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From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
To: Christophe Leroy <christophe.leroy@c-s.fr>,
	Michael Ellerman <mpe@ellerman.id.au>
Cc: "linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH v3] powerpc/kprobes: Ignore traps that happened in real mode
Date: Sun, 22 Mar 2020 21:24:45 +0530	[thread overview]
Message-ID: <1584892419.luppysh99r.naveen@linux.ibm.com> (raw)
In-Reply-To: <f28a0219-abf1-07d4-b98b-b19db4af0f12@c-s.fr>

Christophe Leroy wrote:
> ping
> 
> 
> Le 18/02/2020 à 20:38, Christophe Leroy a écrit :
>> When a program check exception happens while MMU translation is
>> disabled, following Oops happens in kprobe_handler() in the following
>> code:
> 
> Michael, we have several traps in assembly while MMU is still disabled 
> (TRACE_IRQFLAGS, KUAP DEBUG, syscall from kernel, machine check in RTAS, 
> ...).
> Without this fix, all of them trigger an Oops when CONFIG_KPROBE is set.

For this patch:
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>


- Naveen


  reply	other threads:[~2020-03-22 16:21 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-18 19:38 [PATCH v3] powerpc/kprobes: Ignore traps that happened in real mode Christophe Leroy
2020-02-19  1:01 ` Masami Hiramatsu
2020-03-22 10:00 ` Christophe Leroy
2020-03-22 15:54   ` Naveen N. Rao [this message]
2020-03-24  5:28   ` Michael Ellerman
2020-03-26 12:06 ` Michael Ellerman

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