linux-kernel - Possible memory leak in kernel/delayacct.c

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Message-ID: <b0943d9e0608190358i7cb93b75g1b52d2f1b7e6f1a@mail.gmail.com>
Date:	Sat, 19 Aug 2006 11:58:41 +0100
From:	"Catalin Marinas" <catalin.marinas@...il.com>
To:	"Shailabh Nagar" <nagar@...son.ibm.com>
Cc:	"Michal Piotrowski" <michal.k.k.piotrowski@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Possible memory leak in kernel/delayacct.c

Hi Shailabh,

Michal was running some kmemleak tests and there are about 20 orphan
pointers reported in delayacct.c. The allocation backtrace is:

orphan pointer 0xf548fde0 (size 76):
  c0174674: <kmem_cache_zalloc>
  c01591ee: <__delayacct_tsk_init>
  c0127e06: <copy_process>
  c0128cd2: <do_fork>
  c0104d39: <sys_clone>

I'm not sure whether the leak occurs but there might be a path where
task_struct is freed and the task->delays pointer is lost. Could you
please have a look at this? Thanks.

-- 
Catalin
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