From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (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 1E62EDDC1 for ; Mon, 27 May 2024 06:03:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716789809; cv=none; b=hHfmHWMW5voFZn70PUMzgu8ygfibBwQlOSxWoOm7oWjq+61EUathaOqG6h+7J41qlzk+1gqGrfkTZn0OYL1CHeyEOGZ4i2O7EcgTprlTPudk17qrPBbOnrdDnKbAQONWCHs5IJ1YYSli2KSzoWl/wAitYcrK4N7t0ixcMY2hg8g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716789809; c=relaxed/simple; bh=91RmJoS8ApwBbCnKWn4Vdvz5yrryEn4O0r1bO0e2r28=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=GXwYX6svBFbgor+zZZRwyurfsb0iCDGsBDKgyqKGBEr2hHXn5mlBXCxkb2ey8HGy/zqG6dFhBM/eig05h/N637eUwFJJF2Q4dhIEcwPXO8x95viFLmoi90ocEiungv+zK8thXxfewdi5okj53r4iBggTDb4YePErDY8e+0NJ4pg= 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=209.85.166.208 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-f208.google.com with SMTP id e9e14a558f8ab-3737b3ee909so30398545ab.2 for ; Sun, 26 May 2024 23:03:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716789807; x=1717394607; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=ylosgLFWkzz27URtDPQRIStv485PYnIrmAp+vnJMT5w=; b=QKTPl40Ruj1fy2aPdK32l5bhIAAbWJJ4h/D6wQuUgeSwouUQcLmtVisXJjNb6zDzmt hhhGwLGiLMwBTiZxO2ZfNyDL5UQYzAs26ebxYPNpqXVN9zUKW24jAXzmBwL6HUmKGw2n lYo+I9XkFQuNFWC3QMlAU6z60z1TNnrKRS7A5GzEtiTn1BdnyYgIVVgYY/U7VDSytOWl zynyxLh1Hey8JxuqPBIcB7jhlgtVKw+n2kXxDvqfFlbMisID7mmxwfTaSlvlFq9Btfsk GY3T1h32Wg+EEcjfoq3FND7umKWGS4pHT3aTjfLoUv0GAOYfb3Q2loZ0cmzt+eWsDOEP nagw== X-Forwarded-Encrypted: i=1; AJvYcCUw8MBzbq32SQg65X15Au6ELQ0/KlSs9Bp50QiNw/SRte25tOCbrze26fr0a+Sf9hXEL81Uy3zLSMKbnCono1MoNM5+2eNJReH8FozO X-Gm-Message-State: AOJu0YzhBBUjq5gOT4rpwz94jBBeCoRmlGZ8ftaW1qDOFDxODWoq10Ge t2v1n60B+nNvzoC/0Ygx2O8n3teCEdv995RlSlVnd7Cm8I9DqS3dUMn9jcnZioS2KLPB5WrJREz eUJQfl9mm/ctyQL9HufM/PP6fqguez86YWk+AEyPrD/MPYCZQzGMQuDw= X-Google-Smtp-Source: AGHT+IGziuuHeulebz6CLCVgizY+guJCFI18W9Te8LGSJfIs/iYOaxdh3laW9XqBc7ooLU5qkANCTYlary/U5tulRumwz/2bkTIh Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:cda6:0:b0:374:5d81:9135 with SMTP id e9e14a558f8ab-3745d819329mr531955ab.0.1716789807386; Sun, 26 May 2024 23:03:27 -0700 (PDT) Date: Sun, 26 May 2024 23:03:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009fa48a06196946dc@google.com> Subject: [syzbot] [serial?] WARNING in uart_write From: syzbot To: gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 124cfbcd6d18 Add linux-next specific files for 20240521 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=12341062980000 kernel config: https://syzkaller.appspot.com/x/.config?x=2c3a67a38201bdf7 dashboard link: https://syzkaller.appspot.com/bug?extid=a38f8e1908608d337bb3 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ff8e45d8b821/disk-124cfbcd.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6aeeec759cde/vmlinux-124cfbcd.xz kernel image: https://storage.googleapis.com/syzbot-assets/9e7d931d0a4b/bzImage-124cfbcd.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a38f8e1908608d337bb3@syzkaller.appspotmail.com sp0: Synchronizing with TNC ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5215 at drivers/tty/serial/serial_core.c:625 uart_write+0x2b0/0x320 drivers/tty/serial/serial_core.c:625 Modules linked in: CPU: 0 PID: 5215 Comm: syz-executor.1 Not tainted 6.9.0-next-20240521-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:uart_write+0x2b0/0x320 drivers/tty/serial/serial_core.c:625 Code: 74 08 48 89 df e8 c0 5e bf fc 48 83 3b 00 74 74 e8 55 7a 59 fc eb 97 e8 4e 7a 59 fc 45 31 e4 eb 08 e8 44 7a 59 fc 45 31 ed 90 <0f> 0b 90 45 84 e4 74 0a e8 33 7a 59 fc 45 31 f6 eb 84 e8 29 7a 59 RSP: 0018:ffffc900047874b8 EFLAGS: 00010046 RAX: ffffffff853ceb62 RBX: dffffc0000000000 RCX: 0000000000040000 RDX: ffffc9000a14b000 RSI: 000000000001b0ec RDI: 000000000001b0ed RBP: ffff888020728f48 R08: 0000000000000003 R09: fffff520008f0e74 R10: dffffc0000000000 R11: fffff520008f0e74 R12: 0000000000000000 R13: 0000000000000246 R14: ffff888020728be8 R15: ffffffff94adece0 FS: 00007f53ae0446c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1488dbcc98 CR3: 0000000079a6e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tnc_init drivers/net/hamradio/6pack.c:531 [inline] sixpack_open+0x790/0xa80 drivers/net/hamradio/6pack.c:628 tty_ldisc_open drivers/tty/tty_ldisc.c:432 [inline] tty_ldisc_reinit+0x2d4/0x4a0 drivers/tty/tty_ldisc.c:667 tty_reopen+0x20b/0x2d0 drivers/tty/tty_io.c:1366 tty_open_by_driver drivers/tty/tty_io.c:2082 [inline] tty_open+0xa26/0xdf0 drivers/tty/tty_io.c:2135 chrdev_open+0x5b0/0x630 fs/char_dev.c:414 do_dentry_open+0x95a/0x1720 fs/open.c:955 do_open fs/namei.c:3650 [inline] path_openat+0x289f/0x3280 fs/namei.c:3807 do_filp_open+0x235/0x490 fs/namei.c:3834 do_sys_openat2+0x13e/0x1d0 fs/open.c:1405 do_sys_open fs/open.c:1420 [inline] __do_sys_openat fs/open.c:1436 [inline] __se_sys_openat fs/open.c:1431 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1431 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f53ad27cee9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f53ae0440c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f53ad3ac050 RCX: 00007f53ad27cee9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 00007f53ad2c949e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f53ad3ac050 R15: 00007ffc05d3f0d8 --- 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