uvm_fault(0xfffffd806bb0c200, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 224377 53935 0 0 0x4000001 1 syz-executor dt_ioctl_record_stop(ffff800001464000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff8000ffff27d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff27d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002effad40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f587000,81,fffffd80097fb270,ffff8000ffff27d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806afad300,ffff8000ffff27d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806afad300,ffff8000ffff27d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806afad300,ffff8000ffff27d8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806afad300,ffff8000ffff27d8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffff27d8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff27d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff27d8,ffff80002effb0b0,ffff80002effb000) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002effb0b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002effb0b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c36541c6db0, count: 3 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(0xfffffd806bb0c200, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001464000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff8000ffff27d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff27d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002effad40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f587000,81,fffffd80097fb270,ffff8000ffff27d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806afad300,ffff8000ffff27d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806afad300,ffff8000ffff27d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806afad300,ffff8000ffff27d8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806afad300,ffff8000ffff27d8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffff27d8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff27d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff27d8,ffff80002effb0b0,ffff80002effb000) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002effb0b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002effb0b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c36541c6db0, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002effac70 rbx 0x1 rdx 0 rcx 0xffff8000ffff27d8 rax 0xffffffff837b9b28 dt_prov_syscall r8 0xffffffffffffffff r9 0 r10 0xd9829b75ba9857ef r11 0x9de9298d14c18bf2 r12 0 r13 0 r14 0 r15 0xffff800001503400 rip 0xffffffff81acc2e8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002effac40 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=267074 pid=91645 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff27d8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffff3768,0xffff800034008030 process=0xffff80002a3d6b78 user=0xffff80002eff6000, vmspace=0xfffffd806bb0c200 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 85787 301697 14844 0 2 0 syz-executor 85787 368768 14844 0 2 0x4000000 syz-executor 85787 453585 14844 0 2 0x4000000 syz-executor 85787 344941 14844 0 2 0x4000000 syz-executor 65667 232075 57675 0 2 0 syz-executor 65667 156957 57675 0 3 0x4000080 kqsel syz-executor 53935 320815 37579 0 2 0 syz-executor 53935 224377 37579 0 7 0x4000001 syz-executor 44759 53875 77076 60929 3 0x90 nanoslp syz-executor 44759 190256 77076 60929 3 0x4000090 nanoslp syz-executor 44759 478523 77076 60929 3 0x4000090 fsleep syz-executor 20415 515415 38352 0 2 0x1 syz-executor 20415 55445 38352 0 3 0x4000080 ttyin syz-executor 20415 183621 38352 0 3 0x4000080 fsleep syz-executor 37579 82004 72230 0 2 0x3 syz-executor 58382 477458 1 0 3 0x100083 ttyin getty 79295 324893 0 0 3 0x14200 acct acct 68989 405529 0 0 3 0x14280 nfsidl nfsio 9931 386417 0 0 3 0x14280 nfsidl nfsio 99690 398651 0 0 3 0x14280 nfsidl nfsio 34010 179520 0 0 3 0x14280 nfsidl nfsio 59140 483531 0 0 3 0x14280 nfsidl nfsio 58267 119547 0 0 3 0x14280 nfsidl nfsio 24126 293025 0 0 3 0x14280 nfsidl nfsio 66795 128434 0 0 3 0x14280 nfsidl nfsio 82839 4693 0 0 3 0x14280 nfsidl nfsio 6842 70399 0 0 3 0x14280 nfsidl nfsio 19697 158458 0 0 3 0x14280 nfsidl nfsio 80115 216573 0 0 3 0x14280 nfsidl nfsio 88351 312910 0 0 3 0x14280 nfsidl nfsio 12413 511284 0 0 3 0x14280 nfsidl nfsio 12145 228963 0 0 3 0x14280 nfsidl nfsio 53073 161850 0 0 3 0x14280 nfsidl nfsio 60961 91283 0 0 3 0x14280 nfsidl nfsio 98967 349937 0 0 3 0x14280 nfsidl nfsio 12448 522036 0 0 3 0x14280 nfsidl nfsio 65799 333691 0 0 3 0x14280 nfsidl nfsio 76296 151680 72230 0 3 0x82 wait syz-executor 845 481408 0 0 3 0x14200 bored sosplice 38352 250595 72230 0 3 0x82 nanoslp syz-executor 43605 494235 72230 0 2 0xc82 syz-executor 27144 38923 72230 0 3 0x82 nanoslp syz-executor 14844 268861 72230 0 3 0x82 nanoslp syz-executor 57675 426270 72230 0 2 0xc82 syz-executor 77076 351055 72230 0 2 0xc82 syz-executor 72230 252132 54784 0 3 0x82 kqread syz-executor 54784 109127 29478 0 3 0x10008a sigsusp ksh 29478 290104 63856 0 3 0x98 kqread sshd-session 63856 403954 9058 0 3 0x92 kqread sshd-session 9058 429609 1 0 3 0x88 kqread sshd 240 167660 18279 74 3 0x1100092 bpf pflogd 18279 264516 1 0 3 0x80 sbwait pflogd 85136 498458 51870 73 3 0x1100090 kqread syslogd 51870 273044 1 0 3 0x100082 sbwait syslogd 33655 311365 1 0 3 0x100080 kqread resolvd 13703 228784 66504 77 3 0x100092 kqread dhcpleased 70182 282544 66504 77 3 0x100092 kqread dhcpleased 66504 4922 1 0 3 0x80 kqread dhcpleased 14778 241239 0 0 3 0x14200 bored smr 60702 494506 0 0 2 0x14200 zerothread 62127 310106 0 0 3 0x14200 aiodoned aiodoned 23052 39978 0 0 3 0x14200 syncer update 6625 169250 0 0 3 0x14200 cleaner cleaner 9318 325576 0 0 3 0x14200 reaper reaper 5256 380945 0 0 3 0x14200 pgdaemon pagedaemon 85727 66696 0 0 3 0x14200 bored viomb 84312 188748 0 0 3 0x40014200 acpi0 acpi0 58990 286453 0 0 3 0x40014200 idle1 60347 172224 0 0 3 0x14200 bored softnet7 44077 8194 0 0 3 0x14200 bored softnet6 44336 264235 0 0 3 0x14200 bored softnet5 95565 251517 0 0 3 0x14200 bored softnet4 71693 511636 0 0 3 0x14200 bored softnet3 19244 480172 0 0 3 0x14200 bored softnet2 35378 35580 0 0 3 0x14200 bored softnet1 78718 495819 0 0 3 0x14200 bored softnet0 5013 335775 0 0 3 0x14200 bored systqmp 10957 387173 0 0 3 0x14200 bored systq 30011 382102 0 0 3 0x14200 tmoslp softclockmp 28703 442682 0 0 3 0x40014200 tmoslp softclock 87377 366224 0 0 3 0x40014200 idle0 1 249051 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10235 11188K 11252K 166960K 12044 0 pcb 19 15K 16K 166960K 207 0 rtable 209 10K 10K 166960K 431 0 pf 42 19K 131090K 166960K 210 0 ifaddr 43 7K 8K 166960K 115 0 ifgroup 60 2K 2K 166960K 183 0 sysctl 4 1K 9K 166960K 13 0 counters 72 37K 38K 166960K 208 0 ioctlops 0 0K 4K 166960K 1677 0 iov 0 0K 28K 166960K 118 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1370 86K 86K 166960K 2086 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 9K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 80 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 1040 0 sigio 0 0K 0K 166960K 150 0 proc 72 115K 196K 166960K 670 0 subproc 72 4K 4K 166960K 92 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 126 0 in_multi 89 6K 7K 166960K 168 0 ether_multi 1 0K 0K 166960K 12 0 mrt 2 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 525 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 247 171K 190K 166960K 11195 0 UVM aobj 91 3K 3K 166960K 91 0 pinsyscall 43 86K 103K 166960K 2179 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 73 0 NDP 15 0K 1K 166960K 77 0 temp 69 8649K 8896K 166960K 54568 0 kqueue 14 22K 31K 166960K 212 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 98 0 94 1 0 1 1 0 8 0 rtentry 176 145 0 64 5 0 5 5 0 8 0 unpcb 144 611 0 590 3 1 2 2 0 8 1 syncache 336 6 0 6 2 2 0 1 0 8 0 tcpcb 736 255 0 251 4 2 2 2 0 8 1 arp 128 17 0 5 1 0 1 1 0 8 0 inpcb 328 951 0 939 12 5 7 7 0 8 5 nd6 144 22 0 6 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 0 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 55 0 54 2 1 1 1 0 8 0 pppxif 1504 8 0 7 3 2 1 1 0 8 0 pfstscr 40 6 0 5 1 0 1 1 0 8 0 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 1 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 89 0 23 1 0 1 1 0 8 0 pfstkey 128 98 0 33 3 0 3 3 0 8 0 pfstate 384 89 0 27 7 0 7 7 0 8 0 pfrule 1344 28 0 22 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 710 0 338 28 2 26 28 0 8 0 art_table 40 713 0 338 5 0 5 5 0 8 0 art_node 32 143 0 75 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 12 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 77 0 67 1 0 1 1 0 8 0 shmpl 112 88 0 0 3 0 3 3 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3352 0 1836 96 0 96 96 0 8 0 ffsino 296 3352 0 1836 118 0 118 118 0 8 0 nchpl 144 4851 0 3147 64 0 64 64 0 8 0 rtmask 32 10 0 10 3 2 1 1 0 8 1 uvmvnodes 80 3763 0 0 77 0 77 77 0 8 0 vnodes 216 3763 0 0 210 0 210 210 0 8 0 namei 1024 16142 0 16142 2 1 1 2 0 8 1 percpumem 16 119 0 68 1 0 1 1 0 8 0 kstatmem 264 118 0 88 4 1 3 3 0 8 0 scsiplug 72 5 0 5 4 3 1 1 0 8 1 scxspl 216 38136 0 38136 13 9 4 8 1 8 4 plimitpl 152 213 0 195 1 0 1 1 0 8 0 sigapl 424 1364 0 1288 9 0 9 9 0 8 0 knotepl 120 561 0 0 17 0 17 17 0 8 0 kqueuepl 224 433 0 422 5 2 3 3 0 8 2 pipepl 344 284 0 257 6 3 3 6 0 8 0 fdescpl 528 1318 0 1286 3 0 3 3 0 8 0 filepl 160 8084 0 7845 19 5 14 16 0 8 2 lockfpl 104 366 0 362 1 0 1 1 0 8 0 lockfspl 48 140 0 136 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 50 0 33 1 0 1 1 0 8 0 ucredpl 104 1222 0 1206 1 0 1 1 0 8 0 zombiepl 144 1291 0 1288 1 0 1 1 0 8 0 processpl 1232 1364 0 1288 6 0 6 6 0 8 0 procpl 664 2951 0 2866 9 0 9 9 0 8 1 sosppl 168 13 0 13 3 2 1 1 0 8 1 sockpl 752 1707 0 1670 15 4 11 11 0 8 7 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 33 0 0 5 1 4 5 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 225 0 0 14 0 14 14 0 8 0 bufpl 280 16558 0 10415 440 0 440 440 0 8 1 anonpl 32 10404 0 0 84 0 84 84 0 246 0 amapchunkpl 152 39025 0 38514 37 6 31 31 0 158 10 amappl16 200 6418 0 6386 33 17 16 21 0 8 7 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 124 0 112 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1992 0 1960 4 1 3 3 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 116 0 103 1 0 1 1 0 8 0 amappl6 120 199 0 195 1 0 1 1 0 8 0 amappl5 112 133 0 122 1 0 1 1 0 8 0 amappl4 104 312 0 293 1 0 1 1 0 8 0 amappl3 96 6603 0 6502 4 1 3 3 0 8 0 amappl2 88 1563 0 1481 2 0 2 2 0 8 0 amappl1 80 12360 0 11756 16 2 14 15 0 8 0 amappl 88 10298 0 10126 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 2 1 1 1 0 8 1 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 90 0 0 2 0 2 2 0 8 0 uaddrrnd 24 1318 0 1286 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1318 0 1286 1 0 1 1 0 8 0 vmmpekpl 168 11981 0 11930 3 0 3 3 0 8 0 vmmpepl 168 90248 0 88201 107 4 103 105 0 357 3 vmsppl 488 1317 0 1286 6 1 5 5 0 8 0 rwobjpl 80 30881 0 26087 103 0 103 103 0 8 2 pdppl 4096 2644 0 2572 106 32 74 86 0 8 2 pvpl 32 19766 0 0 160 0 160 160 0 265 0 pmappl 256 1317 0 1286 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 291 0 45 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001464000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff8000ffff27d8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff27d8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002effad40) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f587000,81,fffffd80097fb270,ffff8000ffff27d8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806afad300,ffff8000ffff27d8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806afad300,ffff8000ffff27d8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806afad300,ffff8000ffff27d8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806afad300,ffff8000ffff27d8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000ffff27d8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff27d8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff27d8,ffff80002effb0b0,ffff80002effb000) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002effb0b0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002effb0b0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c36541c6db0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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(ffffffff838727a8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838727a8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 ktrstruct(ffff800034008020,ffffffff8339beb0,ffff80003c4632d0,100) at ktrstruct+0xdf sys/kern/kern_ktrace.c:313 sys_kevent(ffff800034008020,ffff80003c463650,ffff80003c4635a0) at sys_kevent+0x34a sys/kern/kern_event.c:1280 syscall(ffff80003c463650) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c463650) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x44da1dfce70, count: 7 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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(ffffffff838727a8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838727a8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 ktrstruct(ffff800034008020,ffffffff8339beb0,ffff80003c4632d0,100) at ktrstruct+0xdf sys/kern/kern_ktrace.c:313 sys_kevent(ffff800034008020,ffff80003c463650,ffff80003c4635a0) at sys_kevent+0x34a sys/kern/kern_event.c:1280 syscall(ffff80003c463650) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c463650) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x44da1dfce70, count: -8