kernel: page fault trap, code=10 Stopped at acpi_pdirpa+0xd55ea: uvm_fault(0xfffffd806c3c4a68, 0xe9779, 0, 1) -> e kernel: page fault trap, code=0 Stopped at db_read_bytes+0x110: movzbl 0xffffffffffffffff(%r15),%eax TID PID UID PRFLAGS PFLAGS CPU COMMAND * 7364 1085 0 0x10 0x4000000 0 syz-executor 458092 96103 0 0x2 0 1 syz-executor db_read_bytes(e9779,1,ffff800036dade54) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff800036dae0f0) at db_ktrap+0x303 sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff800036dae0f0) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_clone(ffff800036dae3c8,ffff800036dae4c8,0) at rt_clone+0x98 sys/net/route.c:383 route_mpath(ffff800036dae4b0,fffffd807283e0f0,fffffd807283e0ec,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline] route_mpath(ffff800036dae4b0,fffffd807283e0f0,fffffd807283e0ec,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] route_mpath(ffff800036dae4b0,fffffd807283e0f0,fffffd807283e0ec,0) at route_mpath+0x170 sys/net/route.c:255 in_ouraddr(fffffd807283e000,ffff800001603800,ffff800036dae4b0,0) at in_ouraddr+0xc2 ip_input_if(ffff800036dae5a8,ffff800036dae5b4,ffff80002c36b000,0,ffff800001603800) at ip_input_if+0x422 sys/netinet/ip_input.c:508 ipv4_input(ffff800001603800,fffffd807283e000) at ipv4_input+0x50 sys/netinet/ip_input.c:337 ether_input(ffff800001603800,fffffd807283e000) at ether_input+0x6e4 end trace frame: 0xffff800036dae6d0, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd806c3c4a68, 0xe9779, 0, 1) -> e ddb{0}> trace db_read_bytes(e9779,1,ffff800036dade54) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff800036dae0f0) at db_ktrap+0x303 sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff800036dae0f0) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_clone(ffff800036dae3c8,ffff800036dae4c8,0) at rt_clone+0x98 sys/net/route.c:383 route_mpath(ffff800036dae4b0,fffffd807283e0f0,fffffd807283e0ec,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline] route_mpath(ffff800036dae4b0,fffffd807283e0f0,fffffd807283e0ec,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] route_mpath(ffff800036dae4b0,fffffd807283e0f0,fffffd807283e0ec,0) at route_mpath+0x170 sys/net/route.c:255 in_ouraddr(fffffd807283e000,ffff800001603800,ffff800036dae4b0,0) at in_ouraddr+0xc2 ip_input_if(ffff800036dae5a8,ffff800036dae5b4,ffff80002c36b000,0,ffff800001603800) at ip_input_if+0x422 sys/netinet/ip_input.c:508 ipv4_input(ffff800001603800,fffffd807283e000) at ipv4_input+0x50 sys/netinet/ip_input.c:337 ether_input(ffff800001603800,fffffd807283e000) at ether_input+0x6e4 tun_dev_write(5d00,ffff800036dae928,ffff80002c36b000,2) at tun_dev_write+0x301 sys/net/if_tun.c:914 spec_write(ffff800036dae780) at spec_write+0x120 sys/kern/spec_vnops.c:302 VOP_WRITE(fffffd806d070898,ffff800036dae928,11,fffffd807f7d3548) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806bb65d28,ffff800036dae928,0) at vn_write+0x1d1 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80002a03b708,c8,ffff800036dae928,0,ffff800036dae9e0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_write(ffff80002a03b708,ffff800036daea90,ffff800036dae9e0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff800036daea90) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800036daea90) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x515b235f4f0, count: -22 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800036dade40 rbx 0x1 rdx 0xffff800001597340 rcx 0xffff80002a03b708 rax 0xffffffff834adff0 cpu_info_full_primary+0x1ff0 r8 0xffff800036dadf70 r9 0x8080808080808080 r10 0x2cd3ea7b52f742e7 r11 0xd2375d1d037d716d r12 0x1 r13 0x1 r14 0xffff800036dade55 r15 