Re: possible ext4 race situation freezing linux

Theodore Tso wrote:

On Wed, Feb 25, 2009 at 01:22:22AM +1300, Andreas Friedrich Berendsen wrote:

quoted

Kernel version: 2.26.28.7
efs2progs version: 1.41.4
arch: x86_64 (amd)

I made this test four times and the results  were the same: linux
freezes and becomes unresponsive. Only solution is to reset the box. I
do not know if the problem is with the USB devices sub-subsystem or a
possible ext4 race condition.

Can you use alt-sysrq to get some stack traces or a register dump out,
so we can see where the kernel is hanging?

      	      	    	       	  - Ted

alt-sysrq-w would be a good place to start (just in case you're not
familiar w/ the sysrq keys)

It'd also be great to test w/ 2.6.29, as a deadlock was fixed there
recently (it's on its way to .28.x too AFAIK)

Thanks,

-Eric