uvm_fault(0xfffffd807abf1d20, 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 154797 12141 0 0x14000 0x200 1 reaper igmp_leavegroup(ffff800000c25b80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c25b80) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff8000006c68e0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806966d988) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 rip_detach(fffffd80682d4200) at rip_detach+0x6a sys/netinet/raw_ip.c:616 soclose(fffffd80682d4200,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd806e51ee50,ffff8000211927e0) at soo_close+0x40 fdrop(fffffd806e51ee50,ffff8000211927e0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806e51ee50,ffff8000211927e0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000211927e0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000211927e0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000211927e0,ffff800022c68360,ffff800022c683c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022c68430) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c68430) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffec690, 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(0xfffffd807abf1d20, 0x4, 0, 1) -> e ddb{0}> trace igmp_leavegroup(ffff800000c25b80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c25b80) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff8000006c68e0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806966d988) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 rip_detach(fffffd80682d4200) at rip_detach+0x6a sys/netinet/raw_ip.c:616 soclose(fffffd80682d4200,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd806e51ee50,ffff8000211927e0) at soo_close+0x40 fdrop(fffffd806e51ee50,ffff8000211927e0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806e51ee50,ffff8000211927e0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000211927e0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000211927e0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000211927e0,ffff800022c68360,ffff800022c683c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022c68430) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c68430) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffec690, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800022c67fd0 rbx 0 rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0x19e7066f9f45e8e0 r11 0x86f9ca22bcdb57c1 r12 0 r13 0x3 r14 0xffff800000689000 r15 0xffff800000c25b80 rip 0xffffffff81562c00 igmp_leavegroup+0x80 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022c67fa0 ss 0x10 igmp_leavegroup+0x80: movl 0x4(%rax),%r12d ddb{0}> show proc PROC (syz-executor.2) pid=2521 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff800021192d20,0xffff800021192010 process=0xffff80002b548020 user=0xffff800022c63000, vmspace=0xfffffd807abf1d20 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 85277 36010 37191 0 2 0 syz-executor.0 85277 146755 37191 0 3 0x4000080 fsleep syz-executor.0 31469 513118 14871 0 2 0x480 syz-executor.3 31469 11714 14871 0 3 0x4000080 fsleep syz-executor.3 31469 96226 14871 0 3 0x4000080 fsleep syz-executor.3 91753 158447 4757 0 2 0 syz-executor.7 91753 222978 4757 0 3 0x4000080 fsleep syz-executor.7 8131 429277 1 0 3 0x100083 ttyin getty 43648 139353 0 0 3 0x14280 nfsidl nfsio 52682 421941 0 0 3 0x14280 nfsidl nfsio 70565 436995 0 0 3 0x14280 nfsidl nfsio 79879 351724 0 0 3 0x14280 nfsidl nfsio 79977 160916 0 0 3 0x14280 nfsidl nfsio 52556 86426 0 0 3 0x14280 