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(ffffffff8293a148,ffff800000b27e00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af6180) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af6180) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b31800,ffff800000af6180) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b31800) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b31800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000222c3730) 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(ffff8000222c3800) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd80796715c8,7,fffffd807f7b79c0,ffff80002128f500) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806cb60568,ffff80002128f500) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cb60568,ffff80002128f500) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cb60568,ffff80002128f500) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cb60568,ffff80002128f500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002128f500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002128f500,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff80002128f500,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002128f500,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002128f500) at userret+0x189 sys/kern/kern_sig.c:1914 syscall(ffff8000222c3c80) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000222c3c80) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc15b0, count: -18 ddb{0}> show registers rdi 0xffffffff8293a148 pfi_ifs rsi 0xffff800000b27e00 rbp 0xffff8000222c3590 rbx 0xdeaf4152deaf4152 rdx 0 rcx 0xffff800000af6f00 rax 0xffff800000b27e10 r8 0x101010101010101 r9 0x8080808080808080 r10 0xed86fcb14f00a55f r11 0xf1b5c1717973acba r12 0xdeaf4152deaf4152 r13 0xffff800000afb320 r14 0xffff800000b27e00 r15 0xffffffff8293a148 pfi_ifs rip 0xffffffff81fde590 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000222c3530 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{0}> show proc PROC (syz-executor.1) pid=420285 stat=onproc flags process=a proc=2000 pri=32, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff80002128fce0,0xffffffff8291b6b8 process=0xffff800021234880 user=0xffff8000222be000, vmspace=0xfffffd8008496a10 estcpu=36, cpticks=0, pctcpu=0.57 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6781 505229 280 0 3 0x82 piperd syz-executor.0 280 74898 83886 0 3 0x82 thrsleep syz-fuzzer 280 394419 83886 0 3 0x4000082 nanoslp syz-fuzzer 280 119074 83886 0 3 0x4000082 thrsleep syz-fuzzer 280 171047 83886 0 3 0x4000082 kqread syz-fuzzer 280 137685 83886 0 3 0x4000082 thrsleep syz-fuzzer 280 117772 83886 0 3 0x4000082 thrsleep syz-fuzzer 280 515582 83886 0 3 0x4000082 thrsleep syz-fuzzer 280 93564 83886 0 3 0x4000082 thrsleep syz-fuzzer 83886 352549 46593 0 3 0x10008a sigsusp ksh 46593 239106 73650 0 3 0x92 select sshd 63544 444402 1 0 3 0x100083 ttyopn getty 73650 8299 1 0 3 0x80 select sshd 5624 243631 51456 74 3 0x100092 bpf pflogd 51456 451778 1 0 3 0x80 netio pflogd 67776 163235 45376 73 3 0x100090 kqread syslogd 45376 481374 1 0 3 0x100082 netio syslogd 42147 435963 1 77 7 0x100090 dhclient 85844 185054 1 0 3 0x80 poll dhclient 50051 495852 0 0 3 0x14200 bored smr 72311 120071 0 0 3 0x14200 pgzero zerothread 7591 418297 0 0 3 0x14200 aiodoned aiodoned 15404 201610 0 0 3 0x14200 syncer update 34485 519932 0 0 3 0x14200 cleaner cleaner 17386 208575 0 0 3 0x14200 reaper reaper 72608 117989 0 0 3 0x14200 pgdaemon pagedaemon 55758 242405 0 0 3 0x14200 bored crynlk 76122 69524 0 0 3 0x14200 bored crypto 44869 150985 0 0 3 0x14200 bored viomb 36608 514032 0 0 3 0x40014200 acpi0 acpi0 77719 17970 