Seen about a dozen times on a box doing ospfd + ospf6d (for internal routes), bgpd (for default route) + isakmpd, shortly after startup after updating:
splassert: sorwakeup: want 5 have 4 Starting stack trace... splassert_check() at splassert_check+0x78 sorwakeup() at sorwakeup+0x27 timeout_run() at timeout_run+0x48 softclock() at softclock+0x14c softintr_dispatch() at softintr_dispatch+0x8b Xsoftclock() at Xsoftclock+0x1f --- interrupt --- end of kernel end trace frame: 0x51, count: 251 0x8: End of stack trace. # grep splassert:.sorwakeup /var/log/messages Sep 26 13:43:13 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:13 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:13 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:14 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:14 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:15 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:15 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:15 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:15 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:15 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:20 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:20 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:20 /bsd: splassert: sorwakeup: want 5 have 4 At this point it has stopped recurring. More logs in case the timing gives any clues: Sep 26 13:40:30 reboot: rebooted by sthen Sep 26 13:40:35 syslogd: exiting on signal 15 Sep 26 13:41:29 syslogd: start Sep 26 13:41:29 syslogd: sendto: Can't assign requested address Sep 26 13:41:29 syslogd: sendto: Can't assign requested address Sep 26 13:41:29 /bsd: OpenBSD 6.0-current (GENERIC.MP) #2492: Sun Sep 25 20:10:21 MDT 2016 Sep 26 13:41:29 /bsd: dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP .. Sep 26 13:41:36 isakmpd[81976]: sendmsg (14, 0x7f7ffffd30f0, 0): No route to host Sep 26 13:41:36 isakmpd[81976]: sendmsg (14, 0x7f7ffffd30f0, 0): No route to host Sep 26 13:41:43 isakmpd[81976]: message_recv: invalid cookie(s) aaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbb Sep 26 13:41:43 isakmpd[81976]: dropped message from xx.xxx.xx.210 port 500 due to notification type INVALID_COOKIE Sep 26 13:41:43 isakmpd[81976]: sendmsg (14, 0x7f7ffffd30f0, 0): No route to host Sep 26 13:41:43 last message repeated 2 times Sep 26 13:41:50 isakmpd[81976]: message_recv: invalid cookie(s) aaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbb Sep 26 13:41:50 isakmpd[81976]: dropped message from xx.xxx.xx.210 port 500 due to notification type INVALID_COOKIE Sep 26 13:41:50 isakmpd[81976]: sendmsg (14, 0x7f7ffffd30f0, 0): No route to host Sep 26 13:41:52 last message repeated 2 times Sep 26 13:41:59 isakmpd[81976]: message_recv: invalid cookie(s) aaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbb Sep 26 13:41:59 isakmpd[81976]: dropped message from xx.xxx.xx.210 port 500 due to notification type INVALID_COOKIE Sep 26 13:41:59 isakmpd[81976]: sendmsg (14, 0x7f7ffffd30f0, 0): No route to host Sep 26 13:42:03 isakmpd[81976]: sendmsg (14, 0x7f7ffffd30f0, 0): No route to host Sep 26 13:42:03 isakmpd[81976]: transport_send_messages: giving up on exchange peer-yy.yy.yyy.140-local-zzz.zz.zzz.64, no response from peer yy.yy.yyy.140:500 Sep 26 13:42:03 isakmpd[81976]: sendmsg (14, 0x7f7ffffd30f0, 0): No route to host Sep 26 13:42:03 isakmpd[81976]: transport_send_messages: giving up on exchange peer-xx.xxx.xx.210-local-zzz.zz.zzz.64, no response from peer xx.xxx.xx.210:500 Sep 26 13:42:10 isakmpd[81976]: message_recv: invalid cookie(s) aaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbb Sep 26 13:42:10 isakmpd[81976]: dropped message from xx.xxx.xx.210 port 500 due to notification type INVALID_COOKIE Sep 26 13:42:10 isakmpd[81976]: sendmsg (14, 0x7f7ffffd30f0, 0): No route to host Sep 26 13:43:13 /bsd: splassert: sorwakeup: want 5 have 4 Sep 26 13:43:13 /bsd: Starting stack trace... OpenBSD 6.0-current (GENERIC.MP) #2492: Sun Sep 25 20:10:21 MDT 2016 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 8557764608 (8161MB) avail mem = 8293900288 (7909MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.8 @ 0x7f3b9000 (51 entries) bios0: vendor American Megatrends Inc. version "1.0c" date 02/27/2014 bios0: Supermicro A1SAi acpi0 at bios0: rev 2 acpi0: sleep states S0 S5 acpi0: tables DSDT FACP FPDT SPMI MCFG WDAT UEFI APIC BDAT HPET SSDT HEST BERT ERST EINJ acpi0: wakeup devices PEX1(S0) PEX2(S0) PEX3(S0) EHC1(S0) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpimcfg0 at acpi0 addr 0xe0000000, bus 0-255 acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.44 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT cpu0: 1MB 64b/line 16-way L2 cache cpu0: smt 0, core 0, package 0 mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges cpu0: apic clock running at 100MHz cpu0: mwait min=64, max=64, C-substates=0.2.0.0.0.0.3, IBE cpu1 at mainbus0: apid 2 (application processor) cpu1: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT cpu1: 1MB 64b/line 16-way L2 cache cpu1: smt 0, core 1, package 0 cpu2 at mainbus0: apid 4 (application processor) cpu2: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz cpu2: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT cpu2: 1MB 64b/line 16-way L2 cache cpu2: smt 0, core 2, package 0 cpu3 at mainbus0: apid 6 (application processor) cpu3: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz cpu3: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT cpu3: 1MB 64b/line 16-way L2 cache cpu3: smt 0, core 3, package 0 cpu4 at mainbus0: apid 8 (application processor) cpu4: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz cpu4: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT cpu4: 1MB 64b/line 16-way L2 cache cpu4: smt 0, core 4, package 0 cpu5 at mainbus0: apid 10 (application processor) cpu5: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz cpu5: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT cpu5: 1MB 64b/line 16-way L2 cache cpu5: smt 0, core 5, package 0 cpu6 at mainbus0: apid 12 (application processor) cpu6: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz cpu6: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT cpu6: 1MB 64b/line 16-way L2 cache cpu6: smt 0, core 6, package 0 cpu7 at mainbus0: apid 14 (application processor) cpu7: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz cpu7: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT cpu7: 1MB 64b/line 16-way L2 cache cpu7: smt 0, core 7, package 0 ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins acpihpet0 at acpi0: 14318179 Hz acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 1 (PEX1) acpiprt2 at acpi0: bus 2 (BR04) acpiprt3 at acpi0: bus 3 (PEX2) acpiprt4 at acpi0: bus 4 (PEX3) acpicpu0 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS acpicpu1 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS acpicpu2 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS acpicpu3 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS acpicpu4 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS acpicpu5 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS acpicpu6 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS acpicpu7 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS "PNP0003" at acpi0 not configured "PNP0501" at