uvm_fault(0xfffffd8067e2cbb0, 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(ffff800000d1de40) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000d1de40) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff8000006c5770) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f6814c0) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806d4b65b8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806d4b65b8,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd8066731278,ffff80002e4257a0) at soo_close+0x40 fdrop(fffffd8066731278,ffff80002e4257a0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8066731278,ffff80002e4257a0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002e4257a0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002e4257a0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff80002e4257a0,ffff800021218710,ffff800021218770) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000212187e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212187e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbd810, 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(0xfffffd8067e2cbb0, 0x4, 0, 1) -> e ddb{0}> trace igmp_leavegroup(ffff800000d1de40) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000d1de40) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff8000006c5770) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f6814c0) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806d4b65b8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806d4b65b8,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd8066731278,ffff80002e4257a0) at soo_close+0x40 fdrop(fffffd8066731278,ffff80002e4257a0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8066731278,ffff80002e4257a0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002e4257a0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002e4257a0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff80002e4257a0,ffff800021218710,ffff800021218770) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000212187e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212187e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbd810, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800021218390 rbx 0 rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0x53861e240b508286 r11 0x1c0af6a66642ba75 r12 0 r13 0x3 r14 0xffff800000689000 r15 0xffff800000d1de40 rip 0xffffffff81337860 igmp_leavegroup+0x80 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021218360 ss 0x10 igmp_leavegroup+0x80: movl 0x4(%rax),%r12d ddb{0}> show proc PROC (syz-executor.3) pid=69305 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=85, nice=20 forw=0xffffffffffffffff, list=0xffff80002e425ce0,0xffff80002e4247f0 process=0xffff8000fffe8c98 user=0xffff800021213000, vmspace=0xfffffd8067e2cbb0 estcpu=35, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 30690 479098 21564 0 2 0 syz-executor.0 84776 84958 64383 0 2 0 syz-executor.4 84776 191631 64383 0 2 0x4000000 syz-executor.4 38077 486775 12526 0 2 0 syz-executor.1 38077 299326 12526 0 3 0x4000080 ttyin syz-executor.1 8157 93291 9989 0 2 0x482 syz-executor.6 12526 29683 9989 0 3 0x82 nanoslp syz-executor.1 81238 237024 9989 0 3 0x82 nanoslp syz-executor.3 27666 293784 0 0 3 0x14200 acct acct 38818 283651 9989 0 2 0x2 syz-executor.5 27790 121215 9989 0 2 0x2 syz-executor.7 53246 193667 1 0 3 0x100083 ttyin getty 64383 480770 9989 0 3 0x82 nanoslp syz-executor.4 21564 90895 9989 0 3 0x82 nanoslp syz-executor.0 18241 75366 0 0 3 0x14280 nfsidl nfsio 56367 322015 0 0 3 0x14280 nfsidl nfsio 20707 299954 0 0 3 0x14280 nfsidl nfsio 61786 125469 0 0 3 0x14280 nfsidl nfsio 86276 479677 0 0 3 0x14280 nfsidl nfsio 79806 154232 0 0 3 0x14280 nfsidl nfsio 72993 217135 0 0 3 0x14280 nfsidl nfsio 67002 283870 0 0 3 0x14280 nfsidl nfsio 9321 420610 0 0 3 0x14280 nfsidl nfsio 49535 320005 0 0 3 0x14280 nfsidl nfsio 49414 397486 0 0 3 0x14280 nfsidl nfsio 43574 178741 0 0 3 0x14280 nfsidl nfsio 94171 457178 0 0 3 0x14280 nfsidl nfsio 91120 86971 0 0 3 0x14280 nfsidl nfsio 51408 512107 0 0 3 0x14280 nfsidl nfsio 97239 442205 0 0 3 0x14280 nfsidl nfsio 7285 372136 0 0 3 