Messages in this thread Patch in this message | | | Date | Tue, 15 Feb 2011 16:12:07 -0800 | From | Greg KH <> | Subject | [070/272] [SCSI] libsas: fix runaway error handler problem |
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2.6.37-stable review patch. If anyone has any objections, please let us know.
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From: James Bottomley <James.Bottomley@suse.de>
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 <James.Bottomley@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- 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 @@ -647,6 +647,7 @@ 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__);
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