linux-kernel - Re: kmemcheck: Caught 32-bit read from uninitialized memory (f6038ec0)

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Message-ID: <20080929131411.GA26442@elte.hu>
Date:	Mon, 29 Sep 2008 15:14:12 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Vegard Nossum <vegard.nossum@...il.com>
Cc:	Pekka Enberg <penberg@...helsinki.fi>, linux-kernel@...r.kernel.org
Subject: Re: kmemcheck: Caught 32-bit read from uninitialized memory
	(f6038ec0)


another crash is below - config attached.

	Ingo

----------------->
initcall 0xc08eabf0 returned 0 after 7 msecs
calling  0xc08eae70 @ 1
PnPBIOS: Scanning system for PnP BIOS support...
PnPBIOS: Found PnP BIOS installation structure at 0xc00fc550
PnPBIOS: PnP BIOS version 1.0, entry 0xf0000:0xc580, dseg 0xf0000
BUG: unable to handle kernel paging request at 0000c6ef
IP: [<c011ee33>]
*pde = 00000000 
Oops: 0000 [#1] SMP 
Modules linked in:

Pid: 1, comm: swapper Not tainted (2.6.27-rc7-tip-00980-g072062d-dirty #37107) System Product Name
EIP: 0060:[<c011ee33>] EFLAGS: 00010046 CPU: 0
EAX: 0000c6ef EBX: 0000c6ef ECX: 00000001 EDX: 00fd6000
ESI: 0000c6ef EDI: c190e220 EBP: f703fd96 ESP: f703fd8e
 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process swapper (pid: 1, ti=f703e000 task=f7040000 task.ti=f703e000)
Stack: 0000c6ef f703fe2e f703fdc6 c011e7c4 fdb4f708 00000001 f7080580 afeff703 
       7018c011 f703fdc6 c011afef f7080580 f703fe2e 00000002 f703fdde c011ebde 
       00000001 0000c695 00000034 c011a110 f703fe26 c011a56f fdf80000 ef22f703 
Call Trace:
 [<c011e7c4>] ? <0> [<c011afef>] ? <0> [<c011ebde>] ? <0> [<c011a110>] ? <0> [<c011a56f>] ? <0> [<c011a110>] ? <0> [<c06f2d12>] ? <0> =======================
Code: c7 02 02 00 00 00 eb df 8b 45 08 c7 00 01 00 00 00 eb d4 90 8d 74 26 00 55 89 e5 56 89 c6 53 eb 0a 8d b4 26 00 00 00 00 83 c6 01 <0f> b6 1e 89 d8 e8 f3 fe ff ff 84 c0 75 ef 81 e3 f0 00 00 00 31 
EIP: [<c011ee33>]  SS:ESP 0068:f703fd8e
Kernel panic - not syncing: Fatal exception

	Ingo

View attachment "config" of type "text/plain" (67982 bytes)