[Prism54-devel] kfree_skb passed an skb still on a list

[Bruno Randolf]

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hi!

now it happened again, with firmware 1.0.3.0.
btw: the oops is on the AP, not on the client.

greetings.
bruno

On Friday 16 July 2004 11:37, Bruno Randolf wrote:
> hello!
>
> i also have stability problems with prism54 on my meshcube (mipsel). i have
> one cube as AP and another one as client, both with EZWFM05 miniPCI cards
> (isl3880) from eazix. it crashes about every hour, when i permanently
> generate traffic with netperf. i'm using kernel 2.4.24 and prism54 1.2.
> this error occurred with firmware 1.0.4.3. i also tried 1.0.3.0, where it
> ran for about 3 hours without problems.
>
> now i catched this oops on the serial console, hope it is of some value.
> this is the error fed thru ksymoops:
>
> Warning: kfree_skb passed an skb still on a list (from 8020c344).
> Break instruction in kernel code in traps.c::do_bp, line 591:
> $0 : 00000000 1000fc00 00000045 00000001 00000000 82978000 0000001f
> 802b6920 $8 : 00000001 ffffd875 00001875 00000000 fffffffe ffffffff
> 00000010 00000007 $16: 803a6080 803a6080 fffffffd 1000fc00 82979e60
> 10001304 7fff7bf8 7fff79ec $24: 82979cdf 80314b0f                  
> 82978000 82979dc0 7fff7750 8020710c Hi : 00000000
> Lo : 00000000
> epc   : 8020710c    Not tainted
> Using defaults from ksymoops -t elf32-tradlittlemips -a mips:3000
> Status: 1000fc03
> Cause : 00800024
> Process netserver (pid: 2115, stackpage=82978000)
> Stack:    82979e60 8020c344 00000000 803101a0 829b40c0 8020c344 00000000
>  ffffdfff 811d39c0 02000001 00000000 802cf070 8011610c 416cc350 82979e68
>  00000001 00000000 4620a500 802ce020 811d39c0 fffffffb 00000001 80101340
>  828ed768 00015554 100076f0 00000000 00e61a80 1001cc50 0000288d 00000003
>  00000002 10001308 80283708 00000000 801b47f0 82979e40 00000001 80282ba8
>  416cc29b ...
> Call Trace:   [<8020c344>] [<8020c344>] [<8011610c>] [<80101340>]
> [<80283708>] [<801b47f0>] [<80282ba8>] [<80206ec0>] [<80204468>]
> [<8020447c>] [<80204370>] [<80283708>] [<801074e0>] [<801045e8>]
> [<80160178>]
> Code: 3c04802a  0c0443d8  2484c54c <0000800d> 08081be5  8e03002c  3c028033
> 8c4
> Error (Oops_code_values): invalid value 0x8c4 in Code line, must be 2, 4, 8
> or 16 digits, value ignored
>
> >>$5; 82978000 <_end+2640fc0/3fe3d020>
> >>$7; 802b6920 <print_memory_map+d4/100>
> >>$16; 803a6080 <_end+6f040/3fe3d020>
> >>$17; 803a6080 <_end+6f040/3fe3d020>
> >>$20; 82979e60 <_end+2642e20/3fe3d020>
> >>$24; 82979cdf <_end+2642c9f/3fe3d020>
> >>$25; 80314b0f <printk_buf.4+3ff/400>
> >>$28; 82978000 <_end+2640fc0/3fe3d020>
> >>$29; 82979dc0 <_end+2642d80/3fe3d020>
> >>$31; 8020710c <__kfree_skb+194/1a0>
> >>
> >>PC;  8020710c <__kfree_skb+194/1a0>   <=====
>
> Trace; 8020c344 <net_tx_action+84/14c>
> Trace; 8020c344 <net_tx_action+84/14c>
> Trace; 8011610c <do_softirq+17c/184>
> Trace; 80101340 <do_IRQ+114/11c>
> Trace; 80283708 <intc0_req0_irqdispatch+80/8c>
> Trace; 801b47f0 <fpu_emu+99c/d90>
> Trace; 80282ba8 <au1000_IRQ+128/1a0>
> Trace; 80206ec0 <kfree_skbmem+14/cc>
> Trace; 80204468 <sys_recv+0/20>
> Trace; 8020447c <sys_recv+14/20>
> Trace; 80204370 <sys_recvfrom+0/f8>
> Trace; 80283708 <intc0_req0_irqdispatch+80/8c>
> Trace; 801074e0 <stack_done+1c/38>
> Trace; 801045e8 <handle_cpu_int+20/38>
> Trace; 80160178 <create_proc_entry+58/d0>
>
> Code;  80207100 <__kfree_skb+188/1a0>
> 00000000 <_PC>:
> Code;  80207100 <__kfree_skb+188/1a0>
>    0:   3c04802a  lui     a0,0x802a
> Code;  80207104 <__kfree_skb+18c/1a0>
>    4:   0c0443d8  jal     110f60 <_PC+0x110f60>
> Code;  80207108 <__kfree_skb+190/1a0>
>    8:   2484c54c  addiu   a0,a0,-15028
> Code;  8020710c <__kfree_skb+194/1a0>   <=====
>    c:   0000800d  break   0x0,0x200   <=====
> Code;  80207110 <__kfree_skb+198/1a0>
>   10:   08081be5  j       206f94 <_PC+0x206f94>
> Code;  80207114 <__kfree_skb+19c/1a0>
>   14:   8e03002c  lw      v1,44(s0)
> Code;  80207118 <skb_clone+0/2a0>
>   18:   3c028033  lui     v0,0x8033
>
> Kernel panic: Aiee, killing interrupt handler!
> _______________________________________________
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