uvm_fault(0xfffffd80089fe3a0, 0x4, 0, 1) -> e kernel: page fault trap, code=0 Stopped at igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND igmp_leavegroup(ffff800000d47e40,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d47e40) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000e2c1a0) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd80670b5d18) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8065d75d90) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8065d75d90,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8065d75d90,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd80774287d0,ffff8000212d0e10) at soo_close+0x44 fdrop(fffffd80774287d0,ffff8000212d0e10) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd80774287d0,ffff8000212d0e10) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff8000212d0e10) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff8000212d0e10,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff8000212d0e10,ffff8000211f15a0,ffff8000211f15f0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000211f1670) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000211f1670) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bbf914885d0, 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(0xfffffd80089fe3a0, 0x4, 0, 1) -> e ddb{0}> trace igmp_leavegroup(ffff800000d47e40,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d47e40) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000e2c1a0) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd80670b5d18) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8065d75d90) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8065d75d90,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8065d75d90,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd80774287d0,ffff8000212d0e10) at soo_close+0x44 fdrop(fffffd80774287d0,ffff8000212d0e10) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd80774287d0,ffff8000212d0e10) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff8000212d0e10) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff8000212d0e10,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff8000212d0e10,ffff8000211f15a0,ffff8000211f15f0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000211f1670) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000211f1670) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bbf914885d0, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000211f1230 rbx 0x3 rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0x34423cf10b677778 r11 0xc4b103ae22ad2c94 r12 0 r13 0x3 r14 0xffff800000d47e40 r15 0xffff8000006b8000 rip 0xffffffff820007bf igmp_leavegroup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000211f1200 ss 0x10 igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d ddb{0}> show proc PROC (syz-executor.6) pid=105215 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212d1638,0xffff8000212d10d8 process=0xffff800021295d68 user=0xffff8000211ec000, vmspace=0xfffffd80089fe3a0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82382 350921 4899 0 3 0x80 nanoslp syz-executor.4 82382 155475 4899 0 3 0x4000080 netio syz-executor.4 82382 474200 4899 0 3 0x4000080 fsleep syz-executor.4 42588 350869 1 0 3 0x100083 ttyin getty 4899 143598 26038 0 3 0x82 nanoslp syz-executor.4 393 422511 26038 0 3 0x82 piperd syz-executor.7 96434 210025 26038 0 3 0x82 piperd syz-executor.0 63010 142632 26038 0 3 0x82 nanoslp syz-executor.6 26707 513978 26038 0 3 0x82 piperd syz-executor.1 30537 384399 0 0 3 0x14280 nfsidl nfsio 86528 329296 0 0 3 0x14280 nfsidl nfsio 18340 241611 0 0 3 0x14280 nfsidl nfsio 70241 232043 0 0 3 0x14280 nfsidl nfsio 80847 41854 0 0 3 0x14280 nfsidl nfsio 67887 400289 0 0 3 0x14280 nfsidl nfsio 5041 512643 0 0 3 0x14280 nfsidl nfsio 13417 469818 0 0 3 0x14280 nfsidl nfsio 4397 115935 0 0 3 0x14280 nfsidl nfsio 272 7339 0 0 3 0x14280 nfsidl nfsio 63942 362600 0 0 3 0x14280 nfsidl nfsio 90051 171331 0 0 3 0x14280 nfsidl nfsio 30597 313734 0 0 3 0x14280 nfsidl nfsio 7474 167602 0 0 3 0x14280 nfsidl nfsio 35760 346709 0 0 3 0x14280 nfsidl nfsio 24994 506363 0 0 3 0x14280 nfsidl nfsio 99966 98637 0 0 3 0x14280 nfsidl nfsio 57578 108632 0 0 3 0x14280 nfsidl nfsio 30120 94992 0 0 3 0x14280 nfsidl nfsio 57760 234622 0 0 3 0x14280 nfsidl nfsio 31297 207161 0 0 3 0x14200 bored sosplice 8234 