i haven't yet tracked this arm-specific crash down yet:
; ape/patch
<hit delete>
patch 103361: suicide: sys: trap: fault read va=0x43 pc=0x19d70
; acid 103361
/proc/103361/text:arm plan 9 executable
/sys/lib/acid/port
/sys/lib/acid/arm
acid: stk()
_notetramp(u=0xffffffff,sig=0x2,hdlr=0x787c)+0x30
/sys/src/ape/lib/ap/arm/notetramp.c:27
_notehandler(u=0xffffffff,msg=0x5ffffdc0)+0xb8
/sys/src/ape/lib/ap/plan9/signal.c:105
_READ+0x1c /sys/src/ape/lib/ap/plan9/9read.c:10
_notehandler(u=0xffffffff,msg=0x5ffffdc0)+0xb8
/sys/src/ape/lib/ap/plan9/signal.c:105
i=0x1
_READ+0x1c /sys/src/ape/lib/ap/plan9/9read.c:10
acid: regs()
R0 0x00000002 R1 0x00022314 R2 0x00025350
R3 0x0001d790 R4 0x00022314 R5 0xffffffff
R6 0x00025350 R7 0xffffffff R8 0x00000000
R9 0x609c1038 R10 0x6000f000 R11 0xfffffffc
R12 0x0001dffc R13 0x5ffffd8c R14 0x00013e2c
R15 0x00019d70
acid: pcstack
0x00025350
acid: _notetramp:u
0x5ffffda4
acid: *0x5ffffda4
0xffffffff
acid: _notehandler:u
0x5ffffdb8
acid: *0x5ffffdb8
0xffffffff