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| author | Matias Bjorling <m@bjorling.me> | 2013-12-10 16:50:38 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-12-19 16:09:38 +0100 |
| commit | 0c56010c83703e1f33325838eda9a2077827b6f1 (patch) | |
| tree | 573b750f8ced88b592bc0d6ccfbaa06d5cb76304 /ipc/util.c | |
| parent | drivers: block: Mark the functions as static in skd_main.c (diff) | |
| download | linux-0c56010c83703e1f33325838eda9a2077827b6f1.tar.xz linux-0c56010c83703e1f33325838eda9a2077827b6f1.zip | |
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 'ipc/util.c')
0 files changed, 0 insertions, 0 deletions