kernel: protection fault trap, code=0 Stopped at pfi_ifhead_RB_REMOVE+0x58: movq 0x10(%r15),%rbx ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace pfi_ifhead_RB_REMOVE(ffffffff822d4620,ffff8000009c2000) at pfi_ifhead_RB_REMOVE+0x58 sys/net/pf_if.c:80 pfi_detach_ifnet(ffff8000009c1000) at pfi_detach_ifnet+0x11e pfi_kif_unref sys/net/pf_if.c:199 [inline] pfi_detach_ifnet(ffff8000009c1000) at pfi_detach_ifnet+0x11e sys/net/pf_if.c:257 if_detach(ffff8000009c1000) at if_detach+0x15d sys/net/if.c:1120 tun_clone_destroy(ffff8000009c1000) at tun_clone_destroy+0x1c6 sys/net/if_tun.c:278 spec_close(ffff800014976778) at spec_close+0x3b0 sys/kern/spec_vnops.c:553 VOP_CLOSE(fffffd802b2f5058,81,fffffd803f7c6ae0,ffff800014970ae0) at VOP_CLOSE+0x64 sys/kern/vfs_vops.c:174 vn_closefile(fffffd802fc1ce20,ffff800014970ae0) at vn_closefile+0x14b vn_close sys/kern/vfs_vnops.c:289 [inline] vn_closefile(fffffd802fc1ce20,ffff800014970ae0) at vn_closefile+0x14b sys/kern/vfs_vnops.c:575 fdrop(fffffd802fc1ce20,ffff800014970ae0) at fdrop+0xc9 sys/kern/kern_descrip.c:1260 closef(fffffd802fc1ce20,ffff800014970ae0) at closef+0x118 sys/kern/kern_descrip.c:1244 fdfree(ffff800014970ae0) at fdfree+0xf7 sys/kern/kern_descrip.c:1176 exit1(ffff800014970ae0,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014970ae0,ffff800014976a10,ffff800014976a80) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800014976ae0) at syscall+0x508 Xsyscall(6,1,0,1,0,7f7ffffe8964) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8930, count: -14 ddb> show registers rdi 0xffffffff822d4620 pfi_ifs rsi 0xffff8000009c2000 rbp 0xffff800014976600 rbx 0xdead4110dead4110 rdx 0x28 rcx 0xe221d85b5d74c83f rax 0xffff8000009c2010 r8 0x101010101010101 r9 0x5 r10 0x359a5d450577cfe3 r11 0x99e46fa68264211c r12 0xffffffff822d4620 pfi_ifs r13 0 r14 0xffff8000009c2000 r15 0xdead4110dead4110 rip 0xffffffff81f06808 pfi_ifhead_RB_REMOVE+0x58 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000149765a0 ss 0x10 pfi_ifhead_RB_REMOVE+0x58: movq 0x10(%r15),%rbx ddb> show proc PROC (syz-executor.0) pid=447723 stat=onproc flags process=1008 proc=2000 pri=50, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800014902118,0xffff80001496f770 process=0xffff8000ffffb3f0 user=0xffff800014971000, vmspace=0xfffffd803f014cc0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46767 69051 68897 0 2 0 syz-executor.1 46767 427161 68897 0 3 0x4000080 fsleep syz-executor.1 18967 350951 1 0 3 0x100083 ttyin getty 66926 248054 0 0 3 0x14200 bored sosplice 64421 142409 57964 0 3 0x82 nanosleep syz-executor.0 68897 345319 57964 0 3 0x82 nanosleep syz-executor.1 57964 240513 60412 0 3 0x82 kqread syz-fuzzer 57964 78116 60412 0 3 0x4000082 thrsleep syz-fuzzer 57964 188072 60412 0 3 0x4000082 thrsleep syz-fuzzer 57964 158427 60412 0 3 0x4000082 thrsleep syz-fuzzer 57964 179505 60412 0 3 0x4000082 thrsleep syz-fuzzer 57964 440793 60412 0 3 0x4000082 thrsleep syz-fuzzer 57964 69560 60412 0 3 0x4000082 thrsleep syz-fuzzer 60412 413682 31963 0 3 0x10008a pause ksh 31963 325460 18548 0 3 0x92 select sshd 18548 483484 1 0 3 0x80 select sshd 52072 39958 7024 73 3 0x100090 kqread syslogd 7024 129205 1 0 3 0x100082 netio syslogd 87362 12690 1 77 3 0x100090 poll dhclient 59011 126865 1 0 3 0x80 poll dhclient 27340 46372 0 0 2 0x14200 zerothread 42646 336346 0 0 3 0x14200 aiodoned aiodoned 19307 255754 0 0 3 0x14200 syncer update 17971 402209 0 0 3 0x14200 cleaner cleaner 84424 255423 0 0 3 0x14200 reaper reaper 96999 178869 0 0 3 0x14200 pgdaemon pagedaemon 81267 51563 0 0 3 0x14200 bored crynlk 79522 201446 0 0 3 0x14200 bored crypto 19874 213246 0 0 3 0x40014200 acpi0 acpi0 83983 332758 0 0 2 0x14200 softnet 59326 42569 0 0 3 0x14200 bored systqmp 43861 523564 0 0 3 0x14200 bored systq 74974 518431 0 0 3 0x40014200 bored softclock 79617 441625 0 0 3 0x40014200 idle0 13571 215154 0 0 3 0x14200 bored smr 1 482797 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 9488 6407K 6920K 