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authorVarun Prakash <varun@chelsio.com>2017-07-23 20:01:32 +0530
committerMartin K. Petersen <martin.petersen@oracle.com>2017-07-24 22:16:16 -0400
commit5029271072bf55afa6d836180ee93af09b26ab8b (patch)
tree8595fad2ebf5281937802d19d4ae5fefa8f259b3 /drivers/scsi
parent516b7db593f3a541e2e98867575c3c697f41a247 (diff)
downloadlinux-5029271072bf55afa6d836180ee93af09b26ab8b.tar.bz2
scsi: libcxgbi: add check for valid cxgbi_task_data
In error case it is possible that ->cleanup_task() gets called without calling ->alloc_pdu() in this case cxgbi_task_data is not valid, so add a check for for valid cxgbi_task_data in cxgbi_cleanup_task(). Signed-off-by: Varun Prakash <varun@chelsio.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/cxgbi/libcxgbi.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index e4c83b7c96a8..1a4cfa562a60 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -2128,6 +2128,13 @@ void cxgbi_cleanup_task(struct iscsi_task *task)
struct iscsi_tcp_task *tcp_task = task->dd_data;
struct cxgbi_task_data *tdata = iscsi_task_cxgbi_data(task);
+ if (!tcp_task || !tdata || (tcp_task->dd_data != tdata)) {
+ pr_info("task 0x%p,0x%p, tcp_task 0x%p, tdata 0x%p/0x%p.\n",
+ task, task->sc, tcp_task,
+ tcp_task ? tcp_task->dd_data : NULL, tdata);
+ return;
+ }
+
log_debug(1 << CXGBI_DBG_ISCSI,
"task 0x%p, skb 0x%p, itt 0x%x.\n",
task, tdata->skb, task->hdr_itt);