From: Stas Sergeev <stsp-cmBhpYW9OiY@public.gmane.org>
To: Linux kernel <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Cc: linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
Subject: [PATCH 0/4] make sigaltstack() compatible with swapcontext()
Date: Sun, 31 Jan 2016 19:16:41 +0300 [thread overview]
Message-ID: <56AE3369.2090709@list.ru> (raw)
The following patches add the self-test for
sigaltstack(SS_DISABLE) inside the signal handler,
and allow an app to temporarily disable and re-enable
the sigaltstack within a sighandler.
This is needed to make sigaltstack() compatible with
swapcontext(): before using swapcontext() inside
the sighandler, the sigaltstack should be disabled, or
the stack will be corrupted by the subsequent signals.
arch/score/kernel/signal.c | 2
arch/x86/kernel/signal.c | 2
include/linux/sched.h | 8 +
include/linux/signal.h | 2
kernel/fork.c | 4
kernel/signal.c | 54 +++++++----
tools/testing/selftests/Makefile | 1
tools/testing/selftests/sigaltstack/Makefile | 8 +
tools/testing/selftests/sigaltstack/sas.c | 132
+++++++++++++++++++++++++++
9 files changed, 189 insertions(+), 24 deletions(-)
WARNING: multiple messages have this Message-ID (diff)
From: Stas Sergeev <stsp@list.ru>
To: Linux kernel <linux-kernel@vger.kernel.org>
Cc: linux-api@vger.kernel.org, Andy Lutomirski <luto@amacapital.net>
Subject: [PATCH 0/4] make sigaltstack() compatible with swapcontext()
Date: Sun, 31 Jan 2016 19:16:41 +0300 [thread overview]
Message-ID: <56AE3369.2090709@list.ru> (raw)
The following patches add the self-test for
sigaltstack(SS_DISABLE) inside the signal handler,
and allow an app to temporarily disable and re-enable
the sigaltstack within a sighandler.
This is needed to make sigaltstack() compatible with
swapcontext(): before using swapcontext() inside
the sighandler, the sigaltstack should be disabled, or
the stack will be corrupted by the subsequent signals.
arch/score/kernel/signal.c | 2
arch/x86/kernel/signal.c | 2
include/linux/sched.h | 8 +
include/linux/signal.h | 2
kernel/fork.c | 4
kernel/signal.c | 54 +++++++----
tools/testing/selftests/Makefile | 1
tools/testing/selftests/sigaltstack/Makefile | 8 +
tools/testing/selftests/sigaltstack/sas.c | 132
+++++++++++++++++++++++++++
9 files changed, 189 insertions(+), 24 deletions(-)
next reply other threads:[~2016-01-31 16:16 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-31 16:16 Stas Sergeev [this message]
2016-01-31 16:16 ` [PATCH 0/4] make sigaltstack() compatible with swapcontext() Stas Sergeev
[not found] ` <56AE3369.2090709-cmBhpYW9OiY@public.gmane.org>
2016-01-31 16:18 ` [PATCH 1/4] selftests: Add test for sigaltstack(SS_DISABLE) inside sighandler Stas Sergeev
2016-01-31 16:18 ` Stas Sergeev
2016-02-12 16:12 ` Shuah Khan
[not found] ` <56BE046D.4080203-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>
2016-02-12 16:17 ` Stas Sergeev
2016-02-12 16:17 ` Stas Sergeev
2016-01-31 16:28 ` [PATCH 4/4] sigaltstack: allow disabling and re-enabling sas within sighandler Stas Sergeev
2016-01-31 16:28 ` Stas Sergeev
[not found] ` <56AE3626.7080706-cmBhpYW9OiY@public.gmane.org>
2016-01-31 17:00 ` Andy Lutomirski
2016-01-31 17:00 ` Andy Lutomirski
2016-01-31 17:33 ` Stas Sergeev
[not found] ` <56AE4567.9000403-cmBhpYW9OiY@public.gmane.org>
2016-01-31 19:03 ` Andy Lutomirski
2016-01-31 19:03 ` Andy Lutomirski
[not found] ` <CALCETrUVODhNRwvbAfC0q3RVJAFw-ZFGhsww2uQsk3UZjLynnQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-01-31 20:08 ` Stas Sergeev
2016-01-31 20:08 ` Stas Sergeev
[not found] ` <56AE69AD.6090005-cmBhpYW9OiY@public.gmane.org>
2016-01-31 20:11 ` Andy Lutomirski
2016-01-31 20:11 ` Andy Lutomirski
[not found] ` <CALCETrXPYLqunBNxjS8bpmpg+jG_MXbSyZtUVK3X3m+pGSQ1Og-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-01-31 22:36 ` Stas Sergeev
2016-01-31 22:36 ` Stas Sergeev
[not found] ` <56AE8C80.6030408-cmBhpYW9OiY@public.gmane.org>
2016-01-31 22:44 ` Andy Lutomirski
2016-01-31 22:44 ` Andy Lutomirski
[not found] ` <CALCETrU2u7h98oqtMcgvU54j21-bpTfBXUEJNQO9r1w5FHc-HQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-01-31 23:45 ` Stas Sergeev
2016-01-31 23:45 ` Stas Sergeev
2016-02-01 16:06 ` Oleg Nesterov
2016-02-01 16:06 ` Oleg Nesterov
[not found] ` <20160201160625.GA18276-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-02-01 16:57 ` Stas Sergeev
2016-02-01 16:57 ` Stas Sergeev
[not found] ` <56AF8E89.5090400-cmBhpYW9OiY@public.gmane.org>
2016-02-01 17:27 ` Oleg Nesterov
2016-02-01 17:27 ` Oleg Nesterov
2016-02-01 17:09 ` Oleg Nesterov
2016-02-01 17:09 ` Oleg Nesterov
2016-02-01 17:26 ` Stas Sergeev
2016-02-01 18:04 ` Oleg Nesterov
[not found] ` <20160201180443.GA21064-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-02-01 18:16 ` Stas Sergeev
2016-02-01 18:16 ` Stas Sergeev
[not found] ` <56AFA0E2.1030302-cmBhpYW9OiY@public.gmane.org>
2016-02-01 18:28 ` Andy Lutomirski
2016-02-01 18:28 ` Andy Lutomirski
[not found] ` <CALCETrWv87BS5hH20qKd7WGuf6EAEb4f78Myq+6fqXgSJWoiew-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-02-01 18:40 ` Stas Sergeev
2016-02-01 18:40 ` Stas Sergeev
2016-02-01 18:52 ` Oleg Nesterov
2016-02-01 18:52 ` Oleg Nesterov
[not found] ` <20160201185223.GA21136-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-02-01 19:01 ` Stas Sergeev
2016-02-01 19:01 ` Stas Sergeev
2016-02-01 19:29 ` Oleg Nesterov
[not found] ` <20160201192936.GA21214-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-02-01 19:46 ` Stas Sergeev
2016-02-01 19:46 ` Stas Sergeev
2016-02-01 20:41 ` Oleg Nesterov
[not found] ` <20160201204114.GA21638-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-02-01 23:06 ` Stas Sergeev
2016-02-01 23:06 ` Stas Sergeev
2016-01-31 16:21 ` [PATCH 2/4] score: signal: fix sigaltstack check Stas Sergeev
2016-02-02 19:07 ` Lennox Wu
2016-01-31 16:24 ` [PATCH 3/4] x86: signal: unify the sigaltstack check with other arches Stas Sergeev
2016-01-31 16:58 ` Andy Lutomirski
2016-01-31 18:03 ` Stas Sergeev
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