kern/55718: error reading fsbn when trying to mount file system from SD card

[venture37%geeklan.co.uk@localhost]

>Number:         55718
>Category:       kern
>Synopsis:       error reading fsbn when trying to mount file system from SD card
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Oct 11 21:45:00 +0000 2020
>Originator:     Sevan Janiyan
>Release:        HEAD
>Organization:
>Environment:
NetBSD 9.99.51 (GENERIC) #0: Sun Mar 22 17:35:29 UTC 2020
        mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/i386/compile/GENERIC
>Description:
SD card reader on a ThinkPad x60s:
sdhc0 at pci5 dev 0 function 2: Ricoh 5C822 PCI-CardBus Bridge/MS/SD/MMC/SC (rev. 0x18)
sdhc0: interrupting at ioapic0 pin 18
sdhc0: SDHC 1.0, rev 2, SDMA, 33000 kHz, 3.3V, 512 byte blocks
sdmmc0 at sdhc0 slot 0

Insert sd card into reader:
ld0 at sdmmc0: <0x28:0x4245:5bLGP:0x12:0x166406d4:0x124>
ld0: 15283 MB, 7762 cyl, 64 head, 63 sec, 512 bytes/sect x 31299584 sectors
ld0: 27367424 trailing sectors not covered by disklabel
ld0: 4-bit width, 25.000 MHz
ld0: 27367424 trailing sectors not covered by disklabel
ld0: 27367424 trailing sectors not covered by disklabel
ld0: 27367424 trailing sectors not covered by disklabel

Issue mount /dev/ld0a /mnt, abort and eject
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 67712; cn 33 tn 4 sn 0), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 67712; cn 33 tn 4 sn 0), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 67712; cn 33 tn 4 sn 0), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 67712; cn 33 tn 4 sn 0), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 67712; cn 33 tn 4 sn 0), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 67712; cn 33 tn 4 sn 0)
ld0: detached

re-issue mount /dev/ld0a /mnt, abort and eject
sdmmc0: sdmmc_select_card: error 60ld0 at sdmmc0: <0x28:0x4245:5bLGP:0x12:0x166406d4:0x124>
ld0: 15283 MB, 7762 cyl, 64 head, 63 sec, 512 bytes/sect x 31299584 sectors
ld0: 1-bit width, 25.000 MHz
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 128; cn 0 tn 2 sn 2), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 128; cn 0 tn 2 sn 2), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 128; cn 0 tn 2 sn 2), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 128; cn 0 tn 2 sn 2), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 128; cn 0 tn 2 sn 2), retrying
ld0a: error reading fsbn 128 of 128-143 (ld0 bn 128; cn 0 tn 2 sn 2)
ld0: detached




>How-To-Repeat:
Insert sd card into reader and try to mount fs, in this case on a thinkpad x60s
>Fix: