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| author | Matias Bjorling <m@bjorling.me> | 2013-12-10 16:50:38 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-15 12:17:16 -0800 |
| commit | 57053d8c5c59562cac156513740c10b502a40968 (patch) | |
| tree | 0e71310912a1004760561540bc7e665957468ee5 /Makefile | |
| parent | e4158f1b1090d362a7c998bd654cc3fe8f5c863c (diff) | |
| download | op-kernel-dev-57053d8c5c59562cac156513740c10b502a40968.zip op-kernel-dev-57053d8c5c59562cac156513740c10b502a40968.tar.gz | |
null_blk: mem garbage on NUMA systems during init
For NUMA systems, initializing the blk-mq layer and using per node hctx.
We initialize submit queues to 1, while blk-mq nr_hw_queues is
initialized to the number of NUMA nodes.
This makes the null_init_hctx function overwrite memory outside of what
it allocated. In my case it lead to writing garbage into struct
request_queue's mq_map.
Signed-off-by: Matias Bjorling <m@bjorling.me>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Makefile')
0 files changed, 0 insertions, 0 deletions
