kernel: protection fault trap, code=0 Stopped at pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace pfi_ifhead_RB_REMOVE(ffffffff8293b4c0,ffff800000b39800) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff80000002b000) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff80000002b000) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae5000,ffff80000002b000) at if_delgroup+0x193 sys/net/if.c:2676 if_detach(ffff800000ae5000) at if_detach+0x1ab sys/net/if.c:1039 tun_clone_destroy(ffff800000ae5000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000212aea90) at if_clone_destroy+0x146 sys/net/if.c:1198 tun_dev_close(5d00,7) at tun_dev_close+0x140 sys/net/if_tun.c:476 spec_close(ffff8000212aeb60) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806edd85c8,7,fffffd807f7b7840,ffff80002123dce0) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806a2e0ef8,ffff80002123dce0) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a2e0ef8,ffff80002123dce0) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806a2e0ef8,ffff80002123dce0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806a2e0ef8,ffff80002123dce0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123dce0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123dce0,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff80002123dce0,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002123dce0,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002123dce0) at userret+0x189 sys/kern/kern_sig.c:1914 syscall(ffff8000212aefe0) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000212aefe0) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe71c0, count: -18 ddb{1}> show registers rdi 0xffffffff8293b4c0 pfi_ifs rsi 0xffff800000b39800 rbp 0xffff8000212ae8f0 rbx 0xdeafbeaddeafbead rdx 0 rcx 0xffff800000af6a80 rax 0xffff800000b39810 r8 0xf8 r9 0x8080808080808080 r10 0x6dc8893fdbf02705 r11 0xea4485c8a4999b46 r12 0xdeafbeaddeafbead r13 0xffff800000b46da0 r14 0xffff800000b39800 r15 0xffffffff8293b4c0 pfi_ifs rip 0xffffffff8230a200 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000212ae890 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> show proc PROC (syz-executor.0) pid=131757 stat=onproc flags process=a proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80002123da40,0xffff80002123c550 process=0xffff800021235528 user=0xffff8000212aa000, vmspace=0xfffffd80084925c0 estcpu=36, cpticks=2, pctcpu=0.93 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75163 12762 73026 0 3 0x82 piperd syz-executor.1 86477 53464 1 0 3 0x100083 ttyin getty 48462 82366 0 0 3 0x14200 bored sosplice 73026 397778 35157 0 3 0x82 thrsleep syz-fuzzer 73026 437443 35157 0 3 0x4000082 nanoslp syz-fuzzer 73026 307211 35157 0 3 0x4000082 thrsleep syz-fuzzer 73026 404954 35157 0 3 0x4000082 thrsleep syz-fuzzer 73026 362011 35157 0 3 0x4000082 thrsleep syz-fuzzer 73026 246556 35157 0 3 0x4000082 thrsleep syz-fuzzer 73026 521968 35157 0 3 0x4000082 thrsleep syz-fuzzer 73026 265114 35157 0 3 0x4000082 kqread syz-fuzzer 35157 255842 73829 0 3 0x10008a sigsusp ksh 73829 469244 45736 0 3 0x92 select sshd 45736 12869 1 0 3 0x80 select sshd 29932 400202 67936 74 3 0x100092 bpf pflogd 67936 32586 1 0 3 0x80 netio pflogd 62057 446949 98951 73 3 0x100090 kqread syslogd 98951 208928 1 0 3 0x100082 netio syslogd 69097 96389 1 77 7 0x100090 dhclient 53302 20772 1 0 3 0x80 poll dhclient 33266 507952 0 0 3 0x14200 bored smr 48088 399092 0 0 3 0x14200 pgzero zerothread 49833 383255 0 0 3 0x14200 aiodoned aiodoned 57669 403012 0 0 3 0x14200 syncer update 38831 405554 0 0 3 0x14200 cleaner cleaner 4686 444547 0 0 3 0x14200 reaper reaper 84200 58403 0 0 3 0x14200 pgdaemon pagedaemon 16575 240692 0 0 3 0x14200 bored crynlk 39299 417930 0 0 3 0x14200 bored crypto 33084 384251 0 0 3 0x14200 bored viomb 96385 428059 0 0 3 0x40014200 acpi0 acpi0 90239 278768 0 0 3 0x40014200 idle1 4864 41301 0 0 3 0x14200 bored softnet 77045 450098 0 0 2 0x14200 systqmp 41501 235359 0 0 3 0x14200 bored systq 97917 34571 0 0 3 0x40014200 bored softclock 63855 330571 0 0 3 0x40014200 idle0 1 487867 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9537 6446K 7197K 78643K 16279 0 pcb 13 8K 8K 78643K 221 0 rtable 88 3K 4K 78643K 676 0 ifaddr 70 13K 14K 78643K 180 0 sysctl 0 0K 0K 78643K 8 0 counters 44 34K 34K 78643K 80 0 ioctlops 0 0K 4K 78643K 1682 0 iov 0 0K 16K 78643K 160 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 3310 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 53 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 219 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 6635 0 sigio 0 0K 0K 78643K 41 0 proc 62 63K 95K 78643K 648 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 274 0 in_multi 22 1K 2K 78643K 262 0 ether_multi 1 0K 0K 78643K 56 0 mrt 0 0K 0K 78643K 49 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 675 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 180 93K 108K 78643K 16059 0 UVM aobj 114 3K 3K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 203 0 NDP 13 0K 0K 78643K 58 0 temp 139 3985K 4050K 78643K 42883 0 kqueue 3 4K 22K 78643K 274 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 10 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 202 0 200 1 0 1 1 0 8 0 rtentry 112 132 0 99 2 0 2 2 0 8 0 unpcb 120 1346 0 1321 5 4 1 2 0 8 0 syncache 296 31 0 31 5 4 1 1 0 8 1 tcpqe 32 88 0 88 2 2 0 1 0 8 0 tcpcb 736 660 0 656 19 17 2 4 0 8 1 inpcb 296 1878 0 1871 9 8 1 2 0 8 0 rttmr 72 17 0 17 2 2 0 1 0 8 0 nd6 48 33 0 30 1 0 1 1 0 8 0 pkpcb 40 30 0 30 5 4 1 1 0 8 1 kcovpl 48 4 0 3 1 0 1 1 0 8 0 ppxss 1128 8 0 8 2 2 0 1 0 8 0 pffrag 232 3 0 3 1 1 0 1 0 482 0 pffrnode 88 3 0 3 1 1 0 1 0 8 0 pffrent 40 5 0 5 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 2 0 0 1 0 1 1 0 8 0 pfstitem 24 20 0 18 1 0 1 1 0 8 0 pfstkey 112 20 0 18 1 0 1 1 0 8 0 pfstate 328 20 0 18 2 1 1 2 0 8 0 pfrule 1360 103 0 77 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 527 0 339 13 1 12 12 0 8 0 art_table 32 528 0 339 2 0 2 2 0 8 0 art_node 16 131 0 95 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 1 1 0 1 1 0 8 0 semupl 112 10 0 10 1 1 0 1 0 8 0 semapl 112 217 0 207 1 0 1 1 0 8 0 shmpl 112 134 0 23 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9220 0 7818 89 1 88 89 0 8 0 ffsino 272 9220 0 7818 95 1 94 95 0 8 0 nchpl 144 16752 0 15160 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 40859 0 40859 2 1 1 1 0 8 1 percpumem 16 51 0 18 1 0 1 1 0 8 0 vcpupl 1984 10 0 0 2 0 2 2 0 8 0 vmpool 560 10 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 20 0 5 1 0 1 1 0 8 0 scxspl 216 50551 0 50551 16 13 3 8 0 8 3 plimitpl 152 296 0 288 1 0 1 1 0 8 0 sigapl 424 6847 0 6815 4 0 4 4 0 8 0 futexpl 56 41349 0 41349 2 1 1 1 0 8 1 knotepl 112 651 0 633 2 1 1 2 0 8 0 kqueuepl 168 3494 0 3485 1 0 1 1 0 8 0 pipepl 336 220 0 210 8 7 1 2 0 8 0 fdescpl 496 6830 0 6815 3 0 3 3 0 8 0 filepl 152 20389 0 20298 5 0 5 5 0 8 0 lockfpl 104 458 0 457 1 0 1 1 0 8 0 lockfspl 48 176 0 175 1 0 1 1 0 8 0 sessionpl 144 21 0 10 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 2510 0 2501 1 0 1 1 0 8 0 zombiepl 144 6816 0 6814 2 1 1 1 0 8 0 processpl 1080 6847 0 6814 3 0 3 3 0 8 0 procpl 672 14885 0 14845 5 1 4 5 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 75 0 75 8 7 1 1 0 8 1 sockpl 432 3460 0 3426 7 2 5 6 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 15 0 0 2 0 2 2 0 8 0 mcl9k 9216 13 0 0 1 0 1 1 0 8 0 mcl8k 8192 20 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 1 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 289 0 0 20 1 19 20 0 8 0 mtagpl 96 236 0 0 6 0 6 6 0 8 0 mbufpl 256 800 0 0 48 0 48 48 0 8 0 bufpl 280 12559 0 6312 447 0 447 447 0 8 0 anonpl 