[Bug 220358] panic in tcp_lro_flush_all

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220358

--- Comment #11 from iz-rpi03 at 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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