ext4: fix fencepost in s_first_meta_bg validation
authorTheodore Ts'o <tytso@mit.edu>
Wed, 15 Feb 2017 06:26:39 +0000 (01:26 -0500)
committerWilly Tarreau <w@1wt.eu>
Tue, 20 Jun 2017 06:02:36 +0000 (08:02 +0200)
commit77bd57e66e071d866323132e1250350d7c90159f
tree4d5721e904bc8ac7fc4e266fb12e68f1441ade1e
parent45f1a95e8e169b8fc67d77b603ed2615301626f3
ext4: fix fencepost in s_first_meta_bg validation

commit 2ba3e6e8afc9b6188b471f27cf2b5e3cf34e7af2 upstream.

It is OK for s_first_meta_bg to be equal to the number of block group
descriptor blocks.  (It rarely happens, but it shouldn't cause any
problems.)

https://bugzilla.kernel.org/show_bug.cgi?id=194567

Fixes: 3a4b77cd47bb837b8557595ec7425f281f2ca1fe
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Willy Tarreau <w@1wt.eu>
fs/ext4/super.c