0 0 3 0x40014200 idle1 91522 384112 0 0 3 0x14200 bored softnet 2316 382058 0 0 2 0x14200 systqmp 15978 193290 0 0 3 0x14200 bored systq 63346 379133 0 0 3 0x40014200 bored softclock 78867 378497 0 0 3 0x40014200 idle0 1 87601 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 9532 6445K 7082K 78643K 13227 0 pcb 13 8K 8K 78643K 102 0 rtable 81 2K 3K 78643K 621 0 ifaddr 69 13K 14K 78643K 215 0 counters 46 34K 34K 78643K 96 0 ioctlops 0 0K 4K 78643K 1606 0 iov 0 0K 24K 78643K 180 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 2201 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 27 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 151 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 2352 0 sigio 0 0K 0K 78643K 20 0 proc 62 63K 95K 78643K 680 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 166 0 in_multi 22 1K 2K 78643K 245 0 ether_multi 1 0K 0K 78643K 44 0 mrt 0 0K 0K 78643K 8 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 500 0 pfkey data 0 0K 1K 78643K 4 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 125 25K 42K 78643K 6225 0 UVM aobj 26 7K 7K 78643K 26 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 109 0 NDP 13 0K 0K 78643K 57 0 temp 140 3983K 4049K 78643K 16902 0 kqueue 3 4K 24K 78643K 198 0 SYN cache 2 12K 20K 78643K 3 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 25 0 21 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 180 0 178 1 0 1 1 0 8 0 rtentry 112 132 0 100 2 0 2 2 0 8 0 unpcb 120 465 0 455 1 0 1 1 0 8 0 syncache 296 16 0 16 2 2 0 1 0 8 0 tcpqe 32 79 0 79 3 2 1 1 0 8 1 tcpcb 736 342 0 338 11 10 1 5 0 8 0 inpcb 296 976 0 969 4 3 1 2 0 8 0 nd6 48 38 0 35 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 2 0 1 0 8 0 kcovpl 48 3 0 2 1 0 1 1 0 8 0 ppxss 1128 21 0 20 1 0 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 pfstitem 24 46 0 44 1 0 1 1 0 8 0 pfstkey 112 46 0 44 2 1 1 2 0 8 0 pfstate 328 46 0 44 4 3 1 4 0 8 0 pfrule 1360 57 0 51 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 249 0 64 12 0 12 12 0 8 0 art_table 32 250 0 64 2 0 2 2 0 8 0 art_node 16 123 0 88 1 0 1 1 0 8 0 semupl 112 10 0 10 1 1 0 1 0 8 0 semapl 112 149 0 139 1 0 1 1 0 8 0 shmpl 112 23 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4643 0 3242 90 2 88 89 0 8 0 ffsino 272 4643 0 3242 94 0 94 94 0 8 0 nchpl 144 7631 0 6041 60 0 60 60 0 8 0 uvmvnodes 72 5281 0 0 97 0 97 97 0 8 0 vnodes 224 5281 0 0 311 0 311 311 0 8 0 namei 1024 19612 0 19612 1 0 1 1 0 8 1 percpumem 16 59 0 25 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 26 0 22 1 0 1 1 0 8 0 scxspl 216 25878 0 25878 10 9 1 6 0 8 1 plimitpl 152 123 0 115 1 0 1 1 0 8 0 sigapl 424 2565 0 2534 4 0 4 4 0 8 0 futexpl 56 16137 0 16137 1 0 1 1 0 8 1 knotepl 112 697 0 679 2 1 1 2 0 8 0 kqueuepl 168 769 0 767 1 0 1 1 0 8 0 pipepl 336 179 0 169 7 5 2 2 0 8 1 fdescpl 496 2549 0 2534 3 0 3 3 0 8 0 filepl 152 8944 0 8853 5 0 5 5 0 8 1 lockfpl 104 458 0 457 1 0 1 1 0 8 0 lockfspl 48 182 0 181 1 0 1 1 0 8 0 sessionpl 144 19 0 8 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 1354 0 1345 1 0 1 1 0 8 0 zombiepl 144 2535 0 2534 1 0 1 1 0 8 0 processpl 1080 2565 0 2534 3 0 3 3 0 8 0 procpl 672 5430 0 5392 4 0 4 4 0 8 0 sockpl 432 1631 0 1612 8 5 3 4 0 8 0 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl12k 12288 18 0 0 2 0 2 2 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 163 0 0 14 0 14 14 0 8 0 mtagpl 96 208 0 0 6 0 6 6 0 8 0 mbufpl 256 703 0 0 39 0 39 39 0 8 0 bufpl 280 9506 0 3257 447 0 447 447 0 8 0 anonpl 24 183858 0 178478 38 4 34 37 0 186 0 amapchunkpl 152 20665 0 20504 40 32 8 27 0 158 0 amappl16 200 7923 0 7740 13 2 11 12 0 8 1 amappl15 192 3 0 1 1 0 1 1 0 