linux-kernel - [PATCH v3 03/14] btrfs: assert RAID stripe-extent length is always greater than 0

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Message-Id: <20250109-rst-delete-fixes-v3-3-b5c73a4b2a80@kernel.org>
Date: Thu, 09 Jan 2025 16:15:04 +0100
From: Johannes Thumshirn <jth@...nel.org>
To: Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>, 
 David Sterba <dsterba@...e.com>
Cc: Filipe Manana <fdmanana@...e.com>, linux-btrfs@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Johannes Thumshirn <johannes.thumshirn@....com>
Subject: [PATCH v3 03/14] btrfs: assert RAID stripe-extent length is always
 greater than 0

From: Johannes Thumshirn <johannes.thumshirn@....com>

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

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@....com>
Reviewed-by: Filipe Manana <fdmanana@...e.com>
---
 fs/btrfs/raid-stripe-tree.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/btrfs/raid-stripe-tree.c b/fs/btrfs/raid-stripe-tree.c
index be923144cc85a0ecb370dbb1ebeea44269a1f4ad..0c351eda3551efec67c35d76d06e648da5f33c71 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];

-- 
2.43.0