From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755757AbcHCPpV (ORCPT ); Wed, 3 Aug 2016 11:45:21 -0400 Received: from smtprelay0082.hostedemail.com ([216.40.44.82]:49755 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752653AbcHCPpS (ORCPT ); Wed, 3 Aug 2016 11:45:18 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 50,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::,RULES_HIT:41:69:355:379:541:599:800:960:965:966:967:973:988:989:1260:1263:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1541:1593:1594:1711:1730:1747:1777:1792:2196:2199:2393:2525:2553:2560:2563:2682:2685:2859:2901:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3352:3622:3865:3866:3867:3868:3870:3872:3873:3874:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:4385:4390:4395:5007:6261:6690:7576:7875:7903:8603:9025:10004:10400:10848:10967:11026:11232:11257:11658:11914:12043:12114:12291:12438:12517:12519:12555:12683:12740:12783:13069:13255:13311:13357:13439:14096:14097:14110:14181:14659:14721:21080:21088:30054:30055:30056:30070:30090:30091,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:4,LUA_SUMMARY:none X-HE-Tag: sugar48_10c50b8e1be5a X-Filterd-Recvd-Size: 2392 Date: Wed, 3 Aug 2016 11:45:13 -0400 From: Steven Rostedt To: Dmitry Vyukov Cc: LKML , Linus Torvalds , Ingo Molnar , Andrew Morton , Tom Zanussi Subject: Re: [PATCH 3/4] tracing: Fix use-after-free in hist_unreg_all/hist_enable_unreg_all Message-ID: <20160803114513.06cce48b@gandalf.local.home> In-Reply-To: References: <20160803135416.011514852@goodmis.org> <20160803135453.693053252@goodmis.org> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 3 Aug 2016 16:19:53 +0200 Dmitry Vyukov wrote: > On Wed, Aug 3, 2016 at 3:54 PM, Steven Rostedt wrote: > > From: Steven Rostedt > > > > While running tools/testing/selftests test suite with KASAN, Dmitry > > Vyukov hit the following use-after-free report: > > > > ================================================================== > > BUG: KASAN: use-after-free in hist_unreg_all+0x1a1/0x1d0 at addr > > ffff880031632cc0 > > Read of size 8 by task ftracetest/7413 > > ================================================================== > > BUG kmalloc-128 (Not tainted): kasan: bad access detected > > ------------------------------------------------------------------ > > > > This fixes the problem, along with the same problem in > > hist_enable_unreg_all(). > > > > Link: http://lkml.kernel.org/r/c3d05b79e42555b6e36a3a99aae0e37315ee5304.1467247517.git.tom.zanussi@linux.intel.com > > > > Cc: Dmitry Vyukov > > s/Cc/Reported-by/ please > Wish you posted that back when this was posted (see Link above). Because now it's in my git tree and tagged for Linus to pull. Too much work to rebase for a tag change :-/ -- Steve