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[iscsi] Report SCSI response only when applicable

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iSCSI generally includes a full SCSI response only when an error
occurs.  iscsi_scsi_done() currently passes the NULL response through
to scsi_response(), which ends up causing scsicmd_response() to
dereference a NULL pointer.

Fix by calling scsi_response() only if we have a non-NULL response.

Reported-by: Brendon Walsh <brendonwalsh@niamu.com>
Tested-by: Brendon Walsh <brendonwalsh@niamu.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2012-05-16 10:50:56 +01:00
parent a33298dcda
commit 73b21174b2
1 changed files with 2 additions and 1 deletions
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3
src/net/tcp/iscsi.c
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@ -337,7 +337,8 @@ static void iscsi_scsi_done ( struct iscsi_session *iscsi, int rc,
iscsi->command = NULL;
/* Send SCSI response, if any */
scsi_response ( &iscsi->data, rsp );
if ( rsp )
scsi_response ( &iscsi->data, rsp );
/* Close SCSI command, if this is still the same command. (It
* is possible that the command interface has already been