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f2fs: fix to unlock page correctly in error path of is_alive()

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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@duo.ucw.cz/

Fixes: 77900c45ee5c ("f2fs: fix to do sanity check in is_alive()")
Cc: <stable@vger.kernel.org>
Reported-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chao Yu 2022-02-04 11:21:14 +08:00 • committed by Greg Kroah-Hartman
commit 947ca26390
1 changed files with 3 additions and 1 deletions
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4
fs/f2fs/gc.c
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@ -633,8 +633,10 @@ static bool is_alive(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
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 = datablock_addr(NULL, node_page, ofs_in_node);