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authorJens Axboe <jaxboe@fusionio.com>2011-05-26 15:01:38 -0400
committerJens Axboe <jaxboe@fusionio.com>2011-05-26 15:01:38 -0400
commitf4fa3424c66255ba1e07b26becfc3d6cab0fdf65 (patch)
tree7c16496c0f87bc4f1236c08e264065c776baec73 /Documentation/dvb/lmedm04.txt
parent4db70f73e56961b9bcdfd0c36c62847a18b7dbb5 (diff)
block: fix oops on !disk->queue and sysfs discard alignment display
Eric Dumazet reports: ---- At boot, I have a crash in part_discard_alignment_show+0x1b/0x50 CR2 : 000006ac fault in : mov 0x2c(%rcx),%edx I suspect commit 23ceb5b7719e9276d4 (block: Remove extra discard_alignment from hd_struct) being in fault ---- Not quite known how ->queue can be NULL while the sysfs entry exists, but lets play it safe and check for a NULL queue. The rest of the sysfs show strategies in check.c do not dereference disk->queue. Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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