uvm_fault(0xfffffd8064f47758, 0x4, 0, 1) -> e kernel: page fault trap, code=0 Stopped at igmp_leavegroup+0x80: movl 0x4(%rax),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND igmp_leavegroup(ffff800000d4cec0) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000d4cec0) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c12940) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f685130) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 rip_detach(fffffd807672c010) at rip_detach+0x6a sys/netinet/raw_ip.c:616 soclose(fffffd807672c010,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd80688d0610,ffff8000260d7500) at soo_close+0x40 fdrop(fffffd80688d0610,ffff8000260d7500) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd80688d0610,ffff8000260d7500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000260d7500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000260d7500,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000260d7500,ffff800021c0c030,ffff800021c0c090) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021c0c100) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021c0c100) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbcc30, count: 1 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(0xfffffd8064f47758, 0x4, 0, 1) -> e ddb{0}> trace igmp_leavegroup(ffff800000d4cec0) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000d4cec0) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c12940) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f685130) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 rip_detach(fffffd807672c010) at rip_detach+0x6a sys/netinet/raw_ip.c:616 soclose(fffffd807672c010,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd80688d0610,ffff8000260d7500) at soo_close+0x40 fdrop(fffffd80688d0610,ffff8000260d7500) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd80688d0610,ffff8000260d7500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000260d7500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000260d7500,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000260d7500,ffff800021c0c030,ffff800021c0c090) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021c0c100) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021c0c100) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbcc30, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800021c0bca0 rbx 0 rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0x5d1ae3e073c4800b r11 0xa70127d4f945bcb6 r12 0 r13 0x3 r14 0xffff800000689000 r15 0xffff800000d4cec0 rip 0xffffffff81fcd8b0 igmp_leavegroup+0x80 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021c0bc70 ss 0x10 igmp_leavegroup+0x80: movl 0x4(%rax),%r12d ddb{0}> show proc PROC (syz-executor.3) pid=275061 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff5a40,0xffff8000260cc2b0 process=0xffff80002468e9a8 user=0xffff800021c07000, vmspace=0xfffffd8064f47758 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92402 473166 13486 0 2 0 syz-executor.1 92402 74231 13486 0 3 0x4000080 fsleep syz-executor.1 51524 451413 91643 0 2 0 syz-executor.0 51524 223661 91643 0 3 0x4000080 fsleep syz-executor.0 51524 452961 91643 0 3 0x4000080 fsleep syz-executor.0 51524 84822 91643 0 3 0x4000080 fsleep syz-executor.0 2553 404751 61773 0 2 0 syz-executor.2 2553 502190 61773 0 3 0x4000080 fsleep syz-executor.2 2553 228167 61773 0 2 0x4000000 syz-executor.2 2553 66496 61773 0 2 0x4000000 syz-executor.2 2553 420095 61773 0 2 0x4000000 syz-executor.2 71560 425327 90388 0 3 0x80 nanoslp syz-executor.4 71560 14659 90388 0 3 0x4000080 fsleep syz-executor.4 13486 278498 4477 0 3 0x82 nanoslp syz-executor.1 91643 474090 4477 0 3 0x82 nanoslp syz-executor.0 39226 158432 4477 0 2 0x2 syz-executor.7 63149 10893 0 0 3 0x14200 acct acct 70392 482240 4477 0 3 0x82 nanoslp syz-executor.6 53653 500764 0 0 3 0x14280 nfsidl nfsio 91044 252933 0 0 3 0x14280 nfsidl nfsio 39480 457688 0 0 3 0x14280 nfsidl nfsio 95220 292881 0 0 3 0x14280 nfsidl nfsio 85799 453851 0 0 3 0x14280 nfsidl nfsio 6549 263792 0 0 3 0x14280 nfsidl nfsio 15155 445087 0 0 3 0x14280 nfsidl nfsio 70652 336615 0 0 3 0x14280 nfsidl nfsio 85443 331439 0 0 3 0x14280 nfsidl nfsio 55155 377473 0 0 3 0x14280 nfsidl nfsio 30013 227274 0 0 3 0x14280 nfsidl nfsio 17148 317408 0 0 3 0x14280 nfsidl nfsio 28969 348601 0 0 3 0x14280 nfsidl nfsio 42203 388582 0 0 3 0x14280 nfsidl nfsio 91533 242673 0 0 3 0x14280 nfsidl nfsio 54212 400628 0 0 3 0x14280 nfsidl nfsio 42072 470766 0 0 3 0x14280 nfsidl nfsio 57549 67257 0 0 3 0x14280 nfsidl nfsio 81410 249945 0 0 3 0x14280 nfsidl nfsio 29801 314569 0 0 3 0x14280 nfsidl nfsio 64569 268276 0 0 3 0x14200 bored sosplice 4951 168715 4477 0 3 0x82 piperd syz-executor.5 90388 288982 4477 0 2 0x482 syz-executor.4 92882 59958 4477 0 3 0x82 nanoslp syz-executor.3 61773 254305 4477 0 3 0x82 nanoslp syz-executor.2 4477 27698 38887 0 3 0x82 thrsleep syz-fuzzer 4477 88910 38887 0 3 0x4000082 nanoslp syz-fuzzer 4477 257667 38887 0 3 0x4000082 thrsleep syz-fuzzer 4477 39658 38887 0 3 0x4000082 nanoslp syz-fuzzer 4477 117939 38887 0 3 0x4000082 thrsleep syz-fuzzer 4477 513008 38887 0 3 0x4000082 kqread syz-fuzzer 4477 218228 38887 0 3 0x4000082 thrsleep syz-fuzzer 4477 117615 38887 0 3 0x4000082 thrsleep syz-fuzzer 4477 171578 38887 0 3 0x4000082 thrsleep syz-fuzzer 38887 429101 19479 0 3 0x10008a sigsusp ksh 19479 150609 45300 0 3 0x9a kqread sshd 21033 427415 1 0 3 0x100083 ttyopn getty 45300 467504 1 0 3 0x88 kqread sshd 71582 426666 54585 74 3 0x1100092 bpf pflogd 54585 81173 1 0 3 0x80 netio pflogd 71523 131083 82434 73 3 0x1100090 kqread syslogd 82434 460311 1 0 3 0x100082 netio syslogd 24841 196783 1 0 3 0x100080 kqread resolvd 15340 459896 58765 77 3 0x100092 kqread dhcpleased 2164 200123 58765 77 3 0x100092 kqread dhcpleased 58765 500349 1 0 3 0x80 kqread dhcpleased 53636 318849 0 0 3 0x14200 bored smr 83098 488243 0 0 2 0x14200 zerothread 29016 399413 0 0 3 0x14200 aiodoned aiodoned 8092 183702 0 0 3 0x14200 syncer update 89979 190575 0 0 3 0x14200 cleaner cleaner 34993 265553 0 0 3 0x14200 reaper reaper 8579 35324 0 0 3 0x14200 pgdaemon pagedaemon 75623 63928 0 0 3 0x14200 bored viomb 36019 35949 0 0 3 0x40014200 acpi0 acpi0 64828 474261 0 0 7 0x40014200 idle1 13843 297001 0 0 3 0x14200 bored softnet 3023 488899 0 0 3 0x14200 bored systqmp 49665 18670 0 0 3 0x14200 bored systq 86211 479726 0 0 2 0x40014200 softclock 5756 133993 0 0 3 0x40014200 idle0 1 407494 