This is a note to let you know that I've just added the patch titled
scsi: libsas: fix error when getting phy events
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-libsas-fix-error-when-getting-phy-events.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Apr 9 17:09:24 CEST 2018
From: Jason Yan <yanaijie@xxxxxxxxxx>
Date: Thu, 4 Jan 2018 21:04:32 +0800
Subject: scsi: libsas: fix error when getting phy events
From: Jason Yan <yanaijie@xxxxxxxxxx>
[ Upstream commit 2b23d9509fd7174b362482cf5f3b5f9a2265bc33 ]
The intend purpose here was to goto out if smp_execute_task() returned
error. Obviously something got screwed up. We will never get these link
error statistics below:
~:/sys/class/sas_phy/phy-1:0:12 # cat invalid_dword_count
0
~:/sys/class/sas_phy/phy-1:0:12 # cat running_disparity_error_count
0
~:/sys/class/sas_phy/phy-1:0:12 # cat loss_of_dword_sync_count
0
~:/sys/class/sas_phy/phy-1:0:12 # cat phy_reset_problem_count
0
Obviously we should goto error handler if smp_execute_task() returns
non-zero.
Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver")
Signed-off-by: Jason Yan <yanaijie@xxxxxxxxxx>
CC: John Garry <john.garry@xxxxxxxxxx>
CC: chenqilin <chenqilin2@xxxxxxxxxx>
CC: chenxiang <chenxiang66@xxxxxxxxxxxxx>
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/libsas/sas_expander.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -675,7 +675,7 @@ int sas_smp_get_phy_events(struct sas_ph
res = smp_execute_task(dev, req, RPEL_REQ_SIZE,
resp, RPEL_RESP_SIZE);
- if (!res)
+ if (res)
goto out;
phy->invalid_dword_count = scsi_to_u32(&resp[12]);
Patches currently in stable-queue which might be from yanaijie@xxxxxxxxxx are
queue-4.9/scsi-libsas-initialize-sas_phy-status-according-to-response-of-discover.patch
queue-4.9/scsi-libsas-fix-error-when-getting-phy-events.patch
queue-4.9/scsi-libsas-fix-memory-leak-in-sas_smp_get_phy_events.patch