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/openbmc/linux/fs/btrfs/ |
H A D | ioctl.c | 325c50e3 Wed Sep 21 07:31:29 CDT 2016 Jeff Mahoney <jeffm@suse.com> btrfs: ensure that file descriptor used with subvol ioctls is a dir
If the subvol/snapshot create/destroy ioctls are passed a regular file with execute permissions set, we'll eventually Oops while trying to do inode->i_op->lookup via lookup_one_len.
This patch ensures that the file descriptor refers to a directory.
Fixes: cb8e70901d (Btrfs: Fix subvolume creation locking rules) Fixes: 76dda93c6a (Btrfs: add snapshot/subvolume destroy ioctl) Cc: <stable@vger.kernel.org> #v2.6.29+ Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Chris Mason <clm@fb.com>
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