This is a note to let you know that I've just added the patch titled
[SCSI] libsas: fix runaway error handler problem
to the 2.6.32-longterm tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/longterm/longterm-queue-2.6.32.git;a=summary
The filename of the patch is:
libsas-fix-runaway-error-handler-problem.patch
and it can be found in the queue-2.6.32 subdirectory.
If you, or anyone else, feels it should not be added to the 2.6.32 longterm
tree,
please let <[email protected]> know about it.
>From 9ee91f7fb550a4c82f82d9818e42493484c754af Mon Sep 17 00:00:00 2001
From: James Bottomley <[email protected]>
Date: Thu, 20 Jan 2011 17:26:44 -0600
Subject: [SCSI] libsas: fix runaway error handler problem
From: James Bottomley <[email protected]>
commit 9ee91f7fb550a4c82f82d9818e42493484c754af upstream.
libsas makes use of scsi_schedule_eh() but forgets to clear the
host_eh_scheduled flag in its error handling routine. Because of this,
the error handler thread never gets to sleep; it's constantly awake and
trying to run the error routine leading to console spew and inability to
run anything else (at least on a UP system). The fix is to clear the
flag as we splice the work queue.
Signed-off-by: James Bottomley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/scsi/libsas/sas_scsi_host.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -648,6 +648,7 @@ void sas_scsi_recover_host(struct Scsi_H
spin_lock_irqsave(shost->host_lock, flags);
list_splice_init(&shost->eh_cmd_q, &eh_work_q);
+ shost->host_eh_scheduled = 0;
spin_unlock_irqrestore(shost->host_lock, flags);
SAS_DPRINTK("Enter %s\n", __func__);
Patches currently in longterm-queue-2.6.32 which might be from
[email protected] are
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