https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220358
--- Comment #11 from iz-rp...@hs-karlsruhe.de ---
I can add to this, that a 32-bit ARM (Raspberrr-PI) kernel r320571 panics
immediately when a ssh connect is attempted.
This behaviour is repeatable (3 panics out of 3 attempts).
Just for the record:
login: panic: Undefined instruction in kernel.
time = 1499024534
KDB: stack backtrace:
$a.6() at $a.6
pc = 0xc05fe050 lr = 0xc01577b0 (db_trace_self_wrapper+0x30)
sp = 0xdc65a818 fp = 0xdc65a930
db_trace_self_wrapper() at db_trace_self_wrapper+0x30
pc = 0xc01577b0 lr = 0xc02f9130 (vpanic+0xc0)
sp = 0xdc65a938 fp = 0xdc65a958
r4 = 0x00000100 r5 = 0xdc65a96c
r6 = 0xc061b004 r7 = 0x00000001
vpanic() at vpanic+0xc0
pc = 0xc02f9130 lr = 0xc02f9070 (vpanic)
sp = 0xdc65a960 fp = 0xdc65a964
r4 = 0x00000000 r5 = 0x00000000
r6 = 0x00000010 r7 = 0xffffff80
r8 = 0xdc65a9f0 r9 = 0x00000001
r10 = 0xc2caafdc
vpanic() at vpanic
pc = 0xc02f9070 lr = 0xc061afec ($d.14)
sp = 0xdc65a96c fp = 0xdc65a9e8
r4 = 0xffffff80 r5 = 0xdc65a9f0
r6 = 0x00000001 r7 = 0xc2caafdc
r8 = 0xdc65a964 r9 = 0xc02f9070
r10 = 0xdc65a96c
$d.14() at $d.14
pc = 0xc061afec lr = 0xc0600b94 (exception_exit)
sp = 0xdc65a9f0 fp = 0xdc65aa88
r4 = 0xa0000013 r5 = 0xc2caaa78
r6 = 0x00000010 r7 = 0xc2bd4700
r8 = 0xc2c51824 r9 = 0xc2caa430
r10 = 0x00000000
exception_exit() at exception_exit
pc = 0xc0600b94 lr = 0xc0389544 (solisten_wakeup+0x28)
sp = 0xdc65aa80 fp = 0xdc65aa88
r0 = 0xc2caaa78 r1 = 0x00000000
r2 = 0x00000001 r3 = 0xc2caaa90
r4 = 0x00000001 r5 = 0xc2caaa78
r6 = 0x00000010 r7 = 0xc2bd4700
r8 = 0xc2c51824 r9 = 0xc2caa430
r10 = 0x00000000 r12 = 0x00000000
_end() at 0xc2caafdc
pc = 0xc2caafdc lr = 0xc0389544 (solisten_wakeup+0x28)
sp = 0xdc65aa80 fp = 0xdc65aa88
KDB: enter: panic
[ thread pid 13 tid 100033 ]
Stopped at $d.12: ldrb r15, [r15, r15, ror r15]!
db>
db> show proc
Process 13 (usb) at 0xc288a398:
state: NORMAL
uid: 0 gids: 0
parent: pid 0 at 0xc0783548
ABI: null
threads: 6
100031 D - 0xc291b02c [usbus0]
100032 D - 0xc291b05c [usbus0]
100033 Run CPU 0 [usbus0]
100034 D - 0xc291b0bc [usbus0]
100035 D - 0xc291b0ec [usbus0]
100069 D - 0xc2a9da28 [smsc0]
db> show thread
Thread 100033 at 0xc2936000:
proc (pid 13): 0xc288a398
name: usbus0
stack: 0xdc659000-0xdc65afff
flags: 0x1000004 pflags: 0x200000
state: RUNNING (CPU 0)
priority: 28
container lock: sched lock (0xc07713c4)
last voluntary switch: 1 ms ago
last involuntary switch: 0 ms ago
db>
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