From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f205.google.com (mail-il1-f205.google.com [209.85.166.205]) (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 87B1D2E613A for ; Tue, 8 Jul 2025 17:52:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751997150; cv=none; b=BO5LRSvEX3mm274M7QJvLtKupHf3BVvwWI7UiWeRnbWVnXootlzdXIkl1yGwC6iyIcUYK38k5HcH622vg5M4FXxNeZTvNO3/EcLRuQqH6QXyACWRwxOi17WkDAsJirIXfYYomi9yMZuHbIddIqQvmagofw0UeTVJfUqVKqm+mqQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751997150; c=relaxed/simple; bh=CiJWS3iWVRrWIe11cv8KGCItiSrxDoGAUl/+0XJoNhU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=lccbLKd6HCzv+JjJNAz5mWCtee1lPvEyUTEG1PJKwO2H6FNT9L+gUBlsrG5713bRNtrklyHLTw0U2fpNSZUWgqf6ZUSGZOGkpkBV0Fh6dZzFFIhnnYT6bOlW6BSEQEZHzbSpsmzPOf6f1IMMl8/EXlDpEWX4RmQpY0JUUbgsCG4= 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=209.85.166.205 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-f205.google.com with SMTP id e9e14a558f8ab-3df2d0b7c7eso48365405ab.2 for ; Tue, 08 Jul 2025 10:52:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751997147; x=1752601947; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=eKUG9adbTZmFQWFPUi/8mG5E2xpUEJpWKtOgs6gtaqQ=; b=BoE2k7V7Q89KxDJVOiT11atwg2G6ZhIH3a8NThn3zr49wwuSyRUWPSPiPQkhNLpeZ+ I+SFZe+DCM4xK/3Iwqs9gCbS2MsQ0VKgxSiGUEruF7XIz0qVTezz+MMVXQJZcn+9oi51 3iZEs/kyvA++pVvzoCF8UBqjECN9PB832tCExoL0PjogYQHfZOLhlVZ0gXEsr15mJtEL P02qn/cnemIlaf48OVZxi4Q7CRkXuI+iUQU+nF6ur9HwEAnEePlyUtruuVe/UmDvKMcY 1itCowtnehVCaoI2LxRZxlKPcohYZofpdpqA2lHk/a+Kkaf0MhMVv7S1j46wDLE+N1rL uz4Q== X-Forwarded-Encrypted: i=1; AJvYcCUeeiNzMP9qqJjG4bBfSyhe69f2Kf010SW1XsLbsXQGQ/T91pbqyP20O20fqUW5Ale0NQ3x2ZbLg/hoEbo=@vger.kernel.org X-Gm-Message-State: AOJu0YweqUMa8QeP4T0/gTa4T4Z9fzn2cFEIYXv4dcglXJA2b4oo9KPD SY7IVpf9RUpp0DKELz8h/5+kWew6YVV7VKcBXHJHUj6xKThk5655WdzDrXAs6JbYEcAaTmZdlFg fdhdlO/rBlNK3fDO7XiOFgj7j0SnF8euVlS1CtallGgfcjhXi5AWgBiSF7Ac= X-Google-Smtp-Source: AGHT+IEq+VJkjYwGsXH4LRnEW+DIhvGlcjAN7Cu8iEz+fpCj1iU2sOPHvrSLjb/z95FC4i2tGqzc6fVKq8lqrJz55kTtXsm0nz3w Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2591:b0:3de:119f:5261 with SMTP id e9e14a558f8ab-3e136ea06f0mr150746675ab.3.1751997147432; Tue, 08 Jul 2025 10:52:27 -0700 (PDT) Date: Tue, 08 Jul 2025 10:52:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <686d5adb.050a0220.1ffab7.0019.GAE@google.com> Subject: [syzbot] [mm?] WARNING: lock held when returning to user space in lock_next_vma From: syzbot To: Liam.Howlett@oracle.com, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, shakeel.butt@linux.dev, surenb@google.com, syzkaller-bugs@googlegroups.com, vbabka@suse.cz Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 26ffb3d6f02c Add linux-next specific files for 20250704 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1719df70580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1e4f88512ae53408 dashboard link: https://syzkaller.appspot.com/bug?extid=80011ad33eec39e6ce42 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1124abd4580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1099df70580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/fd5569903143/disk-26ffb3d6.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1b0c9505c543/vmlinux-26ffb3d6.xz kernel image: https://storage.googleapis.com/syzbot-assets/9d864c72bed1/bzImage-26ffb3d6.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+80011ad33eec39e6ce42@syzkaller.appspotmail.com ================================================ WARNING: lock held when returning to user space! 6.16.0-rc4-next-20250704-syzkaller #0 Not tainted ------------------------------------------------ syz.0.22/6068 is leaving the kernel with locks still held! 1 lock held by syz.0.22/6068: #0: ffff8880792a3588 (vm_lock){++++}-{0:0}, at: lock_next_vma+0x146/0xdc0 mm/mmap_lock.c:220 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup