Subject: Re: [PATCH 42/53] perf record: Prevent reading invalid data in record__mmap_read

From: Arnaldo Carvalho de Melo <[email-masked]>
Date: Mon, 11 Jan 2016 13:00:07 -0200

Em Mon, Jan 11, 2016 at 05:21:44PM +0300, Sergei Shtylyov escreveu:
> On 01/11/2016 04:48 PM, Wang Nan wrote:
> >  	size = head - old;
> >+	if (size > (unsigned long)(md->mask) + 1) {
> >+		WARN_ONCE(1, "WARNING: failed to keep up with mmap data. (warn only once)\n");
> 
>    WARNING is already printed by WARN*(), no?

No, at least not in tools/include/asm/bug.h, perhaps include/asm/bug.h
has this now and tools/ drifted? Checking now...

- Arnaldo