From: " Yang Bin "<[email protected]> Before xmit,iscsi may disconnect just now. So must check connection sock NULL or not,or kernel will crash for accessing NULL pointer.
Signed-off-by: Yang Bin <[email protected]> --- drivers/scsi/iscsi_tcp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 7bedbe8..a59c49f 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -264,6 +264,9 @@ static int iscsi_sw_tcp_xmit_segment(struct iscsi_tcp_conn *tcp_conn, unsigned int copied = 0; int r = 0; + if (!sk) + return -ENOTCONN; + while (!iscsi_tcp_segment_done(tcp_conn, segment, 0, r)) { struct scatterlist *sg; unsigned int offset, copy; -- 1.8.3.1
