panic writing sdmmc on BeagleBoneGreen

["John D. Baker" <jdbaker%mylinuxisp.com@localhost>]

While compiling packages, at some point not yet understood, my
BeagleBoneGreen will panic as shown below.  The machine has booted from
and all writes are directed to the microSD card and filesystems on
"ld0N".

NetBSD bbg0.technoskunk.fur 7.99.25 NetBSD 7.99.25 (BEAGLEBONE) #0: Sun Jan 17 00:47:23 CST 2016  sysop%x3650.technoskunk.fur@localhost:/r0/build/current/obj/evbearmv7hf-el/sys/arch/evbarm/compile/BEAGLEBONE evbarm

I also saw this with the last available build from nyftp.netbsd.org.

Mutex error: mutex_vector_enter: locking against myself

lock address : 0x000000009ffd5d88
current cpu  :                  0
current lwp  : 0x000000009fdf50c0
owner field  : 0x0000000000010500 wait/spin:                0/1

panic: lock error: Mutex: mutex_vector_enter: locking against myself: lock 0x9ffd5d88 cpu 0 lwp 0x9fdf50c0
cpu0: Begin traceback...
0x9fdedba4: netbsd:db_panic+0xc
0x9fdedbd4: netbsd:vpanic+0x174
0x9fdedbec: netbsd:snprintf
0x9fdedc2c: netbsd:lockdebug_abort+0x68
0x9fdedc4c: netbsd:obiosdhc_edma_done+0x24
0x9fdedca4: netbsd:edma_intr+0x27c
0x9fdedcc4: netbsd:pic_dispatch+0x28
0x9fdedd4c: netbsd:pic_do_pending_ints+0x3a0
0x9fdede1c: netbsd:irq_entry+0x68
0x9fdede6c: netbsd:sdhc_exec_command+0x238
0x9fdede8c: netbsd:sdmmc_mmc_command+0x40
0x9fdedf14: netbsd:sdmmc_mem_write_block_subr+0xbc
0x9fdedf5c: netbsd:sdmmc_mem_write_block+0xf4
0x9fdedf84: netbsd:ld_sdmmc_dobio+0x54
0x9fdedfac: netbsd:sdmmc_task_thread+0x74
cpu0: End traceback...

dumping to dev 92,1 offset 1056127
dump Skipping crash dump on recursive panic
panic: lock error: Mutex: mutex_vector_enter: locking against myself: lock 0x9ffd5d88 cpu 0 lwp 0x9fdf50c0
cpu0: Begin traceback...
0x9fded674: netbsd:db_panic+0xc
0x9fded6a4: netbsd:vpanic+0x174
0x9fded6bc: netbsd:snprintf
0x9fded6fc: netbsd:lockdebug_abort+0x68
0x9fded74c: netbsd:sdhc_exec_command+0x24
0x9fded76c: netbsd:sdmmc_mmc_command+0x40
0x9fded7f4: netbsd:sdmmc_mem_write_block_subr+0xbc
0x9fded83c: netbsd:sdmmc_mem_write_block+0xf4
0x9fded854: netbsd:ld_dumpblocks+0x34
0x9fded8bc: netbsd:dk_dump+0x288
0x9fded8ec: netbsd:lddump+0x80
0x9fdedb14: netbsd:cpu_dump+0x100
0x9fdedb6c: netbsd:dodumpsys+0x104
0x9fdedba4: netbsd:dumpsys+0x18
0x9fdedbd4: netbsd:vpanic+0x180
0x9fdedbec: netbsd:snprintf
0x9fdedc2c: netbsd:lockdebug_abort+0x68
0x9fdedc4c: netbsd:obiosdhc_edma_done+0x24
0x9fdedca4: netbsd:edma_intr+0x27c
0x9fdedcc4: netbsd:pic_dispatch+0x28
0x9fdedd4c: netbsd:pic_do_pending_ints+0x3a0
0x9fdede1c: netbsd:irq_entry+0x68
0x9fdede6c: netbsd:sdhc_exec_command+0x238
0x9fdede8c: netbsd:sdmmc_mmc_command+0x40
0x9fdedf14: netbsd:sdmmc_mem_write_block_subr+0xbc
0x9fdedf5c: netbsd:sdmmc_mem_write_block+0xf4
0x9fdedf84: netbsd:ld_sdmmc_dobio+0x54
0x9fdedfac: netbsd:sdmmc_task_thread+0x74
cpu0: End traceback...
rebooting...

"kern" problem or "port-evbarm" problem?  (I suspect the latter.)
Anyone else seeing something like this?


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