[Bug 272119] bnxt: instapanic with debug kernel

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272119

            Bug ID: 272119
           Summary: bnxt: instapanic with debug kernel
           Product: Base System
           Version: 13.1-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: asomers@FreeBSD.org

When I boot a system based on 13.1-RELEASE with a debug kernel, it instapanics
while probing PCI devices.  The panic happens early in the boot, before any RC
scripts are run.  So it's independent of my system configuration, and also I
can't get a core dump.

Here is the stack trace printed to the serial console

panic: general protection fault
cpuid = 0
time = 1
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xffffffff82f3b580
vpanic() at vpanic+0x17f/frame 0xffffffff82f3b5d0
panic() at panic+0x43/frame 0xffffffff82f3b630
trap_fatal() at trap_fatal+0x385/frame 0xffffffff82f3b690
calltrap() at calltrap+0x8/frame 0xffffffff82f3b690
--- trap 0x9, rip = 0xffffffff80c757e0, rsp = 0xffffffff82f3b760, rbp =
0xffffffff82f3b7b0 ---
taskqgroup_attach() at taskqgroup_attach+0x150/frame 0xffffffff82f3b7b0
bnxt_attach_pre() at bnxt_attach_pre+0x78c/frame 0xffffffff82f3b820
iflib_device_register() at iflib_device_register+0x134/frame 0xffffffff82f3b8b0
iflib_device_attach() at iflib_device_attach+0xb5/frame 0xffffffff82f3b8e0
device_attach() at device_attach+0x3c1/frame 0xffffffff82f3b920
device_probe_and_attach() at device_probe_and_attach+0x70/frame
0xffffffff82f3b950
bus_generic_attach() at bus_generic_attach+0x18/frame 0xffffffff82f3b970
pci_attach() at pci_attach+0xe0/frame 0xffffffff82f3b9b0
acpi_pci_attach() at acpi_pci_attach+0x19/frame 0xffffffff82f3ba00
device_attach() at device_attach+0x3c1/frame 0xffffffff82f3ba40
device_probe_and_attach() at device_probe_and_attach+0x70/frame
0xffffffff82f3ba70
bus_generic_attach() at bus_generic_attach+0x18/frame 0xffffffff82f3ba90
acpi_pcib_pci_attach() at acpi_pcib_pci_attach+0xa0/frame 0xffffffff82f3bad0
device_attach() at device_attach+0x3c1/frame 0xffffffff82f3bb10
device_probe_and_attach() at device_probe_and_attach+0x70/frame
0xffffffff82f3bb40
bus_generic_attach() at bus_generic_attach+0x18/frame 0xffffffff82f3bb60
pci_attach() at pci_attach+0xe0/frame 0xffffffff82f3bba0
acpi_pci_attach() at acpi_pci_attach+0x19/frame 0xffffffff82f3bbf0
device_attach() at device_attach+0x3c1/frame 0xffffffff82f3bc30
device_probe_and_attach() at device_probe_and_attach+0x70/frame
0xffffffff82f3bc60
bus_generic_attach() at bus_generic_attach+0x18/frame 0xffffffff82f3bc80
acpi_pcib_acpi_attach() at acpi_pcib_acpi_attach+0x42d/frame 0xffffffff82f3bce0
device_attach() at device_attach+0x3c1/frame 0xffffffff82f3bd20
device_probe_and_attach() at device_probe_and_attach+0x70/frame
0xffffffff82f3bd50
bus_generic_attach() at bus_generic_attach+0x18/frame 0xffffffff82f3bd70
acpi_probe_children() at acpi_probe_children+0x207/frame 0xffffffff82f3bdd0
acpi_attach() at acpi_attach+0x9a6/frame 0xffffffff82f3be60
device_attach() at device_attach+0x3c1/frame 0xffffffff82f3bea0
device_probe_and_attach() at device_probe_and_attach+0x70/frame
0xffffffff82f3bed0
bus_generic_attach() at bus_generic_attach+0x18/frame 0xffffffff82f3bef0
device_attach() at device_attach+0x3c1/frame 0xffffffff82f3bf30
device_probe_and_attach() at device_probe_and_attach+0x70/frame
0xffffffff82f3bf60
bus_generic_new_pass() at bus_generic_new_pass+0xed/frame 0xffffffff82f3bf90
bus_set_pass() at bus_set_pass+0x46/frame 0xffffffff82f3bfc0
configure() at configure+0x9/frame 0xffffffff82f3bfd0
mi_startup() at mi_startup+0xdc/frame 0xffffffff82f3bff0
btext() at btext+0x22

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