- 2 minor DT fixes
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQIcBAABCAAGBQJZf0PMAAoJEFk3GJrT+8ZlJskP/0JXcJt1I4myJv9A9z/+t0nh
7vT8H/ZwSyvK+/Iq1ccrf0Abe/c3445yHCwnF0T87R14A+oVVML5+uDolHIRZjlf
Wka34OoZFR9qTjphsFfQdZ0YcId7+a3BXNyvdkIWytWB+tzy/gpvlExBd54wJy0c
rceTEJsdmyObBFTmMTdlTzKQYLvurWoZ7d/N+T81UD3g0Xmq0EIOk0pEHSThK4SS
yQQWfRu7PCWDfXVu7qImalniaSa6wriHFC8hnrmaLfm2a9axfrTpvVknYuZUROlj
3T0Hgq3YHYe+BpS1P1Wryh60Yc8umbGy5JYg4GFOlNEGT9lBflk7nyG25aAbtwXY
BUU/r1cA1K+wR3XbUK9dpxW0GeCDTsQkHY9SA6+Aj5utNcMVhlnmGAHxJX9j1a8n
OhZtk339oCuBaf2Eg67OLvNGCPN21LAr2PL22LEGWkKSEUI61/1ZP1jjuCjN8Yk0
spXdFshdkYJyMqA4VuR05R5sBgqO25hXVDB2RYE4OuKINvAOfckgY9XpUhndxuYx
VVfX1up4bwoAUzVR+7XIsVrHaDR8pNS/Uv6kbhfB3X2c/jyPD1/Rc3T8p5DYirt7
DUPv8MJm/cwEC6uinQyqHTgB0tYLTWEY2+sv8NI2u8geYoJZO+Kt/12f3gcx296e
82LIlHnYKfYqUaqFwRRJ
=Z5d3
-----END PGP SIGNATURE-----
Merge tag 'amlogic-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into fixes
Pull "Amlogic fixes for v4.13-rc" from Kevin Hilman:
- 2 minor DT fixes
* tag 'amlogic-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
ARM64: dts: meson-gxl-s905x-libretech-cc: fixup board definition
ARM64: dts: meson-gx: use specific compatible for the AO pwms
showed a wrong value, so fix it before it gets copy-pasted
to much.
-----BEGIN PGP SIGNATURE-----
iQFEBAABCAAuFiEE7v+35S2Q1vLNA3Lx86Z5yZzRHYEFAlmEM5wQHGhlaWtvQHNu
dGVjaC5kZQAKCRDzpnnJnNEdgVn+B/9Xy9km3t8cFVQ//SjNm1MEfiyVrgCnH6TH
trLit6AKq19LTIfeyI2RQucEXB0Csw2+YNh4q9Td6utnc0S3OpzueFsfKfAD9xif
WpRR6MJjCSlIQfhd09XuKyWoDwwNmnidv+Xd/H3M83dTOzoPmy0aDkn/shc1I+Tw
gL0CbLPz1HuHuG55S5EkxcBNi/Mj34qI5e3O8hrqzpfzmc1CdQ38zblfkiyu94v7
f/sVUv8p2YHyfvIJ1n1DxQx7lvAxGzo3Q7fXqS9D1jJx4iDWWFaraLMPu3NztLcv
1XrawJTdGZ9vTJSmzcEwH7JeAUHX41wIWjf/jEx9iE2R9EY0lyLo
=B0nU
-----END PGP SIGNATURE-----
Merge tag 'v4.13-rockchip-dts32fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Pull "Rockchip dts32 fixes for 4.13" from Heiko Stübner:
Fix for the recently added mali dt support. The example
showed a wrong value, so fix it before it gets copy-pasted
to much.
* tag 'v4.13-rockchip-dts32fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: dts: rockchip: fix mali gpu node on rk3288
dt-bindings: gpu: drop wrong compatible from midgard binding example
If the decrementer wraps again and de-asserts the decrementer
exception while hard-disabled, __check_irq_replay() has a test to
notice the wrap when interrupts are re-enabled.
The decrementer check must be done when clearing the PACA_IRQ_HARD_DIS
flag, not when the PACA_IRQ_DEC flag is tested. Previously this worked
because the decrementer interrupt was always the first one checked
after clearing the hard disable flag, but HMI check was moved ahead of
that, which introduced this bug.
This can cause a missed decrementer interrupt if we soft-disable
interrupts then take an HMI which is recorded in irq_happened, then
hard-disable interrupts for > 4s to wrap the decrementer.
Fixes: e0e0d6b739 ("powerpc/64: Replay hypervisor maintenance interrupt first")
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
POWER9 DD2 PMU can stop after a state-loss idle in some conditions.
A solution is to set then clear MMCRA[60] after wake from state-loss
idle. MMCRA[60] is a non-architected bit, see the user manual for
details.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Acked-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Just a few small fixes for 4.13.
* 'drm-fixes-4.13' of git://people.freedesktop.org/~agd5f/linux:
drm/amdgpu: Use list_del_init in amdgpu_mn_unregister
drm/amdgpu: Fix undue fallthroughs in golden registers initialization
drm/amdgpu: fix header on gfx9 clear state
Merge misc fixes from Andrew Morton:
"15 fixes"
[ This does not merge the "fortify: use WARN instead of BUG for now"
patch, which needs a bit of extra work to build cleanly with all
configurations. Arnd is on it. - Linus ]
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
ocfs2: don't clear SGID when inheriting ACLs
mm: allow page_cache_get_speculative in interrupt context
userfaultfd: non-cooperative: flush event_wqh at release time
ipc: add missing container_of()s for randstruct
cpuset: fix a deadlock due to incomplete patching of cpusets_enabled()
userfaultfd_zeropage: return -ENOSPC in case mm has gone
mm: take memory hotplug lock within numa_zonelist_order_handler()
mm/page_io.c: fix oops during block io poll in swapin path
zram: do not free pool->size_class
kthread: fix documentation build warning
kasan: avoid -Wmaybe-uninitialized warning
userfaultfd: non-cooperative: notify about unmap of destination during mremap
mm, mprotect: flush TLB if potentially racing with a parallel reclaim leaving stale TLB entries
pid: kill pidhash_size in pidhash_init()
mm/hugetlb.c: __get_user_pages ignores certain follow_hugetlb_page errors
- Fix a device ID of Hisilicon Hip07/08 in the ACPI APD (AMD SoC)
driver (Hanjun Guo).
- Fix list corruption (introduced during the 4.11 cycle) in the ACPI
LPSS (Intel SoC) driver (Hans de Goede).
- Fix PCC mailbox handling code crash during initialization when
PCCT is not present and PCC channel 0 is requested (Hoan Tran).
- Fix a WDAT watchdog initialization issue causing platform device
creation to fail due to partially overlapping address ranges in
resources (Ryan Kennedy).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=ZD/q
-----END PGP SIGNATURE-----
Merge tag 'acpi-4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix two issues in the ACPI SoC drivers (Intel LPSS and AMD APD),
a crash in the PCC mailbox initialization code and a WDAT watchdog
initialization failure.
Specifics:
- Fix a device ID of Hisilicon Hip07/08 in the ACPI APD (AMD SoC)
driver (Hanjun Guo).
- Fix list corruption (introduced during the 4.11 cycle) in the ACPI
LPSS (Intel SoC) driver (Hans de Goede).
- Fix PCC mailbox handling code crash during initialization when PCCT
is not present and PCC channel 0 is requested (Hoan Tran).
- Fix a WDAT watchdog initialization issue causing platform device
creation to fail due to partially overlapping address ranges in
resources (Ryan Kennedy)"
* tag 'acpi-4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: APD: Fix HID for Hisilicon Hip07/08
mailbox: pcc: Fix crash when request PCC channel 0
ACPI / watchdog: Fix init failure with overlapping register regions
ACPI / LPSS: Only call pwm_add_table() for the first PWM controller
- Fix the handling of the scaling_cur_freq cpufreq policy attribute
on x86 systems with the MPERF/APERF registers present to make it
behave more as expected after recent changes (Rafael Wysocki).
- Drop a leftover callback from the intel_pstate driver which also
prevents the cpuinfo_cur_freq cpufreq policy attribute from being
incorrectly exposed when intel_pstate works in the active mode
(Rafael Wysocki).
- Add a missing piece describing the cpuinfo_cur_freq policy
attribute to cpufreq documentation (Rafael Wysocki).
- Fix up a recently added part of the Thunderbolt driver to avoid
aborting system suspends if its mailbox commands time out (Rafael
Wysocki).
- Update device runtime PM framework documentation to reflect the
current behavior of the code (Johan Hovold).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=j2UJ
-----END PGP SIGNATURE-----
Merge tag 'pm-4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix two cpufreq issues, one introduced recently and one related
to recent changes, fix cpufreq documentation, fix up recently added
code in the Thunderbolt driver and update runtime PM framework
documentation.
Specifics:
- Fix the handling of the scaling_cur_freq cpufreq policy attribute
on x86 systems with the MPERF/APERF registers present to make it
behave more as expected after recent changes (Rafael Wysocki).
- Drop a leftover callback from the intel_pstate driver which also
prevents the cpuinfo_cur_freq cpufreq policy attribute from being
incorrectly exposed when intel_pstate works in the active mode
(Rafael Wysocki).
- Add a missing piece describing the cpuinfo_cur_freq policy
attribute to cpufreq documentation (Rafael Wysocki).
- Fix up a recently added part of the Thunderbolt driver to avoid
aborting system suspends if its mailbox commands time out (Rafael
Wysocki).
- Update device runtime PM framework documentation to reflect the
current behavior of the code (Johan Hovold)"
* tag 'pm-4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thunderbolt: icm: Ignore mailbox errors in icm_suspend()
cpufreq: x86: Make scaling_cur_freq behave more as expected
PM / runtime: Document new pm_runtime_set_suspended() constraint
cpufreq: docs: Add missing cpuinfo_cur_freq description
cpufreq: intel_pstate: Drop ->get from intel_pstate structure
- Yet another race with VM destruction plugged
- A set of small vgic fixes
-----BEGIN PGP SIGNATURE-----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=TMR9
-----END PGP SIGNATURE-----
Merge tag 'kvm-arm-for-v4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm
KVM/ARM Fixes for v4.13-rc4
- Yet another race with VM destruction plugged
- A set of small vgic fixes
There is a small chance that the compiler could generate separate loads
for the dist->propbaser which could be modified from another CPU. As we
want to make sure we atomically update the entire value, and don't race
with other updates, guarantee that the cmpxchg operation compares
against the original value.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
------------[ cut here ]------------
WARNING: CPU: 5 PID: 2288 at arch/x86/kvm/vmx.c:11124 nested_vmx_vmexit+0xd64/0xd70 [kvm_intel]
CPU: 5 PID: 2288 Comm: qemu-system-x86 Not tainted 4.13.0-rc2+ #7
RIP: 0010:nested_vmx_vmexit+0xd64/0xd70 [kvm_intel]
Call Trace:
vmx_check_nested_events+0x131/0x1f0 [kvm_intel]
? vmx_check_nested_events+0x131/0x1f0 [kvm_intel]
kvm_arch_vcpu_ioctl_run+0x5dd/0x1be0 [kvm]
? vmx_vcpu_load+0x1be/0x220 [kvm_intel]
? kvm_arch_vcpu_load+0x62/0x230 [kvm]
kvm_vcpu_ioctl+0x340/0x700 [kvm]
? kvm_vcpu_ioctl+0x340/0x700 [kvm]
? __fget+0xfc/0x210
do_vfs_ioctl+0xa4/0x6a0
? __fget+0x11d/0x210
SyS_ioctl+0x79/0x90
do_syscall_64+0x8f/0x750
? trace_hardirqs_on_thunk+0x1a/0x1c
entry_SYSCALL64_slow_path+0x25/0x25
This can be reproduced by booting L1 guest w/ 'noapic' grub parameter, which
means that tells the kernel to not make use of any IOAPICs that may be present
in the system.
Actually external_intr variable in nested_vmx_vmexit() is the req_int_win
variable passed from vcpu_enter_guest() which means that the L0's userspace
requests an irq window. I observed the scenario (!kvm_cpu_has_interrupt(vcpu) &&
L0's userspace reqeusts an irq window) is true, so there is no interrupt which
L1 requires to inject to L2, we should not attempt to emualte "Acknowledge
interrupt on exit" for the irq window requirement in this scenario.
This patch fixes it by not attempt to emulate "Acknowledge interrupt on exit"
if there is no L1 requirement to inject an interrupt to L2.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
[Added code comment to make it obvious that the behavior is not correct.
We should do a userspace exit with open interrupt window instead of the
nested VM exit. This patch still improves the behavior, so it was
accepted as a (temporary) workaround.]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
The commit 304419d8a7 ("mmc: core: Allocate per-request data using the
block layer core") refactored mechanism of queue handling caused
mmc_init_request() can be called just after mmc_cleanup_queue() caused null
pointer dereference.
Another commit bbdc74dc19 ("mmc: block: Prevent new req entering queue
after its cleanup") tried to fix the problem. However it actually miss one
corner case.
We could still reproduce the issue mentioned with these steps:
(1) insert a SD card and mount it
(2) hotplug it, so it will leave md->usage still be counted
(3) reboot the system which will sync data and umount the card
[Unable to handle kernel NULL pointer dereference at virtual address
00000000
[user pgtable: 4k pages, 48-bit VAs, pgd = ffff80007bab3000
[[0000000000000000] *pgd=000000007a828003, *pud=0000000078dce003,
*pmd=000000007aab6003, *pte=0000000000000000
[Internal error: Oops: 96000007 [#1] PREEMPT SMP
[Modules linked in:
[CPU: 3 PID: 3507 Comm: umount Tainted: G W
4.13.0-rc1-next-20170720-00012-g9d9bf45 #33
[Hardware name: Firefly-RK3399 Board (DT)
[task: ffff80007a1de200 task.stack: ffff80007a01c000
[PC is at mmc_init_request+0x14/0xc4
[LR is at alloc_request_size+0x4c/0x74
[pc : [<ffff0000087d7150>] lr : [<ffff000008378fe0>] pstate: 600001c5
[sp : ffff80007a01f8f0
....
[[<ffff0000087d7150>] mmc_init_request+0x14/0xc4
[[<ffff000008378fe0>] alloc_request_size+0x4c/0x74
[[<ffff00000817ac28>] mempool_create_node+0xb8/0x17c
[[<ffff00000837aadc>] blk_init_rl+0x9c/0x120
[[<ffff000008396580>] blkg_alloc+0x110/0x234
[[<ffff000008396ac8>] blkg_create+0x424/0x468
[[<ffff00000839877c>] blkg_lookup_create+0xd8/0x14c
[[<ffff0000083796bc>] generic_make_request_checks+0x368/0x3b0
[[<ffff00000837b050>] generic_make_request+0x1c/0x240
So mmc_blk_put wouldn't calling blk_cleanup_queue which actually the
QUEUE_FLAG_DYING and QUEUE_FLAG_BYPASS should stay. Block core expect
blk_queue_bypass_{start, end} internally to bypass/drain the queue before
actually dying the queue, so it didn't expose API to set the queue bypass.
I think we should set QUEUE_FLAG_BYPASS whenever queue is removed, although
the md->usage is still counted, as no dispatch queue could be found then.
Fixes: 304419d8a7 ("mmc: core: Allocate per-request data using the block layer core")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
When the device is non removable, the card detect signal is often used
for another purpose i.e. muxed to another SoC peripheral or used as a
GPIO. It could lead to wrong behaviors depending the default value of
this signal if not muxed to the SDHCI controller.
Fixes: bb5f8ea4d5 ("mmc: sdhci-of-at91: introduce driver for the Atmel SDMMC")
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Stable fix:
- Fix EXCHANGE_ID corrupt verifier issue
Other fix:
- Fix double frees in nfs4_test_session_trunk()
-----BEGIN PGP SIGNATURE-----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=Ddq9
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-4.13-4' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client fixes from Anna Schumaker:
"Two fixes from Trond this time, now that he's back from his vacation.
The first is a stable fix for the EXCHANGE_ID issue on the mailing
list, and the other fixes a double-free situation that he found at the
same time.
Stable fix:
- Fix EXCHANGE_ID corrupt verifier issue
Other fix:
- Fix double frees in nfs4_test_session_trunk()"
* tag 'nfs-for-4.13-4' of git://git.linux-nfs.org/projects/anna/linux-nfs:
NFSv4: Fix double frees in nfs4_test_session_trunk()
NFSv4: Fix EXCHANGE_ID corrupt verifier issue
This fixes a potential buffer overflow in isdn_net.c caused by an
unbounded strcpy.
[ ISDN seems to be effectively unmaintained, and the I4L driver in
particular is long deprecated, but in case somebody uses this..
- Linus ]
Signed-off-by: Jiten Thakkar <jitenmt@gmail.com>
Signed-off-by: Annie Cherkaev <annie.cherk@gmail.com>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently a bug in the sci_clk_get implementation causes it to always
return a clock belonging to the last device in the static list of clock
data. This is due to a bug in the init code that causes the array
used by sci_clk_get to only be populated with the clocks for the last
device, as each device overwrites the entire array with its own clocks.
Fix this by calculating the actual number of clocks for the SoC, and
allocating the whole array in one go. Also, we don't need the handle
to the init data array anymore after doing this, instead we can
just compare the dev_id / clk_id against the registered clocks and
use binary search for speed.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Reported-by: Dave Gerlach <d-gerlach@ti.com>
Fixes: b745c0794e ("clk: keystone: Add sci-clk driver support")
Cc: Nishanth Menon <nm@ti.com>
Tested-by: Franklin Cooper <fcooper@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
When new directory 'DIR1' is created in a directory 'DIR0' with SGID bit
set, DIR1 is expected to have SGID bit set (and owning group equal to
the owning group of 'DIR0'). However when 'DIR0' also has some default
ACLs that 'DIR1' inherits, setting these ACLs will result in SGID bit on
'DIR1' to get cleared if user is not member of the owning group.
Fix the problem by moving posix_acl_update_mode() out of ocfs2_set_acl()
into ocfs2_iop_set_acl(). That way the function will not be called when
inheriting ACLs which is what we want as it prevents SGID bit clearing
and the mode has been properly set by posix_acl_create() anyway. Also
posix_acl_chmod() that is calling ocfs2_set_acl() takes care of updating
mode itself.
Fixes: 073931017b ("posix_acl: Clear SGID bit when setting file permissions")
Link: http://lkml.kernel.org/r/20170801141252.19675-3-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kernel panic when calling the IRQ-safe __get_user_pages_fast in NMI
handler.
The bug was introduced by commit 2947ba054a ("x86/mm/gup: Switch GUP
to the generic get_user_page_fast() implementation").
The original x86 __get_user_page_fast used plain get_page() or
page_ref_add(). However, the generic __get_user_page_fast uses
page_cache_get_speculative(), which has VM_BUG_ON(in_interrupt()).
There is no reason to prevent page_cache_get_speculative from using in
interrupt context. According to the author, putting a BUG_ON there is
just because the code is not verifying correctness of interrupt races.
I did some tests in interrupt context. There is no issue found.
Removing VM_BUG_ON(in_interrupt()) for page_cache_get_speculative().
Link: http://lkml.kernel.org/r/1501609146-59730-1-git-send-email-kan.liang@intel.com
Fixes: 2947ba054a ("x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation")
Signed-off-by: Kan Liang <kan.liang@intel.com>
Cc: Jens Axboe <axboe@fb.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Ying Huang <ying.huang@intel.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There may still be threads waiting on event_wqh at the time the
userfault file descriptor is closed. Flush the events wait-queue to
prevent waiting threads from hanging.
Link: http://lkml.kernel.org/r/1501398127-30419-1-git-send-email-rppt@linux.vnet.ibm.com
Fixes: 9cd75c3cd4 ("userfaultfd: non-cooperative: add ability to report
non-PF events from uffd descriptor")
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When building with the randstruct gcc plugin, the layout of the IPC
structs will be randomized, which requires any sub-structure accesses to
use container_of(). The proc display handlers were missing the needed
container_of()s since the iterator is passing in the top-level struct
kern_ipc_perm.
This would lead to crashes when running the "lsipc" program after the
system had IPC registered (e.g. after starting up Gnome):
general protection fault: 0000 [#1] PREEMPT SMP
...
RIP: 0010:shm_add_rss_swap.isra.1+0x13/0xa0
...
Call Trace:
sysvipc_shm_proc_show+0x5e/0x150
sysvipc_proc_show+0x1a/0x30
seq_read+0x2e9/0x3f0
...
Link: http://lkml.kernel.org/r/20170730205950.GA55841@beast
Fixes: 3859a271a0 ("randstruct: Mark various structs for randomization")
Signed-off-by: Kees Cook <keescook@chromium.org>
Reported-by: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In codepaths that use the begin/retry interface for reading
mems_allowed_seq with irqs disabled, there exists a race condition that
stalls the patch process after only modifying a subset of the
static_branch call sites.
This problem manifested itself as a deadlock in the slub allocator,
inside get_any_partial. The loop reads mems_allowed_seq value (via
read_mems_allowed_begin), performs the defrag operation, and then
verifies the consistency of mem_allowed via the read_mems_allowed_retry
and the cookie returned by xxx_begin.
