panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *421978 70679 32767 0x10 0x4000000 0K syz-executor 474890 19093 32767 0x10 0x4000000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830b7b9c) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069a9b898,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069a9b898,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff80002cb311b4,5,20000100,ffff80002cb311e8,0,37,ca1defb8cdfc378d) at kern_sysctl+0x38e sysctl_vsunlock sys/kern/kern_sysctl.c:204 [inline] kern_sysctl(ffff80002cb311b4,5,20000100,ffff80002cb311e8,0,37,ca1defb8cdfc378d) at kern_sysctl+0x38e sys/kern/kern_sysctl.c:502 sys_sysctl(ffff80002a11af70,ffff80002cb31320,ffff80002cb31270) at sys_sysctl+0x422 syscall(ffff80002cb31320) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002cb31320) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbe4d631f720, count: 7 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_unwire_locked: address not in map ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830b7b9c) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069a9b898,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069a9b898,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff80002cb311b4,5,20000100,ffff80002cb311e8,0,37,ca1defb8cdfc378d) at kern_sysctl+0x38e sysctl_vsunlock sys/kern/kern_sysctl.c:204 [inline] kern_sysctl(ffff80002cb311b4,5,20000100,ffff80002cb311e8,0,37,ca1defb8cdfc378d) at kern_sysctl+0x38e sys/kern/kern_sysctl.c:502 sys_sysctl(ffff80002a11af70,ffff80002cb31320,ffff80002cb31270) at sys_sysctl+0x422 syscall(ffff80002cb31320) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002cb31320) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbe4d631f720, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002cb30e60 rbx 0xffffffff83469d87 cpu_info_full_primary+0x2d87 rdx 0 rcx 0xffff80002a11af70 rax 0xffffffff83468ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xfb749b61569e38a9 r11 0xab77d9d4b428641c r12 0xffffffff83469b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff82330ee5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002cb30e50 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=421978 pid=70679 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a11aa60,0xffff80002a11a7e8 process=0xffff8000ffff0018 user=0xffff80002cb2c000, vmspace=0xfffffd8069a9b898 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 93442 521645 81796 32767 2 0x10 syz-executor 93442 501889 81796 32767 2 0x4000010 syz-executor 70679 287751 25886 32767 2 0x10 syz-executor 70679 226892 25886 32767 2 0x4000010 syz-executor *70679 421978 25886 32767 7 0x4000010 syz-executor 70679 16986 25886 32767 3 0x4000090 fsleep syz-executor 19093 476490 65288 32767 2 0x10 syz-executor 19093 474890 65288 32767 7 0x4000010 syz-executor 83460 186355 92119 32767 2 0x10 syz-executor 83460 391438 92119 32767 3 0x4000090 fsleep syz-executor 42811 499856 41356 32767 2 0x10 syz-executor 42811 218025 41356 32767 3 0x4000090 sbwait syz-executor 42811 477116 41356 32767 2 0x4000010 syz-executor 10294 351898 834 32767 2 0x10 syz-executor 10294 293729 834 32767 2 0x4000010 syz-executor 10294 505802 834 32767 2 0x4000010 syz-executor 8803 24944 60209 32767 2 0x10 syz-executor 8803 82521 60209 32767 2 0x4000010 syz-executor 8803 442608 60209 32767 3 0x4000090 