Commit 6efcae46 authored by Roland McGrath's avatar Roland McGrath Committed by Linus Torvalds

Fix waitid si_code regression

In commit ee7c82da ("wait_task_stopped:
simplify and fix races with SIGCONT/SIGKILL/untrace"), the magic (short)
cast when storing si_code was lost in wait_task_stopped.  This leaks the
in-kernel CLD_* values that do not match what userland expects.
Signed-off-by: default avatarRoland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 84c6f604
...@@ -1378,7 +1378,7 @@ static int wait_task_stopped(struct task_struct *p, ...@@ -1378,7 +1378,7 @@ static int wait_task_stopped(struct task_struct *p,
if (!retval && infop) if (!retval && infop)
retval = put_user(0, &infop->si_errno); retval = put_user(0, &infop->si_errno);
if (!retval && infop) if (!retval && infop)
retval = put_user(why, &infop->si_code); retval = put_user((short)why, &infop->si_code);
if (!retval && infop) if (!retval && infop)
retval = put_user(exit_code, &infop->si_status); retval = put_user(exit_code, &infop->si_status);
if (!retval && infop) if (!retval && infop)
......
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