[BUG]
Since commit "btrfs-progs: disk-io: Flush to ensure super block write is
FUA" mkfs-tests/017 will fail like:
====== RUN MUSTFAIL /home/adam/btrfs-progs/mkfs.btrfs -K -f
/dev/mapper/btrfs-progs-thin-vol
ERROR: failed to write super block for devid 1: flush error: Input/output
error
disk-io.c:1810: write_all_supers: BUG_ON `ret` triggered, value -5
/home/adam/btrfs-progs/mkfs.btrfs(+0x1e5c1)[0x557a2c83e5c1]
/home/adam/btrfs-progs/mkfs.btrfs(+0x1e65f)[0x557a2c83e65f]
/home/adam/btrfs-progs/mkfs.btrfs(write_all_supers+0x1ce)[0x557a2c843a8a]
/home/adam/btrfs-progs/mkfs.btrfs(write_ctree_super+0x12d)[0x557a2c843be2]
/home/adam/btrfs-progs/mkfs.btrfs(btrfs_commit_transaction+0x250)[0x557a2c887c56]
/home/adam/btrfs-progs/mkfs.btrfs(+0xc0b1)[0x557a2c82c0b1]
/home/adam/btrfs-progs/mkfs.btrfs(main+0x1049)[0x557a2c82e929]
/usr/lib/libc.so.6(__libc_start_main+0xf3)[0x7f6689e99223]
/home/adam/btrfs-progs/mkfs.btrfs(_start+0x2e)[0x557a2c82b86e]
failed (expected): /home/adam/btrfs-progs/mkfs.btrfs -K -f
/dev/mapper/btrfs-progs-thin-vol
[CAUSE]
Just one BUG_ON() in write_all_supers().
[FIX]
Just remove the BUG_ON(). Callers of write_all_supers() are already
checking the return value.
Signed-off-by: Qu Wenruo <w...@suse.com>
---
disk-io.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/disk-io.c b/disk-io.c
index 10550151c5bb..3517de3d8672 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -1807,7 +1807,8 @@ int write_all_supers(struct btrfs_fs_info *fs_info)
btrfs_set_super_flags(sb, flags | BTRFS_HEADER_FLAG_WRITTEN);
ret = write_dev_supers(fs_info, sb, dev);
- BUG_ON(ret);
+ if (ret < 0)
+ return ret;
}
return 0;
}
--
2.21.0
