linux-kernel - [kmemcheck] visual_init(): Caught 32-bit read from unallocated memory (bf820028)

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Message-ID: <20091004163224.GA10493@elte.hu>
Date:	Sun, 4 Oct 2009 18:32:24 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Pekka Enberg <penberg@...helsinki.fi>,
	Vegard Nossum <vegard.nossum@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: [kmemcheck] visual_init(): Caught 32-bit read from unallocated
	memory (bf820028)


hi,

got this kmemcheck warning in -tip testing:

[    0.000000] WARNING: kmemcheck: Caught 32-bit read from unallocated memory (bf820028)
[    0.000000] 0000000000000000000000000000000000000000000000000000000000000000
[    0.000000]  a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
[    0.000000]                  ^
[    0.000000] 
[    0.000000] Pid: 0, comm: swapper Not tainted (2.6.32-rc2-tip-01349-g1ade8d6-dirty #218) P4DC6
[    0.000000] EIP: 0060:[<812d78c0>] EFLAGS: 00010286 CPU: 0
[    0.000000] EIP is at visual_init+0x10/0x130
[    0.000000] EAX: bf820000 EBX: bf820000 ECX: 00000001 EDX: 00000000
[    0.000000] ESI: 00000200 EDI: 00000000 EBP: 81abdf7c ESP: 81c1a94c
[    0.000000]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[    0.000000] CR0: 8005003b CR2: bf820028 CR3: 01c10000 CR4: 000006d0
[    0.000000] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[    0.000000] DR6: ffff4ff0 DR7: 00000400
[    0.000000]  [<81b99d82>] con_init+0xf2/0x2b0
[    0.000000]  [<81b99239>] console_init+0x19/0x30
[    0.000000]  [<81b7492d>] start_kernel+0x1cd/0x340
[    0.000000]  [<81b74091>] i386_start_kernel+0x61/0x90
[    0.000000]  [<ffffffff>] 0xffffffff
[    0.000000]   ok  |  ok  |  ok  |

seems new at first glance. Config attached.

	Ingo

View attachment "config" of type "text/plain" (76877 bytes)