pvrusb2: ***WARNING*** pvrusb2 driver initialization failed due to the failure of one or more sub-device kernel modules.
pvrusb2: You need to resolve the failing condition before this driver can function.  There should be some earlier messages giving more information about the problem.
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sysfs group 'power' not found for kobject 'i2c-0'
WARNING: CPU: 1 PID: 109 at fs/sysfs/group.c:254 sysfs_remove_group fs/sysfs/group.c:254 [inline]
WARNING: CPU: 1 PID: 109 at fs/sysfs/group.c:254 sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:245
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 109 Comm: pvrusb2-context Not tainted 5.2.0-rc6+ #13
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+0xca/0x13e lib/dump_stack.c:113
 panic+0x292/0x6c9 kernel/panic.c:219
 __warn.cold+0x20/0x4b kernel/panic.c:576
 report_bug+0x262/0x2a0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986
RIP: 0010:sysfs_remove_group fs/sysfs/group.c:254 [inline]
RIP: 0010:sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:245
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 4a d0 85 e8 16 1a 8c ff <0f> 0b eb 95 e8 22 46 dc ff e9 d2 fe ff ff 48 89 df e8 15 46 dc ff
RSP: 0018:ffff8881d43c7c40 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffffff85f24140 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8127ef3d RDI: ffffed103a878f7a
RBP: 0000000000000000 R08: ffff8881d4289800 R09: ffffed103b665d30
R10: ffffed103b665d2f R11: ffff8881db32e97f R12: ffff8881cf2e4338
R13: ffffffff85f246e0 R14: ffff8881cf2e4878 R15: ffff8881cf2e4380
 dpm_sysfs_remove+0x97/0xb0 drivers/base/power/sysfs.c:735
 device_del+0x172/0xb80 drivers/base/core.c:2251
 device_unregister+0x11/0x30 drivers/base/core.c:2306
 i2c_del_adapter drivers/i2c/i2c-core-base.c:1596 [inline]
 i2c_del_adapter+0x3f2/0x550 drivers/i2c/i2c-core-base.c:1535
 pvr2_i2c_core_done+0x69/0xb6 drivers/media/usb/pvrusb2/pvrusb2-i2c-core.c:652
 pvr2_hdw_destroy+0x179/0x370 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2660
 pvr2_context_destroy+0x84/0x230 drivers/media/usb/pvrusb2/pvrusb2-context.c:70
 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline]
 pvr2_context_thread_func+0x657/0x860 drivers/media/usb/pvrusb2/pvrusb2-context.c:158
 kthread+0x30b/0x410 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..