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KMSAN: uninit-value in inode_go_dump (5)

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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 <qianqiang.liu@163.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Qianqiang Liu 2024-10-21 22:58:01 +02:00 committed by Andreas Gruenbacher
parent 7c6f714d88
commit f9417fcfca
1 changed files with 2 additions and 0 deletions
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2
fs/gfs2/super.c
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@ -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;
}