Btrfs: fix NULL pointer crash of deleting a seed device
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 <lists@colorremedies.com> Reported-by: Chris Murphy <lists@colorremedies.com> Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <clm@fb.com>
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@ -6146,10 +6146,14 @@ void btrfs_init_devices_late(struct btrfs_fs_info *fs_info)
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struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
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struct btrfs_device *device;
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mutex_lock(&fs_devices->device_list_mutex);
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list_for_each_entry(device, &fs_devices->devices, dev_list)
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device->dev_root = fs_info->dev_root;
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mutex_unlock(&fs_devices->device_list_mutex);
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while (fs_devices) {
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mutex_lock(&fs_devices->device_list_mutex);
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list_for_each_entry(device, &fs_devices->devices, dev_list)
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device->dev_root = fs_info->dev_root;
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mutex_unlock(&fs_devices->device_list_mutex);
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fs_devices = fs_devices->seed;
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}
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}
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static void __btrfs_reset_dev_stats(struct btrfs_device *dev)
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