Peter Zijlstra c9bd1568d5 futex: Fix hardcoded flags ...

Xi reported that commit 5694289ce1 ("futex: Flag conversion") broke
glibc's robust futex tests.

This was narrowed down to the change of FLAGS_SHARED from 0x01 to
0x10, at which point Florian noted that handle_futex_death() has a
hardcoded flags argument of 1.

Change this to: FLAGS_SIZE_32 | FLAGS_SHARED, matching how
futex_to_flags() unconditionally sets FLAGS_SIZE_32 for all legacy
futex ops.

Reported-by: Xi Ruoyao <[email protected]>
Reported-by: Florian Weimer <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 5694289ce1 ("futex: Flag conversion")
Cc: <[email protected]>

2023-11-15 04:02:25 +01:00

..

core.c

futex: Fix hardcoded flags

2023-11-15 04:02:25 +01:00

futex.h

futex: make the vectored futex operations available

2023-09-29 02:37:07 -06:00

Makefile

futex: Split out wait/wake

2021-10-07 13:51:11 +02:00

pi.c

futex: Propagate flags into get_futex_key()

2023-09-21 19:22:09 +02:00

requeue.c

Merge tag 'io_uring-futex-2023-10-30' of git://git.kernel.dk/linux

2023-11-01 11:25:08 -10:00

syscalls.c

futex: make futex_parse_waitv() available as a helper

2023-09-29 02:37:05 -06:00

waitwake.c

futex: make the vectored futex operations available

2023-09-29 02:37:07 -06:00