From: Andrew Morton <akpm@digeo.com>
To: Helge Hafting <helgehaf@aitel.hist.no>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: Re: 2.5.52-mm1 kernel BUG at mm/page_walk.c:430!
Date: Tue, 17 Dec 2002 09:10:25 -0800 [thread overview]
Message-ID: <3DFF5A80.46051426@digeo.com> (raw)
In-Reply-To: <3DFEDE0B.E0F692A4@aitel.hist.no>
Helge Hafting wrote:
>
> X suddenly died, and was restarted. I found this in dmesg:
>
> kernel BUG at mm/page_walk.c:430!
> invalid operand: 0000
> CPU: 0
> EIP: 0060:[<c013beeb>] Not tainted
> EFLAGS: 00013246
> EIP is at make_pages_present+0x77/0xbc
> eax: d0efa344 ebx: 6b6b6b6b ecx: 000000a0 edx: c1604954
> esi: 6b6b6b6b edi: 00009000 ebp: d0efa344 esp: de555ef8
> ds: 0068 es: 0068 ss: 0068
> Process XFree86 (pid: 246, threadinfo=de554000 task=dfc00d80)
> Stack: 00000000 de9c35cc 00000001 d0efa344 6b6b6b6b d0efa344 de555f00
> dfc00d80
> c1604954 00009000 c013be64 00000000 c0136d78 6b6b6b6b 6b6b6b6b
> d0efa344
> de554000 000a0000 00009000 d0efa344 00000000 d0efa344 c1604954
> d0efa344
> Call Trace:
> [<c013be64>] gup_mk_present+0x0/0x10
> [<c0136d78>] move_vma+0x3d4/0x404
> [<c01370c8>] do_mremap+0x320/0x34c
> [<c0137142>] sys_mremap+0x4e/0x6f
> [<c0108973>] syscall_call+0x7/0xb
>
Seems to be just a bogus assertion. A shrinking, relocating mremap
against a VMA which has !MREMAP_MAYMOVE will call make_pages_present()
for zero pages.
You can remove mm:page_walk.c:430.
Thanks.
next prev parent reply other threads:[~2002-12-17 17:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-16 8:36 2.5.52-mm1 Andrew Morton
2002-12-17 8:19 ` 2.5.52-mm1 kernel BUG at mm/page_walk.c:430! Helge Hafting
2002-12-17 17:10 ` Andrew Morton [this message]
2002-12-18 12:26 ` 2.5.52-mm1 Ed Tomlinson
2002-12-18 16:37 ` 2.5.52-mm1 Andrew Morton
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