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SubjectRe: bug at buffer.c:2513
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Okay, my bad.  Not only didn't I get /dev/ksyms the first time, but I
wasn't able to reproduce an oops which didn't also include destruction
of the interrupt handler. In the end, it was a bad memory module.
Sorry for the noise.

-Paul Komarek

On Thu, 2003-01-30 at 03:48, Paul Komarek wrote:
> Kernel 2.4.21-pre4 told me it has a bug in buffer.c:2513. The relevant
> lines of fs/buffer.c are
>
> 2512: if (size < 512 || size > PAGE_SIZE)
> 2513: BUG();
>
> I'm running kernel 2.4.21-pre4 compiled for i386 on a natsemi geode gx1
> with ns cs5530a (Acrosser AR-B1565,
> http://www.acrosser.com/products/ar-b1565.htm). I was running rsync at
> the time of the bug message. Below is the bug message:
>
> ----------------------------------------------------------------------------------
> kernel BUG at buffer.c:2513!
> invalid operand: 0000
> CPU: 0
> EIP: 0010:[<c01340cf>] Not tainted
> EFLAGS: 00010286
> eax: c6000e00 ebx: 00000000 ecx: 00000200 edx: 00000000
> esi: 00000300 edi: c6001000 ebp: 00000300 esp: c5959e3c
> ds: 0018 es: 0018 ss: 0018
> Process rsync (pid: 161, stackpage=c5959000)
> Stack: 00000000 00000300 c6001000 00120087 c0132209 00000300 00120087
> c6001000
> c78ec800 00000480 c1637ac0 00083780 c01323f4 00000300 00120087
> c6001000
> 00000300 c01554d0 00000300 00120087 c6001000 00000024 00120087
> 00000000
> Call Trace: [<c0132209>] [<c01323f4>] [<c01554d0>] [<c0155e60>]
> [<c0160a9f>]
> [<c0155f04>] [<c015abe7>] [<c0155fcf>] [<c0142393>] [<c012697d>]
> [<c0151c57>]
> [<c01308fc>] [<c0108967>]
>
> Code: 0f 0b d1 09 5a 6a 27 c0 b9 ff ff ff ff 41 89 f8 d3 e0 3d ff
> rsync: connection unexpectedly closed (802675 bytes read so far)
> rsync error: error in rsync protocol data stream (code 12) at io.c(150)
> ---------------------------------------------------------------------------------
>
> If anyone is interested, I can provide details about my kernel config
> and run experiments. I'd like to be a proper kernel-hacker, figure this
> out myself, and be generally cool; however, I need to finish my degree
> before my advisor notices I'm posting on lkml.
>
> Please cc me (komarek_at_cmu_edu) on any messages you want me to read.
>
> -Paul Komarek
>
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