From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 904C1816 for ; Mon, 12 Jun 2023 22:42:13 +0000 (UTC) Received: from mail-io1-f80.google.com (mail-io1-f80.google.com [209.85.166.80]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8587A11B for ; Mon, 12 Jun 2023 15:42:11 -0700 (PDT) Received: by mail-io1-f80.google.com with SMTP id ca18e2360f4ac-77a55f64dbaso548733839f.2 for ; Mon, 12 Jun 2023 15:42:11 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686609731; x=1689201731; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=03CwWPtNpjZn2+VqtMiwIjTRdCtuV2Q+AKbauGSX8sw=; b=bDBbabBxpc6U9NTJLYYqGtOJr0ajIPyn8260dJ5xOxuQRhz3LOd9a42Uk5lLBnyrG1 njwLOuFnywvk6rHyDD3vIPxS25GV0b0Ppku7XG9NFaHxGUb1qzKc+vMDE6732krs4l/G W/D36wqhJS9ncfg4dwVzDfbJCRNckiKg2yD/05KZ8GdWxyrbE0jzOogswAqgTDAkJCpf B2I112BIQEuRpJhMMGg2sge986WxapS6tr6OBtqkhpW8c0jS05FJQDtVggVPtJA/vW42 SlSU9FTjvVrA8JAbkdikBsn+TafkmCZ9j1np0SnQqePCgIcISORj7dCmsNtdHh9mV0MI /bXA== X-Gm-Message-State: AC+VfDwoKF3i/OOJQJLNioTD8rQfrz6dfl+JfJnj2lYENBkL5EU+xB/p tICSJyxvMiPjsb4UV3UL+KiZRIUnRoWgRcpa2FTQd7zUjnCh X-Google-Smtp-Source: ACHHUZ5IVgqV9tzRTu/ac2FX1lgOBGtdKKBMQZLoe6TCAvoC+ZYLnnGFf8ogyUd/hdm0WBaJxYCdtEV55tLfwp42LLZf6UKzhLvr Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:10c8:b0:420:d4da:3947 with SMTP id q8-20020a05663810c800b00420d4da3947mr4838858jad.4.1686609730882; Mon, 12 Jun 2023 15:42:10 -0700 (PDT) Date: Mon, 12 Jun 2023 15:42:10 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e274a205fdf66d0a@google.com> Subject: [syzbot] [net?] WARNING in print_tainted (2) From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-1.7 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Hello, syzbot found the following issue on: HEAD commit: 022ce8862dff Merge tag 'i2c-for-6.4-rc6' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11cd352d280000 kernel config: https://syzkaller.appspot.com/x/.config?x=869b244dcd5d983c dashboard link: https://syzkaller.appspot.com/bug?extid=732b84af10976114e761 compiler: arm-linux-gnueabi-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 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/c35b5b2731d2/non_bootable_disk-022ce886.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/81969b6d173b/vmlinux-022ce886.xz kernel image: https://storage.googleapis.com/syzbot-assets/95a50e8c0f0b/zImage-022ce886.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+732b84af10976114e761@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 12513 at mm/mmap.c:965 vma_merge+0x170/0x818 mm/mmap.c:965 Modules linked in: Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 PID: 12513 Comm: syz-executor.1 Not tainted 6.4.0-rc5-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<817da338>] (dump_backtrace) from [<817da42c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256) r7:00000000 r6:826229c4 r5:60000093 r4:81f9d90c [<817da414>] (show_stack) from [<817f6f14>] (__dump_stack lib/dump_stack.c:88 [inline]) [<817da414>] (show_stack) from [<817f6f14>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106) [<817f6ecc>] (dump_stack_lvl) from [<817f6f38>] (dump_stack+0x18/0x1c lib/dump_stack.c:113) r5:00000000 r4:82850d14 [<817f6f20>] (dump_stack) from [<817daf24>] (panic+0x120/0x370 kernel/panic.c:340) [<817dae04>] (panic) from [<80241fd0>] (print_tainted+0x0/0xa0 kernel/panic.c:236) r3:8260c488 r2:00000001 r1:81f86a00 r0:81f8e410 r7:80465728 [<80241f4c>] (check_panic_on_warn) from [<802421c4>] (__warn+0x7c/0x180 kernel/panic.c:673) [<80242148>] (__warn) from [<802423a0>] (warn_slowpath_fmt+0xd8/0x1d8 kernel/panic.c:697) r8:00000009 r7:000003c5 r6:81fb2798 r5:8260c960 r4:824adf7c [<802422cc>] (warn_slowpath_fmt) from [<80465728>] (vma_merge+0x170/0x818 mm/mmap.c:965) r10:00000000 r9:00000000 r8:847a4f00 r7:200e2000 r6:85c93630 r5:00000000 r4:85c939f8 [<804655b8>] (vma_merge) from [<80531bf8>] (userfaultfd_register fs/userfaultfd.c:1485 [inline]) [<804655b8>] (vma_merge) from [<80531bf8>] (userfaultfd_ioctl+0x1268/0x1534 fs/userfaultfd.c:2050) r10:20ce2000 r9:85c93630 r8:200e2000 r7:85c939f8 r6:00100277 r5:85f98000 r4:ec8a1eb8 [<80530990>] (userfaultfd_ioctl) from [<804e54dc>] (vfs_ioctl fs/ioctl.c:51 [inline]) [<80530990>] (userfaultfd_ioctl) from [<804e54dc>] (do_vfs_ioctl fs/ioctl.c:830 [inline]) [<80530990>] (userfaultfd_ioctl) from [<804e54dc>] (__do_sys_ioctl fs/ioctl.c:868 [inline]) [<80530990>] (userfaultfd_ioctl) from [<804e54dc>] (sys_ioctl+0x110/0xa74 fs/ioctl.c:856) r10:8530e870 r9:00000003 r8:85ca1f00 r7:20000100 r6:85ca1f01 r5:00000000 r4:c020aa00 [<804e53cc>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66) Exception stack(0xec8a1fa8 to 0xec8a1ff0) 1fa0: 00000000 00000000 00000003 c020aa00 20000100 00000000 1fc0: 00000000 00000000 0014c2b8 00000036 7ea0c3c2 76b056d0 7ea0c534 76b0520c 1fe0: 76b05020 76b05010 00017004 0004dfb0 r10:00000036 r9:84963ac0 r8:80200288 r7:00000036 r6:0014c2b8 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 bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup