From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F4B7C43381 for ; Thu, 21 Mar 2019 06:08:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 583DE218D3 for ; Thu, 21 Mar 2019 06:08:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726523AbfCUGIJ (ORCPT ); Thu, 21 Mar 2019 02:08:09 -0400 Received: from mx2.suse.de ([195.135.220.15]:46860 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725800AbfCUGIJ (ORCPT ); Thu, 21 Mar 2019 02:08:09 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 171D3AFF1; Thu, 21 Mar 2019 06:08:08 +0000 (UTC) From: NeilBrown To: syzbot , bfields@fieldses.org, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Date: Thu, 21 Mar 2019 17:07:59 +1100 Subject: Re: general protection fault in __x86_indirect_thunk_rbx In-Reply-To: <000000000000b3976c0584940e6e@google.com> References: <000000000000b3976c0584940e6e@google.com> Message-ID: <87lg187oao.fsf@notabene.neil.brown.name> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org --=-=-= Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Wed, Mar 20 2019, syzbot wrote: > syzbot has bisected this bug to: > > commit dee160df820de41ff2f59a715643680822a0ab06 > Author: NeilBrown > Date: Mon Nov 5 01:30:47 2018 +0000 > > locks: use properly initialized file_lock when unlocking. This commit did not make it to mainline. It was replaced by Commit d6367d624137 ("fs/locks: use properly initialized file_lock when unl= ocking.") which added a call to locks_init_lock() in flock_make_lock(). NeilBrown > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=3D13f39fd720= 0000 > start commit: dee160df locks: use properly initialized file_lock when u= n.. > git tree: linux-next > final crash: https://syzkaller.appspot.com/x/report.txt?x=3D100b9fd720= 0000 > console output: https://syzkaller.appspot.com/x/log.txt?x=3D17f39fd7200000 > kernel config: https://syzkaller.appspot.com/x/.config?x=3Dcaa433e1c8778= 437 > dashboard link: https://syzkaller.appspot.com/bug?extid=3D83e12cf81d2c148= 42146 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=3D15bd9447400= 000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=3D1121d82b400000 > > Reported-by: syzbot+83e12cf81d2c14842146@syzkaller.appspotmail.com > Fixes: dee160df ("locks: use properly initialized file_lock when=20=20 > unlocking.") --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEG8Yp69OQ2HB7X0l6Oeye3VZigbkFAlyTKkAACgkQOeye3VZi gbne0hAAqYfEfGRgEWYgVOZtRJTccuuxkZBfdZwp07Xn2L8Jq9ypS/6esIlXm1WT 9WlfcA+812/Tsucz19qISeIhCPkntvvofglJWZRXrQANhQwm7spGHzQ9A2hnYrCq CmlnSuFYYCkDWLETpeoIAlMDelGFBP0lJqr4YpQz8+29RqWk5+/Dya6gDeynFivx OHNhZ7Fr7juIa6LwtLZFbPdnpVGAzXVPAP6Uy4irBPrnvoHqloQkhao73tlid+GT d5IgEzq2QezLXXNXMrC02IAP59/CvTHS0Wp8KE5KxjfG7ztTbwNWDtTSRY7LKWmD VMPvwdHzDh+7yp6iZjwGvTftxTbLOhRBhu5+IYvG07KxaCZhgSUW0ApnK3H4K8ER KEHQeGG3NhqHeSIaKcRWNwCyADpmWTIcrGjqU2OFM5MBk3Gu+kb7rel3iVXiACW1 i8XseGhzF2odCSo8ucRNIbhPgO0dWdLYFsCUwJP7JS5K9QFemsx/00uc38y0a6iW ouduTKG3Obedd2VOEan8XAPQNgHtNLTKPiGGtK//C+4FyUxEfD8D6yTwE8kgRcbo dAhJe2uTE3nMpsvVqIdk/f0E2lCZJO3MfVfH44nbwpIUTH13c50VDRUlugz6JFoe NDOOGMkXvzGjRmVWTifQ6JetMopS1VuH0T5TZqjbqXgzap381Ns= =d21Y -----END PGP SIGNATURE----- --=-=-=--