https://github.com/torvalds/linux
Revision a8c32a5c98943d370ea606a2e7dc04717eb92206 authored by Jens Axboe on 06 November 2012, 11:24:26 UTC, committed by Jens Axboe on 23 November 2012, 13:32:54 UTC
Request based dm attempts to re-run the request queue off the request completion path. If used with a driver that potentially does end_io from its request_fn, we could deadlock trying to recurse back into request dispatch. Fix this by punting the request queue run to kblockd. Tested to fix a quickly reproducible deadlock in such a scenario. Cc: stable@kernel.org Acked-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Tip revision: a8c32a5c98943d370ea606a2e7dc04717eb92206 authored by Jens Axboe on 06 November 2012, 11:24:26 UTC
dm: fix deadlock with request based dm and queue request_fn recursion
dm: fix deadlock with request based dm and queue request_fn recursion
Tip revision: a8c32a5
| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 603 bytes |
| Makefile | -rw-r--r-- | 118 bytes |
| ieee802154_dev.c | -rw-r--r-- | 6.6 KB |
| mac802154.h | -rw-r--r-- | 3.5 KB |
| mac_cmd.c | -rw-r--r-- | 2.2 KB |
| mib.c | -rw-r--r-- | 5.0 KB |
| monitor.c | -rw-r--r-- | 3.1 KB |
| rx.c | -rw-r--r-- | 3.0 KB |
| tx.c | -rw-r--r-- | 2.9 KB |
| wpan.c | -rw-r--r-- | 13.3 KB |
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