From 60d26b96c53f289e82d7de6f53418e4d72787f5b Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Wed, 25 Apr 2012 11:03:05 +1000 Subject: [PATCH] mm: set task exit code before complete_vfork_done() kthread_stop() uses task->vfork_done for synchronization. The exiting kthread shouldn't do complete_vfork_done() until it sets ->exit_code. fix for mm-correctly-synchronize-rss-counters-at-exit-exec.patch Signed-off-by: Konstantin Khlebnikov Cc: Oleg Nesterov Cc: Hugh Dickins Cc: KAMEZAWA Hiroyuki Cc: Konstantin Khlebnikov Cc: Markus Trippelsdorf Signed-off-by: Andrew Morton --- kernel/exit.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/exit.c b/kernel/exit.c index eb127194f19e..70875a6de846 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -960,6 +960,9 @@ void do_exit(long code) acct_update_integrals(tsk); + /* Set exit_code before complete_vfork_done() in mm_release() */ + tsk->exit_code = code; + /* Release mm and sync mm's RSS info before statistics gathering */ mm_release(tsk, tsk->mm); @@ -975,7 +978,6 @@ void do_exit(long code) tty_audit_exit(); audit_free(tsk); - tsk->exit_code = code; taskstats_exit(tsk, group_dead); exit_mm(tsk); -- 2.39.5