*cpu0: uvm_fault(0xffffffff839301a0, 0xffff8000015ed08a, 0, 1) -> e ddb{0}> trace arp_rtrequest(ffff800000039058,1,fffffd806bd96430) at arp_rtrequest+0x66f arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bd96430) at arp_rtrequest+0x66f sys/netinet/if_ether.c:184 rtrequest(1,ffff80002a37bf40,0,ffff80002a37bec0,0) at rtrequest+0xc5c sys/net/route.c:1117 rtm_output(ffff80000151c700,ffff80002a37bfe8,ffff80002a37bf40,0,0) at rtm_output+0x876 sys/net/rtsock.c:973 route_output(fffffd806030e500,ffff80000145f120) at route_output+0x9a1 sys/net/rtsock.c:878 route_send(ffff80000145f120,fffffd806030e500,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff80000145f120,0,ffff80002a37c188,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000ffff02b8,4,ffff80002a37c280,808,ffff80002a37c330) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff8000ffff02b8,ffff80002a37c3e0,ffff80002a37c330) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80002a37c3e0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a37c3e0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x310044262c0, count: -10 ddb{0}> show registers rdi 0xffff80002bfcd000 rsi 0x8f1 rbp 0xffff80002a37bd90 rbx 0xde rdx 0xffff80002bfcd000 rcx 0x100040600080100 rax 0xfffffd8062155de0 r8 0x10 r9 0xfffffd806bd96430 r10 0x50d77fe86bb10ef0 r11 0x15899f9f90be5a0a r12 0x52 r13 0xfffffd8062155d00 r14 0xfffffd806bd96430 r15 0xffff8000015ecfa0 rip 0xffffffff8164f37f arp_rtrequest+0x66f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a37bd10 ss 0x10 arp_rtrequest+0x66f: movzwl 0xc(%r15,%rbx,1),%ecx ddb{0}> show proc PROC (syz-executor) tid=282131 pid=33314 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff0548,0xffffffff839a8b30 process=0xffff80003b813358 user=0xffff80002a377000, vmspace=0xfffffd806bc73200 estcpu=36, cpticks=14, pctcpu=0.0, user=0, sys=13, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 33314 509715 19025 0 3 0x80 fsleep syz-executor *33314 282131 19025 0 7 0x4000000 syz-executor 37560 99846 62727 0 3 0x80 fsleep syz-executor 37560 199330 62727 0 3 0x4000080 bpf syz-executor 84130 424469 6170 0 3 0x80 fsleep syz-executor 84130 57868 6170 0 3 0x4000080 kqread syz-executor 51602 272816 68539 0 3 0x80 fsleep syz-executor 51602 27015 68539 0 3 0x4000080 ttyout syz-executor 5329 261406 64081 0 3 0x80 fsleep syz-executor 5329 305133 64081 0 3 0x4000080 fifor syz-executor 4273 126330 63108 0 3 0x80 fsleep syz-executor 4273 301605 63108 0 3 0x4000080 kqread syz-executor 13335 22205 52781 0 3 0x80 fsleep syz-executor 13335 254250 52781 0 3 0x4000080 ttyin syz-executor 94500 318891 1 0 3 0x100083 ttyin getty 64081 58478 52934 0 2 0x482 syz-executor 62727 266216 52934 0 2 0x482 syz-executor 25752 219983 0 0 3 0x14280 nfsidl nfsio 27763 218440 0 0 3 0x14280 nfsidl nfsio 95275 415405 0 0 3 0x14280 nfsidl nfsio 89686 212676 0 0 3 0x14280 nfsidl nfsio 82273 68284 0 0 3 0x14280 nfsidl nfsio 6370 443398 0 0 3 0x14280 nfsidl nfsio 40373 380190 0 0 3 0x14280 nfsidl nfsio 69766 522635 0 0 3 0x14280 nfsidl nfsio 95062 129517 0 0 3 0x14280 nfsidl nfsio 49258 117509 0 0 3 0x14280 nfsidl nfsio 15298 314635 0 0 3 0x14280 nfsidl nfsio 34811 62239 0 0 3 0x14280 nfsidl nfsio 74133 188879 0 0 3 0x14280 nfsidl nfsio 61166 327204 0 0 3 0x14280 nfsidl nfsio 9447 49546 0 0 3 0x14280 nfsidl nfsio 95528 494192 0 0 3 0x14280 nfsidl nfsio 7476 523655 0 0 3 0x14280 nfsidl nfsio 26759 341494 0 0 3 0x14280 nfsidl nfsio 94794 312758 0 0 3 0x14280 nfsidl nfsio 69900 169392 0 0 3 0x14280 nfsidl nfsio 54274 95683 52934 0 2 0x2 syz-executor 88514 138718 0 0 3 0x14200 bored sosplice 19025 394039 52934 0 2 0x482 syz-executor 52781 48079 52934 0 2 0x482 syz-executor 63108 226113 52934 0 2 0x482 syz-executor 68539 311968 52934 0 2 0x482 syz-executor 6170 6095 52934 0 2 0x482 syz-executor 52934 476353 23129 0 3 0x82 kqread syz-executor 23129 55843 76326 0 3 0x10008a sigsusp ksh 76326 385200 58667 0 3 0x98 kqread sshd-session 58667 447441 42587 0 3 0x92 kqread sshd-session 42587 11765 1 0 3 0x88 kqread sshd 26832 454046 75352 74 3 0x1100092 bpf pflogd 75352 292003 1 0 3 0x80 sbwait pflogd 33759 178813 92485 73 3 0x1100090 kqread syslogd 92485 387960 1 0 3 0x100082 sbwait syslogd 28927 202144 1 0 3 0x100080 kqread resolvd 31593 180881 15359 77 3 0x100092 kqread dhcpleased 55415 439245 15359 77 3 0x100092 kqread dhcpleased 15359 287954 1 0 3 0x80 kqread dhcpleased 60309 384527 0 0 3 0x14200 bored smr 49701 129104 0 0 3 0x14200 pgzero zerothread 9187 400529 0 0 3 0x14200 aiodoned aiodoned 89125 353145 0 0 3 0x14200 syncer update 96266 129673 0 0 3 0x14200 cleaner cleaner 10270 89824 0 0 3 0x14200 reaper reaper 1274 103713 0 0 3 0x14200 pgdaemon pagedaemon 97151 256831 0 0 3 0x14200 bored viomb 26024 54698 0 0 3 0x40014200 acpi0 acpi0 93720 254234 0 0 7 0x40014200 idle1 83449 476970 0 0 3 0x14200 bored softnet3 720 38964 0 0 3 0x14200 bored softnet2 30561 212918 0 0 3 0x14200 bored softnet1 67461 365406 0 0 3 0x14200 bored softnet0 20525 307260 0 0 2 0x14200 systqmp 55214 507863 0 0 3 0x14200 bored systq 12633 174941 0 0 2 0x14200 softclockmp 84236 124114 0 0 2 0x40014200 softclock 56024 284482 0 0 3 0x40014200 idle0 1 360733 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 33314 (syz-executor) thread 0xffff8000ffff02b8 (282131) exclusive rwlock netlock r = 0 (0xffffffff8380bc80) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rtm_output+0x78c sys/net/rtsock.c:969 #3 route_output+0x9a1 sys/net/rtsock.c:878 #4 route_send+0xd7 sys/net/rtsock.c:342 #5 sosend+0x804 sys/kern/uipc_socket.c:-1 #6 sendit+0x721 sys/kern/uipc_syscalls.c:779 #7 sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff80000145f2f8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sblock+0xb7 sys/kern/uipc_socket2.c:536 #3 sosend+0x2e2 sys/kern/uipc_socket.c:630 #4 sendit+0x721 sys/kern/uipc_syscalls.c:779 #5 sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 54274 (syz-executor) thread 0xffff8000ffff1218 (95683) exclusive rrwlock inode r = 0 (0xfffffd806df18548) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #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:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bcdcd00) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 