linux-kernel - Re: [PATCH 03/10] uprobes: Send SIGILL if handle

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Date:	Wed, 6 May 2015 19:00:24 +0530
From:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Anton Arapov <arapov@...il.com>,
	David Long <dave.long@...aro.org>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Ingo Molnar <mingo@...nel.org>,
	Jan Willeke <willeke@...ibm.com>,
	Jim Keniston <jkenisto@...ibm.com>,
	Mark Wielaard <mjw@...hat.com>,
	Pratyush Anand <panand@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/10] uprobes: Send SIGILL if handle_trampoline() fails

* Oleg Nesterov <oleg@...hat.com> [2015-05-04 14:48:58]:

> 1. It doesn't make sense to continue if handle_trampoline() fails,
>    change handle_swbp() to always return after this call.
> 
> 2. Turn pr_warn() into uprobe_warn(), and change handle_trampoline()
>    to send SIGILL on failure. It is pointless to return to user mode
>    with the corrupted instruction_pointer() which we can't restore.

I agree

> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>
> ---

Acked-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
-- 
Thanks and Regards
Srikar Dronamraju

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