From: liujinbao1 <[email protected]>

During SPO tests, when mounting F2FS, an -EINVAL error was returned.
The issue originates from the f2fs_recover_inode_page function's
check, where old_ni.blk_addr != NULL_ADDR under the conditions of
IS_INODE(folio) && is_dent_dnode(folio).
Add detection and repair for this scenario in fsck.

Signed-off-by: Sheng Yong <[email protected]>
Signed-off-by: Yongpeng Yang <[email protected]>
Signed-off-by: Jinbao Liu <[email protected]>
---
 fsck/mount.c | 24 ++++++++++++++++++++++++
 fsck/node.h  | 14 ++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/fsck/mount.c b/fsck/mount.c
index f03fa2d..07b8e6e 100644
--- a/fsck/mount.c
+++ b/fsck/mount.c
@@ -3881,6 +3881,7 @@ int f2fs_find_fsync_inode(struct f2fs_sb_info *sbi, 
struct list_head *head)
 
        while (1) {
                struct fsync_inode_entry *entry;
+               struct f2fs_nat_entry nat_entry;
 
                if (!f2fs_is_valid_blkaddr(sbi, blkaddr, META_POR))
                        break;
@@ -3897,6 +3898,29 @@ int f2fs_find_fsync_inode(struct f2fs_sb_info *sbi, 
struct list_head *head)
 
                entry = get_fsync_inode(head, ino_of_node(node_blk));
                if (!entry) {
+                       if (IS_INODE(node_blk) && is_dent_dnode(node_blk)) {
+                               get_nat_entry(sbi, ino_of_node(node_blk), 
&nat_entry);
+                               if (nat_entry.block_addr != NULL_ADDR) {
+                                       if (!c.fix_on)
+                                               ASSERT_MSG("ino: %u is_dent:%d 
nat entry blkaddr is %#X\n",
+                                                       ino_of_node(node_blk), 
is_dent_dnode(node_blk),
+                                                       nat_entry.block_addr);
+                                       else if (f2fs_dev_is_writable()) {
+                                               int ret = 0;
+
+                                               ASSERT_MSG("Set node_blk %#x 
fsync flag [%u] -> [0]"
+                                                       " next_blkaddr [%#x] -> 
[NULL_ADDR]\n",
+                                                       blkaddr, 
is_fsync_dnode(node_blk),
+                                                       
F2FS_NODE_FOOTER(node_blk)->next_blkaddr);
+                                               
F2FS_NODE_FOOTER(node_blk)->next_blkaddr = NULL_ADDR;
+                                               set_fsync_mark(node_blk, 0);
+                                               ret = dev_write_block(node_blk, 
blkaddr,
+                                                       
f2fs_io_type_to_rw_hint(CURSEG_WARM_NODE));
+                                               ASSERT(ret >= 0);
+                                               goto next;
+                                       }
+                               }
+                       }
                        entry = add_fsync_inode(head, ino_of_node(node_blk));
                        if (!entry) {
                                err = -1;
diff --git a/fsck/node.h b/fsck/node.h
index 19f1e57..7c16cc8 100644
--- a/fsck/node.h
+++ b/fsck/node.h
@@ -173,6 +173,20 @@ static inline void set_cold_node(struct f2fs_node *rn, 
bool is_dir)
        F2FS_NODE_FOOTER(rn)->flag = cpu_to_le32(flag);
 }
 
+static inline void set_mark(struct f2fs_node *rn, int mark, int type)
+{
+       unsigned int flag = le32_to_cpu(F2FS_NODE_FOOTER(rn)->flag);
+
+       if (mark)
+               flag |= (1 << type);
+       else
+               flag &= ~(1 << type);
+       F2FS_NODE_FOOTER(rn)->flag = cpu_to_le32(flag);
+}
+
+#define set_dentry_mark(page, mark)    set_mark(page, mark, DENT_BIT_SHIFT)
+#define set_fsync_mark(page, mark)     set_mark(page, mark, FSYNC_BIT_SHIFT)
+
 #define is_fsync_dnode(node_blk)       is_node(node_blk, FSYNC_BIT_SHIFT)
 #define is_dent_dnode(node_blk)                is_node(node_blk, 
DENT_BIT_SHIFT)
 
-- 
2.25.1



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