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(ffffffff829394e8,ffff800000b1ba00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af6a00) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af6a00) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b1c800,ffff800000af6a00) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b1c800) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b1c800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000222caed0) 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(ffff8000222cafa0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e856328,7,fffffd807f7b7780,ffff80002123cd20) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806a5cd278,ffff80002123cd20) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a5cd278,ffff80002123cd20) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806a5cd278,ffff80002123cd20) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806a5cd278,ffff80002123cd20) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123cd20) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123cd20,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff80002123cd20,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002123cd20,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002123cd20) at userret+0x189 sys/kern/kern_sig.c:1914 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7fffff06d0, count: -17 ddb{0}> show registers rdi 0xffffffff829394e8 pfi_ifs rsi 0xffff800000b1ba00 rbp 0xffff8000222cad30 rbx 0xdeaf4152deaf4152 rdx 0 rcx 0xffff800000af6600 rax 0xffff800000b1ba10 r8 0xf8 r9 0x8080808080808080 r10 0x3ea434811f058fd8 r11 0x33c9825c4b8f5055 r12 0xdeaf4152deaf4152 r13 0xffff800000afb640 r14 0xffff800000b1ba00 r15 0xffffffff829394e8 pfi_ifs rip 0xffffffff820c5b20 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000222cacd0 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{0}> show proc PROC (syz-executor.1) pid=181310 stat=onproc flags process=a proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002123d500,0xffff80002123c2b0 process=0xffff800021235960 user=0xffff8000222c6000, vmspace=0xfffffd80084968a0 estcpu=36, cpticks=3, pctcpu=0.23 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8100 468912 0 0 3 0x14200 bored sosplice 37363 61925 64165 0 3 0x82 piperd syz-executor.0 64165 131255 49361 0 3 0x82 kqread syz-fuzzer 64165 468163 49361 0 3 0x4000082 thrsleep syz-fuzzer 64165 480757 49361 0 3 0x4000082 thrsleep syz-fuzzer 64165 522487 49361 0 3 0x4000082 thrsleep syz-fuzzer 64165 338563 49361 0 3 0x4000082 thrsleep syz-fuzzer 64165 134119 49361 0 3 0x4000082 thrsleep syz-fuzzer 64165 91618 49361 0 3 0x4000082 thrsleep syz-fuzzer 64165 138070 49361 0 3 0x4000082 thrsleep syz-fuzzer 49361 318339 51809 0 3 0x10008a sigsusp ksh 51809 236366 18369 0 3 0x92 select sshd 9324 66059 1 0 3 0x100083 ttyin getty 18369 380097 1 0 3 0x80 select sshd 98400 430758 34880 74 3 0x100092 bpf pflogd 34880 96642 1 0 3 0x80 netio pflogd 71024 256971 64191 73 3 0x100090 kqread syslogd 64191 178255 1 0 3 0x100082 netio syslogd 18574 515896 1 77 7 0x100090 dhclient 17928 199627 1 0 3 0x80 poll dhclient 21037 407291 0 0 3 0x14200 bored smr 78051 350548 0 0 3 0x14200 pgzero zerothread 73555 124495 0 0 3 0x14200 aiodoned aiodoned 73500 498231 0 0 3 0x14200 syncer update 74039 306078 0 0 3 0x14200 cleaner cleaner 37260 438025 0 0 3 0x14200 reaper reaper 47957 253308 0 0 3 0x14200 pgdaemon pagedaemon 3657 112863 0 0 3 0x14200 bored crynlk 11062 438363 0 0 3 0x14200 bored crypto 78148 9206 