solved!!! VDSO support, 2.6.20-1.2925 hangs after unmounting old proc and sys

[Dave Jones]

On Thu, Apr 12, 2007 at 05:49:05PM +0200, Daniel Kirsten wrote:
 > Hallo, 
 > 
 > we discussed the following problem in march
 > 
 > >my compiled  2.6.20-1.2925  kernel does not boot. 
 > >It hangs after unmounting the old proc and 
 > >sys filesystems. However, I can still use 
 > >Ctrl+Alt+Del to reboot. 
 > > 
 > >Maybe, the problem is related to Selinux. 
 > >
 > >My compiled kernels 2.6.19-1.2895 and 2.6.19-1.2911
 > >worked fine, and I did not change the kernel 
 > >configuration. 
 > > 
 > >The Fedora-kernels 2.6.19-1.2895, 2.6.19-1.2911 and 
 > >2.6.20-1.2925 also work. 
 > 
 > The same problem occured in 2.6.20-1.2933. 
 > However, in a needle-in-the-haystick search, I solved the 
 > problem by DISabeling the option 
 > 
 > Compat VDSO support (COMPAT_VDSO)

That should only be necessary if you're running an ancient glibc.
(FC1 era).  You can also boot with vdso=off in such situations.

	Dave

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