From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 B716023AB for ; Sun, 3 Nov 2024 00:09:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730592568; cv=none; b=dSdt5NOS12pLN5HfWIDEi1YFBE3Gkjf7onApFkxmS3NP5iQUV8wDbj0Qm6c+047Dfh+KAg0cPnQpPdMONQHbaNq8NMFWLaARjjLSpNlNZ7eemmyh0FL3C7uzmIIEGDOeXRuwr4gwK4dY5dH0v3FGdENFhfUwoRwpSrTZEgrlhoc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730592568; c=relaxed/simple; bh=wPguwDWI5cQrKT9CYZLW96f/OrWOnJ8HmsThpt8aNvY=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=kqxL0t8vUCh7pGjpA4o2WCdbsZBPoaFFlA0J0RxL59dI2UelS9IE/nLmxaRzcerXfrUgpuw8gvNcNl5lY/rHDJ6VFuaeMCof0uDn3CG9ZeDcn4AZGXALYd2PPzULVj2x0PajLxe7lLgWEQSSj++xw5nadbNLvoz24vSZlF+neuI= 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=209.85.166.200 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-f200.google.com with SMTP id e9e14a558f8ab-3a3da2d46b9so31790735ab.0 for ; Sat, 02 Nov 2024 17:09:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730592566; x=1731197366; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=QCQoYRHSrQSQGZA6pi1hyYw8Ig1Ha6Qcl3PsxU+SvBM=; b=IxSDc/EfRETbmm4t1tCaNAppDJ9Hj8cjMQqbehFKAS3dFsLNqcnjTqyX10spmSoLOU Ekbfs7rw+hSYDdIEACTbdGZ99veQBrUgKuRZbNL5azcBvJHuh11J36ZkPBqB8KdHI7IH 7i2IexL8AOpaMwfH9Jnahl5/iyrN3IvI5QkRltH3lbPptYSp+txVBBAn9ysNngbQj0X6 3Prc9a6wm8Ti3pmSyDcMYUUjiGfxs6+T0dNKLbzsUaOnlVdfDQc9a+awMV6uB44DiRPx uvJAA7GPsh3i2qI3X58wXCj+Kc2eYUuAQok5Vqo5SH4nrOxIidvXyoq0ZVSonCIHtk7C mu9g== X-Forwarded-Encrypted: i=1; AJvYcCVuEaPc0rbNln4xBkVjoMH0GJiGcNlufkbR20GlmqyJPKayTdk9mhdDnxGAsyDxxL9rcUnUHY5bV9jdnA==@vger.kernel.org X-Gm-Message-State: AOJu0YxH+OzzeNekbvhqW12iqQYi+HKrg+uYlnxKZfPpsRuuYNJ1Vlcv SyKX6FN6s9XSYooHgdgIKFWxGx7OwUjYysR2PHTA2T4xPD5cL03Op0GkVKXITwSrF3bEAJcwRqc LjkZ06BgtQDQTUeE/fKlUnnaExYXRaRuvIoWzc7XF5U8KsXLCS0R4uBQ= X-Google-Smtp-Source: AGHT+IELDYuq3A1QRKxPj47nnNRaGvwb4yN2GK/9E7YEOBXGYe+Rew6eLzSEpi7vW7Opp3M2HPM2YPMTXQde90EiQtCbzSBh7dhC Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1528:b0:3a3:b593:83a4 with SMTP id e9e14a558f8ab-3a4ed295bb6mr261508265ab.14.1730592565763; Sat, 02 Nov 2024 17:09:25 -0700 (PDT) Date: Sat, 02 Nov 2024 17:09:25 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6726bf35.050a0220.35b515.018b.GAE@google.com> Subject: [syzbot] [sound?] INFO: task hung in snd_card_free From: syzbot To: linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, perex@perex.cz, syzkaller-bugs@googlegroups.com, tiwai@suse.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: e42b1a9a2557 Merge tag 'spi-fix-v6.12-rc5' of git://git.ke.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=114d615f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=4340261e4e9f37fc dashboard link: https://syzkaller.appspot.com/bug?extid=73582d08864d8268b6fd compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=130d3687980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1274ca30580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/d0782982165a/disk-e42b1a9a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f8ab91eac7df/vmlinux-e42b1a9a.xz kernel image: https://storage.googleapis.com/syzbot-assets/debece1170ee/bzImage-e42b1a9a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+73582d08864d8268b6fd@syzkaller.appspotmail.com INFO: task kworker/0:2:965 blocked for more than 143 seconds. Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:24576 pid:965 tgid:965 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0xe55/0x5730 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6782 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116 snd_card_free+0x128/0x190 sound/core/init.c:653 snd_usx2y_disconnect+0x194/0x1f0 sound/usb/usx2y/usbusx2y.c:425 usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461 device_remove drivers/base/dd.c:569 [inline] device_remove+0x122/0x170 drivers/base/dd.c:561 __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296 bus_remove_device+0x22f/0x420 drivers/base/bus.c:576 device_del+0x396/0x9f0 drivers/base/core.c:3864 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304 hub_port_connect drivers/usb/core/hub.c:5361 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x1da5/0x4e10 drivers/usb/core/hub.c:5903 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task kworker/1:2:2143 blocked for more than 143 seconds. Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:23744 pid:2143 tgid:2143 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0xe55/0x5730 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6782 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116 snd_card_free+0x128/0x190 sound/core/init.c:653 snd_usx2y_disconnect+0x194/0x1f0 sound/usb/usx2y/usbusx2y.c:425 usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461 device_remove drivers/base/dd.c:569 [inline] device_remove+0x122/0x170 drivers/base/dd.c:561 __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296 bus_remove_device+0x22f/0x420 drivers/base/bus.c:576 device_del+0x396/0x9f0 drivers/base/core.c:3864 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2304 hub_port_connect drivers/usb/core/hub.c:5361 [inline] hub_port_connect_change drivers/usb/core/hub.c:5661 [inline] port_event drivers/usb/core/hub.c:5821 [inline] hub_event+0x1da5/0x4e10 drivers/usb/core/hub.c:5903 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task syz-executor413:5880 blocked for more than 144 seconds. Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor413 state:D stack:26352 pid:5880 tgid:5880 ppid:5851 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0xe55/0x5730 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6782 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752 device_lock include/linux/device.h:1014 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7a45e945a9 RSP: 002b:00007ffea42b3558 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7a45e945a9 RDX: 0000000000000000 RSI: 00000000c0105512 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 00312e6364755f79 R09: 00000000000000a0 R10: 000000000000001f R11: 0000000000000246 R12: 0000000000044933 R13: 00007ffea42b356c R14: 00007ffea42b3580 R15: 00007ffea42b3570 INFO: task syz-executor413:5881 blocked for more than 144 seconds. Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor413 state:D stack:26640 pid:5881 tgid:5881 ppid:5853 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0xe55/0x5730 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6782 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752 device_lock include/linux/device.h:1014 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7a45e945a9 RSP: 002b:00007ffea42b3558 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7a45e945a9 RDX: 0000000000000000 RSI: 00000000c0105512 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 00322e6364755f79 R09: 00000000000000a0 R10: 000000000000001f R11: 0000000000000246 R12: 000000000004493f R13: 00007ffea42b356c R14: 00007ffea42b3580 R15: 00007ffea42b3570 INFO: task syz-executor413:5882 blocked for more than 144 seconds. Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor413 state:D stack:26912 pid:5882 tgid:5882 ppid:5856 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0xe55/0x5730 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6782 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752 device_lock include/linux/device.h:1014 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7a45e945a9 RSP: 002b:00007ffea42b3558 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7a45e945a9 RDX: 0000000000000000 RSI: 00000000c0105512 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 00332e6364755f79 R09: 00000000000000a0 R10: 000000000000001f R11: 0000000000000246 R12: 000000000004494f R13: 00007ffea42b356c R14: 00007ffea42b3580 R15: 00007ffea42b3570 INFO: task syz-executor413:5883 blocked for more than 144 seconds. Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor413 state:D stack:28176 pid:5883 tgid:5883 ppid:5850 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0xe55/0x5730 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6782 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752 device_lock include/linux/device.h:1014 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7a45e945a9 RSP: 002b:00007ffea42b3558 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7a45e945a9 RDX: 0000000000000000 RSI: 00000000c0105512 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 00302e6364755f79 R09: 00000000000000a0 R10: 000000000000001f R11: 0000000000000246 R12: 0000000000044927 R13: 00007ffea42b356c R14: 00007ffea42b3580 R15: 00007ffea42b3570 INFO: task syz-executor413:5884 blocked for more than 145 seconds. Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor413 state:D stack:27200 pid:5884 tgid:5884 ppid:5857 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0xe55/0x5730 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6782 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752 device_lock include/linux/device.h:1014 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __x64_sys_ioctl+0x18f/0x220 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7a45e945a9 RSP: 002b:00007ffea42b3558 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7a45e945a9 RDX: 0000000000000000 RSI: 00000000c0105512 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 00342e6364755f79 R09: 00000000000000a0 R10: 000000000000001f R11: 0000000000000246 R12: 0000000000044952 R13: 00007ffea42b356c R14: 00007ffea42b3580 R15: 00007ffea42b3570 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720 5 locks held by kworker/0:2/965: #0: ffff888022ef1d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc90004317d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 #2: ffff888144f04190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #2: ffff888144f04190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849 #3: ffff888073193190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff888073193190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295 #4: ffff888076f82160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #4: ffff888076f82160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff888076f82160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293 5 locks held by kworker/1:2/2143: #0: ffff888022ef1d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc9000540fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 #2: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #2: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849 #3: ffff888031f37190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff888031f37190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295 #4: ffff88802fe31160 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #4: ffff88802fe31160 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88802fe31160 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293 2 locks held by getty/5579: #0: ffff8880357d80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211 1 lock held by syz-executor413/5880: #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 1 lock held by syz-executor413/5881: #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 1 lock held by syz-executor413/5882: #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 1 lock held by syz-executor413/5883: #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 1 lock held by syz-executor413/5884: #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline] #0: ffff888144bf4190 (&dev->mutex){....}-{3:3}, at: usbdev_ioctl+0x1a9/0x4010 drivers/usb/core/devio.c:2824 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #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+0x116/0x1f0 lib/dump_stack.c:120 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf0c/0x1240 kernel/hung_task.c:379 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 63 Comm: kworker/u8:4 Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:call_function_single_prep_ipi+0x12e/0x1b0 kernel/sched/core.c:3806 Code: be 08 00 00 00 4c 89 ef e8 6f b4 91 00 48 8b 44 24 20 48 89 c2 48 83 ca 08 f0 48 0f b1 13 75 c3 44 89 e7 e8 14 ca fe ff 31 d2 <48> b8 00 00 00 00 00 fc ff df 48 c7 44 05 00 00 00 00 00 48 8b 44 RSP: 0018:ffffc900015d7910 EFLAGS: 00000246 RAX: 0000000000004000 RBX: ffffffff8de957c0 RCX: ffffffff8181686a RDX: 0000000000000001 RSI: ffffffff81816945 RDI: ffff8880b863f990 RBP: 1ffff920002baf22 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc900015d7930 R14: ffff8880b8740110 R15: ffff8880b8740100 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5a4d87b580 CR3: 000000000df7c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: send_call_function_single_ipi kernel/smp.c:115 [inline] smp_call_function_many_cond+0xcee/0x1300 kernel/smp.c:866 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1051 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2085 [inline] text_poke_bp_batch+0x659/0x760 arch/x86/kernel/alternative.c:2295 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline] text_poke_flush arch/x86/kernel/alternative.c:2483 [inline] text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2493 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 jump_label_update+0x1d7/0x400 kernel/jump_label.c:920 static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate mm/kfence/core.c:849 [inline] toggle_allocation_gate+0xfc/0x260 mm/kfence/core.c:841 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.541 msecs --- This report is generated by a bot. 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