDLE when it is really finished
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Pull io_uring fixes from Jens Axboe:
"Mostly regression or stable fodder:
- Disallow async path resolution of /proc/self
- Tighten constraints for segmented async buffered reads
- Fix double completion for a retry error case
- Fix for fixed file life times (Pavel)"
* tag 'io_uring-5.10-2020-11-20' of git://git.kernel.dk/linux-block:
io_uring: order refnode recycling
io_uring: get an active ref_node from files_data
io_uring: don't double complete failed reissue request
mm: never attempt async page lock if we've transferred data already
io_uring: handle -EOPNOTSUPP on path resolution
proc: don't allow async path resolution of /proc/self components
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It looks like the seccomp selftests was never actually built for sh.
This fixes it, though I don't have an environment to do a runtime test
of it yet.
Fixes: 0bb605c2c7f2b4b3 ("sh: Add SECCOMP_FILTER")
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/lkml/a36d7b48-6598-1642-e403-0c77a86f416d@physik.fu-berlin.de
Signed-off-by: Kees Cook <keescook@chromium.org>
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A typo sneaked into the powerpc selftest. Fix the name so it builds again.
Fixes: 46138329faea ("selftests/seccomp: powerpc: Fix seccomp return value testing")
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/lkml/87y2ix2895.fsf@mpe.ellerman.id.au
Signed-off-by: Kees Cook <keescook@chromium.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"A single fix for avoiding WARN splats when booting a Xen guest with
nosmt"
* tag 'for-linus-5.10b-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/xen: don't unbind uninitialized lock_kicker_irq
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine fixes from Vinod Koul:
"A solitary core fix and a few driver fixes:
Core:
- channel_register error handling
Driver fixes:
- idxd: wq config registers programming and mapping of portal size
- ioatdma: unused fn removal
- pl330: fix burst size
- ti: pm fix on busy and -Wenum-conversion warns
- xilinx: SG capability check, usage of xilinx_aximcdma_tx_segment,
readl_poll_timeout_atomic variant"
* tag 'dmaengine-fix-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dmaengine: fix error codes in channel_register()
dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size
dmaengine: ioatdma: remove unused function missed during dma_v2 removal
dmaengine: idxd: fix mapping of portal size
dmaengine: ti: omap-dma: Block PM if SDMA is busy to fix audio
dmaengine: xilinx_dma: Fix SG capability check for MCDMA
dmaengine: xilinx_dma: Fix usage of xilinx_aximcdma_tx_segment
dmaengine: xilinx_dma: use readl_poll_timeout_atomic variant
dmaengine: ti: k3-udma: fix -Wenum-conversion warning
dmaengine: idxd: fix wq config registers offset programming
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull iommu fixes from Will Deacon:
"Two straightforward vt-d fixes:
- Fix boot when intel iommu initialisation fails under TXT (tboot)
- Fix intel iommu compilation error when DMAR is enabled without ATS
and temporarily update IOMMU MAINTAINERs entry"
* tag 'iommu-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
MAINTAINERS: Temporarily add myself to the IOMMU entry
iommu/vt-d: Fix compile error with CONFIG_PCI_ATS not set
iommu/vt-d: Avoid panic if iommu init fails in tboot system
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"A couple of MMC fixes:
- sdhci-of-arasan: Stabilize communication by fixing tap value configs
- sdhci-pci: Use SDR25 timing for HS mode for BYT-based Intel HWs"
* tag 'mmc-v5.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-of-arasan: Issue DLL reset explicitly
mmc: sdhci-of-arasan: Use Mask writes for Tap delays
mmc: sdhci-of-arasan: Allow configuring zero tap values
mmc: sdhci-pci: Prefer SDR25 timing for High Speed mode for BYT-based Intel controllers
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes: the only core change is a minor error
code handling in the control API, and all the rest are device-specific
fixes, mostly quirks, fixups and ASoC Intel fixes.
It looks boring, and good so"
* tag 'sound-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: mixart: Fix mutex deadlock
ALSA: hda/ca0132: Fix compile warning without PCI
ASOC: Intel: kbl_rt5663_rt5514_max98927: Do not try to disable disabled clock
ALSA: usb-audio: Add delay quirk for all Logitech USB devices
ASoC: Intel: catpt: Correct clock selection for dai trigger
ASoC: Intel: catpt: Skip position update for unprepared streams
ASoC: qcom: lpass-platform: Fix memory leak
ASoC: Intel: KMB: Fix S24_LE configuration
ALSA: hda: Add Alderlake-S PCI ID and HDMI codec vid
ALSA: usb-audio: Use ALC1220-VB-DT mapping for ASUS ROG Strix TRX40 mobo
ALSA: firewire: Clean up a locking issue in copy_resp_to_buf()
ASoC: rt1015: increase the time to detect BCLK
ALSA: ctl: fix error path at adding user-defined element set
ALSA: hda/realtek - HP Headset Mic can't detect after boot
ALSA: hda/realtek - Add supported mute Led for HP
ALSA: hda/realtek: Add some Clove SSID in the ALC293(ALC1220)
ALSA: hda/realtek - Add supported for Lenovo ThinkPad Headset Button
ASoC: rt1015: add delay to fix pop noise from speaker
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Pull drm fixes from Dave Airlie:
"Weekly fixes pull.
This contains some fixes for sun4i/dw-hdmi probing, then amdgpu
enables arcturus hw without experimental flag and two other fixes and
a group of i915 fixes.
It also has a backported from next fix for the warn on reported in
ast/drm_gem_vram_helper code in the merge window. There's a separate
report which initially looked to be the same problem, but I'm going to
chase that up next week a bit more as I don't think the bisect landed
anywhere useful.
Summary:
core:
- vram helper TTM regression fix
amdgpu:
- Pageflip fix for navi1x with 5 or 6 displays
- Remove experimental flag for Arcturus
- Fix regression in atomic commit tail rework
i915:
- Fix tgl power gating issue
- Memory leak fixes
- Selftest fixes
- Display bpc fix
- Fix TGL MOCS for PTE tracking
dw-hdmi:
- probing fix
sun4i:
- probing fix"
* tag 'drm-fixes-2020-11-20-2' of git://anongit.freedesktop.org/drm/drm:
drm/i915/gt: Fixup tgl mocs for PTE tracking
drm/vram-helper: Fix use of top-down placement
drm/i915/gt: Remember to free the virtual breadcrumbs
drm/i915: Handle max_bpc==16
drm/amd/display: Always get CRTC updated constant values inside commit tail
drm/sun4i: backend: Fix probe failure with multiple backends
drm/sun4i: dw-hdmi: fix error return code in sun8i_dw_hdmi_bind()
drm/i915/selftests: Fix wrong return value of perf_request_latency()
drm/i915/selftests: Fix wrong return value of perf_series_engines()
drm/i915: Avoid memory leak with more than 16 workarounds on a list
drm/i915/tgl: Fix Media power gate sequence.
drm/amdgpu: remove experimental flag from arcturus
drm/amd/display: Add missing pflip irq for dcn2.0
drm/i915/gvt: return error when failing to take the module reference
drm: bridge: dw-hdmi: Avoid resetting force in the detect function
drm/i915/gvt: Set ENHANCED_FRAME_CAP bit
drm/i915/gvt: Temporarily disable vfio_edid for BXT/APL
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The idea of the warning in ext4_update_dx_flag() is that we should warn
when we are clearing EXT4_INODE_INDEX on a filesystem with metadata
checksums enabled since after clearing the flag, checksums for internal
htree nodes will become invalid. So there's no need to warn (or actually
do anything) when EXT4_INODE_INDEX is not set.
Link: https://lore.kernel.org/r/20201118153032.17281-1-jack@suse.cz
Fixes: 48a34311953d ("ext4: fix checksum errors with indexed dirs")
Reported-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
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Kernel-doc markup should use this format:
identifier - description
They should not have any type before that, as otherwise
the parser won't do the right thing.
Also, some identifiers have different names between their
prototypes and the kernel-doc markup.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/72f5c6628f5f278d67625f60893ffbc2ca28d46e.1605521731.git.mchehab+huawei@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Fix tgl power gating issue (Rodrigo)
- Memory leak fixes (Tvrtko, Chris)
- Selftest fixes (Zhang)
- Display bpc fix (Ville)
- Fix TGL MOCS for PTE tracking (Chris)
GVT Fixes: It temporarily disables VFIO edid
feature on BXT/APL until its virtual display is really fixed to make
it work properly. And fixes for DPCD 1.2 and error return in taking
module reference.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201119203417.GA1795798@intel.com
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git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
two patches to fix dw-hdmi bind and detection code, and one fix for
sun4i shared with arm-soc
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20201119083939.ddj3saipyg5iwvb4@gilmour
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This reverts commit 6ff646b2ceb0eec916101877f38da0b73e3a5b7f.
Your maintainer committed a major braino in the rmap code by adding the
attr fork, bmbt, and unwritten extent usage bits into rmap record key
comparisons. While XFS uses the usage bits *in the rmap records* for
cross-referencing metadata in xfs_scrub and xfs_repair, it only needs
the owner and offset information to distinguish between reverse mappings
of the same physical extent into the data fork of a file at multiple
offsets. The other bits are not important for key comparisons for index
lookups, and never have been.
Eric Sandeen reports that this causes regressions in generic/299, so
undo this patch before it does more damage.
Reported-by: Eric Sandeen <sandeen@sandeen.net>
Fixes: 6ff646b2ceb0 ("xfs: fix rmap key and record comparison functions")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes for 5.10-rc5, including fixes from the WiFi
(mac80211), can and bpf (including the strncpy_from_user fix).
Current release - regressions:
- mac80211: fix memory leak of filtered powersave frames
- mac80211: free sta in sta_info_insert_finish() on errors to avoid
sleeping in atomic context
- netlabel: fix an uninitialized variable warning added in -rc4
Previous release - regressions:
- vsock: forward all packets to the host when no H2G is registered,
un-breaking AWS Nitro Enclaves
- net: Exempt multicast addresses from five-second neighbor lifetime
requirement, decreasing the chances neighbor tables fill up
- net/tls: fix corrupted data in recvmsg
- qed: fix ILT configuration of SRC block
- can: m_can: process interrupt only when not runtime suspended
Previous release - always broken:
- page_frag: Recover from memory pressure by not recycling pages
allocating from the reserves
- strncpy_from_user: Mask out bytes after NUL terminator
- ip_tunnels: Set tunnel option flag only when tunnel metadata is
present, always setting it confuses Open vSwitch
- bpf, sockmap:
- Fix partial copy_page_to_iter so progress can still be made
- Fix socket memory accounting and obeying SO_RCVBUF
- net: Have netpoll bring-up DSA management interface
- net: bridge: add missing counters to ndo_get_stats64 callback
- tcp: brr: only postpone PROBE_RTT if RTT is < current min_rtt
- enetc: Workaround MDIO register access HW bug
- net/ncsi: move netlink family registration to a subsystem init,
instead of tying it to driver probe
- net: ftgmac100: unregister NC-SI when removing driver to avoid
crash
- lan743x:
- prevent interrupt storm on open
- fix freeing skbs in the wrong context
- net/mlx5e: Fix socket refcount leak on kTLS RX resync
- net: dsa: mv88e6xxx: Avoid VLAN database corruption on 6097
- fix 21 unset return codes and other mistakes on error paths, mostly
detected by the Hulk Robot"
* tag 'net-5.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (115 commits)
fail_function: Remove a redundant mutex unlock
selftest/bpf: Test bpf_probe_read_user_str() strips trailing bytes after NUL
lib/strncpy_from_user.c: Mask out bytes after NUL terminator.
net/smc: fix direct access to ib_gid_addr->ndev in smc_ib_determine_gid()
net/smc: fix matching of existing link groups
ipv6: Remove dependency of ipv6_frag_thdr_truncated on ipv6 module
libbpf: Fix VERSIONED_SYM_COUNT number parsing
net/mlx4_core: Fix init_hca fields offset
atm: nicstar: Unmap DMA on send error
page_frag: Recover from memory pressure
net: dsa: mv88e6xxx: Wait for EEPROM done after HW reset
mlxsw: core: Use variable timeout for EMAD retries
mlxsw: Fix firmware flashing
net: Have netpoll bring-up DSA management interface
atl1e: fix error return code in atl1e_probe()
atl1c: fix error return code in atl1c_probe()
ah6: fix error return code in ah6_input()
net: usb: qmi_wwan: Set DTR quirk for MR400
can: m_can: process interrupt only when not runtime suspended
can: flexcan: flexcan_chip_start(): fix erroneous flexcan_transceiver_enable() during bus-off recovery
...
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Pull rdma fixes from Jason Gunthorpe:
"The last two weeks have been quiet here, just the usual smattering of
long standing bug fixes.
A collection of error case bug fixes:
- Improper nesting of spinlock types in cm
- Missing error codes and kfree()
- Ensure dma_virt_ops users have the right kconfig symbols to work
properly
- Compilation failure of tools/testing"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
tools/testing/scatterlist: Fix test to compile and run
IB/hfi1: Fix error return code in hfi1_init_dd()
RMDA/sw: Don't allow drivers using dma_virt_ops on highmem configs
RDMA/pvrdma: Fix missing kfree() in pvrdma_register_device()
RDMA/cm: Make the local_id_table xarray non-irq
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The options in /proc/mounts must be valid mount options --- and
fast_commit is not a mount option. Otherwise, command sequences like
this will fail:
# mount /dev/vdc /vdc
# mkdir -p /vdc/phoronix_test_suite /pts
# mount --bind /vdc/phoronix_test_suite /pts
# mount -o remount,nodioread_nolock /pts
mount: /pts: mount point not mounted or bad option.
And in the system logs, you'll find:
EXT4-fs (vdc): Unrecognized mount option "fast_commit" or missing value
Fixes: 995a3ed67fc8 ("ext4: add fast_commit feature and handling for extended mount options")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Alexei Starovoitov says:
====================
1) libbpf should not attempt to load unused subprogs, from Andrii.
2) Make strncpy_from_user() mask out bytes after NUL terminator, from Daniel.
3) Relax return code check for subprograms in the BPF verifier, from Dmitrii.
4) Fix several sockmap issues, from John.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
fail_function: Remove a redundant mutex unlock
selftest/bpf: Test bpf_probe_read_user_str() strips trailing bytes after NUL
lib/strncpy_from_user.c: Mask out bytes after NUL terminator.
libbpf: Fix VERSIONED_SYM_COUNT number parsing
bpf, sockmap: Avoid failures from skb_to_sgvec when skb has frag_list
bpf, sockmap: Handle memory acct if skb_verdict prog redirects to self
bpf, sockmap: Avoid returning unneeded EAGAIN when redirecting to self
bpf, sockmap: Use truesize with sk_rmem_schedule()
bpf, sockmap: Ensure SO_RCVBUF memory is observed on ingress redirect
bpf, sockmap: Fix partial copy_page_to_iter so progress can still be made
selftests/bpf: Fix error return code in run_getsockopt_test()
bpf: Relax return code check for subprograms
tools, bpftool: Add missing close before bpftool net attach exit
MAINTAINERS/bpf: Update Andrii's entry.
selftests/bpf: Fix unused attribute usage in subprogs_unused test
bpf: Fix unsigned 'datasec_id' compared with zero in check_pseudo_btf_id
bpf: Fix passing zero to PTR_ERR() in bpf_btf_printf_prepare
libbpf: Don't attempt to load unused subprog as an entry-point BPF program
====================
Link: https://lore.kernel.org/r/20201119200721.288-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Forcing mocs:1 [used for our winsys follows-pte mode] to be cached
caused display glitches. Though it is documented as deprecated (and so
likely behaves as uncached) use the follow-pte bit and force it out of
L3 cache.
Testcase: igt/kms_frontbuffer_tracking
Testcase: igt/kms_big_fb
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ayaz A Siddiqui <ayaz.siddiqui@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201015122138.30161-4-chris@chris-wilson.co.uk
(cherry picked from commit a04ac827366594c7244f60e9be79fcb404af69f0)
Fixes: 849c0fe9e831 ("drm/i915/gt: Initialize reserved and unspecified MOCS indices")
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
[Rodrigo: Updated Fixes tag]
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git://people.freedesktop.org/~agd5f/linux into drm-fixes
amd-drm-fixes-5.10-2020-11-18:
amdgpu:
- Pageflip fix for navi1x with 5 or 6 displays
- Remove experimental flag for Arcturus
- Fix regression in atomic commit tail rework
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201118213646.4015-1-alexander.deucher@amd.com
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Fix a mutex_unlock() issue where before copy_from_user() is
not called mutex_locked.
Fixes: 4b1a29a7f542 ("error-injection: Support fault injection framework")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Luo Meng <luomeng12@huawei.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lore.kernel.org/bpf/160570737118.263807.8358435412898356284.stgit@devnote2
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Daniel Xu says:
====================
6ae08ae3dea2 ("bpf: Add probe_read_{user, kernel} and probe_read_{user,
kernel}_str helpers") introduced a subtle bug where
bpf_probe_read_user_str() would potentially copy a few extra bytes after
the NUL terminator.
This issue is particularly nefarious when strings are used as map keys,
as seemingly identical strings can occupy multiple entries in a map.
This patchset fixes the issue and introduces a selftest to prevent
future regressions.
v6 -> v7:
* Add comments
v5 -> v6:
* zero-pad up to sizeof(unsigned long) after NUL
v4 -> v5:
* don't read potentially uninitialized memory
v3 -> v4:
* directly pass userspace pointer to prog
* test more strings of different length
v2 -> v3:
* set pid filter before attaching prog in selftest
* use long instead of int as bpf_probe_read_user_str() retval
* style changes
v1 -> v2:
* add Fixes: tag
* add selftest
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Previously, bpf_probe_read_user_str() could potentially overcopy the
trailing bytes after the NUL due to how do_strncpy_from_user() does the
copy in long-sized strides. The issue has been fixed in the previous
commit.
This commit adds a selftest that ensures we don't regress
bpf_probe_read_user_str() again.
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/4d977508fab4ec5b7b574b85bdf8b398868b6ee9.1605642949.git.dxu@dxuuu.xyz
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do_strncpy_from_user() may copy some extra bytes after the NUL
terminator into the destination buffer. This usually does not matter for
normal string operations. However, when BPF programs key BPF maps with
strings, this matters a lot.
A BPF program may read strings from user memory by calling the
bpf_probe_read_user_str() helper which eventually calls
do_strncpy_from_user(). The program can then key a map with the
destination buffer. BPF map keys are fixed-width and string-agnostic,
meaning that map keys are treated as a set of bytes.
The issue is when do_strncpy_from_user() overcopies bytes after the NUL
terminator, it can result in seemingly identical strings occupying
multiple slots in a BPF map. This behavior is subtle and totally
unexpected by the user.
This commit masks out the bytes following the NUL while preserving
long-sized stride in the fast path.
Fixes: 6ae08ae3dea2 ("bpf: Add probe_read_{user, kernel} and probe_read_{user, kernel}_str helpers")
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/21efc982b3e9f2f7b0379eed642294caaa0c27a7.1605642949.git.dxu@dxuuu.xyz
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fixes for CVE-2020-4788.
From Daniel's cover letter:
IBM Power9 processors can speculatively operate on data in the L1
cache before it has been completely validated, via a way-prediction
mechanism. It is not possible for an attacker to determine the
contents of impermissible memory using this method, since these
systems implement a combination of hardware and software security
measures to prevent scenarios where protected data could be leaked.
However these measures don't address the scenario where an attacker
induces the operating system to speculatively execute instructions
using data that the attacker controls. This can be used for example to
speculatively bypass "kernel user access prevention" techniques, as
discovered by Anthony Steinhauser of Google's Safeside Project. This
is not an attack by itself, but there is a possibility it could be
used in conjunction with side-channels or other weaknesses in the
privileged code to construct an attack.
This issue can be mitigated by flushing the L1 cache between privilege
boundaries of concern.
This patch series flushes the L1 cache on kernel entry (patch 2) and
after the kernel performs any user accesses (patch 3). It also adds a
self-test and performs some related cleanups"
* tag 'powerpc-cve-2020-4788' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: rename pnv|pseries_setup_rfi_flush to _setup_security_mitigations
selftests/powerpc: refactor entry and rfi_flush tests
selftests/powerpc: entry flush test
powerpc: Only include kup-radix.h for 64-bit Book3S
powerpc/64s: flush L1D after user accesses
powerpc/64s: flush L1D on kernel entry
selftests/powerpc: rfi_flush: disable entry flush if present
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