uvm_fault(0xfffffd805dbb9310, 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(ffff800000eb3a80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000eb3a80) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c21570) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f681e40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 udp_detach(fffffd806e2081f8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1249 soclose(fffffd806e2081f8,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd806c525d28,ffff80002121f7a0) at soo_close+0x40 fdrop(fffffd806c525d28,ffff80002121f7a0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806c525d28,ffff80002121f7a0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002121f7a0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002121f7a0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff80002121f7a0,ffff800022e58070,ffff800022e580d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022e58140) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022e58140) 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(0xfffffd805dbb9310, 0x4, 0, 1) -> e ddb{0}> trace igmp_leavegroup(ffff800000eb3a80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000eb3a80) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c21570) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f681e40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 udp_detach(fffffd806e2081f8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1249 soclose(fffffd806e2081f8,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd806c525d28,ffff80002121f7a0) at soo_close+0x40 fdrop(fffffd806c525d28,ffff80002121f7a0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806c525d28,ffff80002121f7a0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002121f7a0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002121f7a0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff80002121f7a0,ffff800022e58070,ffff800022e580d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022e58140) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022e58140) 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 0xffff800022e57cf0 rbx 0 rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0x2fe294a098183877 r11 0xc7e894e2dc1b896f r12 0 r13 0x3 r14 0xffff800000689000 r15 0xffff800000eb3a80 rip 0xffffffff816a3200 igmp_leavegroup+0x80 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022e57cc0 ss 0x10 igmp_leavegroup+0x80: movl 0x4(%rax),%r12d ddb{0}> show proc PROC (syz-executor.5) pid=422373 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002121f260,0xffff80002121e550 process=0xffff80002e3b0020 user=0xffff800022e53000, vmspace=0xfffffd805dbb9310 estcpu=33, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82521 296810 35339 0 2 0 syz-executor.0 80018 66172 16595 0 2 0 syz-executor.3 80018 45250 16595 0 3 0x4000080 fsleep syz-executor.3 80018 178542 16595 0 2 0x4000000 syz-executor.3 71368 319971 23222 0 2 0 syz-executor.2 71368 73356 23222 0 3 0x4000080 fsleep syz-executor.2 44996 194531 45554 0 2 0 syz-executor.1 44996 85021 45554 0 3 0x4000080 fsleep syz-executor.1 