Hello Yuri,
Yuri Chislov:
> I have sometimes errors on del branch or umount operations.
> The system used as file server with snapshots.
>
> Used kernel: 2.6.27.10
> aufs: 20081208 (from CVS, used local.mk )
>
> /sys/fs/aufs/config
> CONFIG_AUFS=m
> CONFIG_AUFS_BRANCH_MAX_127=y
> CONFIG_AUFS_RR_SQUASHFS=y
> CONFIG_AUFS_DEBUG=y
>
> Error messages:
> Jan 11 00:02:01 filer kernel: BUG: unable to handle kernel NULL pointer
> dereference at 00000000
> Jan 11 00:02:01 filer kernel: IP: [<f8b0b599>] :aufs:cpup_entry+0x489/0x650
> Jan 11 00:02:01 filer kernel: *pde = 00000000
> Jan 11 00:02:01 filer kernel: Oops: 0000 [#1] SMP
> Jan 11 00:02:01 filer kernel: Modules linked in: af_packet aufs binfmt_misc
> dm_mod ehci_hcd uhci_hcd e1000e sg sr_mod cdrom evdev usbcore unix
> Jan 11 00:02:01 filer kernel:
> Jan 11 00:02:01 filer kernel: Pid: 4082, comm: chown Not tainted (2.6.27.10-1
> #1)
:::
Your command is "chown -n /aufs/something", isn't it?
Which is filesystem of your branch?
Could you reproduce the problem simply?
J. R. Okajima
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