scsi: qedi: Initialize the stats mutex lock
authorNilesh Javali <nilesh.javali@cavium.com>
Thu, 27 Sep 2018 12:15:35 +0000 (05:15 -0700)
committerMartin K. Petersen <martin.petersen@oracle.com>
Fri, 28 Sep 2018 06:28:05 +0000 (02:28 -0400)
commit3cc5746e5ad7688e274e193fa71278d98aa52759
tree1bce3b1d8a07d8253908d3ca0b0750fda5e347ef
parentf1f1fadacaf08b7cf11714c0c29f8fa4d4ef68a9
scsi: qedi: Initialize the stats mutex lock

Fix kernel NULL pointer dereference,

Call Trace:
  [<ffffffff9b7658e6>] __mutex_lock_slowpath+0xa6/0x1d0
  [<ffffffff9b764cef>] mutex_lock+0x1f/0x2f
  [<ffffffffc061b5e1>] qedi_get_protocol_tlv_data+0x61/0x450 [qedi]
  [<ffffffff9b1f9d8e>] ? map_vm_area+0x2e/0x40
  [<ffffffff9b1fc370>] ? __vmalloc_node_range+0x170/0x280
  [<ffffffffc0b81c3d>] ? qed_mfw_process_tlv_req+0x27d/0xbd0 [qed]
  [<ffffffffc0b6461b>] qed_mfw_fill_tlv_data+0x4b/0xb0 [qed]
  [<ffffffffc0b81c59>] qed_mfw_process_tlv_req+0x299/0xbd0 [qed]
  [<ffffffff9b02a59e>] ? __switch_to+0xce/0x580
  [<ffffffffc0b61e5b>] qed_slowpath_task+0x5b/0x80 [qed]

Signed-off-by: Nilesh Javali <nilesh.javali@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/qedi/qedi_main.c