diff options
| author | Jens Axboe <[email protected]> | 2021-02-24 02:59:06 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2021-02-24 03:33:41 +0000 |
| commit | eb2de9418d56b5e6ebf27bad51dbce3e22ee109b (patch) | |
| tree | ca26faeedb21d7d419bbd5e4c809dd82516ca4da /scripts/gcc-plugins/structleak_plugin.c | |
| parent | io-wq: fix races around manager/worker creation and task exit (diff) | |
| download | kernel-eb2de9418d56b5e6ebf27bad51dbce3e22ee109b.tar.gz kernel-eb2de9418d56b5e6ebf27bad51dbce3e22ee109b.zip | |
io-wq: fix race around io_worker grabbing
There's a small window between lookup dropping the reference to the
worker and calling wake_up_process() on the worker task, where the worker
itself could have exited. We ensure that the worker struct itself is
valid, but worker->task may very well be gone by the time we issue the
wakeup.
Fix the race by using a completion triggered by the reference going to
zero, and having exit wait for that completion before proceeding.
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'scripts/gcc-plugins/structleak_plugin.c')
0 files changed, 0 insertions, 0 deletions