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(bffffffdffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff8000006a2c00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009e3800) at in_ifdetach+0x74 sys/netinet/in.c:969 if_setrdomain(ffff8000009e3800,6) at if_setrdomain+0x19a sys/net/if.c:1888 ifioctl(fffffd8036fa8780,8020699f,ffff800015926b80,ffff8000ffff2290) at ifioctl+0x169d sys/net/if.c:2148 sys_ioctl(ffff8000ffff2290,ffff800015926c98,ffff800015926ce0) at sys_ioctl+0x5b9 syscall(ffff800015926d60) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x96c24dff1d0, count: -8 ddb> show registers rdi 0xffffffff8152520d in_delmulti+0x8d rsi 0x17705 acpi_pdirpa+0x356d rbp 0xffff8000159269a0 rbx 0 rdx 0x17706 acpi_pdirpa+0x356e rcx 0xffff800015b33000 rax 0xffff800015b33000 r8 0xffff8000006a2c00 r9 0x5 r10 0xdfbd6b1664d47807 r11 0x74d6e4b8598532f4 r12 0 r13 0x3 r14 0xbffffffdffffffff r15 0x1 rip 0xffffffff8152520d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015926940 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=410959 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3650,0xffffffff825654b8 process=0xffff8000ffff6d90 user=0xffff800015921000, vmspace=0xfffffd8029a24890 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97952 347190 57206 0 2 0 syz-executor.0 *97952 410959 57206 0 7 0x4000000 syz-executor.0 57206 498036 60666 0 3 0x82 nanosleep syz-executor.0 20431 480394 0 0 3 0x14200 bored sosplice 13584 344611 60666 0 3 0x2 biowait syz-executor.1 60666 273124 74950 0 3 0x82 thrsleep syz-fuzzer 60666 502883 74950 0 3 0x4000082 nanosleep syz-fuzzer 60666 223121 74950 0 3 0x4000082 thrsleep syz-fuzzer 60666 485509 74950 0 3 0x4000082 thrsleep syz-fuzzer 60666 44529 74950 0 3 0x4000082 thrsleep syz-fuzzer 60666 19054 74950 0 3 0x4000082 kqread syz-fuzzer 60666 344382 74950 0 3 0x4000082 thrsleep syz-fuzzer 60666 507891 74950 0 3 0x4000082 thrsleep syz-fuzzer 74950 123718 91482 0 3 0x10008a pause ksh 91482 518385 8388 0 3 0x92 select sshd 39667 49254 1 0 3 0x100083 ttyin getty 8388 296820 1 0 3 0x80 select sshd 4281 87629 4073 73 3 0x100090 kqread syslogd 4073 335808 1 0 3 0x100082 netio syslogd 79703 211413 1 77 2 0x100090 dhclient 76450 325889 1 0 3 0x80 poll dhclient 85482 297385 0 0 2 0x14200 zerothread 48672 123824 0 0 3 0x14200 aiodoned aiodoned 12268 323623 0 0 3 0x14200 syncer update 60983 22457 0 0 3 0x14200 cleaner cleaner 66772 309432 0 0 3 0x14200 reaper reaper 99905 251717 0 0 3 0x14200 pgdaemon pagedaemon 56442 21456 0 0 3 0x14200 bored crynlk 76132 167834 0 0 3 0x14200 bored crypto 4139 501717 0 0 3 0x40014200 acpi0 acpi0 82647 474974 0 0 3 0x14200 bored softnet 29341 313839 0 0 2 0x14200 systqmp 3111 235365 0 0 3 0x14200 bored systq 38161 368776 0 0 3 0x40014200 bored softclock 41083 487129 0 0 3 0x40014200 idle0 23629 127378 0 0 3 0x14200 bored smr 1 74610 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 9519 6349K 6855K 78643K 11323 0 pcb 13 10K 12K 78643K 79 0 rtable 104 4K 4K 78643K 418 0 ifaddr 85 16K 16K 78643K 144 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 30 0 iov 0 0K 16K 78643K 61 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 76K 77K 78643K 1467 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 69 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 299 0 sigio 0 0K 0K 78643K 12 0 proc 48 38K 54K 78643K 429 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 53 0 in_multi 75 3K 3K 78643K 114 0 ether_multi 1 0K 0K 78643K 4 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 84 371K 371K 78643K 84 0 exec 0 0K 1K 78643K 230 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 124 71K 71K 78643K 1600 0 UVM aobj 20 2K 2K 78643K 22 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 65 0 NDP 14 0K 0K 78643K 32 0 temp 142 3019K 3083K 78643K 26605 0 kqueue 0 0K 0K 78643K 4 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 7 1 0 1 1 0 8 0 rtpcb 80 60 0 58 1 0 1 1 0 8 0 rtentry 112 78 0 39 2 0 2 2 0 8 0 unpcb 120 396 0 387 2 1 1 2 0 8 0 syncache 264 5 0 5 2 2 0 1 0 8 0 tcpqe 32 168 0 168 2 2 0 1 0 8 0 tcpcb 544 305 0 301 14 5 9 14 0 8 8 ipq 40 2 0 2 1 0 1 1 0 8 1 ipqe 40 4 0 4 1 0 1 1 0 8 1 inpcb 280 569 0 562 10 1 9 9 0 8 8 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 9 0 6 1 0 1 1 0 8 0 ppxss 1128 4 0 4 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 360 0 152 15 0 15 15 0 8 0 art_table 32 362 0 152 2 0 2 2 0 8 0 art_node 16 77 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 115 0 75 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 66 0 56 1 0 1 1 0 8 0 shmpl 112 20 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1840 0 438 46 0 46 46 0 8 0 ffsino 240 1840 0 438 83 0 83 83 0 8 0 nchpl 144 2603 0 1011 60 0 60 60 0 8 0 uvmvnodes 72 2054 0 0 38 0 38 38 0 8 0 vnodes 208 2054 0 0 109 0 109 109 0 8 0 namei 1024 7402 0 7401 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 0 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 6792 0 6791 8 7 1 7 0 8 0 plimitpl 152 33 0 26 1 0 1 1 0 8 0 sigapl 432 467 0 454 2 0 2 2 0 8 0 futexpl 56 11404 0 11404 1 0 1 1 0 8 1 knotepl 112 92 0 73 1 0 1 1 0 8 0 kqueuepl 104 221 0 219 4 0 4 4 0 8 3 pipepl 128 334 0 315 2 0 2 2 0 8 1 fdescpl 424 468 0 454 2 0 2 2 0 8 0 filepl 120 4240 0 4144 11 0 11 11 0 8 8 lockfpl 104 105 0 104 1 0 1 1 0 8 0 lockfspl 48 38 0 37 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 22 0 12 1 0 1 1 0 8 0 ucredpl 96 458 0 450 1 0 1 1 0 8 0 zombiepl 144 454 0 454 1 0 1 1 0 8 1 processpl 864 483 0 454 4 0 4 4 0 8 0 procpl 632 821 0 784 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 384 1029 0 1011 14 4 10 13 0 8 8 mcl64k 65536 18 0 18 2 1 1 1 0 8 1 mcl16k 16384 12 0 12 1 0 1 1 0 8 1 mcl12k 12288 16 0 15 1 0 1 1 0 8 0 mcl9k 9216 7 0 7 2 2 0 1 0 8 0 mcl8k 8192 10 0 9 2 1 1 1 0 8 0 mcl4k 4096 46 0 45 1 0 1 1 0 8 0 mcl2k2 2112 3 0 3 2 1 1 1 0 8 1 mcl2k 2048 70099 0 70046 22 14 8 18 0 8 1 mtagpl 80 20 0 4 2 1 1 1 0 8 0 mbufpl 256 114381 0 114198 22 4 18 18 0 8 2 bufpl 280 7591 0 2341 376 0 376 376 0 8 0 anonpl 16 82275 0 62316 101 4 97 98 0 62 15 amapchunkpl 152 2534 0 2385 15 8 7 11 0 158 0 amappl16 192 3213 0 2103 75 11 64 68 0 8 8 amappl15 184 137 0 132 1 0 1 1 0 8 0 amappl14 176 31 0 29 1 0 1 1 0 8 0 amappl13 168 132 0 131 1 0 1 1 0 8 0 amappl12 160 10 0 9 2 1 1 1 0 8 0 amappl11 152 95 0 80 1 0 1 1 0 8 0 amappl10 144 10 0 7 1 0 1 1 0 8 0 amappl9 136 579 0 575 1 0 1 1 0 8 0 amappl8 128 125 0 98 1 0 1 1 0 8 0 amappl7 120 106 0 94 1 0 1 1 0 8 0 amappl6 112 91 0 80 1 0 1 1 0 8 0 amappl5 104 153 0 143 1 0 1 1 0 8 0 amappl4 96 823 0 793 1 0 1 1 0 8 0 amappl3 88 137 0 127 1 0 1 1 0 8 0 amappl2 80 2972 0 2903 3 1 2 3 0 8 0 amappl1 72 18105 0 17690 27 18 9 20 0 8 0 amappl 80 1079 0 1033 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 21 0 2 1 0 1 1 0 8 0 uaddrrnd 24 474 0 454 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 474 0 454 1 0 1 1 0 8 0 vmmpekpl 168 7242 0 7217 2 0 2 2 0 8 0 vmmpepl 168 64989 0 62767 165 25 140 140 0 357 42 vmsppl 272 473 0 454 3 1 2 2 0 8 0 pdppl 4096 954 0 914 7 1 6 6 0 8 0 pvpl 32 214945 0 191967 226 6 220 224 0 265 32 pmappl 200 473 0 454 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 180 0 29 5 0 5 5 0 8 0