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(fffdfefffdffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2f600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800023f1fc70) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e30b008,7,fffffd807f7bfae0,ffff800023fa22a8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067ffb148,ffff800023fa22a8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067ffb148,ffff800023fa22a8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067ffb148,ffff800023fa22a8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067ffb148,ffff800023fa22a8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800023fa22a8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800023fa22a8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800023fa22a8,ffff800023f1ff00,ffff800023f1ff50) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f1ffd0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f1ffd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9720, count: -16 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800023f1fa40 rbx 0 rdx 0 rcx 0 rax 0xffff800023fa22a8 r8 0xffff800000b2f600 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0x2151a0e316d3ce72 r12 0 r13 0x3 r14 0xfffdfefffdffffff r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f1f9e0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=288794 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800023fa2798,0xffff800023fa2040 process=0xffff800020e34bd0 user=0xffff800023f1b000, vmspace=0xfffffd806e909e68 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13617 490156 18188 0 3 0x80 nanosleep syz-executor.1 13617 97695 18188 0 3 0x4000080 poll syz-executor.1 13617 231113 18188 0 3 0x4000080 fsleep syz-executor.1 30895 499940 0 0 3 0x14280 nfsidl nfsio 39959 428235 0 0 3 0x14280 nfsidl nfsio 65345 308724 0 0 3 0x14280 nfsidl nfsio 80239 523722 0 0 3 0x14280 nfsidl nfsio 90996 91322 0 0 3 0x14280 nfsidl nfsio 11757 105516 0 0 3 0x14280 nfsidl nfsio 49521 211340 0 0 3 0x14280 nfsidl nfsio 67953 300370 0 0 3 0x14280 nfsidl nfsio 44595 80269 0 0 3 0x14280 nfsidl nfsio 17070 256861 0 0 3 0x14280 nfsidl nfsio 92751 143804 0 0 3 0x14280 nfsidl nfsio 48829 195810 0 0 3 0x14280 nfsidl nfsio 22661 179384 0 0 3 0x14280 nfsidl nfsio 33709 317868 0 0 3 0x14280 nfsidl nfsio 82080 481585 0 0 3 0x14280 nfsidl nfsio 9162 456881 0 0 3 0x14280 nfsidl nfsio 75367 10403 0 0 3 0x14280 nfsidl nfsio 52650 358808 0 0 3 0x14280 nfsidl nfsio 69755 206554 0 0 3 0x14280 nfsidl nfsio 16265 468967 0 0 3 0x14280 nfsidl nfsio 34049 320490 0 0 3 0x14200 bored sosplice 18188 166413 58142 0 3 0x82 nanosleep syz-executor.1 58142 438336 16496 0 3 0x82 thrsleep syz-fuzzer 58142 166828 16496 0 3 0x4000082 nanosleep syz-fuzzer 58142 53273 16496 0 3 0x4000082 kqread syz-fuzzer 58142 60495 16496 0 3 0x4000082 thrsleep syz-fuzzer 58142 474997 16496 0 2 0x4000002 syz-fuzzer 58142 469371 16496 0 7 0x4000002 syz-fuzzer 58142 514992 16496 0 3 0x4000082 thrsleep syz-fuzzer 58142 284571 16496 0 3 0x4000082 thrsleep syz-fuzzer 16496 461845 13521 0 3 0x10008a pause ksh 13521 156652 98742 0 3 0x92 select sshd 50240 62742 1 0 3 0x100083 ttyin getty 98742 68827 1 0 3 0x80 select sshd 66181 426075 97695 74 3 0x100092 bpf pflogd 97695 266883 1 0 3 0x80 netio pflogd 60914 74568 58397 73 3 0x100090 kqread syslogd 58397 11817 1 0 3 0x100082 netio