uvm_fault(0xfffffd807ad885c0, 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(ffff8000012afec0) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff8000012afec0) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff800000c356f0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f679e40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806d7b0018) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806d7b0018,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd8066dd63b0,ffff80002e36f500) at soo_close+0x40 fdrop(fffffd8066dd63b0,ffff80002e36f500) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8066dd63b0,ffff80002e36f500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002e36f500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002e36f500,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff80002e36f500,ffff800024692ae0,ffff800024692b40) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024692bb0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024692bb0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, 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(0xfffffd807ad885c0, 0x4, 0, 1) -> e ddb{0}> trace igmp_leavegroup(ffff8000012afec0) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff8000012afec0) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff800000c356f0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f679e40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806d7b0018) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806d7b0018,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd8066dd63b0,ffff80002e36f500) at soo_close+0x40 fdrop(fffffd8066dd63b0,ffff80002e36f500) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8066dd63b0,ffff80002e36f500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002e36f500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002e36f500,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff80002e36f500,ffff800024692ae0,ffff800024692b40) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024692bb0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024692bb0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800024692760 rbx 0 rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0x68d76a85510d4624 r11 0x1006a6077f6e0520 r12 0 r13 0x3 r14 0xffff800000689000 r15 0xffff8000012afec0 rip 0xffffffff81a06310 igmp_leavegroup+0x80 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800024692730 ss 0x10 igmp_leavegroup+0x80: movl 0x4(%rax),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=424587 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff80002e36e2a0,0xffff80002e36ed30 process=0xffff800022c49910 user=0xffff80002468d000, vmspace=0xfffffd807ad885c0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 78353 251593 76890 0 2 0 syz-executor.5 78353 203907 76890 0 3 0x4000080 fsleep syz-executor.5 58589 345631 33050 0 2 0 syz-executor.7 58589 50658 33050 0 3 0x4000080 fsleep syz-executor.7 41155 450658 39625 0 2 0 syz-executor.4 41155 88991 39625 0 2 0x4000000 syz-executor.4 40662 63062 34692 0 2 0 syz-executor.3 73588 210788 98942 0 2 0 syz-executor.2 73588 466121 98942 0 2 0x4000000 syz-executor.2 73588 212594 98942 0 3 0x4000080 fsleep syz-executor.2 73588 498996 98942 0 2 0x4000000 syz-executor.2 87565 79530 33263 0 3 0x82 nanoslp syz-executor.1 67765 65206 33263 0 2 0x2 syz-executor.6 39625 168402 33263 0 3 0x82 nanoslp syz-executor.4 76779 423299 33263 0 2 0x2 syz-executor.0 34692 124363 33263 0 3 0x82 nanoslp syz-executor.3 76890 20452 33263 0 3 0x82 nanoslp syz-executor.5 33050 294593 33263 0 3 0x82 nanoslp syz-executor.7 98942 147297 33263 0 3 0x82 nanoslp syz-executor.2 80536 252449 0 0 3 0x14200 acct acct 40060 161594 1 0 3 0x100083 ttyin getty 78923 21434 0 0 3 0x14200 bored sosplice 33263 132945 91787 0 3 0x82 thrsleep syz-fuzzer 33263 60287 91787 0 3 0x4000082 thrsleep syz-fuzzer 33263 276858 91787 0 3 0x4000082 thrsleep syz-fuzzer 33263 331943 91787 0 3 0x4000082 kqread syz-fuzzer 33263 190882 91787 