futex: Set task::futex_state to DEAD right after handling futex exit
authorThomas Gleixner <tglx@linutronix.de>
Wed, 6 Nov 2019 21:55:40 +0000 (22:55 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Nov 2019 09:10:10 +0000 (10:10 +0100)
commit350a30ce849da8736601ba28ae3d5f3f10804343
tree5e4d9dfa349aca34c80bd4a4b6e856b396ee3a1b
parent1bcee233700efc9a038b30bea25cc04163da4020
futex: Set task::futex_state to DEAD right after handling futex exit

commit f24f22435dcc11389acc87e5586239c1819d217c upstream.

Setting task::futex_state in do_exit() is rather arbitrarily placed for no
reason. Move it into the futex code.

Note, this is only done for the exit cleanup as the exec cleanup cannot set
the state to FUTEX_STATE_DEAD because the task struct is still in active
use.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20191106224556.439511191@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kernel/exit.c
kernel/futex.c