diff options
| author | Stefan Bühler <source@stbuehler.de> | 2019-04-19 11:57:44 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-04-22 11:00:55 -0600 |
| commit | e523a29c4f2703bdb98f68ce1bb256e259fd8d5f (patch) | |
| tree | 0ba64403279546f48c7a7839c935ddbc110fa7df /drivers | |
| parent | 35fa71a030caa50458a043560d4814ea9bcd639f (diff) | |
io_uring: fix race condition reading SQ entries
A read memory barrier is required between reading SQ tail and reading
the actual data belonging to the SQ entry.
Userspace needs a matching write barrier between writing SQ entries and
updating SQ tail (using smp_store_release to update tail will do).
Signed-off-by: Stefan Bühler <source@stbuehler.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions