Just happened again. This time without sshd involvement. Any ideas what
I could try or should do to narrow this down? Otherwise I'll downgrade
to a snap before k2k20 to see whether that makes the machine stabler.
ddb{0}> bt
mi_switch() at mi_switch+0x26f
uvm_pagezero_thread(ffff8000ffff93c8) at uvm_pagezero_thread+0x68
end trace frame: 0x0, count: -2
ddb{0}> mach ddbcpu 1
Stopped at x86_ipi_db+0x12: leave
ddb{1}> bt
x86_ipi_db(ffff80001fa78ff0) at x86_ipi_db+0x12
x86_ipi_handler() at x86_ipi_handler+0x80
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
acpicpu_idle() at acpicpu_idle+0x11f
sched_idle(ffff80001fa78ff0) at sched_idle+0x27e
end trace frame: 0x0, count: -5
ddb{1}> mach ddbcpu 2
Stopped at x86_ipi_db+0x12: leave
ddb{2}> bt
x86_ipi_db(ffff80001fa81ff0) at x86_ipi_db+0x12
x86_ipi_handler() at x86_ipi_handler+0x80
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff8219da64) at __mp_lock+0x72
wakeup_n(ffffffff8219d60c,ffffffff) at wakeup_n+0x2d
uvm_pmr_freepages(fffffd800395fa80,1) at uvm_pmr_freepages+0x1f4
pmap_do_remove(fffffd8077577708,e4d53ec000,e4d53ed000,0) at pmap_do_remove+0x41
3
uvm_unmap_remove(fffffd8060a79cd0,e4d53ec000,e4d53ed000,ffff80001fd37cd8,0,1) a
t uvm_unmap_remove+0x22b
sys_munmap(ffff80001fca82a0,ffff80001fd37d40,ffff80001fd37da0) at sys_munmap+0x
ff
syscall(ffff80001fd37e10) at syscall+0x389
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe51d0, count: -11
ddb{2}> mach ddbcpu 3
Stopped at x86_ipi_db+0x12: leave
ddb{3}> bt
x86_ipi_db(ffff80001fa8aff0) at x86_ipi_db+0x12
x86_ipi_handler() at x86_ipi_handler+0x80
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
acpicpu_idle() at acpicpu_idle+0x11f
sched_idle(ffff80001fa8aff0) at sched_idle+0x27e
end trace frame: 0x0, count: -5
ddb{3}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
2110 402557 69465 0 7 0x2 sshd
54617 34903 77233 1001 3 0x90 select sshd
77233 448945 69465 0 3 0x92 poll sshd
45851 338514 1 0 3 0x100083 ttyin getty
88994 13624 1 0 3 0x100098 poll cron
83154 480943 1 0 3 0x80 kqread apmd
37544 150086 88351 95 3 0x100092 kqread smtpd
16250 510079 88351 103 3 0x100092 kqread smtpd
10620 431313 88351 95 3 0x100092 kqread smtpd
99695 239522 88351 95 3 0x100092 kqread smtpd
2672 223243 88351 95 3 0x100092 kqread smtpd
98858 407878 88351 95 3 0x100092 kqread smtpd
88351 501 1 0 3 0x100080 kqread smtpd
3874 281143 1 77 3 0x100090 poll dhcpd
69465 402905 1 0 3 0x80 select sshd
53975 211675 1 0 3 0x100080 poll ntpd
34811 343278 65264 83 3 0x100092 poll ntpd
65264 294362 1 83 3 0x100092 poll ntpd
76552 347729 1 53 3 0x90 kqread unbound
20270 495567 77850 74 3 0x100092 bpf pflogd
77850 322700 1 0 3 0x80 netio pflogd
42902 13995 9120 73 3 0x100090 kqread syslogd
9120 384777 1 0 3 0x100082 netio syslogd
63653 414020 1 77 3 0x100090 poll dhclient
15130 233569 1 0 3 0x80 poll dhclient
39265 122806 26444 115 3 0x100092 kqread slaacd
71937 438037 26444 115 3 0x100092 kqread slaacd
26444 127118 1 0 3 0x100080 kqread slaacd
27598 371963 0 0 3 0x14200 bored smr
53953 323249 0 0 7 0x14200 zerothread
2955 520496 0 0 3 0x14200 aiodoned aiodoned
59963 311164 0 0 3 0x14200 syncer update
78206 49265 0 0 3 0x14200 cleaner cleaner
26063 461537 0 0 3 0x14200 reaper reaper
2963 150166 0 0 3 0x14200 pgdaemon pagedaemon
38882 92867 0 0 3 0x14200 bored crynlk
16443 512417 0 0 3 0x14200 bored crypto
63884 223587 0 0 3 0x14200 bored sensors
52209 152850 0 0 3 0x14200 mmctsk sdmmc0
76525 379022 0 0 3 0x14200 usbtsk usbtask
31703 337384 0 0 3 0x14200 usbatsk usbatsk
89586 431518 0 0 3 0x40014200 acpi0 acpi0
*55880 44355 0 0 7 0x40014200 idle3
8698 467962 0 0 3 0x40014200 idle2
89954 3892 0 0 7 0x40014200 idle1
87616 511496 0 0 3 0x14200 bored softnet
9968 159402 0 0 3 0x14200 bored systqmp
55879 267484 0 0 3 0x14200 bored systq
10646 50886 0 0 3 0x40014200 bored softclock
40600 190017 0 0 3 0x40014200 idle0
1 161404 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{3}> show uvmexp
Current UVM status:
pagesize=4096 (0x1000), pagemask=0xfff, pageshift=12
471063 VM pages: 10549 active, 104285 inactive, 1 wired, 247020 free (30888 z
ero)
min 10% (25) anon, 10% (25) vnode, 5% (12) vtext
freemin=15702, free-target=20936, inactive-target=0, wired-max=157021
faults=8540169, traps=8207572, intrs=11940165, ctxswitch=14104410 fpuswitch=0
softint=13150561, syscalls=10201912, kmapent=10
fault counts:
noram=0, noanon=0, noamap=0, pgwait=0, pgrele=0
ok relocks(total)=146824(148612), anget(retries)=4225335(0), amapcopy=27736
82
neighbor anon/obj pg=617264/5677776, gets(lock/unlock)=1834261/148612
cases: anon=3809096, anoncow=416239, obj=1520154, prcopy=312319, przero=248
2346
daemon and swap counts:
woke=0, revs=0, scans=0, obscans=0, anscans=0
busy=0, freed=0, reactivate=0, deactivate=0
pageouts=0, pending=0, nswget=0
nswapdev=1
swpages=227757, swpginuse=0, swpgonly=0 paging=0
kernel pointers:
objs(kern)=0xffffffff8217c870
