lkml.org 
[lkml]   [2016]   [Nov]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] userns: suppress kmemleak message
On Wed, 2 Nov 2016 22:39:48 -0700, Dmitry Torokhov wrote:
> We do not ever intend to unregister "user" sysctl table, unfortunately
> it leads kmemleak to believe that we are leaking memory:
>
> unreferenced object 0xffff8807383bfd48 (size 96):
> comm "swapper/0", pid 1, jiffies 4294894636 (age 278.320s)
> hex dump (first 32 bytes):
> a0 b4 b0 ba ff ff ff ff 00 00 00 00 01 00 00 00 ................
> 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<ffffffffb7de59e8>] kmemleak_alloc+0x28/0x50
> [<ffffffffb676e2f6>] __kmalloc+0x206/0x5a0
> [<ffffffffb69be2d3>] __register_sysctl_table+0xb3/0x1130
> [<ffffffffb69bf36b>] register_sysctl+0x1b/0x20
> [<ffffffffba840de1>] user_namespace_sysctl_init+0x17/0x4c
> [<ffffffffb60022b7>] do_one_initcall+0xb7/0x2a0
> [<ffffffffba7eb102>] kernel_init_freeable+0x597/0x636
> [<ffffffffb7de0433>] kernel_init+0x13/0x140
> [<ffffffffb7dfb36a>] ret_from_fork+0x2a/0x40t show
> [<ffffffffffffffff>] 0xffffffffffffffff
>
> Let's annotate the pointer as kmemleak_not_leak() to suppress the
> kmemleak false positive.
>
> Reported-by: Jakub Kicinski <kubakici@wp.pl>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
>
> This was only compiled; Jakub, could you give it a spin?

Tested-by: Jakub Kicinski <jakub.kicinski@netronome.com>

Thanks!

\
 
 \ /
  Last update: 2016-11-03 15:05    [W:1.229 / U:0.256 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site