linux-kernel - Re: [syzbot] [hfs?] KMSAN: uninit-value in hfsplus_cat_case_cmp

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Date: Wed, 27 Dec 2023 20:57:38 -0800
From: syzbot <syzbot+50d8672fea106e5387bb@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] [hfs?] KMSAN: uninit-value in hfsplus_cat_case_cmp_key

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Subject: [hfs?] KMSAN: uninit-value in hfsplus_cat_case_cmp_key
Author: lizhi.xu@...driver.com

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git fbafc3e621c3


diff --git a/fs/hfsplus/bfind.c b/fs/hfsplus/bfind.c
index ca2ba8c9f82e..6773f6d2508f 100644
--- a/fs/hfsplus/bfind.c
+++ b/fs/hfsplus/bfind.c
@@ -23,6 +23,7 @@ int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd)
 		return -ENOMEM;
 	fd->search_key = ptr;
 	fd->key = ptr + tree->max_key_len + 2;
+	fd->key->cat.parent = 0;
 	hfs_dbg(BNODE_REFS, "find_init: %d (%p)\n",
 		tree->cnid, __builtin_return_address(0));
 	switch (tree->cnid) {