[Another example panic. Again no dump. But I have what
a top -PCwaopid froze at this time.]
On 2017-Apr-27, at 4:22 PM, Mark Millard <markmi at dsl-only.net> wrote:
> Unfortunately for this FYI the attempt to produce a dump
> failed and so all the information that I have is what I
> first captured from the console output: a backtrace.
>
> The context was head -r317015 on a Pine64+ 2GB. At the
> time I was experimenting with trying to build a vm.raw
> from my own build of FreeBSD. The (root) file system
> is on a USB SSD off of a powered USB hub.
>
> panic: ARM64TODO: reclaim_pv_chunk
> cpuid = 1
> time = 1493332968
> KDB: stack backtrace:
> db_trace_self() at db_trace_self_wrapper+0x28
> pc = 0xffff000000605cc0 lr = 0xffff0000000869cc
> sp = 0xffff000083ba4f00 fp = 0xffff000083ba5110
>
> db_trace_self_wrapper() at vpanic+0x164
> pc = 0xffff0000000869cc lr = 0xffff00000031d464
> sp = 0xffff000083ba5120 fp = 0xffff000083ba5190
>
> vpanic() at panic+0x4c
> pc = 0xffff00000031d464 lr = 0xffff00000031d2fc
> sp = 0xffff000083ba51a0 fp = 0xffff000083ba5220
>
> panic() at reclaim_pv_chunk+0x10
> pc = 0xffff00000031d2fc lr = 0xffff00000061a234
> sp = 0xffff000083ba5230 fp = 0xffff000083ba5230
>
> reclaim_pv_chunk() at get_pv_entry+0x240
> pc = 0xffff00000061a234 lr = 0xffff000000616184
> sp = 0xffff000083ba5240 fp = 0xffff000083ba5260
>
> get_pv_entry() at pmap_enter+0x694
> pc = 0xffff000000616184 lr = 0xffff0000006156a0
> sp = 0xffff000083ba5270 fp = 0xffff000083ba5300
>
> pmap_enter() at vm_fault_hold+0x28c
> pc = 0xffff0000006156a0 lr = 0xffff0000005b9740
> sp = 0xffff000083ba5310 fp = 0xffff000083ba5460
>
> vm_fault_hold() at vm_fault+0x70
> pc = 0xffff0000005b9740 lr = 0xffff0000005b9464
> sp = 0xffff000083ba5470 fp = 0xffff000083ba54a0
>
> vm_fault() at data_abort+0xe0
> pc = 0xffff0000005b9464 lr = 0xffff00000061ad94
> sp = 0xffff000083ba54b0 fp = 0xffff000083ba5560
>
> data_abort() at handle_el1h_sync+0x70
> pc = 0xffff00000061ad94 lr = 0xffff000000607870
> sp = 0xffff000083ba5570 fp = 0xffff000083ba5680
>
> handle_el1h_sync() at kern_select+0x9fc
> pc = 0xffff000000607870 lr = 0xffff00000037db3c
> sp = 0xffff000083ba5690 fp = 0xffff000083ba58f0
>
> kern_select() at sys_select+0x5c
> pc = 0xffff00000037db3c lr = 0xffff00000037dc58
> sp = 0xffff000083ba5900 fp = 0xffff000083ba5930
>
> sys_select() at do_el0_sync+0xa48
> pc = 0xffff00000037dc58 lr = 0xffff00000061b91c
> sp = 0xffff000083ba5940 fp = 0xffff000083ba5a70
>
> do_el0_sync() at handle_el0_sync+0x6c
> pc = 0xffff00000061b91c lr = 0xffff0000006079e8
> sp = 0xffff000083ba5a80 fp = 0xffff000083ba5b90
>
> handle_el0_sync() at 0x4948c
