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| author | Pavel Begunkov <asml.silence@gmail.com> | 2020-06-28 12:52:38 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-06-28 08:13:03 -0600 |
| commit | f3a6fa2267480d7f19fbde8316372be46055e548 (patch) | |
| tree | 4f8eaac8f348559a00b3dda4b42a61ac159af7bc /tools/perf/scripts/python | |
| parent | io_uring: do task_work_run() during iopoll (diff) | |
| download | linux-f3a6fa2267480d7f19fbde8316372be46055e548.tar.gz linux-f3a6fa2267480d7f19fbde8316372be46055e548.zip | |
io_uring: fix iopoll -EAGAIN handling
req->iopoll() is not necessarily called by a task that submitted a
request. Because of that, it's dangerous to grab_env() and punt async on
-EGAIN, potentially grabbing another task's mm and corrupting its
memory.
Do resubmit from the submitter task context.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions