kernel: protection fault trap, code=0 Stopped at pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace pfi_ifhead_RB_REMOVE(ffffffff828c37b0,ffff800000bba600) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b73880) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b73880) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b30000,ffff800000b73880) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b30000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b30000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff800021eb4f30) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d01,7) at tun_dev_close+0x140 sys/net/if_tun.c:479 spec_close(ffff800021eb5000) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed295c8,7,fffffd807f7b7a20,ffff80002127ad20) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806cb89990,ffff80002127ad20) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cb89990,ffff80002127ad20) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cb89990,ffff80002127ad20) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cb89990,ffff80002127ad20) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002127ad20) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002127ad20,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff80002127ad20,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002127ad20,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002127ad20) at userret+0x189 sys/kern/kern_sig.c:1914 syscall(ffff800021eb5480) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800021eb5480) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdf8e0, count: -18 ddb{0}> show registers rdi 0xffffffff828c37b0 pfi_ifs rsi 0xffff800000bba600 rbp 0xffff800021eb4d90 rbx 0xdead4110dead4110 rdx 0 rcx 0xffff800000af6a80 rax 0xffff800000bba610 r8 0xf8 r9 0x8080808080808080 r10 0xad91b43f7ef805a6 r11 0x323424075c0ec192 r12 0xdead4110dead4110 r13 0xffff800000afbbc0 r14 0xffff800000bba600 r15 0xffffffff828c37b0 pfi_ifs rip 0xffffffff812bbcf0 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff800021eb4d30 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{0}> show proc PROC (syz-executor.1) pid=409817 stat=onproc flags process=a proc=2000 pri=32, usrpri=74, nice=20 forw=0xffffffffffffffff, list=0xffff80002127a7e0,0xffff80002127afd0 process=0xffff800021236a40 user=0xffff800021eb0000, vmspace=0xfffffd80084922e0 estcpu=24, cpticks=0, pctcpu=0.27 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13622 32695 16471 0 3 0x82 nanoslp syz-executor.0 22864 361893 0 0 3 0x14200 bored sosplice 16471 127487 17903 0 3 0x82 thrsleep syz-fuzzer 16471 510801 17903 0 3 0x4000082 thrsleep syz-fuzzer 16471 64828 17903 0 3 0x4000082 thrsleep syz-fuzzer 16471 180159 17903 0 3 0x4000082 thrsleep syz-fuzzer 16471 78725 17903 0 3 0x4000082 thrsleep syz-fuzzer 16471 241003 17903 0 3 0x4000082 thrsleep syz-fuzzer 16471 494537 17903 0 3 0x4000082 thrsleep syz-fuzzer 16471 156859 17903 0 3 0x4000082 kqread syz-fuzzer 17903 422602 68531 0 3 0x10008a sigsusp ksh 68531 445221 1819 0 3 0x92 select sshd 97007 446930 1 0 3 0x100083 ttyin getty 1819 343997 1 0 3 0x80 select sshd 9030 471206 22363 74 3 0x100092 bpf pflogd 22363 189977 1 0 3 0x80 netio pflogd 18412 100297 54918 73 3 0x100090 kqread syslogd 54918 162997 1 0 3 0x100082 netio syslogd 84799 44928 1 77 7 0x100090 dhclient 94708 325364 1 0 3 0x80 poll dhclient 77967 378574 0 0 3 0x14200 bored smr 42638 404832 0 0 3 0x14200 pgzero zerothread 47747 74554 0 0 3 0x14200 aiodoned aiodoned 3159 257656 0 0 3 0x14200 syncer update 3414 511775 0 0 3 0x14200 cleaner cleaner 23406 385907 0 0 3 0x14200 reaper reaper 30283 223980 0 0 3 0x14200 pgdaemon pagedaemon 16596 512339 0 0 3 0x14200 bored crynlk 71334 61646 0 0 3 0x14200 bored crypto 3635 412705 0 0 3 0x14200 bored viomb 96813 291319 0 0 3 0x40014200 acpi0 acpi0 90241 183142 0 0 3 0x40014200 idle1 98363 486211 0 0 3 0x14200 bored softnet 17239 223154 0 0 2 0x14200 systqmp 44979 171508 0 0 3 0x14200 bored systq 31685 185497 0 0 3 0x40014200 bored softclock 88946 420370 0 0 3 0x40014200 idle0 1 238551 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9557 6444K 7450K 78643K 15510 0 pcb 13 8K 8K 78643K 373 0 rtable 93 5K 6K 78643K 862 0 ifaddr 92 17K 18K 78643K 243 0 sysctl 2 0K 0K 78643K 2 0 counters 44 34K 34K 78643K 92 0 ioctlops 0 0K 4K 78643K 1740 0 iov 0 0K 24K 78643K 121 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 3124 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 41 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 248 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 5377 0 sigio 0 0K 0K 78643K 5 0 proc 64 63K 95K 78643K 867 0 subproc 23 1K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 422 0 in_multi 18 1K 2K 78643K 388 0 ether_multi 1 0K 0K 78643K 106 0 mrt 0 0K 0K 78643K 75 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 593 0 pfkey data 0 0K 1K 78643K 15 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 212 369K 373K 78643K 13125 0 UVM aobj 31 7K 7K 78643K 36 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 257 0 NDP 16 0K 0K 78643K 67 0 temp 155 3985K 4051K 78643K 48229 0 kqueue 3 4K 12K 78643K 207 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 15 0 11 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 81 0 79 1 0 1 1 0 8 0 rtentry 112 176 0 145 3 1 2 2 0 8 0 unpcb 120 1062 0 1040 1 0 1 1 0 8 0 syncache 296 54 0 54 5 5 0 1 0 8 0 tcpqe 32 102 0 102 2 2 0 1 0 8 0 tcpcb 736 812 0 805 14 12 2 4 0 8 0 inpcb 296 2061 0 2051 9 7 2 2 0 8 1 rttmr 72 28 0 28 2 1 1 1 0 8 1 nd6 48 36 0 34 1 0 1 1 0 8 0 pkpcb 40 47 0 47 7 7 0 1 0 8 0 kcovpl 48 6 0 5 1 0 1 1 0 8 0 swfcl 56 8 0 0 1 0 1 1 0 8 0 ppxss 1128 12 0 12 2 2 0 1 0 8 0 pffrag 232 5 0 4 2 1 1 1 0 482 0 pffrnode 88 5 0 4 2 1 1 1 0 8 0 pffrent 40 20 0 19 2 1 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 42 0 39 1 0 1 1 0 8 0 pfstitem 24 87 0 65 1 0 1 1 0 8 0 pfstkey 112 87 0 65 2 0 2 2 0 8 0 pfstate 328 87 0 65 4 0 4 4 0 8 1 pfrule 1360 154 0 120 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 768 0 581 17 5 12 13 0 8 0 art_table 32 769 0 581 2 0 2 2 0 8 0 art_node 16 175 0 139 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 1 0 1 0 8 0 semapl 112 246 0 236 1 0 1 1 0 8 0 shmpl 112 33 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8302 0 6884 89 0 89 89 0 8 0 ffsino 272 8302 0 6884 95 0 95 95 0 8 0 nchpl 144 14570 0 12991 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 36202 0 36202 1 0 1 1 0 8 1 percpumem 16 57 0 24 1 0 1 1 0 8 0 vcpupl 1984 22 0 0 3 0 3 3 0 8 0 vmpool 560 22 0 0 2 0 2 2 0 8 0 pfiaddrpl 120 13 0 13 2 2 0 1 0 8 0 scxspl 216 44103 0 44103 13 12 1 8 0 8 1 plimitpl 152 230 0 222 1 0 1 1 0 8 0 sigapl 424 5602 0 5570 7 3 4 7 0 8 0 futexpl 56 32713 0 32713 1 0 1 1 0 8 1 knotepl 112 369 0 351 1 0 1 1 0 8 0 kqueuepl 168 1977 0 1970 1 0 1 1 0 8 0 pipepl 336 191 0 181 2 0 2 2 0 8 0 fdescpl 496 5565 0 5550 3 0 3 3 0 8 0 filepl 152 17413 0 17322 5 0 5 5 0 8 1 lockfpl 104 546 