58270 4282 42756 0 2 0 syz-executor.4 58270 288941 42756 0 3 0x4000080 fsleep syz-executor.4 23222 143315 67079 0 3 0x82 nanoslp syz-executor.2 31162 210039 1 0 3 0x100083 ttyin getty 42756 396624 67079 0 3 0x82 nanoslp syz-executor.4 15155 386910 67079 0 2 0x2 syz-executor.6 35339 414495 67079 0 3 0x82 nanoslp syz-executor.0 16595 119668 67079 0 3 0x82 nanoslp syz-executor.3 115 90108 67079 0 3 0x82 nanoslp syz-executor.7 99294 297883 67079 0 3 0x82 nanoslp syz-executor.5 45554 288930 67079 0 3 0x82 nanoslp syz-executor.1 4042 449217 0 0 3 0x14280 nfsidl nfsio 18664 383841 0 0 3 0x14280 nfsidl nfsio 50179 182626 0 0 3 0x14280 nfsidl nfsio 170 49887 0 0 3 0x14280 nfsidl nfsio 63753 310564 0 0 3 0x14280 nfsidl nfsio 30198 367218 0 0 3 0x14280 nfsidl nfsio 74425 391186 0 0 3 0x14280 nfsidl nfsio 96821 322000 0 0 3 0x14280 nfsidl nfsio 37091 485193 0 0 3 0x14280 nfsidl nfsio 58261 449974 0 0 3 0x14280 nfsidl nfsio 35038 210439 0 0 3 0x14280 nfsidl nfsio 58051 136587 0 0 3 0x14280 nfsidl nfsio 64669 239667 0 0 3 0x14280 nfsidl nfsio 13787 165246 0 0 3 0x14280 nfsidl nfsio 93390 176745 0 0 3 0x14280 nfsidl nfsio 41610 342200 0 0 3 0x14280 nfsidl nfsio 39138 439451 0 0 3 0x14280 nfsidl nfsio 71907 368596 0 0 3 0x14280 nfsidl nfsio 81148 314493 0 0 3 0x14280 nfsidl nfsio 28691 459952 0 0 3 0x14280 nfsidl nfsio 9410 517654 0 0 3 0x14200 bored sosplice 67079 399972 9725 0 3 0x82 thrsleep syz-fuzzer 67079 47667 9725 0 3 0x4000082 nanoslp syz-fuzzer 67079 444655 9725 0 3 0x4000082 thrsleep syz-fuzzer 67079 404110 9725 0 3 0x4000082 nanoslp syz-fuzzer 67079 137577 9725 0 3 0x4000082 thrsleep syz-fuzzer 67079 203412 9725 0 2 0x4000002 syz-fuzzer 67079 76973 9725 0 3 0x4000082 thrsleep syz-fuzzer 67079 307339 9725 0 3 0x4000082 thrsleep syz-fuzzer 67079 278298 9725 0 3 0x4000082 thrsleep syz-fuzzer 9725 33197 66770 0 3 0x10008a sigsusp ksh 66770 182539 3608 0 2 0x12 sshd 3608 502219 1 0 3 0x88 kqread sshd 48598 402805 80022 74 3 0x1100092 bpf pflogd 80022 219265 1 0 3 0x80 netio pflogd 25255 164414 15880 73 3 0x1100090 kqread syslogd 15880 440400 1 0 3 0x100082 netio syslogd 93540 399406 1 0 3 0x100080 kqread resolvd 32067 522471 68845 77 3 0x100092 kqread dhcpleased 30418 436974 68845 77 3 0x100092 kqread dhcpleased 68845 294020 1 0 3 0x80 kqread dhcpleased 77681 216403 0 0 3 0x14200 bored smr 47126 462654 0 0 2 0x14200 zerothread 51335 191806 0 0 3 0x14200 aiodoned aiodoned 58844 247734 0 0 3 0x14200 syncer update 17312 234068 0 0 3 0x14200 cleaner cleaner 50883 165490 0 0 3 0x14200 reaper reaper 85849 173166 0 0 3 0x14200 pgdaemon pagedaemon 79440 39359 0 0 3 0x14200 bored viomb 32872 375778 0 0 3 0x40014200 acpi0 acpi0 1178 80219 0 0 7 0x40014200 idle1 82956 2478 0 0 2 0x14200 softnet 10744 206187 0 0 3 0x14200 bored systqmp 31680 64025 0 0 3 0x14200 bored systq 66537 34168 0 0 3 0x40014200 bored softclock 86581 474815 0 0 3 0x40014200 idle0 1 361845 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 10237 6582K 7158K 78643K 52221 0 pcb 14 20K 25K 78643K 3695 0 rtable 234 19K 26K 78643K 6346 0 ifaddr 97 26K 30K 78643K 2766 0 sysctl 3 1K 4K 78643K 9 0 counters 