0xe977a acpi_pdirpa+0xd55eb rip 0xffffffff8114b3e0 db_read_bytes+0x110 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800036dadde0 ss 0x10 db_read_bytes+0x110: movzbl 0xffffffffffffffff(%r15),%eax ddb{0}> show proc PROC (syz-executor) tid=7364 pid=1085 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a03af70,0xffff8000ffffccc8 process=0xffff8000ffff4db0 user=0xffff800036da9000, vmspace=0xfffffd806c3c4a68 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1085 90927 39959 0 2 0x10 syz-executor * 1085 7364 39959 0 7 0x4000010 syz-executor 59747 297875 49512 0 2 0x2 sh 72978 324197 96103 0 2 0 syz-executor 72978 363322 96103 0 3 0x4000080 fsleep syz-executor 27861 378057 51074 0 2 0 syz-executor 27861 266719 51074 0 3 0x4000080 fsleep syz-executor 27861 386484 51074 0 3 0x4000080 fsleep syz-executor 91788 288568 488 0 2 0 syz-executor 91788 347959 488 0 2 0x4000000 syz-executor 91788 134837 488 0 3 0x4000080 fsleep syz-executor 91788 129756 488 0 3 0x4000080 fsleep syz-executor 84351 204997 2288 0 4 0x82010 syz-executor 84351 276107 2288 0 3 0x4082010 smrbar syz-executor 84351 232848 2288 0 4 0x4082010 syz-executor 84351 508512 2288 0 3 0x4002010 suspend syz-executor 49512 136374 73798 0 3 0x82 wait syz-executor 23238 81928 1 0 3 0x100083 ttyin getty 88103 98996 73798 0 2 0x2 syz-executor 4246 418434 73798 0 3 0x82 wait syz-executor 2288 496874 73798 0 2 0x2 syz-executor 488 504920 73798 0 3 0x82 nanoslp syz-executor 96103 458092 73798 0 7 0x2 syz-executor 39959 80116 73798 0 2 0x482 syz-executor 51074 49537 73798 0 3 0x82 nanoslp syz-executor 76460 138675 0 0 3 0x14200 acct acct 60834 92433 0 0 3 0x14200 bored sosplice 73798 491165 50838 0 3 0x82 kqread syz-executor 50838 229899 23190 0 3 0x10008a sigsusp ksh 23190 388747 4268 0 3 0x98 kqread sshd-session 4268 218736 20197 0 3 0x92 kqread sshd-session 20197 125134 1 0 3 0x88 kqread sshd 22063 250955 53625 74 3 0x1100092 bpf pflogd 53625 355492 1 0 3 0x80 sbwait pflogd 80605 264962 32784 73 3 0x1100090 kqread syslogd 32784 206093 1 0 3 0x100082 sbwait syslogd 14128 343968 1 0 3 0x100080 kqread resolvd 51946 445152 71977 77 3 0x100092 kqread dhcpleased 39140 280185 71977 77 3 0x100092 kqread dhcpleased 71977 395105 1 0 3 0x80 kqread dhcpleased 56437 387128 0 0 2 0x40014200 smr 74972 123281 0 0 2 0x14200 zerothread 19989 165928 0 0 3 0x14200 aiodoned aiodoned 8288 125451 0 0 3 0x14200 syncer update 20159 504864 0 0 3 0x14200 cleaner cleaner 69595 331151 0 0 3 0x14200 reaper reaper 43062 161047 0 0 3 0x14200 pgdaemon pagedaemon 86263 221922 0 0 3 0x14200 bored viomb 46073 154395 0 0 3 0x40014200 acpi0 acpi0 91875 307046 0 0 3 0x40014200 idle1 73733 150427 0 0 3 0x14200 bored softnet3 95124 468264 0 0 3 0x14200 bored softnet2 31719 329989 0 0 3 0x14200 bored softnet1 97814 162185 0 0 3 0x14200 bored softnet0 8695 521281 0 0 3 0x14200 bored systqmp 19887 329225 0 0 3 0x14200 bored systq 60506 506802 0 0 3 0x14200 tmoslp softclockmp 33607 227764 0 0 2 0x40014200 softclock 62485 409122 0 0 3 0x40014200 idle0 1 516478 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 1085 (syz-executor) thread 0xffff80002a03b708 (7364) Process 84351 (syz-executor) thread 0xffff80002a03a7d8 (276107) Process 88103 (syz-executor) thread 0xffff80002a08c7c8 (98996) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10259 14547K 14581K 166960K 14196 0 pcb 18 20K 22K 166960K 585 0 rtable 143 5K 8K 166960K 4535 0 pf 36 18K 26K 166960K 390 0 ifaddr 29 6K 9K 166960K 614 0 ifgroup 55 2K 2K 166960K 663 0 sysctl 4 1K 5K 166960K 9 0 counters 62 36K 37K 166960K 378 0 ioctlops 0 0K 4K 166960K 1826 0 iov 0 0K 18K 166960K 316 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1626 