0 3 0x4000082 thrsleep syz-fuzzer 33263 396500 91787 0 3 0x4000082 thrsleep syz-fuzzer 33263 29239 91787 0 3 0x4000082 thrsleep syz-fuzzer 33263 500741 91787 0 3 0x4000082 thrsleep syz-fuzzer 33263 288707 91787 0 3 0x4000082 thrsleep syz-fuzzer 91787 488629 7923 0 3 0x10008a sigsusp ksh 7923 468481 62362 0 3 0x9a poll sshd 62362 81483 1 0 3 0x88 poll sshd 56198 488089 78854 74 3 0x100092 bpf pflogd 78854 42299 1 0 3 0x80 netio pflogd 12515 227641 96196 73 3 0x100090 kqread syslogd 96196 344152 1 0 3 0x100082 netio syslogd 44444 9318 1 0 3 0x100080 kqread resolvd 7469 513926 63804 77 3 0x100092 kqread dhcpleased 60058 376807 63804 77 3 0x100092 kqread dhcpleased 63804 68650 1 0 3 0x80 kqread dhcpleased 6265 216772 0 0 3 0x14200 bored smr 10265 358426 0 0 2 0x14200 zerothread 97479 450257 0 0 3 0x14200 aiodoned aiodoned 89123 355892 0 0 3 0x14200 syncer update 16325 410544 0 0 3 0x14200 cleaner cleaner 34685 161362 0 0 3 0x14200 reaper reaper 50759 40089 0 0 3 0x14200 pgdaemon pagedaemon 12313 99873 0 0 3 0x14200 bored viomb 15238 399438 0 0 3 0x40014200 acpi0 acpi0 31353 259818 0 0 7 0x40014200 idle1 4516 16563 0 0 3 0x14200 bored softnet 54206 20954 0 0 3 0x14200 bored systqmp 8503 331459 0 0 3 0x14200 bored systq 56829 235531 0 0 3 0x40014200 bored softclock 1512 117117 0 0 3 0x40014200 idle0 1 522441 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 10375 6523K 7668K 78643K 140877 0 pcb 13 18K 21K 78643K 3528 0 rtable 340 45K 47K 78643K 12050 0 ifaddr 134 32K 33K 78643K 5491 0 sysctl 3 1K 1K 78643K 3 0 counters 56 35K 36K 78643K 520 0 ioctlops 0 0K 8K 78643K 25454 0 iov 0 0K 24K 78643K 1892 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1526 95K 96K 78643K 33010 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 276 0 VM map 2 1K 1K 78643K 2 0 sem 26 3K 5K 78643K 386 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 16 57K 85K 78643K 27698 0 sigio 0 0K 0K 78643K 484 0 proc 71 87K 148K 78643K 3586 0 subproc 104 6K 6K 78643K 1040 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 1335 0 in_multi 91 6K 6K 78643K 1771 0 ether_multi 1 0K 0K 78643K 310 0 mrt 1 0K 0K 78643K 104 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 397 1765K 1765K 78643K 397 0 exec 0 0K 2K 78643K 5536 0 pfkey data 0 0K 1K 78643K 81 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 757 1730K 1730K 78643K 348331 0 UVM aobj 131 8K 8K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1521 0 NDP 13 0K 1K 78643K 426 0 temp 188 4801K 4925K 78643K 378233 0 kqueue 10 14K 22K 78643K 1284 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 1334 0 1331 17 16 1 5 0 8 0 rtentry 112 1322 0 1229 4 0 4 4 0 8 0 unpcb 136 16418 0 16403 164 162 2 8 0 8 1 syncache 296 88 0 88 28 28 0 1 0 8 0 tcpqe 32 49 0 49 10 10 0 1 0 8 0 tcpcb 736 10518 0 10506 301 299 2 21 0 8 0 arp 120 219 0 202 1 0 1 1 0 8 0 inpcb 304 26491 0 26479 311 309 2 15 0 8 1 rttmr 72 25 0 24 6 5 1 1 0 8 0 nd6 48 279 0 258 1 0 1 1 0 8 0 pkpcb 40 261 0 261 25 25 0 1 0 8 0 kcovpl 48 80 0 72 1 0 1 1 0 8 0 ppxss 1248 61 0 61 18 18 0 1 0 8 0 pfstscr 40 111 0 111 9 9 0 1 0 8 0 pffrag 232 99 0 96 11 10 1 1 0 482 0 pffrnode 88 99 0 96 11 10 1 1 0 8 0 pffrent 40 1178 0 1175 14 13 1 1 0 8 0 pfosfp 40 1442 0 1017 5 0 5 5 0 8 0 pfosfpen 112 1442 0 723 21 0 21 21 0 8 0 pfrke_plain 168 142 0 135 2 1 1 1 0 8 0 pfrktable 1344 3871 0 3814 18 12 6 6 0 8 0 pftag 88 25 0 4 1 0 1 1 0 8 0 pfqueue 264 77 0 7 5 0 5 5 0 8 0 pfstitem 24 30 0 28 1 0 1 1 0 8 0 pfstkey 112 224 0 222 1 0 1 1 0 8 0 pfstate 320 122 0 120 2 1 1 2 0 8 0 pfsrctr 152 49 0 49 5 5 0 1 0 8 0 pfrule 1360 12785 0 9769 253 1 252 252 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 5679 0 5245 60 30 30 31 0 8 0 art_table 32 5680 0 5245 4 0 4 4 0 8 0 art_node 16 1246 0 1163 1 0 1 1 0 8 0 sysvmsgpl 40 31 0 12 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 380 0 356 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 35920 0 34364 98 0 98 98 0 8 0 ffsino 272 35920 0 34364 105 0 105 105 0 8 0 nchpl 144 71094 