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(ffffffff829032c0,ffff800000b7a700) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b1dd80) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b1dd80) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae5000,ffff800000b1dd80) at if_delgroup+0x193 sys/net/if.c:2700 if_detach(ffff800000ae5000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000ae5000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff800022ae5ab0) 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(ffff800022ae5b80) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2826a8,7,fffffd807f7b7780,ffff80002123da40) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806a5f8d28,ffff80002123da40) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a5f8d28,ffff80002123da40) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806a5f8d28,ffff80002123da40) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806a5f8d28,ffff80002123da40) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123da40) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123da40,0,0,1) at exit1+0x335 sys/kern/kern_exit.c:200 sys_exit(ffff80002123da40,ffff800022ae5e10,ffff800022ae5e60) at sys_exit+0x16 sys/kern/kern_exit.c:96 syscall(ffff800022ae5ee0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022ae5ee0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7360, count: -17 ddb{1}> show registers rdi 0xffffffff829032c0 pfi_ifs rsi 0xffff800000b7a700 rbp 0xffff800022ae5910 rbx 0xdead4110dead4110 rdx 0 rcx 0xffff800000b1dc00 rax 0xffff800000b7a710 r8 0xf8 r9 0x8080808080808080 r10 0x9331dbb05259e2cd r11 0xefff4f8b74f13c75 r12 0xdead4110dead4110 r13 0xffff80000002a520 r14 0xffff800000b7a700 r15 0xffffffff829032c0 pfi_ifs rip 0xffffffff81c83050 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff800022ae58b0 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> show proc PROC (syz-executor.1) pid=309844 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002123d260,0xffffffff828c9fd0 process=0xffff800021235960 user=0xffff800022ae0000, vmspace=0xfffffd80672de468 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 69197 449624 0 0 3 0x14200 bored sosplice 42132 180713 53373 0 7 0x2 syz-executor.0 53373 11636 89037 0 3 0x82 thrsleep syz-fuzzer 53373 452395 89037 0 3 0x4000082 thrsleep syz-fuzzer 53373 7388 89037 0 3 0x4000082 thrsleep syz-fuzzer 53373 257390 89037 0 3 0x4000082 thrsleep syz-fuzzer 53373 83341 89037 0 3 0x4000082 thrsleep syz-fuzzer 53373 82295 89037 0 3 0x4000082 thrsleep syz-fuzzer 53373 450049 89037 0 3 0x4000082 thrsleep syz-fuzzer 53373 61091 89037 0 3 0x4000082 kqread syz-fuzzer 89037 331329 14181 0 3 0x10008a sigsusp ksh 14181 106452 27240 0 3 0x92 select sshd 44378 84134 1 0 3 0x100083 ttyin getty 27240 38049 1 0 3 0x80 select sshd 2147 351468 4472 74 3 0x100092 bpf pflogd 4472 438034 1 0 3 0x80 netio pflogd 50048 422506 12303 73 3 0x100090 kqread syslogd 12303 261509 1 0 3 0x100082 netio syslogd 57162 135236 1 77 2 0x100090 dhclient 72700 266667 1 0 3 0x80 poll dhclient 90300 238895 0 0 3 0x14200 bored smr 68568 182392 0 0 3 0x14200 pgzero zerothread 81649 47451 0 0 3 0x14200 aiodoned aiodoned 68641 433224 0 0 3 0x14200 syncer update 92449 331659 0 0 3 0x14200 cleaner cleaner 21247 197163 0 0 3 0x14200 reaper reaper 84396 89236 0 0 3 0x14200 pgdaemon pagedaemon 96108 97946 0 0 3 0x14200 bored crynlk 41889 287509 0 0 3 0x14200 bored crypto 90174 73724 0 0 3 0x14200 bored viomb 16460 465225 