diff options
| author | Ming Lei <[email protected]> | 2016-11-16 18:07:05 +0800 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2016-11-16 08:09:51 -0700 |
| commit | 0a6219a95f0b0690fb7094acb26002e7a4791197 (patch) | |
| tree | f965302c4a95854447b360d0d6c41dabfc28171e /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | 2868f13c303e1472bfd3941c62916c1f4128a713 (diff) | |
block: deal with stale req count of plug list
In both legacy and mq path, req count of plug list is computed
before allocating request, so the number can be stale when falling
back to slept allocation, also the new introduced wbt can sleep
too.
This patch deals with the case by checking if plug list becomes
empty, and fixes the KASAN report of 'BUG: KASAN: stack-out-of-bounds'
which is introduced by Shaohua's patches of dispatching big request.
Fixes: 600271d900002(blk-mq: immediately dispatch big size request)
Fixes: 50d24c34403c6(block: immediately dispatch big size request)
Cc: Shaohua Li <[email protected]>
Signed-off-by: Ming Lei <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions