Re: [patch] 'coredump crash' fixed

Brian Gerst (bgerst@quark.vpplus.com)
Wed, 27 Jan 1999 12:14:15 -0500

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MOLNAR Ingo wrote:
> The reason why we crash and why it made the kernel
> reboot in such a nasty way was that munmap() did just a tad more work than
> necessary and we zapped 0xc0000000's page table entry ... that is a pretty
> vital piece of 4M virtual space on Linux ;) (erm, just dont ask me how i
> managed to debug this ;)

Which then unmapped the interrupt descriptor table, so the next
interrupt causes a triple-fault and resets the cpu. Don't you just love
off-by-one errors?

Brian Gerst

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Next message: Brian Schau: "2.2.0: No isdn problems but delay when using ls/tar ..."
Previous message: Stephen C. Tweedie: "Re: Linux-2.2.0 bad VM behaviour "dd if=/dev/zero of=/dev/hdc bs=256k""
Maybe in reply to: MOLNAR Ingo: "[patch] 'coredump crash' fixed"