linux-kernel - Re: [Devel] [PATCH -mm] utrace: fix double free re __rcu_process

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20070424104048.GB10539@localhost.sw.ru>
Date:	Tue, 24 Apr 2007 14:40:48 +0400
From:	Alexey Dobriyan <adobriyan@...ru>
To:	roland@...hat.com, akpm@...l.org
Cc:	magnus_vesterlund@...mail.com, linux-kernel@...r.kernel.org,
	devel@...nvz.org
Subject: Re: [Devel] [PATCH -mm] utrace: fix double free re __rcu_process_callbacks()

On Tue, Apr 24, 2007 at 01:10:23PM +0400, Alexey Dobriyan wrote:
> ¹ But I see whole can of other bugs! I think they were already lurking
>   but weren't easily reproducable without hitting double-free first.
>   FWIW, it's
>   	BUG_ON(!list_empty(&tsk->ptracees));

mmm, pretty easily reproduced with:

	while true; do
		killall -9 expl_ptratt 2>/dev/null;
		killall -9 exe 2>/dev/null;
		sleep 2;
	done
vs
	while true; do ./expl_ptratt; done

-
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/