Re: NULL pointer dereference in ext4_ext_remove_space on 3.5.1

Christoph Hellwig
2012-08-17T17:49:06Z

On Fri, Aug 17, 2012 at 09:15:58AM -0400, Theodore Ts'o wrote:
> Thanks Fengguang:
>
> For the record, I was able to find my own easy repro, last night using
> only a 220 meg partition:
>
> # mke2fs -t ext4 -b 1024 -J size=1 /dev/vdc
> # mount -t ext2 /dev/vdc /vdc
> # mkdir /vdc/a
> # cd /vdc/a
> # seq 1 210000 | xargs -n 1 fallocate -l 1m
> # seq 1 2 210000 | xargs /bin/rm
> # mkdir /vdc/b
> # cd /vdc/b
> # seq 1 103 | xargs -n 1 fallocate -l 1g
> # cd /
> # umount /vdc
> # mount -t ext4 -o commit=10000 /dev/vdc /vdc
> # rm -rf /vdc/b

Can you submit this for xfstests?