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commit 5a0ec388ef0f6e33841aeb810d7fa23f049ec4cd upstream. Commit523e1d399c("block: make gendisk hold a reference to its queue") modified add_disk() and disk_release() but did not update any of the error paths that trigger a put_disk() call after disk->queue has been assigned. That introduced the following behavior in the pktcdvd driver if pkt_new_dev() fails: Kernel BUG at 00000000e98fd882 [verbose debug info unavailable] Since disk_release() calls blk_put_queue() anyway if disk->queue != NULL, fix this by removing the blk_cleanup_queue() call from the pkt_setup_dev() error path. Fixes: commit523e1d399c("block: make gendisk hold a reference to its queue") Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Tejun Heo <tj@kernel.org> Cc: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>