kernel: protection fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace in_delmulti(bff7ffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff8000006a2700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009e3800) at in_ifdetach+0x74 sys/netinet/in.c:969 if_setrdomain(ffff8000009e3800,2b) at if_setrdomain+0x19a sys/net/if.c:1888 ifioctl(fffffd8036faaa80,8020699f,ffff80001597a2e0,ffff8000ffff3b40) at ifioctl+0x169d sys/net/if.c:2148 sys_ioctl(ffff8000ffff3b40,ffff80001597a3f8,ffff80001597a440) at sys_ioctl+0x5b9 syscall(ffff80001597a4c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c4e7af0ea0, count: -8 ddb> show registers rdi 0xffffffff8152520d in_delmulti+0x8d rsi 0x1b599 acpi_pdirpa+0x7401 rbp 0xffff80001597a100 rbx 0 rdx 0x1b59a acpi_pdirpa+0x7402 rcx 0xffff800014957000 rax 0xffff800014957000 r8 0xffff8000006a2700 r9 0x5 r10 0x9c48c4dea6881077 r11 0x1969c5a7fe068249 r12 0 r13 0x3 r14 0xbff7ffffffffffff r15 0x1 rip 0xffffffff8152520d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001597a0a0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=55621 stat=onproc flags process=0 proc=4000000 pri=79, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3160,0xffffffff825654b8 process=0xffff8000ffff7450 user=0xffff800015975000, vmspace=0xfffffd802deccbc0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 28008 428822 31223 0 2 0 syz-executor.0 *28008 55621 31223 0 7 0x4000000 syz-executor.0 22146 118936 59695 0 2 0 syz-executor.1 22146 516716 59695 0 3 0x4000080 lockf syz-executor.1 22146 310086 59695 0 3 0x4000080 fsleep syz-executor.1 86315 147665 0 0 3 0x14200 bored sosplice 65221 332560 0 0 3 0x14200 acct acct 59695 453160 45776 0 3 0x82 nanosleep syz-executor.1 31223 108257 45776 0 3 0x82 nanosleep syz-executor.0 45776 508230 86196 0 3 0x82 thrsleep syz-fuzzer 45776 418566 86196 0 3 0x4000082 nanosleep syz-fuzzer 45776 465993 86196 0 3 0x4000082 thrsleep syz-fuzzer 45776 161217 86196 0 3 0x4000082 thrsleep syz-fuzzer 45776 106366 86196 0 3 0x4000082 thrsleep syz-fuzzer 45776 269689 86196 0 3 0x4000082 kqread syz-fuzzer 45776 487983 86196 0 3 0x4000082 thrsleep syz-fuzzer 45776 105830 86196 0 3 0x4000082 thrsleep syz-fuzzer 86196 317598 83146 0 3 0x10008a pause ksh 83146 244117 6846 0 3 0x92 select sshd 55425 241535 1 0 3 0x100083 ttyin getty 6846 53614 1 0 3 0x80 select sshd 13726 235143 51909 73 3 0x100090 kqread syslogd 51909 472970 1 0 3 0x100082 netio syslogd 97098 496833 1 77 2 0x100090 dhclient 97887 363761 1 0 3 0x80 poll dhclient 84439 474350 0 0 2 0x14200 zerothread 8235 370261 0 0 3 0x14200 aiodoned aiodoned 545 326936 0 0 3 0x14200 syncer update 10531 64345 0 0 3 0x14200 cleaner cleaner 78975 476275 0 0 3 0x14200 reaper reaper 91731 117417 0 0 3 0x14200 pgdaemon pagedaemon 35924 40195 0 0 3 0x14200 bored crynlk 85368 442441 0 0 3 0x14200 bored crypto 72599 287844 0 0 3 0x40014200 acpi0 acpi0 48677 30423 0 0 3 0x14200 bored softnet 87149 489932 0 0 2 0x14200 systqmp 78059 54565 0 0 3 0x14200 bored systq 56886 223166 0 0 3 0x40014200 bored softclock 4927 84654 0 0 3 0x40014200 idle0 38414 509223 0 0 3 0x14200 bored smr 1 362478 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9495 6466K 7562K 78643K 12075 0 pcb 13 10K 12K 78643K 119 0 rtable 86 7K 7K 78643K 272 0 ifaddr 60 12K 13K 78643K 97 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 27 0 iov 0 0K 24K 78643K 50 0 mount 1 1K 1K 78643K 1 0 vnodes 1229 77K 78K 78643K 1613 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 88 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 6 17K 25K 78643K 221 0 sigio 0 0K 0K 78643K 12 0 proc 48 38K 63K 78643K 372 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 