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(fff7f7fffbffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a0e000) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009e3800) at in_ifdetach+0x74 sys/netinet/in.c:969 if_setrdomain(ffff8000009e3800,0) at if_setrdomain+0x19a sys/net/if.c:1888 ifioctl(fffffd803d5f5018,8020699f,ffff800017b8c620,ffff8000ffff3160) at ifioctl+0x169d sys/net/if.c:2148 sys_ioctl(ffff8000ffff3160,ffff800017b8c738,ffff800017b8c780) at sys_ioctl+0x5b9 syscall(ffff800017b8c800) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xae62ffdb3c0, count: -8 ddb> show registers rdi 0xffffffff8152520d in_delmulti+0x8d rsi 0x47c0 __ALIGN_SIZE+0x37c0 rbp 0xffff800017b8c440 rbx 0 rdx 0x47c1 __ALIGN_SIZE+0x37c1 rcx 0xffff800016b51000 rax 0xffff800016b51000 r8 0xffff800000a0e000 r9 0x5 r10 0xd05c40a9452d7e58 r11 0xe7610d1ecd9393fa r12 0 r13 0x3 r14 0xfff7f7fffbffffff r15 0x1 rip 0xffffffff8152520d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800017b8c3e0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=431668 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2018,0xffffffff825654b8 process=0xffff8000ffff6d90 user=0xffff800017b87000, vmspace=0xfffffd803f012cc0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 79717 122953 25269 0 2 0 syz-executor.0 *79717 431668 25269 0 7 0x4000000 syz-executor.0 64739 79564 36127 0 3 0x2 biowait syz-executor.1 25851 442563 0 0 3 0x14200 bored sosplice 25269 163305 36127 0 3 0x82 nanosleep syz-executor.0 36127 259695 55331 0 3 0x82 thrsleep syz-fuzzer 36127 493966 55331 0 3 0x4000082 nanosleep syz-fuzzer 36127 344071 55331 0 3 0x4000082 thrsleep syz-fuzzer 36127 11808 55331 0 3 0x4000082 thrsleep syz-fuzzer 36127 276968 55331 0 3 0x4000082 thrsleep syz-fuzzer 36127 55457 55331 0 3 0x4000082 thrsleep syz-fuzzer 36127 175048 55331 0 3 0x4000082 thrsleep syz-fuzzer 36127 132490 55331 0 3 0x4000082 kqread syz-fuzzer 55331 185126 59735 0 3 0x10008a pause ksh 59735 487515 17647 0 3 0x92 select sshd 70139 67549 1 0 3 0x100083 ttyin getty 17647 347989 1 0 3 0x80 select sshd 34958 495974 15347 73 3 0x100090 kqread syslogd 15347 431571 1 0 3 0x100082 netio syslogd 97954 184295 1 77 3 0x100090 poll dhclient 43574 80065 1 0 3 0x80 poll dhclient 44346 486573 0 0 2 0x14200 zerothread 33109 101966 0 0 3 0x14200 aiodoned aiodoned 15569 235566 0 0 3 0x14200 syncer update 55725 486520 0 0 3 0x14200 cleaner cleaner 35223 454161 0 0 3 0x14200 reaper reaper 13992 256722 0 0 3 0x14200 pgdaemon pagedaemon 34387 488275 0 0 3 0x14200 bored crynlk 71810 226252 0 0 3 0x14200 bored crypto 4468 110078 0 0 3 0x40014200 acpi0 acpi0 8129 92573 0 0 3 0x14200 bored softnet 16944 157384 0 0 3 0x14200 bored systqmp 81329 356472 0 0 3 0x14200 bored systq 85550 444443 0 0 3 0x40014200 bored softclock 1309 182186 0 0 3 0x40014200 idle0 55157 189078 0 0 3 0x14200 bored smr 1 430090 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 9539 6485K 7132K 78643K 13321 0 pcb 13 8K 8K 78643K 193 0 rtable 111 8K 8K 78643K 613 0 ifaddr 93 17K 18K 78643K 294 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 76 0 iov 0 0K 24K 78643K 210 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 2066 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 14 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 326 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 967 0 sigio 0 0K 0K 78643K 73 0 proc 49 38K 63K 78643K 470 0 subproc 32 2K 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 80 0 in_multi 60 3K 3K 78643K 132 0 ether_multi 1 0K 0K 78643K 10 0 mrt 0 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 72 318K 318K 78643K 72 0 exec 0 0K 1K 78643K 286 