€ uvm_fault(0xfffffd8068360d00, 0x4, 0, 1) -> e kernel: page fault trap, code=0 Stopped at igmp_leavegroup+0x81: movl 0x4(%rax),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd8068360d00, 0x4, 0, 1) -> e igmp_leavegroup(ffff800000a262c0) at igmp_leavegroup+0x81 sys/netinet/igmp.c:533 end trace frame: 0xffff800023173080, count: 0 ddb{1}> trace igmp_leavegroup(ffff800000a262c0) at igmp_leavegroup+0x81 sys/netinet/igmp.c:533 in_delmulti(ffff800000a262c0) at in_delmulti+0xb8 sys/netinet/in.c:920 ip_freemoptions(ffff80000002d4a0) at ip_freemoptions+0x63 sys/netinet/ip_output.c:1686 in_pcbdetach(fffffd806f6e47a8) at in_pcbdetach+0xf4 sys/netinet/in_pcb.c:575 udp_detach(fffffd8067ae3818) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1248 soclose(fffffd8067ae3818,0) at soclose+0xb2 sys/kern/uipc_socket.c:328 soo_close(fffffd8066a85c90,ffff800020ed8768) at soo_close+0x40 fdrop(fffffd8066a85c90,ffff800020ed8768) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8066a85c90,ffff800020ed8768) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020ed8768) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020ed8768,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020ed8768,ffff8000231733a0,ffff8000231733f0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023173470) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023173470) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff16a0, count: -14 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800023173010 rbx 0 rdx 0xffff800020ed8768 rcx 0 rax 0 r8 0xffffffff821a01e2 sounlock+0x32 r9 0x5 r10 0x42 r11 0xa2c5c99d6873a714 r12 0 r13 0x3 r14 0xffff800000679800 r15 0xffff800000a262c0 rip 0xffffffff81412f61 igmp_leavegroup+0x81 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023172fe0 ss 0x10 igmp_leavegroup+0x81: movl 0x4(%rax),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=181618 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800020ed8018,0xffffffff8266d478 process=0xffff800020ecf738 user=0xffff80002316e000, vmspace=0xfffffd8068360d00 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54083 55876 0 0 3 0x14200 acct acct 43631 421690 0 0 3 0x14200 bored sosplice 46908 438528 9074 0 3 0x82 nanosleep syz-executor.1 4065 42168 9074 0 3 0x82 piperd syz-executor.0 9074 401330 70553 0 3 0x82 thrsleep syz-fuzzer 9074 13367 70553 0 3 0x4000082 nanosleep syz-fuzzer 9074 210890 70553 0 3 0x4000082 thrsleep syz-fuzzer 9074 48652 70553 0 3 0x4000082 kqread syz-fuzzer 9074 133554 70553 0 7 0x4000002 syz-fuzzer 9074 202426 70553 0 3 0x4000082 thrsleep syz-fuzzer 9074 148174 70553 0 3 0x4000082 thrsleep syz-fuzzer 9074 234099 70553 0 3 0x4000082 thrsleep syz-fuzzer 9074 382151 70553 0 3 0x4000082 thrsleep syz-fuzzer 9074 230977 70553 0 3 0x4000082 thrsleep syz-fuzzer 70553 408996 66228 0 3 0x10008a pause ksh 66228 30309 58100 0 3 0x92 select sshd 65887 513903 1 0 3 0x100083 ttyin getty 58100 280151 1 0 3 0x80 select sshd 52921 245409 90166 74 3 0x100092 bpf pflogd 90166 408895 1 0 3 0x80 netio pflogd 19615 123777 40105 73 3 0x100090 kqread syslogd 40105 431142 1 0 3 0x100082 netio syslogd 2305 483962 1 77 3 0x100090 poll dhclient 62579 176264 1 0 3 0x80 poll dhclient 5980 78466 0 0 3 0x14200 