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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-07-25 10:52:04 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-25 09:48:17 -0600 |
| commit | 2e32ba5607ee2b668baa8831dd74f7cc867a1f7e (patch) | |
| tree | fb9c77142c108f93940f29d5935d81461211711c /io_uring/net.c | |
| parent | cb309ae49da7a7c28f0051deea13970291134fac (diff) | |
| download | lwn-2e32ba5607ee2b668baa8831dd74f7cc867a1f7e.tar.gz lwn-2e32ba5607ee2b668baa8831dd74f7cc867a1f7e.zip | |
io_uring/net: checks errors of zc mem accounting
mm_account_pinned_pages() may fail, don't ignore the return value.
Fixes: e29e3bd4b968 ("io_uring: account locked pages for non-fixed zc")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/dae0542ed8e6706071bb83ad3e7ad6a70d207fd9.1658742118.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/net.c')
| -rw-r--r-- | io_uring/net.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/io_uring/net.c b/io_uring/net.c index 62be89837d82..8fb8469c3315 100644 --- a/io_uring/net.c +++ b/io_uring/net.c @@ -985,7 +985,9 @@ int io_sendzc(struct io_kiocb *req, unsigned int issue_flags) &msg.msg_iter); if (unlikely(ret)) return ret; - mm_account_pinned_pages(¬if->uarg.mmp, zc->len); + ret = mm_account_pinned_pages(¬if->uarg.mmp, zc->len); + if (unlikely(ret)) + return ret; } if (zc->addr) { |