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(ffffffff828f6958,ffff800000add700) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b49880) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b49880) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b15000,ffff800000b49880) at if_delgroup+0x193 sys/net/if.c:2700 if_detach(ffff800000b15000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b15000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000234c1040) 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(ffff8000234c1110) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806eddf788,7,fffffd807f7b7a80,ffff800021272540) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806cb68d20,ffff800021272540) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cb68d20,ffff800021272540) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cb68d20,ffff800021272540) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cb68d20,ffff800021272540) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021272540) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800021272540,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff800021272540,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff800021272540,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff800021272540) at userret+0x189 sys/kern/kern_sig.c:1914 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffddb30, count: -17 ddb{1}> show registers rdi 0xffffffff828f6958 pfi_ifs rsi 0xffff800000add700 rbp 0xffff8000234c0ea0 rbx 0xdeafbeaddeafbead rdx 0 rcx 0xffff800000b49d00 rax 0xffff800000add710 r8 0xf8 r9 0x8080808080808080 r10 0xda979353c771a4be r11 0xe1e7e8620211ec34 r12 0xdeafbeaddeafbead r13 0xffff800000b1cc60 r14 0xffff800000add700 r15 0xffffffff828f6958 pfi_ifs rip 0xffffffff813925d0 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000234c0e40 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> show proc PROC (syz-executor.1) pid=427706 stat=onproc flags process=a proc=2000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800021272a80,0xffff800021273510 process=0xffff800021235960 user=0xffff8000234bc000, vmspace=0xfffffd8065df85d8 estcpu=36, cpticks=0, pctcpu=0.20 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81466 397531 28091 0 3 0x80 nanoslp syz-executor.0 81466 357676 28091 0 3 0x4000080 bell syz-executor.0 28091 246296 45949 0 3 0x82 nanoslp syz-executor.0 14571 312354 1 0 3 0x100083 ttyopn getty 21331 363475 0 0 3 0x14200 bored sosplice 45949 427417 13506 0 3 0x82 thrsleep syz-fuzzer 45949 90738 13506 0 3 0x4000082 thrsleep syz-fuzzer 45949 189230 13506 0 3 0x4000082 thrsleep syz-fuzzer 45949 290094 13506 0 3 0x4000082 thrsleep syz-fuzzer 45949 141466 13506 0 3 0x4000082 kqread syz-fuzzer 45949 280113 13506 0 3 0x4000082 thrsleep syz-fuzzer 45949 120378 13506 0 3 0x4000082 thrsleep syz-fuzzer 45949 290480 13506 0 3 0x4000082 thrsleep syz-fuzzer 13506 209011 54618 0 3 0x10008a sigsusp ksh 54618 310574 17459 0 3 0x92 select sshd 17459 80687 1 0 3 0x80 select sshd 23735 481240 8214 74 3 0x100092 bpf pflogd 8214 159724 1 0 3 0x80 netio pflogd 64617 210024 2776 73 3 0x100090 kqread syslogd 2776 54556 1 0 3 0x100082 netio syslogd 92550 282520 1 77 7 0x100090 dhclient 11465 416041 1 0 3 0x80 poll dhclient 38851 81159 0 0 3 0x14200 bored smr 76524 174415 0 0 3 0x14200 pgzero zerothread 8278 20822 0 0 3 0x14200 aiodoned aiodoned 2796 288642 0 0 3 0x14200 syncer update 40141 510870 0 0 3 0x14200 cleaner cleaner 66742 15468 0 0 3 0x14200 reaper reaper 23530 456717 0 0 3 0x14200 pgdaemon pagedaemon 70488 128034 0 0 3 0x14200 bored crynlk 22154 197721 0 0 3 0x14200 bored crypto 21681 270500 0 0 3 0x14200 bored viomb 23807 8510 0 0 3 0x40014200 acpi0 acpi0 