On Fri, 17 Feb 2006, Nathan Scott wrote:
On Thu, Feb 16, 2006 at 10:30:34AM -0800, Chris Stromsoe wrote:
I sent this to lkml yesterday. Short description of the problem -- xfs
on 2.6.15.4 without quota enabled is ok. When I try to mount with
"quota", the entire machine hangs. Details are below.
Could you try without 4Kstacks just for grins? Thanks. There was a
stack abuse accidentally introduced in the XFS quota mount path a month
or two back - I have a fix for that pending so that may just be it.
I rebuilt with the same config, but without 4K stacks. I have the xfs
partition mounted with quota enabled, and everything looks ok. I don't
have any content on the partition yet, but this is further than I got
yesterday. If you have patches to fix the 4K/8K issue, I'm willing to
test them to see if they do fix the problem with 4K stacks.
EIP is at a whacky spot, and your stack trace is all messed up - not
sure how we'd get into that situation on a mount with quotas, unless
something really bizzare happened (like a stack overflow).
All of the stack traces I got back while testing were different, and none
made much sense.
-Chris
cheers.
---------- Forwarded message ----------
Date: Thu, 16 Feb 2006 03:10:00 -0800 (PST)
From: Chris Stromsoe <[email protected]>
To: [email protected]
Subject: oops, 2.6.15.4 + qla1280+md+xfs+quota
I have a 2.6.15.4 system that was running fine. Internal drives are using the
Fusion MPT driver. I have two external JBODs with 12 disks each. Each JBOD has
two channels, 6 disks per channel, and each channel is connected to a QLogic
ISP 10160 controller.
Each of the JBODs is built as an md raid5 (md1 and md2). Both raid5s are
mirrored (md3). I had an ext3 filesystem running fine.
I unmounted md3, ran "mkfs.xfs /dev/md3 && mount /dev/md3" and the system hung.
md is built in, qla1280 and xfs are both modules. mount options in fstab are
rw, quota, noatime -- possibly also noexec and nosuid, but I don't think they
were enabled. XFS is built with XFS quota support; I've tried also with and
without generic quota support. 4K stacks are enabled, if that matters. Full
.config and dmesg output are at http://hashbrown.cts.ucla.edu/pub/oops-200602/
(config is with generic quota, dmesg has xfs loaded as a module and /dev/md3
mounted without quota set).
I added "defaults" and removed "quota" from fstab for /dev/md3 and was able to
mount the partition normally.
It's not responsive to sysrq on the serial console. The last output (without
generic quota) was:
XFS mounting filesystem md3
XFS quotacheck md3: Please wait.
Unable to handle kernel paging request at virtual address 00100178
printing eip:
c0114f5a
*pde = 00000000
Oops: 0000 [#1]
SMP
Modules linked in: xfs e1000 bonding qla1280 st
CPU: 0
EIP: 0060:[<c0114f5a>] Not tainted VLI
EFLAGS: 00010006 (2.6.15.4)
EIP is at do_page_fault+0x93/0x545
eax: eb7ac000 ebx: 00000001 ecx: 0000007b edx: 00100100
esi: 000001ff edi: c0114ec7 ebp: eb7ac0e8 esp: eb7ac094
ds: 007b es: 007b ss: 0068
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel NULL pointer dereference at virtual address 00000078
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address bebaee76
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address bebaee76
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
Unable to handle kernel paging request at virtual address 00100178
printing eip:
As soon as I mount the partition with quota in fstab, the machine hangs. The
oops is not always the same. During one test run, I saw a number of "BUG: soft
lockup detected on CPU#0" errors. The above oops is the only one I managed to
capture.
-Chris
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--
Nathan
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