0x14280 nfsidl nfsio 38204 447056 0 0 3 0x14280 nfsidl nfsio 25514 306724 0 0 3 0x14280 nfsidl nfsio 72699 459860 0 0 3 0x14280 nfsidl nfsio 71903 335150 0 0 3 0x14200 bored sosplice 9989 515223 72914 0 3 0x82 thrsleep syz-fuzzer 9989 196621 72914 0 2 0x4000482 syz-fuzzer 9989 255009 72914 0 3 0x4000082 thrsleep syz-fuzzer 9989 467779 72914 0 3 0x4000082 thrsleep syz-fuzzer 9989 480010 72914 0 3 0x4000082 thrsleep syz-fuzzer 9989 268246 72914 0 3 0x4000082 thrsleep syz-fuzzer 9989 449426 72914 0 2 0x4000482 syz-fuzzer 9989 332942 72914 0 3 0x4000082 kqread syz-fuzzer 72914 517652 67630 0 3 0x10008a sigsusp ksh 67630 470161 92970 0 3 0x9a poll sshd 92970 303984 1 0 3 0x88 poll sshd 68899 353008 60344 74 3 0x100092 bpf pflogd 60344 464794 1 0 3 0x80 netio pflogd 64637 229955 79794 73 3 0x100090 kqread syslogd 79794 133617 1 0 3 0x100082 netio syslogd 54806 55854 1 0 3 0x100080 kqread resolvd 83233 192695 73190 77 3 0x100092 kqread dhcpleased 86651 521261 73190 77 3 0x100092 kqread dhcpleased 73190 464074 1 0 3 0x80 kqread dhcpleased 77056 454897 0 0 3 0x14200 bored smr 66288 185930 0 0 2 0x14200 zerothread 90508 407987 0 0 3 0x14200 aiodoned aiodoned 32350 239712 0 0 3 0x14200 syncer update 19849 474756 0 0 3 0x14200 cleaner cleaner 23077 461054 0 0 3 0x14200 reaper reaper 18844 272217 0 0 3 0x14200 pgdaemon pagedaemon 84523 442507 0 0 3 0x14200 bored viomb 32599 204924 0 0 3 0x40014200 acpi0 acpi0 51386 77408 0 0 7 0x40014200 idle1 75836 231172 0 0 3 0x14200 bored softnet 76095 302395 0 0 3 0x14200 bored systqmp 8921 376061 0 0 3 0x14200 bored systq 6774 5829 0 0 2 0x40014200 softclock 49012 203583 0 0 3 0x40014200 idle0 1 413012 0 0 3 0x80082 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 10212 6515K 10635K 78643K 52027 0 pcb 13 24K 29K 78643K 5401 0 rtable 230 29K 31K 78643K 9113 0 ifaddr 87 25K 30K 78643K 2838 0 sysctl 3 1K 1K 78643K 3 0 counters 54 35K 36K 78643K 656 0 ioctlops 0 0K 8K 78643K 7118 0 iov 1 4K 24K 78643K 2023 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1601 100K 101K 78643K 14130 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 163 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 2384 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 13 45K 89K 78643K 22229 0 sigio 0 0K 0K 78643K 341 0 proc 70 87K 123K 78643K 3807 0 subproc 91 11K 13K 78643K 1181 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 1K 78643K 24363 0 in_multi 66 4K 6K 78643K 5035 0 ether_multi 1 0K 0K 78643K 278 0 mrt 1 0K 0K 78643K 139 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 241 1076K 1076K 78643K 241 0 exec 0 0K 2K 78643K 5009 0 pfkey data 0 0K 0K 78643K 15 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 647 1356K 1365K 78643K 280047 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1360 0 NDP 12 0K 2K 78643K 607 0 temp 146 4737K 4831K 78643K 209059 0 kqueue 10 14K 24K 78643K 915 0 SYN cache 2 8K 16K 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 1943 0 1940 30 29 1 5 0 8 0 rtentry 112 1556 0 1486 4 1 3 4 0 8 0 unpcb 136 15443 0 15428 160 157 3 9 0 8 2 syncache 296 79 0 79 26 26 0 1 0 8 0 tcpqe 32 95 68 95 7 7 0 1 0 8 0 tcpcb 736 7624 0 7618 226 222 4 17 0 8 2 arp 120 272 0 259 1 0 1 1 0 8 0 inpcb 304 47961 0 47949 318 311 7 22 0 8 5 rttmr 72 43 0 43 15 14 1 1 0 8 1 nd6 48 409 0 394 1 0 1 1 0 8 0 pkpcb 40 170 0 170 14 14 0 1 0 8 0 kcovpl 48 90 0 83 1 0 1 1 0 8 0 ppxss 1248 80 0 80 22 22 0 1 0 8 0 pfstscr 40 209 0 209 12 12 0 1 0 8 0 pffrag 232 61 0 61 8 8 0 1 0 482 0 pffrnode 88 61 0 61 8 8 0 1 0 8 0 pffrent 40 1151 0 1151 9 9 0 1 0 8 0 pfosfp 40 1643 0 1637 6 5 1 5 0 8 0 pfosfpen 112 1643 0 1524 26 22 4 21 0 8 0 pfrke_plain 168 15 0 15 3 3 0 1 0 8 0 pfrktable 1344 2146 0 2116 9 6 3 3 0 8 0 pfpktdelay 88 2 0 2 1 1 0 1 0 8 0 pftag 88 14 0 9 1 0 1 1 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 103 0 101 1 0 1 1 0 8 0 pfstkey 112 505 0 503 2 1 1 2 0 8 0 pfstate 320 301 0 299 5 4 1 5 0 8 0 pfrule 1360 1417 0 1268 19 6 13 13 0 8 0 art_heap8 4096 6 0 5 3 2 1 3 0 8 0 art_heap4 256 5765 0 5438 49 22 27 31 0 8 0 art_table 32 5771 0 5443 4 0 4 4 0 8 0 art_node 16 1545 0 1484 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 