16 486278 0 477844 69 33 36 50 0 124 0 amapchunkpl 152 26038 0 25859 23 8 15 21 0 158 7 amappl16 192 21567 0 21218 44 25 19 30 0 8 1 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 25 0 20 1 0 1 1 0 8 0 amappl13 168 43 0 39 1 0 1 1 0 8 0 amappl12 160 2647 0 2644 1 0 1 1 0 8 0 amappl11 152 3379 0 3361 1 0 1 1 0 8 0 amappl10 144 336 0 328 1 0 1 1 0 8 0 amappl9 136 334 0 333 1 0 1 1 0 8 0 amappl8 128 293 0 201 4 0 4 4 0 8 0 amappl7 120 590 0 582 1 0 1 1 0 8 0 amappl6 112 392 0 372 1 0 1 1 0 8 0 amappl5 104 4914 0 4895 1 0 1 1 0 8 0 amappl4 96 6277 0 6244 1 0 1 1 0 8 0 amappl3 88 200 0 193 1 0 1 1 0 8 0 amappl2 80 56347 0 56283 2 0 2 2 0 8 0 amappl1 72 192465 0 192014 24 14 10 19 0 8 0 amappl 80 15197 0 15136 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 64 136 0 23 2 0 2 2 0 8 0 uaddrrnd 24 6840 0 6815 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6840 0 6815 1 0 1 1 0 8 0 vmmpekpl 168 37502 0 37470 2 0 2 2 0 8 0 vmmpepl 168 854418 0 852895 123 42 81 87 0 357 4 vmsppl 368 6839 0 6815 3 0 3 3 0 8 0 pdppl 4096 13687 0 13640 70 19 51 51 0 8 4 pvpl 32 2710568 0 2699121 209 100 109 130 0 265 9 pmappl 232 6839 0 6815 3 1 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 388 0 51 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff826e8ff0) 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(ffffffff828b9310) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828b9310) at __mp_lock+0x129 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828b9310,2) 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(ffff800021200c58,1) at sleep_finish+0x111 sys/kern/kern_synch.c:427 sleep_finish_all(ffff800021200c58,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:457 [inline] sleep_finish_all(ffff800021200c58,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:402 tsleep(ffffffff828c9c6c,118,ffffffff8241d998,418b4d) at tsleep+0x1f2 sys/kern/kern_synch.c:163 doppoll(ffff8000211c3a48,7f7ffffe90d0,3,ffff800021200de8,0,ffff800021200ea0) at doppoll+0x577 sys_poll(ffff8000211c3a48,ffff800021200e50,ffff800021200ea0) at sys_poll+0xa7 syscall(ffff800021200f20) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021200f20) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe90b0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> trace pfi_ifhead_RB_REMOVE(ffffffff8293b4c0,ffff800000b39800) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff80000002b000) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff80000002b000) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae5000,ffff80000002b000) at if_delgroup+0x193 sys/net/if.c:2676 if_detach(ffff800000ae5000) at if_detach+0x1ab sys/net/if.c:1039 tun_clone_destroy(ffff800000ae5000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000212aea90) at if_clone_destroy+0x146 sys/net/if.c:1198 tun_dev_close(5d00,7) at tun_dev_close+0x140 sys/net/if_tun.c:476 spec_close(ffff8000212aeb60) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806edd85c8,7,fffffd807f7b7840,ffff80002123dce0) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806a2e0ef8,ffff80002123dce0) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a2e0ef8,ffff80002123dce0) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806a2e0ef8,ffff80002123dce0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806a2e0ef8,ffff80002123dce0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123dce0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123dce0,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff80002123dce0,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002123dce0,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002123dce0) at userret+0x189 sys/kern/kern_sig.c:1914 syscall(ffff8000212aefe0) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000212aefe0) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe71c0, count: -18