Broken ab_pkmd write

gistfile1.txt

[lrvick@qatan crosshatch-PQ3A.190801.002]$ ls -lah crosshatch-avb_pkmd.bin 
-rw-r--r-- 1 lrvick lrvick 520 Aug  6  2019 crosshatch-avb_pkmd.bin

[lrvick@qatan crosshatch-PQ3A.190801.002]$ sudo ./fastboot flash avb_custom_key crosshatch-avb_pkmd.bin
target reported max download size of 268435456 bytes
Sending 'avb_custom_key' (0 KB)...
OKAY [  0.120s]
Writing 'avb_custom_key'...
FAILED (remote: Failed flash avb custom key Device Error)
Finished. Total time: 0.687s

[lrvick@qatan crosshatch-PQ3A.190801.002]$ ./fastboot --version | head -n1fastboot version 28.0.0 rc1-08060409

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build@android:~/keys/crosshatch$ ls
avb.pem           kernel.key  media.x509.pem     releasekey.pk8       shared.x509.pem  verity_key.pub
avb_pkmd.bin.old  kernel.pem  platform.pk8       releasekey.x509.pem  verity.pk8       verity_user.der.x509
kernel.crt        media.pk8   platform.x509.pem  shared.pk8           verity.x509.pem
build@android:~/keys/crosshatch$ avbtool extract_public_key --key avb.pem --output avb_pkmd.bin
build@android:~/keys/crosshatch$ sha256sum avb_pkmd.bin
5d1e9f305a15b61e597e9ccc9b0ebb3aea0b30662d27b61b0333f4b40d9476cd  avb_pkmd.bin
build@android:~/keys/crosshatch$ sha256sum avb_pkmd.bin.old
5d1e9f305a15b61e597e9ccc9b0ebb3aea0b30662d27b61b0333f4b40d9476cd  avb_pkmd.bin.old
build@android:~/keys/crosshatch$

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[lrvick@qatan crosshatch-PQ3A.190801.002]$ sudo ./fastboot getvar all

