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(bfff6ffffef7fffd) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b20000) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ae3800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000ae3800,6) at if_setrdomain+0x19a sys/net/if.c:1771 ifioctl(fffffd8065a1f4e0,8020699f,ffff80001d797b30,ffff80001e7b73f0) at ifioctl+0x169d sys/net/if.c:2031 sys_ioctl(ffff80001e7b73f0,ffff80001d797c48,ffff80001d797c90) at sys_ioctl+0x4a1 syscall(ffff80001d797d10) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x250f2737dc0, count: -8 ddb> show registers rdi 0xffff80001f9a2000 rsi 0x14247 acpi_pdirpa+0xaf rbp 0xffff80001d797950 rbx 0 rdx 0xffff80001f9a2000 rcx 0x14246 acpi_pdirpa+0xae rax 0xffffffff817ba21d in_delmulti+0x8d r8 0xffff800000b20000 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0xb0b7efe35645045b r12 0 r13 0x3 r14 0xbfff6ffffef7fffd r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d7978f0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=189325 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff80001e7b6f00,0xffffffff8280e530 process=0xffff80001e7c2b40 user=0xffff80001d792000, vmspace=0xfffffd806aa81aa0 estcpu=32, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 95622 482136 67371 0 2 0 syz-executor.1 *95622 189325 67371 0 7 0x4000000 syz-executor.1 79740 217259 0 0 3 0x14280 nfsidl nfsio 13719 27954 0 0 3 0x14280 nfsidl nfsio 49654 28948 0 0 3 0x14280 nfsidl nfsio 26979 405521 0 0 3 0x14280 nfsidl nfsio 39173 502728 0 0 3 0x14280 nfsidl nfsio 85706 465219 0 0 3 0x14280 nfsidl nfsio 39340 512761 0 0 3 0x14280 nfsidl nfsio 32082 69361 0 0 3 0x14280 nfsidl nfsio 59358 93991 0 0 3 0x14280 nfsidl nfsio 36165 26860 0 0 3 0x14280 nfsidl nfsio 5841 365536 0 0 3 0x14280 nfsidl nfsio 12168 56441 0 0 3 0x14280 nfsidl nfsio 36154 97876 0 0 3 0x14280 nfsidl nfsio 84272 463312 0 0 3 0x14280 nfsidl nfsio 3765 225171 0 0 3 0x14280 nfsidl nfsio 67069 141320 0 0 3 0x14280 nfsidl nfsio 17348 36441 0 0 3 0x14280 nfsidl nfsio 83331 403906 0 0 3 0x14280 nfsidl nfsio 90310 403308 0 0 3 0x14280 nfsidl nfsio 38050 350337 0 0 3 0x14280 nfsidl nfsio 67371 412188 94559 0 3 0x82 nanosleep syz-executor.1 29924 236816 0 0 3 0x14200 bored sosplice 1259 302735 94559 0 3 0x82 piperd syz-executor.0 94559 315315 96631 0 3 0x82 thrsleep syz-fuzzer 94559 98548 96631 0 3 0x4000082 nanosleep syz-fuzzer 94559 353921 96631 0 3 0x4000082 thrsleep syz-fuzzer 94559 263354 96631 0 3 0x4000082 thrsleep syz-fuzzer 94559 189405 96631 0 3 0x4000082 thrsleep syz-fuzzer 94559 193647 96631 0 2 0x4000002 syz-fuzzer 94559 229672 96631 0 3 0x4000082 thrsleep syz-fuzzer 96631 170555 55479 0 3 0x10008a pause ksh 55479 338016 57989 0 3 0x92 select sshd 61817 292737 1 0 3 0x100083 ttyin getty 57989 205693 1 0 3 0x80 select sshd 6163 328466 35725 73 3 0x100090 kqread syslogd 35725 424203 1 0 3 0x100082 netio syslogd 63980 144231 1 77 2 0x100090 dhclient 69572 238363 1 0 3 0x80 poll dhclient 9312 305712 0 0 3 0x14200 bored smr 75778 486728 0 0 2 0x14200 zerothread 4894 264555 0 0 3 0x14200 aiodoned aiodoned 82428 17916 0 0 3 0x14200 syncer