From: Thomas Gleixner tglx@linutronix.de
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 | 1 - kernel/futex.c | 1 + 2 files changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/exit.c +++ b/kernel/exit.c @@ -837,7 +837,6 @@ void __noreturn do_exit(long code) * Make sure we are holding no locks: */ debug_check_no_locks_held(); - futex_exit_done(tsk);
if (tsk->io_context) exit_io_context(tsk); --- a/kernel/futex.c +++ b/kernel/futex.c @@ -3682,6 +3682,7 @@ void futex_exec_release(struct task_stru void futex_exit_release(struct task_struct *tsk) { futex_exec_release(tsk); + futex_exit_done(tsk); }
long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,