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(bfffffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a3c900) 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(fffffd80363d1a88,8020699f,ffff800017b7d360,ffff8000ffff2ee8) at ifioctl+0x169d sys/net/if.c:2148 sys_ioctl(ffff8000ffff2ee8,ffff800017b7d478,ffff800017b7d4c0) at sys_ioctl+0x5b9 syscall(ffff800017b7d540) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x99aa58450b0, count: -8 ddb> show registers rdi 0xffffffff8152520d in_delmulti+0x8d rsi 0x16ff4 acpi_pdirpa+0x2e5c rbp 0xffff800017b7d180 rbx 0 rdx 0x16ff5 acpi_pdirpa+0x2e5d rcx 0xffff800014957000 rax 0xffff800014957000 r8 0xffff800000a3c900 r9 0x5 r10 0x853e8a10a3eb3af r11 0x834a425b7a4db9ef r12 0 r13 0x3 r14 0xbfffffffffffffff r15 0x1 rip 0xffffffff8152520d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800017b7d120 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=167191 stat=onproc flags process=0 proc=4000000 pri=78, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3650,0xffffffff825654b8 process=0xffff8000ffff7450 user=0xffff800017b78000, vmspace=0xfffffd802d6f6998 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 45363 457574 29659 0 2 0 syz-executor.1 *45363 167191 29659 0 7 0x4000000 syz-executor.1 83080 257440 0 0 3 0x14200 bored sosplice 37189 8933 71184 0 3 0x2 biowait syz-executor.0 29659 71692 71184 0 3 0x82 nanosleep syz-executor.1 71184 440773 42221 0 3 0x82 thrsleep syz-fuzzer 71184 387705 42221 0 3 0x4000082 nanosleep syz-fuzzer 71184 220802 42221 0 3 0x4000082 kqread syz-fuzzer 71184 446598 42221 0 3 0x4000082 thrsleep syz-fuzzer 71184 255895 42221 0 3 0x4000082 thrsleep syz-fuzzer 71184 104192 42221 0 3 0x4000082 thrsleep syz-fuzzer 71184 307686 42221 0 3 0x4000082 thrsleep syz-fuzzer 71184 464026 42221 0 3 0x4000082 thrsleep syz-fuzzer 42221 347396 13083 0 3 0x10008a pause ksh 13083 407588 27939 0 3 0x92 select sshd 25788 156683 1 0 3 0x100083 ttyin getty 27939 22247 1 0 3 0x80 select sshd 93669 204349 94415 73 3 0x100090 kqread syslogd 94415 190921 1 0 3 0x100082 netio syslogd 87467 420724 1 77 2 0x100090 dhclient 21428 313604 1 0 2 0x80 dhclient 95888 500256 0 0 2 0x14200 zerothread 45392 126730 0 0 3 0x14200 aiodoned aiodoned 18706 418711 0 0 3 0x14200 syncer update 3600 18479 0 0 3 0x14200 cleaner cleaner 22151 333713 0 0 3 0x14200 reaper reaper 63708 476385 0 0 3 0x14200 pgdaemon pagedaemon 83947 37184 0 0 3 0x14200 bored crynlk 25723 396502 0 0 3 0x14200 bored crypto 30435 131013 0 0 3 0x40014200 acpi0 acpi0 51755 39729 0 0 3 0x14200 bored softnet 17179 302363 0 0 2 0x14200 systqmp 70443 433798 0 0 3 0x14200 bored systq 8058 395284 0 0 3 0x40014200 bored softclock 49216 251957 0 0 3 0x40014200 idle0 73211 296146 0 0 3 0x14200 bored smr 1 176177 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 9517 6993K 7635K 78643K 11944 0 pcb 13 8K 8K 78643K 133 0 rtable 118 4K 4K 78643K 455 0 ifaddr 86 16K 17K 78643K 168 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 49 0 iov 0 0K 20K 78643K 122 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1673 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 82 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 511 0 sigio 0 0K 0K 78643K 18 0 proc 48 38K 63K 78643K 471 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 36 0 in_multi 69 3K 3K 78643K 115 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 72 318K 318K 78643K 72 0 exec 0 0K 1K 78643K 245 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 