panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 446210 55699 0 0 0 1 syz-executor *135851 55699 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830c4c0e) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806ca92e18,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1658 uvm_fault_unwire(fffffd806ca92e18,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1621 kern_sysctl(ffff8000371ea3b4,5,20000100,ffff8000371ea3e8,0,37,9b10dd7106bc12e) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000371ea3b4,5,20000100,ffff8000371ea3e8,0,37,9b10dd7106bc12e) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff80002a05a7b8,ffff8000371ea520,ffff8000371ea470) at sys_sysctl+0x425 syscall(ffff8000371ea520) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371ea520) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfd4bde51280, 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(ffffffff830c4c0e) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806ca92e18,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1658 uvm_fault_unwire(fffffd806ca92e18,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1621 kern_sysctl(ffff8000371ea3b4,5,20000100,ffff8000371ea3e8,0,37,9b10dd7106bc12e) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000371ea3b4,5,20000100,ffff8000371ea3e8,0,37,9b10dd7106bc12e) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff80002a05a7b8,ffff8000371ea520,ffff8000371ea470) at sys_sysctl+0x425 syscall(ffff8000371ea520) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371ea520) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfd4bde51280, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000371ea070 rbx 0xffffffff83414dbf cpu_info_full_primary+0x2dbf rdx 0 rcx 0xffff80002a05a7b8 rax 0xffffffff83413ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8b0c158c014700e2 r11 0x62cb1ede860eb6fa r12 0xffffffff83414bc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff81d0d485 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000371ea060 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=135851 pid=55699 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800037203c10,0xffff80002a05aa50 process=0xffff800029fe8490 user=0xffff8000371e5000, vmspace=0xfffffd806ca92e18 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55699 446210 46484 0 7 0 syz-executor 55699 78007 46484 0 3 0x4000080 fsleep syz-executor *55699 135851 46484 0 7 0x4000000 syz-executor 55699 474427 46484 0 3 0x4000080 fsleep syz-executor 55699 313827 46484 0 2 0x4000000 syz-executor 60983 218898 61380 0 3 0x80 nanoslp syz-executor 60983 88683 61380 0 3 0x4000080 fsleep syz-executor 26185 182889 19166 0 3 0x80 nanoslp syz-executor 26185 94210 19166 0 3 0x4000080 lockf syz-executor 26185 395089 19166 0 3 0x4000080 fsleep syz-executor 35916 164445 60549 0 3 0x80 nanoslp syz-executor 35916 382382 60549 0 3 0x4000080 sbwait syz-executor 35916 229894 60549 0 3 0x4000080 fsleep syz-executor 76562 485033 90327 0 3 0x80 nanoslp syz-executor 76562 505392 90327 0 3 0x4000080 kqpoll syz-executor 76562 366174 90327 0 3 0x4000080 fsleep syz-executor 26074 398361 0 0 3 0x14200 acct acct 61380 369556 40658 0 3 0x82 nanoslp syz-executor 104 63332 40658 0 3 0x82 nanoslp syz-executor 13004 10391 1 0 3 0x100083 ttyin getty 36078 134142 0 0 3 0x14200 bored sosplice 8592 314397 0 0 3 0x14280 nfsidl nfsio 78231 514192 0 0 3 0x14280 nfsidl nfsio 58931 255148 0 0 3 0x14280 nfsidl nfsio 36027 385593 0 0 3 0x14280 nfsidl nfsio 53180 240202 0 0 3 0x14280 nfsidl nfsio 781 146563 0 0 3 0x14280 nfsidl nfsio 47772 516558 0 0 3 0x14280 nfsidl nfsio 35948 263277 0 0 3 0x14280 nfsidl nfsio 47526 490796 0 0 3 0x14280 nfsidl nfsio 99441 44527 0 0 3 0x14280 nfsidl nfsio 38117 22850 0 0 3 0x14280 nfsidl nfsio 99122 515603 0 0 3 0x14280 nfsidl nfsio 93472 72257 0 0 3 0x14280 nfsidl nfsio 55498 201596 0 0 3 0x14280 nfsidl nfsio 79764 91493 0 0 3 0x14280 nfsidl nfsio 88719 118446 0 0 3 0x14280 nfsidl nfsio 58381 413991 0 0 3 0x14280 nfsidl nfsio 30941 184062 0 0 3 0x14280 nfsidl nfsio 85749 338753 0 0 3 0x14280 nfsidl nfsio 47248 260354 0 0 3 0x14280 nfsidl nfsio 35054 257943 40658 0 3 0x82 nanoslp syz-executor 46484 172151 40658 0 3 0x82 nanoslp syz-executor 68296 373486 40658 0 3 0x82 wait syz-executor 19166 207301 40658 0 3 0x82 nanoslp syz-executor 90327 38446 40658 0 3 0x82 nanoslp syz-executor 60549 137461 40658 0 3 0x82 nanoslp syz-executor 40658 375841 83300 0 3 0x82 kqread syz-executor 83300 31425 90558 0 3 0x10008a sigsusp ksh 90558 453374 51764 0 3 0x98 kqread sshd-session 51764 369341 67938 0 3 0x92 kqread sshd-session 67938 363292 1 0 3 0x88 kqread sshd 16711 469600 21550 74 3 0x1100092 bpf pflogd 21550 98036 1 0 3 0x80 sbwait pflogd 19684 368981 95811 73 3 0x1100090 kqread syslogd 95811 98858 1 0 3 0x100082 sbwait syslogd 61456 305985 1 0 3 0x100080 kqread resolvd 6596 202010 1200 77 3 0x100092 kqread dhcpleased 46194 374753 1200 77 3 0x100092 kqread dhcpleased 1200 309334 1 0 3 0x80 kqread dhcpleased 26518 408274 0 0 3 0x14200 bored smr 36889 130341 0 0 2 0x14200 zerothread 44644 253126 0 0 3 0x14200 aiodoned aiodoned 11163 188499 0 0 3 0x14200 syncer update 77132 244099 0 0 3 0x14200 cleaner cleaner 22365 521313 0 0 3 0x14200 reaper reaper 82336 349916 0 0 3 0x14200 pgdaemon pagedaemon 46004 443089 0 0 3 0x14200 bored viomb 47667 399955 0 0 3 0x40014200 acpi0 acpi0 64768 276939 0 0 3 0x40014200 idle1 64008 291048 0 0 3 0x14200 bored softnet3 22435 341374 0 0 3 0x14200 bored softnet2 96986 445788 0 0 3 0x14200 bored softnet1 27746 231659 0 0 3 0x14200 bored softnet0 63689 10428 0 0 3 0x14200 bored systqmp 59007 225521 0 0 3 0x14200 bored systq 15133 153136 0 0 3 0x14200 tmoslp softclockmp 93218 410092 0 0 3 0x40014200 tmoslp softclock 35433 483429 0 0 3 0x40014200 idle0 1 223832 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 55699 (syz-executor) thread 0xffff80002a05a7b8 (135851) shared rwlock vmmaplk r = 0 (0xfffffd806ca92f10) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1620 #2 kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] #2 kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 #3 sys_sysctl+0x425 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835a85b8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 yield+0x6a sys/kern/sched_bsd.c:320 #4 pool_get+0x242 sys/kern/subr_pool.c:589 #5 _rw_obj_alloc_flags+0x4d sys/kern/kern_rwlock.c:556 #6 amap_alloc+0xd4 #7 amap_copy+0x812 sys/uvm/uvm_amap.c:585 #8 uvm_fault_check+0x8d0 uvmfault_amapcopy sys/uvm/uvm_fault.c:250 [inline] #8 uvm_fault_check+0x8d0 sys/uvm/uvm_fault.c:708 #9 uvm_fault+0xf5 sys/uvm/uvm_fault.c:596 #10 uvm_fault_wire+0x73 sys/uvm/uvm_fault.c:1600 #11 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:191 #12 kern_sysctl+0x1ad sys/kern/kern_sysctl.c:504 #13 sys_sysctl+0x425 #14 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #14 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #15 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff834a3220) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:181 #3 kern_sysctl+0x1ad sys/kern/kern_sysctl.c:504 #4 sys_sysctl+0x425 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 35916 (syz-executor) thread 0xffff800037203700 (382382) exclusive rwlock sbufrcv r = 0 (0xffff8000013475b8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sblock+0xb7 sys/kern/uipc_socket2.c:549 #3 soreceive+0x295 sys/kern/uipc_socket.c:945 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1079 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:970 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 11134K 11716K 166960K 12471 0 pcb 17 16K 18K 166960K 173 0 rtable 183 6K 7K 166960K 498 0 pf 32 17K 19K 166960K 82 0 ifaddr 35 5K 7K 166960K 72 0 ifgroup 51 2K 2K 166960K 95 0 sysctl 2 1K 2K 166960K 3 0 counters 62 36K 36K 166960K 92 0 ioctlops 0 0K 4K 166960K 1535 0 iov 1 4K 20K 166960K 116 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1420 89K 90K 166960K 2117 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 68 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 81K 166960K 918 0 sigio 0 0K 0K 166960K 79 0 proc 72 91K 128K 166960K 684 0 subproc 104 6K 6K 166960K 130 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 309 0 in_multi 71 5K 7K 166960K 177 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 589 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 254 73K 78K 166960K 10234 0 UVM aobj 26 4K 4K 166960K 28 0 pinsyscall 43 86K 98K 166960K 2078 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 54 0 NDP 13 0K 2K 166960K 49 0 temp 77 6828K 6896K 166960K 29037 0 kqueue 13 20K 29K 166960K 158 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 74 0 70 1 0 1 1 0 8 0 rtentry 112 152 0 72 5 1 4 4 0 8 0 unpcb 144 732 0 710 7 6 1 6 0 8 0 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 808 289 0 284 10 9 1 7 0 8 0 arp 120 23 0 6 1 0 1 1 0 8 0 inpcb 336 1240 0 1228 27 25 2 12 0 8 1 nd6 136 35 0 18 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1168 9 0 9 2 2 0 1 0 8 0 pffrag 232 9 0 1 1 0 1 1 0 482 0 pffrnode 88 9 0 1 1 0 1 1 0 8 0 pffrent 40 56 0 48 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 pfstitem 24 84 0 27 1 0 1 1 0 8 0 pfstkey 128 84 0 27 2 0 2 2 0 8 0 pfstate 376 84 0 27 7 0 7 7 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 665 0 334 30 9 21 29 0 8 0 art_table 32 668 0 334 4 0 4 4 0 8 0 art_node 16 149 0 76 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 3 1 0 1 1 0 8 0 semapl 112 66 0 56 1 0 1 1 0 8 0 shmpl 112 25 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3000 0 1500 95 0 95 95 0 8 0 ffsino 272 3000 0 1500 102 1 101 102 0 8 0 nchpl 144 4328 0 2637 63 0 63 63 0 8 0 uvmvnodes 80 3589 0 0 74 0 74 74 0 8 0 vnodes 216 3589 0 0 200 0 200 200 0 8 0 namei 1024 14847 0 14847 3 2 1 1 0 8 1 percpumem 16 60 0 15 1 0 1 1 0 8 0 kstatmem 264 52 0 30 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 12290 0 12290 10 9 1 8 1 8 1 plimitpl 152 318 0 297 1 0 1 1 0 8 0 sigapl 424 1246 0 1174 9 0 9 9 0 8 0 futexpl 64 11791 0 11785 1 0 1 1 0 8 0 knotepl 120 347 0 0 11 0 11 11 0 8 0 kqueuepl 216 236 0 226 1 0 1 1 0 8 0 pipepl 320 283 0 256 8 5 3 8 0 8 0 fdescpl 496 1205 0 1173 5 0 5 5 0 8 0 filepl 152 7871 0 7604 22 11 11 16 0 8 0 lockfpl 104 462 0 457 2 1 1 2 0 8 0 lockfspl 48 144 0 141 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 43 0 26 1 0 1 1 0 8 0 ucredpl 104 1162 0 1148 1 0 1 1 0 8 0 zombiepl 144 1203 0 1200 1 0 1 1 0 8 0 processpl 1160 1246 0 1174 6 0 6 6 0 8 0 procpl 648 2529 0 2446 8 0 8 8 0 8 0 srpgc 96 4 0 4 2 2 0 1 0 8 0 sosppl 168 3 0 3 1 1 0 1 0 8 0 sockpl 664 2064 0 2027 30 26 4 15 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 124 0 0 16 0 16 16 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 88 0 0 3 0 3 3 0 8 0 mbufpl 256 389 0 0 25 0 25 25 0 8 0 bufpl 280 3651 0 102 254 0 254 254 0 8 0 anonpl 24 215657 0 212074 63 33 30 47 0 185 0 amapchunkpl 152 32898 0 32349 29 6 23 29 0 158 0 amappl16 200 5470 0 5441 37 34 3 15 0 8 0 amappl15 192 27 0 27 1 1 0 1 0 8 0 amappl14 184 124 0 111 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 1914 0 1882 3 1 2 2 0 8 0 amappl11 160 65 0 51 1 0 1 1 0 8 0 amappl10 152 25 0 25 2 2 0 1 0 8 0 amappl9 144 188 0 188 1 1 0 1 0 8 0 amappl8 136 19 0 16 1 0 1 1 0 8 0 amappl7 128 120 0 107 1 0 1 1 0 8 0 amappl6 120 194 0 193 1 0 1 1 0 8 0 amappl5 112 145 0 133 1 0 1 1 0 8 0 amappl4 104 330 0 310 1 0 1 1 0 8 0 amappl3 96 6082 0 5975 3 0 3 3 0 8 0 amappl2 88 1481 0 1395 3 0 3 3 0 8 0 amappl1 80 10350 0 9786 15 1 14 14 0 8 0 amappl 88 9712 0 9522 5 0 5 5 0 92 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 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 128 253 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 27 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1205 0 1173 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1205 0 1173 1 0 1 1 0 8 0 vmmpekpl 168 11158 0 11109 3 0 3 3 0 8 0 vmmpepl 168 80122 0 78192 103 13 90 95 0 357 3 vmsppl 448 1204 0 1173 5 1 4 4 0 8 0 rwobjpl 56 28141 0 23577 69 4 65 67 0 8 0 pdppl 4096 2417 0 2346 109 36 73 79 0 8 2 pvpl 32 15011 0 0 121 0 121 121 0 265 0 pmappl 248 1204 0 1173 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 443 0 92 11 0 11 11 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(ffffffff830c4c0e) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806ca92e18,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1658 uvm_fault_unwire(fffffd806ca92e18,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1621 kern_sysctl(ffff8000371ea3b4,5,20000100,ffff8000371ea3e8,0,37,9b10dd7106bc12e) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000371ea3b4,5,20000100,ffff8000371ea3e8,0,37,9b10dd7106bc12e) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff80002a05a7b8,ffff8000371ea520,ffff8000371ea470) at sys_sysctl+0x425 syscall(ffff8000371ea520) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371ea520) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfd4bde51280, 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(ffffffff835a83b0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a83b0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a10ff60) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a10ff60) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c668f9b0850, count: 9 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(ffffffff835a83b0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a83b0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80002a10ff60) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a10ff60) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c668f9b0850, count: -6