panic: Caught invalid memory access at ffff800001d98b54 size 4 op 0 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND 266525 74064 0 0 0 0 syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84635f88) at panic+0x270 sys/kern/subr_prf.c:198 __asan_load4_noabort(ffff800001d98b54) at __asan_load4_noabort+0xa3 igmp_leavegroup(ffff80000016d080,ffff800001cc8800,ffff800039f13f20) at igmp_leavegroup+0x127 sys/netinet/igmp.c:583 in_delmulti(ffff80000016d080) at in_delmulti+0x10f sys/netinet/in.c:963 ip_freemoptions(ffff80000186aa60) at ip_freemoptions+0x9f sys/netinet/ip_output.c:-1 in_pcbdetach(ffff800001d90548) at in_pcbdetach+0x187 sys/netinet/in_pcb.c:605 rip_detach(ffff8000018f65f0) at rip_detach+0x72 sys/netinet/raw_ip.c:509 soclose(ffff8000018f65f0,0) at soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff8000018f65f0,0) at soclose+0x10a sys/kern/uipc_socket.c:403 soo_close(ffff800001d83a60,ffff80003bb46d20) at soo_close+0x72 sys/kern/sys_socket.c:169 fdrop(ffff800001d83a60,ffff80003bb46d20) at fdrop+0x1c3 sys/kern/kern_descrip.c:1281 closef(ffff800001d83a60,ffff80003bb46d20) at closef+0x263 sys/kern/kern_descrip.c:1265 fdfree(ffff80003bb46d20) at fdfree+0x16d sys/kern/kern_descrip.c:1203 exit1(ffff80003bb46d20,0,0,1) at exit1+0x81e sys/kern/kern_exit.c:217 end trace frame: 0xffff800039f143f0, count: 0 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: Caught invalid memory access at ffff800001d98b54 size 4 op 0 ddb{1}> show kasan KASAN: invalid read of 4 bytes at 0xffff800001d98b54 from pc 0xffffffff829dd8d7 KASAN: first bad byte at 0xffff800001d98b54 (+0); shadow 0xfc: malloc use-after-free KASAN: 0xffff800001d98b54 is 20 bytes inside the 64-byte malloc slot [0xffff800001d98b40..0xffff800001d98b80) KASAN: allocated at: #0 malloc+0xda0 sys/kern/kern_malloc.c:446 #1 rti_fill+0x1ba sys/netinet/igmp.c:184 #2 igmp_joingroup+0x1de sys/netinet/igmp.c:563 #3 in_addmulti+0x667 sys/netinet/in.c:927 #4 ip_setmoptions+0x1534 sys/netinet/ip_output.c:1604 #5 sosetopt+0x19e sys/kern/uipc_socket.c:1899 #6 sys_setsockopt+0x4bd sys/kern/uipc_syscalls.c:1226 #7 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #8 Xsyscall+0x128 KASAN: freed at: #0 dofree+0x632 sys/kern/kern_malloc.c:630 #1 if_setrdomain+0x2f9 sys/net/if.c:2103 #2 ifioctl+0x25ae sys/net/if.c:-1 #3 sys_ioctl+0x868 sys/kern/sys_generic.c:510 #4 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #5 Xsyscall+0x128 KASAN: pc: igmp_leavegroup+0x127 KASAN: call trace: #0 __asan_load4_noabort+0x82 kasan_shadow_check sys/kern/subr_kasan.c:1014 [inline] #0 __asan_load4_noabort+0x82 sys/kern/subr_kasan.c:1098 #1 igmp_leavegroup+0x127 sys/netinet/igmp.c:583 #2 in_delmulti+0x10f sys/netinet/in.c:963 #3 ip_freemoptions+0x9f sys/netinet/ip_output.c:-1 #4 in_pcbdetach+0x187 sys/netinet/in_pcb.c:605 #5 rip_detach+0x72 sys/netinet/raw_ip.c:509 #6 soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline] #6 soclose+0x10a sys/kern/uipc_socket.c:403 #7 soo_close+0x72 sys/kern/sys_socket.c:169 #8 fdrop+0x1c3 sys/kern/kern_descrip.c:1281 #9 closef+0x263 sys/kern/kern_descrip.c:1265 #10 fdfree+0x16d sys/kern/kern_descrip.c:1203 #11 exit1+0x81e sys/kern/kern_exit.c:217 #12 sys_exit+0x4a #13 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 KASAN: shadow of 0xffff800001d98a00..0xffff800001d98c80 (1 cell = 8 bytes): 0xffff800001d98a00: fc 08 fc fc fc fc fc fc fc 08 fc fc fc