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 39226 (syz-executor.7) thread 0xffff8000211562a8 (158432) exclusive rrwlock inode r = 0 (0xfffffd8067e2c2c0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3101 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e137098) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3086 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10232 6624K 7325K 78643K 19814 0 pcb 13 14K 16K 78643K 899 0 rtable 205 11K 12K 78643K 815 0 ifaddr 102 20K 20K 78643K 342 0 sysctl 1 1K 1K 78643K 1 0 counters 58 35K 35K 78643K 120 0 ioctlops 0 0K 8K 78643K 2572 0 iov 0 0K 28K 78643K 234 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1374 86K 86K 78643K 3873 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 28 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 326 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 93K 78643K 2955 0 sigio 0 0K 0K 78643K 79 0 proc 71 99K 123K 78643K 834 0 subproc 104 6K 6K 78643K 261 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 143 0 in_multi 88 5K 6K 78643K 305 0 ether_multi 1 0K 0K 78643K 33 0 mrt 1 0K 0K 78643K 11 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 235 1049K 1049K 78643K 235 0 exec 0 0K 2K 78643K 1075 0 pfkey data 0 0K 0K 78643K 3 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 406 388K 397K 78643K 39242 0 UVM aobj 131 7K 7K 78643K 142 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 96 0 NDP 15 0K 2K 78643K 85 0 temp 163 4753K 4831K 78643K 48398 0 kqueue 12 18K 26K 78643K 172 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 196 0 193 3 2 1 3 0 8 0 rtentry 112 222 0 142 4 0 4 4 0 8 0 unpcb 136 2096 0 2079 21 20 1 6 0 8 0 syncache 296 17 0 17 5 5 0 1 0 8 0 tcpcb 736 885 0 880 32 31 1 11 0 8 0 arp 120 33 0 19 1 0 1 1 0 8 0 inpcb 304 3284 0 3274 37 36 1 11 0 8 0 rttmr 72 3 0 3 1 1 0 1 0 8 0 ip6q 72 4 0 4 1 1 0 1 0 8 0 ip6af 40 8 0 8 1 1 0 1 0 8 0 nd6 48 56 0 37 1 0 1 1 0 8 0 pkpcb 40 14 0 14 3 3 0 1 0 8 0 kcovpl 48 15 0 7 1 0 1 1 0 8 0 ppxss 1248 11 0 10 4 3 1 1 0 8 0 pfstscr 40 136 0 136 2 2 0 1 0 8 0 pffrag 232 12 0 10 3 2 1 1 0 482 0 pffrnode 88 12 0 10 3 2 1 1 0 8 0 pffrent 40 31 0 29 3 2 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 56 0 48 2 1 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 264 6 0 6 2 2 0 1 0 8 0 pfstitem 24 34 0 32 1 0 1 1 0 8 0 pfstkey 112 170 0 168 1 0 1 1 0 8 0 pfstate 320 104 0 102 3 2 1 3 0 8 0 pfrule 1360 75 0 63 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 944 0 569 39 14 25 32 0 8 0 art_table 32 945 0 569 5 1 4 5 0 8 0 art_node 16 217 0 146 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 321 0 311 1 0 1 1 0 8 0 shmpl 112 139 0 11 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5212 0 3755 92 0 92 92 0 8 0 ffsino 272 5212 0 3755 98 0 98 98 0 8 0 nchpl 144 9232 0 7606 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 34615 0 34614 2 1 1 2 0 8 0 percpumem 16 72 0 31 1 0 1 1 0 8 0 vcpupl 2048 22 0 0 3 0 3 3 0 8 0 vmpool 560 31 0 9 3 1 2 2 0 8 0 pfiaddrpl 120 23 0 14 2 1 1 1 0 8 0 scxspl 216 25417 0 25417 11 10 1 8 0 8 1 plimitpl 152 477 0 462 1 0 1 1 0 8 0 sigapl 424 3267 0 3202 8 0 8 8 0 8 0 futexpl 64 26682 0 26676 1 0 1 1 0 8 0 knotepl 120 341 0 0 10 0 10 10 0 8 0 kqueuepl 216 519 0 511 9 8 1 5 0 8 0 pipepl 336 1010 0 982 25 22 3 12 0 8 0 fdescpl 496 3231 0 3203 5 1 4 5 0 8 0 filepl 152 23670 0 23425 48 36 12 21 0 8 2 lockfpl 104 3408 0 3406 8 7 1 3 0 8 0 lockfspl 48 1504 0 1502 2 1 1 2 0 8 0 sessionpl 144 31 0 14 1 0 1 1 0 8 0 pgrppl 48 82 0 65 1 0 1 1 0 8 0 ucredpl 96 3118 0 3106 1 0 1 1 0 8 0 zombiepl 144 3204 0 3202 1 0 1 1 0 8 0 processpl 1064 3267 0 3202 5 0 5 5 0 8 0 procpl 672 8654 0 8572 14 6 8 9 0 8 0 srpgc 96 12 0 12 3 3 0 1 0 8 0 sosppl 168 24 0 24 6 6 0 1 0 8 0 sockpl 480 5590 0 5560 98 91 7 20 0 8 2 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 13 0 0 2 0 2 2 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 315 0 0 29 0 29 29 0 8 0 mtagpl 96 1226 0 0 30 0 30 30 0 8 0 mbufpl 256 1491 0 0 91 1 90 90 0 8 0 bufpl 288 7569 0 1233 453 0 453 453 0 8 0 anonpl 24 897743 0 878192 180 50 130 144 0 186 3 amapchunkpl 152 122287 0 121385 78 39 39 53 0 158 0 amappl16 200 9419 0 8850 69 38 31 43 0 8 0 amappl15 192 134 0 127 1 0 1 1 0 8 0 amappl14 184 79 0 75 1 0 1 1 0 8 0 amappl13 176 320 0 319 1 0 1 1 0 8 0 amappl12 168 442 0 436 2 1 1 1 0 8 0 amappl11 160 752 0 733 1 0 1 1 0 8 0 amappl10 152 765 0 756 1 0 1 1 0 8 0 amappl9 144 737 0 732 1 0 1 1 0 8 0 amappl8 136 1188 0 1108 3 0 3 3 0 8 0 amappl7 128 554 0 540 1 0 1 1 0 8 0 amappl6 120 491 0 470 2 1 1 2 0 8 0 amappl5 112 3188 0 3171 1 0 1 1 0 8 0 amappl4 104 2100 0 2066 2 1 1 2 0 8 0 amappl3 96 1089 0 1075 1 0 1 1 0 8 0 amappl2 88 1006 0 962 3 1 2 3 0 8 0 amappl1 80 61916 0 61339 21 8 13 19 0 8 0 amappl 88 38540 0 38251 8 0 8 8 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 72 141 0 11 3 0 3 3 0 8 0 uaddrrnd 24 3262 0 3212 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3262 0 3212 1 0 1 1 0 8 0 vmmpekpl 168 29884 0 29821 3 0 3 3 0 8 0 vmmpepl 168 299115 0 296589 176 55 121 142 0 357 2 vmsppl 368 3261 0 3212 6 1 5 5 0 8 0 rwobjpl 56 80255 0 72587 112 3 109 111 0 8 0 pdppl 4096 6531 0 6446 213 122 91 91 0 8 6 pvpl 32 1578690 0 1554699 318 105 213 246 0 265 12 pmappl 248 3261 0 3212 5 1 4 4 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1102 0 195 27 0 27 27 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace igmp_leavegroup(ffff800000d4cec0) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000d4cec0) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c12940) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f685130) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 rip_detach(fffffd807672c010) at rip_detach+0x6a sys/netinet/raw_ip.c:616 soclose(fffffd807672c010,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd80688d0610,ffff8000260d7500) at soo_close+0x40 fdrop(fffffd80688d0610,ffff8000260d7500) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd80688d0610,ffff8000260d7500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000260d7500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000260d7500,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000260d7500,ffff800021c0c030,ffff800021c0c090) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800021c0c100) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021c0c100) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbcc30, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5