10762 361807 0 0 3 0x40014200 idle1 42734 191608 0 0 3 0x14200 bored softnet 97016 229259 0 0 2 0x14200 systqmp 19529 103881 0 0 3 0x14200 bored systq 61044 216228 0 0 3 0x40014200 bored softclock 78363 34792 0 0 3 0x40014200 idle0 1 291803 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 9536 6454K 7138K 78643K 15816 0 pcb 13 8K 8K 78643K 246 0 rtable 86 3K 4K 78643K 602 0 ifaddr 69 13K 14K 78643K 128 0 sysctl 1 1K 1K 78643K 1 0 counters 44 34K 34K 78643K 58 0 ioctlops 0 0K 4K 78643K 1654 0 iov 0 0K 16K 78643K 124 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 3217 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 76 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 275 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 5648 0 sigio 0 0K 0K 78643K 5 0 proc 62 63K 95K 78643K 884 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 253 0 in_multi 22 1K 2K 78643K 258 0 ether_multi 1 0K 0K 78643K 41 0 mrt 0 0K 0K 78643K 35 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 495 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 227 242K 242K 78643K 13810 0 UVM aobj 53 7K 7K 78643K 61 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 191 0 NDP 13 0K 0K 78643K 43 0 temp 140 3987K 4053K 78643K 33755 0 kqueue 3 4K 12K 78643K 161 0 SYN cache 2 1208K 1216K 78643K 3 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 23 0 19 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 124 0 122 1 0 1 1 0 8 0 rtentry 112 134 0 101 2 0 2 2 0 8 0 unpcb 120 1293 0 1279 2 1 1 2 0 8 0 syncache 296 62 0 62 5 5 0 1 0 8 0 tcpqe 32 82 0 82 6 6 0 1 0 8 0 tcpcb 736 733 0 718 18 15 3 5 0 8 0 inpcb 304 1730 0 1714 7 5 2 2 0 8 0 rttmr 72 10 0 10 1 1 0 1 0 8 0 nd6 48 28 0 25 1 0 1 1 0 8 0 pkpcb 40 12 0 12 1 0 1 1 0 8 1 kcovpl 48 5 0 4 1 0 1 1 0 8 0 pffrent 40 5 0 5 1 1 0 1 0 8 0 pfosfp 40 1468 0 1016 5 0 5 5 0 8 0 pfosfpen 112 1468 0 714 22 0 22 22 0 8 0 pfstitem 24 59 0 56 1 0 1 1 0 8 0 pfstkey 112 59 0 56 1 0 1 1 0 8 0 pfstate 320 59 0 56 3 1 2 2 0 8 0 pfrule 1360 31 0 26 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 338 0 151 13 1 12 13 0 8 0 art_table 32 339 0 151 2 0 2 2 0 8 0 art_node 16 133 0 96 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 2 1 0 1 1 0 8 0 semapl 112 273 0 263 1 0 1 1 0 8 0 shmpl 112 58 0 8 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8303 0 6895 89 0 89 89 0 8 0 ffsino 272 8303 0 6895 95 0 95 95 0 8 0 nchpl 144 14745 0 13153 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 35082 0 35082 3 2 1 1 0 8 1 percpumem 16 40 0 7 1 0 1 1 0 8 0 vcpupl 1984 18 0 0 3 0 3 3 0 8 0 vmpool 560 34 0 16 2 0 2 2 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 45271 0 45271 14 13 1 8 0 8 1 plimitpl 152 49 0 41 1 0 1 1 0 8 0 sigapl 424 5857 0 5824 4 0 4 4 0 8 0 futexpl 56 35896 0 35896 3 2 1 1 0 8 1 knotepl 112 246 0 228 1 0 1 1 0 8 0 kqueuepl 168 2973 0 2970 1 0 1 1 0 8 0 pipepl 336 300 0 290 7 5 2 3 0 8 0 fdescpl 496 5840 0 5824 3 0 3 3 0 8 0 filepl 152 17657 0 17564 8 3 5 7 0 8 0 lockfpl 104 525 0 524 1 0 1 1 0 8 0 lockfspl 48 215 0 214 1 0 1 1 0 8 0 sessionpl 144 22 0 11 1 0 1 1 0 8 0 pgrppl 48 31 0 20 1 0 1 1 0 8 0 ucredpl 96 1559 0 1550 1 0 1 1 0 8 0 zombiepl 144 5825 0 5824 1 0 1 1 0 8 0 processpl 1080 5857 0 5824 3 0 3 3 0 8 0 procpl 672 12564 0 12523 5 1 4 5 0 8 0 srpgc 96 4 0 4 1 1 0 1 0 8 0 sosppl 168 58 0 53 4 3 1 1 0 8 0 sockpl 432 3175 0 3143 8 3 5 5 0 8 0 mcl64k 65536 16 0 0 2 0 2 2 0 8 0 mcl16k 16384 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 0 8 0 mcl8k 8192 13 0 0 2 0 2 2 0 8 0 mcl4k 4096 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 297 0 0 16 0 16 16 0 8 0 mtagpl 96 230 0 0 5 0 5 5 0 8 0 mbufpl 256 724 0 0 35 0 35 35 0 8 0 bufpl 280 12001 0 5752 447 0 447 