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(ffffffff82905da8,ffff800000b66d00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af6e00) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af6e00) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b54800,ffff800000af6e00) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b54800) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b54800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff800024acec60) 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(ffff800024aced30) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2c94e8,7,fffffd807f7b77e0,ffff800021273260) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806cb7e1d8,ffff800021273260) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cb7e1d8,ffff800021273260) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cb7e1d8,ffff800021273260) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cb7e1d8,ffff800021273260) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021273260) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800021273260,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff800021273260,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff800021273260,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff800021273260) at userret+0x189 sys/kern/kern_sig.c:1914 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffbf740, count: -17 ddb{0}> show registers rdi 0xffffffff82905da8 pfi_ifs rsi 0xffff800000b66d00 rbp 0xffff800024aceac0 rbx 0xdead4110dead4110 rdx 0 rcx 0xffff800000af6080 rax 0xffff800000b66d10 r8 0xf8 r9 0x8080808080808080 r10 0x8c58eb8f283cd21d r11 0x2d9a28e288a35080 r12 0xdead4110dead4110 r13 0xffff800000bc7c60 r14 0xffff800000b66d00 r15 0xffffffff82905da8 pfi_ifs rip 0xffffffff81bdb8b0 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff800024acea60 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{0}> show proc PROC (syz-executor.1) pid=195526 stat=onproc flags process=a proc=2000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800021272fc0,0xffff800021273a50 process=0xffff8000212350f0 user=0xffff800024aca000, vmspace=0xfffffd80084962e0 estcpu=30, cpticks=0, pctcpu=0.57 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 95747 455787 967 0 7 0x2 syz-executor.0 76027 293459 0 0 3 0x14200 bored sosplice 967 247665 98616 0 3 0x82 thrsleep syz-fuzzer 967 399590 98616 0 3 0x4000082 thrsleep syz-fuzzer 967 251275 98616 0 3 0x4000082 thrsleep syz-fuzzer 967 395321 98616 0 3 0x4000082 thrsleep syz-fuzzer 967 495488 98616 0 3 0x4000082 kqread syz-fuzzer 967 434253 98616 0 3 0x4000082 thrsleep syz-fuzzer 967 316518 98616 0 3 0x4000082 thrsleep syz-fuzzer 967 144880 98616 0 3 0x4000082 thrsleep syz-fuzzer 98616 314141 1982 0 3 0x10008a sigsusp ksh 1982 519511 36990 0 3 0x92 select sshd 30033 104438 1 0 3 0x100083 ttyin getty 36990 417886 1 0 3 0x80 select sshd 56878 284502 69754 74 3 0x100092 bpf pflogd 69754 333692 1 0 3 0x80 netio pflogd 58343 77592 39714 73 3 0x100090 kqread syslogd 39714 489990 1 0 3 0x100082 netio syslogd 20704 441686 1 77 2 0x100090 dhclient 15627 392656 1 0 3 0x80 poll dhclient 90751 330160 0 0 3 0x14200 bored smr 76077 272396 0 0 3 0x14200 pgzero zerothread 50217 248510 0 0 3 0x14200 aiodoned aiodoned 77123 314604 0 0 3 0x14200 syncer update 2049 270108 0 0 3 0x14200 cleaner cleaner 34145 90198 0 0 3 0x14200 reaper reaper 24701 345286 0 0 3 0x14200 pgdaemon pagedaemon 50348 409083 0 0 3 0x14200 bored crynlk 54219 107297 0 0 3 0x14200 bored crypto 97546 285463 0 0 3 0x14200 bored viomb 30860 250283 0 0 3 0x40014200 acpi0 acpi0 21426 189805 0 0 3 0x40014200 idle1 91677 523101 0 0 3 0x14200 bored softnet 35669 368641 0 0 2 0x14200 systqmp 32049 357693 0 0 3 0x14200 bored systq 18318 5609 0 0 3 0x40014200 bored softclock 867 501088 0 0 3 0x40014200 idle0 1 303278 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 95747 (syz-executor.0) thread 0xffff800021273a40 (455787) exclusive rwlock pipelk r = 0 (0xfffffd806f7cb520) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 pipe_write+0x36f sys/kern/sys_pipe.c:560 #2 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9546 6446K 7150K 78643K 15714 0 pcb 13 8K 8K 78643K 235 0 rtable 89 4K 5K 78643K 763 0 ifaddr 75 15K 16K 78643K 273 0 sysctl 3 1K 1K 78643K 3 0 counters 44 34K 34K 78643K 124 0 ioctlops 0 0K 4K 78643K 1647 0 iov 0 0K 24K 78643K 283 0 mount 1 1K 1K 78643K 1 0 vnodes 1235 78K 78K 78643K 3133 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 28 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 238 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 5757 0 sigio 0 0K 0K 78643K 51 0 proc 63 63K 95K 78643K 761 0 subproc 23 1K 2K 78643K 85 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 284 0 in_multi 22 1K 2K 78643K 156 0 ether_multi 1 0K 0K 78643K 37 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 2K 78643K 532 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 170 141K 141K 78643K 13957 0 UVM aobj 47 2K 2K 78643K 47 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 297 0 NDP 13 0K 0K 78643K 63 0 temp 140 3987K 4052K 78643K 58231 0 kqueue 3 4K 9K 78643K 176 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 12 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 190 0 188 1 0 1 1 0 8 0 rtentry 112 78 0 45 2 0 2 2 0 8 0 unpcb 120 1293 0 1283 2 1 1 2 0 8 0 syncache 296 78 0 78 7 7 0 1 0 8 0 tcpqe 32 40 0 40 5 5 0 1 0 8 0 tcpcb 736 852 0 844 21 19 2 6 0 8 0 inpcb 304 1992 0 1985 6 5 1 2 0 8 0 nd6 48 15 0 12 1 0 1 1 0 8 0 pkpcb 40 18 0 18 3 3 0 1 0 8 0 kcovpl 48 5 0 4 1 0 1 1 0 8 0 ppxss 1128 11 0 11 2 2 0 1 0 8 0 pfstscr 40 20 0 20 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 11 0 10 1 0 1 1 0 8 0 pfstitem 24 69 0 67 1 0 1 1 0 8 0 pfstkey 112 87 0 85 2 1 1 2 0 8 0 pfstate 328 77 0 75 4 3 1 4 0 8 0 pfrule 1360 86 0 70 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 330 0 135 13 0 13 13 0 8 0 art_table 32 331 0 135 2 0 2 2 0 8 0 art_node 16 77 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 75 0 63 2 1 1 1 0 8 0 semapl 112 236 0 226 1 0 1 1 0 8 0 shmpl 112 44 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8340 0 6925 91 2 89 89 0 8 0 ffsino 272 8340 0 6925 95 0 95 95 0 8 0 nchpl 144 14969 0 13376 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 37765 0 37765 2 1 1 1 0 8 1 percpumem 16 73 0 40 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 560 8 0 0 1 0 1 1 0 8 0 scxspl 216 46555 0 46555 13 12 1 8 0 8 1 plimitpl 152 324 0 316 1 0 1 1 0 8 0 sigapl 424 5965 0 5933 4 0 4 4 0 8 0 futexpl 56 37899 0 37899 2 1 1 1 0 8 1 knotepl 112 283 0 265 1 0 1 1 0 8 0 kqueuepl 168 2663 0 2661 1 0 1 1 0 8 0 pipepl 336 369 0 359 11 10 1 4 0 8 0 fdescpl 496 5948 0 5933 3 0 3 3 0 8 0 filepl 152 19641 0 19550 8 3 5 7 0 8 1 lockfpl 104 612 0 611 1 0 1 1 0 8 0 lockfspl 48 198 0 197 1 0 1 1 0 8 0 sessionpl 144 21 0 10 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 2888 0 2876 1 0 1 1 0 8 0 zombiepl 144 5934 0 5933 1 0 1 1 0 8 0 processpl 1080 5965 0 5933 3 0 3 3 0 8 0 procpl 672 12908 0 12869 4 0 4 4 0 8 0 sosppl 168 45 0 45 3 3 0 1 0 8 0 sockpl 432 3494 0 3475 10 7 3 7 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 13 0 0 2 0 2 2 0 