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(fffeffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b15900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000ac7000,6) at if_setrdomain+0x19a sys/net/if.c:1771 ifioctl(fffffd806632f960,8020699f,ffff80001d763590,ffff80001d6be508) at ifioctl+0x169d sys/net/if.c:2031 sys_ioctl(ffff80001d6be508,ffff80001d7636a8,ffff80001d7636f0) at sys_ioctl+0x4a1 syscall(ffff80001d763770) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9d09b54add0, count: -8 ddb> show registers rdi 0xffff80001f9a2000 rsi 0x19a34 acpi_pdirpa+0x589c rbp 0xffff80001d7633b0 rbx 0 rdx 0xffff80001f9a2000 rcx 0x19a33 acpi_pdirpa+0x589b rax 0xffffffff817ba21d in_delmulti+0x8d r8 0xffff800000b15900 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0x43feed288d80d948 r12 0 r13 0x3 r14 0xfffeffffffffffff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d763350 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=476833 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6bf650,0xffffffff8280e530 process=0xffff80001d6c1630 user=0xffff80001d75e000, vmspace=0xfffffd8057a8c9a0 estcpu=30, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 56698 387060 16275 0 2 0 syz-executor.1 *56698 476833 16275 0 7 0x4000000 syz-executor.1 98620 461222 0 0 3 0x14200 acct acct 75778 358818 95065 0 3 0x82 piperd syz-executor.0 85390 190219 0 0 3 0x14200 bored sosplice 16275 223639 95065 0 3 0x82 nanosleep syz-executor.1 95065 308418 69680 0 3 0x82 thrsleep syz-fuzzer 95065 343192 69680 0 3 0x4000082 nanosleep syz-fuzzer 95065 409601 69680 0 3 0x4000082 thrsleep syz-fuzzer 95065 151880 69680 0 3 0x4000082 thrsleep syz-fuzzer 95065 86948 69680 0 3 0x4000082 thrsleep syz-fuzzer 95065 320989 69680 0 2 0x4000002 syz-fuzzer 69680 138422 36578 0 3 0x10008a pause ksh 36578 98056 167 0 3 0x92 select sshd 97430 119086 1 0 3 0x100083 ttyin getty 167 460586 1 0 3 0x80 select sshd 84588 127899 27586 73 3 0x100090 kqread syslogd 27586 430082 1 0 3 0x100082 netio syslogd 12784 356024 1 77 2 0x100090 dhclient 22123 432949 1 0 3 0x80 poll dhclient 91402 464283 0 0 3 0x14200 bored smr 92495 168799 0 0 2 0x14200 zerothread 38168 498735 0 0 3 0x14200 aiodoned aiodoned 6079 468437 0 0 3 0x14200 syncer update 84289 30243 0 0 3 0x14200 cleaner cleaner 93649 178505 0 0 3 0x14200 reaper reaper 6151 510643 0 0 3 0x14200 pgdaemon pagedaemon 60041 280823 0 0 3 0x14200 bored crynlk 60044 133584 0 0 3 0x14200 bored crypto 87433 109393 0 0 3 0x40014200 acpi0 acpi0 5456 24145 0 0 3 0x14200 bored softnet 5651 101564 0 0 2 0x14200 systqmp 91462 411158 0 0 3 0x14200 bored systq 64778 353125 0 0 3 0x40014200 bored softclock 37667 182545 0 0 3 0x40014200 idle0 1 438854 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 9495 6342K 6724K 78643K 11212 0 pcb 13 8K 8K 78643K 83 0 rtable 93 5K 9K 78643K 584 0 ifaddr 79 16K 17K 78643K 232 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 38 0 ioctlops 0 0K 4K 78643K 94 0 iov 0 0K 12K 78643K 56 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1413 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 118 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 520 0 sigio 0 0K 0K 78643K 10 0 proc 49 38K 63K 78643K 426 0 subproc 32 2K 2K 78643K 55 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 44 0 in_multi 59 2K 3K 78643K 152 0 ether_multi 1 0K 0K 78643K 17 0 mrt 0 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 236 0 pfkey data 0 0K 1K 78643K 2 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 139 72K 72K 78643K 2041 0 UVM aobj 19 2K 2K 78643K 19 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 56 0 NDP 12 0K 0K 78643K 39 0 temp 105 3865K 3929K 78643K 4040 0 kqueue 3 4K 9K 78643K 15 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 6 1 0 1 1 0 8 0 rtpcb 88 31 0 29 1 0 1 1 0 8 0 rtentry 112 88 0 57 2 0 2 2 0 8 0 unpcb 120 236 0 227 1 0 1 1 0 8 0 syncache 272 6 0 6 2 2 0 1 0 8 0 tcpqe 32 501 0 501 1 1 0 1 0 8 0 tcpcb 592 632 0 626 7 6 1 4 0 8 0 ipq 40 3 0 3 1 1 0 1 0 8 0 ipqe 40 92 0 92 1 1 0 1 0 8 0 inpcb 296 923 0 912 4 3 1 2 0 8 0 rttmr 72 4 0 4 1 0 1 1 0 8 1 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 23 0 16 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pfrktable 1344 75 0 71 2 1 1 2 0 8 0 pftag 88 18 0 18 5 4 1 1 0 8 1 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 4 0 2 1 0 1 1 0 8 0 pfstate 328 2 0 1 1 0 1 1 0 8 0 pfrule 1360 24 0 14 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 343 0 141 16 3 13 15 0 8 0 art_table 32 344 0 141 2 0 2 2 0 8 0 art_node 16 79 0 45 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 112 0 102 1 0 1 1 0 8 0 shmpl 112 16 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2014 0 618 88 0 88 88 0 8 0 ffsino 240 2014 0 618 83 0 83 83 0 8 0 nchpl 144 3078 0 1492 60 0 60 60 0 8 0 uvmvnodes 72 2207 0 0 41 0 41 41 0 8 0 vnodes 208 2207 0 0 117 0 117 117 0 8 0 namei 1024 7918 0 7918 3 2 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 8 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 30 0 26 1 0 1 1 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 200 8350 0 8350 2 1 1 1 0 8 1 plimitpl 152 35 0 28 1 0 1 1 0 8 0 sigapl 424 705 0 675 4 0 4 4 0 8 0 futexpl 56 9580 0 9580 3 2 1 1 0 8 1 knotepl 112 86 0 66 1 0 1 1 0 8 0 kqueuepl 152 42 0 39 1 0 1 1 0 8 0 pipepl 272 143 0 131 2 1 1 2 0 8 0 fdescpl 432 689 0 675 2 0 2 2 0 8 0 filepl 120 4104 0 4001 4 0 4 4 0 8 0 lockfpl 104 112 0 111 1 0 1 1 0 8 0 lockfspl 48 40 0 39 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 10 1 0 1 1 0 8 0 ucredpl 96 269 0 262 1 0 1 1 0 8 0 zombiepl 144 675 0 675 3 2 1 1 0 8 1 processpl 944 705 0 675 4 0 4 4 0 8 0 procpl 632 1254 0 1218 4 0 4 4 0 8 0 sosppl 144 2 0 2 1 1 0 1 0 8 0 sockpl 400 1195 0 1174 10 7 3 4 0 8 0 mcl64k 65536 32 0 32 5 5 0 1 0 8 0 mcl16k 16384 6 0 6 2 2 0 1 0 8 0 mcl12k 12288 11 0 11 6 6 0 1 0 8 0 mcl9k 9216 8 0 8 5 5 0 1 0 8 0 mcl8k 8192 15 0 15 6 5 1 1 0 8 1 mcl4k 4096 46 0 46 5 5 0 1 0 8 0 mcl2k2 2112 2 0 2 2 2 0 1 0 8 0 mcl2k 2048 93407 0 93353 20 11 9 17 0 8 1 mtagpl 96 53 0 49 2 1 1 1 0 8 0 mbufpl 256 151938 0 151814 25 12 13 19 0 8 0 bufpl 280 3975 0 116 276 0 276 276 0 8 0 anonpl 16 90613 0 71218 120 25 95 97 0 107 14 amapchunkpl 152 3961 0 3738 33 14 19 23 0 158 10 amappl16 192 3495 0 2453 76 11 65 65 0 8 12 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 3 0 0 1 0 1 1 0 8 0 amappl13 168 156 0 150 1 0 1 1 0 8 0 amappl12 160 136 0 133 1 0 1 1 0 8 0 amappl11 152 49 0 40 1 0 1 1 0 8 0 amappl10 144 370 0 364 1 0 1 1 0 8 0 amappl9 136 360 0 358 1 0 1 1 0 8 0 amappl8 128 318 0 286 2 0 2 2 0 8 0 amappl7 120 464 0 453 1 0 1 1 0 8 0 amappl6 112 25 0 20 1 0 1 1 0 8 0 amappl5 104 537 0 525 1 0 1 1 0 8 0 amappl4 96 517 0 489 1 0 1 1 0 8 0 amappl3 88 207 0 199 1 0 1 1 0 8 0 amappl2 80 4675 0 4608 2 0 2 2 0 8 0 amappl1 72 24250 0 23834 22 13 9 17 0 8 0 amappl 80 1528 0 1470 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 18 0 0 1 0 1 1 0 8 0 uaddrrnd 24 697 0 677 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 697 0 677 1 0 1 1 0 8 0 vmmpekpl 168 7941 0 7916 2 0 2 2 0 8 0 vmmpepl 168 91137 0 88978 158 52 106 126 0 357 12 vmsppl 272 696 0 677 3 1 2 2 0 8 0 pdppl 4096 1400 0 1360 7 1 6 6 0 8 0 pvpl 32 249949 0 227545 268 53 215 223 0 265 28 pmappl 200 696 0 677 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 284 0 59 8 1 7 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fffeffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b15900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000ac7000,6) at if_setrdomain+0x19a sys/net/if.c:1771 ifioctl(fffffd806632f960,8020699f,ffff80001d763590,ffff80001d6be508) at ifioctl+0x169d sys/net/if.c:2031 sys_ioctl(ffff80001d6be508,ffff80001d7636a8,ffff80001d7636f0) at sys_ioctl+0x4a1 syscall(ffff80001d763770) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9d09b54add0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fffeffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b15900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000ac7000,6) at if_setrdomain+0x19a sys/net/if.c:1771 ifioctl(fffffd806632f960,8020699f,ffff80001d763590,ffff80001d6be508) at ifioctl+0x169d sys/net/if.c:2031 sys_ioctl(ffff80001d6be508,ffff80001d7636a8,ffff80001d7636f0) at sys_ioctl+0x4a1 syscall(ffff80001d763770) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9d09b54add0, count: -8