Comment 40 for bug 1215513

I've tested 3.8.0-31-generic (linux-image-3.8.0-31-generic = 3.8.0-31.46~precise1). To the admins: when asking us to test "the latest in -proposed", please tell us which package and which version. It makes it easier to interpret the record in the future, when the "latest in proposed" may be different (or when your proposed solution has been removed / replaced)

I'm using the following test now:

echo '4096 * 4096' | bc -l > /sys/block/zram0/disksize
mkfs.ext2 /dev/zram0

And I get this with dmesg -T:

[Sun Sep 22 23:05:40 2013] Buffer I/O error on device zram0, logical block 4095
[Sun Sep 22 23:05:40 2013] lost page write due to I/O error on zram0
[Sun Sep 22 23:05:40 2013] Buffer I/O error on device zram0, logical block 4095

I don't think this is a good kernel. In the terminology of https://lkml.org/lkml/2013/8/13/22, both [1] and [2] should be in the kernel, so that both bug A and bug B are fixed.

I'll check how to find the changelog for a kernel and whether the other -proposed (3.2, 3.5) kernels also have the same problem.