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authorJens Axboe <jens.axboe@oracle.com>2008-11-18 15:07:05 +0100
committerJens Axboe <jens.axboe@oracle.com>2008-11-18 15:08:56 +0100
commitc26156b2534c75bb3cdedf76f6ad1340971cf5bd (patch)
treeb95ed72f569c105fcc9e8f38df3d47628e689059 /REPORTING-BUGS
parent98ba4031ab2adc8b394295e68aa4c8fe9d5060db (diff)
block: hold extra reference to bio in blk_rq_map_user_iov()
If the size passed in is OK but we end up mapping too many segments, we call the unmap path directly like from IO completion. But from IO completion we have an extra reference to the bio, so this error case goes OOPS when it attempts to free and already free bio. Fix it by getting an extra reference to the bio before calling the unmap failure case. Reported-by: Petr Vandrovec <vandrove@vc.cvut.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'REPORTING-BUGS')
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