11039K 11483K 166960K 13495 0 pcb 18 13K 14K 166960K 203 0 rtable 251 10K 10K 166960K 584 0 pf 42 19K 23K 166960K 170 0 ifaddr 46 8K 8K 166960K 105 0 ifgroup 61 2K 2K 166960K 185 0 sysctl 4 1K 2K 166960K 8 0 counters 68 36K 37K 166960K 170 0 ioctlops 0 0K 4K 166960K 1660 0 iov 0 0K 36K 166960K 146 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1460 92K 92K 166960K 2947 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 70 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 1240 0 sigio 0 0K 0K 166960K 25 0 proc 72 91K 152K 166960K 748 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 168 0 in_multi 102 7K 7K 166960K 172 0 ether_multi 1 0K 0K 166960K 4 0 mrt 2 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 601 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 227 160K 177K 166960K 12385 0 UVM aobj 24 2K 2K 166960K 26 0 pinsyscall 42 84K 108K 166960K 2464 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 41 0 NDP 14 0K 2K 166960K 71 0 temp 65 8689K 8938K 166960K 41437 0 kqueue 13 20K 34K 166960K 221 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 157 0 153 2 1 1 2 0 8 0 rtentry 176 175 0 64 6 0 6 6 0 8 0 unpcb 144 1358 0 1334 10 8 2 6 0 8 1 syncache 336 7 0 7 3 2 1 1 0 8 1 tcpqe 32 4 0 4 2 2 0 1 0 8 0 tcpcb 808 240 0 232 3 1 2 2 0 8 0 arp 128 30 0 9 1 0 1 1 0 8 0 inpcb 384 1330 0 1317 17 8 9 9 0 8 7 nd6 144 39 0 10 2 0 2 2 0 8 0 pkpcb 40 16 0 16 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1192 32 0 31 2 1 1 1 0 8 0 pppxif 1504 8 0 8 2 2 0 1 0 8 0 pfstscr 40 2 0 2 2 2 0 1 0 8 0 pffrag 232 5 0 2 1 0 1 1 0 482 0 pffrnode 88 5 0 2 1 0 1 1 0 8 0 pffrent 40 107 0 104 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 2 0 2 1 1 0 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 79 0 39 1 0 1 1 0 8 0 pfstkey 128 81 0 41 2 0 2 2 0 8 0 pfstate 384 77 0 38 6 0 6 6 0 8 0 pfrule 1344 30 0 23 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 676 0 212 33 3 30 30 0 8 0 art_table 32 679 0 212 4 0 4 4 0 8 0 art_node 16 170 0 72 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 12 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 68 0 58 1 0 1 1 0 8 0 shmpl 112 23 0 2 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3698 0 2185 96 0 96 96 0 8 0 ffsino 288 3698 0 2185 109 0 109 109 0 8 0 nchpl 144 5466 0 3766 64 0 64 64 0 8 0 rtmask 32 4 0 4 2 2 0 1 0 8 0 uvmvnodes 80 4866 0 0 100 0 100 100 0 8 0 vnodes 216 4866 0 0 271 0 271 271 0 8 0 namei 1024 20066 0 20065 2 1 1 2 0 8 0 percpumem 16 100 0 51 1 0 1 1 0 8 0 kstatmem 264 98 0 70 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 18573 0 18573 11 9 2 8 1 8 2 plimitpl 152 424 0 407 1 0 1 1 0 8 0 sigapl 424 1572 0 1502 10 1 9 9 0 8 0 futexpl 64 16632 0 16625 1 0 1 1 0 8 0 knotepl 120 594 0 0 18 0 18 18 0 8 0 kqueuepl 224 443 0 430 6 5 1 5 0 8 0 pipepl 336 296 0 268 10 7 3 8 0 8 0 fdescpl 520 1532 0 1501 3 0 3 3 0 8 0 filepl 160 10964 0 10736 20 7 13 18 0 8 1 lockfpl 104 537 0 535 3 2 1 2 0 8 0 lockfspl 