On Mon, Apr 23, 2018 at 05:32:04PM +0800, Qu Wenruo wrote:
> Commit 581c1760415c ("btrfs: Validate child tree block's level and first
> key") introduced new @first_key parameter for read_tree_block(), however
> caller in replace_path() is parasing wrong key to read_tree_block().
>
> It should use parameter @first_key other than @key.
>
> Normally it won't expose problem as @key is normally initialzied to the
> same value of @first_key we expect.
> However in relocation recovery case, @key can be set to (0, 0, 0), and
> since no valid key in relocation tree can be (0, 0, 0), it will cause
> read_tree_block() to return -EUCLEAN and interrupt relocation recovery.
>
> Fix it by setting @first_key correctly.
>
> Signed-off-by: Qu Wenruo <w...@suse.com>
Added to next, thanks.
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