From: Denys Vlasenko <vda.linux@googlemail.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
indan@nul.nu, bdonlan@gmail.com, linux-kernel@vger.kernel.org,
jan.kratochvil@redhat.com, akpm@linux-foundation.org
Subject: Re: thread leader death under strace (was Re: [PATCH 03/10] ptrace: implement PTRACE_SEIZE)
Date: Fri, 3 Jun 2011 20:10:03 +0200 [thread overview]
Message-ID: <201106032010.03947.vda.linux@googlemail.com> (raw)
In-Reply-To: <20110603152937.GB23757@redhat.com>
On Friday 03 June 2011 17:29, Oleg Nesterov wrote:
> > > > > thread_leader(void *unused)
> > > > > {
> > > > > /* malloc gives sufficiently aligned buffer.
> > > > > * long buf[] does not! (on ia64).
> > > > > */
> > > > > clone2(thread1, malloc(16 * 1024), 16 * 1024, 0
> > > >
> > > > Probably because of this clone2.
> >
> > This seems to be not a problem (it is defined to clone()).
>
> Doesn't matter.
>
> Unlike pthread_create() which uses CLONE_SETTLS, this doesn't setup
> the tls area, and I assume you used -lpthread. In this case it is clear
> why raise() doesn't work, pt-raise.c thinks that THREAD_GETMEM(tid)
> should always work.
I don't link against pthread.
--
vda
next prev parent reply other threads:[~2011-06-03 18:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-02 15:33 thread leader death under strace (was Re: [PATCH 03/10] ptrace: implement PTRACE_SEIZE) Denys Vlasenko
2011-06-02 16:36 ` Oleg Nesterov
2011-06-02 16:39 ` Oleg Nesterov
2011-06-02 22:26 ` Denys Vlasenko
2011-06-03 15:29 ` Oleg Nesterov
2011-06-03 18:10 ` Denys Vlasenko [this message]
2011-06-04 15:27 ` Oleg Nesterov
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