[PATCH v11 01/12] sk_run_filter: add support for custom load_pointer · Will Drewry <wad@chromium.org> · 2012-02-25
[PATCH v11 03/12] seccomp: kill the seccomp_t typedef · Will Drewry <wad@chromium.org> · 2012-02-25
[PATCH v11 07/12] seccomp: add SECCOMP_RET_ERRNO · Will Drewry <wad@chromium.org> · 2012-02-25
Re: [PATCH v11 07/12] seccomp: add SECCOMP_RET_ERRNO · Kees Cook <hidden> · 2012-02-25
Re: [PATCH v11 07/12] seccomp: add SECCOMP_RET_ERRNO · Will Drewry <wad@chromium.org> · 2012-02-27
Re: [PATCH v11 07/12] seccomp: add SECCOMP_RET_ERRNO · Oleg Nesterov <oleg@redhat.com> · 2012-02-27
Re: [PATCH v11 07/12] seccomp: add SECCOMP_RET_ERRNO · Kees Cook <hidden> · 2012-02-27
Re: [PATCH v11 07/12] seccomp: add SECCOMP_RET_ERRNO · Oleg Nesterov <oleg@redhat.com> · 2012-02-27
Re: [PATCH v11 07/12] seccomp: add SECCOMP_RET_ERRNO · Andrew Lutomirski <hidden> · 2012-02-27
Re: [PATCH v11 07/12] seccomp: add SECCOMP_RET_ERRNO · Kees Cook <hidden> · 2012-02-27
Re: [PATCH v11 07/12] seccomp: add SECCOMP_RET_ERRNO · Will Drewry <wad@chromium.org> · 2012-02-27
[PATCH v11 06/12] seccomp: add system call filtering using BPF · Will Drewry <wad@chromium.org> · 2012-02-25
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Kees Cook <hidden> · 2012-02-26
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Will Drewry <wad@chromium.org> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Eric Paris <eparis@redhat.com> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Kees Cook <hidden> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Eric Paris <eparis@redhat.com> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Kees Cook <hidden> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Eric Paris <eparis@redhat.com> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Kees Cook <hidden> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Oleg Nesterov <oleg@redhat.com> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Will Drewry <wad@chromium.org> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Kees Cook <hidden> · 2012-02-27
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Oleg Nesterov <oleg@redhat.com> · 2012-02-28
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Will Drewry <wad@chromium.org> · 2012-02-28
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Indan Zupancic <hidden> · 2012-02-28
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Kees Cook <hidden> · 2012-02-28
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Will Drewry <wad@chromium.org> · 2012-02-28
Re: [PATCH v11 06/12] seccomp: add system call filtering using BPF · Markus Gutschke <hidden> · 2012-02-28
[PATCH v11 12/12] Documentation: prctl/seccomp_filter · Will Drewry <wad@chromium.org> · 2012-02-25
[PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Will Drewry <wad@chromium.org> · 2012-02-25
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Oleg Nesterov <oleg@redhat.com> · 2012-02-27
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Will Drewry <wad@chromium.org> · 2012-02-27
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Oleg Nesterov <oleg@redhat.com> · 2012-02-28
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Will Drewry <wad@chromium.org> · 2012-02-28
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Will Drewry <wad@chromium.org> · 2012-02-28
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Oleg Nesterov <oleg@redhat.com> · 2012-02-29
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Will Drewry <wad@chromium.org> · 2012-02-29
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Oleg Nesterov <oleg@redhat.com> · 2012-02-29
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Roland McGrath <hidden> · 2012-02-29
Re: [PATCH v11 10/12] ptrace,seccomp: Add PTRACE_SECCOMP support · Will Drewry <wad@chromium.org> · 2012-02-29
[PATCH v11 09/12] seccomp: Add SECCOMP_RET_TRAP · Will Drewry <wad@chromium.org> · 2012-02-25
[PATCH v11 05/12] arch/x86: add syscall_get_arch to syscall.h · Will Drewry <wad@chromium.org> · 2012-02-25
[PATCH v11 04/12] asm/syscall.h: add syscall_get_arch · Will Drewry <wad@chromium.org> · 2012-02-25
[PATCH v11 02/12] net/compat.c,linux/filter.h: share compat_sock_fprog · Will Drewry <wad@chromium.org> · 2012-02-25
[PATCH v11 08/12] signal, x86: add SIGSYS info and make it synchronous. · Will Drewry <wad@chromium.org> · 2012-02-25
Re: [PATCH v11 08/12] signal, x86: add SIGSYS info and make it synchronous. · Oleg Nesterov <oleg@redhat.com> · 2012-02-27
Re: [PATCH v11 08/12] signal, x86: add SIGSYS info and make it synchronous. · Roland McGrath <hidden> · 2012-02-27
Re: [PATCH v11 08/12] signal, x86: add SIGSYS info and make it synchronous. · Oleg Nesterov <oleg@redhat.com> · 2012-02-27
Re: [PATCH v11 08/12] signal, x86: add SIGSYS info and make it synchronous. · Will Drewry <wad@chromium.org> · 2012-02-27
Re: [PATCH v11 08/12] signal, x86: add SIGSYS info and make it synchronous. · Oleg Nesterov <oleg@redhat.com> · 2012-02-28
Re: [PATCH v11 08/12] signal, x86: add SIGSYS info and make it synchronous. · Will Drewry <wad@chromium.org> · 2012-02-28
[PATCH v11 11/12] x86: Enable HAVE_ARCH_SECCOMP_FILTER · Will Drewry <wad@chromium.org> · 2012-02-25

Re: [PATCH v11 08/12] signal, x86: add SIGSYS info and make it synchronous.

From: Oleg Nesterov <oleg@redhat.com>
Date: 2012-02-27 17:29:46
Also in: linux-arch, lkml

On 02/24, Will Drewry wrote:

To ensure that SIGSYS delivery occurs on return from the triggering
system call, SIGSYS is added to the SYNCHRONOUS_MASK macro.

Hmm. Can't understand... please help.

 #define SYNCHRONOUS_MASK \
 	(sigmask(SIGSEGV) | sigmask(SIGBUS) | sigmask(SIGILL) | \
-	 sigmask(SIGTRAP) | sigmask(SIGFPE))
+	 sigmask(SIGTRAP) | sigmask(SIGFPE) | sigmask(SIGSYS))

Why?

SYNCHRONOUS_MASK just tells dequeue_signal() "pick them first".
This is needed to make sure that the handler for, say SIGSEGV,
can use ucontext->ip as a faulting addr.

But seccomp adds info->si_call_addr, this looks unneeded.

Oleg.

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