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| author | Jens Axboe <axboe@kernel.dk> | 2021-01-23 15:51:11 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-01-24 18:13:56 -0700 |
| commit | 84965ff8a84f0368b154c9b367b62e59c1193f30 (patch) | |
| tree | 4bad45289f957d8a7fd2feb281adad8cde6c0538 /fs/io_uring.c | |
| parent | 6ee1d745b7c9fd573fba142a2efdad76a9f1cb04 (diff) | |
| download | lwn-84965ff8a84f0368b154c9b367b62e59c1193f30.tar.gz lwn-84965ff8a84f0368b154c9b367b62e59c1193f30.zip | |
io_uring: if we see flush on exit, cancel related tasks
Ensure we match tasks that belong to a dead or dying task as well, as we
need to reap those in addition to those belonging to the exiting task.
Cc: stable@vger.kernel.org # 5.9+
Reported-by: Josef Grieb <josef.grieb@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index c07913ec0cca..695fe00bafdc 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1069,8 +1069,12 @@ static bool io_match_task(struct io_kiocb *head, { struct io_kiocb *req; - if (task && head->task != task) + if (task && head->task != task) { + /* in terms of cancelation, always match if req task is dead */ + if (head->task->flags & PF_EXITING) + return true; return false; + } if (!files) return true; @@ -9136,6 +9140,9 @@ static int io_uring_flush(struct file *file, void *data) struct io_uring_task *tctx = current->io_uring; struct io_ring_ctx *ctx = file->private_data; + if (fatal_signal_pending(current) || (current->flags & PF_EXITING)) + io_uring_cancel_task_requests(ctx, NULL); + if (!tctx) return 0; |