102K 102K 166960K 5058 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 36K 166960K 41 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 153 0 dirhash 15 2K 3K 166960K 69 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 17 61K 97K 166960K 4268 0 sigio 0 0K 0K 166960K 74 0 proc 73 91K 140K 166960K 4445 0 subproc 104 6K 7K 166960K 1821 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 576 0 in_multi 43 3K 7K 166960K 1618 0 ether_multi 1 0K 0K 166960K 24 0 mrt 1 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 265 1182K 1182K 166960K 265 0 exec 0 0K 1K 166960K 2455 0 pfkey data 0 0K 0K 166960K 31 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 249 73K 91K 166960K 33670 0 UVM aobj 96 7K 7K 166960K 107 0 pinsyscall 42 84K 105K 166960K 8838 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 136 0 NDP 11 0K 2K 166960K 451 0 temp 76 6824K 6896K 166960K 183055 0 kqueue 13 20K 31K 166960K 406 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 676 0 672 8 7 1 3 0 8 0 rtentry 112 1639 0 1578 8 5 3 4 0 8 0 unpcb 144 2284 0 2263 30 26 4 6 0 8 3 syncache 336 17 0 17 10 10 0 1 0 8 0 tcpqe 32 7 0 7 5 5 0 1 0 8 0 tcpcb 808 1246 0 1238 46 44 2 15 0 8 0 arp 120 298 0 283 1 0 1 1 0 8 0 inpcb 336 3909 0 3896 62 58 4 13 0 8 2 nd6 136 431 0 421 1 0 1 1 0 8 0 pkpcb 40 11 0 11 6 5 1 1 0 8 1 kcovpl 48 140 0 132 1 0 1 1 0 8 0 ppxss 1168 15 0 15 8 7 1 1 0 8 1 pfstscr 40 2 0 2 2 2 0 1 0 8 0 pffrag 232 30 0 26 1 0 1 1 0 482 0 pffrnode 88 26 0 23 1 0 1 1 0 8 0 pffrent 40 218 0 214 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 309 0 259 1 0 1 1 0 8 0 pfstkey 128 313 0 263 3 0 3 3 0 8 0 pfstate 376 310 0 261 11 1 10 10 0 8 1 pfrule 1344 26 0 20 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 6627 0 6376 50 27 23 31 0 8 0 art_table 32 6629 0 6376 4 0 4 4 0 8 0 art_node 16 1627 0 1573 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 12 2 1 1 1 0 8 0 semapl 112 146 0 136 1 0 1 1 0 8 0 shmpl 112 104 0 11 3 0 3 3 0 8 0 dirhash 1024 57 0 37 3 0 3 3 0 8 0 dino2pl 256 5726 0 3940 112 0 112 112 0 8 0 ffsino 272 5726 0 3940 120 0 120 120 0 8 0 nchpl 144 9147 0 7218 72 0 72 72 0 8 0 uvmvnodes 80 7924 0 0 162 0 162 162 0 8 0 vnodes 216 7924 0 0 441 0 441 441 0 8 0 namei 1024 45308 0 45308 9 8 1 2 0 8 1 percpumem 16 203 0 158 1 0 1 1 0 8 0 kstatmem 264 338 0 316 3 1 2 3 0 8 0 scsiplug 72 3 0 3 3 2 1 1 0 8 1 scxspl 216 77361 0 77361 16 15 1 8 1 8 1 plimitpl 152 786 0 769 1 0 1 1 0 8 0 sigapl 424 4342 0 4291 10 1 9 9 0 8 1 futexpl 64 34166 0 34161 8 7 1 1 0 8 0 knotepl 120 802 0 0 19 0 19 19 0 8 0 kqueuepl 216 816 0 806 13 12 1 5 0 8 0 pipepl 320 863 0 836 10 7 3 8 0 8 0 fdescpl 496 4301 0 4270 11 6 5 6 0 8 0 filepl 152 24114 0 23848 69 53 16 20 0 8 3 lockfpl 104 952 0 949 1 0 1 1 0 8 0 lockfspl 48 361 0 358 1 0 1 1 0 8 0 sessionpl 144 171 0 162 1 0 1 1 0 8 0 pgrppl 48 349 0 332 1 0 1 1 0 8 0 ucredpl 104 3067 0 3051 1 0 1 1 0 8 0 zombiepl 144 4347 0 4346 3 2 1 1 0 8 0 processpl 1160 4342 0 4291 7 1 6 6 0 8 1 procpl 648 8176 0 8115 9 1 8 8 0 8 1 srpgc 96 20 0 20 7 7 0 1 0 8 0 sosppl 168 21 0 21 10 10 0 1 0 8 0 sockpl 664 7011 0 6974 96 87 9 24 0 8 5 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 330 0 0 28 3 25 28 0 8 0 mtagpl 96 22 0 0 1 0 1 1 0 8 0 mbufpl 256 1413 0 0 77 0 77 77 0 8 0 bufpl 280 14616 0 8141 567 47 520 567 0 8 0 anonpl 24 560538 0 556177 147 96 51 70 0 185 0 amapchunkpl 152 106445 0 105864 86 57 29 36 0 158 5 amappl16 200 8719 0 8688 117 108 9 26 0 8 4 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 412 0 400 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 7045 0 7014 4 2 2 3 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 