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From: Mark Rutland <mark.rutland@arm.com>
To: linux-kernel@vger.kernel.org
Cc: akpm@linux-foundation.org, aryabinin@virtuozzo.com,
	dvyukov@google.com, mingo@redhat.com, peterz@infradead.org
Subject: Re: [PATCH 1/3] kcov: ensure irq code sees a valid area
Date: Fri, 4 May 2018 15:56:26 +0100	[thread overview]
Message-ID: <20180504145626.gup5ytwt3uqt57xm@lakrids.cambridge.arm.com> (raw)
In-Reply-To: <20180504135535.53744-2-mark.rutland@arm.com>

On Fri, May 04, 2018 at 02:55:33PM +0100, Mark Rutland wrote:
> In kcov_init_task() Since we update t->kcov_{mode,area,size} with plain
> stores, which may be re-ordered, torn, etc. Thus
> __sanitizer_cov_trace_pc() may see bogus values for any of these fields,
> and may attempt to write to memory which is not mapped.

Whoops; that 'Since' shuoldn't be there. I've fixed this up locally.

Mark.

  reply	other threads:[~2018-05-04 14:56 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-04 13:55 [PATCH 0/3] kcov: fix unexpected faults Mark Rutland
2018-05-04 13:55 ` [PATCH 1/3] kcov: ensure irq code sees a valid area Mark Rutland
2018-05-04 14:56   ` Mark Rutland [this message]
2018-05-04 13:55 ` [PATCH 2/3] kcov: prefault the kcov_area Mark Rutland
2018-05-04 14:36   ` Andrey Ryabinin
2018-05-04 14:38     ` Mark Rutland
2018-05-04 14:42       ` Andrey Ryabinin
2018-05-08 22:51   ` Andrew Morton
2018-05-09  9:41     ` Mark Rutland
2018-05-04 13:55 ` [PATCH 3/3] sched/core / kcov: avoid kcov_area during task switch Mark Rutland
2018-05-04 14:32   ` Andrey Ryabinin
2018-05-04 14:36     ` Mark Rutland

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