78643K 12935 0 0 pcb 23 9K 10K 78643K 449 0 0 rtable 108 3K 4K 78643K 370 0 0 ifaddr 51 12K 13K 78643K 140 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 55 0 0 iov 0 0K 24K 78643K 102 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1210 76K 76K 78643K 2021 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 19 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 62 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 880 0 0 sigio 0 0K 0K 78643K 14 0 0 proc 41 30K 54K 78643K 394 0 0 subproc 32 2K 2K 78643K 38 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 73 0 0 in_multi 33 2K 2K 78643K 51 0 0 ether_multi 1 0K 0K 78643K 4 0 0 mrt 0 0K 0K 78643K 5 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 223 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 82 20K 24K 78643K 2914 0 0 UVM aobj 47 4K 4K 78643K 53 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 29 0 0 NDP 10 0K 0K 78643K 38 0 0 temp 154 2715K 2784K 78643K 5765 0 0 kqueue 0 0K 0K 78643K 2 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 6 0 0 1 0 1 1 0 8 0 inpcbpl 280 372 0 365 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 56 0 56 1 1 0 1 0 8 0 tcpcb 544 118 0 114 1 0 1 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 17 0 17 5 4 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 8 1 0 1 1 0 8 0 semapl 112 60 0 50 1 0 1 1 0 8 0 shmpl 112 51 0 6 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2822 0 1401 46 0 46 46 0 8 0 ffsino 240 2822 0 1401 84 0 84 84 0 8 0 nchpl 144 4213 0 2589 61 0 61 61 0 8 0 uvmvnodes 72 3410 0 0 62 0 62 62 0 8 0 vnodes 200 3410 0 0 180 0 180 180 0 8 0 namei 1024 12161 0 12161 2 1 1 1 0 8 1 scxspl 192 13110 0 13110 11 10 1 5 0 8 1 plimitpl 152 43 0 36 1 0 1 1 0 8 0 sigapl 432 1052 0 1038 2 0 2 2 0 8 0 futexpl 56 14060 0 14059 1 0 1 1 0 8 0 knotepl 112 183 0 164 1 0 1 1 0 8 0 kqueuepl 104 188 0 186 1 0 1 1 0 8 0 pipepl 112 498 0 479 2 1 1 1 0 8 0 fdescpl 424 1053 0 1038 2 0 2 2 0 8 0 filepl 120 5850 0 5754 4 0 4 4 0 8 1 lockfpl 104 395 0 395 2 1 1 1 0 8 1 lockfspl 48 132 0 132 2 1 1 1 0 8 1 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 14 1 0 1 1 0 8 0 ucredpl 96 1027 0 1020 1 0 1 1 0 8 0 zombiepl 144 1039 0 1038 2 1 1 1 0 8 0 processpl 848 1068 0 1038 4 0 4 4 0 8 0 procpl 624 2194 0 2157 4 0 4 4 0 8 1 sosppl 128 14 0 14 2 2 0 1 0 8 0 sockpl 384 758 0 741 3 0 3 3 0 8 1 mcl64k 65536 25 0 25 3 3 0 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 19 0 19 2 2 0 1 0 8 0 mcl9k 9216 12 0 12 2 1 1 1 0 8 1 mcl8k 8192 11 0 11 3 2 1 1 0 8 1 mcl4k 4096 41 0 41 3 2 1 1 0 8 1 mcl2k2 2112 2 0 2 2 2 0 1 0 8 0 mcl2k 2048 53260 0 53208 19 12 7 15 0 8 0 mtagpl 80 4 0 4 2 1 1 1 0 8 1 mbufpl 256 88084 0 88015 11 5 6 9 0 8 0 bufpl 256 7910 0 3429 281 0 281 281 0 8 0 anonpl 16 111798 0 101034 73 13 60 60 0 62 16 amapchunkpl 152 4326 0 4222 10 5 5 8 0 158 0 amappl16 192 5892 0 5300 66 28 38 42 0 8 8 amappl15 184 8 0 7 1 0 1 1 0 8 0 amappl14 176 39 0 35 2 1 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 9 0 9 1 1 0 1 0 8 0 amappl11 152 483 0 466 1 0 1 1 0 8 0 amappl10 144 483 0 480 2 1 1 1 0 8 0 amappl9 136 530 0 527 1 0 1 1 0 8 0 amappl8 128 121 0 109 1 0 1 1 0 8 0 amappl7 120 452 0 447 1 0 1 1 0 8 0 amappl6 112 478 0 469 1 0 1 1 0 8 0 amappl5 104 175 0 164 1 0 1 1 0 8 0 amappl4 96 1199 0 1174 1 0 1 1 0 8 0 amappl3 88 211 0 200 1 0 1 1 0 8 0 amappl2 80 7656 0 7584 4 2 2 3 0 8 0 amappl1 72 27143 0 26723 23 13 10 19 0 8 0 amappl 80 2443 0 2407 1 0 1 1 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 52 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1053 0 1038 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1053 0 1038 1 0 1 1 0 8 0 vmmpekpl 168 10246 0 10215 2 0 2 2 0 8 0 vmmpepl 168 128611 0 126905 127 42 85 88 0 357 10 vmsppl 272 1052 0 1038 2 1 1 2 0 8 0 pdppl 4096 2112 0 2076 6 1 5 6 0 8 0 pvpl 32 317447 0 303603 170 21 149 151 0 265 34 pmappl 200 1052 0 1038 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 438 0 30 13 1 12 13 0 8 0