| commit | f47c98ae14f369c03c71aaac4bd05f0b098a4632 | |
| author | James Bottomley <James.Bottomley@suse.de> | |
| Wed, 18 May 2011 14:20:10 +0000 (18 16:20 +0200) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Fri, 3 Jun 2011 01:33:46 +0000 (3 10:33 +0900) | ||
| tree | 8fd28dfdedc4eab9e0a101622baedda74f54d0d2 | treesnapshot (tar.gz zip) |
| parent | 5d8ddba27676c7f753b01ac75f90ea90be0ffcea | commitdiff |
block: add proper state guards to __elv_next_request
commit 0a58e077eb600d1efd7e54ad9926a75a39d7f8ae upstream.
blk_cleanup_queue() calls elevator_exit() and after this, we can't
touch the elevator without oopsing. __elv_next_request() must check
for this state because in the refcounted queue model, we can still
call it after blk_cleanup_queue() has been called.
This was reported as causing an oops attributable to scsi.
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit 0a58e077eb600d1efd7e54ad9926a75a39d7f8ae upstream.
blk_cleanup_queue() calls elevator_exit() and after this, we can't
touch the elevator without oopsing. __elv_next_request() must check
for this state because in the refcounted queue model, we can still
call it after blk_cleanup_queue() has been called.
This was reported as causing an oops attributable to scsi.
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| block/blk.h | diffblobblamehistory |