Re: [PATCH v3 09/11] ptrace: Don't change __state
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- To: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
- Subject: Re: [PATCH v3 09/11] ptrace: Don't change __state
- From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
- Date: Thu, 5 May 2022 14:50:31 +0200
- Cc: linux-kernel@xxxxxxxxxxxxxxx, rjw@xxxxxxxxxxxxx, Oleg Nesterov <oleg@xxxxxxxxxx>, mingo@xxxxxxxxxx, vincent.guittot@xxxxxxxxxx, dietmar.eggemann@xxxxxxx, rostedt@xxxxxxxxxxx, mgorman@xxxxxxx, Will Deacon <will@xxxxxxxxxx>, tj@xxxxxxxxxx, linux-pm@xxxxxxxxxxxxxxx, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Richard Weinberger <richard@xxxxxx>, Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx>, Johannes Berg <johannes@xxxxxxxxxxxxxxxx>, linux-um@xxxxxxxxxxxxxxxxxxx, Chris Zankel <chris@xxxxxxxxxx>, Max Filippov <jcmvbkbc@xxxxxxxxx>, linux-xtensa@xxxxxxxxxxxxxxxx, Kees Cook <keescook@xxxxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, linux-ia64@xxxxxxxxxxxxxxx
- In-reply-to: <20220504224058.476193-9-ebiederm@xmission.com>
- References: <87k0b0apne.fsf_-_@email.froward.int.ebiederm.org> <20220504224058.476193-9-ebiederm@xmission.com>
On 2022-05-04 17:40:56 [-0500], Eric W. Biederman wrote:
> Stop playing with tsk->__state to remove TASK_WAKEKILL while a ptrace
> command is executing.
>
> Instead remove TASK_WAKEKILL from the definition of TASK_TRACED, and
> implemention a new jobctl flag TASK_PTRACE_FROZEN. This new flag is
implement ?
> set in jobctl_freeze_task and cleared when ptrace_stop is awoken or in
> jobctl_unfreeze_task (when ptrace_stop remains asleep).
Sebastian
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