uvm_fault(0xfffffd806f78f1f0, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81671408 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002c3e39e0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81671408 Starting stack trace... panic(ffffffff833d122f) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002c3e3930) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001678000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000363e8d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000363e8d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002c3e3ae0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806af6c968,81,fffffd80097fd6e8,ffff8000363e8d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c9c5b80,ffff8000363e8d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c9c5b80,ffff8000363e8d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c9c5b80,ffff8000363e8d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c9c5b80,ffff8000363e8d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000363e8d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000363e8d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000363e8d18,ffff80002c3e3e50,ffff80002c3e3da0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002c3e3e50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002c3e3e50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d0ebeffdd10, 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 31261 1719 0 0 0 0 syz-executor *484508 5722 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x78716f9a47d0, 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(0xfffffd806f78f1f0, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x78716f9a47d0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a3942b0 rbx 0 rdx 0 rcx 0xffff8000363e8a80 rax 0x2a r8 0xffff80002a3941e0 r9 0x1 r10 0xa6c5a00f82681f19 r11 0x96489b0935fb78c9 r12 0 r13 0xffffffff813e9b98 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff816c84c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a394230 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=484508 pid=5722 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000363e8d18,0xffff8000363e9258 process=0xffff8000fffeb9e0 user=0xffff80002a38f000, vmspace=0xfffffd800b063b70 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1719 31261 174 0 7 0 syz-executor 1719 1066 174 0 2 0x4000000 syz-executor * 5722 484508 29692 0 7 0 syz-executor 5722 153080 29692 0 2 0x4000000 syz-executor 83595 411664 98337 60929 3 0x90 nanoslp syz-executor 83595 466869 98337 60929 3 0x4000090 sbwait syz-executor 83595 380122 98337 60929 3 0x4000090 fsleep syz-executor 45324 358034 28388 60929 3 0x90 nanoslp syz-executor 45324 519864 28388 60929 3 0x4000090 kqread syz-executor 28388 270648 37940 0 3 0x82 nanoslp syz-executor 67660 447266 25401 0 2 0 syz-executor 67660 393406 25401 0 3 0x4000080 kqsel syz-executor 67660 495671 25401 0 3 0x4000080 fsleep syz-executor 6120 355573 37940 0 3 0x82 nanoslp syz-executor 25401 410281 37940 0 2 0x2 syz-executor 92908 177151 37940 0 3 0x82 nanoslp syz-executor 174 429094 37940 0 3 0x82 nanoslp syz-executor 73017 147293 0 0 3 0x14280 nfsidl nfsio 61671 449526 0 0 3 0x14280 nfsidl nfsio 15712 336747 0 0 3 0x14280 nfsidl nfsio 60766 324665 0 0 3 0x14280 nfsidl nfsio 99879 222219 37940 0 3 0x2 biowait syz-executor 58569 358673 1 0 3 0x100083 ttyopn getty 98337 26665 37940 0 3 0x82 nanoslp syz-executor 29692 473911 37940 0 3 0x82 nanoslp syz-executor 37940 438738 28799 0 3 0x82 kqread syz-executor 28799 424166 14727 0 3 0x10008a sigsusp ksh 14727 332232 22456 0 3 0x98 kqread sshd-session 22456 463495 13711 0 3 0x92 kqread sshd-session 13711 362353 1 0 3 0x88 kqread sshd 54870 36691 54520 74 3 0x1100092 bpf pflogd 54520 200659 1 0 3 0x80 sbwait pflogd 84656 494758 10191 