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(bffffffffff7dfff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a30f00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009f5000) at in_ifdetach+0x74 sys/netinet/in.c:969 if_setrdomain(ffff8000009f5000,6) at if_setrdomain+0x19a sys/net/if.c:1888 ifioctl(fffffd802a3d7028,8020699f,ffff80001677e710,ffff80001492cee8) at ifioctl+0x169d sys/net/if.c:2148 sys_ioctl(ffff80001492cee8,ffff80001677e828,ffff80001677e870) at sys_ioctl+0x5b9 syscall(ffff80001677e8f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x764a14e89d0, count: -8 ddb> show registers rdi 0xffffffff8152520d in_delmulti+0x8d rsi 0x6b68 __ALIGN_SIZE+0x5b68 rbp 0xffff80001677e530 rbx 0 rdx 0x6b69 __ALIGN_SIZE+0x5b69 rcx 0xffff80001495b000 rax 0xffff80001495b000 r8 0xffff800000a30f00 r9 0x5 r10 0x9eb2ad715f48d688 r11 0x96f8e52c1d4971f9 r12 0 r13 0x3 r14 0xbffffffffff7dfff r15 0x1 rip 0xffffffff8152520d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001677e4d0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=59619 stat=onproc flags process=0 proc=4000000 pri=72, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff80001492d160,0xffffffff825654b8 process=0xffff8000ffff6370 user=0xffff800016779000, 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 33145 50391 52059 0 2 0 syz-executor.1 *33145 59619 52059 0 7 0x4000000 syz-executor.1 86679 53237 83595 0 2 0 syz-executor.0 86679 438310 83595 0 3 0x4000080 fsleep syz-executor.0 72771 90528 0 0 3 0x14200 bored sosplice 52059 94222 65981 0 3 0x82 nanosleep syz-executor.1 83595 305780 65981 0 3 0x82 nanosleep syz-executor.0 65981 472786 86142 0 3 0x82 thrsleep syz-fuzzer 65981 500587 86142 0 3 0x4000082 thrsleep syz-fuzzer 65981 300355 86142 0 3 0x4000082 thrsleep syz-fuzzer 65981 395154 86142 0 3 0x4000082 thrsleep syz-fuzzer 65981 487805 86142 0 3 0x4000082 thrsleep syz-fuzzer 65981 480856 86142 0 3 0x4000082 thrsleep syz-fuzzer 65981 345684 86142 0 3 0x4000082 thrsleep syz-fuzzer 65981 381068 86142 0 3 0x4000082 kqread syz-fuzzer 86142 350151 34871 0 3 0x10008a pause ksh 34871 63048 46841 0 3 0x92 select sshd 37206 50933 1 0 3 0x100083 ttyin getty 46841 81069 1 0 3 0x80 select sshd 53982 56193 40336 73 3 0x100090 kqread syslogd 40336 393137 1 0 3 0x100082 netio syslogd 68119 312147 1 77 2 0x100090 dhclient 80868 131780 1 0 2 0x80 dhclient 75556 59486 0 0 2 0x14200 zerothread 42344 346135 0 0 3 0x14200 aiodoned aiodoned 40952 126682 0 0 3 0x14200 syncer update 9467 127839 0 0 3 0x14200 cleaner cleaner 60337 269872 0 0 3 0x14200 reaper reaper 60729 177154 0 0 3 0x14200 pgdaemon pagedaemon 44485 202931 0 0 3 0x14200 bored crynlk 25767 452719 0 0 3 0x14200 bored crypto 57710 402675 0 0 3 0x40014200 acpi0 acpi0 36383 415545 0 0 3 0x14200 bored softnet 34793 217348 0 0 2 0x14200 systqmp 82278 514995 0 0 3 0x14200 bored systq 23393 502067 0 0 3 0x40014200 bored softclock 96792 191897 0 0 3 0x40014200 idle0 91225 72448 0 0 3 0x14200 bored smr 1 39634 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 9520 6679K 6761K 78643K 10981 0 pcb 13 8K 8K 78643K 613 0 rtable 102 4K 4K 78643K 1169 0 ifaddr 66 13K 14K 78643K 106 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 33 0 iov 0 0K 16K 78643K 30 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1396 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 46 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 6 17K 25K 78643K 568 0 sigio 0 0K 0K 78643K 4 0 proc 48 38K 63K 78643K 389 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 16 0 in_multi 42 2K 2K 78643K 51 0 ether_multi 1 0K 0K 78643K 1 0 mrt 0 