447 0 8 0 anonpl 24 418872 0 411770 88 42 46 61 0 186 0 amapchunkpl 152 24034 0 23846 25 17 8 20 0 158 0 amappl16 200 18487 0 18219 45 29 16 22 0 8 1 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl14 184 2579 0 2576 1 0 1 1 0 8 0 amappl13 176 57 0 54 1 0 1 1 0 8 0 amappl12 168 3 0 1 2 1 1 1 0 8 0 amappl11 160 1410 0 1392 1 0 1 1 0 8 0 amappl10 152 1712 0 1704 1 0 1 1 0 8 0 amappl9 144 19 0 18 2 1 1 1 0 8 0 amappl8 136 283 0 199 4 0 4 4 0 8 0 amappl7 128 284 0 275 1 0 1 1 0 8 0 amappl6 120 1769 0 1750 1 0 1 1 0 8 0 amappl5 112 5145 0 5123 1 0 1 1 0 8 0 amappl4 104 3072 0 3041 1 0 1 1 0 8 0 amappl3 96 398 0 390 1 0 1 1 0 8 0 amappl2 88 48292 0 48201 4 1 3 3 0 8 0 amappl1 80 165622 0 165134 30 18 12 21 0 8 1 amappl 88 12972 0 12876 3 0 3 3 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 60 0 8 1 0 1 1 0 8 0 uaddrrnd 24 5874 0 5840 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5874 0 5840 1 0 1 1 0 8 0 vmmpekpl 168 27343 0 27312 2 0 2 2 0 8 0 vmmpepl 168 725236 0 723605 124 46 78 82 0 357 2 vmsppl 368 5873 0 5840 4 0 4 4 0 8 0 rwobjpl 56 150977 0 149899 34 18 16 19 0 8 0 pdppl 4096 11755 0 11698 80 21 59 61 0 8 2 pvpl 32 2158891 0 2148653 197 106 91 117 0 265 3 pmappl 232 5873 0 5840 5 2 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 378 0 47 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(ffffffff82759ff0) 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(ffffffff828fd840) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828fd840) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828fd840,2) 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(ffff8000211ffcd8,1) at sleep_finish+0x111 sys/kern/kern_synch.c:427 sleep_finish_all(ffff8000211ffcd8,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:457 [inline] sleep_finish_all(ffff8000211ffcd8,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:402 tsleep(ffffffff82923874,118,ffffffff824266d4,416ba9) at tsleep+0x1f2 sys/kern/kern_synch.c:163 doppoll(ffff8000211c3ce8,7f7fffff7fc0,3,ffff8000211ffe68,0,ffff8000211fff20) at doppoll+0x577 sys_poll(ffff8000211c3ce8,ffff8000211ffed0,ffff8000211fff20) at sys_poll+0xa7 syscall(ffff8000211fffa0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211fffa0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff7fa0, 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(ffffffff828f6958,ffff800000add700) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b49880) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b49880) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b15000,ffff800000b49880) at if_delgroup+0x193 sys/net/if.c:2700 if_detach(ffff800000b15000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b15000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000234c1040) 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(ffff8000234c1110) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806eddf788,7,fffffd807f7b7a80,ffff800021272540) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806cb68d20,ffff800021272540) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806cb68d20,ffff800021272540) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806cb68d20,ffff800021272540) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806cb68d20,ffff800021272540) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021272540) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800021272540,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff800021272540,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff800021272540,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff800021272540) at userret+0x189 sys/kern/kern_sig.c:1914 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffddb30, count: -17