linux-kernel - [PATCH v2 02/14] btrfs: assert RAID stripe-extent length is always greater than 0

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Message-Id: <20250107-rst-delete-fixes-v2-2-0c7b14c0aac2@kernel.org>
Date: Tue, 07 Jan 2025 13:47:32 +0100
From: Johannes Thumshirn <jth@...nel.org>
To: Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>, 
 David Sterba <dsterba@...e.com>
Cc: linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Filipe Manana <fdmanana@...e.com>, 
 Johannes Thumshirn <johannes.thumshirn@....com>
Subject: [PATCH v2 02/14] 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 757e9c681f6c49f2d0295c1b3b2de56aad3c94a6..5c6224ed3eda53a11a41bffdf6c789fbd6d3a503 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