0K 0K 78643K 553 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 96 424K 424K 78643K 96 0 exec 0 0K 1K 78643K 196 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 116 22K 30K 78643K 2240 0 UVM aobj 84 3K 3K 78643K 84 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 25 0 NDP 11 0K 0K 78643K 22 0 temp 130 3014K 3080K 78643K 4477 0 kqueue 0 0K 0K 78643K 2 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 7 0 3 1 0 1 1 0 8 0 rtpcb 80 43 0 41 1 0 1 1 0 8 0 rtentry 112 341 0 303 2 0 2 2 0 8 0 unpcb 120 139 0 125 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 168 0 168 1 1 0 1 0 8 0 tcpcb 544 154 0 150 2 1 1 2 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 90 0 90 1 1 0 1 0 8 0 inpcb 280 1421 0 1414 6 4 2 3 0 8 1 rttmr 72 127 0 127 1 0 1 1 0 8 1 nd6 48 5 0 2 1 0 1 1 0 8 0 ppxss 1128 6 0 6 3 2 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 285 0 85 14 0 14 14 0 8 0 art_table 32 286 0 85 2 0 2 2 0 8 0 art_node 16 340 0 301 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 12 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 44 0 34 1 0 1 1 0 8 0 shmpl 112 82 0 0 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2185 0 783 46 0 46 46 0 8 0 ffsino 240 2185 0 783 83 0 83 83 0 8 0 nchpl 144 3133 0 1520 60 0 60 60 0 8 0 uvmvnodes 72 2308 0 0 42 0 42 42 0 8 0 vnodes 208 2308 0 0 122 0 122 122 0 8 0 namei 1024 9146 0 9146 1 0 1 1 0 8 1 scxspl 192 8471 0 8471 10 7 3 7 0 8 3 plimitpl 152 28 0 21 1 0 1 1 0 8 0 sigapl 432 739 0 725 2 0 2 2 0 8 0 futexpl 56 14169 0 14168 1 0 1 1 0 8 0 knotepl 112 66 0 47 1 0 1 1 0 8 0 kqueuepl 104 46 0 44 1 0 1 1 0 8 0 pipepl 128 264 0 245 1 0 1 1 0 8 0 fdescpl 424 740 0 725 2 0 2 2 0 8 0 filepl 120 5435 0 5328 8 3 5 5 0 8 1 lockfpl 104 83 0 81 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 21 0 11 1 0 1 1 0 8 0 ucredpl 96 1406 0 1399 1 0 1 1 0 8 0 zombiepl 144 725 0 725 1 0 1 1 0 8 1 processpl 864 755 0 725 4 0 4 4 0 8 0 procpl 632 1542 0 1503 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 384 1606 0 1583 7 3 4 5 0 8 1 mcl64k 65536 14 0 14 2 1 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 13 0 13 2 1 1 1 0 8 1 mcl9k 9216 4 0 4 3 2 1 1 0 8 1 mcl8k 8192 22 0 22 2 1 1 1 0 8 1 mcl4k 4096 37 0 37 3 2 1 1 0 8 1 mcl2k2 2112 10 0 10 4 4 0 1 0 8 0 mcl2k 2048 70984 0 70924 22 13 9 17 0 8 0 mtagpl 80 4 0 3 3 2 1 1 0 8 0 mbufpl 256 116909 0 116794 24 10 14 18 0 8 1 bufpl 280 6925 0 2042 349 0 349 349 0 8 0 anonpl 16 79353 0 59261 92 10 82 90 0 62 0 amapchunkpl 152 3225 0 3073 13 6 7 11 0 158 0 amappl16 192 3957 0 2831 64 6 58 63 0 8 1 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 28 0 23 1 0 1 1 0 8 0 amappl13 168 263 0 260 1 0 1 1 0 8 0 amappl12 160 7 0 6 2 1 1 1 0 8 0 amappl11 152 46 0 35 1 0 1 1 0 8 0 amappl10 144 7 0 6 1 0 1 1 0 8 0 amappl9 136 564 0 560 1 0 1 1 0 8 0 amappl8 128 121 0 92 1 0 1 1 0 8 0 amappl7 120 91 0 81 1 0 1 1 0 8 0 amappl6 112 65 0 56 1 0 1 1 0 8 0 amappl5 104 145 0 134 1 0 1 1 0 8 0 amappl4 96 1215 0 1183 1 0 1 1 0 8 0 amappl3 88 135 0 125 1 0 1 1 0 8 0 amappl2 80 5180 0 5103 3 1 2 3 0 8 0 amappl1 72 24128 0 23706 27 18 9 20 0 8 0 amappl 80 1762 0 1717 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 83 0 0 2 0 2 2 0 8 0 uaddrrnd 24 740 0 725 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 740 0 725 1 0 1 1 0 8 0 vmmpekpl 168 8265 0 8240 2 0 2 2 0 8 0 vmmpepl 168 95049 0 92721 130 27 103 123 0 357 1 vmsppl 272 739 0 725 2 1 1 2 0 8 0 pdppl 4096 1486 0 1450 6 1 5 6 0 8 0 pvpl 32 236035 0 212852 217 25 192 214 0 265 2 pmappl 200 739 0 725 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 168 0 32 5 0 5 5 0 8 0