uvm_fault(0xfffffd8069c313b8, 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(ffff800000d208c0,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d208c0) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000dd6810) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd8069710020) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8078fb8210) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8078fb8210,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8078fb8210,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd8078f0abf0,ffff8000211f2da8) at soo_close+0x44 fdrop(fffffd8078f0abf0,ffff8000211f2da8) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd8078f0abf0,ffff8000211f2da8) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff8000211f2da8) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff8000211f2da8,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff8000211f2da8,ffff80002470b5b0,ffff80002470b600) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002470b680) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002470b680) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c823be9fbd0, 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(0xfffffd8069c313b8, 0x4, 0, 1) -> e ddb{0}> trace igmp_leavegroup(ffff800000d208c0,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d208c0) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000dd6810) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd8069710020) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8078fb8210) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8078fb8210,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8078fb8210,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd8078f0abf0,ffff8000211f2da8) at soo_close+0x44 fdrop(fffffd8078f0abf0,ffff8000211f2da8) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd8078f0abf0,ffff8000211f2da8) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff8000211f2da8) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff8000211f2da8,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff8000211f2da8,ffff80002470b5b0,ffff80002470b600) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002470b680) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002470b680) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c823be9fbd0, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002470b240 rbx 0xd rdx 0 rcx 0x1 rax 0 r8 0 r9 0 r10 0xd4c48785c2215c77 r11 0x52dd3bd35f793bf1 r12 0 r13 0x3 r14 0xffff800000d208c0 r15 0xffff8000006b8000 rip 0xffffffff81ee7b0f igmp_leavegroup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002470b210 ss 0x10 igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d ddb{0}> show proc PROC (syz-executor.7) pid=320975 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff800021234b40,0xffffffff82d7a790 process=0xffff8000ffffa5b8 user=0xffff800024706000, vmspace=0xfffffd8069c313b8 estcpu=34, cpticks=0, pctcpu=0.2 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54562 448278 89616 0 3 0x82 nanoslp syz-executor.7 64863 510982 89616 0 3 0x82 piperd syz-executor.3 50510 73541 89616 0 3 0x82 piperd syz-executor.2 52123 176473 0 0 3 0x14280 nfsidl nfsio 29041 128249 0 0 3 0x14280 nfsidl nfsio 64395 378545 0 0 3 0x14280 nfsidl nfsio 21617 451473 0 0 3 0x14280 nfsidl nfsio 9219 315609 0 0 3 0x14280 nfsidl nfsio 44862 415941 0 0 3 0x14280 nfsidl nfsio 9234 472804 0 0 3 0x14280 nfsidl nfsio 49688 26508 0 0 3 0x14280 nfsidl nfsio 11852 275857 0 0 3 0x14280 nfsidl nfsio 71516 105953 0 0 3 0x14280 nfsidl nfsio 562 517792 0 0 3 0x14280 nfsidl nfsio 51136 207778 0 0 3 0x14280 nfsidl nfsio 99822 383915 0 0 3 0x14280 nfsidl nfsio 67501 302994 0 0 3 0x14280 nfsidl nfsio 5705 245742 0 0 3 0x14280 nfsidl nfsio 74242 307455 0 0 3 0x14280 nfsidl nfsio 64786 59902 0 0 3 0x14280 nfsidl nfsio 15782 358075 0 0 3 0x14280 nfsidl nfsio 54940 286055 0 0 3 0x14280 nfsidl nfsio 11434 46590 0 0 3 0x14280 nfsidl nfsio 95892 407730 89616 0 3 0x82 nanoslp syz-executor.4 802 341687 89616 0 3 0x82 piperd syz-executor.6 86126 407203 0 0 3 0x14200 bored sosplice 36378 171351 89616 0 3 0x82 piperd syz-executor.5 30079 407046 89616 0 3 0x82 piperd syz-executor.1 82990 467345 89616 0 3 0x82 piperd syz-executor.0 89616 504563 98726 0 3 0x82 thrsleep syz-fuzzer 89616 54908 98726 0 3 0x4000082 thrsleep syz-fuzzer 89616 153121 98726 0 3 0x4000082 wait syz-fuzzer 89616 404158 98726 0 3 0x4000082 kqread syz-fuzzer 89616 517098 98726 0 3 0x4000082 wait syz-fuzzer 89616 407403 98726 0 3 0x4000082 wait syz-fuzzer 89616 293707 98726 0 3 0x4000082 thrsleep syz-fuzzer 89616 318595 98726 0 3 0x4000082 wait syz-fuzzer 89616 136976 98726 0 3 0x4000082 wait syz-fuzzer 89616 523914 98726 0 3 0x4000082 thrsleep syz-fuzzer 89616 140014 98726 0 3 0x4000082 thrsleep syz-fuzzer 89616 455896 98726 0 3 0x4000082 wait syz-fuzzer 89616 478073 98726 0 3 0x4000082 wait syz-fuzzer 89616 285832 98726 0 3 0x4000082 thrsleep syz-fuzzer 89616 330124 98726 0 3 0x4000082 thrsleep syz-fuzzer 89616 32542 98726 0 3 0x4000082 wait syz-fuzzer 98726 62368 93652 0 3 0x10008a sigsusp ksh 93652 107286 11173 0 3 0x9a kqread sshd 48536 276880 1 0 3 0x100083 ttyin getty 11173 275952 1 0 3 0x88 kqread sshd 14762 154580 91318 74 3 0x1100092 bpf pflogd 91318 277233 1 0 3 0x80 netio pflogd 31113 426385 51549 73 2 0x1100010 syslogd 51549 13723 1 0 3 0x100082 netio syslogd 94596 313950 1 0 3 0x100080 kqread resolvd 91409 211415 0 0 3 0x14200 bored smr 56264 443676 0 0 2 0x14200 zerothread 30960 140822 0 0 3 0x14200 aiodoned aiodoned 65684 319786 0 0 3 0x14200 syncer update 35535 505666 0 0 3 0x14200 cleaner cleaner 52141 370953 0 0 3 0x14200 reaper reaper 4280 365538 0 0 3 0x14200 pgdaemon pagedaemon 25791 494163 0 0 3 0x14200 bored viomb 93884 155763 0 0 3 0x40014200 acpi0 acpi0 75302 45249 0 0 7 0x40014200 idle1 19524 452083 0 0 3 0x14200 bored softnet3 472 31724 0 0 3 0x14200 bored softnet2 74568 393682 0 0 3 0x14200 bored softnet1 10556 195640 0 0 3 0x14200 bored softnet0 84661 159453 0 0 3 0x14200 bored systqmp 22291 414394 0 0 3 0x14200 bored systq 62725 333173 0 0 3 0x40014200 bored softclock 45911 158880 0 0 3 0x40014200 idle0 1 149334 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 31113 (syslogd) thread 0xffff8000211ad880 (426385) exclusive rrwlock inode r = 0 (0xfffffd806e7720a0) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0xf9 sys/kern/vfs_syscalls.c:2897 #6 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #6 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 6475K 6745K 78643K 12851 0 pcb 13 16K 21K 78643K 554 0 rtable 206 15K 18K 78643K 872 0 ifaddr 78 25K 26K 78643K 356 0 sysctl 2 0K 0K 78643K 2 0 counters 58 35K 36K 78643K 426 0 ioctlops 0 0K 4K 78643K 1786 0 iov 0 0K 16K 78643K 535 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1406 88K 88K 78643K 2812 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 41 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 16 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 11 37K 81K 78643K 3690 0 sigio 0 0K 0K 78643K 18 0 proc 64 67K 128K 78643K 903 0 subproc 104 6K 6K 78643K 202 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 4 0K 1K 78643K 1993 0 in_multi 90 6K 7K 78643K 589 0 ether_multi 1 0K 0K 78643K 33 0 mrt 1 0K 0K 78643K 25 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 211 943K 943K 78643K 211 0 exec 0 0K 1K 78643K 967 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 315 87K 101K 78643K 37828 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 143 0 NDP 13 0K 2K 78643K 109 0 temp 133 5866K 71530K 78643K 25172 0 kqueue 6 10K 24K 78643K 289 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 120 272 0 271 4 3 1 3 0 8 0 rtentry 112 268 0 180 4 0 4 4 0 8 0 unpcb 144 3429 0 3421 39 38 1 10 0 8 0 syncache 296 25 0 25 6 6 0 1 0 8 0 tcpqe 32 75 0 75 1 1 0 1 0 8 0 tcpcb 776 1220 0 1150 41 34 7 8 0 8 0 arp 120 43 0 27 1 0 1 1 0 8 0 inpcb 368 5274 0 5268 73 62 11 20 0 8 8 nd6 136 49 0 27 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 1 0 1 0 8 0 ppxss 1256 144 0 144 7 7 0 1 0 8 0 pppxif 1456 44 0 44 4 4 0 1 0 8 0 pffrag 232 55 0 54 1 0 1 1 0 482 0 pffrnode 88 55 0 54 1 0 1 1 0 8 0 pffrent 40 174 0 173 1 0 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 376 0 125 27 4 23 27 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 52 0 50 1 0 1 1 0 8 0 pfstkey 128 52 