(bootloader) product:crosshatch
(bootloader) serialno:893Y03NBJ
(bootloader) variant:MSM USF
(bootloader) max-download-size:0x10000000
(bootloader) slot-suffixes:_a,_b
(bootloader) version-bootloader:b1c1-0.1-5578427
(bootloader) version-baseband:g845-00017-190312-B-5369743
(bootloader) secure-boot:PRODUCTION
(bootloader) secure:yes
(bootloader) hw-revision:MP1.0
(bootloader) slot-count:2
(bootloader) current-slot:a
(bootloader) unlocked:yes
(bootloader) nos-production:yes
(bootloader) off-mode-charge:1
(bootloader) slot-retry-count:a:3
(bootloader) slot-unbootable:a:no
(bootloader) slot-successful:a:no
(bootloader) slot-retry-count:b:0
(bootloader) slot-unbootable:b:no
(bootloader) slot-successful:b:no
(bootloader) battery-voltage:4217
(bootloader) battery-soc-ok:yes
(bootloader) partition-type:ssd:raw
(bootloader) partition-size:ssd:0x2000
(bootloader) partition-type:misc:raw
(bootloader) partition-size:misc:0x100000
(bootloader) partition-type:keystore:raw
(bootloader) partition-size:keystore:0x80000
(bootloader) partition-type:frp:raw
(bootloader) partition-size:frp:0x80000
(bootloader) partition-type:system_a:raw
(bootloader) partition-size:system_a:0xB0000000
(bootloader) partition-type:system_b:raw
(bootloader) partition-size:system_b:0xB0000000
(bootloader) partition-type:product_a:raw
(bootloader) partition-size:product_a:0x12C00000
(bootloader) partition-type:product_b:raw
(bootloader) partition-size:product_b:0x12C00000
(bootloader) partition-type:vendor_a:raw
(bootloader) partition-size:vendor_a:0x30000000
(bootloader) partition-type:vendor_b:raw
(bootloader) partition-size:vendor_b:0x30000000
(bootloader) partition-type:boot_a:raw
(bootloader) partition-size:boot_a:0x4000000
(bootloader) partition-type:boot_b:raw
(bootloader) partition-size:boot_b:0x4000000
(bootloader) partition-type:modem_a:raw
(bootloader) partition-size:modem_a:0x5000000
(bootloader) partition-type:modem_b:raw
(bootloader) partition-size:modem_b:0x5000000
(bootloader) partition-type:apdp_a:raw
(bootloader) partition-size:apdp_a:0x40000
(bootloader) partition-type:apdp_b:raw
(bootloader) partition-size:apdp_b:0x40000
(bootloader) partition-type:msadp_a:raw
(bootloader) partition-size:msadp_a:0x40000
(bootloader) partition-type:msadp_b:raw
(bootloader) partition-size:msadp_b:0x40000
(bootloader) partition-type:klog:raw
(bootloader) partition-size:klog:0x400000
(bootloader) partition-type:metadata:raw
(bootloader) partition-size:metadata:0x1000000
(bootloader) partition-type:userdata:raw
(bootloader) partition-size:userdata:0x1BCA7FB000
(bootloader) partition-type:xbl_a:raw
(bootloader) partition-size:xbl_a:0x380000
(bootloader) partition-type:xbl_config_a:raw
(bootloader) partition-size:xbl_config_a:0x20000
(bootloader) partition-type:xbl_b:raw
(bootloader) partition-size:xbl_b:0x380000
(bootloader) partition-type:xbl_config_b:raw
(bootloader) partition-size:xbl_config_b:0x20000
(bootloader) partition-type:ALIGN_TO_128K_1:raw
(bootloader) partition-size:ALIGN_TO_128K_1:0x1A000
(bootloader) partition-type:cdt:raw
(bootloader) partition-size:cdt:0x20000
(bootloader) partition-type:ddr:raw
(bootloader) partition-size:ddr:0x100000
(bootloader) partition-type:modemcal:raw
(bootloader) partition-size:modemcal:0x200000
(bootloader) partition-type:uefivar:raw
(bootloader) partition-size:uefivar:0x100000
(bootloader) partition-type:sec:raw
(bootloader) partition-size:sec:0x4000
(bootloader) partition-type:aop_a:raw
(bootloader) partition-size:aop_a:0x80000
(bootloader) partition-type:tz_a:raw
(bootloader) partition-size:tz_a:0x200000
(bootloader) partition-type:hyp_a:raw
(bootloader) partition-size:hyp_a:0x80000
(bootloader) partition-type:abl_a:raw
(bootloader) partition-size:abl_a:0x200000
(bootloader) partition-type:keymaster_a:raw
(bootloader) partition-size:keymaster_a:0x80000
(bootloader) partition-type:cmnlib_a:raw
(bootloader) partition-size:cmnlib_a:0x80000
(bootloader) partition-type:cmnlib64_a:raw
(bootloader) partition-size:cmnlib64_a:0x80000
(bootloader) partition-type:devcfg_a:raw
(bootloader) partition-size:devcfg_a:0x20000
(bootloader) partition-type:qupfw_a:raw
(bootloader) partition-size:qupfw_a:0x10000
(bootloader) partition-type:vbmeta_a:raw
(bootloader) partition-size:vbmeta_a:0x10000
(bootloader) partition-type:dtbo_a:raw
(bootloader) partition-size:dtbo_a:0x800000
(bootloader) partition-type:storsec_a:raw
(bootloader) partition-size:storsec_a:0x20000
(bootloader) partition-type:aop_b:raw
(bootloader) partition-size:aop_b:0x80000
(bootloader) partition-type:tz_b:raw
(bootloader) partition-size:tz_b:0x200000
(bootloader) partition-type:hyp_b:raw
(bootloader) partition-size:hyp_b:0x80000
(bootloader) partition-type:abl_b:raw
(bootloader) partition-size:abl_b:0x200000
(bootloader) partition-type:keymaster_b:raw
(bootloader) partition-size:keymaster_b:0x80000
(bootloader) partition-type:cmnlib_b:raw
(bootloader) partition-size:cmnlib_b:0x80000
(bootloader) partition-type:cmnlib64_b:raw
(bootloader) partition-size:cmnlib64_b:0x80000
(bootloader) partition-type:devcfg_b:raw
(bootloader) partition-size:devcfg_b:0x20000
(bootloader) partition-type:qupfw_b:raw
(bootloader) partition-size:qupfw_b:0x10000
(bootloader) partition-type:vbmeta_b:raw
(bootloader) partition-size:vbmeta_b:0x10000
(bootloader) partition-type:dtbo_b:raw
(bootloader) partition-size:dtbo_b:0x800000
(bootloader) partition-type:storsec_b:raw
(bootloader) partition-size:storsec_b:0x20000
(bootloader) partition-type:ALIGN_TO_128K_2:raw
(bootloader) partition-size:ALIGN_TO_128K_2:0x1A000
(bootloader) partition-type:persist:raw
(bootloader) partition-size:persist:0x2800000
(bootloader) partition-type:modemst1:raw
(bootloader) partition-size:modemst1:0x200000
(bootloader) partition-type:modemst2:raw
(bootloader) partition-size:modemst2:0x200000
(bootloader) partition-type:fsg:raw
(bootloader) partition-size:fsg:0x200000
(bootloader) partition-type:fsc:raw
(bootloader) partition-size:fsc:0x20000
(bootloader) partition-type:devinfo:raw
(bootloader) partition-size:devinfo:0x1000
(bootloader) partition-type:dip:raw
(bootloader) partition-size:dip:0x100000
(bootloader) partition-type:spunvm:raw
(bootloader) partition-size:spunvm:0x800000
(bootloader) partition-type:limits:raw
(bootloader) partition-size:limits:0x1000
(bootloader) partition-type:toolsfv:raw
(bootloader) partition-size:toolsfv:0x100000
(bootloader) partition-type:logfs:raw
(bootloader) partition-size:logfs:0x800000
(bootloader) partition-type:sti:raw
(bootloader) partition-size:sti:0x200000
(bootloader) partition-type:ImageFv:raw
(bootloader) partition-size:ImageFv:0x200000
(bootloader) partition-type:splash:raw
(bootloader) partition-size:splash:0x4000
all: 
Finished. Total time: 0.393s