fsleep syz-executor 834 144825 18924 32767 3 0x90 nanoslp syz-executor 18924 389043 44425 0 3 0x82 wait syz-executor 65288 308307 56962 32767 3 0x90 nanoslp syz-executor 56962 31345 44425 0 3 0x82 wait syz-executor 60209 80421 29914 32767 3 0x90 nanoslp syz-executor 25886 351004 86989 32767 3 0x90 nanoslp syz-executor 29914 232528 44425 0 3 0x82 wait syz-executor 86989 46529 44425 0 3 0x82 wait syz-executor 81796 56683 41901 32767 3 0x90 nanoslp syz-executor 41901 24648 44425 0 3 0x82 wait syz-executor 41356 111570 12495 32767 3 0x90 nanoslp syz-executor 12495 401095 44425 0 3 0x82 wait syz-executor 92119 216804 42314 32767 3 0x90 nanoslp syz-executor 42314 414433 44425 0 3 0x82 wait syz-executor 7387 432832 8621 32767 3 0x90 wait syz-executor 8621 302446 44425 0 3 0x82 wait syz-executor 50309 207979 0 0 3 0x14200 bored sosplice 44425 115715 56942 0 3 0x82 kqread syz-executor 56942 311270 40944 0 3 0x10008a sigsusp ksh 40944 106571 95771 0 3 0x98 kqread sshd-session 95771 159669 27521 0 3 0x92 kqread sshd-session 86411 229043 1 0 3 0x100083 ttyin getty 27521 179180 1 0 3 0x88 kqread sshd 9105 295785 87445 73 3 0x1100090 kqread syslogd 87445 52929 1 0 3 0x100082 sbwait syslogd 7942 158487 1 0 3 0x100080 kqread resolvd 79333 333424 22549 77 3 0x100092 kqread dhcpleased 10806 19056 22549 77 3 0x100092 kqread dhcpleased 22549 472496 1 0 3 0x80 kqread dhcpleased 41491 114323 0 0 3 0x14200 bored smr 64254 126153 0 0 2 0x14200 zerothread 95197 256793 0 0 3 0x14200 aiodoned aiodoned 72961 336833 0 0 3 0x14200 syncer update 23072 373162 0 0 3 0x14200 cleaner cleaner 67371 90232 0 0 3 0x14200 reaper reaper 49337 194717 0 0 3 0x14200 pgdaemon pagedaemon 72997 848 0 0 3 0x14200 bored viomb 16238 85326 0 0 3 0x40014200 acpi0 acpi0 75205 309810 0 0 3 0x40014200 idle1 30878 15993 0 0 3 0x14200 bored softnet3 70013 492880 0 0 3 0x14200 bored softnet2 35845 519620 0 0 3 0x14200 bored softnet1 22055 259404 0 0 3 0x14200 bored softnet0 16246 469498 0 0 3 0x14200 bored systqmp 65175 74826 0 0 3 0x14200 bored systq 61333 280300 0 0 3 0x14200 tmoslp softclockmp 88242 49643 0 0 3 0x40014200 tmoslp softclock 55248 483020 0 0 3 0x40014200 idle0 1 45936 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 70679 (syz-executor) thread 0xffff80002a11af70 (421978) shared rwlock vmmaplk r = 0 (0xfffffd8069a9b988) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1622 #2 kern_sysctl+0x38e sysctl_vsunlock sys/kern/kern_sysctl.c:204 [inline] #2 kern_sysctl+0x38e sys/kern/kern_sysctl.c:502 #3 sys_sysctl+0x422 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835a9898) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #6 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #7 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #8 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #9 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #10 alltraps_kern_meltdown+0x7b #11 copyout+0x62 #12 kern_sysctl+0x320 sys/kern/kern_sysctl.c:500 #13 sys_sysctl+0x422 #14 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #14 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #15 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff8349c950) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:176 #3 kern_sysctl+0x1b3 sys/kern/kern_sysctl.c:498 #4 sys_sysctl+0x422 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10244 