0 69471 63 0 63 63 0 8 0 rtmask 32 232 0 229 3 2 1 1 0 8 0 uvmvnodes 80 8235 0 0 169 0 169 169 0 8 0 vnodes 224 8235 0 0 485 0 485 485 0 8 0 namei 1024 271270 0 271270 9 8 1 2 0 8 1 percpumem 16 272 0 232 1 0 1 1 0 8 0 vcpupl 2048 283 0 0 36 0 36 36 0 8 0 vmpool 560 406 0 123 23 2 21 21 0 8 0 pfiaddrpl 120 693 0 542 6 1 5 5 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 208661 0 208661 39 38 1 8 0 8 1 plimitpl 152 2660 0 2645 1 0 1 1 0 8 0 sigapl 424 27878 0 27833 8 2 6 8 0 8 0 futexpl 64 282429 0 282426 4 3 1 1 0 8 0 knotepl 112 268 0 0 4 0 4 4 0 8 0 kqueuepl 216 7295 0 7277 117 114 3 5 0 8 1 pipepl 336 5768 0 5740 147 141 6 13 0 8 3 fdescpl 496 27842 0 27813 7 3 4 5 0 8 0 filepl 152 198309 0 198062 291 276 15 25 0 8 5 lockfpl 104 7697 0 7695 20 19 1 2 0 8 0 lockfspl 48 2366 0 2364 1 0 1 1 0 8 0 sessionpl 144 98 0 81 1 0 1 1 0 8 0 pgrppl 48 128 0 111 1 0 1 1 0 8 0 ucredpl 96 22447 0 22433 1 0 1 1 0 8 0 zombiepl 144 27834 0 27833 2 1 1 1 0 8 0 processpl 1064 27878 0 27833 5 0 5 5 0 8 0 procpl 672 77130 0 77071 30 22 8 9 0 8 0 srpgc 96 69 0 69 20 20 0 1 0 8 0 sosppl 168 196 0 196 30 29 1 1 0 8 1 sockpl 480 44522 0 44492 861 853 8 41 0 8 4 mcl64k 65536 46 0 0 4 2 2 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 41 0 0 2 0 2 2 0 8 0 mcl9k 9216 21 0 0 2 0 2 2 0 8 0 mcl8k 8192 27 0 0 3 0 3 3 0 8 0 mcl4k 4096 73 0 0 5 2 3 3 0 8 0 mcl2k2 2112 14 0 0 1 0 1 1 0 8 0 mcl2k 2048 683 0 0 52 2 50 51 0 8 0 mtagpl 96 2702 0 0 49 0 49 49 0 8 0 mbufpl 256 6911 0 0 383 2 381 382 0 8 0 bufpl 288 47214 0 38979 589 0 589 589 0 8 0 anonpl 24 7831466 0 7811046 335 194 141 161 0 186 0 amapchunkpl 152 858160 0 857241 204 164 40 52 0 158 0 amappl16 200 74638 0 73884 209 168 41 50 0 8 0 amappl15 192 3931 0 3924 1 0 1 1 0 8 0 amappl14 184 4302 0 4294 1 0 1 1 0 8 0 amappl13 176 1985 0 1984 1 0 1 1 0 8 0 amappl12 168 6587 0 6581 1 0 1 1 0 8 0 amappl11 160 1881 0 1864 1 0 1 1 0 8 0 amappl10 152 3727 0 3719 1 0 1 1 0 8 0 amappl9 144 5003 0 4997 1 0 1 1 0 8 0 amappl8 136 5256 0 5083 6 0 6 6 0 8 0 amappl7 128 3080 0 3068 1 0 1 1 0 8 0 amappl6 120 4979 0 4948 3 2 1 2 0 8 0 amappl5 112 26110 0 26088 1 0 1 1 0 8 0 amappl4 104 7163 0 7116 7 5 2 2 0 8 0 amappl3 96 9025 0 9007 1 0 1 1 0 8 0 amappl2 88 6321 0 6230 6 3 3 3 0 8 0 amappl1 80 496916 0 496336 20 6 14 19 0 8 0 amappl 88 345933 0 345537 10 0 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 28248 0 27936 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 28248 0 27936 2 0 2 2 0 8 0 vmmpekpl 168 194852 0 194769 5 0 5 5 0 8 0 vmmpepl 168 2522923 0 2519491 560 390 170 179 0 357 8 vmsppl 368 28247 0 27936 32 3 29 29 0 8 0 rwobjpl 56 603854 0 593460 175 27 148 148 0 8 0 pdppl 4096 56503 0 56155 1224 876 348 352 0 8 0 pvpl 32 13278279 0 13253540 663 446 217 265 0 265 0 pmappl 248 28247 0 27936 22 2 20 20 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 3312 0 1369 56 0 56 56 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace igmp_leavegroup(ffff8000012afec0) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff8000012afec0) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff800000c356f0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f679e40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806d7b0018) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806d7b0018,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd8066dd63b0,ffff80002e36f500) at soo_close+0x40 fdrop(fffffd8066dd63b0,ffff80002e36f500) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8066dd63b0,ffff80002e36f500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002e36f500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002e36f500,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff80002e36f500,ffff800024692ae0,ffff800024692b40) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024692bb0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024692bb0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, 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}> tace No such command