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Re: Hi all - Kernel Opps on PowerPC


On Tue, Oct 09, 2001 at 06:22:32PM -0700, Paul White wrote:
> We recently switched to kernel 2.4.10 from kernel 2.4.4, and in doing
> so also added the EXT3 patch 2.4-0.9.10-2410.  
> Everything seems to work great, however I have been able to reproduce
> a crash over and over again.

ext3 on 2.4.10 is known to have problems --- far too much changed in
2.4.10's VFS internals.

> mke2fs -j /dev/hda2
> mount /dev/hda2 /mnt
> About 75% of the time, mount will result in a kernel Oops, the crash
> seems to be about something in journal_update_superblock()...

Almost certainly the 2.4.10 changes --- it's precisely the
relationship between buffer-cache operations such as mke2fs and fs
operations such as mount which has changed the most in 2.4.10.

We're doing primary testing for ext3 on 2.4.10-ac right now, rather
than the Linus tree, until we have a bit more confidence in the
Linus-tree ext3 interactions.  

But to be sure of what's happening here, you'll have to send us a
ksymoops parsing of the kernel message.


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