linux-kernel - BKL use in ptrace

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-next>] [day] [month] [year] [list]

Message-ID: <20091220185318.GA15989@basil.fritz.box>
Date:	Sun, 20 Dec 2009 19:53:18 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	oleg@...hat.com, linux-kernel@...r.kernel.org
Cc:	torvalds@...ux-foundation.org
Subject: BKL use in ptrace


Hi,

ptrace has this comment/BKL use:

        /*
         * This lock_kernel fixes a subtle race with suid exec
         */
        lock_kernel();

But unless I'm blind I don't see execve actually getting the BKL
anywhere. So is this comment outdated or misleading (is the race with exit?)
or is there a bug?

Thanks,
-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
--
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/