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RE: system hang + kernel oops because of high usb load?

>Trace; c004aa20 <Watchdog_bite+1a/1c>

The watchdog bites you but I can't understand why because the watchdog
only bites if no timer IRQs are received. Maybe there is something in
this chain that disables interrupts?


-----Original Message-----
From: owner-dev-etrax@xxxxxxx.com">mailto:owner-dev-etrax@xxxxxxx.com] On
Behalf Of Friedrich Lobenstock
Sent: Tuesday, December 16, 2003 3:48 PM
To: dev-etrax
Subject: system hang + kernel oops because of high usb load?


The setup:

                     eth0        eth1
Host1----------------Axis DevB.82--------------Host2 (Internet Gateway)   
                      configured as bridge

On Host1 I ran:
   * a realaudio stream (96KBit) from the internet
   * ping -f
   * and at the same time
     ping -f

After some time (approx. 1 hour IIRC) I see the following
messages appear on the console:
Found enabled EP for epid 0, starting bulk channel.
Found enabled EP for epid 0, starting bulk channel.

Then some minutes later the system locks up and finally
a kernel oops.

ksymoops -k /dev/null -l /dev/null -o /dev/null -m
System.map-axis-capture-2003-12-16-14\:48 <
ksymoops 2.4.8 on i686 2.4.20-4GB.  Options used
      -V (default)
      -k /dev/null (specified)
      -l /dev/null (specified)
      -o /dev/null (specified)
      -m System.map-axis-capture-2003-12-16-14:48 (specified)

Error (regular_file): read_ksyms /dev/null is not a regular file,
No modules in ksyms, skipping objects
No ksyms, skipping lsmod
Oops: bitten by watchdog
IRP: c0af0010 SRP: c0082f9e DCCR: 00000424 USP: 9ffff978 MOF: 00000000
Using defaults from ksymoops -t elf32-i386 -a i386
  r0: c0af1cd4  r1: c0c5f9e4   r2: 80000000  r3: c0c70008
  r4: 00000000  r5: c0af1cd8   r6: c00c0000  r7: 00000000
  r8: c00c391e  r9: c00f87cc  r10: 00000000 r11: c0af1cd8
r12: c0c70008 r13: 00000000 oR10: 00000000
Process busybox (pid: 874, stackpage=c0af0000)
Stack from 9ffff978:
        3564a4c0 00000000 355670f0 9ffffa1c 356494fc 35567a92 35650f70
        3564a4f0 35566b14 3563cf68 9ffffa1c 3555d0be 356fde6c 9ffffaa8
        35566ee4 3556708c 00000000 00000001 35567960 00000000 35566b14
Call Trace:
Stack from c0af1be4:
        c0008532 c0af1c60 c004ab7e c004acdc c0af1cd8 00000000 00000000
        80000000 c0c5f9e4 c0af1c1c c004ad5c c0af1cd4 c004aa20 00000000
        00000000 c0c70008 c0af1cd8 00000000 c00f87cc c00c391e 00000000
Call Trace: [<c0008532>] [<c004ab7e>] [<c004acdc>] [<c004ad5c>]
[<c004aa20>] [<c00c391e>] [<c00c0000>]
        [<c0082f9e>] [<c0082f9e>] [<c00c391c>] [<c008336c>] [<c00c391c>]
[<c00c184c>] [<c00c184c>] [<c00c3de2>]
        [<c00c391c>] [<c0082f9e>] [<c00c184c>] [<c008336c>] [<c00c184c>]
[<c00c1ab0>] [<c00c184c>] [<c007e152>]
        [<c007e28a>] [<c007e388>] [<c000a5b4>] [<c004b830>] [<c004b34e>]
[<c00123b0>] [<c00c4618>] [<c001248c>]
        [<c004cfbc>] [<c00129e8>] [<c0019044>] [<c00764ec>] [<c000a936>]
[<c000cddc>] [<c000a884>] [<c000a7c0>]
        [<c000a5b4>] [<c004b830>] [<c004ce5c>] [<c004a996>]
Code: 00 00 00 00 00 00 00 00 00 00 00 a0 (dc) 64 0e c0 01 00 00 00 00
00 00 00

