Commit c847cb74 authored Jul 28, 2025 by Bas van Loon Committed by Anas Nashif Sep 13, 2025

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 1dcf123e)

parent cccd5048

subsys/fs/ext2/ext2_ops.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -596,12 +596,11 @@ static int ext2_stat(struct fs_mount_t mountp, const char path, struct fs_dire
		}

		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;
		}

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