[Bug 214598] head -r333594: dump from ddb unsuccessful on a powerpc64 PowerMac G5. . .
bugzilla-noreply at freebsd.org
bugzilla-noreply at freebsd.org
Sat May 19 00:57:54 UTC 2018
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214598
Mark Millard <marklmi26-fbsd at yahoo.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|head -r308247: dump from |head -r333594: dump from
|ddb unsuccessful on a |ddb unsuccessful on a
|powerpc64 PowerMac G5. . . |powerpc64 PowerMac G5. . .
--- Comment #2 from Mark Millard <marklmi26-fbsd at yahoo.com> ---
A more modern version of head ( -r333594 ) gets the following
backtrace (again hand typed from a screen shot and with
leading zeros frequently omitted and the like):
db> dump
Dumping 11 MB (3 chunks)
chunk 0: 12MB (2868 pages) ... ok
chunk 1: 1MB (24 pages) ... ok
chunk 2: 1MB (2 pages)KDB: reentering
KDB: stack backtrace:
0xe7c930: at kdb_backtrace+0x68
0xe7ca40: at kdb_reenter+0x54
0xe7cab0: at trap+0x8f0
0xe7cbd0: at powerpc_interrupt+0x74
0xe7cc20: kernel DSI read trap @0xe000000000022ff8
by memcpy+0x148:
srr1=0x9000000000001032
r1 = 0xe7ced0
cr = 0x40002224
xer = 0x20000000
ctr = 0x200
r2 = 0x11e4000
sr = 0x40000000
0xe7ced0: at 0xc00000006ab17fc
0xe7cf00: at bus_dmamap_load_ccb+0xb0
0xe7cf30: at bus_dmamap_load_sync+0xb0
0xe7cf80: at ata_dmaload+0x200
0xe7d010: at ata_begin_transaction+0x250
0xe7d0a0: at ataaction+0x4b8
0xe7d140: at xpt_run_devq+0x334
0xe7d210: at xpt_action_default+0x63c
0xe7d2c0: at ata_action+0x58
0xe7d300: at xpt_action+0x40
0xe7d330: at cam_periph_runccb+0xbc
0xe7d3c0: at adadump+0x27c
0xe7d580: at dump_write+0x110
0xe7d5f0: at _dump_append+0x34
0xe7d630: at dump_append+0x9c
0xe7d670: at dumpsys_cb_dumpdata+0x144
0xe7d750: at dumpsys_foreach_chunk+0x68
0xe7d7a0: at dumpsys_generic+0x2a0
0xe7d880: at doadump+0xc8
0xe7d8c0: at db_dump+0x38
0xe7d930: at db_command+0x13c
0xe7da60: at db_command_loop+0x9c
0xe7dae0: at db_trap+0xfc
0xe7dc50: at kdb_trap+0x1a8
0xe7dd10: at db_trap_glue+0x70
0xe7dd40: at dbtrap+0x134
0x0a3390: at kdb_enter+0x60
0x0a3410: at kdb_break+0x3c
0x0a3440: at scgetc+0x978
0x0a34f0: at sckdbevent+0x1ec
0x0a3580: at kdbmux_intr+0x8c
0x0a35c0: at kdbmux_kdb_intr+0x4c
0x0a35f0: at taskqueue_run_locked+0xb0
0x0a3690: at taskqueue_run+0x9c
0x0a36e0: at taskqueue_swi_giant_run+0x28
0x0a3710: at intr_event_execute_handlers+0x224
0x0a3790: at ithread_loop+0x138
0x0a3860: at fork_exit+0xb0
0x0a38f0: at fork_trampoline+0x18
0x0a3920: at -0x4
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