[PATCH] jffs2: initialize datacrc for inode/dirent entries built from scan

jffs2_1pass_build_lists() initializes inode and dirent list entries from
raw node scanning, but leaves b->datacrc uninitialized in both paths.

Later, jffs2_1pass_read_inode() uses b->datacrc to decide whether to
compute and validate the node data CRC, or to discard the entry as
CRC_BAD. With an undefined value, behavior is non-deterministic:
entries may be incorrectly dropped or CRC verification may be skipped.

Initialize b->datacrc to CRC_UNKNOWN for inode and dirent entries created
in jffs2_1pass_build_lists(), matching the summary-based path behavior.

Signed-off-by: Wagner Popov dos Santos <[email protected]>
---
 fs/jffs2/jffs2_1pass.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/jffs2/jffs2_1pass.c b/fs/jffs2/jffs2_1pass.c
index 137a9585b0b..eb0554f466f 100644
--- a/fs/jffs2/jffs2_1pass.c
+++ b/fs/jffs2/jffs2_1pass.c
@@ -1726,6 +1726,7 @@ jffs2_1pass_build_lists(struct part_info * part)
 				b->offset = (u32)part->offset + ofs;
 				b->version = node->i.version;
 				b->ino = node->i.ino;
+				b->datacrc = CRC_UNKNOWN;
 				if (max_totlen < node->u.totlen)
 					max_totlen = node->u.totlen;
 				break;
@@ -1764,6 +1765,7 @@ jffs2_1pass_build_lists(struct part_info * part)
 				b->offset = (u32)part->offset + ofs;
 				b->version = node->d.version;
 				b->pino = node->d.pino;
+				b->datacrc = CRC_UNKNOWN;
 				if (max_totlen < node->u.totlen)
 					max_totlen = node->u.totlen;
 				counterN++;
-- 
2.43.0