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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 811D0C072A2 for ; Fri, 17 Nov 2023 08:49:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345713AbjKQItK (ORCPT ); Fri, 17 Nov 2023 03:49:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230383AbjKQItI (ORCPT ); Fri, 17 Nov 2023 03:49:08 -0500 Received: from mail-pg1-f198.google.com (mail-pg1-f198.google.com [209.85.215.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 025281A1 for ; Fri, 17 Nov 2023 00:49:05 -0800 (PST) Received: by mail-pg1-f198.google.com with SMTP id 41be03b00d2f7-5bddc607b45so2263616a12.0 for ; Fri, 17 Nov 2023 00:49:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700210944; x=1700815744; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=5Ym+eEngmFhnbHeC4nMT4pNbV5P6+1WlnQaLhNaxmSE=; b=rpzm6iOVeJWVRJV9sYpfoIt/yuXvKfYk/E5imiCGOJaP5KpaGefujPR413NEsuXiNJ Zf9mG4J9DLF1mu46CxYTMv8UN1TV8EspbR8ZjEhMqgt78QGPw9yu5dnPvrxwCOcTaME5 agq3lkud8Q2dhMGXZTNuhOVh56GlqHw0Q7i2w1c0yc5/HZgkkKLA6IvJE0U2pj4XVA4D qw94GFa7+Zt4ukdBEccxEJiODGQl47w+IMOvO+PKlxEXohK+Nio/VShrc9SeAxG6QN5J RP1iQJTzWRx2RPi4/a/jwWDU2yMkcNuqk4eiblUuVteL0RN4EYzGL98INrO15b3nBjfD /vdA== X-Gm-Message-State: AOJu0Yz/XVjvGTCDxaxad9oHhg8GsWPfZF9z6bJ4w827LIL4hhfYyqaS tx2B4dzpvYrejE+KIbXzZnyBEdhXE9wDWJ2a801tJ5GxwR2O X-Google-Smtp-Source: AGHT+IH00GIpXJ0tra0/kHyJUpp48mrBTXuig30wf7+4zNGKw8bEou2RIeIVqr7zj6SvjMo8V1uF+uaf7R8M2SYiSNdF/Vvu6IhO MIME-Version: 1.0 X-Received: by 2002:a65:414a:0:b0:5bd:57e3:d89f with SMTP id x10-20020a65414a000000b005bd57e3d89fmr929288pgp.8.1700210944552; Fri, 17 Nov 2023 00:49:04 -0800 (PST) Date: Fri, 17 Nov 2023 00:49:04 -0800 In-Reply-To: <000000000000a25ea7060a430d3c@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000064b787060a55354e@google.com> Subject: Re: [syzbot] [kernel?] inconsistent lock state in ptrace_attach From: syzbot To: boqun.feng@gmail.com, brauner@kernel.org, linux-kernel@vger.kernel.org, longman@redhat.com, michael.christie@oracle.com, mingo@redhat.com, mst@redhat.com, oleg@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, wander@redhat.com, will@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit 2d25a889601d2fbc87ec79b30ea315820f874b78 Author: Peter Zijlstra Date: Sun Sep 17 11:24:21 2023 +0000 ptrace: Convert ptrace_attach() to use lock guards bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=132b7d84e80000 start commit: f31817cbcf48 Add linux-next specific files for 20231116 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=10ab7d84e80000 console output: https://syzkaller.appspot.com/x/log.txt?x=172b7d84e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=f59345f1d0a928c dashboard link: https://syzkaller.appspot.com/bug?extid=cbb25bb9b4d29a773985 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1014d797680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11b1ec67680000 Reported-by: syzbot+cbb25bb9b4d29a773985@syzkaller.appspotmail.com Fixes: 2d25a889601d ("ptrace: Convert ptrace_attach() to use lock guards") For information about bisection process see: https://goo.gl/tpsmEJ#bisection