The issue here is that both begin and retry first check if cpusets are
enabled via cpusets_enabled() static branch. This branch can be
rewritted dynamically (via cpuset_inc) if a new cpuset is created. The
x86 jump label code fully synchronizes across all CPUs for every entry
it rewrites. If it rewrites only one of the callsites (specifically the
one in read_mems_allowed_retry) and then waits for the
smp_call_function(do_sync_core) to complete while a CPU is inside the
begin/retry section with IRQs off and the mems_allowed value is changed,
we can hang.
This is because begin() will always return 0 (since it wasn't patched
yet) while retry() will test the 0 against the actual value of the seq
counter.
The fix is to use two different static keys: one for begin
(pre_enable_key) and one for retry (enable_key). In cpuset_inc(), we
first bump the pre_enable key to ensure that cpuset_mems_allowed_begin()
always return a valid seqcount if are enabling cpusets. Similarly, when
disabling cpusets via cpuset_dec(), we first ensure that callers of
cpuset_mems_allowed_retry() will start ignoring the seqcount value
before we let cpuset_mems_allowed_begin() return 0.
The relevant stack traces of the two stuck threads:
CPU: 1 PID: 1415 Comm: mkdir Tainted: G L 4.9.36-00104-g540c51286237 #4
Hardware name: Default string Default string/Hardware, BIOS 4.29.1-20170526215256 05/26/2017
task: ffff8817f9c28000 task.stack: ffffc9000ffa4000
RIP: smp_call_function_many+0x1f9/0x260
Call Trace:
smp_call_function+0x3b/0x70
on_each_cpu+0x2f/0x90
text_poke_bp+0x87/0xd0
arch_jump_label_transform+0x93/0x100
__jump_label_update+0x77/0x90
jump_label_update+0xaa/0xc0
static_key_slow_inc+0x9e/0xb0
cpuset_css_online+0x70/0x2e0
online_css+0x2c/0xa0
cgroup_apply_control_enable+0x27f/0x3d0
cgroup_mkdir+0x2b7/0x420
kernfs_iop_mkdir+0x5a/0x80
vfs_mkdir+0xf6/0x1a0
SyS_mkdir+0xb7/0xe0
entry_SYSCALL_64_fastpath+0x18/0xad
...
CPU: 2 PID: 1 Comm: init Tainted: G L 4.9.36-00104-g540c51286237 #4
Hardware name: Default string Default string/Hardware, BIOS 4.29.1-20170526215256 05/26/2017
task: ffff8818087c0000 task.stack: ffffc90000030000
RIP: int3+0x39/0x70
Call Trace:
<#DB> ? ___slab_alloc+0x28b/0x5a0
<EOE> ? copy_process.part.40+0xf7/0x1de0
__slab_alloc.isra.80+0x54/0x90
copy_process.part.40+0xf7/0x1de0
copy_process.part.40+0xf7/0x1de0
kmem_cache_alloc_node+0x8a/0x280
copy_process.part.40+0xf7/0x1de0
_do_fork+0xe7/0x6c0
_raw_spin_unlock_irq+0x2d/0x60
trace_hardirqs_on_caller+0x136/0x1d0
entry_SYSCALL_64_fastpath+0x5/0xad
do_syscall_64+0x27/0x350
SyS_clone+0x19/0x20
do_syscall_64+0x60/0x350
entry_SYSCALL64_slow_path+0x25/0x25
Link: http://lkml.kernel.org/r/20170731040113.14197-1-dmitriyz@waymo.com
Fixes: 46e700abc4 ("mm, page_alloc: remove unnecessary taking of a seqlock when cpusets are disabled")
Signed-off-by: Dima Zavin <dmitriyz@waymo.com>
Reported-by: Cliff Spradlin <cspradlin@waymo.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christopher Lameter <cl@linux.com>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In the non-cooperative userfaultfd case, the process exit may race with
outstanding mcopy_atomic called by the uffd monitor. Returning -ENOSPC
instead of -EINVAL when mm is already gone will allow uffd monitor to
distinguish this case from other error conditions.
Unfortunately I overlooked userfaultfd_zeropage when updating
userfaultd_copy().
Link: http://lkml.kernel.org/r/1501136819-21857-1-git-send-email-rppt@linux.vnet.ibm.com
Fixes: 96333187ab ("userfaultfd_copy: return -ENOSPC in case mm has gone")
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andre Wild reported the following warning:
WARNING: CPU: 2 PID: 1205 at kernel/cpu.c:240 lockdep_assert_cpus_held+0x4c/0x60
Modules linked in:
CPU: 2 PID: 1205 Comm: bash Not tainted 4.13.0-rc2-00022-gfd2b2c57ec20 #10
Hardware name: IBM 2964 N96 702 (z/VM 6.4.0)
task: 00000000701d8100 task.stack: 0000000073594000
Krnl PSW : 0704f00180000000 0000000000145e24 (lockdep_assert_cpus_held+0x4c/0x60)
...
Call Trace:
lockdep_assert_cpus_held+0x42/0x60)
stop_machine_cpuslocked+0x62/0xf0
build_all_zonelists+0x92/0x150
numa_zonelist_order_handler+0x102/0x150
proc_sys_call_handler.isra.12+0xda/0x118
proc_sys_write+0x34/0x48
__vfs_write+0x3c/0x178
vfs_write+0xbc/0x1a0
SyS_write+0x66/0xc0
system_call+0xc4/0x2b0
locks held by bash/1205:
#0: (sb_writers#4){.+.+.+}, at: vfs_write+0xa6/0x1a0
#1: (zl_order_mutex){+.+...}, at: numa_zonelist_order_handler+0x44/0x150
#2: (zonelists_mutex){+.+...}, at: numa_zonelist_order_handler+0xf4/0x150
Last Breaking-Event-Address:
lockdep_assert_cpus_held+0x48/0x60
This can be easily triggered with e.g.
echo n > /proc/sys/vm/numa_zonelist_order
In commit 3f906ba236 ("mm/memory-hotplug: switch locking to a percpu
rwsem") memory hotplug locking was changed to fix a potential deadlock.
