port-evbarm/54580: Raspberry Pi 3 kernel panic "TAILQ_*" when performing I/O to SD card

[cryintothebluesky%gmail.com@localhost]

>Number:         54580
>Category:       port-evbarm
>Synopsis:       Raspberry Pi 3 kernel panic "TAILQ_*" when performing I/O to SD card
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-evbarm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Sep 27 15:10:00 +0000 2019
>Originator:     Sad Clouds
>Release:        
>Organization:
>Environment:
NetBSD rp3 9.0_BETA NetBSD 9.0_BETA (GENERIC64) #0: Wed Sep 25 20:27:50 BST 2019  roman@z600:/netbsd_build/obj.evbarm64/sys/arch/evbarm/compile/GENERIC64 evbarm
>Description:
I often notice the following kernel panics on Raspberry Pi 3 Model B Plus Rev 1.3 when unpacking pkgsrc.tar.gz on SD card

Sep 27 13:09:15 rp3 /netbsd: [ 2431.8876795] panic: TAILQ_* forw 0xffff00000003c6d8 /netbsd_build/netbsd-9-src/sys/dev/sdmmc/sdmmc.c:271
Sep 27 13:09:15 rp3 /netbsd: [ 2431.8876795] cpu0: Begin traceback...
Sep 27 13:09:15 rp3 /netbsd: [ 2431.8876795] trace fp ffffffc032c59d80
Sep 27 13:09:15 rp3 /netbsd: [ 2431.8876795] fp ffffffc032c59da0 vpanic() at ffffffc0004a61d8 netbsd:vpanic+0x198
Sep 27 13:09:15 rp3 /netbsd: [ 2431.8876795] fp ffffffc032c59e00 panic() at ffffffc0004a62a8 netbsd:panic+0x48
Sep 27 13:09:15 rp3 /netbsd: [ 2431.8876795] fp ffffffc032c59e90 sdmmc_task_thread() at ffffffc0000ca2c8 netbsd:sdmmc_task_thread+0x178
Sep 27 13:09:15 rp3 /netbsd: [ 2431.8876795] cpu0: End traceback...
Sep 27 13:09:15 rp3 /netbsd: 
Sep 27 13:09:15 rp3 /netbsd: [ 2431.8876795] dump to dev 92,1 not possible

>How-To-Repeat:
Boot from SD card and unpack pkgsrc.tar.gz
>Fix: