From f9417fcfca3c5e30a0b961e7250fab92cfa5d123 Mon Sep 17 00:00:00 2001 From: Qianqiang Liu Date: Mon, 21 Oct 2024 22:58:01 +0200 Subject: [PATCH] KMSAN: uninit-value in inode_go_dump (5) When mounting of a corrupted disk image fails, the error message printed can reference uninitialized inode fields. To prevent that from happening, always initialize those fields. Reported-by: syzbot+aa0730b0a42646eb1359@syzkaller.appspotmail.com Signed-off-by: Qianqiang Liu Signed-off-by: Andreas Gruenbacher --- fs/gfs2/super.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index e22c1edc32b3..b9cef63c7871 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1537,11 +1537,13 @@ static struct inode *gfs2_alloc_inode(struct super_block *sb) if (!ip) return NULL; ip->i_no_addr = 0; + ip->i_no_formal_ino = 0; ip->i_flags = 0; ip->i_gl = NULL; gfs2_holder_mark_uninitialized(&ip->i_iopen_gh); memset(&ip->i_res, 0, sizeof(ip->i_res)); RB_CLEAR_NODE(&ip->i_res.rs_node); + ip->i_diskflags = 0; ip->i_rahead = 0; return &ip->i_inode; } -- 2.50.1