8 0 amappl14 184 25 0 20 1 0 1 1 0 8 0 amappl13 176 32 0 30 1 0 1 1 0 8 0 amappl12 168 920 0 917 1 0 1 1 0 8 0 amappl11 160 59 0 41 1 0 1 1 0 8 0 amappl10 152 1178 0 1171 1 0 1 1 0 8 0 amappl9 144 16 0 15 1 0 1 1 0 8 0 amappl8 136 652 0 600 2 0 2 2 0 8 0 amappl7 128 257 0 249 1 0 1 1 0 8 0 amappl6 120 1234 0 1225 1 0 1 1 0 8 0 amappl5 112 2330 0 2313 1 0 1 1 0 8 0 amappl4 104 1214 0 1182 2 1 1 2 0 8 0 amappl3 96 182 0 174 1 0 1 1 0 8 0 amappl2 88 20390 0 20326 3 1 2 3 0 8 0 amappl1 80 78880 0 78430 29 18 11 21 0 8 0 amappl 88 5809 0 5754 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 25 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2575 0 2556 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2575 0 2556 1 0 1 1 0 8 0 vmmpekpl 168 15335 0 15307 2 0 2 2 0 8 0 vmmpepl 168 323671 0 322371 93 24 69 77 0 357 1 vmsppl 368 2574 0 2556 2 0 2 2 0 8 0 rwobjpl 56 67722 0 66841 25 11 14 19 0 8 0 pdppl 4096 5157 0 5116 63 18 45 47 0 8 4 pvpl 32 900445 0 892079 138 59 79 117 0 265 6 pmappl 232 2574 0 2556 3 1 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 346 0 38 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pfi_ifhead_RB_REMOVE(ffffffff8293a148,ffff800000b27e00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af6180) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af6180) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b31800,ffff800000af6180) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b31800) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b31800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000222c3730) 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(ffff8000222c3800) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd80796715c8,7,fffffd807f7b79c0,ffff80002128f500) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806cb60568,ffff80002128f500) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cb60568,ffff80002128f500) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cb60568,ffff80002128f500) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cb60568,ffff80002128f500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002128f500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002128f500,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff80002128f500,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002128f500,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002128f500) at userret+0x189 sys/kern/kern_sig.c:1914 syscall(ffff8000222c3c80) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000222c3c80) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc15b0, count: -18 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x37 kd_curproc sys/dev/kcov.c:570 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x37 sys/dev/kcov.c:143 __mp_lock(ffffffff8291b6c0) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8291b6c0) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff8291b6c0,2) 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(ffff8000212000d8,1) at sleep_finish+0x111 sys/kern/kern_synch.c:427 sleep_finish_all(ffff8000212000d8,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:457 [inline] sleep_finish_all(ffff8000212000d8,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:402 tsleep(ffffffff8293d830,118,ffffffff824243e9,41ba91) at tsleep+0x1f2 sys/kern/kern_synch.c:163 doppoll(ffff8000211c3a48,7f7ffffc8930,3,ffff800021200268,0,ffff800021200320) at doppoll+0x577 sys_poll(ffff8000211c3a48,ffff8000212002d0,ffff800021200320) at sys_poll+0xa7 syscall(ffff8000212003a0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000212003a0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc8910, count: -14