lkml.org 
[lkml]   [2002]   [Aug]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: 2.5.31 qlogic error "this should not happen"
On Thu, Aug 22, 2002 at 06:39:16PM -0400, rwhron@earthlink.net wrote:
> While running bonnie++ with 2.5.31 and 2.5.31-mm1,
> a quad xeon with QLogic Corp. QLA2200 (rev 05)
> stopped responding. These were the last lines
> in /var/log/messages before the box was rebooted.
>
> kernel: qlogicfc0 : no handle slots, this should not happen.
> kernel: hostdata->queued is 6, in_ptr: 7d

Hmmm...sounds like no one bothered to correct the lock usage in this
driver after the 2.5 kernel switched to per device queue locks instead of
the global io_request_lock usage that this driver depended on to be safe.
Try applying the attached patch and see if it helps you out any.

--
Doug Ledford <dledford@redhat.com> 919-754-3700 x44233
Red Hat, Inc.
1801 Varsity Dr.
Raleigh, NC 27606

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.19pre8/drivers/scsi/qlogicfc.c linux.19pre8-ac5/drivers/scsi/qlogicfc.c
--- linux.19pre8/drivers/scsi/qlogicfc.c Thu May 9 22:40:23 2002
+++ linux.19pre8-ac5/drivers/scsi/qlogicfc.c Thu May 9 22:40:52 2002
@@ -1343,18 +1343,11 @@

num_free = QLOGICFC_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr);
num_free = (num_free > 2) ? num_free - 2 : 0;
- host->can_queue = hostdata->queued + num_free;
+ host->can_queue = host->host_busy + num_free;
if (host->can_queue > QLOGICFC_REQ_QUEUE_LEN)
host->can_queue = QLOGICFC_REQ_QUEUE_LEN;
host->sg_tablesize = QLOGICFC_MAX_SG(num_free);

- /* this is really gross */
- if (host->can_queue <= host->host_busy){
- if (host->can_queue+2 < host->host_busy)
- DEBUG(printk("qlogicfc%d.c crosses its fingers.\n", hostdata->host_id));
- host->can_queue = host->host_busy + 1;
- }
-
LEAVE("isp2x00_queuecommand");

return 0;
@@ -1623,17 +1616,11 @@

num_free = QLOGICFC_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr);
num_free = (num_free > 2) ? num_free - 2 : 0;
- host->can_queue = hostdata->queued + num_free;
+ host->can_queue = host->host_busy + num_free;
if (host->can_queue > QLOGICFC_REQ_QUEUE_LEN)
host->can_queue = QLOGICFC_REQ_QUEUE_LEN;
host->sg_tablesize = QLOGICFC_MAX_SG(num_free);

- if (host->can_queue <= host->host_busy){
- if (host->can_queue+2 < host->host_busy)
- DEBUG(printk("qlogicfc%d : crosses its fingers.\n", hostdata->host_id));
- host->can_queue = host->host_busy + 1;
- }
-
outw(HCCR_CLEAR_RISC_INTR, host->io_port + HOST_HCCR);
LEAVE_INTR("isp2x00_intr_handler");
}
\
 
 \ /
  Last update: 2005-03-22 13:28    [W:0.051 / U:0.908 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site