uvm_fault(0xfffffd805a4f2458, 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(ffff800000c56540) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c56540) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c17960) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f67c000) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 rip_detach(fffffd807f54a978) at rip_detach+0x6a sys/netinet/raw_ip.c:616 soclose(fffffd807f54a978,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd806599c568,ffff8000ffff2d28) at soo_close+0x40 fdrop(fffffd806599c568,ffff8000ffff2d28) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806599c568,ffff8000ffff2d28) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff2d28) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff2d28,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000ffff2d28,ffff800024d61270,ffff800024d612d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024d61340) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024d61340) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, 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(0xfffffd805a4f2458, 0x4, 0, 1) -> e ddb{0}> trace igmp_leavegroup(ffff800000c56540) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c56540) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c17960) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f67c000) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 rip_detach(fffffd807f54a978) at rip_detach+0x6a sys/netinet/raw_ip.c:616 soclose(fffffd807f54a978,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd806599c568,ffff8000ffff2d28) at soo_close+0x40 fdrop(fffffd806599c568,ffff8000ffff2d28) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806599c568,ffff8000ffff2d28) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff2d28) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff2d28,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000ffff2d28,ffff800024d61270,ffff800024d612d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024d61340) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024d61340) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800024d60ee0 rbx 0 rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0x745af9a6176b1724 r11 0x564748c596d9463 r12 0 r13 0x3 r14 0xffff800000689000 r15 0xffff800000c56540 rip 0xffffffff81ddfc00 igmp_leavegroup+0x80 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800024d60eb0 ss 0x10 igmp_leavegroup+0x80: movl 0x4(%rax),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=236194 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff80002e5da540,0xffff800021143518 process=0xffff8000246ba588 user=0xffff800024d5c000, vmspace=0xfffffd805a4f2458 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 84074 438890 33127 0 2 0 syz-executor.3 84074 73976 33127 0 2 0x4000000 syz-executor.3 95334 215235 40384 0 2 0 syz-executor.7 95334 391294 40384 0 3 0x4000080 fsleep syz-executor.7 15970 163544 78407 0 2 0 syz-executor.1 15970 391611 78407 0 3 0x4000080 fsleep syz-executor.1 51106 443069 70655 0 2 0x10 syz-executor.2 51106 130828 70655 0 3 0x4000090 fsleep syz-executor.2 27871 140317 68605 0 3 0x82 nanoslp syz-executor.0 40384 33574 68605 0 3 0x82 nanoslp syz-executor.7 70655 389288 68605 0 3 0x82 nanoslp syz-executor.2 47597 298776 68605 0 3 0x82 nanoslp syz-executor.6 69657 90868 0 0 3 0x14280 nfsidl nfsio 27740 2748 0 0 3 0x14280 nfsidl nfsio 65024 455042 0 0 3 0x14280 nfsidl nfsio 82215 135513 0 0 3 0x14280 nfsidl nfsio 49672 279947 0 0 3 0x14280 nfsidl nfsio 18492 397072 0 0 3 0x14280 nfsidl nfsio 63347 296513 0 0 3 0x14280 nfsidl nfsio 36118 177939 0 0 3 0x14280 nfsidl nfsio 4918 301142 0 0 3 0x14280 nfsidl nfsio 12617 347106 0 0 3 0x14280 nfsidl nfsio 20328 61569 0 0 3 0x14280 nfsidl nfsio 49823 234635 0 0 3 0x14280 nfsidl nfsio 65434 501892 0 0 3 0x14280 nfsidl nfsio 98274 356427 0 0 3 0x14280 nfsidl nfsio 56814 250997 68605 0 2 0x2 syz-executor.4 78820 178002 68605 0 2 0x2 syz-executor.5 78407 260908 68605 0 3 0x82 nanoslp syz-executor.1 33127 152194 68605 0 3 0x82 nanoslp syz-executor.3 12581 20651 1 0 3 0x100083 