Peter Zijlstra
fb099f3bb4
futex: Fix inode life-time issue ...
commit 8019ad13ef7f64be44d4f892af9c840179009254 upstream.
As reported by Jann, ihold() does not in fact guarantee inode
persistence. And instead of making it so, replace the usage of inode
pointers with a per boot, machine wide, unique inode identifier.
This sequence number is global, but shared (file backed) futexes are
rare enough that this should not become a performance issue.
Reported-by: Jann Horn <jannh@google.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-02 17:20:27 +02:00
ACPICA: Introduce ACPI_ACCESS_BYTE_WIDTH() macro
2020-03-11 07:53:05 +01:00
asm-generic: fix -Wtype-limits compiler warnings
2019-08-25 10:51:50 +02:00
crypto: vmac - separate tfm and request context
2018-08-17 20:59:29 +02:00
drm: mst: Fix query_payload ack reply struct
2020-01-04 13:39:00 +01:00
dt-bindings: reset: meson8b: fix duplicate reset IDs
2020-01-23 08:19:38 +01:00
KEYS: user: Align the payload buffer
2019-02-27 10:07:00 +01:00
arm/arm64: KVM: Add PSCI version selection API
2018-05-09 09:50:19 +02:00
futex: Fix inode life-time issue
2020-04-02 17:20:27 +02:00
math-emu/soft-fp.h: (_FP_ROUND_ZERO) cast 0 to void to fix warning
2019-12-21 10:41:02 +01:00
media: v4l2-device.h: Explicitly compare grp{id,mask} to zero in v4l2_device macros
2020-02-28 15:42:24 +01:00
fib: add missing attribute validation for tun_id
2020-03-20 09:07:39 +01:00
IB/mlx4: Avoid implicit enumerated type conversion
2019-11-25 09:53:28 +01:00
scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session"
2020-02-28 15:42:54 +01:00
memory: tegra: Apply interrupts mask per SoC
2018-08-03 07:55:24 +02:00
ALSA: rawmidi: Avoid bit fields for state flags
2020-02-28 15:42:55 +01:00
target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK
2018-01-17 09:38:54 +01:00
tracing: xen: Ordered comparison of function pointers
2020-01-29 10:24:39 +01:00
net: ethtool: Add back transceiver type
2020-01-29 10:24:36 +01:00
udlfb: set optimal write delay
2018-09-09 20:01:25 +02:00
swiotlb-xen: implement xen_swiotlb_dma_mmap callback
2017-10-05 09:44:05 +02:00
fb099f3bb4