8 0 mcl9k 9216 13 0 0 1 0 1 1 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 340 0 0 20 0 20 20 0 8 0 mtagpl 96 308 0 0 7 0 7 7 0 8 0 mbufpl 256 830 0 0 47 0 47 47 0 8 0 bufpl 280 12917 0 6668 447 0 447 447 0 8 0 anonpl 24 412545 0 405818 90 46 44 63 0 186 0 amapchunkpl 152 21329 0 21157 12 4 8 8 0 158 0 amappl16 200 18308 0 18050 40 25 15 26 0 8 0 amappl15 192 2856 0 2854 1 0 1 1 0 8 0 amappl14 184 599 0 596 1 0 1 1 0 8 0 amappl13 176 300 0 294 1 0 1 1 0 8 0 amappl12 168 17 0 16 2 1 1 1 0 8 0 amappl11 160 66 0 49 1 0 1 1 0 8 0 amappl10 152 18 0 13 1 0 1 1 0 8 0 amappl9 144 18 0 16 1 0 1 1 0 8 0 amappl8 136 4358 0 4271 4 0 4 4 0 8 0 amappl7 128 278 0 272 1 0 1 1 0 8 0 amappl6 120 78 0 67 1 0 1 1 0 8 0 amappl5 112 6099 0 6080 1 0 1 1 0 8 0 amappl4 104 887 0 861 1 0 1 1 0 8 0 amappl3 96 462 0 454 1 0 1 1 0 8 0 amappl2 88 47144 0 47080 3 1 2 3 0 8 0 amappl1 80 178105 0 177658 27 15 12 21 0 8 0 amappl 88 13252 0 13189 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 46 0 0 1 0 1 1 0 8 0 uaddrrnd 24 5956 0 5933 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5956 0 5933 1 0 1 1 0 8 0 vmmpekpl 168 29408 0 29373 2 0 2 2 0 8 0 vmmpepl 168 745656 0 744253 112 38 74 78 0 357 2 vmsppl 368 5955 0 5933 3 0 3 3 0 8 0 rwobjpl 56 155277 0 154300 33 18 15 19 0 8 0 pdppl 4096 11919 0 11874 67 18 49 49 0 8 4 pvpl 32 2198886 0 2189138 200 114 86 117 0 265 0 pmappl 232 5955 0 5933 3 1 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 389 0 53 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace pfi_ifhead_RB_REMOVE(ffffffff82905da8,ffff800000b66d00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af6e00) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af6e00) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b54800,ffff800000af6e00) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000b54800) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b54800) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff800024acec60) 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(ffff800024aced30) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2c94e8,7,fffffd807f7b77e0,ffff800021273260) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806cb7e1d8,ffff800021273260) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cb7e1d8,ffff800021273260) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cb7e1d8,ffff800021273260) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cb7e1d8,ffff800021273260) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021273260) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800021273260,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff800021273260,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff800021273260,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff800021273260) at userret+0x189 sys/kern/kern_sig.c:1914 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffbf740, 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(ffffffff828bbb38) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828bbb38) at __mp_lock+0x122 sys/kern/kern_lock.c:147 pipeselwakeup(fffffd806f7cb480) at pipeselwakeup+0x4e sys/kern/sys_pipe.c:366 pipe_write(fffffd806cb7e7c8,ffff80002128d908,0) at pipe_write+0x785 dofilewritev(ffff800021273a40,f8,ffff80002128d908,0,ffff80002128d9f0) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800021273a40,ffff80002128d9a0,ffff80002128d9f0) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff80002128da70) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002128da70) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd27e0, count: -10