Re: v3.10: unmount won't work

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On 5/14/13 2:12 PM, Toralf Förster wrote:
> At a stable 32 bit stable Gentoo with kernel v3.10-rc1-113-ga2c7a54 I cannot umount an (EXT4) fs
> which was created in a file located in a tmpfs partition and loop mounted  :
> 
> That file system was used to hold victims files shared via NFSv4 to an user mode linux 
> on which trinity was used to fuzz testing a patched UML guest kernel.
> 
> n22 ~ # mount
> ...
> nfsd on /proc/fs/nfsd type nfsd (rw,nodev,noexec,nosuid)
> /mnt/ramdisk/disk0 on /mnt/trinity type ext4 (rw)

Is your "mount" looking at /etc/mtab ot at /proc/mounts?

What does /proc/mounts say, does it contain this device or mountpoint?

> n22 ~ # umount /mnt/trinity
> umount: /mnt/trinity: not mounted

-Eric

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