From: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Date: Mon, 13 Jan 2025 19:31:44 +0000 (+0100)
Subject: btrfs: assert RAID stripe-extent length is always greater than 0
X-Git-Tag: v6.14-rc1~207^2~11
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a0e38eab76991562e0754a93c2c4160819efb03;p=thirdparty%2Fkernel%2Fstable.git

btrfs: assert RAID stripe-extent length is always greater than 0

When modifying a RAID stripe-extent, ASSERT() that the length of the new
RAID stripe-extent is always greater than 0.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/raid-stripe-tree.c b/fs/btrfs/raid-stripe-tree.c
index be923144cc85a..0c351eda3551e 100644
--- a/fs/btrfs/raid-stripe-tree.c
+++ b/fs/btrfs/raid-stripe-tree.c
@@ -28,6 +28,7 @@ static void btrfs_partially_delete_raid_extent(struct btrfs_trans_handle *trans,
 		.offset = newlen,
 	};
 
+	ASSERT(newlen > 0);
 	ASSERT(oldkey->type == BTRFS_RAID_STRIPE_KEY);
 
 	leaf = path->nodes[0];