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Diffstat (limited to 'kernel/sys.c')
-rw-r--r--kernel/sys.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/sys.c b/kernel/sys.c
index a0c1a29a507f..1ac2d1c5d84e 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1484,7 +1484,6 @@ asmlinkage long sys_setsid(void)
pid_t session;
int err = -EPERM;
- mutex_lock(&tty_mutex);
write_lock_irq(&tasklist_lock);
/* Fail if I am already a session leader */
@@ -1504,12 +1503,15 @@ asmlinkage long sys_setsid(void)
group_leader->signal->leader = 1;
__set_special_pids(session, session);
+
+ spin_lock(&group_leader->sighand->siglock);
group_leader->signal->tty = NULL;
group_leader->signal->tty_old_pgrp = 0;
+ spin_unlock(&group_leader->sighand->siglock);
+
err = process_group(group_leader);
out:
write_unlock_irq(&tasklist_lock);
- mutex_unlock(&tty_mutex);
return err;
}