From: Petr Vandrovec <vandrove@vc.cvut.cz>
To: William Lee Irwin III <wli@holomorphy.com>, linux-kernel@vger.kernel.org
Subject: Re: Use-after-free in pte_chain in 2.6.0-test11
Date: Sat, 13 Dec 2003 23:32:08 +0100 [thread overview]
Message-ID: <20031213223208.GB25959@vana.vc.cvut.cz> (raw)
In-Reply-To: <20031213221320.GT8039@holomorphy.com>
On Sat, Dec 13, 2003 at 02:13:20PM -0800, William Lee Irwin III wrote:
> On Sat, Dec 13, 2003 at 11:04:59PM +0100, Petr Vandrovec wrote:
> > today I get this one while attempting to build new kernel. Running kernel is
> > 2.6.0-test11-c1511 (bk as of 2003-12-05 23:35:35-08:00). Does anybody
> > have any clue what could happen, or should I start looking for a new
> > memory modules?
> > AMD K7/1GHz box, 512MB RAM, no vmmon/vmnet loaded since reboot, gcc-3.3.2
> > as of last week Debian unstable. Kernel built with all possible memory
> > debugging enabled...
> > Unfortunately I have no idea which process did this clone() call, and
> > whether it succeeded or died.
>
> CONFIG_DEBUG_PAGEALLOC should have oopsed this...
Maybe pte_chain is too small to get unmapped (it is 128 bytes here)? Or it is
really hardware bug :-(
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_STACKOVERFLOW=y
CONFIG_DEBUG_SLAB=y
CONFIG_DEBUG_IOVIRT=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_PAGEALLOC=y
CONFIG_DEBUG_HIGHMEM=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_SPINLOCK_SLEEP=y
# CONFIG_FRAME_POINTER is not set
CONFIG_X86_EXTRA_IRQS=y
CONFIG_X86_FIND_SMP_CONFIG=y
CONFIG_X86_MPPARSE=y
Thanks,
Petr Vandrovec
vandrove@vc.cvut.cz
next prev parent reply other threads:[~2003-12-13 22:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-13 22:04 Use-after-free in pte_chain in 2.6.0-test11 Petr Vandrovec
2003-12-13 22:13 ` William Lee Irwin III
2003-12-13 22:32 ` Petr Vandrovec [this message]
2003-12-13 22:33 ` William Lee Irwin III
2003-12-13 22:36 Manfred Spraul
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