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Date: Wed, 14 Mar 2007 13:23:02 +0200 From: "Pekka Enberg" <penberg@...helsinki.fi> To: gregkh@...e.de Cc: linux-kernel@...r.kernel.org, "Chris Rankin" <rankincj@...oo.com> Subject: Re: [BUG] Linux 2.6.20.2 - unable to handle kernel paging request - still accessing freed memory Hi Greg, I think there's some sort of reference counting problem with sysfs in 2.6.20 kernels. Can you please help us debug it further? On 3/10/07, Chris Rankin <rankincj@...oo.com> wrote: > It looks like 2.6.20.2 is still doing Bad Things in /sys. > > BUG: unable to handle kernel paging request at virtual address 6b6b6d6b [snip] > EIP: 0060:[<c01300ff>] Not tainted VLI > EFLAGS: 00010202 (2.6.20.2 #1) > EIP is at module_put+0x20/0x52 > eax: 6b6b6d6b ebx: 6b6b6b6b ecx: 00000001 edx: e7a01000 > esi: edb7e4e4 edi: 6b6b6b6b ebp: e79fd50c esp: e7a01f58 > ds: 007b es: 007b ss: 0068 > Process udevd (pid: 9656, ti=e7a01000 task=f7a46030 task.ti=e7a01000) > Stack: eba628a0 c0183a1e 00000010 ed570870 e7a641d0 c0151263 00000000 00000000 > f7ff2208 ed570870 f745b678 00000000 ed570870 c014eda0 00000003 00000003 > f745b678 f745b6f8 c014fd99 00000003 00000007 00000003 e7a01000 c0102bde > Call Trace: > [<c0183a1e>] sysfs_release+0x2d/0x4c > [<c0151263>] __fput+0x96/0x13c > [<c014eda0>] filp_close+0x51/0x58 > [<c014fd99>] sys_close+0x70/0xa7 > [<c0102bde>] sysenter_past_esp+0x5f/0x85 > [<c0270033>] __sched_text_start+0x613/0x971 There's also some previous discussion here: http://lkml.org/lkml/2007/3/1/114 Pekka - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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