acpi0 not configured "PNP0501" at acpi0 not configured "IPI0001" at acpi0 not configured "PNP0C33" at acpi0 not configured ipmi at mainbus0 not configured cpu0: Enhanced SpeedStep 2400 MHz: speeds: 2401, 2400, 2300, 2200, 2100, 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 vendor "Intel", unknown product 0x1f01 rev 0x02 ppb0 at pci0 dev 1 function 0 "Intel Atom C2000 PCIE" rev 0x02: msi pci1 at ppb0 bus 1 ppb1 at pci1 dev 0 function 0 "ASPEED Technology AST1150 PCI" rev 0x03 pci2 at ppb1 bus 2 vga1 at pci2 dev 0 function 0 "ASPEED Technology AST2000" rev 0x30 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) ppb2 at pci0 dev 2 function 0 "Intel Atom C2000 PCIE" rev 0x02: msi pci3 at ppb2 bus 3 xhci0 at pci3 dev 0 function 0 "Renesas uPD720201 xHCI" rev 0x03: msi usb0 at xhci0: USB revision 3.0 uhub0 at usb0 configuration 1 interface 0 "Renesas xHCI root hub" rev 3.00/1.00 addr 1 ppb3 at pci0 dev 3 function 0 "Intel Atom C2000 PCIE" rev 0x02: msi pci4 at ppb3 bus 4 pchb1 at pci0 dev 14 function 0 "Intel Atom C2000 RAS" rev 0x02 "Intel Atom C2000 RCEC" rev 0x02 at pci0 dev 15 function 0 not configured "Intel Atom C2000 SMBus" rev 0x02 at pci0 dev 19 function 0 not configured em0 at pci0 dev 20 function 0 "Intel I354 SGMII" rev 0x03: msi, address 00:25:90:f1:c1:34 em1 at pci0 dev 20 function 1 "Intel I354 SGMII" rev 0x03: msi, address 00:25:90:f1:c1:35 em2 at pci0 dev 20 function 2 "Intel I354 SGMII" rev 0x03: msi, address 00:25:90:f1:c1:36 em3 at pci0 dev 20 function 3 "Intel I354 SGMII" rev 0x03: msi, address 00:25:90:f1:c1:37 ehci0 at pci0 dev 22 function 0 "Intel Atom C2000 USB" rev 0x02: apic 2 int 23 usb1 at ehci0: USB revision 2.0 uhub1 at usb1 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ahci0 at pci0 dev 23 function 0 "Intel Atom C2000 AHCI" rev 0x02: msi, AHCI 1.3 scsibus1 at ahci0: 32 targets ahci1 at pci0 dev 24 function 0 "Intel Atom C2000 AHCI" rev 0x02: msi, AHCI 1.3 ahci1: port 0: 6.0Gb/s scsibus2 at ahci1: 32 targets sd0 at scsibus2 targ 0 lun 0: <ATA, INTEL SSDSC2BB08, D201> SCSI3 0/direct fixed naa.55cd2e404b6471bf sd0: 76319MB, 512 bytes/sector, 156301488 sectors, thin pcib0 at pci0 dev 31 function 0 "Intel Atom C2000 PCU" rev 0x02 ichiic0 at pci0 dev 31 function 3 "Intel Atom C2000 PCU SMBus" rev 0x02: apic 2 int 18 iic0 at ichiic0 sdtemp0 at iic0 addr 0x18: at30ts00 sdtemp1 at iic0 addr 0x1a: ts3000gb2 iic0: addr 0x2e 00=3c words 00=3c3c 01=0000 02=0000 03=0000 04=0000 05=0000 06=0000 07=0000 spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM ECC PC3-12800 with thermal sensor spdmem1 at iic0 addr 0x52: 4GB DDR3 SDRAM ECC PC3-12800 with thermal sensor isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo com1: console pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay0 pms0 at pckbc0 (aux slot) wsmouse0 at pms0 mux 0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 uhub2 at uhub1 port 1 configuration 1 interface 0 "Intel product 0x07db" rev 2.00/0.02 addr 2 uhub3 at uhub2 port 3 configuration 1 interface 0 "vendor 0x0000 product 0x0001" rev 2.00/0.00 addr 3 uhidev0 at uhub3 port 1 configuration 1 interface 0 "ATEN International product 0x2419" rev 1.10/1.00 addr 4 uhidev0: iclass 3/1 ukbd0 at uhidev0: 8 variable keys, 6 key codes wskbd1 at ukbd0 mux 1 wskbd1: connecting to wsdisplay0 uhidev1 at uhub3 port 1 configuration 1 interface 1 "ATEN International product 0x2419" rev 1.10/1.00 addr 4 uhidev1: iclass 3/1 ums0 at uhidev1: 3 buttons, Z dir wsmouse1 at ums0 mux 0 vscsi0 at root scsibus3 at vscsi0: 256 targets softraid0 at root scsibus4 at softraid0: 256 targets root on sd0a (7f0e094a72cc105d.a) swap on sd0b dump on sd0b