From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755691Ab3GUPMG (ORCPT ); Sun, 21 Jul 2013 11:12:06 -0400 Received: from shelob.oktetlabs.ru ([195.131.132.186]:36007 "EHLO shelob.oktetlabs.ru" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1755595Ab3GUPME (ORCPT ); Sun, 21 Jul 2013 11:12:04 -0400 X-DKIM: Sendmail DKIM Filter v2.8.2 shelob.oktetlabs.ru 3DC717F4E6 Date: Sun, 21 Jul 2013 19:11:51 +0400 From: "Alexandra N. Kossovsky" To: Peter Jones , Jean-Christophe Plagniol-Villard , Tomi Valkeinen , linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: kmemleak warning in efifb_probe Message-ID: <20130721151151.GK24717@sanechka.spb.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello. I am running linux-3.10.0 with kmemleak and see following warnings in /sys/kernel/debug/kmemleak: unreferenced object 0xffff880216fcfe00 (size 512): comm "swapper/0", pid 1, jiffies 4294895429 (age 1415.320s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 aa aa aa aa aa aa aa aa ................ 55 55 55 55 55 55 55 55 ff ff ff ff ff ff ff ff UUUUUUUU........ backtrace: [] kmemleak_alloc+0x21/0x3e [] kmemleak_alloc_recursive.constprop.57+0x16/0x18 [] __kmalloc+0xf9/0x144 [] fb_alloc_cmap_gfp+0x47/0xe1 [] fb_alloc_cmap+0xe/0x10 [] efifb_probe+0x3e9/0x48f [] platform_drv_probe+0x34/0x5e [] driver_probe_device+0x98/0x1b4 [] __driver_attach+0x4e/0x6f [] bus_for_each_dev+0x57/0x8a [] driver_attach+0x19/0x1b [] bus_add_driver+0xde/0x201 [] driver_register+0x8c/0x110 [] platform_driver_register+0x41/0x43 [] platform_driver_probe+0x18/0x8a [] efifb_init+0x276/0x295 unreferenced object 0xffff880205e90e00 (size 512): comm "swapper/0", pid 1, jiffies 4294895429 (age 1415.320s) hex dump (first 32 bytes): 00 00 00 00 aa aa aa aa 00 00 00 00 55 55 aa aa ............UU.. 55 55 55 55 ff ff ff ff 55 55 55 55 ff ff ff ff UUUU....UUUU.... backtrace: [] kmemleak_alloc+0x21/0x3e [] kmemleak_alloc_recursive.constprop.57+0x16/0x18 [] __kmalloc+0xf9/0x144 [] fb_alloc_cmap_gfp+0x62/0xe1 [] fb_alloc_cmap+0xe/0x10 [] efifb_probe+0x3e9/0x48f [] platform_drv_probe+0x34/0x5e [] driver_probe_device+0x98/0x1b4 [] __driver_attach+0x4e/0x6f [] bus_for_each_dev+0x57/0x8a [] driver_attach+0x19/0x1b [] bus_add_driver+0xde/0x201 [] driver_register+0x8c/0x110 [] platform_driver_register+0x41/0x43 [] platform_driver_probe+0x18/0x8a [] efifb_init+0x276/0x295 unreferenced object 0xffff880205e91e00 (size 512): comm "swapper/0", pid 1, jiffies 4294895429 (age 1415.320s) hex dump (first 32 bytes): 00 00 aa aa 00 00 aa aa 00 00 aa aa 00 00 aa aa ................ 55 55 ff ff 55 55 ff ff 55 55 ff ff 55 55 ff ff UU..UU..UU..UU.. backtrace: [] kmemleak_alloc+0x21/0x3e [] kmemleak_alloc_recursive.constprop.57+0x16/0x18 [] __kmalloc+0xf9/0x144 [] fb_alloc_cmap_gfp+0x76/0xe1 [] fb_alloc_cmap+0xe/0x10 [] efifb_probe+0x3e9/0x48f [] platform_drv_probe+0x34/0x5e [] driver_probe_device+0x98/0x1b4 [] __driver_attach+0x4e/0x6f [] bus_for_each_dev+0x57/0x8a [] driver_attach+0x19/0x1b [] bus_add_driver+0xde/0x201 [] driver_register+0x8c/0x110 [] platform_driver_register+0x41/0x43 [] platform_driver_probe+0x18/0x8a [] efifb_init+0x276/0x295 unreferenced object 0xffff880205e942e0 (size 32): comm "swapper/0", pid 1, jiffies 4294895429 (age 1415.344s) hex dump (first 32 bytes): 00 01 10 00 00 00 ad de 00 02 20 00 00 00 ad de .......... ..... 00 2c e9 05 02 88 ff ff 01 5a 5a 5a 5a 5a 5a a5 .,.......ZZZZZZ. backtrace: [] kmemleak_alloc+0x21/0x3e [] kmemleak_alloc_recursive.constprop.57+0x16/0x18 [] kmem_cache_alloc_trace+0xe6/0x12e [] pm_vt_switch_required+0x54/0x86 [] register_framebuffer+0x1e0/0x294 [] efifb_probe+0x408/0x48f [] platform_drv_probe+0x34/0x5e [] driver_probe_device+0x98/0x1b4 [] __driver_attach+0x4e/0x6f [] bus_for_each_dev+0x57/0x8a [] driver_attach+0x19/0x1b [] bus_add_driver+0xde/0x201 [] driver_register+0x8c/0x110 [] platform_driver_register+0x41/0x43 [] platform_driver_probe+0x18/0x8a [] efifb_init+0x276/0x295 Feel free to ask for more info about my system; I can also try a patch. -- Alexandra N. Kossovsky OKTET Labs (http://www.oktetlabs.ru/) e-mail: sasha@oktetlabs.ru