linux-kernel - Re: [PATCH v3] signal: trace_signal_deliver when signal_group

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Date:   Tue, 23 Apr 2019 14:13:00 +0000
From:   weizhenliang <weizhenliang@...wei.com>
To:     Oleg Nesterov <oleg@...hat.com>
CC:     "ebiederm@...ssion.com" <ebiederm@...ssion.com>,
        "colona@...sta.com" <colona@...sta.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "christian@...uner.io" <christian@...uner.io>,
        "arnd@...db.de" <arnd@...db.de>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "deepa.kernel@...il.com" <deepa.kernel@...il.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
Subject: Re: [PATCH v3] signal: trace_signal_deliver when signal_group_exit

On 04/23, Oleg wrote:
>On 04/23, weizhenliang wrote:
>>
>> Last time Oleg suggested using SIG_DFL as the third parameter, but its type is 'void (*)(int)', but not expected 'struct k_sigaction *'.
>
>Yes I misread the signature of TRACE_EVENT(signal_deliver), and I thought you at least compiled the kernel with your patch applied ;)
>
>> How about
>> 	trace_signal_deliver(SIGKILL, SEND_SIG_NOINFO, &sighand->action[signr 
>> - 1]); ?
>
>sure, this should fix the problem.

Sorry about that, I will pay more attention to it in the future.
And thanks for your reply, I will re-adjust the patch later.

Wei.