73 3 0x1100090 kqread syslogd 10191 301314 1 0 3 0x100082 sbwait syslogd 45250 381 1 0 3 0x100080 kqread resolvd 2565 148475 75392 77 3 0x100092 kqread dhcpleased 75449 133910 75392 77 3 0x100092 kqread dhcpleased 75392 364977 1 0 3 0x80 kqread dhcpleased 47188 390712 0 0 3 0x14200 bored smr 66130 112287 0 0 2 0x14200 zerothread 1094 18792 0 0 3 0x14200 aiodoned aiodoned 21306 510387 0 0 3 0x14200 syncer update 7041 238477 0 0 3 0x14200 cleaner cleaner 20673 312847 0 0 3 0x14200 reaper reaper 75593 58788 0 0 3 0x14200 pgdaemon pagedaemon 36969 420810 0 0 3 0x14200 bored viomb 84496 256284 0 0 3 0x40014200 acpi0 acpi0 90078 491790 0 0 3 0x40014200 idle1 13470 487878 0 0 3 0x14200 bored softnet1 47651 123107 0 0 3 0x14200 netlock softnet0 46945 364780 0 0 2 0x14200 systqmp 54200 243621 0 0 3 0x14200 bored systq 31644 310720 0 0 3 0x14200 tmoslp softclockmp 27967 88037 0 0 3 0x40014200 tmoslp softclock 52464 79382 0 0 3 0x40014200 idle0 1 196241 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 99879 (syz-executor) thread 0xffff80003b3ff790 (222219) exclusive rrwlock inode r = 0 (0xfffffd8064a8b7e0) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8060c32da0) #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+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10273 11232K 12207K 166960K 15815 0 pcb 18 16K 18K 166960K 655 0 rtable 264 13K 14K 166960K 906 0 pf 41 18K 82K 166960K 265 0 ifaddr 43 8K 8K 166960K 185 0 ifgroup 64 2K 3K 166960K 312 0 sysctl 4 1K 9K 166960K 101 0 counters 72 37K 38K 166960K 536 0 ioctlops 0 0K 4K 166960K 2327 0 iov 0 0K 24K 166960K 155 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1494 94K 94K 166960K 3822 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 40 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 169 0 dirhash 12 2K 3K 166960K 60 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 2636 0 sigio 0 0K 0K 166960K 35 0 proc 72 115K 180K 166960K 1041 0 subproc 72 4K 4K 166960K 163 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 358 0 in_multi 89 6K 7K 166960K 317 0 ether_multi 1 0K 0K 166960K 34 0 mrt 1 0K 0K 166960K 23 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 897 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 240 159K 185K 166960K 25046 0 UVM aobj 20 14K 16K 166960K 24 0 pinsyscall 42 84K 100K 166960K 4033 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 1K 166960K 157 0 NDP 16 0K 1K 166960K 135 0 temp 77 8664K 8908K 166960K 109354 0 kqueue 14 22K 34K 166960K 498 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 120 252 0 249 1 0 1 1 0 8 0 rtentry 176 270 0 166 6 1 5 6 0 8 0 unpcb 144 2048 0 2027 24 18 6 6 0 8 5 syncache 336 12 0 12 5 4 1 1 0 8 1 tcpqe 32 6 0 6 2 2 0 1 0 8 0 tcpcb 736 820 0 813 18 11 7 7 0 8 6 arp 136 41 0 20 1 0 1 1 0 8 0 inpcb 328 2838 0 2824 27 18 9 9 0 8 7 nd6 152 61 0 37 1 0 1 1 0 8 0 pkpcb 40 9 0 9 5 4 1 1 0 8 1 kcovpl 48 18 0 10 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 201 0 201 5 4 1 1 0 8 1 pppxif 1504 13 0 13 8 7 1 1 0 8 1 pffrag 232 18 0 11 1 0 1 1 0 482 0 pffrnode 88 16 0 9 1 0 1 1 0 8 0 pffrent 40 60 0 53 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 7 0 7 4 4 0 1 0 8 0 pfstitem 24 146 0 70 1 0 1 1 0 8 0 pfstkey 128 146 0 70 3 0 3 3 0 8 0 pfstate 448 146 0 70 10 1 9 9 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 6 0 2 6 1 5 5 0 8 1 art_heap4 256 1240 0 794 45 12 33 33 0 8 4 art_table 40 1246 0 796 6 0 6 6 0 8 1 art_node 32 269 0 178 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 11 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 160 0 150 1 0 1 1 0 8 0 shmpl 112 14 0 3 1 0 1 1 0 8 0 dirhash 1024 49 0 32 3 0 3 3 0 8 0 dino2pl 256 5937 0 4410 96 0 96 96 0 8 0 ffsino 296 5937 0 4410 119 0 119 119 0 8 0 nchpl 144 9484 0 7746 65 0 65 65 0 8 0 rtmask 32 17 0 17 7 6 