login: uvm_fault(0xfffffd806b9983e8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82058078 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a3a77a0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82058078 Starting stack trace... panic(ffffffff833a55f3) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a3a76f0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000147b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff800031009ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800031009ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3a78a0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806637cc08,81,fffffd80097fb750,ffff800031009ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a1395e0,ffff800031009ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806a1395e0,ffff800031009ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806a1395e0,ffff800031009ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806a1395e0,ffff800031009ca8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800031009ca8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800031009ca8,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800031009ca8,ffff80002a3a7c10,ffff80002a3a7b60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3a7c10) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3a7c10) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7925668630, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 252468 40414 0 0 0 0 syz-executor *306648 20817 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x778a51be6ac0, 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(0xfffffd806b9983e8, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x778a51be6ac0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a3a1ab0 rbx 0 rdx 0 rcx 0xffff80003c459a18 rax 0x2a r8 0xffff80002a3a19e0 r9 0x1 r10 0x7ec2adf4e638b0f3 r11 0x2ae7ce0c7942d752 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff829444c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a3a1a30 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=306648 pid=20817 tcnt=4 stat=onproc flags process=0 proc=0 runpri=84, usrpri=85, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c459250,0xffff80003c458a98 process=0xffff800036c26240 user=0xffff80002a39c000, vmspace=0xfffffd806b998200 estcpu=35, cpticks=8, pctcpu=0.4, user=6, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61168 94199 76814 0 2 0 syz-executor 40414 252468 43946 0 7 0 syz-executor 40414 490228 43946 0 2 0x4000000 syz-executor 43901 409790 50582 0 2 0 syz-executor 43901 490072 50582 0 3 0x4000080 netacc syz-executor 43901 111687 50582 0 3 0x4000080 fsleep syz-executor 43901 39091 50582 0 3 0x4000080 fsleep syz-executor *20817 306648 14705 0 7 0 syz-executor 20817 350092 14705 0 3 0x4000080 fsleep syz-executor 20817 53182 14705 0 3 0x4000080 fsleep syz-executor 20817 319525 14705 0 3 0x4000080 fsleep syz-executor 92870 435968 59657 0 3 0x80 nanoslp syz-executor 92870 439901 59657 0 3 0x4000080 lockf syz-executor 92870 251775 59657 0 3 0x4000080 fsleep syz-executor 92870 292523 59657 0 3 0x4000080 fsleep syz-executor 6952 518715 8117 0 3 0x82 nanoslp syz-executor 50582 372253 8117 0 3 0x82 nanoslp syz-executor 43946 286413 8117 0 3 0x82 nanoslp syz-executor 89417 327879 0 0 3 0x14200 acct acct 14705 495791 8117 0 3 0x82 nanoslp syz-executor 59657 38193 8117 0 3 0x82 nanoslp syz-executor 74670 45776 1 0 3 0x100083 ttyin getty 97187 292078 76780 0 3 0x82 sbwait sshd-session 38490 296789 0 0 3 0x14200 bored sosplice 92189 103786 8117 0 3 0x82 nanoslp syz-executor 73037 413049 8117 0 2 0x2 syz-executor 76814 21369 8117 0 3 0x82 nanoslp syz-executor 8117 22529 82012 0 3 0x82 kqread syz-executor 82012 498918 7170 0 3 0x10008a sigsusp ksh 7170 4161 48953 0 3 0x98 kqread sshd-session 48953 411505 76780 0 3 0x92 kqread sshd-session 76780 291442 1 0 3 0x88 kqread sshd 61203 23750 44363 74 3 0x1100092 bpf pflogd 44363 78120 1 0 3 0x80 sbwait pflogd 19479 212383 13904 73 3 0x1100090 kqread syslogd 13904 156657 1 0 3 0x100082 sbwait syslogd 7931 291260 