login: uvm_fault(0xfffffd806bc50d40, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82de4620 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002efe6980 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82de4620 Starting stack trace... panic(ffffffff8332cce0) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002efe68d0) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000014a5000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 dtclose(11e5f,81,2000,ffff80002a2827d0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2827d0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002efe6a80) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807437ea68,81,fffffd807f7d3208,ffff80002a2827d0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8077de7128,ffff80002a2827d0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8077de7128,ffff80002a2827d0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8077de7128,ffff80002a2827d0) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd8077de7128,ffff80002a2827d0) at closef+0x192 sys/kern/kern_descrip.c:1249 fdfree(ffff80002a2827d0) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff80002a2827d0,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80002a2827d0,ffff80002efe6df0,ffff80002efe6d40) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002efe6df0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002efe6df0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f706d19b970, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 TID PID UID PRFLAGS PFLAGS CPU COMMAND 232593 69642 0 0 0 0 syz-executor *495290 12302 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7bbeaa1bfd20, count: 14 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{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806bc50d40, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7bbeaa1bfd20, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4a63a0 rbx 0 rdx 0 rcx 0xffff80002a282540 rax 0x2a r8 0xffff80003c4a62d0 r9 0x1 r10 0x29e2f7624bdca615 r11 0xb96964c174dae4d2 r12 0 r13 0xffffffff8129dee8 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff82fb44c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4a6320 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=495290 pid=12302 tcnt=4 stat=onproc flags process=0 proc=0 runpri=84, usrpri=84, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2827d0,0xffff8000fffe4d20 process=0xffff8000fffe20c0 user=0xffff80003c4a1000, vmspace=0xfffffd806bc50200 estcpu=34, cpticks=1, pctcpu=0.6, user=5, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53355 4961 48849 0 2 0 syz-executor 69642 232593 88134 0 7 0 syz-executor 69642 456409 88134 0 3 0x4000080 fsleep syz-executor *12302 495290 52873 0 7 0 syz-executor 12302 114394 52873 0 3 0x4000080 sbwait syz-executor 12302 176471 52873 0 3 0x4000000 inode syz-executor 12302 274288 52873 0 3 0x4000000 inode syz-executor 27425 241166 43769 0 3 0x80 nanoslp syz-executor 27425 237182 43769 0 3 0x4000000 smrbar syz-executor 27425 136742 43769 0 3 0x4000080 fsleep syz-executor 24239 158478 59244 0 3 0x80 nanoslp syz-executor 24239 332294 59244 0 3 0x4000080 piperd syz-executor 24239 356019 59244 0 3 0x4000080 fsleep syz-executor 84015 112842 85973 0 3 0x80 nanoslp syz-executor 84015 145219 85973 0 3 0x4000080 ttyin syz-executor 84015 224087 85973 0 3 0x4000080 sbwait syz-executor 84015 459118 85973 0 3 0x4000080 fsleep syz-executor 88134 121017 20519 0 3 0x82 nanoslp syz-executor 55214 341601 1 0 3 0x100083 ttyin getty 48849 423495 20519 0 3 0x82 nanoslp syz-executor 43769 122212 20519 0 3 0x82 nanoslp syz-executor 52873 50660 20519 0 3 0x82 nanoslp syz-executor 76405 470268 20519 0 3 0x82 nanoslp syz-executor 59244 260636 20519 0 3 0x82 nanoslp syz-executor 13304 83785 0 0 3 0x14280 nfsidl nfsio 50257 232237 0 0 3 0x14280 nfsidl nfsio 93145 242278 0 0 3 0x14280 nfsidl nfsio 83691 333690 0 0 3 0x14280 nfsidl nfsio 49579 215599 0 0 3 0x14280 nfsidl nfsio 24547 204385 0 0 3 0x14280 nfsidl nfsio 24151 377972 0 0 3 0x14280 nfsidl nfsio 12919 456091 0 0 3 0x14280 nfsidl nfsio 2761 482688 0 0 3 0x14280 nfsidl nfsio 26346 272946 0 0 3 0x14280 nfsidl nfsio 88450 152700 0 0 3 0x14280 nfsidl nfsio 64531 39935 0 0 3 0x14280 nfsidl nfsio 48361 269285 0 0 3 0x14280 nfsidl nfsio 64642 453333 0 0 3 0x14280 nfsidl nfsio 7201 309908 0 0 3 0x14280 nfsidl nfsio 96589 254953 0 0 3 0x14280 nfsidl nfsio 52843 279354 0 0 3 0x14280 nfsidl nfsio 86827 189011 0 0 3 0x14280 nfsidl nfsio 95915 92372 0 0 3 0x14280 nfsidl nfsio 73705 251208 0 0 3 0x14280 nfsidl nfsio 63970 437206 0 0 3 0x14200 bored sosplice 62394 294966 20519 0 3 0x82 wait syz-executor 85973 137193 20519 0 3 0x82 nanoslp syz-executor 20519 1504 76747 0 3 0x82 kqread syz-executor 76747 102873 33452 0 3 0x10008a sigsusp ksh 33452 263330 46538 0 3 0x98 kqread sshd-session 46538 420519 9717 0 3 0x92 kqread sshd-session 9717 123895 1 0 3 0x88 kqread sshd 20320 253027 92220 74 3 0x1100092 bpf pflogd 92220 503071 1 0 3 0x80 sbwait pflogd 84316 235685 51188 73 3 0x1100090 kqread syslogd 51188 132676 1 0 3 0x100082 sbwait syslogd 62554 263377 1 0 3 0x100080 kqread resolvd 21589 333658 7828 77 3 0x100092 kqread dhcpleased 23621 403752 7828 77 3 0x100092 kqread dhcpleased 7828 31413 1 0 3 0x80 kqread dhcpleased 31297 223246 0 0 3 0x14200 bored smr 37686 400215 0 0 2 0x14200 zerothread 99294 406470 0 0 3 0x14200 aiodoned aiodoned 85185 65165 0 0 3 0x14200 syncer update 16972 94952 0 0 3 0x14200 cleaner cleaner 23891 376687 0 0 3 0x14200 reaper reaper 51320 12417 0 0 3 0x14200 pgdaemon pagedaemon 56535 254754 0 0 3 0x14200 bored viomb 19533 261731 0 0 3 0x40014200 acpi0 acpi0 10975 463584 0 0 3 0x40014200 idle1 73318 124075 0 0 3 0x14200 bored softnet3 53136 237918 0 0 3 0x14200 bored softnet2 25591 110062 0 0 3 0x14200 bored softnet1 33211 492330 0 0 3 0x14200 netlock softnet0 97055 6587 0 0 2 0x40014200 systqmp 14606 459312 0 0 3 0x14200 bored systq 36480 36809 0 0 3 0x14200 tmoslp softclockmp 27236 265731 0 0 3 0x40014200 tmoslp softclock 20544 164313 0 0 3 0x40014200 idle0 1 210954 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 69642 (syz-executor) thread 0xffff8000ffff02b8 (232593) Process 12302 (syz-executor) thread 0xffff8000fffe4d10 (114394) Process 12302 (syz-executor) thread 0xffff8000fffe47f0 (176471) Process 27425 (syz-executor) thread 0xffff80002a2839c0 (237182) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 11075K 11601K 166960K 13024 0 pcb 18 16K 18K 166960K 375 0 rtable 212 9K 10K 166960K 849 0 pf 43 19K 23K 166960K 303 0 ifaddr 38 6K 8K 166960K 142 0 ifgroup 56 2K 2K 166960K 224 0 sysctl 4 1K 1K 166960K 4 0 counters 64 36K 37K 166960K 206 0 ioctlops 0 0K 4K 166960K 1760 0 iov 0 0K 20K 166960K 77 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1467 92K 93K 166960K 2959 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 26 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 123 0 dirhash 15 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 110K 166960K 1801 0 sigio 0 0K 0K 166960K 100 0 proc 73 91K 140K 166960K 1044 0 subproc 72 4K 4K 166960K 171 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 222 0 in_multi 84 6K 7K 166960K 281 0 ether_multi 1 0K 0K 166960K 8 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 730 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 260 169K 178K 166960K 17252 0 UVM aobj 46 4K 4K 166960K 46 0 pinsyscall 43 86K 104K 166960K 3234 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 124 0 NDP 12 0K 2K 166960K 101 0 temp 79 8692K 8760K 166960K 57273 0 kqueue 13 20K 30K 166960K 277 0 SYN cache 2 10K 18K 166960K 3 0 ddb{1}> 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 120 190 0 187 2 1 1 2 0 8 0 rtentry 176 272 0 181 6 0 6 6 0 8 0 unpcb 144 1156 0 1135 10 8 2 6 0 8 0 syncache 336 7 0 7 3 2 1 1 0 8 1 tcpqe 32 3 0 3 1 0 1 1 0 8 1 tcpcb 808 580 0 571 20 15 5 7 0 8 4 arp 128 44 0 29 1 0 1 1 0 8 0 inpcb 384 2060 0 2044 17 11 6 9 0 8 4 nd6 144 67 0 42 3 1 2 2 0 8 0 pkpcb 40 16 0 16 2 2 0 1 0 8 0 kcovpl 48 19 0 11 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 1 0 1 0 8 0 ppxss 1192 43 0 43 1 0 1 1 0 8 1 pppxif 1504 9 0 9 3 2 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 10 0 2 1 0 1 1 0 482 0 pffrnode 88 9 0 2 1 0 1 1 0 8 0 pffrent 40 18 0 10 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 0 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 10 0 8 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 88 0 44 1 0 1 1 0 8 0 pfstkey 128 94 0 50 2 0 2 2 0 8 0 pfstate 384 92 0 48 5 0 5 5 0 8 0 pfrule 1344 45 0 35 2 0 2 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1121 0 722 34 6 28 29 0 8 0 art_table 32 1124 0 722 4 0 4 4 0 8 0 art_node 16 269 0 189 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 3 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 119 0 109 1 0 1 1 0 8 0 shmpl 112 43 0 0 2 0 2 2 0 8 0 dirhash 1024 33 0 14 3 0 3 3 0 8 0 dino2pl 256 4484 0 2946 97 0 97 97 0 8 0 ffsino 288 4484 0 2946 111 0 111 111 0 8 0 nchpl 144 6834 0 6249 63 38 25 63 0 8 0 rtmask 32 3 0 3 3 3 0 1 0 8 0 uvmvnodes 80 2533 0 0 52 0 52 52 0 8 0 vnodes 216 2533 0 0 141 0 141 141 0 8 0 namei 1024 24488 0 24486 2 1 1 2 0 8 0 percpumem 16 118 0 71 1 0 1 1 0 8 0 kstatmem 264 122 0 98 2 0 2 2 0 8 0 scsiplug 72 12 0 12 5 4 1 1 0 8 1 scxspl 216 20320 0 20320 14 12 2 8 1 8 2 plimitpl 152 415 0 397 1 0 1 1 0 8 0 sigapl 424 2134 0 2063 12 2 10 11 0 8 0 futexpl 64 23014 0 23010 1 0 1 1 0 8 0 knotepl 120 715 0 0 22 0 22 22 0 8 0 kqueuepl 224 529 0 519 6 3 3 3 0 8 2 pipepl 336 379 0 351 12 6 6 8 0 8 2 fdescpl 520 2072 0 2040 3 0 3 3 0 8 0 filepl 160 13402 0 13163 23 7 16 18 0 8 3 lockfpl 104 737 0 734 2 1 1 2 0 8 0 lockfspl 48 229 0 226 1 0 1 1 0 8 0 sessionpl 144 41 0 32 1 0 1 1 0 8 0 pgrppl 48 72 0 55 1 0 1 1 0 8 0 ucredpl 104 2054 0 2040 1 0 1 1 0 8 0 zombiepl 144 2065 0 2063 1 0 1 1 0 8 0 processpl 1192 2134 0 2063 8 1 7 8 0 8 0 procpl 656 4728 0 4646 10 2 8 9 0 8 0 srpgc 96 20 0 20 3 2 1 1 0 8 1 sosppl 168 14 0 14 2 1 1 1 0 8 1 sockpl 728 3510 0 3470 22 14 8 15 0 8 4 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 93 0 0 3 0 3 3 0 8 0 mbufpl 256 343 0 0 21 0 21 21 0 8 0 bufpl 280 6200 0 134 434 0 434 434 0 8 0 anonpl 32 11708 0 0 95 0 95 95 0 246 0 amapchunkpl 152 56339 0 55596 35 4 31 31 0 158 2 amappl16 200 4463 0 4371 42 33 9 27 0 8 0 amappl15 192 34 0 34 1 1 0 1 0 8 0 amappl14 184 150 0 138 1 0 1 1 0 8 0 amappl13 176 28 0 26 1 0 1 1 0 8 0 amappl12 168 2913 0 2882 4 2 2 3 0 8 0 amappl11 160 59 0 45 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 143 0 131 1 0 1 1 0 8 0 amappl6 120 293 0 289 1 0 1 1 0 8 0 amappl5 112 173 0 163 1 0 1 1 0 8 0 amappl4 104 379 0 357 1 0 1 1 0 8 0 amappl3 96 11887 0 11770 5 1 4 4 0 8 0 amappl2 88 836 0 775 2 0 2 2 0 8 0 amappl1 80 17140 0 16523 17 2 15 15 0 8 0 amappl 88 16046 0 15860 5 0 5 5 0 92 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 7 0 7 2 2 0 1 0 8 0 dma128 128 261 0 261 4 3 1 1 0 8 1 dma64 64 7 0 7 2 2 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 45 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2072 0 2040 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2072 0 2040 1 0 1 1 0 8 0 vmmpekpl 168 18364 0 18295 4 0 4 4 0 8 0 vmmpepl 168 132456 0 130314 118 18 100 110 0 357 2 vmsppl 480 2071 0 2040 5 0 5 5 0 8 0 rwobjpl 72 36511 0 32899 73 6 67 71 0 8 0 pdppl 4096 4151 0 4080 125 54 71 85 0 8 0 pvpl 32 19024 0 0 155 1 154 154 0 265 0 pmappl 256 2071 0 2040 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 461 0 88 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83892ff0) 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(ffffffff83a009a0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(2) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 uvm_fault(fffffd806bc50b60,3a2312e6000,0,1) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:689 upageflttrap(ffff80003c48e740,3a2312e6000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c48e740) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7131aca5ea30, count: 1 ddb{0}> trace x86_ipi_db(ffffffff83892ff0) 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(ffffffff83a009a0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(2) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a009a0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 uvm_fault(fffffd806bc50b60,3a2312e6000,0,1) at uvm_fault+0x1ee sys/uvm/uvm_fault.c:689 upageflttrap(ffff80003c48e740,3a2312e6000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c48e740) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7131aca5ea30, count: -14 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7bbeaa1bfd20, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7bbeaa1bfd20, count: -1