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| author | Ilya Dryomov <idryomov@gmail.com> | 2011-11-08 19:15:05 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2011-11-09 22:53:38 +0200 |
| commit | f23c8af8ca2789eeb0ab9ea90c214f9694d96cc5 (patch) | |
| tree | e1acd02447bc510609f14372d4aa4c1349ed6000 | |
| parent | a90e8b6fb80db43b029e1e76205452afa8bdc77a (diff) | |
| download | linux-x86-syscalls-f23c8af8ca2789eeb0ab9ea90c214f9694d96cc5.tar.gz | |
Btrfs: fix subvol_name leak on error in btrfs_mount()
btrfs_parse_early_options() can fail due to error while scanning devices
(-o device= option), but still strdup() subvol_name string:
mount -o subvol=SUBV,device=BAD_DEVICE <dev> <mnt>
So free subvol_name string on error.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| -rw-r--r-- | fs/btrfs/super.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 6befcaf253bd7e..58e9492230ce82 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -905,8 +905,10 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags, error = btrfs_parse_early_options(data, mode, fs_type, &subvol_name, &subvol_objectid, &subvol_rootid, &fs_devices); - if (error) + if (error) { + kfree(subvol_name); return ERR_PTR(error); + } if (subvol_name) { root = mount_subvol(subvol_name, flags, device_name, data); |