https://github.com/torvalds/linux
Revision 57053d8c5c59562cac156513740c10b502a40968 authored by Matias Bjorling on 10 December 2013, 15:50:38 UTC, committed by Linus Torvalds on 15 December 2013, 20:17:16 UTC
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>
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Tip revision: 57053d8c5c59562cac156513740c10b502a40968 authored by Matias Bjorling on 10 December 2013, 15:50:38 UTC
null_blk: mem garbage on NUMA systems during init
null_blk: mem garbage on NUMA systems during init
Tip revision: 57053d8
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .gitignore | -rw-r--r-- | 1.1 KB |
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| CREDITS | -rw-r--r-- | 93.3 KB |
| Kbuild | -rw-r--r-- | 2.5 KB |
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| MAINTAINERS | -rw-r--r-- | 261.7 KB |
| Makefile | -rw-r--r-- | 48.2 KB |
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