syslogd 36828 307995 1 77 3 0x100090 poll dhclient 44404 437624 1 0 3 0x80 poll dhclient 760 36231 0 0 3 0x14200 bored smr 80300 98536 0 0 2 0x14200 zerothread 87109 256526 0 0 3 0x14200 aiodoned aiodoned 73838 151105 0 0 3 0x14200 syncer update 44357 101393 0 0 3 0x14200 cleaner cleaner 18927 429050 0 0 3 0x14200 reaper reaper 72712 294741 0 0 3 0x14200 pgdaemon pagedaemon 38205 171476 0 0 3 0x14200 bored crynlk 21261 491799 0 0 3 0x14200 bored crypto 49208 154477 0 0 3 0x40014200 acpi0 acpi0 47331 450851 0 0 3 0x40014200 idle1 18994 375317 0 0 3 0x14200 bored softnet 67927 101435 0 0 3 0x14200 bored systqmp 65310 280638 0 0 3 0x14200 bored systq 18338 236381 0 0 3 0x40014200 bored softclock 45097 76993 0 0 3 0x40014200 idle0 1 241042 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9531 6430K 6939K 78643K 11174 0 pcb 14 8K 8K 78643K 179 0 rtable 90 6K 7K 78643K 367 0 ifaddr 91 17K 18K 78643K 154 0 counters 43 33K 34K 78643K 59 0 ioctlops 0 0K 4K 78643K 1515 0 iov 0 0K 16K 78643K 42 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1388 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 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 28 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 449 0 sigio 0 0K 0K 78643K 2 0 proc 61 63K 95K 78643K 447 0 subproc 23 1K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 1 0K 0K 78643K 111 0 in_multi 50 2K 2K 78643K 165 0 ether_multi 1 0K 0K 78643K 5 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 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 226 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 172 42K 57K 78643K 2436 0 UVM aobj 17 2K 2K 78643K 18 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 36 0 NDP 14 0K 0K 78643K 33 0 temp 120 3873K 3940K 78643K 10259 0 kqueue 3 4K 14K 78643K 19 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 9 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 37 0 35 1 0 1 1 0 8 0 rtentry 112 78 0 49 2 0 2 2 0 8 0 unpcb 120 197 0 187 2 1 1 2 0 8 0 syncache 272 5 0 5 2 2 0 1 0 8 0 tcpqe 32 439 0 439 2 2 0 1 0 8 0 tcpcb 592 166 0 160 2 1 1 2 0 8 0 inpcb 296 854 0 843 3 2 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 16 0 13 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1136 2 0 2 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 2 0 2 2 1 1 1 0 482 1 pffrnode 88 2 0 2 2 1 1 1 0 8 1 pffrent 40 47 0 47 2 1 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 pfrktable 1344 9 0 3 1 0 1 1 0 8 0 pftag 88 4 0 4 1 1 0 1 0 8 0 pfstitem 24 52 0 41 1 0 1 1 0 8 0 pfstkey 112 54 0 43 2 1 1 2 0 8 0 pfstate 328 52 0 41 3 0 3 3 0 8 0 pfrule 1360 26 0 19 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 347 0 204 13 3 10 12 0 8 0 art_table 32 348 0 204 2 0 2 2 0 8 0 art_node 16 77 0 54 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 6 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 15 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1951 0 550 91 3 88 89 0 8 0 ffsino 272 1951 0 550 95 1 94 95 0 8 0 nchpl 144 2702 0 1115 60 0 60 60 0 8 0 uvmvnodes 72 2121 0 0 39 0 39 39 0 8 0 vnodes 208 2121 0 0 112 0 112 112 0 8 0 namei 1024 7140 0 7140 3 2 1 1 0 8 1 percpumem 16 40 0 8 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 0 1 0 1 1 0 8 0 scxspl 200 8201 0 8201 11 10 1 7 0 8 1 plimitpl 152 43 0 35 1 0 1 1 0 8 0 sigapl 424 685 0 633 6 0 6 6 0 8 0 futexpl 56 5565 