kernel: protection fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace in_delmulti(bfffbfffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a59f00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000a29000) at in_ifdetach+0x74 sys/netinet/in.c:969 if_setrdomain(ffff800000a29000,a) at if_setrdomain+0x19a sys/net/if.c:1888 ifioctl(fffffd8075ff44a0,8020699f,ffff800023bc3bc0,ffff800020adf3e0) at ifioctl+0x16ad sys/net/if.c:2148 sys_ioctl(ffff800020adf3e0,ffff800023bc3cd8,ffff800023bc3d20) at sys_ioctl+0x5b9 syscall(ffff800023bc3da0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023bc3da0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x93b4f884650, count: -8 ddb{1}> show registers rdi 0xffffffff81eee24d in_delmulti+0x8d rsi 0x2d76c acpi_pdirpa+0x195d4 rbp 0xffff800023bc39e0 rbx 0 rdx 0x2d76d acpi_pdirpa+0x195d5 rcx 0xffff800021b94000 rax 0xffff800021b94000 r8 0xffffffff81342423 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0x9504aec29119394 r12 0 r13 0x3 r14 0xbfffbfffffffffff r15 0x1 rip 0xffffffff81eee24d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023bc3980 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=172072 stat=onproc flags process=0 proc=4000000 pri=73, usrpri=73, nice=20 forw=0xffffffffffffffff, list=0xffff800020ade298,0xffffffff82634898 process=0xffff800020aedc00 user=0xffff800023bbe000, vmspace=0xfffffd8064a898b0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86642 235647 10072 0 2 0 syz-executor.1 *86642 172072 10072 0 7 0x4000000 syz-executor.1 54094 283670 65159 60929 3 0x90 nanosleep syz-executor.0 54094 487591 65159 60929 3 0x4000090 lockf syz-executor.0 54094 212300 65159 60929 3 0x4000090 fsleep syz-executor.0 10072 147865 61273 0 3 0x82 nanosleep syz-executor.1 47953 133633 0 0 3 0x14200 bored sosplice 65159 131899 61273 0 3 0x82 nanosleep syz-executor.0 61273 241880 31838 0 3 0x82 thrsleep syz-fuzzer 61273 360386 31838 0 3 0x4000082 nanosleep syz-fuzzer 61273 235309 31838 0 3 0x4000082 thrsleep syz-fuzzer 61273 113777 31838 0 3 0x4000082 thrsleep syz-fuzzer 61273 483501 31838 0 3 0x4000082 thrsleep syz-fuzzer 61273 373586 31838 0 3 0x4000082 thrsleep syz-fuzzer 61273 14414 31838 0 3 0x4000082 thrsleep syz-fuzzer 61273 179235 31838 0 3 0x4000082 thrsleep syz-fuzzer 61273 43219 31838 0 3 0x4000082 thrsleep syz-fuzzer 61273 392061 31838 0 3 0x4000082 kqread syz-fuzzer 31838 110371 97837 0 3 0x10008a pause ksh 97837 164625 13417 0 3 0x92 select sshd 49163 329561 1 0 3 0x100083 ttyin getty 13417 96580 1 0 3 0x80 select sshd 51089 302799 41562 74 3 0x100092 bpf pflogd 41562 103124 1 0 3 0x80 netio pflogd 99452 80317 4923 73 3 0x100090 kqread syslogd 4923 66006 1 0 3 0x100082 netio syslogd 57515 350055 1 77 7 0x100090 dhclient 66417 427823 1 0 3 0x80 poll dhclient 52464 307167 0 0 2 0x14200 zerothread 61666 341493 0 0 3 0x14200 aiodoned aiodoned 74340 295210 0 0 3 0x14200 syncer update 76792 295195 0 0 3 0x14200 cleaner cleaner 3109 442850 0 0 3 0x14200 reaper reaper 2214 495793 0 0 3 0x14200 pgdaemon pagedaemon 96013 183338 0 0 3 0x14200 bored crynlk 16531 489769 0 0 3 0x14200 bored crypto 12243 64320 0 0 3 0x40014200 acpi0 acpi0 55937 283026 0 0 3 0x40014200 idle1 21655 519806 0 0 3 0x14200 bored softnet 96761 336445 0 0 2 0x14200 systqmp 28833 505762 0 0 3 0x14200 bored systq 18254 389633 0 0 3 0x40014200 bored softclock 69145 457307 0 0 3 0x40014200 idle0 7287 80677 0 0 3 0x14200 bored smr 1 507649 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 86642 (syz-executor.1) thread 0xffff800020adf3e0 (172072) exclusive rwlock netlock r = 0 (0xffffffff82495598) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 ifioctl+0x16a0 sys/net/if.c:2148 #2 sys_ioctl+0x5b9 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826563c0) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9552 6617K 7904K 78643K 12167 0 pcb 27 9K 9K 78643K 86 0 rtable 95 4K 4K 78643K 381 0 ifaddr 85 15K 15K 78643K 161 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1487 0 iov 0 0K 