From: Nicholas Bellinger Date: Fri, 20 Jun 2014 17:59:57 +0000 (-0700) Subject: iscsi-target: Avoid rejecting incorrect ITT for Data-Out X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=97c99b47ac58bacb7c09e1f47d5d184434f6b06a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git iscsi-target: Avoid rejecting incorrect ITT for Data-Out This patch changes iscsit_check_dataout_hdr() to dump the incoming Data-Out payload when the received ITT is not associated with a WRITE, instead of calling iscsit_reject_cmd() for the non WRITE ITT descriptor. This addresses a bug where an initiator sending an Data-Out for an ITT associated with a READ would end up generating a reject for the READ, eventually resulting in list corruption. Reported-by: Santosh Kulkarni Reported-by: Arshad Hussain Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger --- diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 5663f4d19d02..1f4c794f5fcc 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -1309,7 +1309,7 @@ iscsit_check_dataout_hdr(struct iscsi_conn *conn, unsigned char *buf, if (cmd->data_direction != DMA_TO_DEVICE) { pr_err("Command ITT: 0x%08x received DataOUT for a" " NON-WRITE command.\n", cmd->init_task_tag); - return iscsit_reject_cmd(cmd, ISCSI_REASON_PROTOCOL_ERROR, buf); + return iscsit_dump_data_payload(conn, payload_length, 1); } se_cmd = &cmd->se_cmd; iscsit_mod_dataout_timer(cmd);