0 0 3 0x14200 bored viomb 57025 16793 0 0 3 0x40014200 acpi0 acpi0 72477 522997 0 0 3 0x40014200 idle1 47531 511695 0 0 3 0x14200 bored softnet 4521 90250 0 0 2 0x14200 systqmp 58863 351690 0 0 3 0x14200 bored systq 42822 377439 0 0 3 0x40014200 bored softclock 70402 117114 0 0 3 0x40014200 idle0 1 46223 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 9500 6423K 7263K 78643K 13755 0 pcb 13 8K 8K 78643K 145 0 rtable 67 2K 3K 78643K 407 0 ifaddr 50 11K 12K 78643K 106 0 counters 44 34K 34K 78643K 62 0 ioctlops 0 0K 4K 78643K 1504 0 iov 0 0K 12K 78643K 148 0 mount 1 1K 1K 78643K 1 0 vnodes 1232 77K 78K 78643K 2097 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 166 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 2627 0 proc 63 63K 95K 78643K 745 0 subproc 23 1K 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 278 0 in_multi 22 1K 2K 78643K 250 0 ether_multi 1 0K 0K 78643K 38 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 43 201K 201K 78643K 43 0 exec 0 0K 2K 78643K 498 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 129 26K 29K 78643K 6782 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 155 0 NDP 8 0K 0K 78643K 31 0 temp 92 3975K 4050K 78643K 19074 0 kqueue 3 4K 22K 78643K 163 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 8 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 133 0 131 1 0 1 1 0 8 0 rtentry 112 74 0 49 2 0 2 2 0 8 0 unpcb 120 466 0 456 1 0 1 1 0 8 0 syncache 296 12 0 12 2 2 0 1 0 8 0 tcpcb 736 307 0 303 9 7 2 4 0 8 1 inpcb 304 1170 0 1163 6 4 2 2 0 8 1 nd6 48 18 0 15 1 0 1 1 0 8 0 kcovpl 48 3 0 2 1 0 1 1 0 8 0 ppxss 1128 4 0 4 1 1 0 1 0 8 0 pffrag 232 8 0 8 1 1 0 1 0 482 0 pffrnode 88 8 0 8 1 1 0 1 0 8 0 pffrent 40 360 0 360 1 1 0 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 pfstitem 24 73 0 34 1 0 1 1 0 8 0 pfstkey 112 73 0 34 2 0 2 2 0 8 0 pfstate 328 73 0 34 5 1 4 4 0 8 0 pfrule 1360 26 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 274 0 97 14 2 12 13 0 8 0 art_table 32 275 0 97 2 0 2 2 0 8 0 art_node 16 70 0 43 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 2 1 1 1 0 8 0 semupl 112 9 0 9 1 1 0 1 0 8 0 semapl 112 154 0 144 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4523 0 3109 90 1 89 89 0 8 0 ffsino 272 4523 0 3109 96 1 95 95 0 8 0 nchpl 144 7708 0 6118 60 0 60 60 0 8 0 uvmvnodes 72 5305 0 0 97 0 97 97 0 8 0 vnodes 224 5305 0 0 313 0 313 313 0 8 0 namei 1024 19484 0 19484 2 1 1 1 0 8 1 percpumem 16 42 0 9 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 0 1 0 1 1 0 8 0 scxspl 216 24493 0 24493 11 10 1 8 0 8 1 plimitpl 152 168 0 160 1 0 1 1 0 8 0 sigapl 424 2841 0 2809 4 0 4 4 0 8 0 futexpl 56 17054 0 17054 2 1 1 1 0 8 1 knotepl 112 506 0 488 2 1 1 2 0 8 0 kqueuepl 168 1012 0 1010 1 0 1 1 0 8 0 pipepl 336 170 0 160 7 5 2 2 0 8 1 fdescpl 496 2824 0 2809 3 0 3 3 0 8 0 filepl 152 9232 0 9141 5 0 5 5 0 8 1 lockfpl 104 257 0 256 1 0 1 1 0 8 0 lockfspl 48 115 0 114 1 0 1 1 0 8 0 sessionpl 144 19 0 8 1 0 1 1 0 8 0 pgrppl 48 19 0 8 1 0 1 1 0 8 0 ucredpl 96 1336 0 1327 1 0 1 1 0 8 0 zombiepl 144 2810 0 2809 1 0 1 1 0 8 0 processpl 1080 2841 0 2809 3 0 3 3 0 8 0 procpl 672 6058 0 6019 5 1 4 5 0 8 0 sosppl 168 28 0 28 2 2 0 1 0 8 0 sockpl 432 1770 0 1751 6 3 3 4 0 8 0 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 248 0 0 19 0 19 19 0 8 0 mtagpl 96 244 0 0 6 0 6 6 0 8 0 mbufpl 256 866 0 0 48 0 48 48 0 8 0 bufpl 280 8381 0 2132 447 0 447 447 0 8 0 anonpl 24 202897 0 196634 47 8 39 39 0 186 0 amapchunkpl 152 10925 0 10728 12 3 9 10 0 158 0 amappl16 200 