Bug#434752: Kernel hangs when I echo 0 > /proc/sys/vm/vdso_enabled

[Loïc Minier <lool@dooz.org>]

Package: linux-2.6
Version: 2.6.22-2
Severity: normal

        Hi,

 Summary: echo 0 > /proc/sys/vm/vdso_enabled hangs my kernel.

 Since some months, I get unusable backtraces from gdb; I was pointed at
 an OpenSuse bug at:
    <https://bugzilla.novell.com/show_bug.cgi?id=258433>
 which suggests disabling VDSO.  My value of /proc/sys/vm/vdso_enabled
 is 2 before I try, and the system hangs shortly after I echo 0 in that
 tunable.

 The important issue I'd like to see fixed is this backtrace issue, but
 I'm reporting this crash as I think the kernel shouldn't crash and
 because I'm using this tunable to diagnose the backtrace issue.

 I'll use a kernel command line parameter in the mean time.

   Bye,

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.22-1-686 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

-- 
Loïc Minier