448038 26038 0 3 0x82 nanoslp syz-executor.2 81005 264863 26038 0 3 0x82 piperd syz-executor.5 5006 142380 26038 0 3 0x82 piperd syz-executor.3 26038 227798 58211 0 3 0x82 wait syz-fuzzer 26038 833 58211 0 3 0x4000082 thrsleep syz-fuzzer 26038 62182 58211 0 3 0x4000082 kqread syz-fuzzer 26038 183259 58211 0 3 0x4000082 thrsleep syz-fuzzer 26038 464657 58211 0 3 0x4000082 wait syz-fuzzer 26038 121354 58211 0 3 0x4000082 thrsleep syz-fuzzer 26038 184885 58211 0 3 0x4000082 wait syz-fuzzer 26038 123269 58211 0 3 0x4000082 wait syz-fuzzer 26038 251461 58211 0 3 0x4000082 wait syz-fuzzer 26038 412562 58211 0 3 0x4000082 thrsleep syz-fuzzer 26038 450160 58211 0 3 0x4000082 thrsleep syz-fuzzer 26038 150578 58211 0 3 0x4000082 wait syz-fuzzer 26038 197370 58211 0 3 0x4000082 wait syz-fuzzer 26038 54551 58211 0 3 0x4000082 thrsleep syz-fuzzer 26038 53144 58211 0 3 0x4000082 wait syz-fuzzer 26038 359553 58211 0 3 0x4000082 thrsleep syz-fuzzer 58211 480488 8370 0 3 0x10008a sigsusp ksh 8370 494757 55382 0 3 0x9a kqread sshd 55382 95835 1 0 3 0x88 kqread sshd 44363 451656 9133 74 3 0x1100092 bpf pflogd 9133 499343 1 0 3 0x80 netio pflogd 79875 275852 57532 73 3 0x1100090 kqread syslogd 57532 67659 1 0 3 0x100082 netio syslogd 35518 218865 1 0 3 0x100080 kqread resolvd 67866 243183 65550 77 3 0x100092 kqread dhcpleased 65576 6374 65550 77 3 0x100092 kqread dhcpleased 65550 279273 1 0 3 0x80 kqread dhcpleased 66340 465890 0 0 3 0x14200 bored smr 93631 514172 0 0 2 0x14200 zerothread 78742 75691 0 0 3 0x14200 aiodoned aiodoned 92068 131275 0 0 3 0x14200 syncer update 33591 348090 0 0 3 0x14200 cleaner cleaner 73713 283532 0 0 3 0x14200 reaper reaper 55343 441806 0 0 3 0x14200 pgdaemon pagedaemon 32960 107425 0 0 3 0x14200 bored viomb 35542 310300 0 0 3 0x40014200 acpi0 acpi0 30322 471728 0 0 7 0x40014200 idle1 77116 42009 0 0 3 0x14200 bored softnet3 78441 230042 0 0 3 0x14200 bored softnet2 5073 378259 0 0 3 0x14200 bored softnet1 40144 65482 0 0 3 0x14200 bored softnet0 41242 21985 0 0 3 0x14200 bored systqmp 33405 403913 0 0 3 0x14200 bored systq 95101 36618 0 0 3 0x40014200 bored softclock 5302 435870 0 0 3 0x40014200 idle0 1 503893 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 10224 6499K 6754K 78643K 14249 0 pcb 14 18K 21K 78643K 652 0 rtable 204 16K 17K 78643K 920 0 ifaddr 78 25K 28K 78643K 345 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 36K 78643K 228 0 ioctlops 0 0K 4K 78643K 1683 0 iov 1 2K 20K 78643K 546 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1534 96K 97K 78643K 4770 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 58 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1025 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 12 41K 89K 78643K 3870 0 sigio 0 0K 0K 78643K 68 0 proc 73 91K 128K 78643K 941 0 subproc 104 6K 6K 78643K 169 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 252 0 in_multi 77 5K 6K 78643K 265 0 ether_multi 2 0K 0K 78643K 30 0 mrt 1 0K 0K 78643K 24 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 1K 78643K 965 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 8 62K 64K 78643K 10 0 UVM amap 349 88K 104K 78643K 39644 0 UVM aobj 63 4K 4K 78643K 88 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 118 0 NDP 14 0K 1K 78643K 106 0 temp 138 5868K 6894K 78643K 21402 0 kqueue 12 18K 26K 78643K 316 0 SYN cache 2 24K 32K 78643K 3 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 120 173 0 170 1 0 1 1 0 8 0 rtentry 112 270 0 188 4 0 4 4 0 8 0 unpcb 144 4186 0 4171 58 57 1 10 0 8 0 syncache 296 31 0 31 9 9 0 1 0 8 0 tcpqe 32 101 0 101 7 7 0 1 0 8 0 tcpcb 776 1375 0 1368 41 39 2 14 0 8 0 arp 120 45 0 29 1 0 1 1 0 8 0 inpcb 368 4351 0 4338 65 63 2 14 0 8 0 ip6q 72 3 0 3 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 136 51 0 30 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 ppxss 1256 49 0 49 6 6 0 1 0 8 0 pppxif 1456 23 0 23 4 4 0 1 0 8 0 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pffrag 232 34 0 32 2 1 1 1 0 482 0 pffrnode 88 34 0 32 2 1 1 1 0 8 0 pffrent 40 108 0 106 2 1 1 1 0 8 0 pfosfp 40 1431 0 1007 5 0 5 5 0 8 0 pfosfpen 112 1431 0 716 21 0 21 21 0 8 0 pfanchor 1288 377 0 0 32 0 32 32 0 8 0 pfstitem 24 182 0 160 1 0 1 1 0 8 0 pfstkey 128 186 0 164 2 0 2 2 0 8 0 pfstate 384 183 0 162 7 2 5 6 0 8 1 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 5 0 