0 0K 0K 78643K 42 0 in_multi 34 1K 2K 78643K 60 0 ether_multi 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 54 238K 238K 78643K 54 0 exec 0 0K 1K 78643K 205 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 115 38K 38K 78643K 1419 0 UVM aobj 8 2K 2K 78643K 10 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 41 0 NDP 10 0K 0K 78643K 21 0 temp 126 3014K 3082K 78643K 12579 0 kqueue 0 0K 0K 78643K 30 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 4 1 0 1 1 0 8 0 rtpcb 80 41 0 39 1 0 1 1 0 8 0 rtentry 112 45 0 15 2 0 2 2 0 8 0 unpcb 120 303 0 295 1 0 1 1 0 8 0 syncache 264 8 0 8 2 2 0 1 0 8 0 tcpqe 32 15 0 15 3 3 0 1 0 8 0 tcpcb 544 345 0 341 15 14 1 15 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 280 611 0 602 9 7 2 9 0 8 1 nd6 48 4 0 2 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 5 0 5 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 213 0 43 14 2 12 14 0 8 0 art_table 32 214 0 43 2 0 2 2 0 8 0 art_node 16 44 0 13 1 0 1 1 0 8 0 sysvmsgpl 40 69 0 29 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 82 0 72 1 0 1 1 0 8 0 shmpl 112 8 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1719 0 320 46 0 46 46 0 8 0 ffsino 240 1719 0 320 83 0 83 83 0 8 0 nchpl 144 2246 0 632 60 0 60 60 0 8 0 uvmvnodes 72 2115 0 0 39 0 39 39 0 8 0 vnodes 208 2115 0 0 112 0 112 112 0 8 0 namei 1024 6292 0 6292 1 0 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 4 2 1 1 1 0 8 0 scxspl 192 6354 0 6353 8 7 1 7 0 8 0 plimitpl 152 27 0 20 1 0 1 1 0 8 0 sigapl 432 392 0 378 2 0 2 2 0 8 0 futexpl 56 8489 0 8488 1 0 1 1 0 8 0 knotepl 112 116 0 97 1 0 1 1 0 8 0 kqueuepl 104 236 0 234 4 3 1 4 0 8 0 pipepl 128 328 0 307 3 1 2 2 0 8 0 fdescpl 424 393 0 378 2 0 2 2 0 8 0 filepl 120 3499 0 3395 12 7 5 11 0 8 1 lockfpl 104 80 0 77 1 0 1 1 0 8 0 lockfspl 48 31 0 29 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 25 0 15 1 0 1 1 0 8 0 ucredpl 96 335 0 328 1 0 1 1 0 8 0 zombiepl 144 378 0 378 1 0 1 1 0 8 1 processpl 864 409 0 378 4 0 4 4 0 8 0 procpl 632 700 0 659 5 1 4 5 0 8 0 sosppl 128 4 0 4 2 1 1 1 0 8 1 sockpl 384 958 0 939 15 10 5 14 0 8 3 mcl64k 65536 48 0 48 4 3 1 4 0 8 1 mcl16k 16384 9 0 9 3 2 1 1 0 8 1 mcl12k 12288 14 0 14 1 0 1 1 0 8 1 mcl9k 9216 3 0 3 2 1 1 1 0 8 1 mcl8k 8192 12 0 12 1 0 1 1 0 8 1 mcl4k 4096 31 0 31 2 1 1 1 0 8 1 mcl2k2 2112 3 0 3 1 1 0 1 0 8 0 mcl2k 2048 68928 0 68878 19 12 7 16 0 8 0 mtagpl 80 23 0 23 2 1 1 1 0 8 1 mbufpl 256 111290 0 111184 14 3 11 12 0 8 0 bufpl 280 6670 0 1728 354 0 354 354 0 8 0 anonpl 16 78741 0 58744 105 6 99 99 0 62 17 amapchunkpl 152 2349 0 2196 14 7 7 14 0 158 0 amappl16 192 3288 0 2176 82 18 64 70 0 8 8 amappl15 184 51 0 46 1 0 1 1 0 8 0 amappl14 176 34 0 31 1 0 1 1 0 8 0 amappl12 160 3 0 3 1 1 0 1 0 8 0 amappl11 152 139 0 125 1 0 1 1 0 8 0 amappl10 144 11 0 7 1 0 1 1 0 8 0 amappl9 136 656 0 651 1 0 1 1 0 8 0 amappl8 128 216 0 188 1 0 1 1 0 8 0 amappl7 120 89 0 79 1 0 1 1 0 8 0 amappl6 112 148 0 136 1 0 1 1 0 8 0 amappl5 104 142 0 132 1 0 1 1 0 8 0 amappl4 96 617 0 586 1 0 1 1 0 8 0 amappl3 88 129 0 122 1 0 1 1 0 8 0 amappl2 80 2347 0 2268 3 1 2 3 0 8 0 amappl1 72 16710 0 16271 26 17 9 20 0 8 0 amappl 80 932 0 885 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 9 0 2 1 0 1 1 0 8 0 uaddrrnd 24 399 0 382 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 399 0 382 1 0 1 1 0 8 0 vmmpekpl 168 6919 0 6895 2 0 2 2 0 8 0 vmmpepl 168 56276 0 53943 137 23 114 133 0 357 12 vmsppl 272 398 0 382 3 1 2 2 0 8 0 pdppl 4096 804 0 766 6 1 5 6 0 8 0 pvpl 32 206240 0 183139 241 5 236 236 0 265 49 pmappl 200 398 0 382 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 171 0 41 5 0 5 5 0 8 0