diff options
author | Zhao Hongjiang <zhaohongjiang@huawei.com> | 2013-04-25 23:03:53 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-26 10:56:18 -0400 |
commit | 91d80a84bbc8f28375cca7e65ec666577b4209ad (patch) | |
tree | 9b3ace831ebff07b31384e8046f88f1c0399bd6c /fs/aio.c | |
parent | 697dfd884438058b15032b0169887c742704434a (diff) |
aio: fix possible invalid memory access when DEBUG is enabled
dprintk() shouldn't access @ring after it's unmapped.
Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/aio.c')
-rw-r--r-- | fs/aio.c | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -1029,9 +1029,9 @@ static int aio_read_evt(struct kioctx *ioctx, struct io_event *ent) | |||
1029 | spin_unlock(&info->ring_lock); | 1029 | spin_unlock(&info->ring_lock); |
1030 | 1030 | ||
1031 | out: | 1031 | out: |
1032 | kunmap_atomic(ring); | ||
1033 | dprintk("leaving aio_read_evt: %d h%lu t%lu\n", ret, | 1032 | dprintk("leaving aio_read_evt: %d h%lu t%lu\n", ret, |
1034 | (unsigned long)ring->head, (unsigned long)ring->tail); | 1033 | (unsigned long)ring->head, (unsigned long)ring->tail); |
1034 | kunmap_atomic(ring); | ||
1035 | return ret; | 1035 | return ret; |
1036 | } | 1036 | } |
1037 | 1037 | ||