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(ffffffff82913590,ffff800000b4bf00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af5200) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af5200) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae4000,ffff800000af5200) at if_delgroup+0x193 sys/net/if.c:2676 if_detach(ffff800000ae4000) at if_detach+0x1ab sys/net/if.c:1039 tun_clone_destroy(ffff800000ae4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000226cd270) at if_clone_destroy+0x146 sys/net/if.c:1198 tun_dev_close(5d01,7) at tun_dev_close+0x140 sys/net/if_tun.c:476 spec_close(ffff8000226cd340) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2eb088,7,fffffd807f7b77e0,ffff80002123dce0) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806917fe58,ffff80002123dce0) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806917fe58,ffff80002123dce0) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806917fe58,ffff80002123dce0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806917fe58,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(ffff8000226cd7c0) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000226cd7c0) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8dd0, count: -18 ddb{1}> show registers rdi 0xffffffff82913590 pfi_ifs rsi 0xffff800000b4bf00 rbp 0xffff8000226cd0d0 rbx 0xdeaf4152deaf4152 rdx 0 rcx 0xffff800000af5c00 rax 0xffff800000b4bf10 r8 0xf8 r9 0x8080808080808080 r10 0x8854cce19f6ca1ea r11 0xa7d0eec0fd8e2f00 r12 0xdeaf4152deaf4152 r13 0xffff800000afaee0 r14 0xffff800000b4bf00 r15 0xffffffff82913590 pfi_ifs rip 0xffffffff81a7b3f0 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff8000226cd070 ss 0 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> show proc PROC (syz-executor.1) pid=132641 stat=onproc flags process=a proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000211c2548,0xffff80002123da50 process=0xffff800021234448 user=0xffff8000226c8000, vmspace=0xfffffd80084922e0 estcpu=36, cpticks=6, pctcpu=0.48 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 96618 144115 76228 0 7 0 syz-executor.0 54925 169509 0 0 3 0x14200 bored sosplice 76228 516262 26703 0 3 0x82 nanoslp syz-executor.0 26703 351040 69941 0 3 0x82 thrsleep syz-fuzzer 26703 205474 69941 0 3 0x4000082 nanoslp syz-fuzzer 26703 289249 69941 0 3 0x4000082 nanoslp syz-fuzzer 26703 112067 69941 0 3 0x4000082 thrsleep syz-fuzzer 26703 474395 69941 0 3 0x4000082 thrsleep syz-fuzzer 26703 462638 69941 0 3 0x4000082 thrsleep syz-fuzzer 26703 50956 69941 0 3 0x4000082 thrsleep syz-fuzzer 26703 195928 69941 0 3 0x4000082 kqread syz-fuzzer 69941 346273 74976 0 3 0x10008a sigsusp ksh 74976 255878 73275 0 3 0x92 select sshd 296 84588 1 0 3 0x100083 ttyin getty 73275 146777 1 0 3 0x80 select sshd 32952 230713 84507 74 3 0x100092 bpf pflogd 84507 23272 1 0 3 0x80 netio pflogd 53910 477109 56114 73 3 0x100090 kqread syslogd 56114 150556 1 0 3 0x100082 netio syslogd 11175 316197 1 77 2 0x100090 dhclient 56755 460545 1 0 3 0x80 poll dhclient 22209 2227 0 0 3 0x14200 bored smr 86341 441566 0 0 3 0x14200 pgzero zerothread 23926 519334 0 0 3 0x14200 aiodoned