14127K 14131K 166960K 13241 0 pcb 17 20K 22K 166960K 25 0 rtable 246 7K 7K 166960K 22221 0 pf 31 16K 16K 166960K 1317 0 ifaddr 42 15K 18K 166960K 2597 0 ifgroup 50 2K 2K 166960K 2614 0 sysctl 4 1K 5K 166960K 17 0 counters 64 36K 36K 166960K 1342 0 ioctlops 0 0K 2K 166960K 1528 0 iov 0 0K 20K 166960K 3892 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 18320 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 725 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 1794 0 dirhash 24 4K 5K 166960K 1044 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 26 97K 157K 166960K 41993 0 sigio 0 0K 0K 166960K 1493 0 proc 58 79K 176K 166960K 21960 0 subproc 104 6K 13K 166960K 9763 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 9679 0 in_multi 99 7K 8K 166960K 8766 0 ether_multi 1 0K 0K 166960K 301 0 mrt 2 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 403 1791K 1791K 166960K 403 0 exec 0 0K 1K 166960K 15389 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 286 80K 139K 166960K 363021 0 UVM aobj 131 4K 8K 166960K 143 0 pinsyscall 47 94K 130K 166960K 62297 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 3092 0 NDP 13 0K 2K 166960K 1931 0 temp 75 6824K 6952K 166960K 344210 0 kqueue 13 20K 37K 166960K 7027 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 6245 0 6242 43 41 2 5 0 8 1 rtentry 112 7488 0 7372 18 14 4 4 0 8 0 unpcb 144 40186 0 40168 169 167 2 9 0 8 1 syncache 336 691 0 691 37 36 1 1 0 8 1 tcpqe 32 280 0 280 54 54 0 1 0 8 0 tcpcb 808 25586 0 25572 267 252 15 16 0 8 12 arp 120 1314 0 1295 1 0 1 1 0 8 0 ipq 40 210 0 201 6 5 1 1 0 8 0 ipqe 40 2692 0 2682 6 5 1 1 0 8 0 inpcb 336 61539 0 61520 333 319 14 16 0 8 9 ip6q 72 9 0 9 8 7 1 1 0 8 1 ip6af 40 18 0 18 8 7 1 1 0 8 1 nd6 136 2301 0 2272 10 8 2 2 0 8 0 kcovpl 48 751 0 743 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 30177 0 29706 187 156 31 33 0 8 1 art_table 32 30178 0 29706 11 7 4 5 0 8 0 art_node 16 7487 0 7381 1 0 1 1 0 8 0 sysvmsgpl 40 114 0 109 4 3 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 1787 0 1777 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 720 0 687 18 13 5 5 0 8 0 dino2pl 256 55263 0 51439 241 1 240 240 0 8 0 ffsino 272 55263 0 51439 260 4 256 256 0 8 0 nchpl 144 100688 0 97512 118 0 118 118 0 8 0 uvmvnodes 80 10762 0 0 220 0 220 220 0 8 0 vnodes 216 10762 0 0 598 0 598 598 0 8 0 namei 1024 441491 0 441491 37 36 1 2 0 8 1 percpumem 16 685 0 639 1 0 1 1 0 8 0 kstatmem 264 1300 0 1278 3 1 2 2 0 8 0 scxspl 216 432101 0 432101 93 90 3 8 1 8 3 plimitpl 152 14568 0 14543 2 0 2 2 0 8 0 sigapl 424 41346 0 41289 25 18 7 9 0 8 0 futexpl 64 493663 0 493660 37 36 1 1 0 8 0 knotepl 120 1938 0 0 25 0 25 25 0 8 0 kqueuepl 216 14956 0 14947 121 119 2 7 0 8 1 pipepl 320 8489 0 8461 109 106 3 13 0 8 0 fdescpl 496 41327 0 41289 21 15 6 7 0 8 0 filepl 152 305462 0 305215 215 199 16 24 0 8 2 lockfpl 104 10551 0 10549 8 7 1 4 0 8 0 lockfspl 48 3224 0 3222 1 0 1 1 0 8 0 sessionpl 144 1222 0 1206 1 0 1 1 0 8 0 pgrppl 48 2625 0 2601 1 0 1 1 0 8 0 ucredpl 104 60687 0 60668 1 0 1 1 0 8 0 zombiepl 144 41290 0 41289 1 0 1 1 0 8 0 processpl 1160 41346 0 41289 8 3 5 6 0 8 0 procpl 648 96610 0 96541 12 5 7 7 0 8 0 srpgc 96 31 0 31 14 14 0 1 0 8 0 sosppl 168 531 0 531 33 32 1 1 0 8 1 sockpl 664 109155 0 109111 474 457 17 27 0 8 10 mcl64k 65536 57 0 0 5 2 3 3 