From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (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 647702F43 for ; Wed, 2 Oct 2024 04:48:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727844484; cv=none; b=NWOTxkE4fJCu6M05J0Lhs/R9/kSDU/RHPNF8rkiFC8Z8ADjt9pI5KYVOMh0bqsYyysC/V4JsWhB9n5fnyFPFrNRoMUvgMWfYlsYlgInSMu/QxJfKXxgrJeQmVpFdCKQoH5MGkaYDU6b5ZZTV/Y5lDgRmDPmqwuM9SdttE8TPpOY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727844484; c=relaxed/simple; bh=XdD+s2RdLLsUwBMuDyC5i8HugsB7+818y3B258LuaLQ=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=pSHzmwo/MASJSpUoLfvnfoFk90eqohL3Ry1CcGBxsz9OUISx31HAJg+LR7yEcaLiE/ZjcR5GtinDdIZCeNBsIZBRICp23hr0mrDu+kIPakyPtRtLbtDLT8f04wrJmL6t7GDGCjWJLVsS7xuXchz8OBJi3F5l4RLsfrdozCknxWg= 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=209.85.166.199 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-il1-f199.google.com with SMTP id e9e14a558f8ab-3a34eef9ec9so36185135ab.0 for ; Tue, 01 Oct 2024 21:48:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727844482; x=1728449282; 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=fc168hZ2il4XJagXeLnymEHZP5G4vz6v+AEvsjxd2XM=; b=eek03D7snlDziFcWFcHuispiyPG1Cz2ZAOwJTVuyVXI/4zKltbG6Puw23joHNngWsT ti1e23tW3dhS87lFYtzdFHFZnMcq/FSbDUsQwo3JzQSHA1gmnhvK7+hqiJ68ULSNANIj jS45YxZkg+UCK/7w3afUwO76hYuThu+IJDQEQApRviacGe9gf+WvS4xPOlQtTCgVx6Ox 6QGkqnQcmPFNXLRKg+OrzrdDM1R2O0cF61DXmLl0BpGfT7FAptAtlu4q6f2h42q+GcBg IhamRS0LDZ4wvPpSt+gdwSRAs6k0sFhhQIY7Fy0bhwFQmu4BCQAFRKRK7vnJh5vX3l9o IU4w== X-Forwarded-Encrypted: i=1; AJvYcCWBbxsQcL9CcibzGvNgH5gAe69rxFIKxV08TcyihcRu3rvbv4OtEzdzZVmQIhC0f1VR/pVAhMQem8O8sv0=@vger.kernel.org X-Gm-Message-State: AOJu0YwHyrGo+DH5I1YeTgtgcbfkWyl9Yoeb+LNAKHpGQc/v91c8bIJd Z32Mf+mhYXR8g0e/T48/JHL/qa+kiM6X9cf9SVl6fdZXHBTjnCidnV22XEhTHNjZox1F4qnP6Qc BKkL4+8dPDurKbLfau3VYAdLypQqwhOK12ZQtoMlpYy7C51b5KUgQHc8= X-Google-Smtp-Source: AGHT+IG931L37l/psY99tEAyVg5MhvA8BtPGY62t5Px/Kn/GWzYiBPuQW24AKFLByCrHRwXw5d5m+sd1HBcW9JXpQiuc5N0HgoHU Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1e0d:b0:3a3:49f0:f425 with SMTP id e9e14a558f8ab-3a3658b83d8mr21328205ab.0.1727844482521; Tue, 01 Oct 2024 21:48:02 -0700 (PDT) Date: Tue, 01 Oct 2024 21:48:02 -0700 In-Reply-To: <66f8846e.050a0220.aab67.000b.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <66fcd082.050a0220.f28ec.04f1.GAE@google.com> Subject: Re: [syzbot] [mm?] possible deadlock in upgrade_mmap_lock_carefully From: syzbot To: akpm@linux-foundation.org, ebpqwerty472123@gmail.com, hughd@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, paul@paul-moore.com, stephen.smalley.work@gmail.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit ea7e2d5e49c05e5db1922387b09ca74aa40f46e2 Author: Shu Han Date: Tue Sep 17 09:41:04 2024 +0000 mm: call the security_mmap_file() LSM hook in remap_file_pages() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1530539f980000 start commit: e32cde8d2bd7 Merge tag 'sched_ext-for-6.12-rc1-fixes-1' of.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=1730539f980000 console output: https://syzkaller.appspot.com/x/log.txt?x=1330539f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=286b31f2cf1c36b5 dashboard link: https://syzkaller.appspot.com/bug?extid=a6456f6334aa19425886 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=154e8927980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1244bdd0580000 Reported-by: syzbot+a6456f6334aa19425886@syzkaller.appspotmail.com Fixes: ea7e2d5e49c0 ("mm: call the security_mmap_file() LSM hook in remap_file_pages()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection