This happens on clean -CURRENT on an EdgeRouter PRO 8:
Index: sys/arch/octeon/conf/GENERIC.MP
===================================================================
RCS file: /cvs/src/sys/arch/octeon/conf/GENERIC.MP,v
retrieving revision 1.1
diff -u -p -r1.1 GENERIC.MP
--- sys/arch/octeon/conf/GENERIC.MP 1 Jun 2013 17:09:41 -0000 1.1
+++ sys/arch/octeon/conf/GENERIC.MP 21 Aug 2020 18:08:02 -0000
@@ -3,6 +3,8 @@
include "arch/octeon/conf/GENERIC"
option MULTIPROCESSOR
-#option MP_LOCKDEBUG
+option MP_LOCKDEBUG
+option WITNESS
+option DEBUG
cpu* at mainbus?
Although this message is under MP_LOCKDEBUG, that plus WITNESS is not
enough to trigger it: DEBUG is the relevant option and disabling it
makes the kernel boot, albeit much slower.
dmesg and ddb output below.
OpenBSD 6.7-current (GENERIC.MP) #1: Fri Aug 21 18:04:20 UTC 2020
[email protected]:/usr/src/sys/arch/octeon/compile/GENERIC.MP
real mem = 2147483648 (2048MB)
avail mem = 2080833536 (1984MB)
random: good seed from bootblocks
mainbus0 at root: board 20003 rev 0.14
cpu0 at mainbus0: CN61xx CPU rev 0.1 1000 MHz, Software FP emulation
cpu0: cache L1-I 37KB 37 way D 32KB 32 way, L2 1024KB 8 way
cpu0: L1 set size 1024:1024
cpu0: L1 line size 128:128
cpu0: L2 line size 128
cpu0: cache configuration 0
cpu0: virtual alias mask 0x0
cpu0: config register ffffffff8000c48a, status register 00000000000097a0
cpu1 at mainbus0: CN61xx CPU rev 0.1 1000 MHz, Software FP emulation
cpu1: cache L1-I 37KB 37 way D 32KB 32 way, L2 1024KB 8 way
cpu1: L1 set size 1024:1024
cpu1: L1 line size 128:128
cpu1: L2 line size 128
cpu1: cache configuration 0
cpu1: virtual alias mask 0x0
cpu1: config register ffffffff8000c48a, status register 00000000000097a0
clock0 at mainbus0: int 5
octcrypto0 at mainbus0
iobus0 at mainbus0
octeon_pcibus_match, no PCI host function detected.
simplebus0 at iobus0: "soc"
octciu0 at simplebus0
octgpio0 at simplebus0: 20 pins, xbit 16
octsmi0 at simplebus0
octsmi1 at simplebus0
octpip0 at simplebus0
octgmx0 at octpip0 interface 0
cnmac0 at octgmx0: SGMII, address 24:a4:3c:3c:3b:d0
ukphy0 at cnmac0 phy 4: Generic IEEE 802.3u media interface, rev. 3: OUI
0x180361, model 0x0004
cnmac1 at octgmx0: SGMII, address 24:a4:3c:3c:3b:d1
ukphy1 at cnmac1 phy 5: Generic IEEE 802.3u media interface, rev. 3: OUI
0x180361, model 0x0004
cnmac2 at octgmx0: SGMII, address 24:a4:3c:3c:3b:d2
brgphy0 at cnmac2 phy 0: BCM5482 10/100/1000baseT PHY, rev. 2
cnmac3 at octgmx0: SGMII, address 24:a4:3c:3c:3b:d3
brgphy1 at cnmac3 phy 1: BCM5482 10/100/1000baseT PHY, rev. 2
octgmx1 at octpip0 interface 1
cnmac4 at octgmx1: SGMII, address 24:a4:3c:3c:3b:d4
ukphy2 at cnmac4 phy 0: Generic IEEE 802.3u media interface, rev. 3: OUI
0x180361, model 0x0004
cnmac5 at octgmx1: SGMII, address 24:a4:3c:3c:3b:d5
ukphy3 at cnmac5 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI
0x180361, model 0x0004
cnmac6 at octgmx1: SGMII, address 24:a4:3c:3c:3b:d6
ukphy4 at cnmac6 phy 2: Generic IEEE 802.3u media interface, rev. 3: OUI
0x180361, model 0x0004
cnmac7 at octgmx1: SGMII, address 24:a4:3c:3c:3b:d7
ukphy5 at cnmac7 phy 3: Generic IEEE 802.3u media interface, rev. 3: OUI
0x180361, model 0x0004
"i2c" at simplebus0 not configured
"i2c" at simplebus0 not configured
com0 at simplebus0: ns16550a, 64 byte fifo
com0: console
com1 at simplebus0: ns16550a, 64 byte fifo
com1: probed fifo depth: 0 bytes
"spi" at simplebus0 not configured
octmmc0 at simplebus0
sdmmc0 at octmmc0: 8-bit, mmc high-speed
"bootbus" at simplebus0 not configured
"dma-engine" at simplebus0 not configured
"dma-engine" at simplebus0 not configured
octuctl0 at simplebus0
ehci0 at octuctl0
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Octeon EHCI root hub" rev 2.00/1.00
addr 1
ohci0 at octuctl0, version 1.0
usb1 at ohci0: USB revision 1.0
uhub1 at usb1 configuration 1 interface 0 "Octeon OHCI root hub" rev 1.00/1.00
addr 1
octrng0 at iobus0 base 0x1400000000000 irq 0
octpcie0 at iobus0: 2 ports
octpcie0 port 1: reset timeout
Timecounters tick every 10.000 msec
scsibus0 at sdmmc0: 2 targets, initiator 0
sd0 at scsibus0 targ 1 lun 0: <Sandisk, SEM04G, 0000> removable
sd0: 3776MB, 512 bytes/sector, 7733248 sectors
dev=0x2 chrdev=0x902 rawdev=0x902
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on sd0a (c6e0c1054d42413a.a) swap on sd0b dump on sd0b
dev=0x0 chrdev=0x900 rawdev=0x902
WARNING: CHECK AND RESET THE DATE!
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
init: copying out path `/sbin/init' 11
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
exec_md_map: p 0x9800000001a8b058 fppgva 0x2d06ae4000
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu0
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
mips64_ipi_nop on cpu1
__mp_lock_spin: 0xffffffff8170f400 lock spun out
db_enter_ddb 0: state 0 pause 0
Sdtbo_pepnetde ra_tddb 1: s t a t e db1_ enptaeurse+ 01
4: jr ra x
db_enter+0x8: nop
ddb{0}> bt
db_enter+0x4
(c000000000004870,b93f2fff3d1cf1f1,c7d5acfbd4b37a88,81fe909faca48d96) ra
0xffffffff812563c8 sp 0x980000000f0b7a80, sz 0
__mp_lock+0x1f0
(c000000000004870,be252191e519715c,c7d5acfbd4b37a88,81fe909faca48d96) ra
0xffffffff812cc3f8 sp 0x980000000f0b7a80, sz 64
dosoftint+0x70
(c000000000004870,91a8fe504e27195b,c7d5acfbd4b37a88,81fe909faca48d96) ra
0xffffffff8123e02c sp 0x980000000f0b7ac0, sz 48
interrupt+0x1d4
(c000000000004870,a2ba2e2bdb1e7799,c7d5acfbd4b37a88,81fe909faca48d96) ra
0xffffffff8146a93c sp 0x980000000f0b7af0, sz 80
k_intr+0xcc
(980000000f0b7b68,a2ba2e2bdb1e7799,c7d5acfbd4b37a88,ffffffff81138d40) ra 0x0
sp 0x980000000f0b7b40, sz 0
(KERNEL INTERRUPT)
setsoftintr0+0x10
(980000000f0b7b68,a2ba2e2bdb1e7799,c7d5acfbd4b37a88,ffffffff81138d40) ra
0xffffffff811166d0 sp 0x980000000f0b7cc0, sz 0
octciu_splx+0x140
(980000000f0b7b68,8d133c76a6230488,c7d5acfbd4b37a88,ffffffff81138d40) ra
0xffffffff8123e530 sp 0x980000000f0b7cc0, sz 80
splx+0x48 (980000000f0b7b68,7e6edce7ef6926b7,c7d5acfbd4b37a88,ffffffff81138d40)
ra 0xffffffff81256d5c sp 0x980000000f0b7d10, sz 16
mtx_leave+0xfc
(980000000f0b7b68,777347a4fa46e628,c7d5acfbd4b37a88,ffffffff81138d40) ra
0xffffffff812f808c sp 0x980000000f0b7d20, sz 32
uvm_pagezero_thread+0xe4
(980000000f0b7b68,777347a4fa46e628,c7d5acfbd4b37a88,ffffffff81138d40) ra
0xffffffff8129ba74 sp 0x980000000f0b7d40, sz 112
proc_trampoline+0x1c
(980000000f0b7b68,777347a4fa46e628,c7d5acfbd4b37a88,ffffffff81138d40) ra 0x0
sp 0x980000000f0b7db0, sz 0
User-level: pid 98070
ddb{0}> show all locks
CPU 1:
exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff817e4238)
Process 19060 (init) thread 0x9800000001a8b608 (430868)
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8170f488)
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
19060 430868 1 0 7 0x1005 init
40588 217437 0 0 3 0x14200 bored smr
7196 101196 0 0 3 0x40014200 idle1
*98070 408616 0 0 7 0x14200 zerothread
62753 304753 0 0 3 0x14200 aiodoned aiodoned
37625 21886 0 0 3 0x14200 syncer update
43671 372171 0 0 3 0x14200 cleaner cleaner
53309 199018 0 0 3 0x14200 reaper reaper
80147 341017 0 0 3 0x14200 pgdaemon pagedaemon
93317 318601 0 0 3 0x14200 bored crynlk
91591 234017 0 0 3 0x14200 bored crypto
48535 161966 0 0 3 0x14200 usbtsk usbtask
75715 474993 0 0 3 0x14200 usbatsk usbatsk
60111 119416 0 0 3 0x14200 mmctsk sdmmc0
72819 353144 0 0 3 0x14200 bored softnet
48915 250876 0 0 3 0x14200 bored systqmp
37175 429426 0 0 3 0x14200 bored systq
10098 143061 0 0 3 0x40014200 bored softclock
42758 21280 0 0 3 0x40014200 idle0
1 83579 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
