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  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:	Mon, 10 Nov 2014 22:59:59 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Aaron Tomlin <atomlin@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Roland McGrath <roland@...k.frob.com>,
	Sterling Alexander <stalexan@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/5] exit: reparent zombie fix + cleanups/optimizations

Hello.

On 11/07, Oleg Nesterov wrote:
>
> I tried to optimize the usage of tasklist_lock in exit_notify() paths
> but found the bug which should be fixed first: the EXIT_DEAD setting
> in reparent_leader() can break the task_ppid_nr_ns()-like code and
> ptrace_parent().
>
> I am still thinking about the "right" fix, but whatever we do we need
> to cleanup these users, probably before the fix.

Yes, we need to cleanup these users but lets fix the bug first. See the
changelog in 2/5.

Plus cleanups + initial (micro)optimizations, more to come.

Oleg.

 include/linux/ptrace.h |    2 +-
 kernel/exit.c          |   51 +++++++++++++++++++----------------------------
 kernel/ptrace.c        |   23 ++------------------
 kernel/sched/core.c    |    4 ++-
 4 files changed, 28 insertions(+), 52 deletions(-)

--
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/

Powered by blists - more mailing lists