0 0 3 0x40014200 acpi0 acpi0 86708 501160 0 0 3 0x40014200 idle1 63232 462230 0 0 3 0x14200 bored softnet 84423 150776 0 0 2 0x14200 systqmp 74589 156650 0 0 3 0x14200 bored systq 94473 411715 0 0 3 0x40014200 bored softclock 18996 470823 0 0 3 0x40014200 idle0 1 13189 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 9531 6444K 7410K 78643K 15422 0 pcb 13 8K 8K 78643K 315 0 rtable 70 2K 5K 78643K 555 0 ifaddr 66 13K 14K 78643K 205 0 sysctl 2 0K 0K 78643K 9 0 counters 44 34K 34K 78643K 104 0 ioctlops 0 0K 4K 78643K 1583 0 iov 0 0K 24K 78643K 165 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 76K 77K 78643K 2988 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 51 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 368 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 5485 0 sigio 0 0K 0K 78643K 20 0 proc 62 63K 95K 78643K 831 0 subproc 23 1K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 262 0 in_multi 22 1K 2K 78643K 251 0 ether_multi 1 0K 0K 78643K 93 0 mrt 0 0K 0K 78643K 26 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 439 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 228 402K 402K 78643K 13317 0 UVM aobj 118 3K 3K 78643K 195 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 327 0 NDP 12 0K 0K 78643K 46 0 temp 136 3985K 4064K 78643K 24058 0 kqueue 3 4K 12K 78643K 213 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 6 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 151 0 149 1 0 1 1 0 8 0 rtentry 112 53 0 28 2 0 2 2 0 8 0 unpcb 120 1085 0 1075 2 1 1 2 0 8 0 syncache 296 36 0 36 5 5 0 1 0 8 0 tcpqe 32 24 0 24 3 3 0 1 0 8 0 tcpcb 736 702 0 694 15 14 1 4 0 8 0 inpcb 304 2167 0 2160 8 7 1 2 0 8 0 rttmr 72 7 0 7 1 1 0 1 0 8 0 nd6 48 6 0 3 1 0 1 1 0 8 0 pkpcb 40 20 0 20 4 4 0 1 0 8 0 kcovpl 48 2 0 1 1 0 1 1 0 8 0 ppxss 1128 18 0 18 3 3 0 1 0 8 0 pffrag 232 12 0 12 2 2 0 1 0 482 0 pffrnode 88 12 0 12 2 2 0 1 0 8 0 pffrent 40 24 0 24 2 2 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 12 0 12 1 0 1 1 0 8 1 pfstitem 24 46 0 44 1 0 1 1 0 8 0 pfstkey 112 46 0 44 1 0 1 1 0 8 0 pfstate 320 46 0 44 4 3 1 3 0 8 0 pfrule 1360 58 0 42 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 220 0 41 13 1 12 12 0 8 0 art_table 32 221 0 41 2 0 2 2 0 8 0 art_node 16 52 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 0 1 0 1 1 0 8 0 semapl 112 361 0 351 1 0 1 1 0 8 0 shmpl 112 192 0 77 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8491 0 7095 88 0 88 88 0 8 0 ffsino 272 8491 0 7095 94 0 94 94 0 8 0 nchpl 144 14945 0 13359 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 35787 0 35787 1 0 1 1 0 8 1 percpumem 16 63 0 30 1 0 1 1 0 8 0 vcpupl 1984 23 0 0 3 0 3 3 0 8 0 vmpool 560 23 0 0 2 0 2 2 0 8 0 pfiaddrpl 120 4 0 4 1 0 1 1 0 8 1 scsiplug 72 7 0 7 1 1 0 1 0 8 0 scxspl 216 44419 0 44419 17 16 1 8 0 8 1 plimitpl 152 112 0 104 1 0 1 1 0 8 0 sigapl 424 5702 0 5670 4 0 4 4 0 8 0 futexpl 56 36976 0 36976 1 0 1 1 0 8 1 knotepl 112 292 0 278 1 0 1 1 0 8 0 kqueuepl 168 2578 0 2568 1 0 1 1 0 8 0 pipepl 336 281 0 273 11 9 2 2 0 8 1 fdescpl 496 5685 0 5670 3 0 3 3 0 8 0 filepl 152 17545 0 17458 7 2 5 6 0 8 1 lockfpl 104 557 0 556 1 0 1 1 0 8 0 lockfspl 48 207 0 206 1 0 1 1 0 8 0 sessionpl 144 18 0 7 1 0 1 1 0 8 0 pgrppl 48 44 0 33 1 0 1 1 0 8 0 ucredpl 96 1770 0 1761 1 0 1 1 0 8 0 zombiepl 144 5671 0 5669 1 0 1 1 0 8 0 processpl 1080 5702 0 5669 3 0 3 3 0 8 0 procpl 672 12325 0 12285 4 0 4 4 0 8 0 sosppl 168 22 0 22 2 2 0 1 0 8 0 sockpl 432 3438 0 3418 12 9 3 6 0 8 0 mcl64k 65536 30 0 0 3 0 3 3 0 8 0 mcl16k 16384 20 0 0 3 1 2 3 0 8 0 mcl12k 12288 10 0 0 1 0 1 1 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 258 0 0 16 0 16 16 0 8 0 mtagpl 96 395 0 0 10 0 10 10 0 8 0 mbufpl 256 1097 0 0 60 0 60 60 0 8 0 bufpl 280 11346 0 5097 447 0 447 447 0 8 0 anonpl 24 389697 0 383637 73 30 43 59 0 186 0 amapchunkpl 152 23673 0 23471 34 26 8 21 0 158 0 amappl16 200 17100 0 16846 28 14 14 19 0 8 0 amappl15 192 2757 0 2755 1 0 1 1 0 8 0 amappl14 184 23 0 19 1 0 1 1 0 8 0 amappl13 176 47 0 46 1 0 1 1 0 8 0 amappl12 168 10 0 8 1 0 1 1 0 8 0 amappl11 160 2767 0 2749 2 1 1 2 0 8 0 amappl10 152 21 0 15 1 0 1 1 0 8 0 amappl9 144 287 0 286 1 0 1 1 0 8 0 amappl8 136 248 0 168 3 0 3 3 0 8 0 amappl7 128 246 0 235 1 0 1 1 0 8 0 amappl6 120 68 0 56 1 0 1 1 0 8 0 amappl5 112 8583 0 8563 1 0 1 1 0 8 0 amappl4 104 389 0 361 2 1 1 2 0 8 0 amappl3 96 188 0 181 1 0 1 1 0 8 0 amappl2 88 44649 0 44566 4 1 3 3 0 8 0 amappl1 80 164901 0 164435 30 19 11 21 0 8 0 amappl 88 12680 0 12589 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 64 194 0 77 2 0 2 2 0 8 0 uaddrrnd 24 5708 0 5670 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5708 0 5670 1 0 1 1 0 8 0 vmmpekpl 168 30269 0 30233 2 0 2 2 0 8 0 vmmpepl 168 706766 0 705252 105 29 76 79 0 357 1 vmsppl 368 5707 0 5670 4 0 4 4 0 8 0 rwobjpl 56 145776 0 144727 29 13 16 19 0 8 0 pdppl 4096 11423 0 11363 80 16 64 64 0 8 4 pvpl 32 1875415 0 1866415 190 102 88 117 0 265 5 pmappl 232 5707 0 5670 4 1 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 402 0 44 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82710ff0) 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+0x3e kd_curproc sys/dev/kcov.c:571 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x3e sys/dev/kcov.c:143 __mp_lock(ffffffff828bf3f8) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828bf3f8) at __mp_lock+0x133 sys/kern/kern_lock.c:147 syscall(ffff8000212a4f50) at syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff8000212a4f50) at syscall+0x3fd sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff4f20, 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(ffffffff829032c0,ffff800000b7a700) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b1dd80) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b1dd80) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae5000,ffff800000b1dd80) at if_delgroup+0x193 sys/net/if.c:2700 if_detach(ffff800000ae5000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000ae5000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff800022ae5ab0) 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(ffff800022ae5b80) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2826a8,7,fffffd807f7b7780,ffff80002123da40) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806a5f8d28,ffff80002123da40) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a5f8d28,ffff80002123da40) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806a5f8d28,ffff80002123da40) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806a5f8d28,ffff80002123da40) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123da40) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123da40,0,0,1) at exit1+0x335 sys/kern/kern_exit.c:200 sys_exit(ffff80002123da40,ffff800022ae5e10,ffff800022ae5e60) at sys_exit+0x16 sys/kern/kern_exit.c:96 syscall(ffff800022ae5ee0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022ae5ee0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7360, count: -17