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(ffffffff82908ad8,ffff800000b52c00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b1e280) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b1e280) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae4000,ffff800000b1e280) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000ae4000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000ae4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000212ab650) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d00,7) at tun_dev_close+0x140 sys/net/if_tun.c:479 spec_close(ffff8000212ab720) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed50248,7,fffffd807f7b7780,ffff800021279ce8) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd80675bba38,ffff800021279ce8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80675bba38,ffff800021279ce8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80675bba38,ffff800021279ce8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80675bba38,ffff800021279ce8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021279ce8) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800021279ce8,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff800021279ce8,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff800021279ce8,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff800021279ce8) at userret+0x189 sys/kern/kern_sig.c:1914 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffe1ae0, count: -17 ddb{1}> show registers rdi 0xffffffff82908ad8 pfi_ifs rsi 0xffff800000b52c00 rbp 0xffff8000212ab4b0 rbx 0xdead4110dead4110 rdx 0 rcx 0 rax 0xffff800000b52c10 r8 0xf8 r9 0x8080808080808080 r10 0xd5924132b0a56049 r11 0xda8314d3395fc00e r12 0xdead4110dead4110 r13 0xffff800000afaf20 r14 0xffff800000b52c00 r15 0xffffffff82908ad8 pfi_ifs rip 0xffffffff8149d7f0 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000212ab450 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> show proc PROC (syz-executor.0) pid=522499 stat=onproc flags process=a proc=2000 pri=32, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff8000211c27e8,0xffff800021278a98 process=0xffff8000212350f0 user=0xffff8000212a6000, vmspace=0xfffffd8008496b80 estcpu=36, cpticks=1, pctcpu=0.30 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 62081 490401 31366 0 7 0x2 syz-executor.1 27853 377105 0 0 3 0x14200 bored sosplice 31366 100307 86969 0 3 0x82 thrsleep syz-fuzzer 31366 494187 86969 0 3 0x4000082 thrsleep syz-fuzzer 31366 479734 86969 0 3 0x4000082 thrsleep syz-fuzzer 31366 354254 86969 0 3 0x4000082 thrsleep syz-fuzzer 31366 140904 86969 0 3 0x4000082 kqread syz-fuzzer 31366 216774 86969 0 3 0x4000082 thrsleep syz-fuzzer 31366 494338 86969 0 3 0x4000082 thrsleep syz-fuzzer 31366 522898 86969 0 3 0x4000082 thrsleep syz-fuzzer 86969 263647 47712 0 3 0x10008a sigsusp ksh 47712 283029 94824 0 3 0x92 select sshd 22101 501094 1 0 3 0x100083 ttyin getty 94824 287714 1 0 3 0x80 select sshd 7549 138310 20414 74 3 0x100092 bpf pflogd 20414 36700 1 0 3 0x80 netio pflogd 40540 148677 87856 73 3 0x100090 kqread syslogd 87856 461186 1 0 3 0x100082 netio syslogd 65197 113068 1 77 2 0x100090 dhclient 4189 82151 1 0 3 0x80 poll dhclient 48421 314119 0 0 3 0x14200 bored smr 44016 12999 0 0 3 0x14200 pgzero zerothread 20402 157033 0 0 3 0x14200 aiodoned aiodoned 43290 493830 0 0 3 0x14200 syncer update 73945 359783 0 0 3 0x14200 cleaner cleaner 8050 473848 0 0 3 0x14200 reaper reaper 