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=-13.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL autolearn=no 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 CF748C433DB for ; Mon, 11 Jan 2021 09:17:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 93AAC2068D for ; Mon, 11 Jan 2021 09:17:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728410AbhAKJQw (ORCPT ); Mon, 11 Jan 2021 04:16:52 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55096 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728320AbhAKJQv (ORCPT ); Mon, 11 Jan 2021 04:16:51 -0500 Received: from mail-qk1-x735.google.com (mail-qk1-x735.google.com [IPv6:2607:f8b0:4864:20::735]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1BCFC061795 for ; Mon, 11 Jan 2021 01:16:10 -0800 (PST) Received: by mail-qk1-x735.google.com with SMTP id c7so14055362qke.1 for ; Mon, 11 Jan 2021 01:16:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=fU7GH9LhkO3q58rwtJyvkvBoIzpRxN+MgLow1nbzzOs=; b=KV/W4TkVDv1dKMb+PQGRb4AZX/A7K1VuhTBpyuxT4wHjHJisP09LZdYiFhCWYD/dOR 3OItl1/pOUZ5jeEvWZcXecEiqlQRDeWr/DcBV13JEckh8dzP0n74k5acinDTieaf/4y/ 4kNFVyX4Ps/idfQgk9zZF4/ndeXz3r6k5lT3NYqWC1lRsL0/B1I6Wiop5IAmeZ9eiemp xWd6z+xtdazwE+03DJOp+jhaJPsZxxLIBvvkDSYIwjoVGlmWqLdlDC0/vovsapxVKSwm QHzpEzP2J01MTb6wm6kn7HKM3ihdG6WMVzuhvn/jkq30a4vcaXVgdwM2zIsajjB3/jqY V+LQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=fU7GH9LhkO3q58rwtJyvkvBoIzpRxN+MgLow1nbzzOs=; b=Ve/GKOmFukOYnobw8PnvWUN0yvksiDsNw0ZYv443hrmoXhZvrIqa+HdTeV9KX5mmN3 deaegovCqERA9Axl9DrA5NXS7S9Bn75LIis4zv8fZyTKp3IP+sVFOgMeHGnw13vlKAbB 2oGaKlfsTNcUlDVJqxsFCqVajN7KAyhPc7Mq+SyCmAJMgPPm9GROLBxKxgbObODrjYu0 F617LeqapmXLzDT5LBEust+jzmliEZUW9P0uMuMspJTZHkrS7CNePq0fHzJioRkBt2hC bINnp2Ei5BXrDisw1wmK/JvA1L6usozxkKvkDJCSbRgnuVkwQ9HIPBfHc6+ZF8eLk1/N iL4Q== X-Gm-Message-State: AOAM530OwU2HMKgRMyLspZ5k2XAkGMnaa2JpOy6k/PxQMrvjM3mY30wu EydAUylvBE1ApT0tAnkZNnXPdndyOYVMgK/3sHl/TQ== X-Google-Smtp-Source: ABdhPJwbbIjmwetHH0GCBp0TCjbgD7zj06OWKV6/f1Ysv0jMf+ZhAh+8kUwh/YJDM+J6eaRv2DGqE8kYHyTUtYEm4DY= X-Received: by 2002:a05:620a:713:: with SMTP id 19mr15861120qkc.424.1610356569698; Mon, 11 Jan 2021 01:16:09 -0800 (PST) MIME-Version: 1.0 References: <000000000000588c2c05aa156b2b@google.com> <00000000000087569605b8928ce3@google.com> In-Reply-To: <00000000000087569605b8928ce3@google.com> From: Dmitry Vyukov Date: Mon, 11 Jan 2021 10:15:58 +0100 Message-ID: Subject: Re: kernel BUG at mm/vmalloc.c:LINE! (2) To: syzbot Cc: Andrew Morton , andrii@kernel.org, Alexei Starovoitov , =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , Borislav Petkov , bpf , Daniel Borkmann , Dave Hansen , David Miller , Jesper Dangaard Brouer , "H. Peter Anvin" , John Fastabend , jonathan.lemon@gmail.com, Martin KaFai Lau , KP Singh , Jakub Kicinski , LKML , Linux-MM , Andy Lutomirski , "Karlsson, Magnus" , marekx.majtyka@intel.com, Ingo Molnar , Ingo Molnar , netdev , Peter Zijlstra , Song Liu , syzkaller-bugs , Thomas Gleixner , "the arch/x86 maintainers" , Yonghong Song Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jan 10, 2021 at 10:34 PM syzbot wrote: > > syzbot suspects this issue was fixed by commit: > > commit 537cf4e3cc2f6cc9088dcd6162de573f603adc29 > Author: Magnus Karlsson > Date: Fri Nov 20 11:53:39 2020 +0000 > > xsk: Fix umem cleanup bug at socket destruct > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=139f3dfb500000 > start commit: e87d24fc Merge branch 'net-iucv-fixes-2020-11-09' > git tree: net > kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff > dashboard link: https://syzkaller.appspot.com/bug?extid=5f326d255ca648131f87 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d10006500000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=126c9eaa500000 > > If the result looks correct, please mark the issue as fixed by replying with: > > #syz fix: xsk: Fix umem cleanup bug at socket destruct > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection FTR, the bisection log looks clean, but this does not look like the fix for this. The reproducer does not destroy sockets.