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(bf7fffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ba9800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b45000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b45000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000b45000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd8053849330,80206979,ffff80001f24b6c0,ffff80001f1b4790) at ifioctl+0x3de sys/net/if.c:1821 sys_ioctl(ffff80001f1b4790,ffff80001f24b7d8,ffff80001f24b820) at sys_ioctl+0x4a1 syscall(ffff80001f24b8a0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ee5660ba00, count: -9 ddb> show registers rdi 0xffff80001d7a4000 rsi 0x16d7b acpi_pdirpa+0x2be3 rbp 0xffff80001f24b4a0 rbx 0 rdx 0xffff80001d7a4000 rcx 0x16d7a acpi_pdirpa+0x2be2 rax 0xffffffff817ba21d in_delmulti+0x8d r8 0xffff800000ba9800 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0x89a59a862a3d79b7 r12 0 r13 0x3 r14 0xbf7fffffffffffff r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001f24b440 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.1) pid=203196 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff80001f1b4518,0xffff80001f1b4a18 process=0xffff80001d6ec030 user=0xffff80001f246000, vmspace=0xfffffd8057cbd230 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97583 331720 99645 0 2 0 syz-executor.0 97583 46543 99645 0 2 0x4000000 syz-executor.0 65203 84398 47007 0 3 0x80 nanosleep syz-executor.1 *65203 203196 47007 0 7 0x4000000 syz-executor.1 47007 208434 50462 0 3 0x82 nanosleep syz-executor.1 34449 369693 0 0 3 0x14280 nfsidl nfsio 83682 357762 0 0 3 0x14280 nfsidl nfsio 57169 34791 0 0 3 0x14280 nfsidl nfsio 79740 329107 0 0 3 0x14280 nfsidl nfsio 15766 183017 0 0 3 0x14280 nfsidl nfsio 97855 88242 0 0 3 0x14280 nfsidl nfsio 63416 499954 0 0 3 0x14280 nfsidl nfsio 1707 296936 0 0 3 0x14280 nfsidl nfsio 22850 20935 0 0 3 0x14280 nfsidl nfsio 73144 212865 0 0 3 0x14280 nfsidl nfsio 24625 339866 0 0 3 0x14280 nfsidl nfsio 70716 356944 0 0 3 0x14280 nfsidl nfsio 99404 507031 0 0 3 0x14280 nfsidl nfsio 95595 180798 0 0 3 0x14280 nfsidl nfsio 89890 514856 0 0 3 0x14280 nfsidl nfsio 87289 410968 0 0 3 0x14280 nfsidl nfsio 88524 217452 0 0 3 0x14280 nfsidl nfsio 84660 123260 0 0 3 0x14280 nfsidl nfsio 64647 261448 0 0 3 0x14280 nfsidl nfsio 19367 496789 0 0 3 0x14280 nfsidl nfsio 50191 200410 0 0 3 0x14200 bored sosplice 10147 147401 0 0 3 0x14200 acct acct 99645 512249 50462 0 3 0x82 nanosleep syz-executor.0 50462 194642 36350 0 3 0x82 thrsleep syz-fuzzer 50462 267998 36350 0 3 0x4000082 thrsleep syz-fuzzer 50462 21098 36350 0 3 0x4000082 thrsleep syz-fuzzer 50462 521384 36350 0 3 0x4000082 thrsleep syz-fuzzer 50462 216741 36350 0 3 0x4000082 thrsleep syz-fuzzer 50462 278318 36350 0 3 0x4000082 thrsleep syz-fuzzer 50462 291747 36350 0 3 0x4000082 kqread syz-fuzzer 36350 250785 42728 0 3 0x10008a pause ksh 42728 466444 45488 0 3 0x92 select sshd 52349 180828 1 0 3 0x100083 ttyin getty 45488 159985 1 0 3 0x80 select sshd 27698 384385 61138 73 3 0x100090 kqread syslogd 61138 147659 1 0 3 0x100082 netio syslogd 85726 140790 1 77 3 0x100090 poll dhclient 40368 75436 1 0 3 0x80 poll dhclient 90963 166966 0 0 3 0x14200 bored