A device can be added to the device list without getting a name, so we may access to illegal addresses while opening devices with their name.
Signed-off-by: Liu Bo <bo.li....@oracle.com> --- volumes.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/volumes.c b/volumes.c index e7923ee..f9ac2af 100644 --- a/volumes.c +++ b/volumes.c @@ -186,6 +186,10 @@ int btrfs_open_devices(struct btrfs_fs_devices *fs_devices, int flags) list_for_each(cur, head) { device = list_entry(cur, struct btrfs_device, dev_list); + if (!device->name) { + printk("no name for device %llu, skip it now\n", device->devid); + continue; + } fd = open(device->name, flags); if (fd < 0) { -- 1.7.7 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html