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| author | Jens Axboe <axboe@kernel.dk> | 2022-04-17 05:14:00 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-04-17 05:14:00 +0200 |
| commit | 323b190ba2debbcc03c01d2edaf1ec6b43e6ae43 (patch) | |
| tree | 4ca758039ff1ceda7c9b2aa8285c7e6eb9af6a6e /fs | |
| parent | io_uring: abort file assignment prior to assigning creds (diff) | |
| download | linux-323b190ba2debbcc03c01d2edaf1ec6b43e6ae43.tar.xz linux-323b190ba2debbcc03c01d2edaf1ec6b43e6ae43.zip | |
io_uring: free iovec if file assignment fails
We just return failure in this case, but we need to release the iovec
first. If we're doing IO with more than FAST_IOV segments, then the
iovec is allocated and must be freed.
Reported-by: syzbot+96b43810dfe9c3bb95ed@syzkaller.appspotmail.com
Fixes: 584b0180f0f4 ("io_uring: move read/write file prep state into actual opcode handler")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/io_uring.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 4479013854d2..24409dd07239 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3832,8 +3832,10 @@ static int io_read(struct io_kiocb *req, unsigned int issue_flags) iovec = NULL; } ret = io_rw_init_file(req, FMODE_READ); - if (unlikely(ret)) + if (unlikely(ret)) { + kfree(iovec); return ret; + } req->result = iov_iter_count(&s->iter); if (force_nonblock) { @@ -3958,8 +3960,10 @@ static int io_write(struct io_kiocb *req, unsigned int issue_flags) iovec = NULL; } ret = io_rw_init_file(req, FMODE_WRITE); - if (unlikely(ret)) + if (unlikely(ret)) { + kfree(iovec); return ret; + } req->result = iov_iter_count(&s->iter); if (force_nonblock) { |