linux-kernel - Re: Linux 2.6.26-rc4

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 3 Jun 2008 11:40:35 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Miklos Szeredi <miklos@...redi.hu>
Cc:	jesper@...gh.cc, torvalds@...ux-foundation.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: Linux 2.6.26-rc4

On Tue, Jun 03, 2008 at 12:13:54PM +0200, Miklos Szeredi wrote:
> 
> http://www.kerneloops.org/raw.php?rawid=12419&msgid=
> 
> Looks like a negative inode in S_ISDIR(mnt->mnt_root->d_inode->i_mode),
> which would be due to NFS not properly filling in its root dentry?

Look more carefully.  It's path->dentry; aside of the fact that dentry
pointer is fetched at offset 8 from one of the arguments (fits path->dentry,
too low for mnt->mnt_root), do_add_mount() itself has just done S_ISLNK
on the very same thing, so it'd die before getting to graft_tree().

No, it's either path_lookup() somehow returning a negative dentry in
do_mount() (which shouldn't be possible, unless it's some crap around
return_reval in __link_path_walk()) or it's follow_down() giving us
a negative dentry.  Which almost certainly would've exploded prior to
that...
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/