Subject: Re: [PATCH v2 1/6] ptrace: move clearing of TIF_SYSCALL_EMU flag to core

From: Oleg Nesterov <[email-masked]>
Date: Mon, 18 Mar 2019 18:29:11 +0100

On 03/18, Sudeep Holla wrote:
 @@ -534,6 +534,10 @@ static int ptrace_detach(struct task_struct *child, unsigned int data)
>  	/* Architecture-specific hardware disable .. */
>  	ptrace_disable(child);
>  
> +#ifdef TIF_SYSCALL_EMU
> +	clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
> +#endif

perhaps it makes sense to factor out clear_tsk_thread_flag(TIF_SYSCALL_EMU), but
then we should probably clear it along with TIF_SYSCALL_TRACE in __ptrace_unlink?

Oleg.

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