84921 274520 0 0 3 0x14200 pgdaemon pagedaemon 2178 490049 0 0 3 0x14200 bored crynlk 5219 16619 0 0 3 0x14200 bored crypto 68248 84343 0 0 3 0x14200 bored viomb 43885 203715 0 0 3 0x40014200 acpi0 acpi0 34370 244503 0 0 3 0x40014200 idle1 99136 30861 0 0 3 0x14200 bored softnet 10958 269958 0 0 2 0x14200 systqmp 99296 235266 0 0 3 0x14200 bored systq 29353 3851 0 0 3 0x40014200 bored softclock 8663 406822 0 0 3 0x40014200 idle0 1 73552 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 9543 6448K 6821K 78643K 12034 0 pcb 13 8K 8K 78643K 65 0 rtable 86 3K 3K 78643K 324 0 ifaddr 73 13K 14K 78643K 103 0 sysctl 2 0K 0K 78643K 2 0 counters 44 34K 34K 78643K 52 0 ioctlops 0 0K 4K 78643K 1505 0 iov 0 0K 16K 78643K 40 0 mount 1 1K 1K 78643K 1 0 vnodes 1213 76K 77K 78643K 1733 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 77 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 1671 0 sigio 0 0K 0K 78643K 4 0 proc 62 63K 95K 78643K 562 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 69 0 in_multi 22 1K 2K 78643K 79 0 ether_multi 1 0K 0K 78643K 9 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 55 254K 254K 78643K 55 0 exec 0 0K 2K 78643K 431 0 pfkey data 0 0K 0K 78643K 3 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 186 63K 63K 78643K 4898 0 UVM aobj 9 2K 2K 78643K 9 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 47 0 NDP 14 0K 0K 78643K 25 0 temp 138 3982K 4049K 78643K 11139 0 kqueue 3 4K 12K 78643K 55 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 8 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 61 0 59 1 0 1 1 0 8 0 rtentry 112 62 0 29 2 0 2 2 0 8 0 unpcb 120 334 0 322 1 0 1 1 0 8 0 syncache 296 22 0 22 3 3 0 1 0 8 0 tcpqe 32 958 0 958 2 2 0 1 0 8 0 tcpcb 736 204 0 198 5 3 2 3 0 8 1 inpcb 296 475 0 468 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 11 0 8 1 0 1 1 0 8 0 pkpcb 40 12 0 12 4 4 0 1 0 8 0 kcovpl 48 3 0 2 1 0 1 1 0 8 0 ppxss 1128 2 0 2 1 1 0 1 0 8 0 pffrag 232 4 0 2 1 0 1 1 0 482 0 pffrnode 88 4 0 2 1 0 1 1 0 8 0 pffrent 40 7 0 5 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 23 0 20 1 0 1 1 0 8 0 pfstkey 112 23 0 20 1 0 1 1 0 8 0 pfstate 328 23 0 20 2 0 2 2 0 8 0 pfrule 1360 38 0 32 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 273 0 98 12 1 11 12 0 8 0 art_table 32 274 0 98 2 0 2 2 0 8 0 art_node 16 61 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 1 2 1 1 1 0 8 0 semupl 112 9 0 9 1 1 0 1 0 8 0 semapl 112 56 0 46 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3304 0 1906 88 0 88 88 0 8 0 ffsino 272 3304 0 1906 95 1 94 94 0 8 0 nchpl 144 5286 0 3700 60 0 60 60 0 8 0 uvmvnodes 72 3754 0 0 69 0 69 69 0 8 0 vnodes 224 3754 0 0 221 0 221 221 0 8 0 namei 1024 13279 0 13279 2 1 1 1 0 8 1 percpumem 16 37 0 4 1 0 1 1 0 8 0 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 0 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 15818 0 15818 9 8 1 8 0 8 1 plimitpl 152 77 0 69 1 0 1 1 0 8 0 sigapl 424 1885 0 1853 4 0 4 4 0 8 0 futexpl 56 10622 0 10622 1 0 1 1 0 8 1 knotepl 112 143 0 125 1 0 1 1 0 8 0 kqueuepl 168 1272 0 1268 1 0 1 1 0 8 0 pipepl 336 125 0 115 3 2 1 2 0 8 0 fdescpl 496 1868 0 1853 3 0 3 3 0 8 0 filepl 152 6296 0 6205 6 1 5 5 0 8 1 lockfpl 104 135 0 134 1 0 1 1 0 8 0 lockfspl 48 51 0 50 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 96 618 0 609 1 0 1 1 0 8 0 zombiepl 144 1854 0 1851 2 1 1 1 0 8 0 processpl 1080 1885 0 1851 3 0 3 3 0 8 0 procpl 672 4174 0 4133 5 1 4 4 0 8 0 sosppl 168 13 0 13 1 1 0 1 0 8 0 sockpl 432 882 0 856 7 3 4 5 0 8 0 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 301 0 0 37 0 37 37 0 8 0 mtagpl 96 84 0 0 3 0 3 3 0 8 0 mbufpl 256 427 0 0 24 0 24 24 0 8 0 bufpl 280 5255 0 185 363 0 363 363 0 8 0 anonpl 24 171015 0 155266 162 11 151 157 0 186 32 amapchunkpl 152 9385 0 8989 34 14 20 29 0 158 3 amappl16 200 6674 0 5894 67 17 50 64 0 8 8 amappl15 192 815 0 813 1 0 1 1 0 8 0 amappl14 184 27 0 22 1 0 1 1 0 8 0 amappl13 176 85 0 80 1 0 1 1 0 8 0 amappl12 168 4 0 3 2 1 1 1 0 8 0 amappl11 160 66 0 48 2 0 2 2 0 8 0 amappl10 152 19 0 14 1 0 1 1 0 8 0 amappl9 144 290 0 289 2 1 1 1 0 8 0 amappl8 136 1777 0 1708 3 0 3 3 0 8 0 amappl7 128 258 0 251 1 0 1 1 0 8 0 amappl6 120 71 0 58 1 0 1 1 0 8 0 amappl5 112 2014 0 1995 1 0 1 1 0 8 0 amappl4 104 290 0 263 1 0 1 1 0 8 0 amappl3 96 190 0 183 1 0 1 1 0 8 0 amappl2 88 14093 0 14029 3 1 2 3 0 8 0 amappl1 80 64499 0 64048 29 18 11 21 0 8 0 amappl 88 4501 0 4406 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 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1872 0 1853 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1872 0 1853 1 0 1 1 0 8 0 vmmpekpl 168 12230 0 12203 2 0 2 2 0 8 0 vmmpepl 168 245264 0 243312 157 33 124 124 0 357 26 vmsppl 368 1871 0 1853 2 0 2 2 0 8 0 rwobjpl 56 55922 0 54400 37 12 25 29 0 8 2 pdppl 4096 3751 0 3710 69 24 45 46 0 8 4 pvpl 32 855663 0 837095 263 20 243 249 0 265 60 pmappl 232 1871 0 1853 3 1 2 2 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 351 0 35 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 __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(ffffffff828be420) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828be420) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff800021eb9c20) at syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800021eb9c20) at syscall+0x3fd sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe73a0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> trace pfi_ifhead_RB_REMOVE(ffffffff82908ad8,ffff800000b52c00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b1e280) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b1e280) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae4000,ffff800000b1e280) at if_delgroup+0x193 sys/net/if.c:2711 if_detach(ffff800000ae4000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000ae4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000212ab650) at if_clone_destroy+0x136 sys/net/if.c:1212 tun_dev_close(5d00,7) at tun_dev_close+0x140 sys/net/if_tun.c:479 spec_close(ffff8000212ab720) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806ed50248,7,fffffd807f7b7780,ffff800021279ce8) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd80675bba38,ffff800021279ce8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80675bba38,ffff800021279ce8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80675bba38,ffff800021279ce8) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80675bba38,ffff800021279ce8) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800021279ce8) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800021279ce8,0,19,1) at exit1+0x335 sys/kern/kern_exit.c:200 postsig(ffff800021279ce8,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff800021279ce8,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff800021279ce8) at userret+0x189 sys/kern/kern_sig.c:1914 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7ffffe1ae0, count: -17