-4r#-kh ?&n~yu6qZsTHw\og`7U!+A;JbQ07s#uFZIl!x@PjtbWf9NeuUzX'Ge9^oQ*eOeL{XSR wkN<0XSR wkN<0ö°öèÍ™š)¯ uvm_fault(0xfffffd806c064d80, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff827b0788 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003a80b6c0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff827b0788 Starting stack trace... panic(ffffffff833ba739) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003a80b610) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015d8000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(31e5f,81,2000,ffff80003c5cf790) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff80003c5cf790) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003a80b7c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8068783e98,81,fffffd80097fb618,ffff80003c5cf790) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805d414558,ffff80003c5cf790) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805d414558,ffff80003c5cf790) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805d414558,ffff80003c5cf790) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805d414558,ffff80003c5cf790) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c5cf790) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c5cf790,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c5cf790,ffff80003a80bb30,ffff80003a80ba80) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003a80bb30) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a80bb30) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70d2bc0f5d10, count: 242 End of stack trace. WA RNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *135280 53873 0 0 0 1 syz-executor 329901 96505 0 0x2 0 0 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x707ec4d1e950, 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(0xfffffd806c064d80, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x707ec4d1e950, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003ac21840 rbx 0 rdx 0 rcx 0xffff80002a272540 rax 0x2a r8 0xffff80003ac21770 r9 0x1 r10 0xeb1836a5283de55b r11 0x6666a6d723d7f56a r12 0 r13 0xffffffff828cb568 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff81f794c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003ac217c0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=135280 pid=53873 tcnt=3 stat=onproc flags process=0 proc=0 runpri=86, usrpri=84, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003a7fc7e8,0xffff80002a272d18 process=0xffff80003c5d2b78 user=0xffff80003ac1c000, vmspace=0xfffffd806c064028 estcpu=34, cpticks=7, pctcpu=0.6, user=6, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58114 157402 47739 0 2 0 syz-executor *53873 135280 36756 0 7 0 syz-executor 53873 54324 36756 0 3 0x4000080 fsleep syz-executor 53873 178902 36756 0 2 0x4000000 syz-executor 67245 67189 8075 0 2 0 syz-executor 67245 173262 8075 0 3 0x4000080 fsleep syz-executor 50688 72860 96505 0 2 0 syz-executor 50688 13336 96505 0 3 0x4000080 netcon syz-executor 50688 433262 96505 0 3 0x4000080 sbwait syz-executor 48060 71301 22388 0 2 0 syz-executor 48060 463597 22388 0 3 0x4000000 smrbar syz-executor 48060 341256 22388 0 2 0x4000000 syz-executor 96142 170584 19852 0 2 0xc82 syz-executor 96505 329901 19852 0 7 0x2 syz-executor 93829 328648 38128 0 3 0x82 sbwait sshd-session 9002 308437 1 0 2 0x100083 getty 56737 359716 0 0 3 0x14200 bored sosplice 91696 471665 19852 0 2 0x2 syz-executor 8075 167186 19852 0 2 0xc82 syz-executor 22388 70658 19852 0 2 0xc82 syz-executor 36756 278225 19852 0 2 0xc82 syz-executor 47739 87278 19852 0 2 0xc82 syz-executor 69258 376961 19852 0 2 0x2 syz-executor 19852 223447 11509 0 3 0x82 kqread syz-executor 11509 402900 16827 0 3 0x10008a sigsusp ksh 16827 509441 18235 0 3 0x98 kqread sshd-session 18235 242551 38128 0 3 0x92 kqread sshd-session 38128 35889 1 0 3 0x88 kqread sshd 12481 268521 58054 74 3 0x1100092 bpf pflogd 58054 62393 1 0 3 0x80 sbwait pflogd 50777 366229 64739 73 3 0x1100090 kqread syslogd 64739 517878 1 0 3 0x100082 sbwait syslogd 17618 216621 1 0 3 0x100080 kqread resolvd 79488 432660 45361 77 3 0x100092 kqread