| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.10 02/46] iscsi-target: Avoid rejecting incorrect ITT for Data-Out | Date | Fri, 4 Jul 2014 15:19:06 -0700 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: Nicholas Bellinger <nab@linux-iscsi.org>
commit 97c99b47ac58bacb7c09e1f47d5d184434f6b06a upstream.
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 <santosh.kulkarni@calsoftinc.com> Reported-by: Arshad Hussain <arshad.hussain@calsoftinc.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/target/iscsi/iscsi_target.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -1313,7 +1313,7 @@ iscsit_check_dataout_hdr(struct iscsi_co 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);
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