56 35K 36K 78643K 550 0 ioctlops 0 0K 8K 78643K 6152 0 iov 0 0K 28K 78643K 2368 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1480 92K 93K 78643K 22263 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 189 0 VM map 2 1K 1K 78643K 2 0 sem 18 16K 26K 78643K 955 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 85K 78643K 20323 0 sigio 0 0K 0K 78643K 230 0 proc 72 87K 124K 78643K 3651 0 subproc 104 6K 7K 78643K 1144 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 1067 0 in_multi 78 5K 6K 78643K 1660 0 ether_multi 1 0K 0K 78643K 437 0 mrt 2 0K 0K 78643K 617 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 277 1235K 1235K 78643K 277 0 exec 0 0K 2K 78643K 4558 0 pfkey data 0 0K 0K 78643K 67 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 659 1344K 1348K 78643K 247772 0 UVM aobj 131 5K 5K 78643K 152 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1230 0 NDP 14 0K 1K 78643K 478 0 temp 161 4747K 8841K 78643K 352417 0 kqueue 12 18K 28K 78643K 1520 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 1233 0 1230 16 15 1 5 0 8 0 rtentry 112 1385 0 1291 5 1 4 4 0 8 0 unpcb 136 14528 0 14513 177 174 3 10 0 8 2 syncache 296 23 0 23 7 7 0 1 0 8 0 tcpqe 32 81 0 81 4 4 0 1 0 8 0 tcpcb 736 6910 0 6900 311 306 5 14 0 8 4 arp 120 196 0 176 1 0 1 1 0 8 0 inpcb 304 18596 0 18586 356 352 4 14 0 8 3 rttmr 72 78 0 78 5 5 0 1 0 8 0 ip6q 72 5 0 5 1 1 0 1 0 8 0 ip6af 40 10 0 10 1 1 0 1 0 8 0 nd6 48 315 0 296 1 0 1 1 0 8 0 pkpcb 40 120 0 120 13 13 0 1 0 8 0 kcovpl 48 88 0 80 1 0 1 1 0 8 0 ppxss 1248 88 0 88 16 16 0 1 0 8 0 pfstscr 40 76 0 76 9 9 0 1 0 8 0 pffrag 232 160 0 158 16 15 1 1 0 482 0 pffrnode 88 160 0 158 16 15 1 1 0 8 0 pffrent 40 781 0 779 17 16 1 1 0 8 0 pfosfp 40 1502 0 1502 5 5 0 5 0 8 0 pfosfpen 112 1502 0 1502 21 21 0 21 0 8 0 pfrktable 1344 1049 0 1042 8 7 1 2 0 8 0 pftag 88 23 0 19 1 0 1 1 0 8 0 pfqueue 264 7 0 7 2 2 0 1 0 8 0 pfstitem 24 43 0 41 1 0 1 1 0 8 0 pfstkey 112 187 0 185 1 0 1 1 0 8 0 pfstate 320 110 0 108 2 1 1 2 0 8 0 pfrule 1360 1317 0 1300 21 19 2 9 0 8 0 art_heap8 4096 5 0 4 5 3 2 3 0 8 1 art_heap4 256 7340 0 6994 52 25 27 31 0 8 0 art_table 32 7345 0 6998 4 0 4 4 0 8 0 art_node 16 1363 0 1283 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 943 0 927 1 0 1 1 0 8 0 shmpl 112 149 0 21 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 36396 0 34887 95 0 95 95 0 8 0 ffsino 272 36396 0 34887 101 0 101 101 0 8 0 nchpl 144 64751 0 63121 63 0 63 63 0 8 0 uvmvnodes 80 7633 0 0 156 0 156 156 0 8 0 vnodes 224 7633 0 0 449 0 449 449 0 8 0 namei 1024 255441 0 255441 5 4 1 2 0 8 1 percpumem 16 287 0 247 1 0 1 1 0 8 0 vcpupl 2048 229 0 1 29 0 29 29 0 8 0 vmpool 560 333 0 105 17 0 17 17 0 8 0 pfiaddrpl 120 388 0 378 5 4 1 2 0 8 0 scsiplug 72 16 0 16 5 5 0 1 0 8 0 scxspl 216 170770 0 170770 27 26 1 8 0 8 1 plimitpl 152 2583 0 2567 1 0 1 1 0 8 0 sigapl 424 20508 0 20443 8 0 8 8 0 8 0 futexpl 64 201338 0 201334 5 4 1 1 0 8 0 knotepl 120 1176 0 0 15 5 10 11 0 8 0 kqueuepl 216 5571 0 5563 88 87 1 10 0 8 0 pipepl 336 5342 0 5314 156 153 3 14 0 8 0 fdescpl 496 20471 0 20441 9 5 4 5 0 8 0 filepl 152 178076 0 177826 363 350 