[Prism54-devel] [Bug 82] New: Kernel oops under continuous medium high load

[bugzilla-daemon@mcgrof.com]

http://prism54.org/cgi-bin/bugzilla/show_bug.cgi?id=82

           Summary: Kernel oops under continuous medium high load
           Product: prim54
           Version: 1.0.2.2
          Platform: ia32
        OS/Version: Linux 2.6
            Status: NEW
          Severity: major
          Priority: P2
         Component: Device Driver
        AssignedTo: prism54-devel@prism54.org
        ReportedBy: janl@langfeldt.net


Hi,

System:
- 2.8GHz P4, HT disabled, 1G memory
- 2.6.5 kernel with stock prism54 driver
- SMC2802W EU prism54 PCI card, bought last fall.  Running in a ad-hoc B net.
The other cards are Orinocos and a Airport card.

My machine can be reliably be brought down within 24 hours.  What I have to do
is to take part in some bittorrents and otherwise go about my business.  I have
1Mbps incomming so the load is not all that high.  The first few hours
everything is fine.  Then I start seeing packet loss. This packet-loss is
reduced when I move the laptop closer to the machine.  It helps to bring the
machine down if I try to use rsync to load some files of this machine onto my
laptop.  Rsync seems to stress systems quite thorougly.

This is iwconfig for the card:
root@roke /home/janl # iwconfig eth1
eth1      IEEE 802.11b/g  ESSID:"LangfeldtWLLan"
          Mode:Ad-Hoc  Channel:1  Cell: 86:FF:3D:F4:2C:E8
          Bit Rate:11Mb/s   Tx-Power=31 dBm   Sensitivity=20/200
          Retry min limit:8   RTS thr:2347 B   Fragment thr:2346 B
          Encryption key:off
          Link Quality:207/0  Signal level:-67 dBm  Noise level:-239 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

I've had several crashes, but this is the first time I've been able to catch the
oops (turned off the screen saver on the console and used digi-cam to take a
picture).  Ksymoops says:

Error (regular_file): read_ksyms stat /proc/ksyms failed
ksymoops: No such file or directory
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
EFLAGS: 00010292  (2.6.5-UP-nfb)
eax: 0000002e   ebx: f77ba800   ecx: c02edcd0   edx: 00000296
esi: c02bd515   edi: f77baa20   epb: 00000002   esp: c035df20
Warning (Oops_set_regs): garbage 'epb: 00000002   esp: c035df20' at end of
register line ignored
ds: 007b   es: 007b   ss: 0068
Stack: c02d8920 f89a967f 00000a14 00000511 f77ba800 00000511 c1c66480 f89a9684
       f89b0538 00000000 f7740000 f77ba800 f77ba800 00000002 f77baa20 c035dfac
       f89ad57f c035df60 00000000 f786fb20 04000001 00000000 c01080da 0000000c
Call Trace:
 [<f89a967f>] islpci_eth_receive+0x2b6/0x2cd [prism54]
 [<f89a9684>] islpci_eth_receive+0x2bb/0x2cd [prism54]
 [<f89ad57f>] islpci_interrupt+0x17f/0x226 [prism52]
 [<c01080da>] handle_IRQ_event+0x2f/0x55
 [<c01083db>] do_IRQ+0x86/0x122
 [<c0106c48>] common_interrupt+0x18/0x20
 [<c0104a6d>] default_idle+0x23/0x26
 [<c0104acb>] cpu_idle+0x2c/0x35
 [<c035e674>] start_kernel+0x14b/0x165
 [<c035e3fb>] unknown_bootoption+0x0/0x10b
Code: 0f 0b 58 00 b2 71 2d c0 8b 5c 24 14 8b 74 24 18 83 c4 1c c3
Using defaults from ksymoops -t elf32-i386 -a i386


>>ebx; f77ba800 <pg0+373ad800/3fbf1000>
>>ecx; c02edcd0 <fmt.1+720e/33592>
>>esi; c02bd515 <ip_mc_join_group+2a/1b2>
>>edi; f77baa20 <pg0+373ada20/3fbf1000>

Trace; f89a967f <pg0+3859c67f/3fbf1000>
Trace; f89a9684 <pg0+3859c684/3fbf1000>
Trace; f89ad57f <pg0+385a057f/3fbf1000>
Trace; c01080da <do_bounds+5f/8d>
Trace; c01083db <do_alignment_check+45/aa>
Trace; c0106c48 <resume_userspace+14/18>
Trace; c0104a6d <gunzip+4e7/4fa>
Trace; c0104acb <poll_idle+5/33>
Trace; c035e674 <pci_bus_type+34/100>
Trace; c035e3fb <pci_class_numbers+bb/c0>

Code;  00000000 Before first symbol
00000000 <_EIP>:
Code;  00000000 Before first symbol
   0:   0f 0b                     ud2a
Code;  00000002 Before first symbol
   2:   58                        pop    %eax
Code;  00000003 Before first symbol
   3:   00 b2 71 2d c0 8b         add    %dh,0x8bc02d71(%edx)
Code;  00000009 Before first symbol
   9:   5c                        pop    %esp
Code;  0000000a Before first symbol
   a:   24 14                     and    $0x14,%al
Code;  0000000c Before first symbol
   c:   8b 74 24 18               mov    0x18(%esp,1),%esi
Code;  00000010 Before first symbol
  10:   83 c4 1c                  add    $0x1c,%esp
Code;  00000013 Before first symbol
  13:   c3                        ret

 <0>Kernel panic: Fatal exception in interrupt



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