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 131 120K 124K 78643K 3195 0 UVM aobj 47 2K 2K 78643K 49 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 274 0 NDP 16 0K 0K 78643K 64 0 temp 151 3019K 3091K 78643K 38474 0 kqueue 0 0K 0K 78643K 5 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 11 0 6 1 0 1 1 0 8 0 rtpcb 80 117 0 115 1 0 1 1 0 8 0 rtentry 112 92 0 51 2 0 2 2 0 8 0 unpcb 120 513 0 504 1 0 1 1 0 8 0 syncache 264 9 0 9 3 3 0 1 0 8 0 tcpqe 32 24 0 24 2 2 0 1 0 8 0 tcpcb 544 820 0 816 4 3 1 2 0 8 0 ipq 40 8 0 8 5 4 1 1 0 8 1 ipqe 40 190 0 190 5 4 1 1 0 8 1 inpcb 280 2118 0 2109 6 5 1 3 0 8 0 rttmr 72 2 0 1 1 0 1 1 0 8 0 nd6 48 12 0 9 2 1 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 23 0 23 3 3 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 552 0 308 20 4 16 16 0 8 0 art_table 32 554 0 308 3 0 3 3 0 8 0 art_node 16 91 0 54 1 0 1 1 0 8 0 sysvmsgpl 40 43 0 25 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 324 0 314 1 0 1 1 0 8 0 shmpl 112 47 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2856 0 1451 46 0 46 46 0 8 0 ffsino 240 2856 0 1451 83 0 83 83 0 8 0 nchpl 144 4731 0 4278 61 41 20 61 0 8 0 uvmvnodes 72 3549 0 0 65 0 65 65 0 8 0 vnodes 208 3549 0 0 187 0 187 187 0 8 0 namei 1024 13730 0 13730 1 0 1 1 0 8 1 vcpupl 1984 15 0 0 2 0 2 2 0 8 0 vmpool 528 19 0 4 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 14892 0 14891 13 12 1 7 0 8 0 plimitpl 152 86 0 79 1 0 1 1 0 8 0 sigapl 432 1135 0 1122 2 0 2 2 0 8 0 futexpl 56 27524 0 27524 2 1 1 1 0 8 1 knotepl 112 183 0 164 1 0 1 1 0 8 0 kqueuepl 104 282 0 280 1 0 1 1 0 8 0 pipepl 128 828 0 809 4 3 1 2 0 8 0 fdescpl 424 1136 0 1122 2 0 2 2 0 8 0 filepl 120 9655 0 9558 7 3 4 5 0 8 1 lockfpl 104 357 0 356 1 0 1 1 0 8 0 lockfspl 48 125 0 124 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 28 0 18 1 0 1 1 0 8 0 ucredpl 96 895 0 887 1 0 1 1 0 8 0 zombiepl 144 1122 0 1122 2 1 1 1 0 8 1 processpl 864 1151 0 1122 4 0 4 4 0 8 0 procpl 632 2372 0 2335 4 0 4 4 0 8 0 sosppl 128 14 0 14 3 3 0 1 0 8 0 sockpl 384 2775 0 2755 7 4 3 5 0 8 0 mcl64k 65536 83 0 83 2 1 1 1 0 8 1 mcl16k 16384 8 0 8 4 3 1 1 0 8 1 mcl12k 12288 30 0 30 4 3 1 1 0 8 1 mcl9k 9216 15 0 15 5 5 0 1 0 8 0 mcl8k 8192 48 0 48 3 2 1 1 0 8 1 mcl4k 4096 104 0 104 2 1 1 1 0 8 1 mcl2k2 2112 12 0 12 5 5 0 1 0 8 0 mcl2k 2048 72163 0 72118 14 7 7 13 0 8 1 mtagpl 80 32 0 30 2 1 1 1 0 8 0 mbufpl 256 121636 0 121553 52 32 20 36 0 8 8 bufpl 280 11014 0 4806 444 0 444 444 0 8 0 anonpl 16 144603 0 123119 136 33 103 105 0 62 16 amapchunkpl 152 5993 0 5826 50 29 21 21 0 158 14 amappl16 192 7244 0 6053 105 37 68 71 0 8 8 amappl15 184 52 0 48 1 0 1 1 0 8 0 amappl14 176 131 0 128 1 0 1 1 0 8 0 amappl12 160 17 0 14 1 0 1 1 0 8 0 amappl11 152 422 0 411 1 0 1 1 0 8 0 amappl10 144 461 0 457 1 0 1 1 0 8 0 amappl9 136 547 0 544 1 0 1 1 0 8 0 amappl8 128 136 0 107 2 0 2 2 0 8 0 amappl7 120 545 0 533 1 0 1 1 0 8 0 amappl6 112 428 0 421 1 0 1 1 0 8 0 amappl5 104 221 0 209 1 0 1 1 0 8 0 amappl4 96 1375 0 1343 1 0 1 1 0 8 0 amappl3 88 153 0 146 1 0 1 1 0 8 0 amappl2 80 8272 0 8201 3 1 2 3 0 8 0 amappl1 72 29019 0 28599 24 15 9 20 0 8 0 amappl 80 2635 0 2587 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 48 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1155 0 1126 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1155 0 1126 1 0 1 1 0 8 0 vmmpekpl 168 11192 0 11164 2 0 2 2 0 8 0 vmmpepl 168 141338 0 138990 182 39 143 147 0 357 39 vmsppl 272 1154 0 1126 3 1 2 2 0 8 0 pdppl 4096 2316 0 2267 8 1 7 7 0 8 0 pvpl 32 392951 0 369680 304 38 266 278 0 265 75 pmappl 200 1154 0 1126 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 203 0 57 5 0 5 5 0 8 0