ttyin getty 78082 226539 0 0 3 0x14280 nfsidl nfsio 33215 202130 0 0 3 0x14280 nfsidl nfsio 38142 427073 0 0 3 0x14280 nfsidl nfsio 34659 173483 0 0 3 0x14280 nfsidl nfsio 58013 383516 0 0 3 0x14280 nfsidl nfsio 69258 407491 0 0 3 0x14280 nfsidl nfsio 8636 198671 0 0 3 0x14200 bored sosplice 68605 164008 72259 0 3 0x82 thrsleep syz-fuzzer 68605 285033 72259 0 3 0x4000082 nanoslp syz-fuzzer 68605 192404 72259 0 3 0x4000082 thrsleep syz-fuzzer 68605 442064 72259 0 2 0x4000002 syz-fuzzer 68605 347756 72259 0 3 0x4000082 nanoslp syz-fuzzer 68605 420920 72259 0 3 0x4000082 thrsleep syz-fuzzer 68605 516683 72259 0 3 0x4000082 thrsleep syz-fuzzer 68605 240305 72259 0 3 0x4000082 thrsleep syz-fuzzer 68605 372403 72259 0 3 0x4000082 thrsleep syz-fuzzer 72259 465616 54452 0 3 0x10008a sigsusp ksh 54452 480587 61448 0 3 0x9a kqread sshd 61448 335510 1 0 3 0x88 kqread sshd 63523 257969 1776 74 3 0x1100092 bpf pflogd 1776 113735 1 0 3 0x80 netio pflogd 48645 29457 55938 73 3 0x1100090 kqread syslogd 55938 177430 1 0 3 0x100082 netio syslogd 24087 248411 1 0 3 0x100080 kqread resolvd 25711 253345 98840 77 3 0x100092 kqread dhcpleased 47172 442044 98840 77 3 0x100092 kqread dhcpleased 98840 240896 1 0 3 0x80 kqread dhcpleased 17481 350516 0 0 3 0x14200 bored smr 12041 4797 0 0 2 0x14200 zerothread 11337 245762 0 0 3 0x14200 aiodoned aiodoned 24743 148625 0 0 3 0x14200 syncer update 58124 470081 0 0 3 0x14200 cleaner cleaner 42135 296776 0 0 3 0x14200 reaper reaper 87281 518970 0 0 3 0x14200 pgdaemon pagedaemon 4775 134904 0 0 3 0x14200 bored viomb 55628 348812 0 0 3 0x40014200 acpi0 acpi0 34197 276134 0 0 7 0x40014200 idle1 46381 330667 0 0 3 0x14200 bored softnet 59775 292316 0 0 3 0x14200 bored systqmp 96202 467103 0 0 3 0x14200 bored systq 4633 484755 0 0 3 0x40014200 bored softclock 75283 136081 0 0 3 0x40014200 idle0 1 285662 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10221 6586K 7378K 78643K 39687 0 pcb 13 20K 23K 78643K 3496 0 rtable 239 23K 26K 78643K 4272 0 ifaddr 105 24K 27K 78643K 1655 0 sysctl 3 1K 3K 78643K 16 0 counters 58 35K 36K 78643K 516 0 ioctlops 0 0K 4K 78643K 4909 0 iov 0 0K 32K 78643K 1800 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1488 93K 93K 78643K 10198 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 149 0 VM map 2 1K 1K 78643K 2 0 sem 19 10K 20K 78643K 1818 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 89K 78643K 18221 0 sigio 0 0K 0K 78643K 87 0 proc 72 87K 136K 78643K 2631 0 subproc 104 6K 6K 78643K 858 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 658 0 in_multi 77 5K 7K 78643K 1251 0 ether_multi 1 0K 0K 78643K 117 0 mrt 1 0K 0K 78643K 83 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 181 811K 811K 78643K 181 0 exec 0 0K 2K 78643K 4108 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 654 1225K 1228K 78643K 225066 0 UVM aobj 131 9K 9K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 795 0 NDP 15 0K 1K 78643K 411 0 temp 176 4769K 4847K 78643K 239223 0 kqueue 13 20K 28K 78643K 848 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 1702 0 1699 29 26 3 3 0 8 2 rtentry 112 1081 0 995 6 2 4 4 0 8 0 unpcb 136 9466 0 9447 96 93 3 9 0 8 2 syncache 296 57 0 57 13 13 0 1 0 8 0 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 736 6171 0 6163 212 209 3 14 0 8 2 arp 120 173 0 156 1 0 1 1 0 8 0 inpcb 304 16119 0 16106 204 198 6 16 0 8 4 rttmr 72 34 0 34 10 10 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 48 251 0 233 1 0 1 1 0 8 0 pkpcb 40 133 0 133 14 14 0 1 0 8 0 kcovpl 48 66 0 58 1 0 1 1 0 8 0 ppxss 1248 71 0 71 22 21 1 1 0 8 1 pfstscr 40 41 0 41 10 10 0 1 0 8 0 pffrag 232 73 0 73 6 5 1 1 0 482 1 pffrnode 88 72 0 72 6 5 1 1 0 8 1 pffrent 40 673 0 673 6 5 1 1 0 8 1 pfosfp 40 1432 0 1008 5 0 5 5 0 8 0 pfosfpen 112 1432 0 717 21 0 21 21 0 8 0 pfrktable 1344 403 0 386 9 7 2 2 0 8 0 pftag 88 52 0 48 2 1 1 1 0 8 0 pfqueue 264 4 0 4 1 1 0 1 0 8 0 pfstitem 24 49 0 47 1 0 1 1 0 8 0 pfstkey 112 172 0 170 1 0 1 1 0 8 0 pfstate 320 109 0 107 3 2 1 3 0 8 0 pfrule 1360 687 0 598 15 7 8 8 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 4680 0 4283 54 26 28 33 0 8 0 art_table 32 4681 0 4283 8 4 4 5 0 8 0 art_node 16 1076 0 999 1 0 1 1 0 8 0 sysvmsgpl 40 48 0 32 1 0 1 1 0 8 0 semapl 112 1800 0 1783 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 23865 0 22365 95 0 95 95 0 8 0 ffsino 272 23865 0 22365 101 0 101 101 0 8 0 nchpl 144 46871 0 45249 63 0 63 63 0 8 0 uvmvnodes 80 7021 0 0 144 0 144 144 0 8 0 vnodes 224 7021 0 0 413 0 413 413 0 8 0 namei 1024 181192 0 181192 6 5 1 2 0 8 1 percpumem 16 270 0 229 1 0 1 1 0 8 0 vcpupl 2048 361 0 0 46 0 46 46 0 8 0 vmpool 560 446 0 85 28 2 26 26 0 8 0 pfiaddrpl 120 122 0 93 3 2 1 1 0 8 0 scsiplug 72 9 0 9 3 3 0 1 0 8 0 scxspl 216 141245 0 141245 18 17 1 8 0 8 1 plimitpl 152 1612 0 1597 1 0 1 1 0 8 0 sigapl 424 18450 0 18386 11 3 8 8 0 8 0 futexpl 64 170119 0 170116 5 4 1 1 0 8 0 knotepl 120 299 0 0 7 0 7 7 0 8 0 kqueuepl 216 3719 0 3710 79 76 3 8 0 8 2 pipepl 336 3412 0 3384 75 72 3 11 0 8 0 fdescpl 496 18388 0 18360 5 0 5 5 0 8 0 filepl 152 128716 0 128461 181 166 15 27 0 8 5 lockfpl 104 5350 0 5348 9 8 1 2 0 8 0 lockfspl 48 1330 0 1328 1 0 1 1 0 8 0 sessionpl 144 83 0 66 1 0 1 1 0 8 0 pgrppl 48 106 0 89 1 0 1 1 0 8 0 ucredpl 96 12526 0 12512 1 0 1 1 0 8 0 zombiepl 144 18388 0 18386 2 1 1 1 0 8 0 processpl 1064 18450 0 18386 6 1 5 5 0 8 0 procpl 672 47411 0 47335 15 7 8 9 0 8 1 srpgc 96 58 0 58 12 12 0 1 0 8 0 sosppl 168 114 0 114 20 20 0 1 0 8 0 sockpl 480 27429 0 27394 585 573 12 34 0 8 7 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 31 0 0 4 1 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 562 0 0 53 25 28 53 0 8 0 mtagpl 96 887 0 0 14 0 14 14 0 8 0 mbufpl 256 4845 0 0 287 0 287 287 0 8 0 bufpl 288 31435 0 24413 502 0 502 502 0 8 0 anonpl 24 5008786 0 4979698 389 196 193 203 0 186 13 amapchunkpl 152 550437 0 549520 131 89 42 53 0 158 2 amappl16 200 44630 0 43458 128 61 67 73 0 8 0 amappl15 192 4321 0 4313 1 0 1 1 0 8 0 amappl14 184 2490 0 2481 1 0 1 1 0 8 0 amappl13 176 2290 0 2285 1 0 1 1 0 8 0 amappl12 168 3310 0 3305 1 0 1 1 0 8 0 amappl11 160 2216 0 2199 1 0 1 1 0 8 0 amappl10 152 2994 0 2986 1 0 1 1 0 8 0 amappl9 144 866 0 863 1 0 1 1 0 8 0 amappl8 136 3532 0 3360 7 0 7 7 0 8 0 amappl7 128 1730 0 1719 1 0 1 1 0 8 0 amappl6 120 796 0 765 5 4 1 2 0 8 0 amappl5 112 17228 0 17209 1 0 1 1 0 8 0 amappl4 104 6817 0 6779 2 0 2 2 0 8 0 amappl3 96 5063 0 5049 1 0 1 1 0 8 0 amappl2 88 5174 0 5103 3 1 2 3 0 8 0 amappl1 80 324169 0 323596 23 9 14 19 0 8 0 amappl 88 223085 0 222725 12 2 10 10 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 18834 0 18445 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 18834 0 18445 3 0 3 3 0 8 0 vmmpekpl 168 123444 0 123339 5 0 5 5 0 8 0 vmmpepl 168 1654509 0 1650265 456 255 201 213 0 357 0 vmsppl 368 18833 0 18445 37 1 36 36 0 8 0 rwobjpl 56 387743 0 378222 148 12 136 136 0 8 0 pdppl 4096 37675 0 37251 957 527 430 430 0 8 6 pvpl 32 8352084 0 8326167 596 338 258 281 0 265 40 pmappl 248 18833 0 18445 26 1 25 25 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2461 0 876 46 0 46 46 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace igmp_leavegroup(ffff800000c56540) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c56540) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c17960) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f67c000) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 rip_detach(fffffd807f54a978) at rip_detach+0x6a sys/netinet/raw_ip.c:616 soclose(fffffd807f54a978,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd806599c568,ffff8000ffff2d28) at soo_close+0x40 fdrop(fffffd806599c568,ffff8000ffff2d28) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806599c568,ffff8000ffff2d28) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000ffff2d28) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000ffff2d28,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000ffff2d28,ffff800024d61270,ffff800024d612d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024d61340) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024d61340) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, 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