From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephan =?ISO-8859-1?Q?M=FCller?= Subject: Re: general protection fault in crypto_remove_spawns Date: Tue, 28 Nov 2017 23:06:18 +0100 Message-ID: <2621541.YkCu9MsXr4@positron.chronox.de> References: <001a1141c43ad30ccf055efb76ed@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Cc: syzbot , davem@davemloft.net, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com To: herbert@gondor.apana.org.au Return-path: Received: from mail.eperm.de ([89.247.134.16]:42594 "EHLO mail.eperm.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750904AbdK1WGV (ORCPT ); Tue, 28 Nov 2017 17:06:21 -0500 In-Reply-To: <001a1141c43ad30ccf055efb76ed@google.com> Sender: linux-crypto-owner@vger.kernel.org List-ID: Am Montag, 27. November 2017, 19:56:46 CET schrieb syzbot: Hi Herbert, The issue seems to trigger a bug whose results we have seen before. When starting the reproducer and stopping it shortly thereafter, I see the numerous identical entries in /proc/crypto: name : cmac(des3_ede) driver : cmac(des3_ede-asm) module : kernel priority : 200 refcnt : 1 selftest : passed internal : no type : shash blocksize : 8 digestsize : 8 name : cmac(des3_ede) driver : cmac(des3_ede-asm) module : kernel priority : 200 refcnt : 1 selftest : passed internal : no type : shash blocksize : 8 digestsize : 8 name : cmac(des3_ede) driver : cmac(des3_ede-asm) module : kernel priority : 200 refcnt : 1 selftest : passed internal : no type : shash blocksize : 8 digestsize : 8 ... And this list keeps on growing without end: # ./repro # less /proc/crypto | wc 9559 26456 188754 # ./repro # less /proc/crypto | wc 11440 31586 226032 At one point in time I think the system simply has too many entries. Ciao Stephan