This also switched the stop_machine() invocation within
build_all_zonelists() to stop_machine_cpuslocked() which now expects
that online cpus are locked when being called.
This assumption is not true if build_all_zonelists() is being called
from numa_zonelist_order_handler().
In order to fix this simply add a mem_hotplug_begin()/mem_hotplug_done()
pair to numa_zonelist_order_handler().
Link: http://lkml.kernel.org/r/20170726111738.38768-1-heiko.carstens@de.ibm.com
Fixes: 3f906ba236 ("mm/memory-hotplug: switch locking to a percpu rwsem")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reported-by: Andre Wild <wild@linux.vnet.ibm.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The kerneldoc comment for kthread_create() had an incorrect argument
name, leading to a warning in the docs build.
Correct it, and make one more small step toward a warning-free build.
Link: http://lkml.kernel.org/r/20170724135916.7f486c6f@lwn.net
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
gcc-7 produces this warning:
mm/kasan/report.c: In function 'kasan_report':
mm/kasan/report.c:351:3: error: 'info.first_bad_addr' may be used uninitialized in this function [-Werror=maybe-uninitialized]
print_shadow_for_address(info->first_bad_addr);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mm/kasan/report.c:360:27: note: 'info.first_bad_addr' was declared here
The code seems fine as we only print info.first_bad_addr when there is a
shadow, and we always initialize it in that case, but this is relatively
hard for gcc to figure out after the latest rework.
Adding an intialization to the most likely value together with the other
struct members shuts up that warning.
Fixes: b235b9808664 ("kasan: unify report headers")
Link: https://patchwork.kernel.org/patch/9641417/
Link: http://lkml.kernel.org/r/20170725152739.4176967-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Alexander Potapenko <glider@google.com>
Suggested-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When mremap is called with MREMAP_FIXED it unmaps memory at the
destination address without notifying userfaultfd monitor.
If the destination were registered with userfaultfd, the monitor has no
way to distinguish between the old and new ranges and to properly relate
the page faults that would occur in the destination region.
Fixes: 897ab3e0c4 ("userfaultfd: non-cooperative: add event for memory unmaps")
Link: http://lkml.kernel.org/r/1500276876-3350-1-git-send-email-rppt@linux.vnet.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Acked-by: Pavel Emelyanov <xemul@virtuozzo.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Nadav Amit identified a theoritical race between page reclaim and
mprotect due to TLB flushes being batched outside of the PTL being held.
He described the race as follows:
CPU0 CPU1
---- ----
user accesses memory using RW PTE
[PTE now cached in TLB]
try_to_unmap_one()
==> ptep_get_and_clear()
==> set_tlb_ubc_flush_pending()
mprotect(addr, PROT_READ)
==> change_pte_range()
==> [ PTE non-present - no flush ]
user writes using cached RW PTE
...
try_to_unmap_flush()
The same type of race exists for reads when protecting for PROT_NONE and
also exists for operations that can leave an old TLB entry behind such
as munmap, mremap and madvise.
For some operations like mprotect, it's not necessarily a data integrity
issue but it is a correctness issue as there is a window where an
mprotect that limits access still allows access. For munmap, it's
potentially a data integrity issue although the race is massive as an
munmap, mmap and return to userspace must all complete between the
window when reclaim drops the PTL and flushes the TLB. However, it's
theoritically possible so handle this issue by flushing the mm if
reclaim is potentially currently batching TLB flushes.
Other instances where a flush is required for a present pte should be ok
as either the page lock is held preventing parallel reclaim or a page
reference count is elevated preventing a parallel free leading to
corruption. In the case of page_mkclean there isn't an obvious path
that userspace could take advantage of without using the operations that
are guarded by this patch. Other users such as gup as a race with
reclaim looks just at PTEs. huge page variants should be ok as they
don't race with reclaim. mincore only looks at PTEs. userfault also
should be ok as if a parallel reclaim takes place, it will either fault
the page back in or read some of the data before the flush occurs
triggering a fault.
Note that a variant of this patch was acked by Andy Lutomirski but this
was for the x86 parts on top of his PCID work which didn't make the 4.13
merge window as expected. His ack is dropped from this version and
there will be a follow-on patch on top of PCID that will include his
ack.
[akpm@linux-foundation.org: tweak comments]
[akpm@linux-foundation.org: fix spello]
Link: http://lkml.kernel.org/r/20170717155523.emckq2esjro6hf3z@suse.de
Reported-by: Nadav Amit <nadav.amit@gmail.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: <stable@vger.kernel.org> [v4.4+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
After commit 3d375d7859 ("mm: update callers to use HASH_ZERO flag"),
drop unused pidhash_size in pidhash_init().
Link: http://lkml.kernel.org/r/1500389267-49222-1-git-send-email-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Pavel Tatashin <Pasha.Tatashin@Oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 9a291a7c94 ("mm/hugetlb: report -EHWPOISON not -EFAULT when
FOLL_HWPOISON is specified") causes __get_user_pages to ignore certain
errors from follow_hugetlb_page. After such error, __get_user_pages
subsequently calls faultin_page on the same VMA and start address that
follow_hugetlb_page failed on instead of returning the error immediately
as it should.
In follow_hugetlb_page, when hugetlb_fault returns a value covered under
VM_FAULT_ERROR, follow_hugetlb_page returns it without setting nr_pages
to 0 as __get_user_pages expects in this case, which causes the
following to happen in __get_user_pages: the "while (nr_pages)" check
succeeds, we skip the "if (!vma..." check because we got a VMA the last
time around, we find no page with follow_page_mask, and we call
faultin_page, which calls hugetlb_fault for the second time.
This issue also slightly changes how __get_user_pages works. Before, it
only returned error if it had made no progress (i = 0). But now,
follow_hugetlb_page can clobber "i" with an error code since its new
return path doesn't check for progress. So if "i" is nonzero before a
failing call to follow_hugetlb_page, that indication of progress is lost
and __get_user_pages can return error even if some pages were
successfully pinned.
To fix this, change follow_hugetlb_page so that it updates nr_pages,
allowing __get_user_pages to fail immediately and restoring the "error
only if no progress" behavior to __get_user_pages.
Tested that __get_user_pages returns when expected on error from
hugetlb_fault in follow_hugetlb_page.
Fixes: 9a291a7c94 ("mm/hugetlb: report -EHWPOISON not -EFAULT when FOLL_HWPOISON is specified")
Link: http://lkml.kernel.org/r/1500406795-58462-1-git-send-email-daniel.m.jordan@oracle.com
Signed-off-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Acked-by: Punit Agrawal <punit.agrawal@arm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: James Morse <james.morse@arm.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: zhong jiang <zhongjiang@huawei.com>
Cc: <stable@vger.kernel.org> [4.12.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The host physical addresses of L1's Virtual APIC Page and Posted
Interrupt descriptor are loaded into the VMCS02. The CPU may write
to these pages via their host physical address while L2 is running,
bypassing address-translation-based dirty tracking (e.g. EPT write
protection). Mark them dirty on every exit from L2 to prevent them
from getting out of sync with dirty tracking.
Also mark the virtual APIC page and the posted interrupt descriptor
dirty when KVM is virtualizing posted interrupt processing.
Signed-off-by: David Matlack <dmatlack@google.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
According to the Intel SDM, software cannot rely on the current VMCS to be
coherent after a VMXOFF or shutdown. So this is a valid way to handle VMCS12
flushes.
24.11.1 Software Use of Virtual-Machine Control Structures
...
If a logical processor leaves VMX operation, any VMCSs active on
that logical processor may be corrupted (see below). To prevent
such corruption of a VMCS that may be used either after a return
to VMX operation or on another logical processor, software should
execute VMCLEAR for that VMCS before executing the VMXOFF instruction
or removing power from the processor (e.g., as part of a transition
to the S3 and S4 power states).
...
This fixes a "suspicious rcu_dereference_check() usage!" warning during
kvm_vm_release() because nested_release_vmcs12() calls
kvm_vcpu_write_guest_page() without holding kvm->srcu.
Signed-off-by: David Matlack <dmatlack@google.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Since the current implementation of VMCS12 does a memcpy in and out
of guest memory, we do not need current_vmcs12 and current_vmcs12_page
anymore. current_vmptr is enough to read and write the VMCS12.
And David Matlack noted:
This patch also fixes dirty tracking (memslot->dirty_bitmap) of the
VMCS12 page by using kvm_write_guest. nested_release_page() only marks
the struct page dirty.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
[Added David Matlack's note and nested_release_page_clean() fix.]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
During teardown, accesses to memslots and buses are using
rcu_dereference_protected with an always-true condition because
these accesses are done outside the usual mutexes. This
is because the last reference is gone and there cannot be any
concurrent modifications, but rcu_dereference_protected is
ugly and unobvious.
Instead, check the refcount in kvm_get_bus and __kvm_memslots.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
'lapic_irq' is a local variable and its 'level' field isn't
initialized, so 'level' is random, it doesn't matter but
makes UBSAN unhappy:
UBSAN: Undefined behaviour in .../lapic.c:...
load of value 10 is not a valid value for type '_Bool'
...
Call Trace:
[<ffffffff81f030b6>] dump_stack+0x1e/0x20
[<ffffffff81f03173>] ubsan_epilogue+0x12/0x55
[<ffffffff81f03b96>] __ubsan_handle_load_invalid_value+0x118/0x162
[<ffffffffa1575173>] kvm_apic_set_irq+0xc3/0xf0 [kvm]
[<ffffffffa1575b20>] kvm_irq_delivery_to_apic_fast+0x450/0x910 [kvm]
[<ffffffffa15858ea>] kvm_irq_delivery_to_apic+0xfa/0x7a0 [kvm]
[<ffffffffa1517f4e>] kvm_emulate_hypercall+0x62e/0x760 [kvm]
[<ffffffffa113141a>] handle_vmcall+0x1a/0x30 [kvm_intel]
[<ffffffffa114e592>] vmx_handle_exit+0x7a2/0x1fa0 [kvm_intel]
...
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
When SMP VM start, AP may lost INIT because of receiving INIT between
kvm_vcpu_ioctl_x86_get/set_vcpu_events.
vcpu 0 vcpu 1
kvm_vcpu_ioctl_x86_get_vcpu_events
events->smi.latched_init = 0
send INIT to vcpu1
set vcpu1's pending_events
kvm_vcpu_ioctl_x86_set_vcpu_events
if (events->smi.latched_init == 0)
clear INIT in pending_events
This patch fixes it by just update SMM related flags if we are in SMM.
Thanks Peng Hao for the report and original commit message.
Reported-by: Peng Hao <peng.hao2@zte.com.cn>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Otherwise bo->shadow_list (which is aliased by bo->mn_list) will not
appear empty in amdgpu_ttm_bo_destroy and cause an oops when freeing
former userptr BOs.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
As I was staring at the si_init_golden_registers code, I noticed that
the Pitcairn initialization silently falls through the Cape Verde
initialization, and the Oland initialization falls through the Hainan
initialization. However there is no comment stating that this is
intentional, and the radeon driver doesn't have any such fallthrough,
so I suspect this is not supposed to happen.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: 62a3755341 ("drm/amdgpu: add si implementation v10")
Cc: Ken Wang <Qingqing.Wang@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Marek Olšák" <maraeo@gmail.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Flora Cui <Flora.Cui@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
One critical clock fix for sun5i (A10s/A13/R8) which enables propogation
of clock rate changes from the "cpu" clock to it's parent PLL clock.
This fixes cpufreq related crashes that have been observed on KernelCI
with the C.H.I.P. and multi_v7_defconfig.
-----BEGIN PGP SIGNATURE-----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=uoCy
-----END PGP SIGNATURE-----
Merge tag 'sunxi-clk-fixes-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-fixes
Pull one Allwinner clock fix from Chen-Yu Tsai:
One critical clock fix for sun5i (A10s/A13/R8) which enables propagation
of clock rate changes from the "cpu" clock to it's parent PLL clock.
This fixes cpufreq related crashes that have been observed on KernelCI
with the C.H.I.P. and multi_v7_defconfig.
* tag 'sunxi-clk-fixes-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
clk: sunxi-ng: sun5i: Add clk_set_rate_parent to the CPU clock
This seven is mostly minor build, Kconfig and error leg fixes.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=/+Ot
-----END PGP SIGNATURE-----
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"These seven patches are mostly minor build, Kconfig and error leg
fixes"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qedi: Fix return code in qedi_ep_connect()
scsi: lpfc: fix linking against modular NVMe support
scsi: scsi_transport_fc: return -EBUSY for deleted vport
scsi: libcxgbi: add check for valid cxgbi_task_data
scsi: aic7xxx: fix firmware build with O=path
scsi: megaraid_sas: fix memleak in megasas_alloc_cmdlist_fusion
scsi: qedi: Add ISCSI_BOOT_SYSFS to Kconfig
Quite a few fixes here that have been sent since the merge window, the
biggest one is the fix from Tony for some confusion with the device
property API which was causing issues with the of-graph card. This is
fixed with some changes in the graph API itself as it seemed very likely
to be error prone.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCAAxFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAlmB51ATHGJyb29uaWVA
a2VybmVsLm9yZwAKCRAk1otyXVSH0G39B/90DuMEckKIUVTPyIpyHetKl46eFRDJ
9t3EnovAZJX6zZ7bdlkcCg33wGmcIkn9PFfLpPcnbxYeKP0xGah/GGKec1K/aeTn
FiD2LjmO5Cc0adk5tEwqiVrL0cOVrUdXuMpvhoMQqD1EBzsgDQtUpG6EL8SGbrtd
dfSLFDrYHIBO2b3iZOZPJvqMPnh9jJ4zEyBwVpQGOCoQdD/AP5S84McxwGhlJfl4
UqAY8keZYlW/Gl1DSnc8BDDCuLrexdCEUAR/0Vz3QFQk+sSnKVlkE+XXo0L4AVZl
XoDGjB5DL8FjXPG7yKO0rAytFFFzSJCWwBRnESAIGKz9o5HIUfOZtE8Q
=10Px
-----END PGP SIGNATURE-----
Merge tag 'asoc-fix-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.13
Quite a few fixes here that have been sent since the merge window, the
biggest one is the fix from Tony for some confusion with the device
property API which was causing issues with the of-graph card. This is
fixed with some changes in the graph API itself as it seemed very likely
to be error prone.
The number of pins in South Bridge is 30 and not 29. There is a fix for
the driver for the pinctrl, but a fix is also need at device tree level
for the GPIO.
Fixes: afda007fed ("ARM64: dts: marvell: Add pinctrl nodes for Armada
3700")
Cc: <stable@vger.kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
rpc_clnt_add_xprt() expects the callback function to be synchronous, and
expects to release the transport and switch references itself.
Fixes: 04fa2c6bb5 ("NFS pnfs data server multipath session trunking")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Arnd Bergmann
Nicholas Piggin
Dave Airlie
Linus Torvalds
Rafael J. Wysocki
Radim Krčmář
Christoffer Dall
Wanpeng Li
Shawn Lin
Ludovic Desroches
Annie Cherkaev
Tero Kristo
Jan Kara
Kan Liang
Mike Rapoport
Kees Cook
Dima Zavin
Heiko Carstens
Tetsuo Handa
Minchan Kim
Jonathan Corbet
Mel Gorman
Kefeng Wang
Daniel Jordan
David Matlack
Paolo Bonzini
Longpeng(Mike)
Felix Kuehling
Jean Delvare
Stephen Boyd
Takashi Iwai
Gregory CLEMENT
Trond Myklebust