From 0a736109c9d29de0c26567e42cb99b27861aa8ba Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Mon, 12 Jan 2026 15:49:15 +0800 Subject: [PATCH] f2fs: fix to do sanity check on node footer in __write_node_folio() Add node footer sanity check during node folio's writeback, if sanity check fails, let's shutdown filesystem to avoid looping to redirty and writeback in .writepages. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/node.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 00587e783b44..30e26b878af0 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1763,7 +1763,11 @@ static bool __write_node_folio(struct folio *folio, bool atomic, bool *submitted /* get old block addr of this node page */ nid = nid_of_node(folio); - f2fs_bug_on(sbi, folio->index != nid); + + if (sanity_check_node_footer(sbi, folio, nid, NODE_TYPE_REGULAR)) { + f2fs_handle_critical_error(sbi, STOP_CP_REASON_CORRUPTED_NID); + goto redirty_out; + } if (f2fs_get_node_info(sbi, nid, &ni, !do_balance)) goto redirty_out; -- 2.47.3