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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-09 09:01:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-09 09:01:21 -0700
commit339fbf6796f8e74544091adbf511286768eaf93e (patch)
tree12840783d0eb70d1a7ecd13c3a7fab5b69b0a2b6 /lib
parent8ee74a91ac304ad2e9e794eb96ed76f0634dec40 (diff)
parent5b47d59af68a8735e4637bacedcb4baf6f47c73f (diff)
Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fix from Al Viro: "Braino fix for iov_iter_revert() misuse" * 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fix braino in generic_file_read_iter()
Diffstat (limited to 'lib')
-rw-r--r--lib/iov_iter.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index ae82d9cea553..f835964c9485 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -790,6 +790,8 @@ void iov_iter_revert(struct iov_iter *i, size_t unroll)
{
if (!unroll)
return;
+ if (WARN_ON(unroll > MAX_RW_COUNT))
+ return;
i->count += unroll;
if (unlikely(i->type & ITER_PIPE)) {
struct pipe_inode_info *pipe = i->pipe;

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