kern/58808: NetBSD 10.0_STABLE: file system corruption after ticket 985

[uklaus%hgb-leipzig.de@localhost]

>Number:         58808
>Category:       kern
>Synopsis:       NetBSD 10.0_STABLE: file system corruption after ticket 985
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Nov 03 11:00:01 +0000 2024
>Originator:     Uwe Klaus
>Release:        NetBSD 10.0_STABLE
>Organization:
>Environment:
NetBSD rpi4 10.0_STABLE NetBSD 10.0_STABLE (GENERIC64) #38: Thu Oct  29 17:45:51 CEST 2024  root@rpi4:/usr/obj.evbarm/sys/arch/evbarm/compile/GENERIC64 evbarm
>Description:
I'm following 10.0_STABLE on a Raspberry Pi4 since several months.
The file system is on a Kingston 512GB sd card (canvas go! plus, SDCG3/512GBSP). 

[     1.000004] sdmmc1 at sdhc1 slot 0
[     1.529342] sdmmc1: SD card status: 4-bit, C10, U3, V30, A2
[     1.529342] ld1 at sdmmc1: <0x9f:0x5449:SD512:0x61:0x4938055c:0x179>
[     1.538289] ld1: 461 GB, 60208 cyl, 255 head, 63 sec, 512 bytes/sect x 967245824 sectors
[     1.548290] ld1: GPT GUID: 5a277550-751a-42b6-b282-524be2b0d6b3
[     1.548290] dk0 at ld1: "EFI", 163840 blocks at 8192, type: msdos
[     1.548290] dk1 at ld1: "netbsd-root", 5332992 blocks at 172032, type: ffs
[     1.561200] dk2 at ld1: "netbsd-usr", 167780352 blocks at 5505024, type: ffs
[     1.561200] dk3 at ld1: "swap", 16777216 blocks at 173285376, type: swap
[     1.574909] dk4 at ld1: "netbsd-var", 16777216 blocks at 190062592, type: ffs
[     1.582025] dk5 at ld1: "rpi4", 734003200 blocks at 206839808, type: ffs
[     1.582025] ld1: 4-bit width, High-Speed/SDR25, 50.000 MHz

The system ran stable until the latest tickets were applied. The kernel now panics and the filesystems get corrupted. 

I suspect ticket #985. My last "good" kernel is from Oct 4th. With recent userland and the older kernel the Pi runs stable again.
>How-To-Repeat:
-
>Fix:
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