Re: struct pid memory leak
From: Willy Tarreau
Date: Sat Jan 23 2016 - 13:03:43 EST
Hi Eric, Dmitry,
On Fri, Jan 22, 2016 at 08:50:01AM -0800, Eric Dumazet wrote:
> CC netdev, as it looks some af_unix issue ...
>
> On Fri, 2016-01-22 at 16:08 +0100, Dmitry Vyukov wrote:
> > Hello,
> >
> > The following program causes struct pid memory leak:
> >
> > // autogenerated by syzkaller (http://github.com/google/syzkaller)
(...)
> > unreferenced object 0xffff8800324af200 (size 112):
> > comm "syz-executor", pid 18413, jiffies 4295500287 (age 14.321s)
> > hex dump (first 32 bytes):
> > 01 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 ................
> > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> > backtrace:
> > [<ffffffff86315673>] kmemleak_alloc+0x63/0xa0 mm/kmemleak.c:916
> > [< inline >] kmemleak_alloc_recursive include/linux/kmemleak.h:47
(...)
> > On commit 30f05309bde49295e02e45c7e615f73aa4e0ccc2 (Jan 20).
I can't reproduce this with the indicated commit. I'm unsure how/what
I'm supposed to see. Is a certain config needed ? I've enabled kmemleak
in my .config but there are too few information here to go further
unfortunately.
Regards,
Willy