From: Florian Weimer <fweimer@redhat.com>
To: cambda@linux.alibaba.com
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
Xuan Zhuo <xuanzhuo@linux.alibaba.com>,
Dust Li <dust.li@linux.alibaba.com>,
Tony Lu <tonylu@linux.alibaba.com>
Subject: Re: Syscall kill() can send signal to thread ID
Date: Fri, 23 Sep 2022 09:53:30 +0200 [thread overview]
Message-ID: <87illeedc5.fsf@oldenburg.str.redhat.com> (raw)
In-Reply-To: <0CC7D0E7-71C5-4DAC-8A01-F9E13659F864@linux.alibaba.com> (cambda@linux.alibaba.com's message of "Fri, 23 Sep 2022 14:25:05 +0800")
> I don't quite understand what you mean, sorry. But if kill() returns
> -ESRCH for tid which is not equal to tgid, kill() can only send signal
> to thread group via main thread id, that is what BSD did and manual
> said. It seems not odd?
It's still odd because there's one TID per process that's valid for
kill by accident. That's all.
Thanks,
Florian
next prev parent reply other threads:[~2022-09-23 7:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-22 9:11 Syscall kill() can send signal to thread ID cambda
2022-09-22 15:09 ` Eric W. Biederman
2022-09-23 5:31 ` Florian Weimer
2022-09-23 6:25 ` cambda
2022-09-23 7:53 ` Florian Weimer [this message]
2022-09-23 8:40 ` Cambda Zhu
2022-09-23 21:15 ` Eric W. Biederman
2022-09-22 15:33 ` Eric W. Biederman
2022-09-23 3:56 ` cambda
2022-09-23 11:24 ` David Laight
2022-09-23 21:21 ` Eric W. Biederman
2022-09-24 3:16 ` Cambda Zhu
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