Hi Mike,
I guess your kernel has CONFIG_DEBUG_FS disabled?
Can you try if the following patch resolves the oops?
Jan
--- ./drivers/s390/cio/qdio_debug.c.enodev
+++ ./drivers/s390/cio/qdio_debug.c
@@ -169,6 +169,8 @@ static void setup_debugfs_entry(struct q
q->nr);
debugfs_queues[i] = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR,
debugfs_root, q, &debugfs_fops);
+ if (IS_ERR(debugfs_queues[i]))
+ debugfs_queues[i] = NULL;
}
void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
On Fri, 2009-01-02 at 18:19 -0500, Mike Frysinger wrote:
> i was upgrading some vms from 2.6.16.62 to 2.6.27.10 (plus the two patchsets
> linux-2.6.27-s390-0{0,1}.tar.gz) when i noticed a regression ... on shutdown,
> the vms like to oops (s390 and s390x). anyone recognize this ? i wasnt able
> to find anything useful from google ...
>
> Oops: 0038 Ý#1¨ SMP
> Modules linked in: ipv6
> CPU: 2 Not tainted 2.6.27.10 #3
> Process reboot (pid: 29476, task: 000000001f3a91e8, ksp: 000000001ebf3d08)
> Krnl PSW : 0704100180000000 00000000002b25c4 (remove_debugfs_entry+0x18/0x40)
> R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:1 PM:0 EA:3
> Krnl GPRS: 0700000000000001 ffffffffffffffed 000000001d60d900 0000000000000020
> 00000000005ae590 000000001d60c288 00000000005ae580 000000001d608380
> 000000001ebf3c81 000000001fa5fc00 000000001d608000 0000000000000001
> 000000001d608000 00000000003bc3e8 00000000002b2698 000000001ebf3b78
> Krnl Code: 00000000002b25b6: e31040000004 lg %r1,0(%r4)
> 00000000002b25bc: b9020011 ltgr %r1,%r1
> 00000000002b25c0: a784000a brc 8,2b25d4
> >00000000002b25c4: e31010100004 lg %r1,16(%r1)
> 00000000002b25ca: e32012180020 cg %r2,536(%r1)
> 00000000002b25d0: a7840007 brc 8,2b25de
> 00000000002b25d4: 41404008 la %r4,8(%r4)
> 00000000002b25d8: a737ffef brctg %r3,2b25b6
> Call Trace:
> (Ý<0000000000000160>¨ 0x160)
> Ý<00000000002aff8e>¨ qdio_shutdown+0x18a/0x43c
> Ý<00000000002b1ac6>¨ qdio_cleanup+0x8a/0xec
> Ý<00000000002e2142>¨ qeth_qdio_clear_card+0x156/0x34c
> Ý<00000000002e85e4>¨ qeth_l2_shutdown+0x28/0x38
> Ý<000000000027fbd8>¨ device_shutdown+0x64/0xdc
> Ý<000000000013c958>¨ kernel_restart_prepare+0x3c/0x48
> Ý<000000000013c9be>¨ kernel_restart+0x1e/0x64
> Ý<000000000013d944>¨ sys_reboot+0x180/0x1b4
> Ý<0000000000112a34>¨ sysc_noemu+0x10/0x16
> Ý<000002000010e518>¨ 0x2000010e518
> Last Breaking-Event-Address:
> Ý<0000000000000000>¨ 0x0
> <4>---Ý end trace 3447a2a37b0771ca ¨---
> /etc/init.d/reboot.sh: line 7: 29476 Segmentation fault /sbin/reboot
> "${opts}" 2> /dev/null
> md: stopping all md devices.
> -mike
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