0 50 2 1 1 2 0 8 0 pfstate 384 52 0 50 4 3 1 4 0 8 0 pfrule 1344 21 0 20 2 1 1 2 0 8 0 rttmr 136 6 0 6 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1230 0 813 41 12 29 33 0 8 2 art_table 32 1231 0 813 5 0 5 5 0 8 0 art_node 16 259 0 182 1 0 1 1 0 8 0 sysvmsgpl 40 44 0 27 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 8 0 0 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 6097 0 4646 92 0 92 92 0 8 0 ffsino 272 6097 0 4646 98 0 98 98 0 8 0 nchpl 144 11032 0 9384 63 0 63 63 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 35812 0 35812 5 4 1 2 0 8 1 percpumem 16 226 0 184 1 0 1 1 0 8 0 kstatmem 264 154 0 128 2 0 2 2 0 8 0 scsiplug 72 4 0 4 2 2 0 1 0 8 0 scxspl 216 33563 0 33563 13 12 1 8 0 8 1 plimitpl 152 536 0 521 1 0 1 1 0 8 0 sigapl 424 4039 0 3979 10 2 8 8 0 8 0 futexpl 64 37470 0 37470 2 1 1 1 0 8 1 knotepl 120 366 0 0 9 0 9 9 0 8 0 kqueuepl 216 785 0 780 17 16 1 5 0 8 0 pipepl 320 1561 0 1532 24 21 3 8 0 8 0 fdescpl 496 3981 0 3960 5 0 5 5 0 8 0 filepl 152 26532 0 26308 60 46 14 19 0 8 2 lockfpl 104 812 0 811 3 2 1 2 0 8 0 lockfspl 48 174 0 173 1 0 1 1 0 8 0 sessionpl 144 31 0 15 1 0 1 1 0 8 0 pgrppl 48 117 0 101 1 0 1 1 0 8 0 ucredpl 104 2780 0 2771 1 0 1 1 0 8 0 zombiepl 144 3981 0 3979 1 0 1 1 0 8 0 processpl 1072 4039 0 3979 6 1 5 5 0 8 0 procpl 696 10150 0 10075 17 8 9 10 0 8 0 srpgc 96 8 0 8 4 4 0 1 0 8 0 sosppl 168 46 0 46 5 4 1 1 0 8 1 sockpl 488 8983 0 8968 168 151 17 34 0 8 12 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 13 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 13 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 425 0 0 53 2 51 53 0 8 0 mtagpl 96 15 0 0 1 0 1 1 0 8 0 mbufpl 256 414 0 0 26 0 26 26 0 8 0 bufpl 288 8968 0 2654 452 0 452 452 0 8 0 anonpl 24 507193 0 492436 154 30 124 124 0 186 15 amapchunkpl 152 120216 0 119417 61 11 50 51 0 158 8 amappl16 200 11009 0 10542 65 38 27 38 0 8 0 amappl15 192 16 0 16 1 1 0 1 0 8 0 amappl14 184 199 0 186 2 0 2 2 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 4754 0 4732 3 1 2 2 0 8 0 amappl11 160 83 0 75 1 0 1 1 0 8 0 amappl10 152 46 0 35 1 0 1 1 0 8 0 amappl9 144 177 0 176 2 1 1 2 0 8 0 amappl8 136 298 0 220 3 0 3 3 0 8 0 amappl7 128 72 0 52 1 0 1 1 0 8 0 amappl6 120 331 0 310 2 1 1 2 0 8 0 amappl5 112 231 0 224 1 0 1 1 0 8 0 amappl4 104 792 0 748 3 1 2 3 0 8 0 amappl3 96 23607 0 23549 4 1 3 3 0 8 0 amappl2 88 4338 0 4291 3 1 2 3 0 8 0 amappl1 80 23377 0 22930 23 10 13 23 0 8 0 amappl 88 37163 0 36969 8 1 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 3982 0 3961 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3982 0 3961 1 0 1 1 0 8 0 vmmpekpl 168 37864 0 37812 3 0 3 3 0 8 0 vmmpepl 168 251775 0 249828 216 99 117 145 0 357 8 vmsppl 464 3981 0 3961 5 1 4 5 0 8 0 rwobjpl 56 71928 0 64464 115 6 109 111 0 8 0 pdppl 4096 7972 0 7922 270 206 64 80 0 8 14 pvpl 32 1286447 0 1266877 444 202 242 359 0 265 50 pmappl 248 3981 0 3961 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1136 0 296 25 0 25 25 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace igmp_leavegroup(ffff800000d208c0,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d208c0) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000dd6810) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd8069710020) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd8078fb8210) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd8078fb8210,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd8078fb8210,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd8078f0abf0,ffff8000211f2da8) at soo_close+0x44 fdrop(fffffd8078f0abf0,ffff8000211f2da8) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd8078f0abf0,ffff8000211f2da8) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff8000211f2da8) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff8000211f2da8,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff8000211f2da8,ffff80002470b5b0,ffff80002470b600) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002470b680) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002470b680) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c823be9fbd0, 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