fc fc fc 0xffff800001d98a80: fc 08 fc fc fc fc fc fc fc 08 fc fc fc fc fc fc >0xffff800001d98b00: fc 08 fc fc fc fc fc fc fc 08[fc]fc fc fc fc fc 0xffff800001d98b80: fc 08 fc fc fc fc fc fc 08 08 08 08 fb fc fc fc 0xffff800001d98c00: 08 08 08 08 fb fc fc fc fc 08 fc fc fc fc fc fc KASAN: legend: 00 valid; 01..07 partial; fb malloc redzone; fc malloc freed; fd pool freed; fe kmem; fa global; f1..f4/f8 stack/scope ddb{1}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84635f88) at panic+0x270 sys/kern/subr_prf.c:198 __asan_load4_noabort(ffff800001d98b54) at __asan_load4_noabort+0xa3 igmp_leavegroup(ffff80000016d080,ffff800001cc8800,ffff800039f13f20) at igmp_leavegroup+0x127 sys/netinet/igmp.c:583 in_delmulti(ffff80000016d080) at in_delmulti+0x10f sys/netinet/in.c:963 ip_freemoptions(ffff80000186aa60) at ip_freemoptions+0x9f sys/netinet/ip_output.c:-1 in_pcbdetach(ffff800001d90548) at in_pcbdetach+0x187 sys/netinet/in_pcb.c:605 rip_detach(ffff8000018f65f0) at rip_detach+0x72 sys/netinet/raw_ip.c:509 soclose(ffff8000018f65f0,0) at soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff8000018f65f0,0) at soclose+0x10a sys/kern/uipc_socket.c:403 soo_close(ffff800001d83a60,ffff80003bb46d20) at soo_close+0x72 sys/kern/sys_socket.c:169 fdrop(ffff800001d83a60,ffff80003bb46d20) at fdrop+0x1c3 sys/kern/kern_descrip.c:1281 closef(ffff800001d83a60,ffff80003bb46d20) at closef+0x263 sys/kern/kern_descrip.c:1265 fdfree(ffff80003bb46d20) at fdfree+0x16d sys/kern/kern_descrip.c:1203 exit1(ffff80003bb46d20,0,0,1) at exit1+0x81e sys/kern/kern_exit.c:217 sys_exit(ffff80003bb46d20,ffff800039f14570,ffff800039f144e0) at sys_exit+0x4a syscall(ffff800039f14570) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039f14570) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d678f2d93f0, count: -17 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800039f13d10 rbx 0xffff800039f13d80 rdx 0 rcx 0xffff800028ff3ff0 rax 0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff800039f13af8 r11 0xffffffff8155f360 x86_bus_space_io_read_1 r12 0xffffffff84635f88 switch.table.pfkeyv2_acquire.11+0x9d2c8 r13 0xffff800028ff4c08 r14 0xffff800028ff4e07 r15 0x1 rip 0xffffffff83abf557 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff800039f13d10 ss 0x10 db_enter+0x17: popq %rbp ddb{1}> show proc PROC (syz-executor) tid=151636 pid=62618 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003bb46d20 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff800045ff42b8,0xffff800045ff5258 process=0xffff80002b2d5368 user=0xffff800039f09000, vmspace=0xffff800001c93b90 estcpu=36, cpticks=37, pctcpu=0.0, user=0, sys=28, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 86094 504800 14224 0 3 0x1000 0x2000 suspend syz-executor 86094 183210 14224 0 2 0x1000 0x4080000 syz-executor 86094 411319 14224 0 2 0x1000 0x4080000 syz-executor 86094 412290 14224 0 2 0x1000 0x4080000 syz-executor 86094 49657 14224 0 2 0x1000 0x4080000 syz-executor 74064 266525 84245 0 7 0 0 syz-executor 74064 20111 84245 0 3 0 0x4000080 kqread syz-executor 74064 183091 84245 0 2 0 0x4000000 syz-executor 90962 474428 44907 0 2 0 0 syz-executor 90962 237461 44907 0 2 0 0x4000000 syz-executor 90962 138006 44907 0 2 0 0x4000000 syz-executor 42414 241280 1 0 3 0x2 0x80 nanoslp getty 85123 303868 23556 0 2 0 0 syz-executor 85123 466615 23556 0 3 0 0x4000080 fsleep syz-executor 85123 472156 23556 0 3 0 0x4000080 fsleep syz-executor 56526 222050 0 0 3 0x14000 0x200 acct acct 46315 419133 0 0 3 0x14000 0x280 nfsidl nfsio 1755 92724 0 0 3 0x14000 0x280 nfsidl nfsio 34945 250833 0 0 3 0x14000 0x280 nfsidl nfsio 13285 97048 0 0 3 0x14000 0x280 nfsidl nfsio 9457 19014 0 0 3 0x14000 0x280 nfsidl nfsio 22963 465848 0 0 3 0x14000 0x280 nfsidl nfsio 33928 312504 0 0 3 0x14000 0x280 nfsidl nfsio 13909 484383 0 0 3 0x14000 0x280 nfsidl nfsio 39429 329100 0 0 3 0x14000 0x280 nfsidl nfsio 92994 258233 0 0 3 0x14000 0x280 nfsidl nfsio 13351 318285 0 0 3 0x14000 0x280 nfsidl nfsio 9158 69421 0 0 3 0x14000 0x280 nfsidl nfsio 61917 84006 0 0 3 0x14000 0x280 nfsidl nfsio 11023 307220 0 0 3 0x14000 0x280 nfsidl nfsio 99502 508471 0 0 3 0x14000 0x280 nfsidl nfsio 26717 72851 0 0 3 0x14000 0x280 nfsidl nfsio 75125 367791 0 0 3 0x14000 0x280 nfsidl nfsio 17550 326538 0 0 3 0x14000 0x280 nfsidl nfsio 80816 459622 0 0 3 0x14000 0x280 nfsidl nfsio 27328 84676 0 0 3 0x14000 0x280 nfsidl nfsio 84245 157719 14192 0 3 0x2 0x80 nanoslp syz-executor 46540 198849 17325 0 3 0x100002 0x80 sbwait arp 17325 429117 12236 0 3 0x100002 0x88 sigsusp sh 23556 916 14192 0 3 0x2 0x80 nanoslp syz-executor 55736 190914 14192 0 3 0x2 0x80 wait syz-executor 42490 347542 14192 0 3 0x2 0x80 nanoslp syz-executor 95236 282273 14192 0 3 0x2 0x80 piperd syz-executor 12236 140214 14192 0 3 0x2 0x80 wait syz-executor 14224 153666 14192 0 3 0x2 0x80 nanoslp syz-executor 44907 67281 14192 0 2 0x2 0 syz-executor 14192 517610 1 0 2 0x2 0 syz-executor 87315 436403 0 0 3 0x14000 0x200 bored smr 89844 363221 0 0 2 0x14000 0x200 zerothread 86205 215209 0 0 3 0x14000 0x200 aiodoned aiodoned 30461 332582 0 0 3 0x14000 0x200 syncer update 4003 446445 0 0 3 0x14000 0x200 cleaner cleaner 54584 452438 0 0 3 0x14000 0x200 reaper reaper 92399 512954 0 0 3 0x14000 0x200 pgdaemon pagedaemon 85977 321751 0 0 3 0x14000 0x200 bored viomb 42654 522374 0 0 3 0x14000 0x40000200 acpi0 acpi0 20290 28717 0 0 3 0x14000 0x40000200 idle1 43012 12371 0 0 3 0x14000 0x200 bored softnet1 76179 438778 0 0 3 0x14000 0x200 bored softnet0 37141 256838 0 0 3 0x14000 0x200 smrbar systqmp 26912 401246 0 0 3 0x14000 0x200 bored systq 28226 9752 0 0 3 0x14000 0x200 tmoslp softclockmp 37586 51288 0 0 3 0x14000 0x40000200 tmoslp softclock 14709 180515 0 0 3 0x14000 0x40000200 idle0 1 153555 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks Process 37141 (systqmp) thread 0xffff800045ffe000 (256838) shared rwlock systqmp r = 0 (0xffffffff84f660b8) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x1ba sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11054 12170K 12470K 166960K 12242 0 pcb 17 28K 30K 166960K 46 0 rtable 209 19K 20K 166960K 383 0 pf 37 23K 25K 166960K 56 0 ifaddr 41 11K 12K 166960K 52 0 ifgroup 59 2K 2K 166960K 69 0 sysctl 1 1K 13K 166960K 5 0 counters 72 43K 43K 166960K 78 0 ioctlops 0 0K 4K 166960K 1501 0 iov 0 0K 16K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 1 0K 0K 166960K 5 0 vnodes 1325 85K 85K 166960K 1480 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 1K 166960K 8 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 17 65K 97K 166960K 261 0 sigio 0 0K 0K 166960K 4 0 proc 19 46K 161K 166960K 597 0 subproc 72 9K 9K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 2 0K 0K 166960K 8 0 in_multi 79 5K 6K 166960K 101 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 55 384K 384K 166960K 55 0 exec 0 0K 2K 166960K 429 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 14 124K 124K 166960K 15 0 UVM amap 132 132K 245K 166960K 4381 0 UVM aobj 7 4K 8K 166960K 8 0 pinsyscall 1045 1733K 1772K 166960K 1438 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 13 0K 1K 166960K 32 0 temp 38 9162K 9182K 166960K 7969 0 kqueue 2 8K 52K 166960K 48 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 28 0 0 1 0 1 1 0 8 0 rtpcb 120 35 0 34 1 0 1 1 0 8 0 rtentry 176 118 0 25 5 0 5 5 0 8 0 unpcb 144 170 0 170 4 0 4 4 0 8 4 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 16 0 15 1 0 1 1 0 8 0 arp 136 20 0 4 1 0 1 1 0 8 0 inpcb 328 225 0 222 7 0 7 7 0 8 5 nd6 152 27 0 8 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 15 0 0 1 0 1 1 0 8 0 pfstkey 128 15 0 0 1 0 1 1 0 8 0 pfstate 448 15 0 0 2 0 2 2 0 8 0 pfrule 1360 24 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 462 0 44 27 0 27 27 0 8 0 art_table 40 463 0 44 5 0 5 5 0 8 0 art_node 32 118 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 72 4 0 1 1 0 1 1 0 8 0 shmpl 112 5 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1771 0 300 93 0 93 93 0 8 0 ffsino 296 1771 0 300 114 0 114 114 0 8 0 nchpl 144 2136 0 428 64 0 64 64 0 8 0 vnodes 216 1950 0 0 109 0 109 109 0 8 0 namei 1024 7111 0 7111 1 0 1 1 0 8 1 percpumem 16 55 0 3 1 0 1 1 0 8 0 kstatmem 264 37 0 6 3 0 3 3 0 8 0 scxspl 216 7589 0 7589 4 3 1 3 1 8 1 plimitpl 152 105 0 95 1 0 1 1 0 8 0 sigapl 424 598 0 541 8 0 8 8 0 8 0 knotepl 120 95 0 0 3 0 3 3 0 8 0 kqueuepl 224 131 0 128 5 0 5 5 0 8 4 pipepl 344 142 0 115 3 0 3 3 0 8 0 fdescpl 528 561 0 541 3 0 3 3 0 8 0 filepl 160 2654 0 2490 15 0 15 15 0 8 3 lockfpl 104 157 0 154 1 0 1 1 0 8 0 lockfspl 48 30 0 27 1 0 1 1 0 8 0 sessionpl 144 31 0 29 1 0 1 1 0 8 0 pgrppl 48 40 0 30 1 0 1 1 0 8 0 ucredpl 104 240 0 236 1 0 1 1 0 8 0 zombiepl 144 543 0 541 1 0 1 1 0 8 0 processpl 1232 598 0 541 6 0 6 6 0 8 0 procpl 664 810 0 743 7 0 7 7 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 752 432 0 428 13 4 9 13 0 8 8 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 134 0 0 17 0 17 17 0 8 0 mcl2k 2048 25 0 0 4 0 4 4 0 8 0 mextrefs 64 27 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 269 0 0 17 0 17 17 0 8 0 bufpl 272 2556 0 109 164 0 164 164 0 8 0 anonpl 32 4540 0 0 37 0 37 37 0 222 0 amapchunkpl 152 12436 0 12102 23 0 23 23 0 158 4 amappl16 200 2055 0 2038 6 3 3 5 0 8 0 amappl15 192 5 0 5 2 2 0 1 0 8 0 amappl14 184 439 0 438 1 0 1 1 0 8 0 amappl13 176 131 0 129 1 0 1 1 0 8 0 amappl12 168 816 0 797 2 0 2 2 0 8 0 amappl11 160 9 0 9 3 2 1 1 0 8 1 amappl10 152 84 0 84 1 0 1 1 0 8 1 amappl9 144 274 0 273 1 0 1 1 0 8 0 amappl8 136 124 0 124 1 0 1 1 0 8 1 amappl7 128 163 0 160 1 0 1 1 0 8 0 amappl6 120 161 0 160 1 0 1 1 0 8 0 amappl5 112 107 0 106 1 0 1 1 0 8 0 amappl4 104 295 0 291 1 0 1 1 0 8 0 amappl3 96 2286 0 2208 4 0 4 4 0 8 1 amappl2 88 546 0 536 2 0 2 2 0 8 0 amappl1 80 10987 0 10840 16 0 16 16 0 8 6 amappl 88 3627 0 3514 5 0 5 5 0 92 0 uvmvnodes 80 104 0 0 3 0 3 3 0 8 0 dma4096 4096 2 0 2 2 1 1 1 0 8 1 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 7 0 1 1 0 1 1 0 8 0 uaddrrnd 24 561 0 541 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 561 0 541 1 0 1 1 0 8 0 vmmpekpl 168 6727 0 6690 2 0 2 2 0 8 0 vmmpepl 168 45140 0 44257 90 0 90 90 0 357 44 vmsppl 488 560 0 541 5 0 5 5 0 8 0 rwobjpl 80 16174 0 15716 