https://github.com/torvalds/linux
Revision d6c73964f1e2a07f75057fb32ae46f6599036f93 authored by Anatoliy Glagolev on 13 June 2018, 21:38:51 UTC, committed by Jens Axboe on 15 June 2018, 14:15:37 UTC
The existing implementation allows races between bsg_unregister and bsg_open paths. bsg_unregister and request_queue cleanup and deletion may start and complete right after bsg_get_device (in bsg_open path) retrieves bsg_class_device and releases the mutex. Then bsg_open path touches freed memory of bsg_class_device and request_queue. One possible fix is to hold the mutex all the way through bsg_get_device instead of releasing it after bsg_class_device retrieval. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-Off-By: Anatoliy Glagolev <glagolig@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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History 
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Tip revision: d6c73964f1e2a07f75057fb32ae46f6599036f93 authored by Anatoliy Glagolev on 13 June 2018, 21:38:51 UTC
bsg: fix race of bsg_open and bsg_unregister
bsg: fix race of bsg_open and bsg_unregister
Tip revision: d6c7396
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | -rw-r--r-- | 12.8 KB |
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.5 KB |
| .mailmap | -rw-r--r-- | 9.3 KB |
| COPYING | -rw-r--r-- | 423 bytes |
| CREDITS | -rw-r--r-- | 96.3 KB |
| Kbuild | -rw-r--r-- | 2.2 KB |
| Kconfig | -rw-r--r-- | 321 bytes |
| MAINTAINERS | -rw-r--r-- | 447.9 KB |
| Makefile | -rw-r--r-- | 61.1 KB |
| README | -rw-r--r-- | 800 bytes |
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