Messages in this thread | ![/](/images/icornerl.gif) | | Date | Sat, 13 Dec 2003 23:32:08 +0100 | From | Petr Vandrovec <> | Subject | Re: Use-after-free in pte_chain in 2.6.0-test11 |
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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
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