kernel: protection fault trap, code=0 Stopped at pfi_ifhead_RB_REMOVE+0x58: movq 0x10(%r12),%rbx ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace pfi_ifhead_RB_REMOVE(ffffffff8258de90,ffff800000aa1f00) at pfi_ifhead_RB_REMOVE+0x58 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000a9ec80) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000a9ec80) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:298 if_delgroup(ffff800000aab000,ffff800000a9ec80) at if_delgroup+0x1b7 sys/net/if.c:2674 if_detach(ffff800000aab000) at if_detach+0x1c0 sys/net/if.c:1116 tun_clone_destroy(ffff800000aab000) at tun_clone_destroy+0x1c0 sys/net/if_tun.c:278 ifioctl(fffffd803ac8bc50,80206979,ffff800015962500,ffff800014915b40) at ifioctl+0x3d4 sys/net/if.c:1877 sys_ioctl(ffff800014915b40,ffff800015962618,ffff800015962660) at sys_ioctl+0x5b9 syscall(ffff8000159626e0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,af383adc010) at Xsyscall+0x128 end of kernel end trace frame: 0xaf637fd3070, count: -9 ddb> show registers rdi 0xffffffff81e1366b pfi_ifhead_RB_REMOVE+0x2b rsi 0x148c0 acpi_pdirpa+0x728 rbp 0xffff8000159622e0 rbx 0xdeafbeaddeafbead rdx 0x148c1 acpi_pdirpa+0x729 rcx 0xffff800015738000 rax 0xffff800000aa1f10 r8 0x101010101010101 r9 0x8080808080808080 r10 0xef30d7a97d50088c r11 0x47e25df107cdc98 r12 0xdeafbeaddeafbead r13 0xffff800000ac54e0 r14 0xffff800000aa1f00 r15 0xffffffff8258de90 pfi_ifs rip 0xffffffff81e13698 pfi_ifhead_RB_REMOVE+0x58 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff800015962280 ss 0x10 pfi_ifhead_RB_REMOVE+0x58: movq 0x10(%r12),%rbx ddb> show proc PROC (syz-executor.0) pid=217806 stat=onproc flags process=0 proc=4000000 pri=71, usrpri=71, nice=20 forw=0xffffffffffffffff, list=0xffff800014914018,0xffffffff8258e3e0 process=0xffff8000ffff77b0 user=0xffff80001595d000, vmspace=0xfffffd803f013dd0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 26570 177478 76687 0 2 0 syz-executor.0 *26570 217806 76687 0 7 0x4000000 syz-executor.0 95488 212309 30018 0 3 0x82 nanosleep syz-executor.1 18296 489525 0 0 3 0x14200 acct acct 76687 522403 30018 0 3 0x82 nanosleep syz-executor.0 17322 483042 0 0 3 0x14200 bored sosplice 30018 214572 45823 0 3 0x82 thrsleep syz-fuzzer 30018 335222 45823 0 3 0x4000082 thrsleep syz-fuzzer 30018 111983 45823 0 3 0x4000082 thrsleep syz-fuzzer 30018 125250 45823 0 3 0x4000082 thrsleep syz-fuzzer 30018 100955 45823 0 3 0x4000082 thrsleep syz-fuzzer 30018 400746 45823 0 3 0x4000082 thrsleep syz-fuzzer 30018 340079 45823 0 3 0x4000082 thrsleep syz-fuzzer 30018 319129 45823 0 3 0x4000082 kqread syz-fuzzer 45823 497451 14903 0 3 0x10008a pause ksh 14903 287541 29912 0 3 0x92 select sshd 92032 148136 1 0 3 0x100083 ttyin getty 29912 111989 1 0 3 0x80 select sshd 28778 257393 66358 73 3 0x100090 kqread syslogd 66358 128648 1 0 3 0x100082 netio syslogd 9088 298687 1 77 2 0x100090 dhclient 39602 23853 1 0 3 0x80 poll dhclient 16928 81771 0 0 2 0x14200 zerothread 75325 504849 0 0 3 0x14200 aiodoned aiodoned 54449 40100 0 0 3 0x14200 syncer update 72364 490103 0 0 3 0x14200 cleaner cleaner 24512 188871 0 0 3 0x14200 reaper reaper 32057 340089 0 0 3 0x14200 pgdaemon pagedaemon 77487 339545 0 0 3 0x14200 bored crynlk 5368 496263 0 0 3 0x14200 bored crypto 73140 435144 0 0 3 0x40014200 acpi0 acpi0 63646 109469 0 0 3 0x14200 bored softnet 35869 8625 0 0 3 0x14200 bored systqmp 51467 363651 0 0 3 0x14200 bored systq 76553 444731 0 0 3 0x40014200 bored softclock 81620 484906 0 0 3 0x40014200 idle0 76230 14074 0 0 3 0x14200 bored smr 1 399197 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 Kern Lim devbuf 9590 6393K 7266K 78643K 33274 0 0 pcb 13 8K 8K 78643K 792 0 0 rtable 102 12K 13K 78643K 2277 0 0 ifaddr 85 19K 20K 78643K 764 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 349 0 0 iov 0 0K 32K 78643K 642 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1217 76K 77K 78643K 8684 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 124 0 0 VM map 2 0K 0K 78643K 12 0 0 sem 12 0K 0K 78643K 908 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 7230 0 0 sigio 0 0K 0K 78643K 486 0 0 proc 50 38K 55K 78643K 1832 0 0 subproc 32 2K 2K 78643K 437 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 632 0 0 in_multi 22 1K 2K 78643K 426 0 0 ether_multi 1 0K 0K 78643K 31 0 0 mrt 2 0K 0K 78643K 24 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 126 556K 556K 78643K 126 0 0 exec 0 0K 1K 78643K 1012 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 124 23K 32K 78643K 22358 0 0 UVM aobj 130 4K 4K 78643K 145 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 752 0 0 NDP 21 0K 1K 78643K 239 0 0 temp 360 3544K 3617K 78643K 128229 0 0 kqueue 0 0K 0K 78643K 49 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 58 0 54 1 0 1 1 0 8 0 rtpcb 80 395 0 393 1 0 1 1 0 8 0 rtentry 112 294 0 259 2 0 2 2 0 8 0 unpcb 120 2733 0 2714 3 2 1 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 5890 0 5890 1 1 0 1 0 8 0 tcpcb 544 9006 0 9000 45 44 1 3 0 8 0 ipq 40 9 0 9 5 5 0 1 0 8 0 ipqe 40 23 0 23 5 5 0 1 0 8 0 inpcb 280 11725 0 11717 19 18 1 3 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 50 0 48 1 0 1 1 0 8 0 pkpcb 40 22 0 22 9 9 0 1 0 8 0 swfcl 56 6 0 0 1 0 1 1 0 8 0 ppxss 1128 105 0 105 52 52 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1277 0 1105 23 12 11 14 0 8 0 art_table 32 1278 0 1105 2 0 2 2 0 8 0 art_node 16 286 0 255 1 0 1 1 0 8 0 sysvmsgpl 40 57 0 40 2 1 1 1 0 8 0 semapl 112 906 0 896 1 0 1 1 0 8 0 shmpl 112 143 0 15 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 