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Date:	Fri, 18 Jul 2014 14:11:07 +0200
From:	Jiri Slaby <>
	Ulrich Obergfell <>,
	Paolo Bonzini <>,
	Christoph Hellwig <>, Jiri Slaby <>
Subject: [PATCH 3.12 062/170] scsi_error: fix invalid setting of host byte

From: Ulrich Obergfell <>

3.12-stable review patch.  If anyone has any objections, please let me know.


commit 8922a908908ff947f1f211e07e2e97f1169ad3cb upstream.

After scsi_try_to_abort_cmd returns, the eh_abort_handler may have
already found that the command has completed in the device, causing
the host_byte to be nonzero (e.g. it could be DID_ABORT).  When
this happens, ORing DID_TIME_OUT into the host byte will corrupt
the result field and initiate an unwanted command retry.

Fix this by using set_host_byte instead, following the model of
commit 2082ebc45af9c9c648383b8cde0dc1948eadbf31.

Signed-off-by: Ulrich Obergfell <>
[Fix all instances according to review comments. - Paolo]
Signed-off-by: Paolo Bonzini <>
Signed-off-by: Christoph Hellwig <>
Reviewed-by: Ewan D. Milne <>
Reviewed-by: Hannes Reinecke <>
Signed-off-by: Jiri Slaby <>
 drivers/scsi/scsi_error.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 83e591b60193..9ba3642cb19e 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -143,7 +143,7 @@ enum blk_eh_timer_return scsi_times_out(struct request *req)
 	else if (host->hostt->eh_timed_out)
 		rtn = host->hostt->eh_timed_out(scmd);
-	scmd->result |= DID_TIME_OUT << 16;
+	set_host_byte(scmd, DID_TIME_OUT);
 	if (unlikely(rtn == BLK_EH_NOT_HANDLED &&
 		     !scsi_eh_scmd_add(scmd, SCSI_EH_CANCEL_CMD)))

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