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(ffffffff82906bf8,ffff800000ac5600) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000ac7300) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000ac7300) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b1f000,ffff800000ac7300) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b1f000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b1f000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000212a6cd0) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d00,7) at tun_dev_close+0x140 sys/net/if_tun.c:476 spec_close(ffff8000212a6da0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e844328,7,fffffd807f7b78a0,ffff80002123c7e0) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd8069431d30,ffff80002123c7e0) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8069431d30,ffff80002123c7e0) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8069431d30,ffff80002123c7e0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8069431d30,ffff80002123c7e0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123c7e0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123c7e0,0,0,1) at exit1+0x335 sys/kern/kern_exit.c:200 sys_exit(ffff80002123c7e0,ffff8000212a7030,ffff8000212a7080) at sys_exit+0x16 sys/kern/kern_exit.c:96 syscall(ffff8000212a7100) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212a7100) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe81d0, count: -17 ddb{0}> show registers rdi 0xffffffff82906bf8 pfi_ifs rsi 0xffff800000ac5600 rbp 0xffff8000212a6b30 rbx 0xdeafbeaddeafbead rdx 0 rcx 0xffff800000ac7f80 rax 0xffff800000ac5610 r8 0xf8 r9 0x8080808080808080 r10 0x7020636db1efa2c1 r11 0x436941207931553d r12 0xdeafbeaddeafbead r13 0xffff800000b0ea80 r14 0xffff800000ac5600 r15 0xffffffff82906bf8 pfi_ifs rip 0xffffffff81f77a70 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000212a6ad0 ss 0 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{0}> show proc PROC (syz-executor.0) pid=245474 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff80002123da40,0xffff80002123cfd0 process=0xffff800021234880 user=0xffff8000212a2000, vmspace=0xfffffd807e42f740 estcpu=28, cpticks=1, pctcpu=0.2 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7870 442066 12301 0 2 0 syz-executor.1 12301 23224 35727 0 7 0x2 syz-executor.1 83053 493348 1 0 3 0x100083 ttyin getty 90163 394905 0 0 3 0x14200 bored sosplice 35727 288653 53262 0 3 0x82 thrsleep syz-fuzzer 35727 106371 53262 0 3 0x4000082 nanoslp syz-fuzzer 35727 126134 53262 0 3 0x4000082 thrsleep syz-fuzzer 35727 132009 53262 0 3 0x4000082 thrsleep syz-fuzzer 35727 354746 53262 0 3 0x4000082 thrsleep syz-fuzzer 35727 116496 53262 0 3 0x4000082 thrsleep syz-fuzzer 35727 159708 53262 0 3 0x4000082 thrsleep syz-fuzzer 35727 367080 53262 0 3 0x4000082 thrsleep syz-fuzzer 35727 421037 53262 0 3 0x4000082 kqread syz-fuzzer 53262 389708 27588 0 3 0x10008a sigsusp ksh 27588 271601 68389 0 3 0x92 select sshd 68389 165402 1 0 3 0x80 select sshd 32899 485485 53746 74 3 0x100092 bpf pflogd 53746 320350 1 0 3 0x80 netio pflogd 60813 145450 24972 73 3 0x100090 kqread syslogd 24972 63027 1 0 3 0x100082 netio syslogd 49716 231046 1 77 2 0x100090 dhclient 58919 192864 1 0 3 0x80 poll dhclient 92684 509890 0 0 3 0x14200 bored smr 53193 406908 0 0 2 0x14200 zerothread 48261 118392 0 0 3 0x14200 aiodoned aiodoned 57278 213467 0 0 3 0x14200 syncer update 46589 455155 0 0 3 0x14200 cleaner cleaner 96641 357725 0 0 3 0x14200 reaper reaper 43678 105429 0 0 3 0x14200 pgdaemon pagedaemon 11231 384696 0 0 3 0x14200 bored crynlk 62311 355788 0 0 3 0x14200 bored crypto 10136 513233 0 0 3 0x14200 bored viomb 55670 54169 0 0 3 0x40014200 acpi0 acpi0 47193 155023 0 0 3 0x40014200 idle1 73768 501593 0 0 3 0x14200 bored softnet 7816 260992 0 0 2 0x14200 systqmp 6069 127414 0 0 3 0x14200 bored systq 53015 151228 0 0 3 0x40014200 bored softclock 99069 269050 0 0 3 0x40014200 idle0 1 249456 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 9533 6433K 7458K 78643K 16237 0 pcb 13 8K 8K 78643K 273 0 rtable 86 3K 4K 78643K 885 0 ifaddr 76 15K 16K 78643K 291 0 sysctl 2 0K 0K 78643K 2 0 counters 46 34K 34K 78643K 130 0 ioctlops 0 0K 4K 78643K 1642 0 iov 0 0K 32K 78643K 123 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 3195 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 44 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 411 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 5679 0 sigio 0 0K 0K 78643K 29 0 proc 62 63K 95K 78643K 786 0 subproc 23 1K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 425 0 in_multi 22 1K 2K 78643K 496 0 ether_multi 1 0K 0K 78643K 127 0 mrt 0 0K 0K 78643K 21 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 2K 78643K 547 0 pfkey data 0 0K 1K 78643K 5 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 166 140K 156K 78643K 13865 0 UVM aobj 57 2K 2K 78643K 57 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 465 0 NDP 13 0K 0K 78643K 84 0 temp 139 3983K 4111K 78643K 30894 0 kqueue 3 4K 10K 78643K 183 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 31 0 27 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 142 0 140 1 0 1 1 0 8 0 rtentry 112 153 0 120 2 0 2 2 0 8 0 unpcb 120 1290 0 1267 2 1 1 2 0 8 0 syncache 296 29 0 29 6 6 0 1 0 8 0 tcpqe 32 24 0 24 6 6 0 1 0 8 0 tcpcb 736 1145 0 1138 17 14 3 6 0 8 1 inpcb 296 2418 0 2408 3 1 2 2 0 8 0 nd6 48 33 0 30 1 0 1 1 0 8 0 pkpcb 40 14 0 14 2 2 0 1 0 8 0 kcovpl 48 4 0 3 1 0 1 1 0 8 0 swfcl 56 8 0 0 1 0 1 1 0 8 0 ppxss 1128 17 0 17 3 3 0 1 0 8 0 pffrag 232 20 0 20 1 1 0 1 0 482 0 pffrnode 88 20 0 20 1 1 0 1 0 8 0 pffrent 40 920 0 920 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 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pfqueue 264 5 0 5 1 1 0 1 0 8 0 pfstitem 24 114 0 99 1 0 1 1 0 8 0 pfstkey 112 114 0 99 2 1 1 2 0 8 0 pfstate 328 114 0 99 6 4 2 5 0 8 0 pfrule 1360 51 0 31 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 501 0 322 12 0 12 12 0 8 0 art_table 32 502 0 322 2 0 2 2 0 8 0 art_node 16 152 0 113 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 8 2 1 1 1 0 8 0 semapl 112 409 0 399 1 0 1 1 0 8 0 shmpl 112 54 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8398 0 6994 90 1 89 89 0 8 0 ffsino 272 8398 0 6994 94 0 94 94 0 8 0 nchpl 144 14970 0 13386 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 37045 0 37045 1 0 1 1 0 8 1 percpumem 16 76 0 42 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 560 16 0 8 1 0 1 1 0 8 0 scxspl 216 45019 0 45019 14 11 3 8 0 8 3 plimitpl 152 227 0 219 1 0 1 1 0 8 0 sigapl 424 5891 0 5858 4 0 4 4 0 8 0 futexpl 56 38161 0 38161 1 0 1 1 0 8 1 knotepl 112 277 0 263 1 0 1 1 0 8 0 kqueuepl 168 2147 0 2145 1 0 1 1 0 8 0 pipepl 336 219 0 211 7 5 2 2 0 8 1 fdescpl 496 5874 0 5858 3 0 3 3 0 8 0 filepl 152 18531 0 18444 5 0 5 5 0 8 1 lockfpl 104 880 0 879 1 0 1 1 0 8 0 lockfspl 48 279 0 278 1 0 1 1 0 8 0 sessionpl 144 21 0 10 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 2322 0 2309 1 0 1 1 0 8 0 zombiepl 144 5859 0 5858 1 0 1 1 0 8 0 processpl 1080 5891 0 5858 3 0 3 3 0 8 0 procpl 672 12720 0 12679 9 4 5 5 0 8 1 sosppl 168 88 0 88 4 4 0 1 0 8 0 sockpl 432 3873 0 3837 11 6 5 6 0 8 0 mcl64k 65536 21 0 0 3 0 3 3 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k 2048 231 0 0 16 0 16 16 0 8 0 mtagpl 96 333 0 0 8 0 8 8 0 8 0 mbufpl 256 1060 0 0 59 0 59 59 0 8 0 bufpl 280 14041 0 7792 447 0 447 447 0 8 0 anonpl 16 427316 0 422110 48 22 26 36 0 124 1 amapchunkpl 152 26345 0 26186 36 24 12 21 0 158 5 amappl16 192 20558 0 20331 27 14 13 21 0 8 0 amappl15 184 2 0 1 2 1 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 38 0 36 1 0 1 1 0 8 0 amappl12 160 2777 0 2774 1 0 1 1 0 8 0 amappl11 152 1716 0 1697 1 0 1 1 0 8 0 amappl10 144 17 0 12 1 0 1 1 0 8 0 amappl9 136 121 0 120 2 1 1 1 0 8 0 amappl8 128 257 0 179 3 0 3 3 0 8 0 amappl7 120 368 0 359 1 0 1 1 0 8 0 amappl6 112 80 0 66 1 0 1 1 0 8 0 amappl5 104 3815 0 3796 1 0 1 1 0 8 0 amappl4 96 4719 0 4685 1 0 1 1 0 8 0 amappl3 88 258 0 251 1 0 1 1 0 8 0 amappl2 80 49112 0 49040 3 1 2 3 0 8 0 amappl1 72 170988 0 170516 24 14 10 19 0 8 0 amappl 80 13094 0 13030 2 0 2 2 0 84 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 56 0 0 1 0 1 1 0 8 0 uaddrrnd 24 5890 0 5866 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5890 0 5866 1 0 1 1 0 8 0 vmmpekpl 168 31211 0 31181 2 0 2 2 0 8 0 vmmpepl 168 736988 0 735490 106 33 73 78 0 357 1 vmsppl 368 5889 0 5866 3 0 3 3 0 8 0 pdppl 4096 11787 0 11740 67 18 49 51 0 8 2 pvpl 32 2085189 0 2076696 185 100 85 117 0 265 7 pmappl 232 5889 0 5866 3 1 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 383 0 41 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pfi_ifhead_RB_REMOVE(ffffffff82906bf8,ffff800000ac5600) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000ac7300) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000ac7300) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b1f000,ffff800000ac7300) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b1f000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b1f000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000212a6cd0) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d00,7) at tun_dev_close+0x140 sys/net/if_tun.c:476 spec_close(ffff8000212a6da0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e844328,7,fffffd807f7b78a0,ffff80002123c7e0) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd8069431d30,ffff80002123c7e0) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8069431d30,ffff80002123c7e0) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8069431d30,ffff80002123c7e0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd8069431d30,ffff80002123c7e0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123c7e0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123c7e0,0,0,1) at exit1+0x335 sys/kern/kern_exit.c:200 sys_exit(ffff80002123c7e0,ffff8000212a7030,ffff8000212a7080) at sys_exit+0x16 sys/kern/kern_exit.c:96 syscall(ffff8000212a7100) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212a7100) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe81d0, 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(ffffffff828bf3c0) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828bf3c0) at __mp_lock+0x129 sys/kern/kern_lock.c:147 syscall(ffff8000212a1900) at syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff8000212a1900) at syscall+0x3fd sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe6df0, count: -6