 >>EIP; c0af0010 <_end+93c590/e4c580>   <=====

 >>IRP; c0af0010 <_end+93c590/e4c580>
 >>SRP; c0082f9e <nf_iterate+42/7e>
 >>IRP; c0af0010 <_end+93c590/e4c580>
 >>SRP; c0082f9e <nf_iterate+42/7e>
 >>r0; c0af1cd4 <_end+93e254/e4c580>
 >>r1; c0c5f9e4 <_end+aabf64/e4c580>
 >>r3; c0c70008 <_end+abc588/e4c580>
 >>r5; c0af1cd8 <_end+93e258/e4c580>
 >>r6; c00c0000 <packet_getsockopt+20/126>
 >>r8; c00c391e <br_nf_pre_routing_finish+2/222>
 >>r9; c00f87cc <nf_hooks+80/800>
 >>r11; c0af1cd8 <_end+93e258/e4c580>
 >>r12; c0c70008 <_end+abc588/e4c580>

Trace; c0008532 <printk+0/14e>
Trace; c004ab7e <show_stack+0/8a>
Trace; c004acdc <show_registers+d4/13a>
Trace; c004ad5c <watchdog_bite_hook+1a/1e>
Trace; c004aa20 <Watchdog_bite+1a/1c>
Trace; c00c391e <br_nf_pre_routing_finish+2/222>
Trace; c00c0000 <packet_getsockopt+20/126>
Trace; c0082f9e <nf_iterate+42/7e>
Trace; c0082f9e <nf_iterate+42/7e>
Trace; c00c391c <br_nf_pre_routing_finish+0/222>
Trace; c008336c <nf_hook_slow+c4/14e>
Trace; c00c391c <br_nf_pre_routing_finish+0/222>
Trace; c00c184c <br_handle_frame_finish+0/11c>
Trace; c00c184c <br_handle_frame_finish+0/11c>
Trace; c00c3de2 <br_nf_pre_routing+2a4/2b0>
Trace; c00c391c <br_nf_pre_routing_finish+0/222>
Trace; c0082f9e <nf_iterate+42/7e>
Trace; c00c184c <br_handle_frame_finish+0/11c>
Trace; c008336c <nf_hook_slow+c4/14e>
Trace; c00c184c <br_handle_frame_finish+0/11c>
Trace; c00c1ab0 <br_handle_frame+148/184>
Trace; c00c184c <br_handle_frame_finish+0/11c>
Trace; c007e152 <netif_receive_skb+102/1d0>
Trace; c007e28a <process_backlog+6a/108>
Trace; c007e388 <net_rx_action+60/ee>
Trace; c000a5b4 <do_softirq+58/9c>
Trace; c004b830 <do_IRQ+82/86>
Trace; c004b34e <sIRQ17_interrupt+18/2e>
Trace; c00123b0 <do_no_page+d4/15c>
Trace; c00c4618 <memcpy+34/148>
Trace; c001248c <handle_mm_fault+54/c8>
Trace; c004cfbc <do_page_fault+15c/2cc>
Trace; c00129e8 <__vma_link+52/a8>
Trace; c0019044 <kmem_cache_free+12/18>
Trace; c00764ec <etrax_usb_hc_interrupt_bottom_half+7e/82>
Trace; c000a936 <__run_task_queue+48/54>
Trace; c000cddc <immediate_bh+16/18>
Trace; c000a884 <bh_action+24/58>
Trace; c000a7c0 <tasklet_hi_action+62/80>
Trace; c000a5b4 <do_softirq+58/9c>
Trace; c004b830 <do_IRQ+82/86>
Trace; c004ce5c <handle_mmu_bus_fault+b0/b4>
Trace; c004a996 <mmu_bus_fault+28/30>

Code;  c0af0004 <_end+93c584/e4c580>
00000000 <_EIP>:
Code;  c0af000c <_end+93c58c/e4c580>
    8:   00 00                     add    %al,(%eax)
Code;  c0af000e <_end+93c58e/e4c580>   <=====
    a:   00 a0 dc 64 0e c0         add    %ah,0xc00e64dc(%eax)   <=====
Code;  c0af0014 <_end+93c594/e4c580>
   10:   01 00                     add    %eax,(%eax)

1 error issued.  Results may not be reliable.

MfG / Regards
Friedrich Lobenstock