25 0 25 25 0 8 1 pdppl 4096 1131 0 1082 99 24 75 89 0 8 26 pvpl 32 12257 0 0 99 0 99 99 0 265 0 pmappl 256 560 0 541 3 0 3 3 0 8 0 extentpl 40 47 0 29 1 0 1 1 0 8 0 phpool 120 440 0 28 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffffffff85066ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff854fd3c0) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff854fd3c0) at __mp_lock+0x272 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7c1816818ff0, count: 8 ddb{0}> trace x86_ipi_db(ffffffff85066ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff854fd3c0) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff854fd3c0) at __mp_lock+0x272 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7c1816818ff0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x17: popq %rbp db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84635f88) at panic+0x270 sys/kern/subr_prf.c:198 __asan_load4_noabort(ffff800001d98b54) at __asan_load4_noabort+0xa3 igmp_leavegroup(ffff80000016d080,ffff800001cc8800,ffff800039f13f20) at igmp_leavegroup+0x127 sys/netinet/igmp.c:583 in_delmulti(ffff80000016d080) at in_delmulti+0x10f sys/netinet/in.c:963 ip_freemoptions(ffff80000186aa60) at ip_freemoptions+0x9f sys/netinet/ip_output.c:-1 in_pcbdetach(ffff800001d90548) at in_pcbdetach+0x187 sys/netinet/in_pcb.c:605 rip_detach(ffff8000018f65f0) at rip_detach+0x72 sys/netinet/raw_ip.c:509 soclose(ffff8000018f65f0,0) at soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff8000018f65f0,0) at soclose+0x10a sys/kern/uipc_socket.c:403 soo_close(ffff800001d83a60,ffff80003bb46d20) at soo_close+0x72 sys/kern/sys_socket.c:169 fdrop(ffff800001d83a60,ffff80003bb46d20) at fdrop+0x1c3 sys/kern/kern_descrip.c:1281 closef(ffff800001d83a60,ffff80003bb46d20) at closef+0x263 sys/kern/kern_descrip.c:1265 fdfree(ffff80003bb46d20) at fdfree+0x16d sys/kern/kern_descrip.c:1203 exit1(ffff80003bb46d20,0,0,1) at exit1+0x81e sys/kern/kern_exit.c:217 end trace frame: 0xffff800039f143f0, count: 0 ddb{1}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84635f88) at panic+0x270 sys/kern/subr_prf.c:198 __asan_load4_noabort(ffff800001d98b54) at __asan_load4_noabort+0xa3 igmp_leavegroup(ffff80000016d080,ffff800001cc8800,ffff800039f13f20) at igmp_leavegroup+0x127 sys/netinet/igmp.c:583 in_delmulti(ffff80000016d080) at in_delmulti+0x10f sys/netinet/in.c:963 ip_freemoptions(ffff80000186aa60) at ip_freemoptions+0x9f sys/netinet/ip_output.c:-1 in_pcbdetach(ffff800001d90548) at in_pcbdetach+0x187 sys/netinet/in_pcb.c:605 rip_detach(ffff8000018f65f0) at rip_detach+0x72 sys/netinet/raw_ip.c:509 soclose(ffff8000018f65f0,0) at soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff8000018f65f0,0) at soclose+0x10a sys/kern/uipc_socket.c:403 soo_close(ffff800001d83a60,ffff80003bb46d20) at soo_close+0x72 sys/kern/sys_socket.c:169 fdrop(ffff800001d83a60,ffff80003bb46d20) at fdrop+0x1c3 sys/kern/kern_descrip.c:1281 closef(ffff800001d83a60,ffff80003bb46d20) at closef+0x263 sys/kern/kern_descrip.c:1265 fdfree(ffff80003bb46d20) at fdfree+0x16d sys/kern/kern_descrip.c:1203 exit1(ffff80003bb46d20,0,0,1) at exit1+0x81e sys/kern/kern_exit.c:217 sys_exit(ffff80003bb46d20,ffff800039f14570,ffff800039f144e0) at sys_exit+0x4a syscall(ffff800039f14570) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039f14570) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d678f2d93f0, count: -17 ddb{1}>