From: Chao Yu <chao@xxxxxxxxxx> commit 6d18762ed5cd549fde74fd0e05d4d87bac5a3beb upstream. As Pavel Machek reported in below link [1]: After commit 77900c45ee5c ("f2fs: fix to do sanity check in is_alive()"), node page should be unlock via calling f2fs_put_page() in the error path of is_alive(), otherwise, f2fs may hang when it tries to lock the node page, fix it. [1] https://lore.kernel.org/stable/20220124203637.GA19321@xxxxxxxxxx/ Fixes: 77900c45ee5c ("f2fs: fix to do sanity check in is_alive()") Cc: <stable@xxxxxxxxxxxxxxx> Reported-by: Pavel Machek <pavel@xxxxxxx> Signed-off-by: Pavel Machek <pavel@xxxxxxx> Signed-off-by: Chao Yu <chao@xxxxxxxxxx> Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/f2fs/gc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -1038,8 +1038,10 @@ static bool is_alive(struct f2fs_sb_info set_sbi_flag(sbi, SBI_NEED_FSCK); } - if (f2fs_check_nid_range(sbi, dni->ino)) + if (f2fs_check_nid_range(sbi, dni->ino)) { + f2fs_put_page(node_page, 1); return false; + } *nofs = ofs_of_node(node_page); source_blkaddr = data_blkaddr(NULL, node_page, ofs_in_node);