8487 0 8282 14 2 12 12 0 8 0 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl14 184 24 0 20 1 0 1 1 0 8 0 amappl13 176 163 0 160 1 0 1 1 0 8 0 amappl12 168 1309 0 1307 2 1 1 1 0 8 0 amappl11 160 63 0 44 2 1 1 2 0 8 0 amappl10 152 24 0 18 1 0 1 1 0 8 0 amappl9 144 1448 0 1447 2 1 1 1 0 8 0 amappl8 136 214 0 153 3 0 3 3 0 8 0 amappl7 128 1424 0 1416 1 0 1 1 0 8 0 amappl6 120 66 0 57 1 0 1 1 0 8 0 amappl5 112 2855 0 2838 1 0 1 1 0 8 0 amappl4 104 1593 0 1568 1 0 1 1 0 8 0 amappl3 96 398 0 389 1 0 1 1 0 8 0 amappl2 88 21695 0 21629 3 1 2 3 0 8 0 amappl1 80 85358 0 84909 26 14 12 21 0 8 0 amappl 88 6366 0 6309 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2829 0 2809 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2829 0 2809 1 0 1 1 0 8 0 vmmpekpl 168 17427 0 17400 2 0 2 2 0 8 0 vmmpepl 168 354897 0 353566 89 19 70 76 0 357 1 vmsppl 368 2828 0 2809 2 0 2 2 0 8 0 rwobjpl 56 74434 0 73531 26 12 14 19 0 8 0 pdppl 4096 5665 0 5623 64 18 46 47 0 8 4 pvpl 32 1047312 0 1038042 149 66 83 117 0 265 4 pmappl 232 2828 0 2809 3 1 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 365 0 38 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pfi_ifhead_RB_REMOVE(ffffffff829394e8,ffff800000b1ba00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af6a00) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af6a00) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b1c800,ffff800000af6a00) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b1c800) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b1c800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000222caed0) 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(ffff8000222cafa0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e856328,7,fffffd807f7b7780,ffff80002123cd20) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806a5cd278,ffff80002123cd20) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a5cd278,ffff80002123cd20) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806a5cd278,ffff80002123cd20) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806a5cd278,ffff80002123cd20) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123cd20) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123cd20,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff80002123cd20,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002123cd20,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002123cd20) at userret+0x189 sys/kern/kern_sig.c:1914 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7fffff06d0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828cc890) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828cc890) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828cc890,2) at __mp_acquire_count+0x4c sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x390 sys/kern/sched_bsd.c:433 sleep_finish(ffff800021200468,1) at sleep_finish+0x111 sys/kern/kern_synch.c:427 sleep_finish_all(ffff800021200468,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:457 [inline] sleep_finish_all(ffff800021200468,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:402 tsleep(ffffffff828e5254,118,ffffffff8242346c,ccccc78) at tsleep+0x1f2 sys/kern/kern_synch.c:163 doppoll(ffff8000211c3ce8,7f7ffffbcd10,3,ffff8000212005f8,0,ffff8000212006b0) at doppoll+0x577 sys_poll(ffff8000211c3ce8,ffff800021200660,ffff8000212006b0) at sys_poll+0xa7 syscall(ffff800021200730) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021200730) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbccf0, count: -13