linux-kernel - Re: [BUG] 2.6.23-rc9 kernel panic

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Message-Id: <20071016134620.7b3ce56f.akpm@linux-foundation.org>
Date:	Tue, 16 Oct 2007 13:46:20 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
Cc:	linux-kernel@...r.kernel.org,
	David Woodhouse <dwmw2@...radead.org>,
	linux-mtd@...ts.infradead.org
Subject: Re: [BUG] 2.6.23-rc9 kernel panic - simple_map_write+0x4e/0x75

On Sat, 13 Oct 2007 12:10:44 +0530
Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com> wrote:

> Kernel panic's with following oops message with 2.6.23-rc9 kernel 
> 
> [  320.747257] ks0108: ERROR: parport didn't register new device
> [  320.771314] cfag12864b: ERROR: ks0108 is not initialized
> [  320.794308] cfag12864bfb: ERROR: cfag12864b is not initialized
> [  320.820729] BUG: unable to handle kernel paging request at virtual address
> bf000000
> [  320.857712]  printing eip:
> [  320.872556] *pde = 00000000
> [  320.887577] Oops: 0002 [#1]
> [  320.902383] SMP 
> [  320.914174] Modules linked in:
> [  320.929333] CPU:    0
> [  320.929334] EIP:    0060:[<c0d7e4e2>]    Not tainted VLI
> [  320.929335] EFLAGS: 00010286   (2.6.23-rc9-1 #1)
> [  320.982753] EIP is at simple_map_write+0x4e/0x75
> [  321.001956] eax: f0f0f0f0   ebx: c1de3f00   ecx: c1de3f00   edx: c1de3f00
> [  321.027701] esi: c3ca8d6c   edi: bf000000   ebp: c3ca8d98   esp: c3ca8d6c
> [  321.053322] ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0068
> [  321.075981] Process swapper (pid: 1, ti=c3ca8000 task=f7f44000 task.ti=c3ca8000)
> [  321.103031] Stack: f0f0f0f0 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 
> [  321.139446]        c3ca8e20 00000001 c3ca8e40 c3ca8e6c c0d692e6 f0f0f0f0
> 00000000 00000000 
> [  321.176495]        00000000 00000000 00000000 00000000 00000000 00000000
> 00000000 000050e6 
> [  321.214141] Call Trace:
> [  321.233922]  [<c0107dff>] show_trace_log_lvl+0x19/0x2e
> [  321.255433]  [<c0107ec1>] show_stack_log_lvl+0x99/0xa1
> [  321.276706]  [<c01080c4>] show_registers+0x1b8/0x290
> [  321.297254]  [<c01082f9>] die+0x118/0x1fd
> [  321.314920]  [<c145014a>] do_page_fault+0x51c/0x5f3
> [  321.335291]  [<c144e6da>] error_code+0x72/0x78
> [  321.354413]  [<c0d692e6>] cfi_probe_chip+0x148/0x9e1
> [  321.375202]  [<c0d7bb3e>] genprobe_new_chip+0x82/0x98
> [  321.396298]  [<c0d7b8dd>] genprobe_ident_chips+0x26/0x205
> [  321.418493]  [<c0d7b830>] mtd_do_chip_probe+0x10/0x97
> [  321.439654]  [<c0d6a29e>] cfi_probe+0xd/0xf
> [  321.458157]  [<c0d68d57>] do_map_probe+0x40/0x53
> [  321.477931]  [<c200d748>] init_pnc2000+0x3b/0x6d
> [  321.497559]  [<c1fa382c>] do_initcalls+0x7a/0x1c2
> [  321.517377]  [<c1fa3990>] do_basic_setup+0x1c/0x1e
> [  321.537327]  [<c1fa3a2c>] kernel_init+0x69/0xaa
> [  321.556311]  [<c0107c2b>] kernel_thread_helper+0x7/0x10
> [  321.577207]  =======================
> [  321.592882] Code: 83 f8 01 75 0a 03 7b 10 8b 45 d4 88 07 eb 35 83 f8 02 75 0c
> 0f b7 45 d4 03 7b 10 66 89 07 eb 24 83 f8 04 75 0a 03 7b 10 8b 45 d4 <89> 07 eb
> 15 7e 13 03 7b 10 89 c1 c1 e9 02 f3 a5 89 c1 83 e1 03 
> [  321.668990] EIP: [<c0d7e4e2>] simple_map_write+0x4e/0x75 SS:ESP 0068:c3ca8d6c
> [  321.695750] Kernel panic - not syncing: Attempted to kill init!

Would I be correct in assuming that the machine has no mtd devices, but
you happened to link that driver into your vmlinux?

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