bored smr 15012 121095 0 0 2 0x14200 zerothread 93569 397994 0 0 3 0x14200 aiodoned aiodoned 16476 342685 0 0 3 0x14200 syncer update 24101 225674 0 0 3 0x14200 cleaner cleaner 65269 19663 0 0 3 0x14200 reaper reaper 66476 168363 0 0 3 0x14200 pgdaemon pagedaemon 8377 42903 0 0 3 0x14200 bored crynlk 24592 181359 0 0 3 0x14200 bored crypto 30288 399292 0 0 3 0x40014200 acpi0 acpi0 49353 79467 0 0 3 0x40014200 idle1 50184 296462 0 0 3 0x14200 bored softnet 64909 99399 0 0 3 0x14200 bored systqmp 2134 73226 0 0 3 0x14200 bored systq 14186 308159 0 0 3 0x40014200 bored softclock 27675 148081 0 0 3 0x40014200 idle0 1 120965 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9541 6439K 6818K 78643K 12374 0 pcb 13 8K 8K 78643K 215 0 rtable 84 11K 12K 78643K 473 0 ifaddr 114 23K 24K 78643K 208 0 counters 43 33K 34K 78643K 71 0 ioctlops 0 0K 4K 78643K 1528 0 iov 0 0K 16K 78643K 134 0 mount 1 1K 1K 78643K 1 0 vnodes 1230 77K 78K 78643K 1859 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 16 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 126 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 993 0 sigio 0 0K 0K 78643K 6 0 proc 61 63K 95K 78643K 538 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 96 0 in_multi 144 5K 5K 78643K 282 0 ether_multi 1 0K 0K 78643K 34 0 mrt 0 0K 0K 78643K 13 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 248 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 138 88K 88K 78643K 3848 0 UVM aobj 41 4K 4K 78643K 44 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 201 0 NDP 14 0K 0K 78643K 39 0 temp 126 3043K 3107K 78643K 6291 0 kqueue 3 4K 16K 78643K 23 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 89 0 85 1 0 1 1 0 8 0 rtentry 112 89 0 61 2 0 2 2 0 8 0 unpcb 120 1171 0 1161 1 0 1 1 0 8 0 syncache 264 10 0 10 3 2 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 544 327 0 318 1 0 1 1 0 8 0 ipq 40 4 0 4 2 2 0 1 0 8 0 ipqe 40 8 0 8 2 2 0 1 0 8 0 inpcb 280 1095 0 1078 10 8 2 2 0 8 0 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 15 0 14 1 0 1 1 0 8 0 pkpcb 40 7 0 7 4 4 0 1 0 8 0 ppxss 1128 4 0 4 4 4 0 1 0 8 0 pffrag 232 13 0 13 6 6 0 1 0 482 0 pffrnode 88 13 0 13 6 6 0 1 0 8 0 pffrent 40 199 0 199 6 6 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 118 0 86 1 0 1 1 0 8 0 pfstkey 112 118 0 86 1 0 1 1 0 8 0 pfstate 328 118 0 85 5 2 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 466 0 343 15 7 8 13 0 8 0 art_table 32 467 0 343 2 0 2 2 0 8 0 art_node 16 86 0 62 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 122 0 112 1 0 1 1 0 8 0 shmpl 112 42 0 3 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3159 0 1753 89 0 89 89 0 8 0 ffsino 272 3159 0 1753 95 1 94 95 0 8 0 nchpl 144 4909 0 3312 60 0 60 60 0 8 0 uvmvnodes 72 3540 0 0 65 0 65 65 0 8 0 vnodes 208 3540 0 0 187 0 187 187 0 8 0 namei 1024 16003 0 16003 1 0 1 1 0 8 1 percpumem 16 46 0 14 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 560 12 0 4 2 1 1 1 0 8 0 scxspl 192 13248 0 13248 17 14 3 7 0 8 3 plimitpl 152 86 0 78 1 0 1 1 0 8 0 sigapl 424 1210 0 1177 4 0 4 4 0 8 0 futexpl 56 26846 0 26846 1 0 1 1 0 8 1 knotepl 112 89 0 70 1 0 1 1 0 8 0 kqueuepl 144 133 0 130 1 0 1 1 0 8 0 pipelkpl 48 223 0 213 1 0 1 1 0 8 0 pipepl 120 446 0 427 2 1 1 2 0 8 0 fdescpl 496 1193 0 1177 3 0 3 3 0 8 0 filepl 152 8794 0 8686 9 4 5 6 0 8 0 lockfpl 104 235 0 234 1 0 1 1 0 8 0 lockfspl 48 93 0 92 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 8 1 0 1 1 0 8 0 ucredpl 96 653 0 644 1 0 1 1 0 8 0 zombiepl 144 1178 0 1177 1 0 1 1 0 8 0 processpl 984 1210 0 1177 6 1 5 5 0 8 0 procpl 624 3015 0 2973 4 0 4 4 0 8 0 sosppl 128 20 0 20 6 5 1 1 0 8 1 sockpl 400 2364 0 2336 10 7 3 7 0 8 0 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 14 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 184 0 0 20 1 19 20 0 8 0 mtagpl 80 86 0 0 2 0 2 2 0 8 0 mbufpl 256 558 0 0 23 0 23 23 0 8 0 bufpl 280 5273 0 137 367 0 367 367 0 8 0 anonpl 16 137420 0 120939 118 47 71 83 0 124 0 amapchunkpl 152 6398 0 6256 29 22 7 20 0 158 0 amappl16 192 6825 0 5889 97 49 48 59 0 8 0 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 875 0 868 1 0 1 1 0 8 0 amappl13 168 26 0 25 1 0 1 1 0 8 0 amappl12 160 14 0 10 1 0 1 1 0 8 0 amappl11 152 55 0 40 1 0 1 1 0 8 0 amappl10 144 17 0 12 1 0 1 1 0 8 0 amappl9 136 493 0 490 1 0 1 1 0 8 0 amappl8 128 461 0 427 2 0 2 2 0 8 0 amappl7 120 116 0 106 1 0 1 1 0 8 0 amappl6 112 28 0 23 1 0 1 1 0 8 0 amappl5 104 1116 0 1100 1 0 1 1 0 8 0 amappl4 96 488 0 460 1 0 1 1 0 8 0 amappl3 88 977 0 971 1 0 1 1 0 8 0 amappl2 80 8686 0 8616 2 0 2 2 0 8 0 amappl1 72 33950 0 33505 23 13 10 18 0 8 0 amappl 80 3292 0 3241 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 43 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1205 0 1181 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1205 0 1181 1 0 1 1 0 8 0 vmmpekpl 168 11881 0 11848 2 0 2 2 0 8 0 vmmpepl 168 150703 0 148591 148 53 95 114 0 357 0 vmsppl 368 1204 0 1181 3 0 3 3 0 8 0 pdppl 4096 2418 0 2370 7 0 7 7 0 8 0 pvpl 32 373413 0 354113 263 102 161 191 0 265 0 pmappl 232 1204 0 1181 3 1 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 282 0 19 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82521ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0xc0015fa580, count: -3 ddb{0}> machine ddbcpu 1 Stopped at igmp_leavegroup+0x81: movl 0x4(%rax),%r12d ddb{1}> trace igmp_leavegroup(ffff800000a262c0) at igmp_leavegroup+0x81 sys/netinet/igmp.c:533 in_delmulti(ffff800000a262c0) at in_delmulti+0xb8 sys/netinet/in.c:920 ip_freemoptions(ffff80000002d4a0) at ip_freemoptions+0x63 sys/netinet/ip_output.c:1686 in_pcbdetach(fffffd806f6e47a8) at in_pcbdetach+0xf4 sys/netinet/in_pcb.c:575 udp_detach(fffffd8067ae3818) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1248 soclose(fffffd8067ae3818,0) at soclose+0xb2 sys/kern/uipc_socket.c:328 soo_close(fffffd8066a85c90,ffff800020ed8768) at soo_close+0x40 fdrop(fffffd8066a85c90,ffff800020ed8768) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8066a85c90,ffff800020ed8768) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020ed8768) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020ed8768,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800020ed8768,ffff8000231733a0,ffff8000231733f0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023173470) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023173470) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff16a0, count: -14