nfsidl nfsio 38914 489877 0 0 3 0x14280 nfsidl nfsio 85588 214959 0 0 3 0x14280 nfsidl nfsio 45367 316330 0 0 3 0x14280 nfsidl nfsio 77549 68044 0 0 3 0x14280 nfsidl nfsio 56112 128855 0 0 3 0x14280 nfsidl nfsio 14937 45371 0 0 3 0x14280 nfsidl nfsio 34004 285673 0 0 3 0x14280 nfsidl nfsio 4552 240719 0 0 3 0x14280 nfsidl nfsio 40762 41119 0 0 3 0x14280 nfsidl nfsio 45299 452978 0 0 3 0x14280 nfsidl nfsio 84780 243725 0 0 3 0x14280 nfsidl nfsio 42953 331869 0 0 3 0x14280 nfsidl nfsio 7220 296230 0 0 3 0x14280 nfsidl nfsio 28003 191619 0 0 3 0x14280 nfsidl nfsio 78774 283360 54442 0 3 0x82 nanoslp syz-executor.2 4757 402848 54442 0 2 0x482 syz-executor.7 14871 424942 54442 0 2 0x482 syz-executor.3 78304 153743 54442 0 3 0x82 nanoslp syz-executor.6 59352 434396 0 0 3 0x14200 bored sosplice 38689 385007 54442 0 2 0x2 syz-executor.5 55703 101267 54442 0 2 0x2 syz-executor.4 71753 297437 54442 0 2 0x482 syz-executor.1 37191 18886 54442 0 3 0x82 nanoslp syz-executor.0 54442 80535 673 0 3 0x82 thrsleep syz-fuzzer 54442 159781 673 0 3 0x4000082 nanoslp syz-fuzzer 54442 231855 673 0 3 0x4000082 kqread syz-fuzzer 54442 360709 673 0 3 0x4000082 thrsleep syz-fuzzer 54442 387473 673 0 3 0x4000082 thrsleep syz-fuzzer 54442 357295 673 0 3 0x4000082 nanoslp syz-fuzzer 54442 162789 673 0 3 0x4000082 thrsleep syz-fuzzer 54442 125820 673 0 3 0x4000082 thrsleep syz-fuzzer 54442 455987 673 0 3 0x4000082 thrsleep syz-fuzzer 54442 217202 673 0 3 0x4000082 thrsleep syz-fuzzer 673 479550 89625 0 3 0x10008a sigsusp ksh 89625 139822 56373 0 3 0x9a kqread sshd 56373 363572 1 0 3 0x88 kqread sshd 17281 171255 6014 74 3 0x1100092 bpf pflogd 6014 222649 1 0 3 0x80 netio pflogd 86281 467403 90106 73 3 0x1100090 kqread syslogd 90106 339855 1 0 3 0x100082 netio syslogd 76322 476862 1 0 3 0x100080 kqread resolvd 18375 65065 38817 77 3 0x100092 kqread dhcpleased 15494 158454 38817 77 3 0x100092 kqread dhcpleased 38817 208429 1 0 3 0x80 kqread dhcpleased 95981 281436 0 0 3 0x14200 bored smr 19244 166140 0 0 2 0x14200 zerothread 47831 405620 0 0 3 0x14200 aiodoned aiodoned 90916 484867 0 0 3 0x14200 syncer update 73475 368324 0 0 3 0x14200 cleaner cleaner 12141 154797 0 0 7 0x14200 reaper 15915 388279 0 0 3 0x14200 pgdaemon pagedaemon 69112 107367 0 0 3 0x14200 bored viomb 91143 463849 0 0 3 0x40014200 acpi0 acpi0 7843 490420 0 0 3 0x40014200 idle1 60988 518700 0 0 3 0x14200 bored softnet 57593 464161 0 0 3 0x14200 bored systqmp 63828 189301 0 0 3 0x14200 bored systq 52146 31184 0 0 2 0x40014200 softclock 13037 348789 0 0 3 0x40014200 idle0 1 238215 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex anonpl r = 0 (0xffffffff82aa4dc8) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_put+0x8a sys/kern/subr_pool.c:799 #4 amap_wipeout+0x1b1 sys/uvm/uvm_amap.c:504 #5 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1599 #6 uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 #7 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 #8 reaper+0x18b sys/kern/kern_exit.c:457 #9 proc_trampoline+0x1c Process 55703 (syz-executor.4) thread 0xffff8000ffff2fc8 (101267) exclusive rrwlock inode r = 0 (0xfffffd806c4590a8) #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 (0xfffffd806c459f88) #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 Process 12141 (reaper) thread 0xffff8000210f97a0 (154797) kernel: protection fault trap, code=0 Faulted in DDB; continuing... ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10220 6621K 6947K 78643K 19964 0 pcb 13 14K 16K 78643K 598 0 rtable 209 8K 13K 78643K 2834 0 ifaddr 92 19K 21K 78643K 933 0 sysctl 3 1K 1K 78643K 3 0 counters 56 35K 36K 78643K 138 0 ioctlops 0 0K 6K 78643K 7437 0 iov 0 0K 28K 78643K 383 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1429 89K 89K 78643K 4028 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 50 0 VM map 2 1K 1K 78643K 2 0 sem 24 3K 5K 78643K 146 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 81K 78643K 4872 0 sigio 0 0K 0K 78643K 42 0 proc 71 87K 111K 78643K 877 0 subproc 104 6K 6K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 409 0 in_multi 81 5K 6K 78643K 719 0 ether_multi 1 0K 0K 78643K 58 0 mrt 13 0K 1K 78643K 36 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 2K 78643K 1361 0 pfkey data 0 0K 1K 78643K 4 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 410K 411K 78643K 64380 0 UVM aobj 131 8K 8K 78643K 141 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 315 0 NDP 13 0K 2K 78643K 151 0 temp 161 4757K 4857K 78643K 42381 0 kqueue 12 18K 26K 78643K 336 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 120 327 0 324 5 2 3 3 0 8 2 rtentry 112 480 0 390 4 0 4 4 0 8 0 unpcb 136 2892 0 2877 37 36 1 6 0 8 0 syncache 296 10 0 10 5 5 0 1 0 8 0 tcpcb 736 1202 0 1189 47 44 3 8 0 8 1 arp 120 31 0 15 1 0 1 1 0 8 0 inpcb 304 4033 0 4019 67 65 2 12 0 8 0 rttmr 72 7 0 7 2 2 0 1 0 8 0 nd6 48 119 0 98 1 0 1 1 0 8 0 pkpcb 40 15 0 15 2 2 0 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 ppxss 1248 22 0 22 7 7 0 1 0 8 0 pfstscr 40 6 0 6 2 2 0 1 0 8 0 pffrag 232 16 0 13 4 3 1 1 0 482 0 pffrnode 88 16 0 13 4 3 1 1 0 8 0 pffrent 40 289 0 286 5 4 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 700 0 697 8 7 1 2 0 8 0 pftag 88 20 0 17 2 1 1 1 0 8 0 pfstitem 24 24 0 22 1 0 1 1 0 8 0 pfstkey 112 38 0 36 1 0 1 1 0 8 0 pfstate 320 28 0 26 2 1 1 2 0 8 0 pfrule 1360 373 0 369 7 6 1 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2521 0 2120 36 9 27 29 0 8 0 art_table 32 2522 0 2120 4 0 4 4 0 8 0 art_node 16 479 0 399 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 0 1 0 1 1 0 8 0 semapl 112 140 0 118 1 0 1 1 0 8 0 shmpl 112 138 0 10 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7824 0 6378 91 0 91 91 0 8 0 ffsino 272 7824 0 6378 97 0 97 97 0 8 0 nchpl 144 14504 0 12877 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 56164 0 56163 3 2 1 2 0 8 0 percpumem 16 81 0 41 1 0 1 1 0 8 0 vcpupl 2048 29 0 0 4 0 4 4 0 8 0 vmpool 560 44 0 15 3 0 3 3 0 8 0 pfiaddrpl 120 210 0 207 4 3 1 1 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 44014 0 44014 17 16 1 8 0 8 1 plimitpl 152 1105 0 1090 1 0 1 1 0 8 0 sigapl 424 5214 0 5150 10 2 8 8 0 8 0 futexpl 64 42367 0 42363 4 3 1 1 0 8 0 knotepl 120 181 0 0 5 0 5 5 0 8 0 kqueuepl 216 1401 0 1393 32 27 5 8 0 8 4 pipepl 336 1033 0 1005 31 23 8 8 0 8 5 fdescpl 496 5159 0 5132 6 2 4 5 0 8 0 filepl 152 38106 0 37862 54 37 17 20 0 8 6 lockfpl 104 1355 0 1352 4 3 1 2 0 8 0 lockfspl 48 442 0 439 1 0 1 1 0 8 0 sessionpl 144 32 0 15 1 0 1 1 0 8 0 pgrppl 48 107 0 90 1 0 1 1 0 8 0 ucredpl 96 4145 0 4133 1 0 1 1 0 8 0 zombiepl 144 5153 0 5150 1 0 1 1 0 8 0 processpl 1064 5214 0 5150 6 1 5 5 0 8 0 procpl 672 14591 0 14510 20 11 9 9 0 8 1 srpgc 96 8 0 8 3 3 0 1 0 8 0 sosppl 168 31 0 31 7 6 1 1 0 8 1 sockpl 480 7312 0 7280 135 122 13 21 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 21 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 4 1 3 3 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 334 0 0 25 1 24 24 0 8 0 mtagpl 96 483 0 0 9 0 9 9 0 8 0 mbufpl 256 1139 0 0 56 0 56 56 0 8 0 bufpl 288 11194 0 4858 453 0 453 453 0 8 0 anonpl 24 1429589 0 1409394 173 36 137 158 0 186 0 amapchunkpl 152 158062 0 157195 85 44 41 50 0 158 0 amappl16 200 12015 0 11348 55 14 41 48 0 8 0 amappl15 192 396 0 387 1 0 1 1 0 8 0 amappl14 184 791 0 779 1 0 1 1 0 8 0 amappl13 176 293 0 287 1 0 1 1 0 8 0 amappl12 168 371 0 367 1 0 1 1 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 50 0 41 1 0 1 1 0 8 0 amappl9 144 1914 0 1908 1 0 1 1 0 8 0 amappl8 136 2784 0 2684 4 0 4 4 0 8 0 amappl7 128 2056 0 2037 1 0 1 1 0 8 0 amappl6 120 1655 0 1629 2 1 1 2 0 8 0 amappl5 112 4750 0 4731 1 0 1 1 0 8 0 amappl4 104 1250 0 1219 2 1 1 2 0 8 0 amappl3 96 1003 0 991 1 0 1 1 0 8 0 amappl2 88 1050 0 1001 3 1 2 3 0 8 0 amappl1 80 96685 0 96120 19 6 13 19 0 8 0 amappl 88 63633 0 63361 9 1 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 72 140 0 10 3 0 3 3 0 8 0 uaddrrnd 24 5203 0 5147 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5203 0 5147 1 0 1 1 0 8 0 vmmpekpl 168 43532 0 43476 3 0 3 3 0 8 0 vmmpepl 168 466924 0 464295 230 101 129 156 0 357 5 vmsppl 368 5202 0 5146 7 1 6 6 0 8 0 rwobjpl 56 119601 0 111808 115 4 111 114 0 8 0 pdppl 4096 10413 0 10321 279 181 98 98 0 8 6 pvpl 32 2575415 0 2550836 342 125 217 271 0 265 3 pmappl 248 5202 0 5146 5 1 4 4 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1154 0 270 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace igmp_leavegroup(ffff800000c25b80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c25b80) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff8000006c68e0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806966d988) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 rip_detach(fffffd80682d4200) at rip_detach+0x6a sys/netinet/raw_ip.c:616 soclose(fffffd80682d4200,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd806e51ee50,ffff8000211927e0) at soo_close+0x40 fdrop(fffffd806e51ee50,ffff8000211927e0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806e51ee50,ffff8000211927e0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000211927e0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000211927e0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000211927e0,ffff800022c68360,ffff800022c683c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022c68430) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022c68430) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffec690, 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 __mp_lock(ffffffff82a99e80) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a99e80) at __mp_lock+0x129 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff8000211353c0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd807abf1a40) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd807abf1a40) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f97a0) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: 7 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 __mp_lock(ffffffff82a99e80) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82a99e80) at __mp_lock+0x129 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff8000211353c0,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1615 uvm_map_teardown(fffffd807abf1a40) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2789 uvmspace_free(fffffd807abf1a40) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3685 reaper(ffff8000210f97a0) at reaper+0x18b sys/kern/kern_exit.c:457 end trace frame: 0x0, count: -8