From: Oleg Nesterov <oleg@redhat.com>
To: Tejun Heo <tj@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: vda.linux@googlemail.com, jan.kratochvil@redhat.com,
pedro@codesourcery.com, indan@nul.nu, bdonlan@gmail.com,
linux-kernel@vger.kernel.org
Subject: [PATCH 0/1] ptrace: fix ptrace_signal() && STOP_DEQUEUED interaction
Date: Thu, 7 Jul 2011 21:03:01 +0200 [thread overview]
Message-ID: <20110707190301.GA25332@redhat.com> (raw)
Another very annoying and ancient problem which needs the fix,
and any fix obviously adds the subtle user-visible changes.
In short, in general it is simply impossible to know whether
PTRACE_CONT(SIGSTOP) will stop the tracee or not.
ee77f075 "signal: Turn SIGNAL_STOP_DEQUEUED into GROUP_STOP_DEQUEUED"
makes the things better, at least STOP_DEQUEUED can't be set/cleared
by another thread, but still without this patch the behavior is not
clearly defined.
Oleg.
next reply other threads:[~2011-07-07 19:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-07 19:03 Oleg Nesterov [this message]
2011-07-07 19:03 ` [PATCH 1/1] ptrace: fix ptrace_signal() && STOP_DEQUEUED interaction Oleg Nesterov
2011-07-13 10:04 ` Tejun Heo
2011-07-13 18:33 ` Oleg Nesterov
2011-07-14 6:45 ` Tejun Heo
2011-07-14 19:12 ` Oleg Nesterov
2011-07-17 19:03 ` Oleg Nesterov
2011-07-20 16:44 ` Tejun Heo
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=20110707190301.GA25332@redhat.com \
--to=oleg@redhat.com \
--cc=bdonlan@gmail.com \
--cc=indan@nul.nu \
--cc=jan.kratochvil@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=pedro@codesourcery.com \
--cc=tj@kernel.org \
--cc=torvalds@linux-foundation.org \
--cc=vda.linux@googlemail.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.