kernel: protection fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace in_delmulti(bfffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a77500) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000aab800) at in_ifdetach+0x74 sys/netinet/in.c:969 if_detach(ffff800000aab800) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff800000aab800) at tun_clone_destroy+0x179 sys/net/if_tun.c:312 spec_close(ffff800022384d00) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e134278,7,fffffd807f7c6a20,ffff800020ac13d8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd80659fa310,ffff800020ac13d8) at vn_closefile+0xd8 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80659fa310,ffff800020ac13d8) at vn_closefile+0xd8 sys/kern/vfs_vnops.c:610 fdrop(fffffd80659fa310,ffff800020ac13d8) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd80659fa310,ffff800020ac13d8) at closef+0x11d sys/kern/kern_descrip.c:1257 fdfree(ffff800020ac13d8) at fdfree+0x101 sys/kern/kern_descrip.c:1189 exit1(ffff800020ac13d8,19,1) at exit1+0x32f sys/kern/kern_exit.c:196 postsig(ffff800020ac13d8,19) at postsig+0x4e3 sigexit sys/kern/kern_sig.c:1499 [inline] postsig(ffff800020ac13d8,19) at postsig+0x4e3 sys/kern/kern_sig.c:1431 userret(ffff800020ac13d8) at userret+0x199 sys/kern/kern_sig.c:1889 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffbeee0, count: -15 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800022384b30 rbx 0 rdx 0xffff800020ac13d8 rcx 0 rax 0 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0x1bd05e8568daffcb r12 0 r13 0x3 r14 0xbfffffffffffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022384ad0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=306471 stat=onproc flags process=a proc=2000 pri=17, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ac1160,0xffff800020ac02a0 process=0xffff800020aece00 user=0xffff800022380000, vmspace=0xfffffd807f0088a0 estcpu=36, cpticks=4, pctcpu=0.6 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53143 203220 43408 0 3 0x80 nanosleep syz-executor.1 53143 481299 43408 0 3 0x4000080 netcon2 syz-executor.1 53143 152930 43408 0 3 0x4000080 fsleep syz-executor.1 18808 427923 0 0 3 0x14200 bored sosplice 43408 248243 7246 0 3 0x82 nanosleep syz-executor.1 7246 466583 79784 0 3 0x82 thrsleep syz-fuzzer 7246 9298 79784 0 3 0x4000082 nanosleep syz-fuzzer 7246 18145 79784 0 3 0x4000082 thrsleep syz-fuzzer 7246 286487 79784 0 3 0x4000082 thrsleep syz-fuzzer 7246 175699 79784 0 3 0x4000082 thrsleep syz-fuzzer 7246 366933 79784 0 3 0x4000082 thrsleep syz-fuzzer 7246 322364 79784 0 3 0x4000082 thrsleep syz-fuzzer 7246 325843 79784 0 7 0x4000082 syz-fuzzer 7246 54516 79784 0 3 0x4000082 thrsleep syz-fuzzer 7246 60289 79784 0 3 0x4000082 thrsleep syz-fuzzer 79784 193365 23710 0 3 0x10008a pause ksh 23710 268090 48502 0 3 0x92 select sshd 5905 304060 1 0 3 0x100083 ttyin getty 48502 475623 1 0 3 0x80 select sshd 53023 219649 37042 74 3 0x100092 bpf pflogd 37042 354597 1 0 3 0x80 netio pflogd 4020 257755 85390 73 3 0x100090 kqread syslogd 85390 410481 1 0 3 0x100082 netio syslogd 90747 207277 1 77 2 0x100090 dhclient 28438 402944 1 0 3 0x80 poll dhclient 56889 103359 0 0 2 0x14200 zerothread 35004 80966 0 0 3 0x14200 aiodoned aiodoned 18800 161378 0 0 3 0x14200 syncer update 90297 147269 0 0 3 0x14200 cleaner cleaner 41928 343911 0 0 3 0x14200 reaper reaper 39371 369836 0 0 3 0x14200 pgdaemon pagedaemon 51622 144277 0 0 3 0x14200 bored crynlk 82239 62516 0 0 3 0x14200 bored crypto 65337 94019 0 0 3 0x40014200 acpi0 acpi0 62139 512792 0 0 3 0x40014200 idle1 54452 355521 0 0 2 0x14200 softnet 96976 508561 0 0 2 0x14200 systqmp 1491 66369 0 0 3 0x14200 bored systq 49331 210039 0 0 3 0x40014200 bored softclock 41114 326496 0 0 3 0x40014200 idle0 7533 505508 0 0 3 0x14200 bored smr 1 335249 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 9523 6542K 7119K 78643K 11102 0 pcb 13 8K 8K 78643K 80 0 rtable 96 3K 4K 78643K 311 0 ifaddr 75 15K 16K 78643K 118 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1474 0 iov 0 0K 16K 78643K 50 0 mount 1 1K 1K 78643K 1 0 vnodes 1232 77K 78K 78643K 1421 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 64 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 223 0 proc 60 63K 95K 78643K 507 0 subproc 23 1K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 29 0 in_multi 66 3K 3K 78643K 92 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 78 344K 344K 78643K 78 0 exec 0 0K 1K 78643K 232 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 127 22K 23K 78643K 1700 0 UVM aobj 21 2K 2K 78643K 21 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 2K 78643K 75 0 NDP 11 0K 0K 78643K 25 0 temp 134 3023K 3096K 78643K 20847 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 9 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 61 0 23 2 0 2 2 0 8 0 unpcb 120 373 0 361 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 81 0 81 1 1 0 1 0 8 0 tcpcb 544 74 0 68 1 0 1 1 0 8 0 inpcb 280 326 0 317 3 1 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 7 0 4 1 0 1 1 0 8 0 ppxss 1128 1 0 1 1 0 1 1 0 8 1 pffrag 232 4 0 4 2 1 1 1 0 482 1 pffrnode 88 4 0 4 2 1 1 1 0 8 1 pffrent 40 180 0 180 2 1 1 1 0 8 1 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 31 0 3 1 0 1 1 0 8 0 pfstkey 112 31 0 3 1 0 1 1 0 8 0 pfstate 328 31 0 3 3 0 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 256 279 0 82 14 0 14 14 0 8 1 art_table 32 280 0 82 2 0 2 2 0 8 0 art_node 16 60 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 100 0 60 1 0 1 1 0 8 0 semupl 112 4 0 4 2 1 1 1 0 8 1 semapl 112 62 0 52 1 0 1 1 0 8 0 shmpl 112 19 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1729 0 325 46 0 46 46 0 8 0 ffsino 272 1729 0 325 95 0 95 95 0 8 0 nchpl 144 2256 0 652 61 0 61 61 0 8 0 uvmvnodes 72 1913 0 0 35 0 35 35 0 8 0 vnodes 208 1913 0 0 101 0 101 101 0 8 0 namei 1024 7081 0 7081 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 6301 0 6301 8 4 4 7 0 8 4 plimitpl 152 34 0 26 1 0 1 1 0 8 0 sigapl 432 419 0 404 3 1 2 3 0 8 0 futexpl 56 4731 0 4730 1 0 1 1 0 8 0 knotepl 112 120 0 101 1 0 1 1 0 8 0 kqueuepl 104 137 0 135 1 0 1 1 0 8 0 pipepl 160 224 0 206 3 1 2 2 0 8 1 fdescpl 488 420 0 404 3 0 3 3 0 8 0 filepl 152 3321 0 3225 7 2 5 6 0 8 0 lockfpl 104 72 0 71 1 0 1 1 0 8 0 lockfspl 48 22 0 21 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 671 0 662 1 0 1 1 0 8 0 zombiepl 144 405 0 404 1 0 1 1 0 8 0 processpl 896 436 0 404 4 0 4 4 0 8 0 procpl 632 860 0 817 5 0 5 5 0 8 1 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 3 0 3 1 0 1 1 0 8 1 sockpl 384 738 0 714 5 1 4 4 0 8 1 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 176 0 0 21 0 21 21 0 8 0 mtagpl 80 6 0 0 1 0 1 1 0 8 0 mbufpl 256 364 0 0 22 0 22 22 0 8 0 bufpl 280 6837 0 1350 392 0 392 392 0 8 0 anonpl 16 73201 0 52948 100 2 98 98 0 125 15 amapchunkpl 152 2414 0 2258 12 3 9 11 0 158 2 amappl16 192 2662 0 1553 74 6 68 68 0 8 12 amappl15 184 62 0 58 1 0 1 1 0 8 0 amappl14 176 125 0 119 1 0 1 1 0 8 0 amappl12 160 13 0 12 2 1 1 1 0 8 0 amappl11 152 85 0 70 1 0 1 1 0 8 0 amappl10 144 79 0 72 1 0 1 1 0 8 0 amappl9 136 621 0 616 1 0 1 1 0 8 0 amappl8 128 133 0 105 1 0 1 1 0 8 0 amappl7 120 169 0 157 1 0 1 1 0 8 0 amappl6 112 84 0 78 1 0 1 1 0 8 0 amappl5 104 134 0 120 1 0 1 1 0 8 0 amappl4 96 668 0 640 1 0 1 1 0 8 0 amappl3 88 129 0 120 1 0 1 1 0 8 0 amappl2 80 2415 0 2340 3 1 2 3 0 8 0 amappl1 72 19368 0 18911 26 16 10 21 0 8 0 amappl 80 1130 0 1083 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 20 0 0 1 0 1 1 0 8 0 uaddrrnd 24 420 0 404 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 420 0 404 1 0 1 1 0 8 0 vmmpekpl 168 7101 0 7066 2 0 2 2 0 8 0 vmmpepl 168 60811 0 58515 142 8 134 136 0 357 30 vmsppl 368 419 0 404 2 0 2 2 0 8 0 pdppl 4096 847 0 808 6 0 6 6 0 8 1 pvpl 32 204157 0 180721 229 1 228 228 0 265 36 pmappl 232 419 0 404 2 1 1 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 173 0 3 5 0 5 5 0 8 0