[OpenAFS-devel] [Hein Roehrig <hein@acm.org>] Bug#88851: oops with openafs-client

[Sam Hartman]

The Debian packages do not contain any changes that should matter for
the  kernel.  Advice for attempting to debug appreciated.


------- Start of forwarded message -------
Subject: Bug#88851: oops with openafs-client
Reply-To: Hein Roehrig <hein@acm.org>, 88851@bugs.debian.org
Resent-From: Hein Roehrig <hein@acm.org>
Resent-To: debian-bugs-dist@lists.debian.org
Resent-CC: Sam Hartman <hartmans@debian.org>
Resent-Date: Wed, 07 Mar 2001 17:33:02 GMT
Resent-Message-ID: <handler.88851.B.9839855904429@bugs.debian.org>
Resent-Sender: owner@bugs.debian.org
From: Hein Roehrig <hein@acm.org>
To: submit@bugs.debian.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Wed, 07 Mar 2001 18:19:40 +0100
Message-Id: <E14ahbC-0001RL-00@godot.normed.de>

Package: openafs-client
Version: 1.0.2-3

I can reproducibly create kernel oopses by rsyncing large amounts of
data (my homedirectory) into AFS. The oopses always start like

Mar  7 18:14:16 giek kernel: Bad refCount 0 on inode 0xd1b5a86c
Mar  7 18:14:16 giek kernel:  printing eip:
Mar  7 18:14:16 giek kernel: d1a2677d

My /var/cache/openafs has its own 500MB ext2 file system and the cache
is configured to use 200MB. Forcing fsck on that filesystem does not
yield any problem. Purging /var/cache/openafs does not affect the
error. The systme is running a self-compiled SMP 2.4.2 kernel with the
appropriate openafs-modules built from openafs-modules-source. Here is
a typical ksymoops output:

ksymoops 2.3.7 on i686 2.4.2.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.2/ (default)
     -m /boot/System.map-2.4.2 (default)

Warning: You did not tell me where to find symbol information.  I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc.  ksymoops -h explains the options.

Mar  7 18:14:16 giek kernel: d1a2677d
Mar  7 18:14:16 giek kernel: Oops: 0002
Mar  7 18:14:16 giek kernel: CPU:    1
Mar  7 18:14:16 giek kernel: EIP:    0010:[mga:mga_res_ctx+1262173/86211002]
Mar  7 18:14:16 giek kernel: EFLAGS: 00010286
Mar  7 18:14:16 giek kernel: eax: 00000023   ebx: d1b5a86c   ecx: 0000001f   edx: 00000002
Mar  7 18:14:16 giek kernel: esi: c8a9f440   edi: d1b5a86c   ebp: 00000001   esp: ca8d5eb0
Mar  7 18:14:16 giek kernel: ds: 0018   es: 0018   ss: 0018
Mar  7 18:14:16 giek kernel: Process rsync (pid: 373, stackpage=ca8d5000)
Mar  7 18:14:16 giek kernel: Stack: d1a48ea0 00000000 d1b5a86c d1a32e5b 3a9299cb 0000000a 3a9299cb d1a32fcf 
Mar  7 18:14:16 giek kernel:        d1a48ea0 00000000 d1b5a86c d1a32e5b c8a9f460 c8a9f440 c8a9f4c0 c0145989 
Mar  7 18:14:16 giek kernel:        c8a9f440 c02555d8 c8a9f440 c0145d80 c8a9f440 d1b5a86c c8a9f7c0 00000000 
Mar  7 18:14:16 giek kernel: Call Trace: [mga:mga_res_ctx+1403264/86069911] [mga:mga_res_ctx+2523980/84949195] [mga:mga_res_ctx+1313083/86160092] [mga:mga_res_ctx+1313455/86159720] [mga:mga_res_ctx+1403264/86069911] [mga:mga_res_ctx+2523980/84949195] [mga:mga_res_ctx+1313083/86160092] 
Mar  7 18:14:16 giek kernel: Code: c6 05 ff ff ff ff 2a 83 c4 10 83 c4 0c c3 90 55 57 56 53 8b 
Using defaults from ksymoops -t elf32-i386 -a i386

Code;  00000000 Before first symbol
00000000 <_EIP>:
Code;  00000000 Before first symbol
   0:   c6 05 ff ff ff ff 2a      movb   $0x2a,0xffffffff
Code;  00000007 Before first symbol
   7:   83 c4 10                  add    $0x10,%esp
Code;  0000000a Before first symbol
   a:   83 c4 0c                  add    $0xc,%esp
Code;  0000000d Before first symbol
   d:   c3                        ret    
Code;  0000000e Before first symbol
   e:   90                        nop    
Code;  0000000f Before first symbol
   f:   55                        push   %ebp
Code;  00000010 Before first symbol
  10:   57                        push   %edi
Code;  00000011 Before first symbol
  11:   56                        push   %esi
Code;  00000012 Before first symbol
  12:   53                        push   %ebx
Code;  00000013 Before first symbol
  13:   8b 00                     mov    (%eax),%eax


1 warning issued.  Results may not be reliable.



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