13 27 0 8 2 lockfpl 104 4993 0 4991 10 9 1 2 0 8 0 lockfspl 48 1483 0 1481 1 0 1 1 0 8 0 sessionpl 144 112 0 95 1 0 1 1 0 8 0 pgrppl 48 229 0 212 1 0 1 1 0 8 0 ucredpl 96 53032 0 53015 1 0 1 1 0 8 0 zombiepl 144 20445 0 20443 1 0 1 1 0 8 0 processpl 1064 20508 0 20443 5 0 5 5 0 8 0 procpl 672 51475 0 51397 23 14 9 9 0 8 1 srpgc 96 77 0 77 22 22 0 1 0 8 0 sosppl 168 156 0 156 33 33 0 1 0 8 0 sockpl 480 34524 0 34496 955 942 13 38 0 8 9 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 15 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 356 0 0 25 0 25 25 0 8 0 mtagpl 96 1491 0 0 12 2 10 12 0 8 0 mbufpl 256 1991 0 0 58 1 57 57 0 8 0 bufpl 288 38920 0 31287 546 0 546 546 0 8 0 anonpl 24 5864137 0 5839767 523 362 161 194 0 186 0 amapchunkpl 152 616692 0 615737 206 161 45 63 0 158 5 amappl16 200 67342 0 66338 338 279 59 68 0 8 0 amappl15 192 2885 0 2877 1 0 1 1 0 8 0 amappl14 184 1494 0 1487 1 0 1 1 0 8 0 amappl13 176 2023 0 2019 1 0 1 1 0 8 0 amappl12 168 1893 0 1892 3 2 1 1 0 8 0 amappl11 160 2223 0 2202 2 1 1 2 0 8 0 amappl10 152 3478 0 3466 1 0 1 1 0 8 0 amappl9 144 4149 0 4146 1 0 1 1 0 8 0 amappl8 136 6026 0 5860 7 1 6 6 0 8 0 amappl7 128 3910 0 3896 1 0 1 1 0 8 0 amappl6 120 4133 0 4104 5 3 2 2 0 8 0 amappl5 112 20296 0 20273 1 0 1 1 0 8 0 amappl4 104 6639 0 6603 2 0 2 2 0 8 0 amappl3 96 3945 0 3934 1 0 1 1 0 8 0 amappl2 88 4750 0 4694 3 1 2 3 0 8 0 amappl1 80 359529 0 358936 29 15 14 19 0 8 0 amappl 88 245593 0 245240 9 0 9 9 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 72 151 0 21 3 0 3 3 0 8 0 uaddrrnd 24 20804 0 20546 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 20804 0 20546 2 0 2 2 0 8 0 vmmpekpl 168 143189 0 143087 5 0 5 5 0 8 0 vmmpepl 168 1876955 0 1873442 714 545 169 190 0 357 0 vmsppl 368 20803 0 20546 28 4 24 24 0 8 0 rwobjpl 56 448147 0 438190 181 39 142 144 0 8 0 pdppl 4096 41615 0 41320 1547 1250 297 297 0 8 2 pvpl 32 9809211 0 9785489 806 586 220 301 0 265 0 pmappl 248 20803 0 20546 18 1 17 17 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2992 0 1767 36 0 36 36 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace igmp_leavegroup(ffff800000eb3a80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000eb3a80) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c21570) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f681e40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 udp_detach(fffffd806e2081f8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1249 soclose(fffffd806e2081f8,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd806c525d28,ffff80002121f7a0) at soo_close+0x40 fdrop(fffffd806c525d28,ffff80002121f7a0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806c525d28,ffff80002121f7a0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002121f7a0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002121f7a0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff80002121f7a0,ffff800022e58070,ffff800022e580d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022e58140) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022e58140) 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