linux-kernel - Re: [PATCH] gcov: fix memory allocation problem in gcov_info

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Message-ID: <530470E4.2040104@linux.vnet.ibm.com>
Date:	Wed, 19 Feb 2014 09:52:52 +0100
From:	Peter Oberparleiter <oberpar@...ux.vnet.ibm.com>
To:	Yuan Pengfei <coolypf@...com>
CC:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gcov: fix memory allocation problem in gcov_info_dup

On 19.02.2014 08:06, Yuan Pengfei wrote:
> From: Yuan Pengfei <coolypf@...com>
> 
> If -fprofile-values option is used, ctr->num and sci_ptr->num
> may be zero, resulting in zero size and cv_size, which will
> cause ENOMEM when opening gcov data files in debugfs.
> Signed-off-by: Yuan Pengfei <coolypf@...com>

I'm unaware of any user of -fprofile-values in the kernel. Are you
trying to extend gcov-kernel to also support -fprofile-values? I would
expect that additional changes to the .gcda file creation logic are
required to fully support this GCC option.


Regards,
  Peter Oberparleiter

-- 
Peter Oberparleiter
Linux on System z Development - IBM Germany

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