From: David Miller <davem@davemloft.net>
To: torvalds@linux-foundation.org
Cc: viro@zeniv.linux.org.uk, monstr@monstr.eu,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Subject: Re: sigaltstack fun
Date: Sun, 18 Nov 2012 14:03:32 -0500 (EST) [thread overview]
Message-ID: <20121118.140332.1273544560009594278.davem@davemloft.net> (raw)
In-Reply-To: <CA+55aFxncW2pEhsjg0AO9YKyvPaHyiXZMjoJZ1J8gA+8sH7HNw@mail.gmail.com>
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Sun, 18 Nov 2012 08:45:43 -1000
> On Sat, Nov 17, 2012 at 7:45 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
>>
>> Linus, do you have any objections to the above? FWIW, I've a tentative
>> patchset in that direction (most of it from the last cycle); right now
>> it + stuff currently in signal.git#for-next is at -3.4KLoC and I hadn't
>> dealt with the biarch side of things yet...
>
> I have absolutely no objections. sigaltstack has always been kind of
> messy, and made worse by the fact that it gets effectively no testing
> (because it's generally not used by normal code and even code that
> uses it tends to use it only for very uncommon events). So forcing all
> the sigaltstack code into generic code and at least avoiding the
> "different architectures can get things subtly - or not so subtly -
> wrong in different ways" sounds like a good thing.
FWIW, if folks are looking for testcases there are a small number in
glibc, a quick grep shows:
nptl/tst-cancel20.c
nptl/tst-cancel21.c
nptl/tst-signal6.c
debug/tst-longjmp_chk2.c
LTP probably has a bunch too.
next prev parent reply other threads:[~2012-11-18 19:03 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20121016223508.GR2616@ZenIV.linux.org.uk>
2012-10-17 5:32 ` new execve/kernel_thread design Max Filippov
2012-10-17 5:43 ` Al Viro
2012-10-17 5:43 ` Al Viro
[not found] ` <CACM3HyEpypULRWUc5ZnLnZ=uOWf3_j=9PXZiJrT_BXyGcQe9yg@mail.gmail.com>
2012-10-17 14:27 ` Michal Simek
2012-10-17 14:27 ` Michal Simek
2012-10-17 16:07 ` Al Viro
2012-10-17 16:07 ` Al Viro
2012-10-17 16:19 ` Al Viro
2012-10-17 16:19 ` Al Viro
2012-11-15 16:41 ` Michal Simek
2012-11-15 16:41 ` Michal Simek
2012-11-15 21:55 ` Al Viro
2012-11-15 21:55 ` Al Viro
2012-11-16 7:59 ` Michal Simek
2012-11-18 5:45 ` sigaltstack fun (was Re: new execve/kernel_thread design) Al Viro
2012-11-18 18:45 ` Linus Torvalds
2012-11-18 19:03 ` David Miller [this message]
2012-11-18 19:59 ` sigaltstack fun Al Viro
2012-11-18 19:59 ` Al Viro
2012-11-18 20:48 ` David Miller
2012-11-19 4:55 ` Greg KH
2012-11-18 21:02 ` Al Viro
2012-11-18 21:18 ` David Miller
2012-11-19 1:10 ` Al Viro
2012-11-19 1:30 ` David Miller
2012-11-19 2:35 ` Al Viro
2012-11-19 2:35 ` Al Viro
2012-11-19 3:27 ` David Miller
2012-11-26 5:10 ` Al Viro
2012-11-26 5:15 ` Al Viro
2012-12-04 3:03 ` David Miller
2012-12-04 2:58 ` David Miller
2012-11-21 1:53 ` sigaltstack fun (was Re: new execve/kernel_thread design) Al Viro
2012-10-19 20:25 ` [PATCH] tile: support GENERIC_KERNEL_THREAD and GENERIC_KERNEL_EXECVE Chris Metcalf
2012-10-19 20:25 ` Chris Metcalf
2012-10-19 21:35 ` Al Viro
2012-10-20 13:06 ` Chris Metcalf
2012-10-20 15:34 ` Al Viro
2012-10-20 17:16 ` Al Viro
2012-10-23 17:30 ` Chris Metcalf
2012-10-23 18:41 ` Al Viro
2012-10-23 19:22 ` Chris Metcalf
2012-10-23 20:36 ` Al Viro
2012-10-23 20:36 ` Al Viro
2012-10-25 13:31 ` Chris Metcalf
2012-10-25 14:25 ` Al Viro
2012-10-25 14:25 ` Al Viro
2012-10-23 20:47 ` Thomas Gleixner
2012-10-23 20:47 ` Thomas Gleixner
2012-10-23 20:51 ` Jeff King
2012-10-23 20:51 ` Jeff King
2012-10-23 21:09 ` Catalin Marinas
2012-10-23 21:09 ` Catalin Marinas
2012-10-23 21:22 ` Jeff King
2012-10-23 21:22 ` Jeff King
2012-10-24 11:18 ` Catalin Marinas
2012-10-24 11:18 ` Catalin Marinas
2012-10-23 21:25 ` Thomas Gleixner
2012-10-23 21:47 ` Jeff King
2012-10-23 21:47 ` Jeff King
2012-10-23 22:06 ` Marc Gauthier
2012-10-23 22:06 ` Marc Gauthier
2012-10-23 22:23 ` Jeff King
2012-10-24 6:02 ` Johannes Sixt
2012-10-24 6:02 ` Johannes Sixt
2012-10-24 1:02 ` Linus Torvalds
2012-10-24 1:56 ` Al Viro
2012-10-24 2:14 ` Linus Torvalds
2012-10-24 6:02 ` Ingo Molnar
2012-10-24 6:02 ` Ingo Molnar
2012-10-23 17:30 ` [PATCH] arch/tile: eliminate pt_regs trampolines for syscalls Chris Metcalf
2012-10-23 17:30 ` Chris Metcalf
2012-10-22 14:23 ` [PATCH] tile: support GENERIC_KERNEL_THREAD and GENERIC_KERNEL_EXECVE Catalin Marinas
2012-10-26 18:31 ` [update] Re: new execve/kernel_thread design Al Viro
2012-10-26 18:31 ` Al Viro
2012-10-27 3:32 ` Al Viro
2012-10-27 3:32 ` Al Viro
2012-10-29 7:53 ` Martin Schwidefsky
2012-10-29 7:53 ` Martin Schwidefsky
2012-10-29 13:25 ` Al Viro
2012-10-29 13:25 ` Al Viro
2012-10-29 14:38 ` Martin Schwidefsky
2012-10-29 14:38 ` Martin Schwidefsky
2012-10-29 14:57 ` Al Viro
2012-10-29 14:57 ` Al Viro
2012-12-07 22:23 ` Al Viro
2012-12-07 22:23 ` Al Viro
2012-12-08 2:40 ` Chris Metcalf
2012-12-08 2:40 ` Chris Metcalf
2012-12-13 1:54 ` Hirokazu Takata
2012-12-13 1:54 ` Hirokazu Takata
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