| From | Greg Kroah-Hartman <> | Subject | [ 01/42] aio: fix possible invalid memory access when DEBUG is enabled | Date | Mon, 29 Apr 2013 12:01:43 -0700 |
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3.8-stable review patch. If anyone has any objections, please let me know.
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From: Zhao Hongjiang <zhaohongjiang@huawei.com>
commit 91d80a84bbc8f28375cca7e65ec666577b4209ad upstream.
dprintk() shouldn't access @ring after it's unmapped.
Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/aio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/aio.c +++ b/fs/aio.c @@ -1027,9 +1027,9 @@ static int aio_read_evt(struct kioctx *i spin_unlock(&info->ring_lock); out: - kunmap_atomic(ring); dprintk("leaving aio_read_evt: %d h%lu t%lu\n", ret, (unsigned long)ring->head, (unsigned long)ring->tail); + kunmap_atomic(ring); return ret; }
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