16K 78643K 64 0 mount 1 1K 1K 78643K 1 0 vnodes 1242 78K 78K 78643K 1671 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 5K 78643K 11 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 32 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 6 17K 25K 78643K 294 0 sigio 2 0K 0K 78643K 28 0 proc 60 63K 83K 78643K 529 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 27 0 in_multi 48 2K 2K 78643K 88 0 ether_multi 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 54 238K 238K 78643K 54 0 exec 0 0K 1K 78643K 266 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 129 87K 87K 78643K 1977 0 UVM aobj 31 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 33 0 NDP 15 0K 0K 78643K 36 0 temp 151 3028K 3091K 78643K 16189 0 kqueue 1 0K 0K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 10 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 41 0 39 1 0 1 1 0 8 0 rtentry 112 69 0 33 2 0 2 2 0 8 0 unpcb 120 164 0 145 1 0 1 1 0 8 0 syncache 264 7 0 7 2 1 1 1 0 8 1 tcpqe 32 224 0 224 3 2 1 1 0 8 1 tcpcb 544 105 0 101 2 0 2 2 0 8 1 inpcb 280 342 0 320 2 0 2 2 0 8 0 nd6 48 9 0 6 1 0 1 1 0 8 0 ppxss 1128 9 0 9 1 0 1 1 0 8 1 pffrag 232 5 0 5 1 0 1 1 0 482 1 pffrnode 88 5 0 5 1 0 1 1 0 8 1 pffrent 40 182 0 182 1 0 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 41 0 6 1 0 1 1 0 8 0 pfstkey 112 41 0 6 1 0 1 1 0 8 0 pfstate 328 41 0 6 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 328 0 128 15 1 14 14 0 8 0 art_table 32 329 0 128 2 0 2 2 0 8 0 art_node 16 68 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 14 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 28 0 18 1 0 1 1 0 8 0 shmpl 112 31 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1836 0 435 46 0 46 46 0 8 0 ffsino 272 1836 0 435 94 0 94 94 0 8 0 nchpl 144 2459 0 851 61 0 61 61 0 8 0 uvmvnodes 72 2244 0 0 41 0 41 41 0 8 0 vnodes 208 2244 0 0 119 0 119 119 0 8 0 namei 1024 7308 0 7308 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 560 11 0 4 1 0 1 1 0 8 0 scxspl 192 8448 0 8448 8 7 1 7 0 8 1 plimitpl 152 31 0 23 1 0 1 1 0 8 0 sigapl 432 487 0 471 3 1 2 3 0 8 0 futexpl 56 5915 0 5914 1 0 1 1 0 8 0 knotepl 112 131 0 109 1 0 1 1 0 8 0 kqueuepl 104 106 0 98 1 0 1 1 0 8 0 pipepl 160 314 0 291 3 1 2 2 0 8 1 fdescpl 488 488 0 471 3 0 3 3 0 8 0 filepl 152 3534 0 3395 7 0 7 7 0 8 1 lockfpl 104 172 0 169 1 0 1 1 0 8 0 lockfspl 48 45 0 43 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 340 0 330 1 0 1 1 0 8 0 zombiepl 144 471 0 471 1 0 1 1 0 8 1 processpl 896 504 0 471 4 0 4 4 0 8 0 procpl 632 1103 0 1058 5 0 5 5 0 8 0 srpgc 64 4 0 2 1 0 1 1 0 8 0 sosppl 128 3 0 3 1 0 1 1 0 8 1 sockpl 384 554 0 511 5 0 5 5 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 183 0 0 22 0 22 22 0 8 0 mtagpl 80 18 0 0 1 0 1 1 0 8 0 mbufpl 256 310 0 0 19 0 19 19 0 8 0 bufpl 280 7023 0 1355 405 0 405 405 0 8 0 anonpl 16 73379 0 55748 99 4 95 98 0 125 11 amapchunkpl 152 2798 0 2647 9 1 8 8 0 158 1 amappl16 192 2906 0 1740 71 5 66 69 0 8 7 amappl15 184 70 0 65 1 0 1 1 0 8 0 amappl14 176 52 0 49 1 0 1 1 0 8 0 amappl13 168 3 0 1 1 0 1 1 0 8 0 amappl12 160 92 0 91 1 0 1 1 0 8 0 amappl11 152 61 0 46 1 0 1 1 0 8 0 amappl10 144 23 0 18 1 0 1 1 0 8 0 amappl9 136 632 0 629 1 0 1 1 0 8 0 amappl8 128 158 0 129 2 0 2 2 0 8 0 amappl7 120 129 0 113 1 0 1 1 0 8 0 amappl6 112 70 0 62 1 0 1 1 0 8 0 amappl5 104 235 0 221 1 0 1 1 0 8 0 amappl4 96 665 0 627 2 1 1 2 0 8 0 amappl3 88 225 0 215 1 0 1 1 0 8 0 amappl2 80 2846 0 2762 3 1 2 3 0 8 0 amappl1 72 21332 0 20875 26 16 10 20 0 8 0 amappl 80 1388 0 1336 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 2 1 0 1 1 0 8 0 uaddrrnd 24 499 0 475 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 499 0 475 1 0 1 1 0 8 0 vmmpekpl 168 7933 0 7902 2 0 2 2 0 8 0 vmmpepl 168 73183 0 70715 164 18 146 146 0 357 38 vmsppl 368 498 0 475 3 0 3 3 0 8 0 pdppl 4096 1005 0 957 7 0 7 7 0 8 0 pvpl 32 245072 0 223901 223 3 220 223 0 265 28 pmappl 232 498 0 475 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 175 0 4 5 0 5 5 0 8 0