Re: [PATCH] mips: siginfo.h: add SIGSYS details [BZ #18863]

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On 08/27/2015 10:41 AM, Joseph Myers wrote:
> On Thu, 27 Aug 2015, Markos Chandras wrote:
> 
>>>> 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
> 
> My observation about copy_siginfo_to_user32 missing a case was purely 
> based on the kernel source code.  I've no reason to think it has anything 
> to do with seccomp problems.
> 

Yeah, my email was directed to Mike who said he is getting reports that
seccomp on MIPS has issues and that led him to his glibc patch.

-- 
markos




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