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SubjectRe: 2.6.17-mm1: UML failing w/o SKAS enabled
On Sat, Jun 24, 2006 at 10:00:01AM -0400, Theodore Tso wrote:
> 32% ./linux
> Checking that ptrace can change system call numbers...OK
> Checking syscall emulation patch for ptrace...OK
> Checking advanced syscall emulation patch for ptrace...OK
> Checking for tmpfs mount on /dev/shm...OK
> Checking PROT_EXEC mmap in /dev/shm/...OK
> Checking for the skas3 patch in the host:
> - /proc/mm...not found
> - PTRACE_FAULTINFO...not found
> - PTRACE_LDT...not found
> UML running in SKAS0 mode
> Checking that ptrace can change system call numbers...OK
> Checking syscall emulation patch for ptrace...OK
> Checking advanced syscall emulation patch for ptrace...OK
>
> <tytso@candygram> {/usr/projects/uml/linux-2.6.17-mm1}
> 33%
>
> Looks like UML just crashed (tm), without any explanation. Kconfig
> attached. Suggestions on how to debug this would be appreciated.

I'm working on this - the genirq stuff in -mm broke UML. Add stderr=1
to the command line to see the actual crash. 2.6.17 is fine, except
you need a klibc patch for O= builds.

Jeff
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