kernel panic with sshfs (FUSE)
Simon Barner
barner at FreeBSD.org
Fri Nov 25 13:57:47 GMT 2005
Thiago Damas wrote:
> I experimented a kernel panic, when trying to create a md device
> using a file located in a sshfs (FUSE) filesystem;
> # pkg_info | grep fuse
> fusefs-kmod-0.2.19.6 Kernel module for fuse
> fusefs-libs-2.4.1 FUSE allows filesystem implementation in userspace
> fusefs-sshfs-1.3_1 Mount remote directories over ssh
>
> # uname -a
> FreeBSD noc2.interno 6.0-RELEASE FreeBSD 6.0-RELEASE #3: Thu Nov 10
> 21:07:03 BRST 2005
> root at noc2.interno:/usr/src/sys/i386/compile/NOC2 i386
>
> Unfortunately, I havent DEBUG flags turned ON in this kernel, but
> its easy to reproduce:
> # mount
> ...
> /dev/fuse0 on /mnt/sshfs (fusefs, local, synchronous)
>
> # cd /mnt/sshfs
> # mdconfig -a -f somefile.img
> <KERNEL PANICS WHERE>
>
> Maybe will be necessary to introduce some code in the fusefs module
> to deny this operation, IMHO.
Maybe the author of the FUSE kernel module wants to have a look at this
(Cc'ed).
--
Best regards / Viele Grüße, barner at FreeBSD.org
Simon Barner barner at gmx.de
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