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| author | David Howells <dhowells@redhat.com> | 2026-06-25 15:06:24 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-07-01 15:26:28 +0200 |
| commit | 70531f4f3a143f81baf549da7f59a24a9f87a65c (patch) | |
| tree | a9196364cfa8d1d54546e409ba61866f5c8ecca6 /lib | |
| parent | 55f4bb9373ca4a521f3b0119366db92715a39b81 (diff) | |
| download | linux-70531f4f3a143f81baf549da7f59a24a9f87a65c.tar.gz linux-70531f4f3a143f81baf549da7f59a24a9f87a65c.zip | |
iov_iter: Fix missing alloc fail check in iov_iter_extract_bvec_pages()
Fix iov_iter_extract_bvec_pages() to check if want_pages_array() fails and,
if so, return -ENOMEM appropriately.
Fixes: e4e535bff2bc ("iov_iter: don't require contiguous pages in iov_iter_extract_bvec_pages")
Link: https://sashiko.dev/#/patchset/20260608145432.681865-1-dhowells%40redhat.com
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://patch.msgid.link/20260625140640.3116900-7-dhowells@redhat.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
cc: Ming Lei <ming.lei@redhat.com>
cc: Paulo Alcantara <pc@manguebit.org>
cc: Matthew Wilcox <willy@infradead.org>
cc: Christoph Hellwig <hch@infradead.org>
cc: Jens Axboe <axboe@kernel.dk>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/iov_iter.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 0f320b4e82a8..3dfad70328eb 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1637,6 +1637,8 @@ static ssize_t iov_iter_extract_bvec_pages(struct iov_iter *i, bi.bi_bvec_done = skip; maxpages = want_pages_array(pages, maxsize, skip, maxpages); + if (!maxpages) + return -ENOMEM; while (bi.bi_size && bi.bi_idx < i->nr_segs) { struct bio_vec bv = bvec_iter_bvec(i->bvec, bi); |