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Date: Tue, 28 Sep 2004 00:12:41 -0700
From: Kris Kennaway <kris@obsecurity.org>
To: Kris Kennaway <kris@obsecurity.org>
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cc: sparc64@freeBSD.org
Subject: Re: Memory modified after free 0xfffff8001b210e00(504) val=deadc0dd
	@ 0xfffff8001b21
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On Mon, Sep 20, 2004 at 11:44:50PM -0700, Kris Kennaway wrote:
> I just got this panic on an SMP sparc package machine running 6.0:
>=20
> Memory modified after free 0xfffff8001b210e00(504) val=3Ddeadc0dd @ 0xfff=
ff8001b210f20
> panic: Most recently used by file desc
> cpuid =3D 0
> KDB: enter: panic
> [thread 100195]
> Stopped at      kdb_enter+0x38: ta              %xcc, 1
> db> trace
> panic() at panic+0x19c
> mtrash_ctor() at mtrash_ctor+0x7c
> uma_zalloc_arg() at uma_zalloc_arg+0x3e8
> malloc() at malloc+0xa8
> fdinit() at fdinit+0x40
> fdcopy() at fdcopy+0x28
> fork1() at fork1+0x770
> fork() at fork+0x10
> syscall() at syscall+0x220
> -- syscall (2, FreeBSD ELF64, fork) %o7=3D0x10fe00 --
> userland() at 0x40643008
> user trace: trap %o7=3D0x10fe00
> pc 0x40643008, sp 0x7fdffffc3d1
> pc 0x106e6c, sp 0x7fdffffc491
> pc 0x1067d0, sp 0x7fdffffc561
> pc 0x107110, sp 0x7fdffffc621
> pc 0x10a3b4, sp 0x7fdffffc711
> pc 0x109c78, sp 0x7fdffffc8a1
> Dumping 512 MB (1 chunks)
>   chunk at 0: 536870912 bytes panic: trap: fast data access mmu miss
> cpuid =3D 0
> KDB: enter: panic
> [thread 100195]
> Stopped at      kdb_enter+0x38: ta              %xcc, 1
> db>

Happened again..

Kris

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