fs/ext2: Fix NULL dereference when fs_stat queries root.
When fs_stat() queries the root / mountpoint it should return its root
i_node but instead it tries to return the parent i_node which does not
exist. Fix this by checking if parent is set otherwise return the root
i_node.
Fixes https://github.com/zephyrproject-rtos/zephyr/issues/94000.
Signed-off-by: Bas van Loon <bas@arch-embedded.com>
(cherry picked from commit 1dcf123e2de81081cf1eced0647db08ad73c4b91)
diff --git a/subsys/fs/ext2/ext2_ops.c b/subsys/fs/ext2/ext2_ops.c
index 509a1c1..445cb37 100644
--- a/subsys/fs/ext2/ext2_ops.c
+++ b/subsys/fs/ext2/ext2_ops.c
@@ -598,12 +598,11 @@
}
uint32_t offset = args.offset;
- struct ext2_inode *parent = args.parent;
- struct ext2_file dir = {.f_inode = parent, .f_off = offset};
+ struct ext2_file dir = {.f_inode = args.parent ? args.parent : args.inode, .f_off = offset};
rc = ext2_get_direntry(&dir, entry);
- ext2_inode_drop(parent);
+ ext2_inode_drop(args.parent);
ext2_inode_drop(args.inode);
return rc;
}
