btrfs: fix iteration of extrefs during log replay

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[ Upstream commit 54a7081ed1 ]

At __inode_add_ref() when processing extrefs, if we jump into the next
label we have an undefined value of victim_name.len, since we haven't
initialized it before we did the goto. This results in an invalid memory
access in the next iteration of the loop since victim_name.len was not
initialized to the length of the name of the current extref.

Fix this by initializing victim_name.len with the current extref's name
length.

Fixes: e43eec81c5 ("btrfs: use struct qstr instead of name and namelen pairs")
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Filipe Manana 2025-06-23 12:11:58 +01:00 • committed by Greg Kroah-Hartman

parent e4c3176ace

commit 7ac790dc2b

1 changed files with 2 additions and 2 deletions

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fs/btrfs/tree-log.c

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