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Re: [PATCH] mips: siginfo.h: add SIGSYS details [BZ #18863]
- From: Markos Chandras <Markos dot Chandras at imgtec dot com>
- To: Joseph Myers <joseph at codesourcery dot com>, Mike Frysinger <vapier at gentoo dot org>
- Cc: <libc-alpha at sourceware dot org>, <linux-mips at linux-mips dot org>
- Date: Thu, 27 Aug 2015 09:00:57 +0100
- Subject: Re: [PATCH] mips: siginfo.h: add SIGSYS details [BZ #18863]
- Authentication-results: sourceware.org; auth=none
- References: <1440563342-5411-1-git-send-email-vapier at gentoo dot org> <alpine dot DEB dot 2 dot 10 dot 1508260918240 dot 26898 at digraph dot polyomino dot org dot uk> <20150826171017 dot GD3116 at vapier>
On 08/26/2015 06:10 PM, Mike Frysinger wrote:
> On 26 Aug 2015 09:30, Joseph Myers wrote:
>> On Wed, 26 Aug 2015, Mike Frysinger wrote:
>>> Linux 3.13 added SIGSYS details to siginfo_t; update glibc's copy to
>>> keep in sync with it.
>>>
>>> 2015-08-25 Mike Frysinger <vapier@gentoo.org>
>>>
>>> [BZ #18863]
>>> * sysdeps/unix/sysv/linux/mips/bits/siginfo.h (siginfo_t): Add _sigsys.
>>> (si_call_addr): Define.
>>> (si_syscall): Define.
>>> (si_arch): Define.
>>
>> OK. CC to linux-mips because I see that the MIPS implementation of
>> copy_siginfo_to_user32 doesn't handle __SI_SYS, unlike arm64 at least, so
>> I suspect this won't in fact work for n32 or for o32 with a 64-bit kernel.
>
> i'm getting reports of seccomp misbehavior on mips already which is what
> started me down this glibc path. i suspect the original port was tested
> against o32 kernels only.
> -mike
>
I have recently tested mips64 n64/n32 with the testsuite from libseccomp
and that led me to this fix
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9f161439e4104b641a7bfb9b89581d801159fec8
if you are aware of other problems (and perhaps a test to trigger them)
that could be kernel related let me know
--
markos