aiodoned 35014 245415 0 0 3 0x14200 syncer update 32168 2853 0 0 3 0x14200 cleaner cleaner 73417 167306 0 0 3 0x14200 reaper reaper 57008 400214 0 0 3 0x14200 pgdaemon pagedaemon 8052 332293 0 0 3 0x14200 bored crynlk 4621 186646 0 0 3 0x14200 bored crypto 21206 484472 0 0 3 0x14200 bored viomb 5654 388009 0 0 3 0x40014200 acpi0 acpi0 31864 122160 0 0 3 0x40014200 idle1 61866 383931 0 0 3 0x14200 bored softnet 55114 38334 0 0 2 0x14200 systqmp 78481 408246 0 0 3 0x14200 bored systq 26653 370863 0 0 3 0x40014200 bored softclock 62870 176371 0 0 3 0x40014200 idle0 1 388666 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 9529 6435K 7579K 78643K 16911 0 pcb 13 8K 8K 78643K 251 0 rtable 92 4K 5K 78643K 658 0 ifaddr 68 14K 15K 78643K 198 0 counters 44 34K 34K 78643K 90 0 ioctlops 0 0K 4K 78643K 1653 0 iov 0 0K 12K 78643K 160 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 3469 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 416 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 5399 0 sigio 0 0K 0K 78643K 4 0 proc 62 63K 95K 78643K 678 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 314 0 in_multi 22 1K 2K 78643K 205 0 ether_multi 1 0K 0K 78643K 58 0 mrt 0 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 2K 78643K 618 0 pfkey data 0 0K 0K 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 204 351K 355K 78643K 13222 0 UVM aobj 15 2K 2K 78643K 28 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 267 0 NDP 12 0K 0K 78643K 47 0 temp 138 3985K 4113K 78643K 42051 0 kqueue 3 4K 22K 78643K 277 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 120 304 0 302 1 0 1 1 0 8 0 rtentry 112 93 0 60 2 0 2 2 0 8 0 unpcb 120 1404 0 1394 2 1 1 2 0 8 0 syncache 296 52 0 52 5 5 0 1 0 8 0 tcpqe 32 16 0 16 3 3 0 1 0 8 0 tcpcb 736 812 0 806 22 18 4 8 0 8 2 inpcb 296 2297 0 2288 7 5 2 2 0 8 0 rttmr 72 5 0 5 1 1 0 1 0 8 0 nd6 48 16 0 13 1 0 1 1 0 8 0 pkpcb 40 13 0 13 2 2 0 1 0 8 0 kcovpl 48 4 0 3 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 pfrktable 1344 2 0 0 1 0 1 1 0 8 0 pfstitem 24 134 0 118 1 0 1 1 0 8 0 pfstkey 112 150 0 134 3 1 2 2 0 8 0 pfstate 328 142 0 126 9 7 2 6 0 8 0 pfrule 1360 61 0 37 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 307 0 116 14 2 12 14 0 8 0 art_table 32 308 0 116 2 0 2 2 0 8 0 art_node 16 75 0 35 1 0 1 1 0 8 0 sysvmsgpl 40 51 0 16 1 0 1 1 0 8 0 semupl 112 9 0 9 1 1 0 1 0 8 0 semapl 112 414 0 404 1 0 1 1 0 8 0 shmpl 112 25 0 13 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8335 0 6928 89 0 89 89 0 8 0 ffsino 272 8335 0 6928 95 0 95 95 0 8 0 nchpl 144 14964 0 13370 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 36625 0 36625 1 0 1 1 0 8 1 percpumem 16 56 0 23 1 0 1 1 0 8 0 vcpupl 1984 27 0 0 4 0 4 4 0 8 0 vmpool 560 32 0 5 3 1 2 3 0 8 0 pfiaddrpl 120 19 0 0 1 0 1 1 0 8 0 scsiplug 72 17 0 17 2 2 0 1 0 8 0 scxspl 216 41384 0 41384 9 8 1 8 0 8 1 plimitpl 152 216 0 208 1 0 1 1 0 8 0 sigapl 424 5611 0 5578 4 0 4 4 0 8 0 futexpl 56 40594 0 40594 1 0 1 1 0 8 1 knotepl 112 787 0 769 2 1 1 2 0 8 0 kqueuepl 168 2506 0 2495 1 0 1 1 0 8 0 pipepl 336 338 0 328 6 4 2 2 0 8 0 fdescpl 496 5594 0 5578 3 0 3 3 0 8 