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(bffffffedfffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a0bb00) 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(fffffd802981dc38,8020699f,ffff800015971d30,ffff8000159653d8) at ifioctl+0x169d sys/net/if.c:2148 sys_ioctl(ffff8000159653d8,ffff800015971e48,ffff800015971e90) at sys_ioctl+0x5b9 syscall(ffff800015971f10) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa81de04a060, count: -8 ddb> show registers rdi 0xffffffff8152520d in_delmulti+0x8d rsi 0x195bf acpi_pdirpa+0x5427 rbp 0xffff800015971b50 rbx 0 rdx 0x195c0 acpi_pdirpa+0x5428 rcx 0xffff800016b51000 rax 0xffff800016b51000 r8 0xffff800000a0bb00 r9 0x5 r10 0x4845c0e4daac7190 r11 0x4f4476e2463f7db5 r12 0 r13 0x3 r14 0xbffffffedfffffff r15 0x1 rip 0xffffffff8152520d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800015971af0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=304073 stat=onproc flags process=0 proc=4000000 pri=77, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800015964780,0xffffffff825654b8 process=0xffff8000ffff6010 user=0xffff80001596c000, vmspace=0xfffffd802ddfd998 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 91274 168190 71958 0 2 0 syz-executor.0 *91274 304073 71958 0 7 0x4000000 syz-executor.0 7351 294279 60200 0 2 0 syz-executor.1 7351 189906 60200 0 3 0x4000080 fsleep syz-executor.1 60200 347967 1172 0 3 0x82 nanosleep syz-executor.1 81563 259234 0 0 3 0x14200 bored sosplice 71958 373190 1172 0 3 0x82 nanosleep syz-executor.0 1172 367426 80799 0 3 0x82 thrsleep syz-fuzzer 1172 397396 80799 0 3 0x4000082 thrsleep syz-fuzzer 1172 255114 80799 0 3 0x4000082 thrsleep syz-fuzzer 1172 206490 80799 0 3 0x4000082 thrsleep syz-fuzzer 1172 511915 80799 0 3 0x4000082 thrsleep syz-fuzzer 1172 407502 80799 0 3 0x4000082 kqread syz-fuzzer 1172 257062 80799 0 3 0x4000082 thrsleep syz-fuzzer 1172 336997 80799 0 3 0x4000082 thrsleep syz-fuzzer 80799 293429 22707 0 3 0x10008a pause ksh 22707 490255 70685 0 3 0x92 select sshd 10902 100864 1 0 3 0x100083 ttyin getty 70685 390973 1 0 3 0x80 select sshd 25712 363340 85391 73 3 0x100090 kqread syslogd 85391 193126 1 0 3 0x100082 netio syslogd 72876 421344 1 77 2 0x100090 dhclient 88690 469592 1 0 3 0x80 poll dhclient 91857 365177 0 0 2 0x14200 zerothread 47025 24613 0 0 3 0x14200 aiodoned aiodoned 5480 437543 0 0 3 0x14200 syncer update 70146 194756 0 0 3 0x14200 cleaner cleaner 41419 23721 0 0 3 0x14200 reaper reaper 79928 150868 0 0 3 0x14200 pgdaemon pagedaemon 67428 116701 0 0 3 0x14200 bored crynlk 82783 340171 0 0 3 0x14200 bored crypto 46247 304676 0 0 3 0x40014200 acpi0 acpi0 58043 312529 0 0 3 0x14200 bored softnet 46106 277264 0 0 2 0x14200 systqmp 60914 210807 0 0 3 0x14200 bored systq 34987 66863 0 0 3 0x40014200 bored softclock 91730 490093 0 0 3 0x40014200 idle0 88236 306195 0 0 3 0x14200 bored smr 1 19783 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 9525 6736K 6792K 78643K 11279 0 pcb 13 8K 8K 78643K 96 0 rtable 98 3K 3K 78643K 341 0 ifaddr 78 16K 16K 78643K 100 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 28 0 iov 0 0K 32K 78643K 66 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1539 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 1K 78643K 199 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 6 17K 25K 78643K 333 0 sigio 0 0K 0K 78643K 2 0 proc 49 38K 63K 78643K 434 0 subproc 32 2K 2K 78643K 57 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 35 0 in_multi 78 3K 3K 78643K 116 0 ether_multi 1 0K 0K 78643K 1 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 