usbvision_radio_close: Final disconnect ------------[ cut here ]------------ sysfs group 'power' not found for kobject 'radio4' WARNING: CPU: 0 PID: 13897 at fs/sysfs/group.c:279 sysfs_remove_group fs/sysfs/group.c:279 [inline] WARNING: CPU: 0 PID: 13897 at fs/sysfs/group.c:279 sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:270 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 13897 Comm: v4l_id Not tainted 5.7.0-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:175 [inline] fixup_bug arch/x86/kernel/traps.c:170 [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:279 [inline] RIP: 0010:sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:270 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 e0 8c f1 85 e8 63 84 82 ff <0f> 0b eb 95 e8 12 1c d8 ff e9 d2 fe ff ff 48 89 df e8 05 1c d8 ff RSP: 0018:ffff8881ccfb7c58 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffffff86174620 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff812a2d8d RDI: ffffed10399f6f7d RBP: 0000000000000000 R08: ffff8881d8d53180 R09: ffffed103b646292 R10: ffff8881db23148f R11: ffffed103b646291 R12: ffff8881d29b8b58 R13: ffffffff86174bc0 R14: 0000000000000000 R15: ffff8881d29b9058 dpm_sysfs_remove+0x97/0xb0 drivers/base/power/sysfs.c:794 device_del+0x18b/0xd30 drivers/base/core.c:2687 device_unregister+0x22/0xc0 drivers/base/core.c:2742 video_unregister_device+0xa2/0xc0 drivers/media/v4l2-core/v4l2-dev.c:1076 usbvision_unregister_video+0x83/0x120 drivers/staging/media/usbvision/usbvision-video.c:1244 usbvision_release+0x10d/0x1c0 drivers/staging/media/usbvision/usbvision-video.c:1357 usbvision_radio_close.cold+0x2b/0x74 drivers/staging/media/usbvision/usbvision-video.c:1130 v4l2_release+0x2e7/0x390 drivers/media/v4l2-core/v4l2-dev.c:455 __fput+0x33b/0x880 fs/file_table.c:280 task_work_run+0xf4/0x1b0 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x4e0/0x5a0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x7fa9c8a62270 Code: 73 01 c3 48 8b 0d 38 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 59 c1 20 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 ee fb ff ff 48 89 04 24 RSP: 002b:00007ffc535c4558 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fa9c8a62270 RDX: 00007ffc535c4580 RSI: 0000000080685600 RDI: 0000000000000003 RBP: 00007fa9c9092698 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000013 R13: 00007ffc535c46e0 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..