From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f206.google.com (mail-il1-f206.google.com [209.85.166.206]) (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 7B1A61A5BA0 for ; Thu, 31 Jul 2025 14:52:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.206 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753973558; cv=none; b=de8e+rjDzeZnJfo30gFstg47QT9d8YrdzrB/MOu4smuR2zwa5J6L5g8xiBo/6PJqn9jcFDRZk9lZxmH4ezpA5osYHLxNFhWI5kZL9YQe3ABmvNQQycbasTMD8OKp6PoePgdGVkt60Wo2bL1a/SEfrfwXWeLwwe8AWhOkoymRnpU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753973558; c=relaxed/simple; bh=l7WkyU6OfODE963yZOYzLSQGYFONLhRPuPnn0x4LV2o=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=FDLdwadZYYwdeob9IARhAJ+HQB/UfbveG+XKKgC3Qi0gkHVp1emOG5uLTJE8PlX2YH3QnNg8EWH8cgraXsptFFJG06Ay4kSDOa4WmIUagdwGw/Xh9LkHrbYBarVcs6Tt5krNtkWFbMhtZ3vQ144pDDIaiSD29FAFpA5fyfGKw/o= 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=209.85.166.206 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-f206.google.com with SMTP id e9e14a558f8ab-3e3f0287933so16507385ab.0 for ; Thu, 31 Jul 2025 07:52:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753973554; x=1754578354; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Ymwzw1M9GyTwkEtdG06+DHmrfOOeM02MHVcedVv5kx8=; b=wG7QOsuXIJI6NIoHHj3m88ERwYbMlXOl8MePiwPgdMfSWMP4WzZ74EV0QpE1oQnaim IGsw8s+BuxQToWIUYsDX8pFlrSsjuaYxzry3zhfcAZcfI0IypHODFGuC80AWfTLT1ENU MJY4z+JQO18fWBlKmT5LEwfosniIz3tNGWSUlmD/IuOgQ8cvaZHTKU+VkRVQq0P99zxn IYT+NqAkW69+JGJrt8ZxoJW7BlqklyjawXIBOpyTssXbMnkEbxm6jl/zGEEWYaXnGL+k h2fz6ttfNQbKEWwR5CsfZjMgZ7pLJScy+n6i1+uTlrw62S+xPsQT7sOQhyuAjHhMZKZF wczQ== X-Forwarded-Encrypted: i=1; AJvYcCXYA7CwpIQNozVtMEC1vn3CPLgijA8B7y/YPqXqQk8ZAmuN6YK13Vuq4o6lx0fo8nACi94=@vger.kernel.org X-Gm-Message-State: AOJu0YwM0tN0NPvMhwQJhKsI33SOp0Yr4VcVnJqCfUGPI0sySl4md66q q/aFKw6PX267dfzPfBRPgri81dKkxd8udPTWeq4ja1k5M9Jb+N5lDFzrtck7YMZQ4rNV7uz5DbQ zr36If9vlkBhUkjQfNIQaO+BXpr8RzMzL5OLqQaKAr6TdWKWYcbWrXDgd7ck= X-Google-Smtp-Source: AGHT+IG25XfNbNYUv28uJ3XUFspdMt70vNFmzQpYG4SVQz9FyRSMrC4L9Ta/bpkNQYeWCsCnyUrA/9iX2K79azVp/cNTsBE28sJ/ Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:cb83:0:b0:3e3:e732:aef6 with SMTP id e9e14a558f8ab-3e3f62802e9mr126564965ab.18.1753973554618; Thu, 31 Jul 2025 07:52:34 -0700 (PDT) Date: Thu, 31 Jul 2025 07:52:34 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <688b8332.a00a0220.26d0e1.0044.GAE@google.com> Subject: [syzbot] [bpf?] WARNING in trace_suspend_resume From: syzbot To: akpm@linux-foundation.org, andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, 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: 260f6f4fda93 Merge tag 'drm-next-2025-07-30' of https://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=102f69bc580000 kernel config: https://syzkaller.appspot.com/x/.config?x=af26dbd5a30735 dashboard link: https://syzkaller.appspot.com/bug?extid=99d4fec338b62b703891 compiler: arm-linux-gnueabi-gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/98a89b9f34e4/non_bootable_disk-260f6f4f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/091b40479433/vmlinux-260f6f4f.xz kernel image: https://storage.googleapis.com/syzbot-assets/54ef37cd1da7/zImage-260f6f4f.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+99d4fec338b62b703891@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4102 at mm/highmem.c:622 kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 UID: 0 PID: 4102 Comm: syz.0.84 Not tainted 6.16.0-syzkaller #0 PREEMPT Hardware name: ARM-Versatile Express Call trace: [<80201a24>] (dump_backtrace) from [<80201b20>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257) r7:00000000 r6:8281f77c r5:00000000 r4:8224af5c [<80201b08>] (show_stack) from [<8021faf0>] (__dump_stack lib/dump_stack.c:94 [inline]) [<80201b08>] (show_stack) from [<8021faf0>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120) [<8021fa9c>] (dump_stack_lvl) from [<8021fb30>] (dump_stack+0x18/0x1c lib/dump_stack.c:129) r5:00000000 r4:82a6bd18 [<8021fb18>] (dump_stack) from [<80202624>] (vpanic+0x10c/0x360 kernel/panic.c:440) [<80202518>] (vpanic) from [<802028ac>] (trace_suspend_resume+0x0/0xd8 kernel/panic.c:574) r7:804bdb5c [<80202878>] (panic) from [<802548dc>] (check_panic_on_warn kernel/panic.c:333 [inline]) [<80202878>] (panic) from [<802548dc>] (get_taint+0x0/0x1c kernel/panic.c:328) r3:8280c684 r2:00000001 r1:82231a24 r0:822393ec [<80254868>] (check_panic_on_warn) from [<80254a40>] (__warn+0x80/0x188 kernel/panic.c:845) [<802549c0>] (__warn) from [<80254cc0>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:872) r8:00000009 r7:82265508 r6:df9f9d1c r5:83a93000 r4:00000000 [<80254b4c>] (warn_slowpath_fmt) from [<804bdb5c>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622) r10:00000000 r9:deb56a18 r8:debb2f48 r7:00a00000 r6:00000003 r5:83a93000 r4:ffefd000 [<804bd950>] (kunmap_local_indexed) from [<80538be4>] (__kunmap_local include/linux/highmem-internal.h:102 [inline]) [<804bd950>] (kunmap_local_indexed) from [<80538be4>] (move_pages_pte mm/userfaultfd.c:1457 [inline]) [<804bd950>] (kunmap_local_indexed) from [<80538be4>] (move_pages+0xb24/0x19c8 mm/userfaultfd.c:1868) r7:00a00000 r6:00000000 r5:846e9ec4 r4:84add6c0 [<805380c0>] (move_pages) from [<805c02ec>] (userfaultfd_move fs/userfaultfd.c:1914 [inline]) [<805380c0>] (move_pages) from [<805c02ec>] (userfaultfd_ioctl+0xff8/0x21c4 fs/userfaultfd.c:2037) r10:84add6c0 r9:df9f9e98 r8:21000000 r7:00000001 r6:00000000 r5:20000040 r4:85955000 [<805bf2f4>] (userfaultfd_ioctl) from [<80568ccc>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<805bf2f4>] (userfaultfd_ioctl) from [<80568ccc>] (do_vfs_ioctl fs/ioctl.c:552 [inline]) [<805bf2f4>] (userfaultfd_ioctl) from [<80568ccc>] (__do_sys_ioctl fs/ioctl.c:596 [inline]) [<805bf2f4>] (userfaultfd_ioctl) from [<80568ccc>] (sys_ioctl+0x130/0xba0 fs/ioctl.c:584) r10:83a93000 r9:00000003 r8:85935840 r7:20000040 r6:85935841 r5:00000000 r4:c028aa05 [<80568b9c>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67) Exception stack(0xdf9f9fa8 to 0xdf9f9ff0) 9fa0: 00000000 00000000 00000003 c028aa05 20000040 00000000 9fc0: 00000000 00000000 002f6300 00000036 002e0000 00000000 00006364 76b450bc 9fe0: 76b44ec0 76b44eb0 000193a4 00131fc0 r10:00000036 r9:83a93000 r8:8020029c r7:00000036 r6:002f6300 r5:00000000 r4:00000000 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 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