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SubjectRe: xattr hash error in 4.13-rc with overlayfs over ext4
On Mon, Jul 31, 2017 at 7:08 PM, Miklos Szeredi <> wrote:
> On Thu, Jul 27, 2017 at 10:54 PM, Tahsin Erdogan <> wrote:
>> Still no luck reproducing the error. I am using the test script below
>> at v4.13-rc2. Do you mind checking my script to see what I am missing?
> Don't know. I can reliably reproduce it under UML, but not with a
> VM. What the hell is going on?

Is it the same ext4 image for UML and VM? same image size? same mkfs version?

What inode size do you have in UML setup? e.g.:

dumpe2fs -h /dev/sda3|grep Inode.size
dumpe2fs 1.42.13 (17-May-2015)
Inode size: 256

have extra_isize feature? (not sure if that matters)

dumpe2fs -h /dev/sda3|grep isize
dumpe2fs 1.42.13 (17-May-2015)
Filesystem features: has_journal ext_attr resize_inode dir_index
filetype needs_recovery extent flex_bg sparse_super large_file
huge_file uninit_bg dir_nlink extra_isize
Required extra isize: 28
Desired extra isize: 28

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