From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (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 F3EB312C54D for ; Sun, 13 Oct 2024 10:14:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728814468; cv=none; b=MGyERb4Bo2MR9iryIZsQsLDLRD94ogZEadL1mmknEnR3SV+eWJufCSDYDC4jcJpd/ajQ8ZUFV0FdXC859IYplobv8/kDFPCSaAxBzSHc10tbZTJ24fNVJvo2a79ZcxM5MMQL9WB0paT9J6U9osY1DMhw19XYmd5YK/0IUjQveao= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728814468; c=relaxed/simple; bh=y5mpwZfkOxo2JFbA1LuPV3cn8EYOrYBePaBQMZQViyo=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=pUWsH8fb56EhKy8vBWXVC5lkZpVflLrsrK5gNDzU/yys04enDbD/4R4KUcVwDOEroN6bLoJ2ntQJgXIvetkuZSqbhOW8TZo5kZnJvqAoGxh5USa+MGjQzAfsk0znXsG+3Q6+1Yh0qwg5GxyqOk6+LrXA/wKPiKRDtLA80G7A0H4= 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=209.85.166.198 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-f198.google.com with SMTP id e9e14a558f8ab-3a3b4395dedso23868165ab.1 for ; Sun, 13 Oct 2024 03:14:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728814466; x=1729419266; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=wfaQulymYnC8oCbwRSN1pMqbyZ0WJbqyTy3xy/A0104=; b=RgvfHvr7vauEDaGq3TjpE+rZ5J89TI6sDbrqVavhWjzLI/w8DnZmdTqdUVcYUjvJ3d yAJeskwZR8S94uST20RQA61WhhIxnpdHpamAqr2CI52Yski++qJSa5Yb2yvcMjtZYD2+ sV3MG9f+7WPTrBV7v03Ng8VCZRwokEzOzSbtFw9furwWCR1gRpxfrl4qt9uH5EV536SO MJukRK5SfQW5qvPkSWHt9oDnrkjuMyJmAt5Jl2kxAavin3O7IBPULDUvKz4BL+1Hbj4v MgELu/NJIOMeqckybXGKxX9fD22YGx75HMfsbZ1fpQYqlBv2E7FT4B2CPWEZ7nJgB5VL ychQ== X-Forwarded-Encrypted: i=1; AJvYcCWdyivhxfUM4U28H0wG5aNITbkbOTCcqWenCP1v1onWHerJKJKe8IqaCY2VdyrsXMIczQz9p5zMXEYTFAE=@vger.kernel.org X-Gm-Message-State: AOJu0YzctcE9IHgsTYntLKAMoIWWFpJjK1G26Z/X8D56FAoKedtnSQP2 tdNy4a/wjq/L9ed9+HekdXYlFluxhXGQ2/vFcXMC03nmS1c2XQaJzy9rgwvvOvmH7akUA+T8elD QBccWWtcCAN4nfVhl2gixeCUMsbZIrbJpTJCPxTGBhXQN2i64F9daxE4= X-Google-Smtp-Source: AGHT+IFpEdHnC3XYmJC6x2f5wwLVTMLyuem6p6Jlb27Sd9GrtHQvU9SA/C1T3iJij+YgNBVk8sAC7+1z/M0Ok4YuwsOwLGpI7ygG Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:2163:b0:3a3:b143:98 with SMTP id e9e14a558f8ab-3a3b5faabf5mr52246425ab.15.1728814466077; Sun, 13 Oct 2024 03:14:26 -0700 (PDT) Date: Sun, 13 Oct 2024 03:14:26 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <670b9d82.050a0220.3e960.0037.GAE@google.com> Subject: [syzbot] [usb?] INFO: task hung in chaoskey_release From: syzbot To: gregkh@linuxfoundation.org, keithp@keithp.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 33ce24234fca Add linux-next specific files for 20241008 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1209afd0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4750ca93740b938d dashboard link: https://syzkaller.appspot.com/bug?extid=7c04149f25df31636533 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/ee8dc2df0c57/disk-33ce2423.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/dc473c0fa06e/vmlinux-33ce2423.xz kernel image: https://storage.googleapis.com/syzbot-assets/4671f1ca2e61/bzImage-33ce2423.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7c04149f25df31636533@syzkaller.appspotmail.com INFO: task syz.0.1141:10263 blocked for more than 143 seconds. Not tainted 6.12.0-rc2-next-20241008-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.1141 state:D stack:26544 pid:10263 tgid:10262 ppid:8755 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x1895/0x4b30 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6774 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752 chaoskey_release+0x79/0x2f0 drivers/usb/misc/chaoskey.c:299 __fput+0x23f/0x880 fs/file_table.c:431 task_work_run+0x24f/0x310 kernel/task_work.c:228 get_signal+0x15e8/0x1740 kernel/signal.c:2690 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f769ff7dff9 RSP: 002b:00007f76a0d92038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: fffffffffffffe00 RBX: 00007f76a0135f80 RCX: 00007f769ff7dff9 RDX: 0000000000000080 RSI: 0000000020000200 RDI: 000000000000000a RBP: 00007f769fff0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f76a0135f80 R15: 00007ffefc59c0a8 INFO: task syz.0.1141:10290 blocked for more than 143 seconds. Not tainted 6.12.0-rc2-next-20241008-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.1141 state:D stack:26640 pid:10290 tgid:10262 ppid:8755 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x1895/0x4b30 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6774 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752 chaoskey_release+0x169/0x2f0 drivers/usb/misc/chaoskey.c:322 __fput+0x23f/0x880 fs/file_table.c:431 task_work_run+0x24f/0x310 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f769ff7dff9 RSP: 002b:00007f76a0d71038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f76a0136058 RCX: 00007f769ff7dff9 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000003 RBP: 00007f769fff0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f76a0136058 R15: 00007ffefc59c0a8 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-next-20241008-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xff4/0x1040 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline] NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111 --- 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