scsi: scsi_dh_alua: Fix a reference counting bug
The code at the end of alua_rtpg_work() is as follows: scsi_device_put(sdev); kref_put(&pg->kref, release_port_group); In other words, alua_rtpg_queue() must hold an sdev reference and a pg reference before queueing rtpg work. If no rtpg work is queued no additional references should be held when alua_rtpg_queue() returns. If no rtpg work is queued, ensure that alua_rtpg_queue() only gives up the sdev reference if that reference was obtained by the same alua_rtpg_queue() call. Signed-off-by: NBart Van Assche <bart.vanassche@sandisk.com> Reported-by: NTang Junhui <tang.junhui@zte.com.cn> Cc: Hannes Reinecke <hare@suse.com> Cc: Tang Junhui <tang.junhui@zte.com.cn> Cc: <stable@vger.kernel.org> Reviewed-by: NHannes Reinecke <hare@suse.com> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Showing
想要评论请 注册 或 登录