kern/56994: wm(4) panic on attach in interrupt_distribute, sometimes

[tnn%nygren.pp.se@localhost]

>Number:         56994
>Category:       kern
>Synopsis:       wm(4) panic on attach in interrupt_distribute, sometimes
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Sep 04 15:45:00 +0000 2022
>Originator:     Tobias Nygren
>Release:        9.99.99
>Organization:
NetBSD
>Environment:
9.99.99 aarch64
>Description:
Sometimes it boots OK but more than half of the time it panics.
This started sometime between 2022-07-16 and now.
Reverted to the old kernel meanwhile.

addr2line -e netbsd.gdb ffffc00000113074
/usr/src/sys/dev/pci/if_wm.c:6153

ident netbsd.gdb | grep if_wm
     $NetBSD: if_wm.c,v 1.763 2022/08/12 10:59:42 riastradh Exp $

wm0 at pci4 dev 0 function 0: Intel i82574L (rev. 0x00)
panic: Trap: Data Abort (EL1): Translation Fault L0 with read access for 0000000000002000: pc ffffc0000000347c: ldr x1, [x20]
 
cpu0: Begin traceback...
trace fp ffffc00000fece50
fp ffffc00000fece80 vpanic() at ffffc000004de1ec netbsd:vpanic+0x17c
fp ffffc00000fecef0 panic() at ffffc000004de2f4 netbsd:panic+0x44
fp ffffc00000fecf80 data_abort_handler() at ffffc000000aaddc netbsd:data_abort_handler+0x1ec
tf ffffc00000fecff0 el1_trap() at ffffc000000ac784 netbsd:el1_vectors+0x784
---- Data Abort (EL1): trapframe 0xffffc00000fecff0 (304 bytes) ----
...
------------------------------------------------
fp ffffc00000fed320 interrupt_distribute() at ffffc0000000347c netbsd:interrupt_distribute+0x1c
fp ffffc00000fed390 wm_attach() at ffffc00000113074 netbsd:wm_attach+0x714


dmesg output from previous kernel:
wm0 at pci4 dev 0 function 0, 64-bit DMA: Intel i82574L (rev. 0x00)
wm0: for TX and RX interrupting at irq 8193 (MSI-X vec 0)
wm0: for TX and RX interrupting at irq 8194 (MSI-X vec 1)
wm0: for LINK interrupting at irq 8195 (MSI-X vec 2)
wm0: PCI-Express bus
wm0: 2048 words FLASH, version 1.8.0, Image Unique ID 0000ffff
wm0: ASPM L0s and L1 are disabled to workaround the errata.
wm0: Ethernet address 00:1b:41:01:0f:56
wm0: 0x224080<FLASH,PCIE,ASF_FIRM,WOL>
makphy0 at wm0 phy 1: Marvell 88E1149 Gigabit PHY, rev. 1
>How-To-Repeat:
reboot a few times

>Fix: