login: 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(fff9fffffff7fefd) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad9700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d765670) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805dc6a340,7,fffffd806c3bfae0,ffff80001d6bf650) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805b900d38,ffff80001d6bf650) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805b900d38,ffff80001d6bf650) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805b900d38,ffff80001d6bf650) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805b900d38,ffff80001d6bf650) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6bf650) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6bf650,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6bf650,ffff80001d765900,ffff80001d765950) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001d7659d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe28a0, count: -16 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d765440 rbx 0 rdx 0 rcx 0x1 rax 0xffff80001d6bf650 r8 0xffff800000ad9700 r9 0xffffffff81256843 rt_ifa_purge+0x153 r10 0x5 r11 0x816d34051d2fa7c7 r12 0 r13 0x3 r14 0xfff9fffffff7fefd r15 0x1 rip 0xffffffff817ba21d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d7653e0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=379891 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6ea020,0xffff80001d6eb3f0 process=0xffff80001e842030 user=0xffff80001d760000, vmspace=0xfffffd806bc0a550 estcpu=0, cpticks=0, pctcpu=0.8 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 95158 442144 1 0 3 0x100083 ttyin getty 73167 208633 44360 0 3 0x82 nanosleep syz-executor.1 87921 475470 0 0 3 0x14280 nfsidl nfsio 75454 481990 0 0 3 0x14280 nfsidl nfsio 42931 20011 0 0 3 0x14280 nfsidl nfsio 58589 346287 0 0 3 0x14280 nfsidl nfsio 69453 341777 0 0 3 0x14280 nfsidl nfsio 56144 296087 0 0 3 0x14280 nfsidl nfsio 17270 409293 0 0 3 0x14280 nfsidl nfsio 25945 107317 0 0 3 0x14280 nfsidl nfsio 4935 136181 0 0 3 0x14280 nfsidl nfsio 36185 312290 0 0 3 0x14280 nfsidl nfsio 28403 318198 0 0 3 0x14280 nfsidl nfsio 42537 505159 0 0 3 0x14280 nfsidl nfsio 57713 139638 0 0 3 0x14280 nfsidl nfsio 84919 24527 0 0 3 0x14280 nfsidl nfsio 54476 445326 0 0 3 0x14280 nfsidl nfsio 75493 114137 0 0 3 0x14280 nfsidl nfsio 71799 316778 0 0 3 0x14280 nfsidl nfsio 57955 164493 0 0 3 0x14280 nfsidl nfsio 13686 465098 0 0 3 0x14280 nfsidl nfsio 42448 285974 0 0 3 0x14280 nfsidl nfsio 44360 488764 61832 0 3 0x82 thrsleep syz-fuzzer 44360 166304 61832 0 3 0x4000082 thrsleep syz-fuzzer 44360 135166 61832 0 3 0x4000082 kqread syz-fuzzer 44360 15822 61832 0 3 0x4000082 thrsleep syz-fuzzer 44360 36096 61832 0 3 0x4000082 thrsleep syz-fuzzer 44360 43722 61832 0 3 0x4000082 thrsleep syz-fuzzer 44360 147582 61832 0 3 0x4000082 thrsleep syz-fuzzer 61832 53402 56753 0 3 0x10008a pause ksh 56753 400423 97982 0 3 0x92 select sshd 97982 86966 1 0 3 0x80 select sshd 52150 97483 72780 73 3 0x100090 kqread syslogd 72780 96628 1 0 3 0x100082 netio syslogd 80355 103188 1 77 2 0x100090 dhclient 69100 466660 1 0 3 0x80 poll dhclient 98983 506237 0 0 3 0x14200 bored smr 60752 520078 0 0 3 0x14200 pgzero zerothread 16849 201142 0 0 3 0x14200 aiodoned aiodoned 58184 291396 0 0 3 0x14200 syncer update 52011 36931 0 0 3 0x14200 cleaner cleaner 69846 160854 0 0 3 0x14200 reaper reaper 72074 353932 0 0 3 0x14200 pgdaemon pagedaemon 52528 319554 0 0 3 0x14200 bored crynlk 28450 53028 0 0 3 0x14200 bored crypto 88087 393234 0 0 3 0x40014200 acpi0 acpi0 24902 100005 0 0 3 0x14200 bored softnet 32477 320180 0 0 2 0x14200 systqmp 94965 343675 0 0 3 0x14200 bored systq 4644 36151 0 0 3 0x40014200 bored softclock 68462 95567 0 0 3 0x40014200 idle0 1 158587 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 9510 6346K 6591K 78643K 10867 0 pcb 13 8K 8K 78643K 55 0 rtable 117 8K 9K 78643K 447 0 ifaddr 82 15K 16K 78643K 138 0 counters 21 16K 16K 78643K 23 0 ioctlops 0 0K 4K 78643K 54 0 iov 0 0K 12K 78643K 30 0 mount 1 1K 1K 78643K 1 0 vnodes 1234 78K 78K 78643K 1373 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 58 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 303 0 sigio 0 0K 0K 78643K 4 0 proc 52 38K 63K 78643K 446 0 subproc 23 1K 3K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 9 0 in_multi 45 2K 2K 78643K 107 0 ether_multi 1 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 217 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 158 24K 32K 78643K 1607 0 UVM aobj 10 2K 2K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 22 0 NDP 13 0K 0K 78643K 25 0 temp 101 3857K 3921K 78643K 3079 0 kqueue 3 4K 9K 78643K 11 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 8 0 4 1 0 1 1 0 8 0 rtpcb 88 31 0 29 1 0 1 1 0 8 0 rtentry 112 75 0 36 2 0 2 2 0 8 0 unpcb 120 303 0 294 1 0 1 1 0 8 0 syncache 272 6 0 6 2 2 0 1 0 8 0 tcpqe 32 35 0 35 2 2 0 1 0 8 0 tcpcb 592 78 0 74 3 2 1 2 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 296 644 0 637 2 1 1 2 0 8 0 nd6 48 19 0 14 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 1 0 1 0 8 0 pfrktable 1344 71 0 61 2 1 1 2 0 8 0 pftag 88 8 0 6 1 0 1 1 0 8 0 pfrule 1360 12 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 253 0 81 13 1 12 13 0 8 0 art_table 32 254 0 81 2 0 2 2 0 8 0 art_node 16 74 0 35 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 54 0 44 1 0 1 1 0 8 0 shmpl 112 10 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1748 0 354 88 0 88 88 0 8 0 ffsino 240 1748 0 354 83 0 83 83 0 8 0 nchpl 144 2320 0 739 60 0 60 60 0 8 0 uvmvnodes 72 1906 0 0 35 0 35 35 0 8 0 vnodes 208 1906 0 0 101 0 101 101 0 8 0 namei 1024 7603 0 7603 2 1 1 1 0 8 1 vmpool 528 2 0 2 1 1 0 1 0 8 0 pfiaddrpl 120 26 0 18 1 0 1 1 0 8 0 scxspl 200 6610 0 6610 1 0 1 1 0 8 1 plimitpl 152 32 0 24 1 0 1 1 0 8 0 sigapl 424 501 0 453 6 0 6 6 0 8 0 futexpl 56 6219 0 6219 2 1 1 1 0 8 1 knotepl 112 112 0 98 1 0 1 1 0 8 0 kqueuepl 152 30 0 28 1 0 1 1 0 8 0 pipepl 272 103 0 95 2 0 2 2 0 8 1 fdescpl 432 467 0 453 2 0 2 2 0 8 0 filepl 120 3979 0 3887 5 0 5 5 0 8 1 lockfpl 104 37 0 36 1 0 1 1 0 8 0 lockfspl 48 15 0 14 1 0 1 1 0 8 0 sessionpl 120 21 0 11 1 0 1 1 0 8 0 pgrppl 48 21 0 11 1 0 1 1 0 8 0 ucredpl 96 1328 0 1321 1 0 1 1 0 8 0 zombiepl 144 455 0 453 1 0 1 1 0 8 0 processpl 944 501 0 453 7 0 7 7 0 8 0 procpl 632 805 0 751 6 1 5 6 0 8 0 sockpl 400 994 0 976 5 2 3 4 0 8 0 mcl64k 65536 126 0 126 1 0 1 1 0 8 1 mcl16k 16384 5 0 5 1 1 0 1 0 8 0 mcl12k 12288 11 0 11 3 2 1 1 0 8 1 mcl9k 9216 5 0 5 3 2 1 1 0 8 1 mcl8k 8192 20 0 20 2 1 1 1 0 8 1 mcl4k 4096 27 0 27 3 2 1 1 0 8 1 mcl2k2 2112 4 0 4 3 2 1 1 0 8 1 mcl2k 2048 96262 0 96218 19 12 7 14 0 8 0 mtagpl 96 24 0 14 2 1 1 1 0 8 0 mbufpl 256 156323 0 156205 44 1 43 43 0 8 24 bufpl 280 3668 0 116 254 0 254 254 0 8 0 anonpl 16 65332 0 52136 80 7 73 76 0 107 0 amapchunkpl 152 2374 0 2184 18 3 15 15 0 158 6 amappl16 192 2109 0 1124 51 1 50 50 0 8 0 amappl15 184 134 0 129 1 0 1 1 0 8 0 amappl14 176 1 0 0 1 0 1 1 0 8 0 amappl13 168 37 0 34 1 0 1 1 0 8 0 amappl12 160 24 0 20 1 0 1 1 0 8 0 amappl11 152 48 0 39 1 0 1 1 0 8 0 amappl10 144 133 0 128 1 0 1 1 0 8 0 amappl9 136 453 0 449 1 0 1 1 0 8 0 amappl8 128 460 0 403 2 0 2 2 0 8 0 amappl7 120 240 0 228 1 0 1 1 0 8 0 amappl6 112 37 0 30 1 0 1 1 0 8 0 amappl5 104 491 0 478 1 0 1 1 0 8 0 amappl4 96 446 0 415 1 0 1 1 0 8 0 amappl3 88 140 0 131 1 0 1 1 0 8 0 amappl2 80 2811 0 2739 2 0 2 2 0 8 0 amappl1 72 19870 0 19422 24 14 10 17 0 8 1 amappl 80 1069 0 1012 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 12 0 3 1 0 1 1 0 8 0 uaddrrnd 24 469 0 455 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 469 0 455 1 0 1 1 0 8 0 vmmpekpl 168 7092 0 7066 2 0 2 2 0 8 0 vmmpepl 168 66806 0 64630 177 33 144 161 0 357 48 vmsppl 272 468 0 455 3 1 2 2 0 8 1 pdppl 4096 944 0 910 7 1 6 6 0 8 1 pvpl 32 203662 0 187274 182 11 171 180 0 265 2 pmappl 200 468 0 455 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 282 0 27 9 1 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace in_delmulti(fff9fffffff7fefd) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad9700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d765670) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805dc6a340,7,fffffd806c3bfae0,ffff80001d6bf650) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805b900d38,ffff80001d6bf650) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805b900d38,ffff80001d6bf650) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805b900d38,ffff80001d6bf650) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805b900d38,ffff80001d6bf650) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6bf650) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6bf650,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6bf650,ffff80001d765900,ffff80001d765950) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001d7659d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe28a0, count: -16 ddb> machine ddbcpu 1 No such command ddb> trace in_delmulti(fff9fffffff7fefd) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000ad9700) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac7800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac7800) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac7800) at tun_clone_destroy+0x1c7 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff80001d765670) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd805dc6a340,7,fffffd806c3bfae0,ffff80001d6bf650) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd805b900d38,ffff80001d6bf650) at vn_closefile+0xd2 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd805b900d38,ffff80001d6bf650) at vn_closefile+0xd2 sys/kern/vfs_vnops.c:614 fdrop(fffffd805b900d38,ffff80001d6bf650) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd805b900d38,ffff80001d6bf650) at closef+0x117 sys/kern/kern_descrip.c:1263 fdfree(ffff80001d6bf650) at fdfree+0x100 sys/kern/kern_descrip.c:1195 exit1(ffff80001d6bf650,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff80001d6bf650,ffff80001d765900,ffff80001d765950) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80001d7659d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe28a0, count: -16