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 722 0 0 28 7 21 28 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 6905 0 0 359 0 359 359 0 8 0 bufpl 280 69742 0 58976 770 0 770 770 0 8 0 anonpl 24 4879246 0 4864137 557 440 117 138 0 185 0 amapchunkpl 152 1172305 0 1171397 365 323 42 51 0 158 3 amappl16 200 100733 0 100272 498 461 37 48 0 8 6 amappl15 192 13 0 13 7 7 0 1 0 8 0 amappl14 184 2518 0 2508 1 0 1 1 0 8 0 amappl13 176 47 0 46 26 25 1 1 0 8 0 amappl12 168 52686 0 52648 15 13 2 3 0 8 0 amappl11 160 56 0 45 1 0 1 1 0 8 0 amappl10 152 12 0 11 2 1 1 1 0 8 0 amappl9 144 140 0 139 1 0 1 1 0 8 0 amappl8 136 20 0 18 1 0 1 1 0 8 0 amappl7 128 1926 0 1915 1 0 1 1 0 8 0 amappl6 120 6497 0 6495 1 0 1 1 0 8 0 amappl5 112 3247 0 3236 1 0 1 1 0 8 0 amappl4 104 4519 0 4502 1 0 1 1 0 8 0 amappl3 96 242845 0 242703 6 2 4 5 0 8 0 amappl2 88 16062 0 15996 2 0 2 2 0 8 0 amappl1 80 314238 0 313692 36 21 15 16 0 8 1 amappl 88 351781 0 351550 7 1 6 6 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 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 41327 0 41289 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 41327 0 41289 1 0 1 1 0 8 0 vmmpekpl 168 400658 0 400610 6 2 4 5 0 8 0 vmmpepl 168 2719541 0 2716994 500 359 141 141 0 357 16 vmsppl 440 41326 0 41289 9 4 5 6 0 8 0 rwobjpl 56 719179 0 706946 227 50 177 177 0 8 0 pdppl 4096 82661 0 82578 1657 1572 85 115 0 8 2 pvpl 32 53167 0 0 426 0 426 426 0 265 0 pmappl 248 41326 0 41289 11 8 3 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3438 0 2400 31 1 30 30 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830b7b9c) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069a9b898,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069a9b898,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff80002cb311b4,5,20000100,ffff80002cb311e8,0,37,ca1defb8cdfc378d) at kern_sysctl+0x38e sysctl_vsunlock sys/kern/kern_sysctl.c:204 [inline] kern_sysctl(ffff80002cb311b4,5,20000100,ffff80002cb311e8,0,37,ca1defb8cdfc378d) at kern_sysctl+0x38e sys/kern/kern_sysctl.c:502 sys_sysctl(ffff80002a11af70,ffff80002cb31320,ffff80002cb31270) at sys_sysctl+0x422 syscall(ffff80002cb31320) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002cb31320) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbe4d631f720, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff835a9690) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a9690) at __mp_lock+0x192 sys/kern/kern_lock.c:144 vn_ioctl(fffffd80688448e8,80044b02,ffff80002a0f69d0,ffff80002cb40048) at vn_ioctl+0x4d sys/kern/vfs_vnops.c:508 sys_ioctl(ffff80002cb40048,ffff80002a0f6bb0,ffff80002a0f6b00) at sys_ioctl+0x67c syscall(ffff80002a0f6bb0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0f6bb0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe3833124b60, count: 7 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff835a9690) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a9690) at __mp_lock+0x192 sys/kern/kern_lock.c:144 vn_ioctl(fffffd80688448e8,80044b02,ffff80002a0f69d0,ffff80002cb40048) at vn_ioctl+0x4d sys/kern/vfs_vnops.c:508 sys_ioctl(ffff80002cb40048,ffff80002a0f6bb0,ffff80002a0f6b00) at sys_ioctl+0x67c syscall(ffff80002a0f6bb0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0f6bb0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe3833124b60, count: -8