3.11.10.14 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Liu Bo <bo.li....@oracle.com>
commit 29cc83f69c8338ff8fd1383c9be263d4bdf52d73 upstream.
Same as normal devices, seed devices should be initialized with
fs_info->dev_root as well, otherwise we'll get a NULL pointer crash.
Cc: Chris Murphy <li...@colorremedies.com>
Reported-by: Chris Murphy <li...@colorremedies.com>
Signed-off-by: Liu Bo <bo.li....@oracle.com>
Signed-off-by: Chris Mason <c...@fb.com>
Cc: David Sterba <dste...@suse.cz>
Signed-off-by: Luis Henriques <luis.henriq...@canonical.com>
---
fs/btrfs/volumes.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index cacdb3effa35..f79b027fa0f1 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5730,10 +5730,14 @@ void btrfs_init_devices_late(struct btrfs_fs_info
*fs_info)
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *device;
- mutex_lock(&fs_devices->device_list_mutex);
- list_for_each_entry(device, &fs_devices->devices, dev_list)
- device->dev_root = fs_info->dev_root;
- mutex_unlock(&fs_devices->device_list_mutex);
+ while (fs_devices) {
+ mutex_lock(&fs_devices->device_list_mutex);
+ list_for_each_entry(device, &fs_devices->devices, dev_list)
+ device->dev_root = fs_info->dev_root;
+ mutex_unlock(&fs_devices->device_list_mutex);
+
+ fs_devices = fs_devices->seed;
+ }
}
static void __btrfs_reset_dev_stats(struct btrfs_device *dev)
--
1.9.1
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