kern/58587: crash during boot in case wireless switch turned off

[a.e.hecht%t-online.de@localhost]

>Number:         58587
>Category:       kern
>Synopsis:       crash during boot in case wireless switch turned off
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 12 18:25:00 +0000 2024
>Originator:     Andreas Hecht
>Release:        NetBSD 10.0_STABLE
>Organization:
N/A
>Environment:
System: NetBSD X230.domain.home 10.0_STABLE NetBSD 10.0_STABLE (GENERIC) #0: Thu Aug 8 07:34:54 UTC 2024 mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:
Netbsd 10.0 STABLE from August 8 crashes during boot on a Lenovo X230 in case
the wireless switch (hardware switch on left side) is turned off. The system
boots fine in if the wireless switch in turned on. A GENERIC kernel build from
yesterday's netbsd github mirror sources shows the same behavior.

Here is the corresponding backtrace:

crash> bt
__kernel_end() at 0
kern_reboot() at sys_reboot
db_sync_cmd() at db_sifting_cmd
db_command() at db_command+0x125
db_command_loop() at db_command_loop+0x9c
db_trap() at db_trap+0xe9
kdb_trap() at kdb_trap+0x106
trap() at trap+0x530
--- trap (number 6) ---
iwm_softintr() at iwm_softintr+0x9e5
softint_dispatch() at softint_dispatch+0x17a
DDB lost frame for Xsoftintr+0x4c, trying 0xffffc004301e40f0
Xsoftintr() at Xsoftintr+0x4c
--- interrupt ---
0:

These are the last kernel messages before the crash occurs:

crash> dmesg | tail
[   3.8499330] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[   3.8499330] [drm] Driver supports precise vblank timestamp query.
[   3.8499330] i915drmkms0: interrupting at msi5 vec 0 (i915drmkms0)
[   3.8499330] fatal page fault in supervisor mode
[   3.8499330] trap type 6 code 0 rip 0xffffffff803d652b cs 0x8 rflags 0x10202 cr2 0x4c ilevel 0x
4 rsp 0xffffc004301e3fc0
[   3.8499330] curlwp 0xffffec783ac71480 pid 0.3 lowest kstack 0xffffc004301df2c0

[   3.8499330] dumping to dev 0,1 (offset=483895, size=4133817):
[   3.8499330] dump

This laptop has an Intel AC 7260 wireless card installed:

crash> dmesg | grep iwm0
[   1.0266814] iwm0 at pci2 dev 0 function 0: Intel Dual Band Wireless AC 7260 (rev. 0xbb)
[   1.0266814] iwm0: interrupting at msi3 vec 0

Openbsd 7.4 and Freebsd 14.0 are booting fine on the same hardware when the
wireless switch is turned off.
>How-To-Repeat:
On a Lenovo X230 with NetBSD 10.0_STABLE installed turn off the wireless switch and boot.
>Fix:
???