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 30075C197A0 for ; Fri, 17 Nov 2023 17:44:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346153AbjKQRoL (ORCPT ); Fri, 17 Nov 2023 12:44:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232631AbjKQRoJ (ORCPT ); Fri, 17 Nov 2023 12:44:09 -0500 Received: from mail-pj1-f70.google.com (mail-pj1-f70.google.com [209.85.216.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2E20710D0 for ; Fri, 17 Nov 2023 09:44:06 -0800 (PST) Received: by mail-pj1-f70.google.com with SMTP id 98e67ed59e1d1-2803ea89cefso2892643a91.2 for ; Fri, 17 Nov 2023 09:44:06 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700243045; x=1700847845; 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=tBNIQ0OyWnUUYf+IOMPIqQdftw554+6MI/vYVRG86Dc=; b=fl5mfSmUtKBGyaz7MNySsMK2wfUuoGA/g3bkZWOc0tBvGW3rwk8/inmn3dHgnd7bLf AvKkMtiP2rC3aW2uRY2ky6WHkdfs5eWEzxmgC5M1XiITs/viSBH/ON1vh0LHlZQrvmrl /Krzjucg2r/qHfhXQjUfFIxQX9FPiRkEAsU4JveGmy/5S5ge7H2VXplF9o10eaKc2EGh Av2EG6PslJuFgC7jU60UJsaiXHmnIIrwVkrmITCHeFIGhActHzxlGy5QcUo9mHTUM5Ol Qy+aBOQYiwGhLlB8gYzy75f2TOWhTcSaR7zta8tpDx0EL/+C6/4Yul/Ul2Wl2HQxGEly 9eOQ== X-Gm-Message-State: AOJu0Yy0dTlPQN1MzsFdPsPFpD4sKFG2+ZhhnVMrJhf+aPjhO8GCh4rD frVs1X2a3GXCeePutpEsmoEweciu04pox222cgUw3TizXIL2 X-Google-Smtp-Source: AGHT+IEGvinZzZUXWT8Abzqsa0MheB9XXEtJaQ6LA8XenYwwcXM2fxrpX1ls5/LOD52S1ncv/pPluiYNAaA8RLBBOot8+6XLgCqU MIME-Version: 1.0 X-Received: by 2002:a17:90a:be03:b0:27c:f438:70a4 with SMTP id a3-20020a17090abe0300b0027cf43870a4mr26773pjs.5.1700243045768; Fri, 17 Nov 2023 09:44:05 -0800 (PST) Date: Fri, 17 Nov 2023 09:44:05 -0800 In-Reply-To: <0000000000009cd5bc060a430d80@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c667ce060a5cae75@google.com> Subject: Re: [syzbot] [kernel?] inconsistent lock state in __lock_task_sighand From: syzbot To: andrii@kernel.org, ast@kernel.org, boqun.feng@gmail.com, bpf@vger.kernel.org, brauner@kernel.org, daniel@iogearbox.net, haoluo@google.com, john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, longman@redhat.com, martin.lau@linux.dev, mhiramat@kernel.org, michael.christie@oracle.com, mingo@redhat.com, mst@redhat.com, oleg@redhat.com, peterz@infradead.org, rostedt@goodmis.org, sdf@google.com, song@kernel.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, wander@redhat.com, will@kernel.org, yonghong.song@linux.dev 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=144ac400e80000 start commit: f31817cbcf48 Add linux-next specific files for 20231116 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=164ac400e80000 console output: https://syzkaller.appspot.com/x/log.txt?x=124ac400e80000 kernel config: https://syzkaller.appspot.com/x/.config?x=f59345f1d0a928c dashboard link: https://syzkaller.appspot.com/bug?extid=cf93299f5a30fb4c3829 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=125ac3c0e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12c4d797680000 Reported-by: syzbot+cf93299f5a30fb4c3829@syzkaller.appspotmail.com Fixes: 2d25a889601d ("ptrace: Convert ptrace_attach() to use lock guards") For information about bisection process see: https://goo.gl/tpsmEJ#bisection