Re: Segfaults as non-root user
Wiping out my zshrc fixed the ls bug, however, the dpkg-buildpkg error
still remains. In dmesg:
dpkg-parsechang[19135]: segfault at 00000000000000f0 rip 00002aaaab7922bb rsp 00007fffffde93d0 error 4
-John
On Tue, Sep 20, 2005 at 10:13:25AM -0700, John C. McCullough wrote:
> I recently installed the amd64 port onto an intel EM64t SMP machine. I
> am running the 2.6.12.6 kernel. The same issue occurs using the
> debian-packaged 2.6.11-em64t-p4-smp kernel. I cannot test on the 2.6.13
> kernel due to a driver issue in the raid controler.
>
> The system was installed using a slightly modified unstable cd image and
> then packages from the testing branch were installed. The raid board on
> the machine is not supported until the 2.6.11 kernel and I was having
> difficulty getting a kernel satisfying that onto a testing installation
> cd.
>
> So far, I have found a few programs that segfault, particularly zsh and
> dpkg-buildpkg when run as a non-root user. They behave normally when
> run as root.
>
> In zsh the problem appears as:
> ~ % cd /tmp/test
> /tmp/test % ls -la
> /tmp/test
> total 12
> drwx--x--x 3 john john 4096 2005-09-20 09:55 .
> drwxrwxrwt 7 root root 4096 2005-09-20 09:54 ..
> drwx-----x 3 john john 4096 2005-09-20 09:55 pkgs
> /tmp/test %
>
> /tmp/test % cd pkgs
> /tmp/test/pkgs % ls
> zsh: 4707 segmentation fault ls
> /tmp/test/pkgs %
>
> And any attempts to execute commands elsewhere results in a segmentation
> fault. However, if the full path is used, the segfault does not occur:
>
> ~ % cd /tmp/test/pkgs
> /tmp/test/pkgs % ls -la
> total 6516
> drwx-----x 3 john john 4096 2005-09-20 09:55 .
> drwx--x--x 3 john john 4096 2005-09-20 09:55 ..
> drwx--x--x 18 john john 4096 2005-09-20 09:54 zsh-4.2.5
> -rw------- 1 john john 1468 2005-09-20 09:54 zsh_4.2.5-19_amd64.changes
> -rw------- 1 john john 2119662 2005-09-20 09:54 zsh_4.2.5-19_amd64.deb
> -rw------- 1 john john 338405 2005-09-20 09:54 zsh_4.2.5-19.diff.gz
> -rw------- 1 john john 675 2005-09-20 09:54 zsh_4.2.5-19.dsc
> -rw------- 1 john john 2624122 2005-09-20 09:54 zsh_4.2.5.orig.tar.gz
> -rw------- 1 john john 672170 2005-09-20 09:54 zsh-doc_4.2.5-19_all.deb
> -rw------- 1 john john 865214 2005-09-20 09:54 zsh-static_4.2.5-19_amd64.deb
> /tmp/test/pkgs %
>
> This only seems to occur in specific directories, though I have not yet
> determined whath distinguishes them from others (/usr/local/bin is fine though
> /usr/local/lib/site_perl isn't).
>
> The problem is not limited to zsh, though I haven't done a complete test
> of all programs for example (running from tcsh):
> /tmp/test/pkgs/zsh-4.2.5 > dpkg-buildpackage
> dpkg-parsechangelog: failure: tail of debian/changelog died from signal 11
> dpkg-buildpackage: unable to determine source package is
>
> Running as root, or through sudo, is sucessful. The same with zsh and
> the change directory issue.
>
> Has anyone experienced this before who can offer some help?
>
> The likely course of action for me is to go back to the 32-bit debian or
> to try another 64bit distribution. However, I am willing to try to
> diagnose this for a little while.
>
> Thanks,
> John
>
>
> --
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