> pc = 0xffff0000006079e8 lr = 0x000000000004948c
> sp = 0xffff000083ba5ba0 fp = 0x0000ffffffffd960
This time I got to record from top:
(swap is on a swap partition)
(pid 49888's SIZE vs. RES and SWAP might be interesting)
(as might the Active figure)
last pid: 48988; load averages: 0.64, 0.44, 0.38
up 0+04:21:01 19:19:50
32 processes: 2 running, 30 sleeping
CPU 0: 13.2% user, 0.0% nice, 23.2% system, 0.3% interrupt, 63.3% idle
CPU 1: 4.6% user, 0.0% nice, 23.9% system, 0.0% interrupt, 71.5% idle
CPU 2: 2.1% user, 0.0% nice, 23.2% system, 0.0% interrupt, 74.8% idle
CPU 3: 3.3% user, 0.0% nice, 23.8% system, 0.0% interrupt, 72.8% idle
Mem: 1618M Active, 17M Inact, 315M Wired, 204M Buf, 15M Free
Swap: 6144M Total, 34M Used, 6110M Free, 348K Out
PID USERNAME THR PRI NICE SIZE RES SWAP STATE C TIME CPU
COMMAND
48988 root 4 31 0 651M 27048K 0K RUN 0 0:03 87.60% xz
-T 0
/usr/obj/DESTDIRs/vmimage-aarch64/vmimages/FreeBSD-12.0-CURRENT-arm64-aarch64.raw
11983 root 1 22 0 5068K 0K 0K wait 3 0:00 0.00%
make vm-image vm-install DESTDIR=/usr/obj/DESTDIRs/vmimage-aarch64 (<make>)
11981 root 1 42 0 7320K 0K 1516K wait 1 0:00 0.00% sh
/root/sys_build_scripts.aarch64-host/make_noscript_aarch64_nodebug_clang_bootstrap-aarch64-host.sh
vm-image vm-install
11980 root 1 20 0 6656K 1548K 0K select 0 0:02 0.00%
[script]
11977 root 1 30 0 7320K 0K 1516K wait 3 0:00 0.00%
/bin/sh
/root/sys_build_scripts.aarch64-host/make_aarch64_nodebug_clang_bootstrap-aarch64-host.sh
vm-image vm-install DEST
2694 root 1 20 0 8804K 2072K 0K CPU2 2 0:07 0.17%
top -PCwaopid
827 root 1 20 0 7320K 0K 360K wait 0 0:00 0.00% su
(<sh>)
826 markmi 1 22 0 10372K 0K 1532K wait 3 0:00 0.00% su
(<su>)
820 markmi 1 24 0 7320K 0K 1516K wait 1 0:00 0.00%
-sh (<sh>)
819 markmi 1 20 0 18416K 1152K 0K select 1 0:21 0.00%
sshd: markmi@pts/1 (sshd)
816 root 1 20 0 18416K 3276K 0K select 0 0:00 0.00%
sshd: markmi [priv] (sshd)
765 root 1 20 0 7320K 0K 224K wait 2 0:00 0.00% su
(<sh>)
764 markmi 1 23 0 10372K 0K 1532K wait 0 0:00 0.00% su
(<su>)
758 markmi 1 31 0 7320K 0K 1516K wait 1 0:00 0.00%
-sh (<sh>)
757 markmi 1 20 0 18416K 228K 904K select 3 0:01 0.01%
sshd: markmi@pts/0 (sshd)
754 root 1 25 0 18416K 3276K 0K select 1 0:00 0.00%
sshd: markmi [priv] (sshd)
746 root 1 27 0 7320K 1532K 0K ttyin 0 0:00 0.00%
-sh (sh)
745 root 1 20 0 10372K 0K 1532K wait 1 0:00 0.00%
login [pam] (<login>)
700 root 1 20 0 6948K 0K 168K nanslp 1 0:00 0.00%
/usr/sbin/cron -s (<cron>)
696 smmsp 1 20 0 10460K 0K 184K pause 0 0:00 0.00%
sendmail: Queue runner@00:30:00 for /var/spool/clientmqueue (<sendmail>)
693 root 1 20 0 10460K 1392K 0K select 1 0:00 0.03%