128 103K 104K 78643K 2105 0 UVM aobj 30 2K 2K 78643K 33 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 91 0 NDP 14 0K 0K 78643K 36 0 temp 142 3015K 3652K 78643K 23541 0 kqueue 0 0K 0K 78643K 7 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 16 0 7 1 0 1 1 0 8 0 rtpcb 80 65 0 63 1 0 1 1 0 8 0 rtentry 112 103 0 57 2 0 2 2 0 8 0 unpcb 120 240 0 231 1 0 1 1 0 8 0 syncache 264 9 0 9 3 2 1 1 0 8 1 tcpqe 32 313 0 313 2 1 1 1 0 8 1 tcpcb 544 164 0 160 2 0 2 2 0 8 1 ipq 40 7 0 6 2 1 1 1 0 8 0 ipqe 40 215 0 180 2 1 1 1 0 8 0 inpcb 280 1535 0 1525 4 1 3 3 0 8 2 rttmr 72 1 0 0 1 0 1 1 0 8 0 nd6 48 12 0 10 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 8 0 8 2 2 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 492 0 250 19 2 17 17 0 8 0 art_table 32 494 0 250 3 0 3 3 0 8 0 art_node 16 100 0 56 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 80 0 70 1 0 1 1 0 8 0 shmpl 112 31 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2207 0 805 46 0 46 46 0 8 0 ffsino 240 2207 0 805 83 0 83 83 0 8 0 nchpl 144 3203 0 1589 61 0 61 61 0 8 1 uvmvnodes 72 2563 0 0 47 0 47 47 0 8 0 vnodes 208 2563 0 0 135 0 135 135 0 8 0 namei 1024 9030 0 9030 1 0 1 1 0 8 1 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 528 10 0 0 1 0 1 1 0 8 0 scxspl 192 9188 0 9187 11 9 2 7 0 8 1 plimitpl 152 46 0 39 1 0 1 1 0 8 0 sigapl 432 682 0 669 2 0 2 2 0 8 0 futexpl 56 14601 0 14601 1 0 1 1 0 8 1 knotepl 112 122 0 103 1 0 1 1 0 8 0 kqueuepl 104 153 0 151 1 0 1 1 0 8 0 pipepl 128 498 0 477 2 0 2 2 0 8 1 fdescpl 424 683 0 669 2 0 2 2 0 8 0 filepl 120 5623 0 5524 4 0 4 4 0 8 1 lockfpl 104 180 0 179 1 0 1 1 0 8 0 lockfspl 48 60 0 59 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 13 1 0 1 1 0 8 0 ucredpl 96 580 0 572 1 0 1 1 0 8 0 zombiepl 144 669 0 669 1 0 1 1 0 8 1 processpl 864 698 0 669 4 0 4 4 0 8 0 procpl 632 1355 0 1318 4 0 4 4 0 8 0 sosppl 128 16 0 16 3 2 1 1 0 8 1 sockpl 384 1848 0 1829 7 2 5 5 0 8 3 mcl64k 65536 44 0 39 2 1 1 1 0 8 0 mcl16k 16384 8 0 8 2 1 1 1 0 8 1 mcl12k 12288 17 0 17 3 2 1 1 0 8 1 mcl9k 9216 8 0 8 3 2 1 1 0 8 1 mcl8k 8192 16 0 16 1 0 1 1 0 8 1 mcl4k 4096 54 0 54 2 1 1 1 0 8 1 mcl2k2 2112 9 0 9 4 3 1 1 0 8 1 mcl2k 2048 71191 0 71135 23 15 8 17 0 8 0 mtagpl 80 39 0 16 2 1 1 1 0 8 0 mbufpl 256 117603 0 116948 63 7 56 56 0 8 6 bufpl 280 7616 0 2686 353 0 353 353 0 8 0 anonpl 16 96817 0 76657 105 8 97 98 0 62 14 amapchunkpl 152 3819 0 3652 27 6 21 21 0 158 14 amappl16 192 4356 0 3249 83 20 63 68 0 8 7 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 262 0 256 1 0 1 1 0 8 0 amappl12 160 249 0 247 1 0 1 1 0 8 0 amappl11 152 46 0 35 1 0 1 1 0 8 0 amappl10 144 14 0 13 1 0 1 1 0 8 0 amappl9 136 549 0 544 1 0 1 1 0 8 0 amappl8 128 127 0 98 1 0 1 1 0 8 0 amappl7 120 91 0 81 1 0 1 1 0 8 0 amappl6 112 55 0 47 1 0 1 1 0 8 0 amappl5 104 405 0 395 1 0 1 1 0 8 0 amappl4 96 671 0 642 1 0 1 1 0 8 0 amappl3 88 615 0 601 1 0 1 1 0 8 0 amappl2 80 4698 0 4626 3 1 2 3 0 8 0 amappl1 72 21307 0 20889 26 16 10 20 0 8 0 amappl 80 1597 0 1549 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 32 0 3 1 0 1 1 0 8 0 uaddrrnd 24 693 0 669 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 693 0 669 1 0 1 1 0 8 0 vmmpekpl 168 8254 0 8232 2 0 2 2 0 8 0 vmmpepl 168 88251 0 86023 137 29 108 129 0 357 6 vmsppl 272 692 0 669 2 0 2 2 0 8 0 pdppl 4096 1392 0 1348 7 1 6 6 0 8 0 pvpl 32 251738 0 228841 229 7 222 223 0 265 33 pmappl 200 692 0 669 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 214 0 30 6 0 6 6 0 8 0