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-rw-r--r--fs/f2fs/gc.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index fd400d148afb..3a820e5cdaee 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1078,7 +1078,7 @@ static bool is_alive(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
{
struct page *node_page;
nid_t nid;
- unsigned int ofs_in_node;
+ unsigned int ofs_in_node, max_addrs;
block_t source_blkaddr;
nid = le32_to_cpu(sum->nid);
@@ -1104,6 +1104,14 @@ static bool is_alive(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
return false;
}
+ max_addrs = IS_INODE(node_page) ? DEF_ADDRS_PER_INODE :
+ DEF_ADDRS_PER_BLOCK;
+ if (ofs_in_node >= max_addrs) {
+ f2fs_err(sbi, "Inconsistent ofs_in_node:%u in summary, ino:%u, nid:%u, max:%u",
+ ofs_in_node, dni->ino, dni->nid, max_addrs);
+ return false;
+ }
+
*nofs = ofs_of_node(node_page);
source_blkaddr = data_blkaddr(NULL, node_page, ofs_in_node);
f2fs_put_page(node_page, 1);