48 215 0 213 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 58 0 41 1 0 1 1 0 8 0 ucredpl 104 1677 0 1663 1 0 1 1 0 8 0 zombiepl 144 1502 0 1502 1 0 1 1 0 8 1 processpl 1192 1572 0 1502 6 0 6 6 0 8 0 procpl 656 3212 0 3135 9 1 8 8 0 8 0 srpgc 96 7 0 7 2 2 0 1 0 8 0 sosppl 168 11 0 11 2 2 0 1 0 8 0 sockpl 728 2872 0 2832 25 14 11 16 0 8 5 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 43 0 0 2 0 2 2 0 8 0 mbufpl 256 291 0 0 19 0 19 19 0 8 0 bufpl 280 5888 0 140 411 0 411 411 0 8 0 anonpl 32 8710 0 0 71 0 71 71 0 246 0 amapchunkpl 152 41093 0 40631 29 8 21 27 0 158 1 amappl16 200 3725 0 3686 28 24 4 15 0 8 0 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 153 0 141 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 2247 0 2216 4 1 3 3 0 8 0 amappl11 160 71 0 57 1 0 1 1 0 8 0 amappl10 152 31 0 31 1 1 0 1 0 8 0 amappl9 144 323 0 323 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 128 0 116 1 0 1 1 0 8 0 amappl6 120 221 0 218 1 0 1 1 0 8 0 amappl5 112 137 0 126 1 0 1 1 0 8 0 amappl4 104 344 0 325 1 0 1 1 0 8 0 amappl3 96 8425 0 8316 5 1 4 4 0 8 0 amappl2 88 728 0 666 2 0 2 2 0 8 0 amappl1 80 14034 0 13435 17 2 15 16 0 8 1 amappl 88 11394 0 11240 5 0 5 5 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 128 254 0 254 2 2 0 1 0 8 0 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 25 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1532 0 1501 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1532 0 1501 1 0 1 1 0 8 0 vmmpekpl 168 13579 0 13528 3 0 3 3 0 8 0 vmmpepl 168 100284 0 98311 107 11 96 99 0 357 5 vmsppl 480 1531 0 1501 5 0 5 5 0 8 0 rwobjpl 72 31163 0 25344 106 0 106 106 0 8 0 pdppl 4096 3072 0 3002 116 42 74 86 0 8 4 pvpl 32 17698 0 0 143 0 143 143 0 265 0 pmappl 256 1531 0 1501 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 424 0 58 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace arp_rtrequest(ffff800000039058,1,fffffd806bd96430) at arp_rtrequest+0x66f arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bd96430) at arp_rtrequest+0x66f sys/netinet/if_ether.c:184 rtrequest(1,ffff80002a37bf40,0,ffff80002a37bec0,0) at rtrequest+0xc5c sys/net/route.c:1117 rtm_output(ffff80000151c700,ffff80002a37bfe8,ffff80002a37bf40,0,0) at rtm_output+0x876 sys/net/rtsock.c:973 route_output(fffffd806030e500,ffff80000145f120) at route_output+0x9a1 sys/net/rtsock.c:878 route_send(ffff80000145f120,fffffd806030e500,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff80000145f120,0,ffff80002a37c188,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000ffff02b8,4,ffff80002a37c280,808,ffff80002a37c330) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff8000ffff02b8,ffff80002a37c3e0,ffff80002a37c330) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80002a37c3e0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a37c3e0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x310044262c0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) at x86_ipi_db+0x27 x86_ipi_handler() a x86_ipi_handler+0xd9 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5