From: Scott James Remnant Date: Thu, 29 Nov 2007 00:22:07 +0000 (-0800) Subject: wait_task_stopped(): pass correct exit_code to wait_noreap_copyout() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e6ceb32aa25fc33f21af84cc7a32fe289b3e860c;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git wait_task_stopped(): pass correct exit_code to wait_noreap_copyout() In wait_task_stopped() exit_code already contains the right value for the si_status member of siginfo, and this is simply set in the non WNOWAIT case. If you call waitid() with a stopped or traced process, you'll get the signal in siginfo.si_status as expected -- however if you call waitid(WNOWAIT) at the same time, you'll get the signal << 8 | 0x7f Pass it unchanged to wait_noreap_copyout(); we would only need to shift it and add 0x7f if we were returning it in the user status field and that isn't used for any function that permits WNOWAIT. Signed-off-by: Scott James Remnant Signed-off-by: Oleg Nesterov Cc: Roland McGrath Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/kernel/exit.c b/kernel/exit.c index 0a4a382ecf23..549c0558ba68 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1388,7 +1388,7 @@ static int wait_task_stopped(struct task_struct *p, int delayed_group_leader, if (unlikely(!exit_code) || unlikely(p->exit_state)) goto bail_ref; return wait_noreap_copyout(p, pid, uid, - why, (exit_code << 8) | 0x7f, + why, exit_code, infop, ru); }