usbvision_set_audio: can't write iopin register for audio switching usbvision_radio_close: Final disconnect ------------[ cut here ]------------ sysfs group 'power' not found for kobject 'radio0' WARNING: CPU: 1 PID: 4849 at fs/sysfs/group.c:278 sysfs_remove_group fs/sysfs/group.c:278 [inline] WARNING: CPU: 1 PID: 4849 at fs/sysfs/group.c:278 sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:269 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 4849 Comm: v4l_id Not tainted 5.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xef/0x16e lib/dump_stack.c:118 panic+0x2aa/0x6e1 kernel/panic.c:221 __warn.cold+0x2f/0x30 kernel/panic.c:582 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:267 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:sysfs_remove_group fs/sysfs/group.c:278 [inline] RIP: 0010:sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:269 Code: 48 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 41 48 8b 33 48 c7 c7 20 65 f1 85 e8 43 65 84 ff <0f> 0b eb 95 e8 d2 80 d8 ff e9 d2 fe ff ff 48 89 df e8 c5 80 d8 ff RSP: 0018:ffff8881ac0a7c48 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffffff8615ebe0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff812975ed RDI: ffffed1035814f7b RBP: 0000000000000000 R08: ffff8881ac6b6200 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d2790af8 R13: ffffffff8615f180 R14: 0000000000000000 R15: ffff8881d2790fb8 dpm_sysfs_remove+0x97/0xb0 drivers/base/power/sysfs.c:741 device_del+0x18b/0xd30 drivers/base/core.c:2641 device_unregister+0x22/0xc0 drivers/base/core.c:2696 video_unregister_device+0xa2/0xc0 drivers/media/v4l2-core/v4l2-dev.c:1076 usbvision_unregister_video+0x83/0x120 drivers/media/usb/usbvision/usbvision-video.c:1244 usbvision_release+0x10d/0x1c0 drivers/media/usb/usbvision/usbvision-video.c:1357 usbvision_radio_close.cold+0x2b/0x74 drivers/media/usb/usbvision/usbvision-video.c:1130 v4l2_release+0x2e7/0x390 drivers/media/v4l2-core/v4l2-dev.c:455 __fput+0x2d7/0x840 fs/file_table.c:280 task_work_run+0x13f/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x4e0/0x5a0 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fbe0c22c2b0 Code: 40 75 0b 31 c0 48 83 c4 08 e9 0c ff ff ff 48 8d 3d c5 32 08 00 e8 c0 07 02 00 83 3d 45 a3 2b 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ce 8a 01 00 48 89 04 24 RSP: 002b:00007ffc4eb42ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fbe0c22c2b0 RDX: 0000000000000013 RSI: 0000000080685600 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000400884 R13: 00007ffc4eb42c40 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..