| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 567/599] io_uring: fix memory leak of uid in files registration | Date | Tue, 5 Apr 2022 09:34:21 +0200 |
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From: Pavel Begunkov <asml.silence@gmail.com>
commit c86d18f4aa93e0e66cda0e55827cd03eea6bc5f8 upstream.
When there are no files for __io_sqe_files_scm() to process in the range, it'll free everything and return. However, it forgets to put uid.
Fixes: 08a451739a9b5 ("io_uring: allow sparse fixed file sets") Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/accee442376f33ce8aaebb099d04967533efde92.1648226048.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- fs/io_uring.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -7350,6 +7350,7 @@ static int __io_sqe_files_scm(struct io_ fput(fpl->fp[i]); } else { kfree_skb(skb); + free_uid(fpl->user); kfree(fpl); }
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