Hi Uttkarsh and Thinh,
>> Call Stack:
>> CPU1: CPU2:
>> gadget_unbind_driver dwc3_suspend_common
>> dw3_gadget_stop dwc3_gadget_suspend
>> dwc3_disconnect_gadget
typo: dw3_gadget_stop/dwc3_gadget_stop
> Do you have the dmesg log of this NULL pointer dereference?
> Thanks,
> Thinh
We also encountered similar stack traces.
[ 5.130593][ T100] Unable to handle kernel NULL pointer
dereference at virtual address 0000000000000028
[ 5.130912][ T100] Call trace:
[ 5.130914][ T100] dwc3_gadget_suspend+0x88/0xf0
[ 5.130918][ T100] dwc3_suspend_common+0x58/0x230
[ 5.130921][ T100] dwc3_runtime_suspend+0x34/0x50
[ 5.130925][ T100] pm_generic_runtime_suspend+0x40/0x58
[ 5.130928][ T100] __rpm_callback+0x94/0x3e0
[ 5.130931][ T100] rpm_suspend+0x2e4/0x720
[ 5.130934][ T100] __pm_runtime_suspend+0x6c/0x100
[ 5.130937][ T100] dwc3_runtime_idle+0x48/0x64
[ 5.130941][ T100] rpm_idle+0x20c/0x310
[ 5.130944][ T100] pm_runtime_work+0x80/0xac
[ 5.130947][ T100] process_one_work+0x1e4/0x43c
[ 5.130952][ T100] worker_thread+0x25c/0x430
[ 5.130956][ T100] kthread+0x104/0x1d4
[ 5.130959][ T100] ret_from_fork+0x10/0x20
(gdb) list *dwc3_gadget_suspend+0x88
0xffffffc0089b2318 is in dwc3_gadget_suspend (drivers/usb/dwc3/gadget.c:3729).
...
3729 if (dwc->async_callbacks && dwc->gadget_driver->disconnect) {
...
Thanks,
Kuen-Han
