From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3CA396AB9 for ; Thu, 25 Jul 2024 01:01:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721869263; cv=none; b=TWGKAUHe+SpxgTSWLQI9hFf3MUJGxxKCDJaOCOkx0aU2h/nlA57okeYtn9EXyOCU0bTY577/sY+cbppdoYoDMZpSMp28ivueLWN0Yj6wbAMh806iBh+uDMhE1mkkeFthiKTavBGOGEaGo0dUTNPUQVpPWPmFdPU/QxyfHF9Z8eI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721869263; c=relaxed/simple; bh=8kk3Te+qLD44IUgYtWzAUtOnPox3lN0OuDxugG5oUXc=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=ZHe63GSpTDDV78mPJr9gKZGqdhrVL0W4fere91ba23GB3DnbIh1Q3Sbv5/HJpu328co5dOA2JO2mcZ57uh69nEUeWUkPxGrdPvriSANU9gxJLu57PbJ39O2EFFwyuI77TqskZum8kRDJuL6mjOdHKtw/QMi3iec/hcq5PxZRGTY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-8041a66f2ebso61031439f.1 for ; Wed, 24 Jul 2024 18:01:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721869261; x=1722474061; 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=X8irUD+IVqNvyfrm7fkCMoY6zNVcVbkqgFP/xxoo9XY=; b=vK3uQ33gPGXQDa6M4VadAdZ72U//XbYdNiQRSQVKhjDYhMVmod6il33FBB1wDY63nK v51KF5UEGsXcUY+hPxzrr+jQTE31D2CeGCOKGh45RIYh2rBXImJxXIoaNGQDJWxO+AD4 MawqhvbZCFRa8h3sQjO3BaQG+wvFqOJ1bRMp/D55XGhUFZ4xS0iKiuUx7xFr0H5ABRt0 L+7yFgPTIE/fp9dBAAp3+Ixpr5fcSiKC1aX17JaUmdLR68/7cyr21Bc1ROI0PNSES8kx FARY7y1PD1Z2Z5ZpuglMTQyyvIYcmqfpuZY+Ptzaqo7S19MMdOUoK5jqLYNuwIyqN4TY TWfQ== X-Forwarded-Encrypted: i=1; AJvYcCWtGXkk8x32rI9xM35nHLRJYTgvUslxA8Mwr4d71vKKnXWlEqI0BKfgZp1pR0wuiUjfrbmS+SUBoQCtzFXmUckwR1HczVhmctKeqQlI X-Gm-Message-State: AOJu0YyheG1ApwbDOrd0xiltb92uZIYw1N647Ke9v93h0Ne96TKGrP+2 Dn6w6qorIjgkAiAtdYNDk1Uh8WWKKlEyH49CyJoJenjq3i3wBzWkCE3OCpyH6u+ZeK3DYqN4+ZE b2R6lZ/zqyAsQnkuVd8oWMfatX7b3sXB0Z9kPT6ODdmD4EHSNkcGWuz0= X-Google-Smtp-Source: AGHT+IEXAbpwASAdyHqialMw4BQ4JlpFFb82Tnj7Ly4W1eqe/AyPidKj5296l4HTxxvvEMhO9QlR6QmFXYJ5PRvV0GhPaFTj0yOa Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a6b:4419:0:b0:809:488:97f with SMTP id ca18e2360f4ac-81f7e4fc4e8mr427639f.4.1721869261495; Wed, 24 Jul 2024 18:01:01 -0700 (PDT) Date: Wed, 24 Jul 2024 18:01:01 -0700 In-Reply-To: <0000000000006bca48061692b790@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ae7466061e07ed39@google.com> Subject: Re: [syzbot] [mm?] possible deadlock in gup_fast_fallback From: syzbot To: akpm@linux-foundation.org, almaz.alexandrovich@paragon-software.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit 69505fe98f198ee813898cbcaf6770949636430b Author: Konstantin Komarov Date: Thu May 30 07:54:07 2024 +0000 fs/ntfs3: Replace inode_trylock with inode_lock bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=157ffac9980000 start commit: 786c8248dbd3 Merge tag 'perf-tools-fixes-for-v6.11-2024-07.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=177ffac9980000 console output: https://syzkaller.appspot.com/x/log.txt?x=137ffac9980000 kernel config: https://syzkaller.appspot.com/x/.config?x=d732ba79a3d0331b dashboard link: https://syzkaller.appspot.com/bug?extid=63ba90b81c16b86379bd syz repro: https://syzkaller.appspot.com/x/repro.syz?x=162862e3980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10d14ce3980000 Reported-by: syzbot+63ba90b81c16b86379bd@syzkaller.appspotmail.com Fixes: 69505fe98f19 ("fs/ntfs3: Replace inode_trylock with inode_lock") For information about bisection process see: https://goo.gl/tpsmEJ#bisection