1 0 1 1 0 8 0 semapl 112 2382 0 2372 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 29398 0 27876 96 0 96 96 0 8 0 ffsino 272 29398 0 27876 103 1 102 102 0 8 0 nchpl 144 58008 0 56397 63 0 63 63 0 8 0 rtmask 32 8 0 8 2 2 0 1 0 8 0 uvmvnodes 80 6893 0 0 141 0 141 141 0 8 0 vnodes 224 6893 0 0 406 0 406 406 0 8 0 namei 1024 208134 0 208134 11 10 1 2 0 8 1 percpumem 16 340 0 301 1 0 1 1 0 8 0 vcpupl 2048 382 0 2 48 0 48 48 0 8 0 vmpool 560 417 0 37 31 3 28 28 0 8 0 pfiaddrpl 120 828 0 746 5 2 3 3 0 8 0 scsiplug 72 25 0 25 7 7 0 1 0 8 0 scxspl 216 180964 0 180964 37 36 1 8 0 8 1 plimitpl 152 2331 0 2315 1 0 1 1 0 8 0 sigapl 424 22437 0 22375 11 3 8 8 0 8 0 futexpl 64 218983 0 218983 9 8 1 1 0 8 1 knotepl 112 281 0 0 6 1 5 5 0 8 0 kqueuepl 216 4183 0 4170 83 81 2 8 0 8 0 pipepl 336 4110 0 4085 116 113 3 13 0 8 0 fdescpl 496 22358 0 22332 5 1 4 5 0 8 0 filepl 152 167328 0 167103 276 260 16 23 0 8 5 lockfpl 104 6792 0 6790 14 13 1 2 0 8 0 lockfspl 48 2098 0 2096 1 0 1 1 0 8 0 sessionpl 144 109 0 93 1 0 1 1 0 8 0 pgrppl 48 112 0 96 1 0 1 1 0 8 0 ucredpl 96 15271 0 15248 1 0 1 1 0 8 0 zombiepl 144 22376 0 22374 4 3 1 1 0 8 0 processpl 1064 22437 0 22374 5 0 5 5 0 8 0 procpl 672 63304 0 63232 31 23 8 9 0 8 0 srpgc 96 93 0 93 18 18 0 1 0 8 0 sosppl 168 171 0 170 16 15 1 1 0 8 0 sockpl 480 65598 0 65568 1095 1085 10 45 0 8 5 mcl64k 65536 42 0 0 3 0 3 3 0 8 0 mcl16k 16384 49 0 0 6 3 3 3 0 8 0 mcl12k 12288 42 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 65 0 0 4 1 3 3 0 8 0 mcl2k2 2112 12 0 0 1 0 1 1 0 8 0 mcl2k 2048 465 0 0 23 4 19 21 0 8 0 mtagpl 96 1078 0 0 15 0 15 15 0 8 0 mbufpl 256 9831 0 0 584 1 583 583 0 8 0 bufpl 288 37668 0 30771 493 0 493 493 0 8 0 anonpl 24 6357391 0 6337206 386 228 158 176 0 186 0 amapchunkpl 152 693876 0 693025 190 149 41 53 0 158 1 amappl16 200 61433 0 60540 260 211 49 60 0 8 0 amappl15 192 2782 0 2776 1 0 1 1 0 8 0 amappl14 184 1083 0 1078 2 1 1 1 0 8 0 amappl13 176 2693 0 2689 1 0 1 1 0 8 0 amappl12 168 2925 0 2918 1 0 1 1 0 8 0 amappl11 160 2128 0 2113 1 0 1 1 0 8 0 amappl10 152 5134 0 5126 1 0 1 1 0 8 0 amappl9 144 5485 0 5479 1 0 1 1 0 8 0 amappl8 136 3661 0 3485 9 2 7 7 0 8 0 amappl7 128 1454 0 1445 1 0 1 1 0 8 0 amappl6 120 5452 0 5416 4 2 2 2 0 8 0 amappl5 112 22598 0 22579 1 0 1 1 0 8 0 amappl4 104 6957 0 6921 4 2 2 2 0 8 0 amappl3 96 5101 0 5084 1 0 1 1 0 8 0 amappl2 88 6380 0 6313 2 0 2 2 0 8 0 amappl1 80 402861 0 402330 17 3 14 14 0 8 0 amappl 88 277632 0 277301 10 1 9 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 22775 0 22369 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 22775 0 22369 3 0 3 3 0 8 0 vmmpekpl 168 154225 0 154120 6 1 5 5 0 8 0 vmmpepl 168 2076096 0 2072559 608 429 179 202 0 357 1 vmsppl 368 22774 0 22369 42 4 38 38 0 8 0 rwobjpl 56 493895 0 484816 157 27 130 132 0 8 0 pdppl 4096 45557 0 45118 1361 916 445 450 0 8 6 pvpl 32 10856093 0 10834966 638 416 222 273 0 265 0 pmappl 248 22774 0 22369 27 1 26 26 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 3196 0 1307 55 0 55 55 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace igmp_leavegroup(ffff800000d1de40) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000d1de40) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff8000006c5770) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f6814c0) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806d4b65b8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806d4b65b8,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd8066731278,ffff80002e4257a0) at soo_close+0x40 fdrop(fffffd8066731278,ffff80002e4257a0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8066731278,ffff80002e4257a0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002e4257a0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002e4257a0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff80002e4257a0,ffff800021218710,ffff800021218770) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000212187e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212187e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbd810, 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