0 545 1 0 1 1 0 8 0 lockfspl 48 210 0 209 1 0 1 1 0 8 0 sessionpl 144 22 0 11 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 2587 0 2577 1 0 1 1 0 8 0 zombiepl 144 5571 0 5569 1 0 1 1 0 8 0 processpl 1080 5602 0 5569 4 1 3 4 0 8 0 procpl 672 12166 0 12126 7 3 4 6 0 8 0 sosppl 168 82 0 79 6 5 1 1 0 8 0 sockpl 432 3257 0 3223 8 3 5 5 0 8 0 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 15 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 242 0 0 18 1 17 17 0 8 0 mtagpl 96 322 0 0 7 0 7 7 0 8 0 mbufpl 256 888 0 0 49 0 49 49 0 8 0 bufpl 280 11350 0 5103 447 0 447 447 0 8 0 anonpl 24 377652 0 369266 67 9 58 58 0 186 6 amapchunkpl 152 20539 0 20317 15 3 12 12 0 158 2 amappl16 200 16809 0 16482 23 5 18 19 0 8 0 amappl15 192 3 0 1 1 0 1 1 0 8 0 amappl14 184 25 0 21 1 0 1 1 0 8 0 amappl13 176 51 0 49 1 0 1 1 0 8 0 amappl12 168 2095 0 2092 1 0 1 1 0 8 0 amappl11 160 74 0 57 1 0 1 1 0 8 0 amappl10 152 443 0 436 1 0 1 1 0 8 0 amappl9 144 3088 0 3087 2 1 1 1 0 8 0 amappl8 136 260 0 184 3 0 3 3 0 8 0 amappl7 128 3086 0 3078 1 0 1 1 0 8 0 amappl6 120 502 0 490 1 0 1 1 0 8 0 amappl5 112 5105 0 5088 1 0 1 1 0 8 0 amappl4 104 2397 0 2368 1 0 1 1 0 8 0 amappl3 96 227 0 219 1 0 1 1 0 8 0 amappl2 88 44040 0 43971 3 1 2 3 0 8 0 amappl1 80 162794 0 162340 25 13 12 21 0 8 0 amappl 88 12502 0 12427 2 0 2 2 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 35 0 5 1 0 1 1 0 8 0 uaddrrnd 24 5587 0 5550 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5587 0 5550 1 0 1 1 0 8 0 vmmpekpl 168 22928 0 22895 2 0 2 2 0 8 0 vmmpepl 168 693856 0 692359 95 18 77 78 0 357 2 vmsppl 368 5586 0 5550 4 0 4 4 0 8 0 rwobjpl 56 143127 0 142060 28 11 17 19 0 8 1 pdppl 4096 11181 0 11122 79 16 63 63 0 8 4 pvpl 32 1859688 0 1850095 162 66 96 117 0 265 15 pmappl 232 5586 0 5550 4 1 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 386 0 37 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pfi_ifhead_RB_REMOVE(ffffffff828c37b0,ffff800000bba600) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b73880) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b73880) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b30000,ffff800000b73880) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b30000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b30000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff800021eb4f30) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d01,7) at tun_dev_close+0x140 sys/net/if_tun.c:479 spec_close(ffff800021eb5000) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed295c8,7,fffffd807f7b7a20,ffff80002127ad20) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806cb89990,ffff80002127ad20) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cb89990,ffff80002127ad20) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cb89990,ffff80002127ad20) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cb89990,ffff80002127ad20) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002127ad20) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002127ad20,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff80002127ad20,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002127ad20,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002127ad20) at userret+0x189 sys/kern/kern_sig.c:1914 syscall(ffff800021eb5480) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800021eb5480) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdf8e0, count: -18 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp