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authorAl Viro <viro@zeniv.linux.org.uk>2006-02-28 12:51:55 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2006-03-18 18:33:46 -0500
commitafc847b7ddcf636e524cf5b0de644bd3a9419a8c (patch)
tree5022a566bc55a12a792c8bd9b2d94ccfd4b10235 /kernel/exit.c
parent60a6dc55b93b3321afa52f650a149fb7e87fa85a (diff)
[PATCH] don't do exit_io_context() until we know we won't be doing any IO
testcase: mount /dev/sdb10 /mnt touch /mnt/tmp/b umount /mnt mount /dev/sdb10 /mnt rm /mnt/tmp/b </mnt/tmp/b umount /mnt and watch blkdev_ioc line in /proc/slabinfo. Vanilla kernel leaks. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/exit.c')
-rw-r--r--kernel/exit.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index 531aadca553..d1e8d500a7e 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -807,8 +807,6 @@ fastcall NORET_TYPE void do_exit(long code)
panic("Attempted to kill the idle task!");
if (unlikely(tsk->pid == 1))
panic("Attempted to kill init!");
- if (tsk->io_context)
- exit_io_context();
if (unlikely(current->ptrace & PT_TRACE_EXIT)) {
current->ptrace_message = code;
@@ -822,6 +820,8 @@ fastcall NORET_TYPE void do_exit(long code)
if (unlikely(tsk->flags & PF_EXITING)) {
printk(KERN_ALERT
"Fixing recursive fault but reboot is needed!\n");
+ if (tsk->io_context)
+ exit_io_context();
set_current_state(TASK_UNINTERRUPTIBLE);
schedule();
}
@@ -881,6 +881,9 @@ fastcall NORET_TYPE void do_exit(long code)
*/
mutex_debug_check_no_locks_held(tsk);
+ if (tsk->io_context)
+ exit_io_context();
+
/* PF_DEAD causes final put_task_struct after we schedule. */
preempt_disable();
BUG_ON(tsk->flags & PF_DEAD);