[LARTC] 2.4.20 htb3 oops

[Mihai RUSU <dizzy@roedu.net>]

Hello

After 4 days of uptime the new 2.4.20 kernel with HTB3 (previously we used
HTB2 and 2.4.9-31) oopsed and in short time I could not even ssh to the
system. Here is the ksymoops filtered message:

ksymoops 2.4.8 on i686 2.4.20-xfs.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.20-xfs/ (default)
     -m /usr/src/linux/System.map (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.

Oops: 0000
CPU:    1
EIP:    0010:[<c021be25>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 000000b0   ebx: 00000000   ecx: c031ad88   edx: 000000b0
esi: edb63de0   edi: f5220880   ebp: f5220880   esp: edb63d98
ds: 0018   es: 0018   ss: 0018
Process tc (pid: 7596, stackpageíb63000)
Stack: f5220800 00001831 ede963a0 ede963a0 f5220880 00000003 f5220860
c0214115
       f5220800 edb63de0 f69b3960 f2bc0140 ede963a0 f2bc0140 ede963b8
f28f95b0
       f757e800 00001831 00000000 000002a5 000002a6 c0214004 f69b3960
ede963a0
Call Trace:    [<c0214115>] [<c0214004>] [<c0221db7>] [<c0208bd9>]
[<c0221b9b>]
  [<c0221bc2>] [<c0203c91>] [<c020510f>] [<c0210010>] [<c0228186>]
[<c02281f0>]
  [<c0226ffa>] [<c0114515>] [<c02053ed>] [<c0106f17>]
Code: 8b 03 0f 18 00 39 fb 75 c2 83 44 24 10 08 83 c5 08 ff 44 24


>>EIP; c021be25 <htb_walk+89/ad>   <==
>>ecx; c031ad88 <irq_stat+28/400>
>>esi; edb63de0 <_end+2d81f388/384c35a8>
>>edi; f5220880 <_end+34edbe28/384c35a8>
>>ebp; f5220880 <_end+34edbe28/384c35a8>
>>esp; edb63d98 <_end+2d81f340/384c35a8>

Trace; c0214115 <tc_dump_tclass+dd/130>
Trace; c0214004 <qdisc_class_dump+0/34>
Trace; c0221db7 <netlink_dump+7f/1d4>
Trace; c0208bd9 <skb_free_datagram+1d/24>
Trace; c0221b9b <netlink_recvmsg+b7/134>
Trace; c0221bc2 <netlink_recvmsg+de/134>
Trace; c0203c91 <sock_recvmsg+3d/ac>
Trace; c020510f <sys_recvmsg+15b/204>
Trace; c0210010 <.text.lock.neighbour+24a/34a>
Trace; c0228186 <ip_forward+1a6/210>
Trace; c02281f0 <ip_forward_finish+0/60>
Trace; c0226ffa <ip_rcv+31a/3b0>
Trace; c0114515 <schedule+49d/560>
Trace; c02053ed <sys_socketcall+1f5/200>
Trace; c0106f17 <system_call+33/38>

Code;  c021be25 <htb_walk+89/ad>
00000000 <_EIP>:
Code;  c021be25 <htb_walk+89/ad>   <==   0:   8b 03                     mov    (%ebx),%eax   <==Code;  c021be27 <htb_walk+8b/ad>
   2:   0f 18 00                  prefetchnta (%eax)
Code;  c021be2a <htb_walk+8e/ad>
   5:   39 fb                     cmp    %edi,%ebx
Code;  c021be2c <htb_walk+90/ad>
   7:   75 c2                     jne    ffffffcb <_EIP+0xffffffcb>
c021bdf0 <htb_walk+54/ad>
Code;  c021be2e <htb_walk+92/ad>
   9:   83 44 24 10 08            addl   $0x8,0x10(%esp,1)
Code;  c021be33 <htb_walk+97/ad>
   e:   83 c5 08                  add    $0x8,%ebp
Code;  c021be36 <htb_walk+9a/ad>
  11:   ff 44 24 00               incl   0x0(%esp,1)


1 warning issued.  Results may not be reliable.

$ /usr/src/linux/scripts/ver_linux

Linux htb 2.4.20-xfs #3 SMP Fri Jan 17 17:14:53 EET 2003 i686 unknown

Gnu C                  2.95.3
Gnu make               3.79.1
util-linux             2.11r
mount                  2.11r
modutils               2.4.16
e2fsprogs              1.27
Linux C Library        2.2.5
Dynamic linker (ldd)   2.2.5
Procps                 2.0.7
Net-tools              1.60
Kbd                    1.06
Sh-utils               2.0
Modules Loaded         sch_sfq e1000

$ cat /etc/fstab
/dev/sda1        swap             swap        defaults         0   0
/dev/sda2        /                ext2        defaults         1   1
/dev/sda3        /var             xfs         defaults         0   0
/dev/cdrom       /mnt/cdrom       iso9660     noauto,owner,ro  0   0
/dev/fd0         /mnt/floppy      auto        noauto,owner     0   0
none             /dev/pts         devpts      gid=5,modeb0   0   0
none             /proc            proc        defaults         0   0

After the oops applications that were trying to write to the /var (xfs)
partition were hanging in D state. We will reformat it and reboot with a
vanilla 2.4.20 having the same config except the XFS filesystem.

Help ?

----------------------------
Mihai RUSU

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