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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-03-28 23:06:00 -0700 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-03-28 23:42:47 -0700 |
| commit | f85eda8d75d37a3796cee7f5a906e50e3f13d9e1 (patch) | |
| tree | b9b4007d74cab4f00be0c83b4008432f55406b73 /drivers/target | |
| parent | 5dade71050e799d8679698a6145e2ba46cdeac2a (diff) | |
| download | lwn-f85eda8d75d37a3796cee7f5a906e50e3f13d9e1.tar.gz lwn-f85eda8d75d37a3796cee7f5a906e50e3f13d9e1.zip | |
target: Fix RESERVATION_CONFLICT status regression for iscsi-target special case
This patch fixes a regression introduced in v3.8-rc1 code where a failed
target_check_reservation() check in target_setup_cmd_from_cdb() was causing
an incorrect SAM_STAT_GOOD status to be returned during a WRITE operation
performed by an unregistered / unreserved iscsi initiator port.
This regression is only effecting iscsi-target due to a special case check
for TCM_RESERVATION_CONFLICT within iscsi_target_erl1.c:iscsit_execute_cmd(),
and was still correctly disallowing WRITE commands from backend submission
for unregistered / unreserved initiator ports, while returning the incorrect
SAM_STAT_GOOD status due to the missing SAM_STAT_RESERVATION_CONFLICT
assignment.
This regression was first introduced with:
commit de103c93aff0bed0ae984274e5dc8b95899badab
Author: Christoph Hellwig <hch@lst.de>
Date: Tue Nov 6 12:24:09 2012 -0800
target: pass sense_reason as a return value
Go ahead and re-add the missing SAM_STAT_RESERVATION_CONFLICT assignment
during a target_check_reservation() failure, so that iscsi-target code
sends the correct SCSI status.
All other fabrics using target_submit_cmd_*() with a RESERVATION_CONFLICT
call to transport_generic_request_failure() are not effected by this bug.
Reported-by: Jeff Leung <jleung@curriegrad2004.ca>
Cc: Christoph Hellwig <hch@lst.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_transport.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 2030b608136d..3243ea790eab 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1139,8 +1139,10 @@ target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb) return ret; ret = target_check_reservation(cmd); - if (ret) + if (ret) { + cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT; return ret; + } ret = dev->transport->parse_cdb(cmd); if (ret) |