dhcpleased 43152 369048 45361 77 3 0x100092 kqread dhcpleased 45361 38171 1 0 3 0x80 kqread dhcpleased 95281 197111 0 0 2 0x14200 smr 59849 446822 0 0 2 0x14200 zerothread 30483 299228 0 0 3 0x14200 aiodoned aiodoned 22375 351734 0 0 2 0x14e00 update 40929 304821 0 0 3 0x14200 cleaner cleaner 5199 155886 0 0 3 0x14200 reaper reaper 65749 244277 0 0 3 0x14200 pgdaemon pagedaemon 21209 352833 0 0 3 0x14200 bored viomb 95706 522640 0 0 3 0x40014200 acpi0 acpi0 90648 415552 0 0 3 0x40014200 idle1 40953 323530 0 0 3 0x14200 bored softnet1 18135 365760 0 0 2 0x14200 softnet0 7143 329002 0 0 2 0x14200 systqmp 93258 389650 0 0 3 0x14200 bored systq 82938 103779 0 0 3 0x14200 netlock softclockmp 94050 369319 0 0 3 0x40014200 tmoslp softclock 89033 183512 0 0 3 0x40014200 idle0 1 456355 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 53873 (syz-executor) thread 0xffff80003a7fd4e0 (178902) exclusive rwlock vmmaplk r = 0 (0xfffffd806c064128) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #7 recall_trap+0x8 Process 48060 (syz-executor) thread 0xffff80003c5ce2d0 (463597) exclusive rwlock clonelk r = 0 (0xffffffff837f2938) #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 if_clone_destroy+0x67 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2092 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #6 Xsyscall+0x128 Process 48060 (syz-executor) thread 0xffff80003a7fe558 (341256) exclusive rwlock vmmaplk r = 0 (0xfffffd806c064c98) #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:5171 #3 uvm_map_protect+0xe0 sys/uvm/uvm_map.c:3064 #4 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #6 Xsyscall+0x128 Process 91696 (syz-executor) thread 0xffff8000fffeed10 (471665) exclusive rwlock vmmaplk r = 0 (0xfffffd806c0646e0) #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:5171 #3 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3741 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd806eeb9108) #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:5171 #3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3732 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10267 11133K 12156K 166960K 12973 0 pcb 17 15K 16K 166960K 631 0 rtable 256 23K 23K 166960K 851 0 pf 46 19K 67487K 166960K 344 0 ifaddr 45 8K 8K 166960K 200 0 ifgroup 68 2K 3K 166960K 349 0 sysctl 4 1K 9K 166960K 91 0 counters 74 37K 38K 166960K 402 0 ioctlops 0 0K 8K 166960K 2086 0 iov 0 0K 24K 166960K 300 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1443 91K 92K 166960K 3336 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 42 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 124 0 dirhash 12 2K 3K 166960K 54 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 2521 0 sigio 0 0K 0K 166960K 48 0 proc 72 115K 164K 166960K 869 0 subproc 72 4K 4K 166960K 112 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 407 0 in_multi 75 5K 7K 166960K 253 0 ether_multi 1 0K 0K 166960K 25 0 mrt 1 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 1004 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 245 167K 195K 166960K 25665 0 UVM aobj 32 3K 3K 166960K 39 0 pinsyscall 44 88K 100K 166960K 3783 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 177 0 NDP 15 0K 2K 166960K 146 0 temp 76 8660K 8740K 166960K 124604 0 kqueue 14 22K 30K 166960K 539 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 120 428 0 425 4 3 1 3 0 8 0 rtentry 176 236 0 145 6 0 6 6 0 8 0 unpcb 144 1724 0 1705 21 19 2 8 0 8 1 syncache 336 10 0 10 5 5 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 1199 0 1189 24 22 2 7 0 8 0 arp 136 39 0 19 1 0 1 1 0 8 0 inpcb 328 3356 0 3340 37 30 7 10 0 8 5 nd6 152 46 0 26 1 0 1 1 0 8 0 pkpcb 40 23 0 23 6 5 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 135 0 135 4 3 1 1 0 8 1 pppxif 1504 15 0 15 5 5 0 1 0 8 0 pfstscr 40 3 0 3 2 2 0 1 0 8 0 pffrag 232 30 0 19 1 0 1 1 0 482 0 pffrnode 88 26 0 15 1 0 1 1 0 8 0 pffrent 40 51 0 40 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 4 0 1 1 0 1 1 0 8 0 pftag 88 4 0 1 1 0 1 1 0 8 0 pfstitem 24 188 0 85 1 0 1 1 0 8 0 pfstkey 128 195 0 93 4 0 4 4 0 8 0 pfstate 384 190 0 89 11 0 11 11 0 8 0 pfrule 1344 98 0 91 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 7 0 2 7 1 6 6 0 8 1 art_heap4 256 920 0 583 31 9 22 29 0 8 0 art_table 40 927 0 585 5 0 5 5 0 8 0 art_node 32 232 0 157 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 118 0 108 1 0 1 1 0 8 0 shmpl 112 36 0 7 1 0 1 1 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 6335 0 4817 96 0 96 96 0 8 0 ffsino 296 6335 0 4817 118 0 118 118 0 8 0 nchpl 144 9902 0 8189 64 0 64 64 0 8 0 rtmask 32 22 0 22 6 5 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 35027 0 35027 7 6 1 3 0 8 1 percpumem 16 216 0 164 1 0 1 1 0 8 0 kstatmem 264 242 0 208 3 0 3 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 10 0 10 6 5 1 1 0 8 1 scxspl 216 72967 0 72967 12 11 1 8 1 8 1 plimitpl 152 724 0 707 1 0 1 1 0 8 0 sigapl 424 2860 0 2811 8 1 7 8 0 8 0 knotepl 120 594 0 0 17 0 17 17 0 8 0 kqueuepl 224 1154 0 1143 14 12 2 5 0 8 1 pipepl 344 420 0 392 9 6 3 6 0 8 0 fdescpl 528 2812 0 2780 3 0 3 3 0 8 0 filepl 160 19845 0 19615 35 22 13 19 0 8 1 lockfpl 104 830 0 828 1 0 1 1 0 8 0 lockfspl 48 359 0 357 1 0 1 1 0 8 0 sessionpl 144 33 0 23 1 0 1 1 0 8 0 pgrppl 48 72 0 54 1 0 1 1 0 8 0 ucredpl 104 3442 0 3428 1 0 1 1 0 8 0 zombiepl 144 3817 0 3816 1 0 1 1 0 8 0 processpl 1232 2860 0 2811 6 1 5 6 0 8 0 procpl 664 7258 0 7201 8 1 7 8 0 8 0 sosppl 168 14 0 14 7 6 1 1 0 8 1 sockpl 752 5596 0 5558 66 55 11 24 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 66 0 0 7 1 6 7 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 611 0 0 39 0 39 39 0 8 0 bufpl 280 29500 0 23363 439 0 439 439 0 8 0 anonpl 32 14173 0 0 114 0 114 114 0 246 0 amapchunkpl 152 87652 0 87180 60 31 29 39 0 158 7 amappl16 200 10831 0 10796 80 69 11 33 0 8 0 amappl15 192 90 0 90 3 2 1 1 0 8 1 amappl14 184 8 0 8 2 2 0 1 0 8 0 amappl13 176 472 0 470 1 0 1 1 0 8 0 amappl12 168 3213 0 3170 3 0 3 3 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 56 0 42 1 0 1 1 0 8 0 amappl9 144 252 0 251 2 1 1 1 0 8 0 amappl8 136 30 0 28 1 0 1 1 0 8 0 amappl7 128 96 0 94 1 0 1 1 0 8 0 amappl6 120 343 0 328 1 0 1 1 0 8 0 amappl5 112 89 0 74 1 0 1 1 0 8 0 amappl4 104 479 0 447 1 0 1 1 0 8 0 amappl3 96 15642 0 15553 4 1 3 3 0 8 0 amappl2 88 2987 0 2902 3 0 3 3 0 8 0 amappl1 80 20865 0 20186 16 0 16 16 0 8 0 amappl 88 24422 0 24260 5 0 5 5 0 92 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 dma65536 65536 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 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 9 0 9 3 3 0 1 0 8 0 dma128 128 258 0 258 6 5 1 1 0 8 1 dma64 64 9 0 9 3 3 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 22 0 21 1 0 1 1 0 8 0 aobjpl 72 38 0 7 1 0 1 1 0 8 0 uaddrrnd 24 2812 0 2780 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2812 0 2780 1 0 1 1 0 8 0 vmmpekpl 168 24044 0 23996 3 0 3 3 0 8 0 vmmpepl 168 185249 0 183221 145 42 103 115 0 357 0 vmsppl 488 2811 0 2780 6 1 5 5 0 8 0 rwobjpl 80 56389 0 49396 150 3 147 150 0 8 0 pdppl 4096 5632 0 5560 118 44 74 84 0 8 2 pvpl 32 28442 0 0 228 0 228 228 0 265 0 pmappl 256 2811 0 2780 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 369 0 96 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8378fff0) 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(ffffffff839c9568) at __mp_lock+0x19e __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c9568) at __mp_lock+0x19e sys/kern/kern_lock.c:165 syscall(ffff80002a324100) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a324100) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74880be11d10, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8378fff0) 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(ffffffff839c9568) at __mp_lock+0x19e __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c9568) at __mp_lock+0x19e sys/kern/kern_lock.c:165 syscall(ffff80002a324100) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a324100) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74880be11d10, count: -6 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: 0x707ec4d1e950, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x707ec4d1e950, count: -1