sendmail: accepting connections (sendmail)
690 root 1 20 0 15800K 968K 0K select 2 0:00 0.00%
/usr/sbin/sshd
661 root 1 20 0 6656K 344K 0K select 2 0:01 0.00%
/usr/sbin/powerd
658 root 2 20 0 12788K 12672K 0K select 0 0:02 0.01%
/usr/sbin/ntpd -g -c /etc/ntp.conf -p /var/run/ntpd.pid -f /var/db/ntpd.drift
620 root 32 52 0 6384K 1100K 0K rpcsvc 1 0:00 0.00%
nfsd: server (nfsd)
619 root 1 52 0 6384K 704K 0K select 1 0:00 0.00%
nfsd: master (nfsd)
617 root 1 20 0 6684K 688K 0K select 1 0:00 0.00%
/usr/sbin/mountd -r
478 root 1 20 0 6676K 596K 0K select 3 0:00 0.00%
/usr/sbin/rpcbind
469 root 1 20 0 6680K 572K 0K select 2 0:00 0.00%
/usr/sbin/syslogd -s
396 root 1 20 0 9580K 32K 0K select 0 0:00 0.00%
/sbin/devd
308 _dhcp 1 20 0 6800K 532K 0K select 2 0:00 0.00%
dhclient: awg0 (dhclient)
307 root 1 52 0 6800K 424K 0K select 2 0:00 0.00%
dhclient: awg0 [priv] (dhclient)
And here is the backtrace:
timeout stopping cpus
panic: ARM64TODO: reclaim_pv_chunk
cpuid = 0
time = 1493345992
KDB: stack backtrace:
db_trace_self() at db_trace_self_wrapper+0x28
pc = 0xffff000000605cc0 lr = 0xffff0000000869cc
sp = 0xffff000083d301d0 fp = 0xffff000083d303e0
db_trace_self_wrapper() at vpanic+0x164
pc = 0xffff0000000869cc lr = 0xffff00000031d464
sp = 0xffff000083d303f0 fp = 0xffff000083d30460
vpanic() at panic+0x4c
pc = 0xffff00000031d464 lr = 0xffff00000031d2fc
sp = 0xffff000083d30470 fp = 0xffff000083d304f0
panic() at reclaim_pv_chunk+0x10
pc = 0xffff00000031d2fc lr = 0xffff00000061a234
sp = 0xffff000083d30500 fp = 0xffff000083d30500
reclaim_pv_chunk() at get_pv_entry+0x240
pc = 0xffff00000061a234 lr = 0xffff000000616184
sp = 0xffff000083d30510 fp = 0xffff000083d30530
get_pv_entry() at pmap_enter+0x694
pc = 0xffff000000616184 lr = 0xffff0000006156a0
sp = 0xffff000083d30540 fp = 0xffff000083d305d0
pmap_enter() at vm_fault_hold+0x28c
pc = 0xffff0000006156a0 lr = 0xffff0000005b9740
sp = 0xffff000083d305e0 fp = 0xffff000083d30730
vm_fault_hold() at vm_fault+0x70
pc = 0xffff0000005b9740 lr = 0xffff0000005b9464
sp = 0xffff000083d30740 fp = 0xffff000083d30770
vm_fault() at data_abort+0xe0
pc = 0xffff0000005b9464 lr = 0xffff00000061ad94
sp = 0xffff000083d30780 fp = 0xffff000083d30830
data_abort() at handle_el0_sync+0x6c
pc = 0xffff00000061ad94 lr = 0xffff0000006079e8
sp = 0xffff000083d30840 fp = 0xffff000083d30950
handle_el0_sync() at 0x400a3de4
pc = 0xffff0000006079e8 lr = 0x00000000400a3de4
sp = 0xffff000083d30960 fp = 0x0000ffffbfdfcd30
KDB: enter: panic
[ thread pid 48988 tid 100230 ]
Stopped at kdb_enter+0x44: undefined d4200000
===
Mark Millard
markmi at dsl-only.net
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