1 0 3 0x100080 kqread resolvd 60485 413449 33438 77 3 0x100092 kqread dhcpleased 38134 69806 33438 77 3 0x100092 kqread dhcpleased 33438 319890 1 0 3 0x80 kqread dhcpleased 33310 53413 0 0 3 0x14200 bored smr 27660 135736 0 0 2 0x14200 zerothread 91669 290952 0 0 3 0x14200 aiodoned aiodoned 15196 349627 0 0 3 0x14200 syncer update 14579 185186 0 0 3 0x14200 cleaner cleaner 55764 159646 0 0 3 0x14200 reaper reaper 377 109238 0 0 3 0x14200 pgdaemon pagedaemon 8943 349962 0 0 3 0x14200 bored viomb 51743 128290 0 0 3 0x40014200 acpi0 acpi0 87006 16591 0 0 3 0x40014200 idle1 41775 238247 0 0 3 0x14200 bored softnet7 84526 8364 0 0 3 0x14200 bored softnet6 46515 80938 0 0 3 0x14200 bored softnet5 61429 60211 0 0 3 0x14200 bored softnet4 51590 60936 0 0 3 0x14200 bored softnet3 25526 377314 0 0 3 0x14200 bored softnet2 77809 462138 0 0 3 0x14200 bored softnet1 47199 243472 0 0 3 0x14200 netlock softnet0 92352 35251 0 0 2 0x40014200 systqmp 61080 311625 0 0 3 0x14200 bored systq 14774 120708 0 0 3 0x14200 tmoslp softclockmp 93424 514962 0 0 3 0x40014200 tmoslp softclock 60596 75529 0 0 3 0x40014200 idle0 1 211216 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 61168 (syz-executor) thread 0xffff800031009778 (94199) exclusive rwlock vmmaplk r = 0 (0xfffffd800b0272e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x895 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x895 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #8 recall_trap+0x8 Process 40414 (syz-executor) thread 0xffff80003c4582c0 (490228) exclusive rwlock vmmaplk r = 0 (0xfffffd806b998118) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x895 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x895 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #8 recall_trap+0x8 Process 73037 (syz-executor) thread 0xffff80002a2b87e0 (413049) exclusive rrwlock inode r = 0 (0xfffffd807897aa28) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ufs_lookup+0x16bd sys/ufs/ufs/ufs_lookup.c:573 #7 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #8 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #9 namei+0x7ca sys/kern/vfs_lookup.c:250 #10 dofstatat+0xf2 sys/kern/vfs_syscalls.c:2086 #11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #12 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10229 11071K 11479K 166960K 14363 0 pcb 17 18K 20K 166960K 710 0 rtable 206 12K 13K 166960K 1071 0 pf 36 18K 67485K 166960K 466 0 ifaddr 38 7K 8K 166960K 171 0 ifgroup 55 2K 2K 166960K 324 0 sysctl 4 1K 9K 166960K 36 0 counters 68 36K 37K 166960K 476 0 ioctlops 0 0K 4K 166960K 2055 0 iov 0 0K 28K 166960K 179 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1475 93K 93K 166960K 4100 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 99 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 2459 0 sigio 0 0K 0K 166960K 46 0 proc 75 131K 180K 166960K 948 0 subproc 72 4K 4K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 489 0 in_multi 79 5K 7K 166960K 233 0 ether_multi 1 0K 0K 166960K 17 0 mrt 0 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 922 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 153K 174K 166960K 24773 0 UVM aobj 57 8K 8K 166960K 72 0 pinsyscall 44 88K 102K 166960K 3723 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 144 0 NDP 12 0K 1K 166960K 129 0 temp 81 8652K 8908K 166960K 112293 0 kqueue 13 20K 30K 166960K 481 0 SYN cache 2 16K 16K 166960K 2 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 120 246 0 243 3 2 1 3 0 8 0 rtentry 176 381 0 306 5 0 5 5 0 8 0 unpcb 144 2270 0 2251 22 15 7 7 0 8 6 syncache 336 14 0 14 6 5 1 1 0 8 1 tcpqe 32 4 0 4 3 2 1 1 0 8 1 tcpcb 736 1029 0 1018 17 15 2 8 0 8 0 arp 128 82 0 74 1 0 1 1 0 8 0 inpcb 328 3269 0 3254 36 28 8 13 0 8 6 nd6 144 40 0 23 1 0 1 1 0 8 0 pkpcb 40 23 0 23 3 2 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 ppxss 1192 173 0 173 2 1 1 1 0 8 1 pppxif 1504 12 0 12 4 3 1 1 0 8 1 pfstscr 40 43 0 42 1 0 1 1 0 8 0 pffrag 232 18 0 4 1 0 1 1 0 482 0 pffrnode 88 16 0 4 1 0 1 1 0 8 0 pffrent 40 27 0 13 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 2 0 1 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 84 0 49 1 0 1 1 0 8 0 pfstkey 128 123 0 82 3 0 3 3 0 8 0 pfstate 384 100 0 66 8 0 8 8 0 8 1 pfrule 1344 94 0 88 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 967 0 594 36 10 26 32 0 8 1 art_table 40 970 0 594 6 0 6 6 0 8 0 art_node 32 379 0 314 3 1 2 3 0 8 1 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 97 0 87 1 0 1 1 0 8 0 shmpl 112 69 0 15 2 0 2 2 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 6301 0 4777 97 1 96 96 0 8 0 ffsino 296 6301 0 4777 118 0 118 118 0 8 0 nchpl 144 9573 0 7863 64 0 64 64 0 8 0 rtmask 32 21 0 21 6 5 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 35992 0 35991 3 2 1 2 0 8 0 percpumem 16 253 0 204 1 0 1 1 0 8 0 kstatmem 264 210 0 182 5 2 3 3 0 8 0 scsiplug 72 4 0 4 3 3 0 1 0 8 0 scxspl 216 83544 0 83544 14 13 1 8 1 8 1 plimitpl 152 582 0 565 1 0 1 1 0 8 0 sigapl 424 2756 0 2700 7 0 7 7 0 8 0 knotepl 120 975 0 0 30 0 30 30 0 8 0 kqueuepl 224 1155 0 1146 12 7 5 5 0 8 4 pipepl 344 398 0 370 9 6 3 9 0 8 0 fdescpl 528 2723 0 2691 3 0 3 3 0 8 0 filepl 160 20542 0 20311 36 17 19 19 0 8 5 lockfpl 104 1695 0 1690 4 2 2 2 0 8 1 lockfspl 48 710 0 706 1 0 1 1 0 8 0 sessionpl 144 38 0 28 1 0 1 1 0 8 0 pgrppl 48 69 0 51 1 0 1 1 0 8 0 ucredpl 104 3462 0 3447 1 0 1 1 0 8 0 zombiepl 144 3634 0 3632 1 0 1 1 0 8 0 processpl 1248 2756 0 2700 5 0 5 5 0 8 0 procpl 664 6786 0 6720 7 0 7 7 0 8 0 sosppl 168 15 0 15 5 4 1 1 0 8 1 sockpl 752 5894 0 5857 65 46 19 19 0 8 13 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 115 0 0 11 0 11 11 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 262 0 0 16 0 16 16 0 8 0 bufpl 280 35214 0 29071 441 1 440 440 0 8 0 anonpl 32 17069 0 0 139 1 138 138 0 246 0 amapchunkpl 152 85615 0 84987 58 27 31 39 0 158 1 amappl16 200 11867 0 11525 86 67 19 36 0 8 0 amappl15 192 6 0 5 1 0 1 1 0 8 0 amappl14 184 151 0 138 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 3471 0 3439 3 1 2 2 0 8 0 amappl11 160 58 0 42 1 0 1 1 0 8 0 amappl10 152 6 0 6 2 2 0 1 0 8 0 amappl9 144 279 0 279 1 1 0 1 0 8 0 amappl8 136 26 0 22 1 0 1 1 0 8 0 amappl7 128 133 0 119 1 0 1 1 0 8 0 amappl6 120 250 0 245 1 0 1 1 0 8 0 amappl5 112 145 0 135 1 0 1 1 0 8 0 amappl4 104 346 0 326 1 0 1 1 0 8 0 amappl3 96 16976 0 16858 4 0 4 4 0 8 0 amappl2 88 799 0 730 2 0 2 2 0 8 0 amappl1 80 19976 0 19281 17 1 16 17 0 8 0 amappl 88 23516 0 23333 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma8192 8192 2 0 2 2 2 0 2 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 3 3 0 1 0 8 0 dma128 128 255 0 255 3 3 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 71 0 15 2 0 2 2 0 8 0 uaddrrnd 24 2723 0 2691 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2723 0 2691 1 0 1 1 0 8 0 vmmpekpl 168 23764 0 23712 3 0 3 3 0 8 0 vmmpepl 168 180060 0 177584 134 21 113 126 0 357 2 vmsppl 488 2722 0 2691 6 1 5 5 0 8 0 rwobjpl 80 55383 0 48025 154 3 151 152 0 8 0 pdppl 4096 5454 0 5382 126 52 74 86 0 8 2 pvpl 32 25980 0 0 211 1 210 211 0 265 0 pmappl 256 2722 0 2691 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 347 0 93 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837c4ff0) 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(ffffffff839714e0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839714e0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839714e0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839714e0) at __mp_lock+0x199 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x72530cf21b00, count: 4 ddb{0}> trace x86_ipi_db(ffffffff837c4ff0) 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(ffffffff839714e0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839714e0) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839714e0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839714e0) at __mp_lock+0x199 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x72530cf21b00, count: -11 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x778a51be6ac0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x778a51be6ac0, count: -1