5 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1235 0 864 39 10 29 32 0 8 0 art_table 32 1236 0 864 6 1 5 5 0 8 0 art_node 16 263 0 191 1 0 1 1 0 8 0 semapl 112 989 0 979 1 0 1 1 0 8 0 shmpl 112 85 0 25 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7892 0 6438 92 0 92 92 0 8 0 ffsino 272 7892 0 6438 98 0 98 98 0 8 0 nchpl 144 13632 0 11982 64 0 64 64 0 8 0 rtmask 32 3 0 3 2 2 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 51105 0 51105 4 3 1 2 0 8 1 percpumem 16 127 0 86 1 0 1 1 0 8 0 kstatmem 264 148 0 120 5 2 3 3 0 8 0 scsiplug 72 8 0 8 3 3 0 1 0 8 0 scxspl 216 33316 0 33316 16 15 1 8 0 8 1 plimitpl 152 458 0 442 1 0 1 1 0 8 0 sigapl 424 4198 0 4134 10 2 8 8 0 8 0 futexpl 64 39490 0 39489 1 0 1 1 0 8 0 knotepl 120 555 0 0 12 0 12 12 0 8 0 kqueuepl 216 628 0 620 11 10 1 5 0 8 0 pipepl 320 902 0 874 32 29 3 9 0 8 0 fdescpl 496 4159 0 4134 5 1 4 5 0 8 0 filepl 152 34774 0 34533 91 81 10 23 0 8 0 lockfpl 104 939 0 937 3 2 1 2 0 8 0 lockfspl 48 280 0 278 1 0 1 1 0 8 0 sessionpl 144 30 0 13 1 0 1 1 0 8 0 pgrppl 48 240 0 223 1 0 1 1 0 8 0 ucredpl 104 10132 0 10120 1 0 1 1 0 8 0 zombiepl 144 4136 0 4134 3 2 1 1 0 8 0 processpl 1072 4198 0 4134 5 0 5 5 0 8 0 procpl 696 10546 0 10465 17 8 9 10 0 8 0 srpgc 96 10 0 10 4 4 0 1 0 8 0 sosppl 168 65 0 65 10 9 1 1 0 8 1 sockpl 488 8721 0 8690 221 215 6 47 0 8 1 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 20 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 420 0 0 52 0 52 52 0 8 0 mtagpl 96 82 0 0 2 0 2 2 0 8 0 mbufpl 256 1271 0 0 75 0 75 75 0 8 0 bufpl 288 8888 0 2574 452 0 452 452 0 8 0 anonpl 24 560684 0 545151 160 47 113 121 0 186 4 amapchunkpl 152 127265 0 126419 81 37 44 49 0 158 2 amappl16 200 13509 0 13042 79 53 26 38 0 8 0 amappl15 192 55 0 55 1 1 0 1 0 8 0 amappl14 184 186 0 172 2 1 1 2 0 8 0 amappl13 176 20 0 19 1 0 1 1 0 8 0 amappl12 168 4900 0 4872 3 1 2 2 0 8 0 amappl11 160 74 0 60 1 0 1 1 0 8 0 amappl10 152 103 0 92 1 0 1 1 0 8 0 amappl9 144 191 0 190 3 2 1 2 0 8 0 amappl8 136 314 0 236 3 0 3 3 0 8 0 amappl7 128 92 0 72 1 0 1 1 0 8 0 amappl6 120 307 0 286 2 1 1 2 0 8 0 amappl5 112 235 0 226 1 0 1 1 0 8 0 amappl4 104 791 0 749 3 1 2 3 0 8 0 amappl3 96 24924 0 24850 5 2 3 3 0 8 0 amappl2 88 4745 0 4676 3 1 2 3 0 8 0 amappl1 80 23499 0 22958 23 10 13 23 0 8 0 amappl 88 38958 0 38742 11 4 7 7 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 87 0 25 2 0 2 2 0 8 0 uaddrrnd 24 4159 0 4134 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4159 0 4134 1 0 1 1 0 8 0 vmmpekpl 168 34534 0 34463 4 0 4 4 0 8 0 vmmpepl 168 265806 0 263579 206 92 114 127 0 357 3 vmsppl 464 4158 0 4134 5 1 4 5 0 8 0 rwobjpl 56 76569 0 69016 113 2 111 111 0 8 0 pdppl 4096 8326 0 8268 344 274 70 82 0 8 12 pvpl 32 1365042 0 1343975 443 240 203 368 0 265 12 pmappl 248 4158 0 4134 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1245 0 358 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace igmp_leavegroup(ffff800000d47e40,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d47e40) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000e2c1a0) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd80670b5d18) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8065d75d90) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8065d75d90,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8065d75d90,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd80774287d0,ffff8000212d0e10) at soo_close+0x44 fdrop(fffffd80774287d0,ffff8000212d0e10) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd80774287d0,ffff8000212d0e10) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff8000212d0e10) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff8000212d0e10,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff8000212d0e10,ffff8000211f15a0,ffff8000211f15f0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff8000211f1670) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff8000211f1670) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bbf914885d0, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e 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(ffff800020d58ff0) at sched_idle+0x427 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e 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(ffff800020d58ff0) at sched_idle+0x427 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -5