diff options
| author | Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> | 2014-05-22 22:43:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-30 20:01:33 -0700 |
| commit | 8f1dd63b01d0ab74032c77cad7a664da8a59dc2c (patch) | |
| tree | 90303e204d4095861217a5c7f8a3fc37d31c7733 | |
| parent | a25ebe211246ea835f165c371d744f2d65260d64 (diff) | |
fs: btrfs: volumes.c: Fix for possible null pointer dereference
commit 8321cf2596d283821acc466377c2b85bcd3422b7 upstream.
There is otherwise a risk of a possible null pointer dereference.
Was largely found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/btrfs/volumes.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 06744f1e91f..d5dc63c6bb7 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1446,11 +1446,12 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path) struct btrfs_fs_devices *fs_devices; fs_devices = root->fs_info->fs_devices; while (fs_devices) { - if (fs_devices->seed == cur_devices) + if (fs_devices->seed == cur_devices) { + fs_devices->seed = cur_devices->seed; break; + } fs_devices = fs_devices->seed; } - fs_devices->seed = cur_devices->seed; cur_devices->seed = NULL; lock_chunks(root); __btrfs_close_devices(cur_devices); |