0 5564 3 2 1 1 0 8 0 knotepl 112 88 0 74 1 0 1 1 0 8 0 kqueuepl 152 65 0 62 1 0 1 1 0 8 0 pipepl 304 283 0 275 3 2 1 2 0 8 0 fdescpl 496 649 0 633 3 0 3 3 0 8 0 filepl 152 3717 0 3626 6 1 5 6 0 8 0 lockfpl 104 101 0 100 1 0 1 1 0 8 0 lockfspl 48 27 0 26 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 22 0 11 1 0 1 1 0 8 0 ucredpl 96 253 0 244 1 0 1 1 0 8 0 zombiepl 144 634 0 633 2 1 1 1 0 8 0 processpl 1008 685 0 633 7 0 7 7 0 8 0 procpl 632 1620 0 1559 7 1 6 6 0 8 0 sosppl 144 4 0 4 1 1 0 1 0 8 0 sockpl 400 1094 0 1071 7 4 3 5 0 8 0 mcl64k 65536 5 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 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 212 0 0 26 0 26 26 0 8 0 mtagpl 96 45 0 0 2 0 2 2 0 8 0 mbufpl 256 269 0 0 16 0 16 16 0 8 0 bufpl 280 4148 0 127 288 0 288 288 0 8 0 anonpl 16 78892 0 56118 97 5 92 92 0 124 0 amapchunkpl 152 4090 0 3746 30 14 16 27 0 158 0 amappl16 192 2852 0 1743 57 1 56 56 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 185 0 182 1 0 1 1 0 8 0 amappl13 168 263 0 258 1 0 1 1 0 8 0 amappl12 160 22 0 19 1 0 1 1 0 8 0 amappl11 152 239 0 222 1 0 1 1 0 8 0 amappl10 144 24 0 19 1 0 1 1 0 8 0 amappl9 136 368 0 367 1 0 1 1 0 8 0 amappl8 128 347 0 310 2 0 2 2 0 8 0 amappl7 120 115 0 103 1 0 1 1 0 8 0 amappl6 112 30 0 24 1 0 1 1 0 8 0 amappl5 104 361 0 345 1 0 1 1 0 8 0 amappl4 96 910 0 879 1 0 1 1 0 8 0 amappl3 88 325 0 314 1 0 1 1 0 8 0 amappl2 80 4238 0 4165 2 0 2 2 0 8 0 amappl1 72 28167 0 27695 23 13 10 18 0 8 0 amappl 80 1901 0 1814 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 17 0 1 1 0 1 1 0 8 0 uaddrrnd 24 655 0 633 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 655 0 633 1 0 1 1 0 8 0 vmmpekpl 168 9629 0 9592 2 0 2 2 0 8 0 vmmpepl 168 89614 0 87237 129 25 104 112 0 357 0 vmsppl 368 654 0 633 4 2 2 3 0 8 0 pdppl 4096 1317 0 1272 7 1 6 6 0 8 0 pvpl 32 250648 0 224002 224 9 215 215 0 265 0 pmappl 232 654 0 633 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 276 0 21 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82785ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0xc0001a1f20, count: -3 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(fffdfefffdffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b2f600) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff800000ac6000) at if_detach+0x140 sys/net/if.c:1032 tun_clone_destroy(ffff800000ac6000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:326 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:477 spec_close(ffff800023f1fc70) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e30b008,7,fffffd807f7bfae0,ffff800023fa22a8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8067ffb148,ffff800023fa22a8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8067ffb148,ffff800023fa22a8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8067ffb148,ffff800023fa22a8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8067ffb148,ffff800023fa22a8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800023fa22a8) at fdfree+0x101 sys/kern/kern_descrip.c:1195 exit1(ffff800023fa22a8,0,0,1) at exit1+0x32c sys/kern/kern_exit.c:197 sys_exit(ffff800023fa22a8,ffff800023f1ff00,ffff800023f1ff50) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800023f1ffd0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f1ffd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9720, count: -16