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iscsi-target: Avoid rejecting incorrect ITT for Data-Out

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commit 97c99b47ac 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>
This commit is contained in:
Nicholas Bellinger
2014-06-20 10:59:57 -07:00
committed by Greg Kroah-Hartman
parent 69256ce37f
commit 2152a122cd
1 changed files with 1 additions and 1 deletions
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2
drivers/target/iscsi/iscsi_target.c
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@@ -1313,7 +1313,7 @@ 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);