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 480BF128832 for ; Mon, 26 Feb 2024 13:19:22 +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=1708953564; cv=none; b=P1Xks+KwU0ufslLWwi9kJ0yTOOlBDV6EEiUrGty8h5l5vhdeewzoOi9NYIkASdERVcknWwBoUzuH+ztz2YWF8IF6+2S3K0Rq4GGEmPKkEyGTbpuc/IpMhCKKoyVSAIIt4K4cP36+vZPTBLV+GAbrXtgkMoufC1kiRJXc1PQUFsk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708953564; c=relaxed/simple; bh=9Qx0X6N96a5bvYf78hnA8WJMdEzQ3DEBE5GYrA8/jUY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=inxLoOEo60O//Wn5/HU1EF7VAy7js8bwVMh76jsTYL5gqOD63jI8DXefTlcyEZYDmXkW3LI5F8UZaxJX7aqGvkinRV0Fh2OAeZtbFKcbIDIcD0+3YenytDaxWJ43NScXhqa5IE8rMQwbYY8Z9oq+fGrX+BBpWESXCCzcTy9JKl0= 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-7bfffd9b47fso298370639f.1 for ; Mon, 26 Feb 2024 05:19:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708953562; x=1709558362; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=MXuXfQWJYfhI3N1t9dswUoSOZrO136/zC4yXB1z1cNY=; b=T51Rfq7zMSNcnLmUTpbA85jeb8ymN3XPac19iuO8U8STLa9VvY7RVpFFnYAbUmvo+e yOSbRKNJlO7vY1r9Ex0yhoivrAqc+h61+nZKs852G0MYLDR7dEGlprutYZ7fk2fZFtUm V/ZBIERarl1gYTRQ53USN3dgzchru2ScN8we4iAe95ecCP0TFwj19xcryKmAsJlYFQLW JRkJDZP8yp3nXZXNo8jbGKFJXRH9ny/pvUwFWbUNqFT0QR6RTkINpLzOj1FLt7rfDyq+ Q5i6+8aaAbmANKWeIDP/xd8fJUNFiugz/nFIclY1HYpSMK5/ynyi0/y9XC509zREyQi0 MtNQ== X-Forwarded-Encrypted: i=1; AJvYcCVu+oLWHdTbUkGJJMDLJSkYX+t5DbutzaU5V/PfwRAB5YoNoQo5oV0gr0HzaWQrCNBLAZ2FiQw9Xg70yyDjgfNVUVkujA0/GlzcotTO X-Gm-Message-State: AOJu0Yy/6jUo5aKs9IEATXIdB5lpu2F1hlgE43sNEoQoGwigq9HzAEVG 6uf3ediWtzo4I8G9vuutXd+CgEs0ctaFHg0fkdZOWwsj27mukessLUXCyMFiWyG5l+Q7QSXhxf5 RPHRlmdAO2poBjwiymmQ3poWVhcx96LBqyWamLGhhi/VPVJpPcJizHzs= X-Google-Smtp-Source: AGHT+IGysToUbqQaeYt0IjPDwZGh+WRCUEQNfg9uTtRD0PXqy0+lIeWIjGxkZ3aH8vISieMF+AU+skk/evvYDYbU9KJidTdcOsB/ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:2710:b0:474:8b40:13fb with SMTP id m16-20020a056638271000b004748b4013fbmr118243jav.6.1708953560918; Mon, 26 Feb 2024 05:19:20 -0800 (PST) Date: Mon, 26 Feb 2024 05:19:20 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000efadd3061248c1cd@google.com> Subject: [syzbot] [mm?] WARNING in kunmap_local_indexed From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 70ff1fe626a1 Merge tag 'docs-6.8-fixes3' of git://git.lwn... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17130f4a180000 kernel config: https://syzkaller.appspot.com/x/.config?x=4cf52b43f46d820d dashboard link: https://syzkaller.appspot.com/bug?extid=691cb37358791bebebe6 compiler: arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm syz repro: https://syzkaller.appspot.com/x/repro.syz?x=151e4e54180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=115b934a180000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/8ead8862021c/non_bootable_disk-70ff1fe6.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/bc398db9fd8c/vmlinux-70ff1fe6.xz kernel image: https://storage.googleapis.com/syzbot-assets/6d3f8b72a671/zImage-70ff1fe6.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+691cb37358791bebebe6@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 2978 at mm/highmem.c:611 kunmap_local_indexed+0x210/0x228 mm/highmem.c:611 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 1 PID: 2978 Comm: syz-executor914 Not tainted 6.8.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<81837b0c>] (dump_backtrace) from [<81837c08>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:82622dc4 r5:60000093 r4:81fbd4bc [<81837bf0>] (show_stack) from [<81855124>] (__dump_stack lib/dump_stack.c:88 [inline]) [<81837bf0>] (show_stack) from [<81855124>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<818550dc>] (dump_stack_lvl) from [<81855148>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000000 r4:82850d18 [<81855130>] (dump_stack) from [<818386b0>] (panic+0x120/0x378 kernel/panic.c:344) [<81838590>] (panic) from [<802439cc>] (check_panic_on_warn kernel/panic.c:237 [inline]) [<81838590>] (panic) from [<802439cc>] (print_tainted+0x0/0xa0 kernel/panic.c:232) r3:8260c484 r2:00000001 r1:81fa5e94 r0:81fadb60 r7:8046cfa0 [<80243958>] (check_panic_on_warn) from [<80243bc0>] (__warn+0x7c/0x180 kernel/panic.c:677) [<80243b44>] (__warn) from [<80243e3c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:702) r8:00000009 r7:81fd3b7c r6:df961b84 r5:83668c00 r4:00000000 [<80243cc8>] (warn_slowpath_fmt) from [<8046cfa0>] (kunmap_local_indexed+0x210/0x228 mm/highmem.c:611) r10:200fb000 r9:ffeda7d8 r8:836c9830 r7:84151500 r6:00000003 r5:83668c00 r4:ffedc000 [<8046cd90>] (kunmap_local_indexed) from [<804d9c84>] (__kunmap_local include/linux/highmem-internal.h:94 [inline]) [<8046cd90>] (kunmap_local_indexed) from [<804d9c84>] (move_pages_pte mm/userfaultfd.c:1162 [inline]) [<8046cd90>] (kunmap_local_indexed) from [<804d9c84>] (move_pages+0x5a4/0x1050 mm/userfaultfd.c:1452) r7:84151500 r6:00000000 r5:00000000 r4:fffffffe [<804d96e0>] (move_pages) from [<80551f30>] (userfaultfd_move fs/userfaultfd.c:2047 [inline]) [<804d96e0>] (move_pages) from [<80551f30>] (userfaultfd_ioctl+0x117c/0x211c fs/userfaultfd.c:2169) r10:8415157c r9:00000000 r8:00000000 r7:00000001 r6:20000080 r5:84151500 r4:84468000 [<80550db4>] (userfaultfd_ioctl) from [<80502158>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<80550db4>] (userfaultfd_ioctl) from [<80502158>] (do_vfs_ioctl fs/ioctl.c:831 [inline]) [<80550db4>] (userfaultfd_ioctl) from [<80502158>] (__do_sys_ioctl fs/ioctl.c:869 [inline]) [<80550db4>] (userfaultfd_ioctl) from [<80502158>] (sys_ioctl+0x118/0xb58 fs/ioctl.c:857) r10:83668c00 r9:00000003 r8:842e2900 r7:20000080 r6:842e2900 r5:00000000 r4:c028aa05 [<80502040>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xdf961fa8 to 0xdf961ff0) 1fa0: ffffffff 00000000 00000003 c028aa05 20000080 00000000 1fc0: ffffffff 00000000 0008e050 00000036 000f4240 00000000 00000001 00003a97 1fe0: 7ebe5c70 7ebe5c60 00010694 0002e7e0 r10:00000036 r9:83668c00 r8:80200288 r7:00000036 r6:0008e050 r5:00000000 r4:ffffffff Rebooting in 86400 seconds.. --- 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