From: Oleg Nesterov <oleg@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Neil Horman <nhorman@tuxdriver.com>
Cc: linux-kernel@vger.kernel.org, earl_chew@agilent.com,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Andi Kleen <andi@firstfloor.org>,
Roland McGrath <roland@redhat.com>
Subject: [PATCH 0/2] do_coredump: misc cleanups
Date: Fri, 26 Jun 2009 21:14:18 +0200 [thread overview]
Message-ID: <20090626191418.GA22603@redhat.com> (raw)
In-Reply-To: <20090626202411.GH7337@hmsreliant.think-freely.org>
On 06/26, Neil Horman wrote:
>
> On Fri, Jun 26, 2009 at 06:59:08PM +0200, Oleg Nesterov wrote:
> >
> > Doesn't look good, if core_pattern starts with "|" any user can set
> > RLIMIT_CORE = 0 and then just do
> >
> > for (;;)
> > if (pid = fork())
> > kill(pid, SIGQUIT);
> >
> > to DOS printk/syslog, no?
> >
> I don't think SIGQUIT will trigger this, but SIGSEGV will.
SIGQUIT falls into SIG_KERNEL_COREDUMP_MASK too.
> Regardless, if you
> do that, I would think you have bigger problems on your system.
OK, agreed.
Neil, I think you are doing useful changes, but can't we cleanup
do_coredump() first?
I just can't look at unnecessary "if (ispipe)" checks...
Oleg.
next prev parent reply other threads:[~2009-06-26 22:29 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-22 17:28 [PATCH] exec: Make do_coredump more robust and safer when using pipes in core_pattern Neil Horman
2009-06-25 23:30 ` Andrew Morton
2009-06-26 1:49 ` Neil Horman
2009-06-26 10:48 ` Neil Horman
2009-06-26 16:20 ` Andrew Morton
2009-06-26 17:30 ` Neil Horman
2009-06-28 19:31 ` Andi Kleen
2009-06-28 20:52 ` Andrew Morton
2009-06-28 21:00 ` Andi Kleen
2009-06-28 21:18 ` Andrew Morton
2009-06-28 21:50 ` Eric W. Biederman
2009-06-28 21:35 ` Eric W. Biederman
2009-06-28 21:48 ` Andi Kleen
2009-06-28 22:06 ` Eric W. Biederman
2009-06-29 9:15 ` Andi Kleen
2009-06-28 21:52 ` Andrew Morton
2009-06-26 18:00 ` Neil Horman
2009-06-26 18:02 ` [PATCH 1/2] exec: Make do_coredump more robust and safer when using pipes in core_pattern: recursive dump detection Neil Horman
2009-06-26 16:59 ` Oleg Nesterov
2009-06-26 20:24 ` Neil Horman
2009-06-26 19:14 ` Oleg Nesterov [this message]
2009-06-26 19:14 ` [PATCH 1/2] do_coredump: factor out put_cred() calls Oleg Nesterov
2009-06-26 22:40 ` Roland McGrath
2009-06-26 20:33 ` Oleg Nesterov
2009-06-26 19:16 ` [PATCH 2/2] do_coredump: move !ispipe code into "else" branch Oleg Nesterov
2009-06-26 20:18 ` Q: do_coredump() && d_unhashed() Oleg Nesterov
2009-06-26 22:57 ` [PATCH 0/2] do_coredump: misc cleanups Neil Horman
2009-06-26 19:37 ` [PATCH 1/2] exec: Make do_coredump more robust and safer when using pipes in core_pattern: recursive dump detection Andrew Morton
2009-06-26 20:17 ` Neil Horman
2009-06-26 18:03 ` [PATCH 2/2] exec: Make do_coredump more robust and safer when using pipes in core_pattern: wait for core collectors Neil Horman
2009-06-26 16:48 ` Oleg Nesterov
2009-06-26 20:20 ` Neil Horman
2009-06-29 0:33 ` [PATCH 1/2] exec: Make do_coredump more robust and safer when using pipes in core_pattern (v3) Neil Horman
2009-06-29 0:35 ` [PATCH 2/2] " Neil Horman
2009-06-28 22:24 ` Oleg Nesterov
2009-06-28 23:24 ` Oleg Nesterov
2009-06-29 2:36 ` Neil Horman
2009-06-28 23:32 ` Oleg Nesterov
2009-06-29 10:21 ` Neil Horman
2009-06-30 0:06 ` Oleg Nesterov
2009-06-29 0:32 ` [PATCH 0/2] " Neil Horman
2009-06-30 17:38 ` [PATCH 0/3] exec: Make do_coredump more robust and safer when using pipes in core_pattern (v4) Neil Horman
2009-06-30 17:42 ` [PATCH 1/3] exec: Make do_coredump more resilient to recursive crashes (v4) Neil Horman
2009-06-30 17:43 ` [PATCH 2/3] exec: let do_coredump limit the number of concurrent dumps to pipes (v4) Neil Horman
2009-06-30 17:46 ` [PATCH 3/3] exec: Allow do_coredump to wait for user space pipe readers to complete (v4) Neil Horman
2009-07-01 5:52 ` Oleg Nesterov
2009-07-01 10:31 ` Neil Horman
2009-07-01 12:25 ` Oleg Nesterov
2009-07-01 14:12 ` Neil Horman
2009-07-01 14:48 ` Oleg Nesterov
2009-07-01 15:26 ` [PATCH 0/3] exec: Make do_coredump more robust and safer when using pipes in core_pattern (v5) Neil Horman
2009-07-01 15:30 ` [PATCH 1/3] exec: Make do_coredump more resilient to recursive crashes (v5) Neil Horman
2009-07-01 15:34 ` [PATCH 2/3] exec: let do_coredump limit the number of concurrent dumps to pipes (v5) Neil Horman
2009-07-01 15:37 ` [PATCH 3/3] exec: Allow do_coredump to wait for user space pipe readers to complete (v5) Neil Horman
2009-07-01 16:06 ` Oleg Nesterov
2009-07-01 18:19 ` Neil Horman
2009-07-01 18:28 ` [PATCH 0/3] exec: Make do_coredump more robust and safer when using pipes in core_pattern (v6) Neil Horman
2009-07-01 18:31 ` [PATCH 1/3] exec: Make do_coredump more resilient to recursive crashes (v6) Neil Horman
2009-07-01 18:32 ` [PATCH 2/3] exec: let do_coredump limit the number of concurrent dumps to pipes (v6) Neil Horman
2009-07-01 18:37 ` [PATCH 3/3] exec: Allow do_coredump to wait for user space pipe readers to complete (v6) Neil Horman
2009-07-02 8:29 ` Oleg Nesterov
2009-07-02 10:29 ` Neil Horman
2009-07-02 11:36 ` Oleg Nesterov
2009-07-02 14:44 ` Neil Horman
2009-07-02 15:37 ` Oleg Nesterov
2009-07-02 17:53 ` Neil Horman
2009-07-03 10:10 ` Oleg Nesterov
2009-07-02 22:57 ` [PATCH 0/3] exec: Make do_coredump more robust and safer when using pipes in core_pattern (v7) Neil Horman
2009-07-02 22:59 ` [PATCH 1/3] exec: Make do_coredump more resilient to recursive crashes (v7) Neil Horman
2009-07-02 23:00 ` [PATCH 2/3] exec: let do_coredump limit the number of concurrent dumps to pipes (v7) Neil Horman
2009-07-02 23:01 ` [PATCH 3/3] exec: Allow do_coredump to wait for user space pipe readers to complete (v7) Neil Horman
2009-07-03 10:16 ` Oleg Nesterov
2009-07-03 10:44 ` [PATCH 0/3] exec: Make do_coredump more robust and safer when using pipes in core_pattern (v8) Neil Horman
2009-07-03 10:50 ` [PATCH 1/3] exec: Make do_coredump more resilient to recursive crashes (v8) Neil Horman
2009-07-07 16:14 ` Neil Horman
2009-07-03 10:51 ` [PATCH 2/3] exec: let do_coredump limit the number of concurrent dumps to pipes (v8) Neil Horman
2009-07-07 16:15 ` Neil Horman
2009-07-03 10:52 ` [PATCH 3/3] exec: Allow do_coredump to wait for user space pipe readers to complete (v8) Neil Horman
2009-07-07 16:19 ` Neil Horman
2009-07-07 16:35 ` Oleg Nesterov
2009-07-07 16:13 ` [PATCH 0/3] exec: Make do_coredump more robust and safer when using pipes in core_pattern (v8) Neil Horman
2009-07-20 15:49 ` [PATCH 0/3] exec: Make do_coredump more robust and safer when using pipes in core_pattern (v9) Neil Horman
2009-07-20 16:27 ` [PATCH 1/3] exec: Make do_coredump more resilient to recursive crashes (v9) Neil Horman
2009-07-20 16:29 ` [PATCH 2/3] exec: let do_coredump limit the number of concurrent dumps to pipes (v9) Neil Horman
2009-08-07 17:08 ` Randy Dunlap
2009-07-20 16:32 ` [PATCH 3/3] exec: Allow do_coredump to wait for user space pipe readers to complete (v9) Neil Horman
2009-07-29 15:13 ` [PATCH] exec: Make do_coredump more robust and safer when using pipes in core_pattern Scott James Remnant
2009-07-29 20:18 ` Neil Horman
2009-07-31 20:20 ` Scott James Remnant
2009-08-01 13:41 ` Neil Horman
2009-08-01 18:28 ` Scott James Remnant
2009-08-02 0:22 ` Neil Horman
2009-08-02 13:49 ` Scott James Remnant
2009-08-02 23:50 ` Neil Horman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20090626191418.GA22603@redhat.com \
--to=oleg@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=andi@firstfloor.org \
--cc=earl_chew@agilent.com \
--cc=linux-kernel@vger.kernel.org \
--cc=nhorman@tuxdriver.com \
--cc=roland@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.