12069 0 10681 46 0 46 46 0 8 0 ffsino 240 12069 0 10681 83 0 83 83 0 8 0 nchpl 144 22779 0 21147 63 2 61 61 0 8 0 uvmvnodes 72 6265 0 0 114 0 114 114 0 8 0 vnodes 208 6265 0 0 330 0 330 330 0 8 0 namei 1024 76998 0 76998 6 5 1 1 0 8 1 vmpool 520 10 0 10 4 4 0 1 0 8 0 scsiplug 64 14 0 14 11 11 0 1 0 8 0 scxspl 192 74210 0 74210 22 21 1 7 0 8 1 plimitpl 152 541 0 534 1 0 1 1 0 8 0 sigapl 432 7332 0 7319 2 0 2 2 0 8 0 futexpl 56 155249 0 155249 6 5 1 1 0 8 1 knotepl 112 2718 0 2699 5 4 1 3 0 8 0 kqueuepl 104 4227 0 4225 1 0 1 1 0 8 0 pipepl 112 4312 0 4293 16 15 1 2 0 8 0 fdescpl 424 7333 0 7319 2 0 2 2 0 8 0 filepl 120 58247 0 58151 26 22 4 6 0 8 1 lockfpl 104 1931 0 1930 1 0 1 1 0 8 0 lockfspl 48 654 0 653 1 0 1 1 0 8 0 sessionpl 112 40 0 30 1 0 1 1 0 8 0 pgrppl 48 114 0 104 1 0 1 1 0 8 0 ucredpl 96 7457 0 7450 1 0 1 1 0 8 0 zombiepl 144 7321 0 7320 3 2 1 1 0 8 0 processpl 864 7351 0 7320 4 0 4 4 0 8 0 procpl 632 20534 0 20495 9 4 5 5 0 8 0 sosppl 128 93 0 93 30 30 0 1 0 8 0 sockpl 384 14955 0 14926 47 43 4 6 0 8 0 mcl64k 65536 3192 0 3192 215 215 0 33 0 8 0 mcl16k 16384 272 0 272 46 46 0 1 0 8 0 mcl12k 12288 299 0 299 38 38 0 1 0 8 0 mcl9k 9216 164 0 164 51 51 0 1 0 8 0 mcl8k 8192 1189 0 1189 5 4 1 1 0 8 1 mcl4k 4096 846 0 846 11 10 1 1 0 8 1 mcl2k2 2112 32 0 32 20 20 0 1 0 8 0 mcl2k 2048 75398 0 75352 55 48 7 17 0 8 0 mtagpl 80 140 0 139 9 8 1 1 0 8 0 mbufpl 256 204939 0 204858 161 144 17 39 0 8 0 bufpl 256 23734 0 17456 393 0 393 393 0 8 0 anonpl 16 744880 0 729876 372 308 64 103 0 62 0 amapchunkpl 152 42460 0 42354 135 129 6 34 0 158 0 amappl16 192 40836 0 39997 355 312 43 55 0 8 0 amappl15 184 265 0 265 5 5 0 1 0 8 0 amappl14 176 708 0 704 2 1 1 1 0 8 0 amappl13 168 1424 0 1422 4 3 1 1 0 8 0 amappl12 160 76 0 73 1 0 1 1 0 8 0 amappl11 152 812 0 800 1 0 1 1 0 8 0 amappl10 144 1127 0 1126 4 3 1 1 0 8 0 amappl9 136 1637 0 1631 1 0 1 1 0 8 0 amappl8 128 1228 0 1185 4 2 2 2 0 8 0 amappl7 120 1250 0 1243 1 0 1 1 0 8 0 amappl6 112 787 0 775 1 0 1 1 0 8 0 amappl5 104 995 0 985 1 0 1 1 0 8 0 amappl4 96 7467 0 7437 1 0 1 1 0 8 0 amappl3 88 1473 0 1467 1 0 1 1 0 8 0 amappl2 80 59183 0 59114 4 2 2 3 0 8 0 amappl1 72 151714 0 151313 28 19 9 20 0 8 0 amappl 80 21102 0 21066 3 1 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 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 144 0 15 3 0 3 3 0 8 0 uaddrrnd 24 7343 0 7319 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7343 0 7319 1 0 1 1 0 8 0 vmmpekpl 168 57928 0 57898 2 0 2 2 0 8 0 vmmpepl 168 888090 0 886186 645 553 92 118 0 357 0 vmsppl 272 7332 0 7319 9 8 1 2 0 8 0 pdppl 4096 14692 0 14658 6 1 5 6 0 8 0 pvpl 32 2085107 0 2066907 936 782 154 340 0 265 4 pmappl 200 7342 0 7329 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 1064 0 539 18 1 17 17 0 8 0