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io_uring: fix io_drain_req() 

io_drain_req() return whether the request has been consumed or not, not
an error code. Fix a stupid mistake slipped from optimisation patches.

Reported-by: syzbot+ba6fcd859210f4e9e109@syzkaller.appspotmail.com
Fixes: 76cc33d791 ("io_uring: refactor io_req_defer()")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/4d3c53c4274ffff307c8ae062fc7fda63b978df2.1626039606.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2021-07-11 22:41:13 +01:00 committed by Jens Axboe
parent 9c6882608b
commit 1b48773f9f
1 changed files with 4 additions and 2 deletions
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6
fs/io_uring.c
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@ -6019,11 +6019,13 @@ static bool io_drain_req(struct io_kiocb *req)
ret = io_req_prep_async(req); ret = io_req_prep_async(req);
if (ret) if (ret)
return ret; goto fail;
io_prep_async_link(req); io_prep_async_link(req);
de = kmalloc(sizeof(*de), GFP_KERNEL); de = kmalloc(sizeof(*de), GFP_KERNEL);
if (!de) { if (!de) {
io_req_complete_failed(req, -ENOMEM); ret = -ENOMEM;
fail:
io_req_complete_failed(req, ret);
return true; return true;
} }