update 51278 462282 0 0 3 0x14200 cleaner cleaner 82940 99415 0 0 3 0x14200 reaper reaper 94506 380654 0 0 3 0x14200 pgdaemon pagedaemon 30849 52961 0 0 3 0x14200 bored crynlk 73783 28249 0 0 3 0x14200 bored crypto 1726 59887 0 0 3 0x40014200 acpi0 acpi0 85794 410739 0 0 3 0x14200 bored softnet 99380 417143 0 0 2 0x14200 systqmp 64025 199209 0 0 3 0x14200 bored systq 83795 321722 0 0 3 0x40014200 bored softclock 68625 98869 0 0 3 0x40014200 idle0 1 55493 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 9505 6354K 6906K 78643K 13035 0 pcb 13 8K 8K 78643K 163 0 rtable 115 4K 7K 78643K 802 0 ifaddr 81 16K 16K 78643K 317 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 49 0 ioctlops 0 0K 4K 78643K 223 0 iov 0 0K 16K 78643K 125 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1919 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 16 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 356 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 1343 0 sigio 0 0K 0K 78643K 36 0 proc 51 38K 63K 78643K 522 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 84 0 in_multi 73 4K 4K 78643K 327 0 ether_multi 1 0K 0K 78643K 30 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 321 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 140 88K 93K 78643K 3880 0 UVM aobj 48 5K 5K 78643K 72 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 131 0 NDP 13 0K 0K 78643K 82 0 temp 133 3862K 3926K 78643K 18481 0 kqueue 3 4K 16K 78643K 45 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 14 0 6 1 0 1 1 0 8 0 rtpcb 88 734 0 731 1 0 1 1 0 8 0 rtentry 112 159 0 115 2 0 2 2 0 8 0 unpcb 120 641 0 632 1 0 1 1 0 8 0 syncache 272 17 0 17 8 7 1 1 0 8 1 tcpqe 32 78 0 78 2 2 0 1 0 8 0 tcpcb 592 1055 0 1050 13 11 2 4 0 8 1 ipq 40 4 0 2 3 2 1 1 0 8 0 ipqe 40 51 0 49 3 2 1 1 0 8 0 inpcb 296 2896 0 2886 9 7 2 2 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 59 0 55 1 0 1 1 0 8 0 pkpcb 40 12 0 12 4 3 1 1 0 8 1 ppxss 1136 4 0 4 4 4 0 1 0 8 0 pfrktable 1344 52 0 52 3 3 0 1 0 8 0 pftag 88 8 0 8 3 3 0 1 0 8 0 pfrule 1360 12 0 8 2 1 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 608 0 408 24 9 15 15 0 8 0 art_table 32 609 0 408 2 0 2 2 0 8 0 art_node 16 158 0 117 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 7 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 354 0 344 1 0 1 1 0 8 0 shmpl 112 69 0 25 2 0 2 2 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 3078 0 1692 88 0 88 88 0 8 0 ffsino 240 3078 0 1692 83 0 83 83 0 8 0 nchpl 144 5056 0 3478 60 0 60 60 0 8 0 uvmvnodes 72 3695 0 0 68 0 68 68 0 8 0 vnodes 208 3695 0 0 195 0 195 195 0 8 0 namei 1024 14077 0 14077 4 3 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 14 0 8 1 0 1 1 0 8 0 pfiaddrpl 120 16 0 16 3 3 0 1 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 200 14241 0 14241 9 8 1 1 0 8 1 plimitpl 152 76 0 69 1 0 1 1 0 8 0 sigapl 424 1544 0 1495 6 0 6 6 0 8 0 futexpl 56 25868 0 25868 4 3 1 1 0 8 1 knotepl 112 137 0 117 1 0 1 1 0 8 0 kqueuepl 152 170 0 166 1 0 1 1 0 8 0 pipepl 272 212 0 201 3 2 1 2 0 8 0 fdescpl 432 1509 0 1495 2 0 2 2 0 8 0 filepl 120 9903 0 9802 7 3 4 4 0 8 0 lockfpl 104 272 0 271 1 0 1 1 0 8 0 lockfspl 48 97 0 96 1 0 1 1 0 8 0 sessionpl 120 19 0 9 1 0 1 1 0 8 0 pgrppl 48 27 0 17 1 0 1 1 0 8 0 ucredpl 96 636 0 628 1 0 1 1 0 8 0 zombiepl 144 1495 0 1495 4 3 1 1 0 8 1 processpl 944 1544 0 1495 7 0 7 7 0 8 0 procpl 632 3089 0 3033 7 2 5 5 0 8 0 sosppl 144 22 0 22 6 6 0 1 0 8 0 sockpl 400 4288 0 4267 20 16 4 4 0 8 1 mcl64k 65536 578 0 578 75 75 0 65 0 8 0 mcl16k 16384 5 0 5 4 4 0 1 0 8 0 mcl12k 12288 32 0 32 18 17 1 1 0 8 1 mcl9k 9216 28 0 28 16 15 1 1 0 8 1 mcl8k 8192 43 0 43 13 13 0 1 0 8 0 mcl4k 4096 91 0 91 17 16 1 1 0 8 1 mcl2k2 2112 7 0 7 5 5 0 1 0 8 0 mcl2k 2048 96928 0 96880 17 9 8 14 0 8 1 mtagpl 96 143 0 141 4 2 2 2 0 8 1 mbufpl 256 164056 0 163910 89 63 26 41 0 8 0 bufpl 280 5000 0 115 349 0 349 349 0 8 0 anonpl 16 149003 0 130816 116 41 75 86 0 107 0 amapchunkpl 152 5956 0 5790 21 9 12 12 0 158 5 amappl16 192 7462 0 6457 92 40 52 63 0 8 1 amappl15 184 440 0 437 1 0 1 1 0 8 0 amappl14 176 552 0 549 1 0 1 1 0 8 0 amappl13 168 40 0 37 1 0 1 1 0 8 0 amappl12 160 26 0 24 1 0 1 1 0 8 0 amappl11 152 54 0 44 1 0 1 1 0 8 0 amappl10 144 21 0 15 1 0 1 1 0 8 0 amappl9 136 668 0 666 1 0 1 1 0 8 0 amappl8 128 652 0 618 3 1 2 2 0 8 0 amappl7 120 116 0 103 1 0 1 1 0 8 0 amappl6 112 27 0 19 1 0 1 1 0 8 0 amappl5 104 1433 0 1420 1 0 1 1 0 8 0 amappl4 96 466 0 441 1 0 1 1 0 8 0 amappl3 88 719 0 710 1 0 1 1 0 8 0 amappl2 80 11569 0 11500 2 0 2 2 0 8 0 amappl1 72 42385 0 41970 22 13 9 17 0 8 0 amappl 80 3329 0 3273 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 71 0 24 1 0 1 1 0 8 0 uaddrrnd 24 1523 0 1503 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1523 0 1503 1 0 1 1 0 8 0 vmmpekpl 168 12032 0 12006 2 0 2 2 0 8 0 vmmpepl 168 188788 0 186671 233 139 94 132 0 357 1 vmsppl 272 1522 0 1503 4 2 2 2 0 8 0 pdppl 4096 3052 0 3012 9 3 6 6 0 8 1 pvpl 32 420707 0 399410 281 101 180 201 0 265 7 pmappl 200 1522 0 1503 3 1 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 466 0 226 10 1 9 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(bfff6ffffef7fffd) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b20000) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ae3800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000ae3800,6) at if_setrdomain+0x19a sys/net/if.c:1771 ifioctl(fffffd8065a1f4e0,8020699f,ffff80001d797b30,ffff80001e7b73f0) at ifioctl+0x169d sys/net/if.c:2031 sys_ioctl(ffff80001e7b73f0,ffff80001d797c48,ffff80001d797c90) at sys_ioctl+0x4a1 syscall(ffff80001d797d10) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x250f2737dc0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(bfff6ffffef7fffd) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b20000) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ae3800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000ae3800,6) at if_setrdomain+0x19a sys/net/if.c:1771 ifioctl(fffffd8065a1f4e0,8020699f,ffff80001d797b30,ffff80001e7b73f0) at ifioctl+0x169d sys/net/if.c:2031 sys_ioctl(ffff80001e7b73f0,ffff80001d797c48,ffff80001d797c90) at sys_ioctl+0x4a1 syscall(ffff80001d797d10) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x250f2737dc0, count: -8