smr 84590 373314 0 0 2 0x14200 zerothread 3907 77470 0 0 3 0x14200 aiodoned aiodoned 76176 452264 0 0 3 0x14200 syncer update 96553 374909 0 0 3 0x14200 cleaner cleaner 60953 174434 0 0 3 0x14200 reaper reaper 583 73867 0 0 3 0x14200 pgdaemon pagedaemon 67354 309805 0 0 3 0x14200 bored crynlk 16845 373202 0 0 3 0x14200 bored crypto 40582 256650 0 0 3 0x40014200 acpi0 acpi0 21870 460026 0 0 3 0x14200 bored softnet 31537 251224 0 0 2 0x14200 systqmp 11912 95098 0 0 3 0x14200 bored systq 98404 125438 0 0 3 0x40014200 bored softclock 90212 282197 0 0 3 0x40014200 idle0 1 207807 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 9511 6362K 7259K 78643K 14414 0 pcb 13 8K 8K 78643K 147 0 rtable 86 4K 8K 78643K 855 0 ifaddr 92 19K 20K 78643K 374 0 sysctl 2 0K 1K 78643K 4 0 counters 21 16K 16K 78643K 47 0 ioctlops 0 0K 4K 78643K 168 0 iov 0 0K 16K 78643K 102 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 2216 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 248 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 6 17K 25K 78643K 1054 0 sigio 0 0K 0K 78643K 28 0 proc 49 38K 63K 78643K 465 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 58 0 in_multi 93 4K 4K 78643K 207 0 ether_multi 1 0K 0K 78643K 21 0 mrt 0 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 79 360K 360K 78643K 79 0 exec 0 0K 1K 78643K 295 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 155 73K 73K 78643K 3440 0 UVM aobj 52 2K 3K 78643K 62 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 129 0 NDP 13 0K 0K 78643K 56 0 temp 134 3866K 3930K 78643K 50481 0 kqueue 3 4K 14K 78643K 48 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 7 1 0 1 1 0 8 0 rtpcb 88 79 0 77 1 0 1 1 0 8 0 rtentry 112 130 0 100 2 0 2 2 0 8 0 unpcb 120 417 0 408 1 0 1 1 0 8 0 syncache 272 14 0 14 6 5 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 592 287 0 275 5 3 2 2 0 8 1 ipq 40 44 0 44 2 2 0 1 0 8 0 ipqe 40 129 0 129 2 2 0 1 0 8 0 inpcb 296 1239 0 1228 4 2 2 2 0 8 1 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 24 0 20 1 0 1 1 0 8 0 pkpcb 40 12 0 12 3 3 0 1 0 8 0 ppxss 1136 3 0 3 3 3 0 1 0 8 0 pfrktable 1344 129 0 126 2 1 1 1 0 8 0 pftag 88 23 0 20 2 1 1 1 0 8 0 pfqueue 264 2 0 0 1 0 1 1 0 8 0 pfrule 1360 37 0 21 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 476 0 332 17 7 10 15 0 8 0 art_table 32 477 0 332 2 0 2 2 0 8 0 art_node 16 104 0 78 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 2 1 0 1 1 0 8 0 semapl 112 246 0 236 1 0 1 1 0 8 0 shmpl 112 59 0 10 2 0 2 2 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 2900 0 1511 88 0 88 88 0 8 0 ffsino 240 2900 0 1511 83 0 83 83 0 8 0 nchpl 144 4669 0 3077 60 0 60 60 0 8 0 uvmvnodes 72 3805 0 0 70 0 70 70 0 8 0 vnodes 208 3805 0 0 201 0 201 201 0 8 0 namei 1024 13665 0 13665 2 1 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 38 0 38 5 5 0 1 0 8 0 scxspl 200 14301 0 14301 1 0 1 1 0 8 1 plimitpl 152 61 0 54 1 0 1 1 0 8 0 sigapl 424 1259 0 1208 6 0 6 6 0 8 0 futexpl 56 20946 0 20946 2 1 1 1 0 8 1 knotepl 112 156 0 136 2 1 1 2 0 8 0 kqueuepl 152 126 0 123 1 0 1 1 0 8 0 pipepl 272 167 0 156 2 1 1 2 0 8 0 fdescpl 432 1223 0 1208 2 0 2 2 0 8 0 filepl 120 7332 0 7233 4 0 4 4 0 8 0 lockfpl 104 629 0 628 1 0 1 1 0 8 0 lockfspl 48 208 0 207 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 26 0 16 1 0 1 1 0 8 0 ucredpl 96 1072 0 1064 1 0 1 1 0 8 0 zombiepl 144 1208 0 1208 1 0 1 1 0 8 1 processpl 944 1259 0 1208 7 0 7 7 0 8 0 procpl 632 2638 0 2579 6 0 6 6 0 8 0 sosppl 144 14 0 14 4 3 1 1 0 8 1 sockpl 400 1750 0 1728 6 3 3 4 0 8 0 mcl64k 65536 34 0 34 4 3 1 1 0 8 1 mcl16k 16384 8 0 8 3 2 1 1 0 8 1 mcl12k 12288 25 0 25 5 4 1 1 0 8 1 mcl9k 9216 13 0 13 2 2 0 1 0 8 0 mcl8k 8192 46 0 46 3 2 1 1 0 8 1 mcl4k 4096 120 0 120 3 2 1 1 0 8 1 mcl2k2 2112 11 0 11 4 4 0 1 0 8 0 mcl2k 2048 94872 0 94821 17 9 8 12 0 8 0 mtagpl 96 535 0 330 9 1 8 8 0 8 1 mbufpl 256 160944 0 160368 161 109 52 149 0 8 2 bufpl 280 5501 0 147 383 0 383 383 0 8 0 anonpl 16 130876 0 112734 106 16 90 90 0 107 11 amapchunkpl 152 6046 0 5830 33 20 13 22 0 158 4 amappl16 192 5999 0 4963 71 11 60 60 0 8 8 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 2 0 0 1 0 1 1 0 8 0 amappl13 168 35 0 31 1 0 1 1 0 8 0 amappl12 160 1028 0 1022 1 0 1 1 0 8 0 amappl11 152 74 0 62 1 0 1 1 0 8 0 amappl10 144 13 0 10 1 0 1 1 0 8 0 amappl9 136 352 0 351 1 0 1 1 0 8 0 amappl8 128 374 0 316 2 0 2 2 0 8 0 amappl7 120 108 0 98 1 0 1 1 0 8 0 amappl6 112 31 0 22 1 0 1 1 0 8 0 amappl5 104 2154 0 2140 1 0 1 1 0 8 0 amappl4 96 462 0 430 1 0 1 1 0 8 0 amappl3 88 162 0 153 1 0 1 1 0 8 0 amappl2 80 8940 0 8867 2 0 2 2 0 8 0 amappl1 72 37347 0 36915 23 14 9 17 0 8 0 amappl 80 2896 0 2838 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 61 0 10 1 0 1 1 0 8 0 uaddrrnd 24 1229 0 1208 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1229 0 1208 1 0 1 1 0 8 0 vmmpekpl 168 10731 0 10698 2 0 2 2 0 8 0 vmmpepl 168 156791 0 154491 161 53 108 137 0 357 8 vmsppl 272 1228 0 1208 3 1 2 2 0 8 0 pdppl 4096 2464 0 2422 7 1 6 6 0 8 0 pvpl 32 366994 0 345674 241 32 209 209 0 265 27 pmappl 200 1228 0 1208 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 413 0 149 11 1 10 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(bf7fffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ba9800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b45000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b45000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000b45000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd8053849330,80206979,ffff80001f24b6c0,ffff80001f1b4790) at ifioctl+0x3de sys/net/if.c:1821 sys_ioctl(ffff80001f1b4790,ffff80001f24b7d8,ffff80001f24b820) at sys_ioctl+0x4a1 syscall(ffff80001f24b8a0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ee5660ba00, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(bf7fffffffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ba9800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000b45000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000b45000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000b45000) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 ifioctl(fffffd8053849330,80206979,ffff80001f24b6c0,ffff80001f1b4790) at ifioctl+0x3de sys/net/if.c:1821 sys_ioctl(ffff80001f1b4790,ffff80001f24b7d8,ffff80001f24b820) at sys_ioctl+0x4a1 syscall(ffff80001f24b8a0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4ee5660ba00, count: -9