60 265K 265K 78643K 60 0 exec 0 0K 1K 78643K 234 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 117 38K 47K 78643K 1696 0 UVM aobj 81 3K 3K 78643K 85 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 68 0 NDP 11 0K 0K 78643K 23 0 temp 129 3014K 3078K 78643K 25359 0 kqueue 0 0K 0K 78643K 1 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 13 0 9 1 0 1 1 0 8 0 rtpcb 80 49 0 46 1 0 1 1 0 8 0 rtentry 112 87 0 48 2 0 2 2 0 8 0 unpcb 120 224 0 211 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 457 0 457 1 1 0 1 0 8 0 tcpcb 544 278 0 272 5 3 2 3 0 8 1 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 44 0 44 1 1 0 1 0 8 0 inpcb 280 580 0 570 6 3 3 3 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 48 11 0 8 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 403 0 182 16 2 14 15 0 8 0 art_table 32 404 0 182 2 0 2 2 0 8 0 art_node 16 86 0 44 1 0 1 1 0 8 0 sysvmsgpl 40 56 0 27 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 195 0 185 1 0 1 1 0 8 0 shmpl 112 83 0 4 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1920 0 520 46 0 46 46 0 8 0 ffsino 240 1920 0 520 83 0 83 83 0 8 0 nchpl 144 2691 0 1089 60 0 60 60 0 8 0 uvmvnodes 72 2155 0 0 40 0 40 40 0 8 0 vnodes 208 2155 0 0 114 0 114 114 0 8 0 namei 1024 8214 0 8214 2 1 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 2 1 0 1 1 0 8 0 scxspl 192 7398 0 7398 9 8 1 7 0 8 1 plimitpl 152 54 0 47 1 0 1 1 0 8 0 sigapl 432 501 0 487 2 0 2 2 0 8 0 futexpl 56 10269 0 10268 2 1 1 1 0 8 0 knotepl 112 81 0 62 1 0 1 1 0 8 0 kqueuepl 104 73 0 71 1 0 1 1 0 8 0 pipepl 128 340 0 319 4 2 2 2 0 8 0 fdescpl 424 502 0 487 2 0 2 2 0 8 0 filepl 120 4345 0 4233 7 2 5 5 0 8 1 lockfpl 104 152 0 151 1 0 1 1 0 8 0 lockfspl 48 58 0 57 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 34 0 24 1 0 1 1 0 8 0 ucredpl 96 1038 0 1031 1 0 1 1 0 8 0 zombiepl 144 487 0 487 2 1 1 1 0 8 1 processpl 864 517 0 487 4 0 4 4 0 8 0 procpl 632 917 0 878 4 0 4 4 0 8 0 sosppl 128 7 0 7 3 3 0 1 0 8 0 sockpl 384 862 0 836 9 5 4 6 0 8 1 mcl64k 65536 24 0 24 1 0 1 1 0 8 1 mcl16k 16384 3 0 3 1 1 0 1 0 8 0 mcl12k 12288 10 0 10 3 2 1 1 0 8 1 mcl9k 9216 9 0 9 2 1 1 1 0 8 1 mcl8k 8192 16 0 16 2 1 1 1 0 8 1 mcl4k 4096 37 0 37 3 2 1 1 0 8 1 mcl2k2 2112 8 0 8 3 2 1 1 0 8 1 mcl2k 2048 68895 0 68831 24 15 9 19 0 8 0 mtagpl 80 18 0 13 2 1 1 1 0 8 0 mbufpl 256 111930 0 111744 28 6 22 25 0 8 4 bufpl 280 7214 0 2269 354 0 354 354 0 8 0 anonpl 16 75615 0 55130 108 12 96 97 0 62 13 amapchunkpl 152 3280 0 3129 21 14 7 20 0 158 0 amappl16 192 2933 0 1792 79 15 64 68 0 8 6 amappl15 184 60 0 55 1 0 1 1 0 8 0 amappl14 176 106 0 103 1 0 1 1 0 8 0 amappl12 160 10 0 9 2 1 1 1 0 8 0 amappl11 152 139 0 128 1 0 1 1 0 8 0 amappl10 144 142 0 139 1 0 1 1 0 8 0 amappl9 136 575 0 571 1 0 1 1 0 8 0 amappl8 128 136 0 108 1 0 1 1 0 8 0 amappl7 120 233 0 219 1 0 1 1 0 8 0 amappl6 112 130 0 123 1 0 1 1 0 8 0 amappl5 104 149 0 138 1 0 1 1 0 8 0 amappl4 96 715 0 690 1 0 1 1 0 8 0 amappl3 88 204 0 195 1 0 1 1 0 8 0 amappl2 80 3168 0 3091 3 1 2 3 0 8 0 amappl1 72 18634 0 18200 25 15 10 20 0 8 0 amappl 80 1184 0 1137 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 84 0 4 2 0 2 2 0 8 0 uaddrrnd 24 506 0 489 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 506 0 489 1 0 1 1 0 8 0 vmmpekpl 168 7428 0 7406 2 0 2 2 0 8 0 vmmpepl 168 68317 0 65971 149 29 120 140 0 357 18 vmsppl 272 505 0 489 2 0 2 2 0 8 0 pdppl 4096 1018 0 980 6 1 5 6 0 8 0 pvpl 32 211110 0 187507 231 14 217 219 0 265 26 pmappl 200 505 0 489 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 179 0 34 5 0 5 5 0 8 0