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| author |   David Howells <dhowells@redhat.com> | 2023-09-08 17:03:20 +0100 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2023-09-09 15:11:49 -0700 |
| commit | f741bd7178c95abd7aeac5a9d933ee542f9a5509 (patch) | |
| tree | 2daa2aee81598fcf690d39ac2424ef90173c00b9 /scripts/generate_rust_analyzer.py | |
| parent | Merge tag 'sh-for-v6.6-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux (diff) | |
| download | linux-rng-f741bd7178c95abd7aeac5a9d933ee542f9a5509.tar.xz linux-rng-f741bd7178c95abd7aeac5a9d933ee542f9a5509.zip | |
iov_iter: Fix iov_iter_extract_pages() with zero-sized entries
iov_iter_extract_pages() doesn't correctly handle skipping over initial
zero-length entries in ITER_KVEC and ITER_BVEC-type iterators.
The problem is that it accidentally reduces maxsize to 0 when it
skipping and thus runs to the end of the array and returns 0.
Fix this by sticking the calculated size-to-copy in a new variable
rather than back in maxsize.
Fixes: 7d58fe731028 ("iov_iter: Add a function to extract a page list from an iterator")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: David Hildenbrand <david@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/generate_rust_analyzer.py')
0 files changed, 0 insertions, 0 deletions