Some callers (usually error paths) call bdevname with null bdev. Signed-off-by: Dmitry Monakhov <dmonak...@openvz.org> --- block/partition-generic.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/block/partition-generic.c b/block/partition-generic.c index 7afb990..284de18 100644 --- a/block/partition-generic.c +++ b/block/partition-generic.c @@ -46,6 +46,8 @@ char *disk_name(struct gendisk *hd, int partno, char *buf) const char *bdevname(struct block_device *bdev, char *buf) { + if (unlikely(!bdev)) + return snprintf(buf, BDEVNAME_SIZE, "unknown-block(null)"); return disk_name(bdev->bd_disk, bdev->bd_part->partno, buf); } -- 2.9.3