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 35672 0 35672 5 4 1 2 0 8 1 percpumem 16 283 0 232 1 0 1 1 0 8 0 vcpupl 3968 7 0 1 1 0 1 1 0 8 0 vmpool 840 7 0 1 1 0 1 1 0 8 0 kstatmem 264 200 0 168 5 2 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 8 0 8 6 5 1 1 0 8 1 scxspl 216 51408 0 51407 18 17 1 8 1 8 0 plimitpl 152 815 0 797 1 0 1 1 0 8 0 sigapl 424 2950 0 2899 9 1 8 8 0 8 0 knotepl 120 844 0 0 24 0 24 24 0 8 0 kqueuepl 224 966 0 954 11 9 2 5 0 8 0 pipepl 344 542 0 514 9 6 3 9 0 8 0 fdescpl 528 2890 0 2859 3 0 3 3 0 8 0 filepl 160 20227 0 19998 34 16 18 18 0 8 4 lockfpl 104 1318 0 1316 3 2 1 2 0 8 0 lockfspl 48 540 0 538 1 0 1 1 0 8 0 sessionpl 144 40 0 31 1 0 1 1 0 8 0 pgrppl 48 146 0 129 1 0 1 1 0 8 0 ucredpl 104 3499 0 3483 1 0 1 1 0 8 0 zombiepl 144 3380 0 3378 3 2 1 1 0 8 0 processpl 1232 2950 0 2899 6 0 6 6 0 8 0 procpl 664 7130 0 7072 9 2 7 8 0 8 0 sosppl 176 21 0 21 7 6 1 1 0 8 1 sockpl 752 5230 0 5192 74 61 13 23 0 8 8 mcl64k 65536 18 0 0 3 0 3 3 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 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 137 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 54 0 0 5 0 5 5 0 8 0 mtagpl 96 29 0 0 1 0 1 1 0 8 0 mbufpl 256 1192 0 0 72 0 72 72 0 8 0 bufpl 280 18738 0 12601 439 0 439 439 0 8 0 anonpl 32 13378 0 0 108 0 108 108 0 246 0 amapchunkpl 152 88162 0 87683 70 33 37 37 0 158 15 amappl16 200 8064 0 8032 74 64 10 29 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 6 0 6 1 1 0 1 0 8 0 amappl13 176 547 0 546 1 0 1 1 0 8 0 amappl12 168 3330 0 3288 3 0 3 3 0 8 0 amappl11 160 11 0 10 1 0 1 1 0 8 0 amappl10 152 51 0 37 1 0 1 1 0 8 0 amappl9 144 256 0 256 1 1 0 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 215 0 213 1 0 1 1 0 8 0 amappl6 120 411 0 396 1 0 1 1 0 8 0 amappl5 112 88 0 77 1 0 1 1 0 8 0 amappl4 104 504 0 475 1 0 1 1 0 8 0 amappl3 96 15433 0 15340 4 1 3 3 0 8 0 amappl2 88 3037 0 2957 2 0 2 2 0 8 0 amappl1 80 21642 0 21051 14 0 14 14 0 8 0 amappl 88 23711 0 23548 5 0 5 5 0 92 0 uvmvnodes 80 188 0 0 4 0 4 4 0 8 0 dma65536 65536 3 0 3 3 3 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 8 0 8 2 1 1 1 0 8 1 dma128 128 259 0 259 6 5 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 23 0 4 1 0 1 1 0 8 0 uaddrrnd 24 2890 0 2859 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2890 0 2859 1 0 1 1 0 8 0 vmmpekpl 168 22519 0 22457 4 0 4 4 0 8 0 vmmpepl 168 186046 0 184118 148 50 98 111 0 357 3 vmsppl 488 2889 0 2859 5 0 5 5 0 8 0 rwobjpl 80 48399 0 47254 44 11 33 35 0 8 0 pdppl 4096 5802 0 5726 141 61 80 84 0 8 4 pvpl 32 21860 0 0 177 1 176 176 0 265 0 pmappl 256 2896 0 2860 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 441 0 102 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8388aff0) 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(ffffffff8390d980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8390d980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff8390d980) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8390d980) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 intr_handler(ffff8000303d6240,ffff80000006b400) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x797e1bb12b60, count: 4 ddb{0}> trace x86_ipi_db(ffffffff8388aff0) 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(ffffffff8390d980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8390d980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff8390d980) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8390d980) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 intr_handler(ffff8000303d6240,ffff80000006b400) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x797e1bb12b60, 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: 0x78716f9a47d0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x78716f9a47d0, count: -1