130 0 130 1 1 0 1 0 8 0 amappl8 136 128 0 125 1 0 1 1 0 8 0 amappl7 128 386 0 373 1 0 1 1 0 8 0 amappl6 120 1477 0 1473 1 0 1 1 0 8 0 amappl5 112 677 0 664 1 0 1 1 0 8 0 amappl4 104 767 0 748 1 0 1 1 0 8 0 amappl3 96 20902 0 20782 8 4 4 4 0 8 0 amappl2 88 2683 0 2612 2 0 2 2 0 8 0 amappl1 80 31069 0 30506 18 3 15 15 0 8 0 amappl 88 32081 0 31895 6 1 5 5 0 92 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 9 0 9 3 3 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 8 0 8 3 3 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 106 0 11 2 0 2 2 0 8 0 uaddrrnd 24 4301 0 4270 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4301 0 4270 1 0 1 1 0 8 0 vmmpekpl 168 37739 0 37680 4 0 4 4 0 8 0 vmmpepl 168 268229 0 266363 171 81 90 101 0 357 5 vmsppl 440 4300 0 4270 6 2 4 5 0 8 0 rwobjpl 56 80503 0 71518 140 12 128 132 0 8 0 pdppl 4096 8609 0 8540 312 239 73 87 0 8 4 pvpl 32 30424 0 0 244 2 242 242 0 265 0 pmappl 248 4300 0 4270 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 850 0 401 14 0 14 14 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_read_bytes(e9779,1,ffff800036dade54) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff800036dae0f0) at db_ktrap+0x303 sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff800036dae0f0) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_clone(ffff800036dae3c8,ffff800036dae4c8,0) at rt_clone+0x98 sys/net/route.c:383 route_mpath(ffff800036dae4b0,fffffd807283e0f0,fffffd807283e0ec,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline] route_mpath(ffff800036dae4b0,fffffd807283e0f0,fffffd807283e0ec,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] route_mpath(ffff800036dae4b0,fffffd807283e0f0,fffffd807283e0ec,0) at route_mpath+0x170 sys/net/route.c:255 in_ouraddr(fffffd807283e000,ffff800001603800,ffff800036dae4b0,0) at in_ouraddr+0xc2 ip_input_if(ffff800036dae5a8,ffff800036dae5b4,ffff80002c36b000,0,ffff800001603800) at ip_input_if+0x422 sys/netinet/ip_input.c:508 ipv4_input(ffff800001603800,fffffd807283e000) at ipv4_input+0x50 sys/netinet/ip_input.c:337 ether_input(ffff800001603800,fffffd807283e000) at ether_input+0x6e4 tun_dev_write(5d00,ffff800036dae928,ffff80002c36b000,2) at tun_dev_write+0x301 sys/net/if_tun.c:914 spec_write(ffff800036dae780) at spec_write+0x120 sys/kern/spec_vnops.c:302 VOP_WRITE(fffffd806d070898,ffff800036dae928,11,fffffd807f7d3548) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd806bb65d28,ffff800036dae928,0) at vn_write+0x1d1 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80002a03b708,c8,ffff800036dae928,0,ffff800036dae9e0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_write(ffff80002a03b708,ffff800036daea90,ffff800036dae9e0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff800036daea90) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800036daea90) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x515b235f4f0, count: -22 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff8360d760) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8360d760) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0c5070) at syscall+0x2cc mi_syscall sys/sys/syscall_mi.h:156 [inline] syscall(ffff80002a0c5070) at syscall+0x2cc sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x711609006ab0, count: 9 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff8360d760) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8360d760) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a0c5070) at syscall+0x2cc mi_syscall sys/sys/syscall_mi.h:156 [inline] syscall(ffff80002a0c5070) at syscall+0x2cc sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x711609006ab0, count: -6