GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-21 06:01:23 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

tracehook: fix exit_signal=0 case

Browse source 
My commit 2b2a1ff64a introduced a regression
(sorry about that) for the odd case of exit_signal=0 (e.g. clone_flags=0).
This is not a normal use, but it's used by a case in the glibc test suite.

Dying with exit_signal=0 sends no signal, but it's supposed to wake up a
parent's blocked wait*() calls (unlike the delayed_group_leader case).
This fixes tracehook_notify_death() and its caller to distinguish a
"signal 0" wakeup from the delayed_group_leader case (with no wakeup).

Signed-off-by: Roland McGrath <roland@redhat.com>
Tested-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Roland McGrath 2008-07-31 02:04:09 -07:00 • committed by Linus Torvalds
parent 1e24b15b26
commit 5c7edcd7ee
2 changed files with 16 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

6
kernel/exit.c
View file

@ -911,10 +911,10 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
tsk->exit_signal = SIGCHLD;
signal = tracehook_notify_death(tsk, &cookie, group_dead);
if (signal > 0)
if (signal >= 0)
signal = do_notify_parent(tsk, signal);
tsk->exit_state = signal < 0 ? EXIT_DEAD : EXIT_ZOMBIE;
tsk->exit_state = signal == DEATH_REAP ? EXIT_DEAD : EXIT_ZOMBIE;
/* mt-exec, de_thread() is waiting for us */
if (thread_group_leader(tsk) &&
@ -927,7 +927,7 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
tracehook_report_death(tsk, signal, cookie, group_dead);
/* If the process is dead, release it - nobody will wait for it */
if (signal < 0)
if (signal == DEATH_REAP)
release_task(tsk);
}