0 filepl 152 19642 0 19551 6 1 5 6 0 8 1 lockfpl 104 644 0 643 1 0 1 1 0 8 0 lockfspl 48 204 0 203 1 0 1 1 0 8 0 sessionpl 144 20 0 9 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 2657 0 2648 1 0 1 1 0 8 0 zombiepl 144 5579 0 5578 1 0 1 1 0 8 0 processpl 1080 5611 0 5578 3 0 3 3 0 8 0 procpl 672 12150 0 12110 5 1 4 5 0 8 0 sosppl 168 10 0 10 1 1 0 1 0 8 0 sockpl 432 4033 0 4012 9 5 4 6 0 8 1 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 22 0 0 3 1 2 3 0 8 0 mcl2k 2048 212 0 0 15 0 15 15 0 8 0 mtagpl 96 473 0 0 12 0 12 12 0 8 0 mbufpl 256 1145 0 0 71 0 71 71 0 8 0 bufpl 280 9585 0 3336 447 0 447 447 0 8 0 anonpl 16 377079 0 371344 32 7 25 27 0 124 0 amapchunkpl 152 26631 0 26476 37 30 7 27 0 158 0 amappl16 192 16374 0 16149 18 5 13 14 0 8 1 amappl15 184 909 0 907 2 1 1 1 0 8 0 amappl14 176 26 0 22 1 0 1 1 0 8 0 amappl13 168 2685 0 2682 1 0 1 1 0 8 0 amappl12 160 4 0 3 2 1 1 1 0 8 0 amappl11 152 1919 0 1902 1 0 1 1 0 8 0 amappl10 144 30 0 23 1 0 1 1 0 8 0 amappl9 136 285 0 284 1 0 1 1 0 8 0 amappl8 128 279 0 199 3 0 3 3 0 8 0 amappl7 120 271 0 260 1 0 1 1 0 8 0 amappl6 112 80 0 68 1 0 1 1 0 8 0 amappl5 104 7666 0 7648 1 0 1 1 0 8 0 amappl4 96 313 0 271 2 0 2 2 0 8 0 amappl3 88 2925 0 2918 1 0 1 1 0 8 0 amappl2 80 43975 0 43906 3 1 2 3 0 8 0 amappl1 72 162121 0 161666 27 17 10 19 0 8 0 amappl 80 12514 0 12445 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 27 0 13 1 0 1 1 0 8 0 uaddrrnd 24 5626 0 5583 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5626 0 5583 1 0 1 1 0 8 0 vmmpekpl 168 27479 0 27443 2 0 2 2 0 8 0 vmmpepl 168 698087 0 696575 98 24 74 77 0 357 2 vmsppl 368 5625 0 5583 5 1 4 5 0 8 0 pdppl 4096 11259 0 11193 85 17 68 70 0 8 2 pvpl 32 2058806 0 2050032 154 74 80 117 0 265 4 pmappl 232 5625 0 5583 4 1 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 423 0 46 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(ffffffff826d5ff0) 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(ffffffff828c3f40) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828c3f40) at __mp_lock+0x122 sys/kern/kern_lock.c:147 upageflttrap(ffff8000212185f0,89a6b3b676f) at upageflttrap+0x77 sys/arch/amd64/amd64/trap.c:180 usertrap(ffff8000212185f0) at usertrap+0x21a sys/arch/amd64/amd64/trap.c:406 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff5880, 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(ffffffff82913590,ffff800000b4bf00) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000af5200) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000af5200) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000ae4000,ffff800000af5200) at if_delgroup+0x193 sys/net/if.c:2676 if_detach(ffff800000ae4000) at if_detach+0x1ab sys/net/if.c:1039 tun_clone_destroy(ffff800000ae4000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff8000226cd270) at if_clone_destroy+0x146 sys/net/if.c:1198 tun_dev_close(5d01,7) at tun_dev_close+0x140 sys/net/if_tun.c:476 spec_close(ffff8000226cd340) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e2eb088,7,fffffd807f7b77e0,ffff80002123dce0) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd806917fe58,ffff80002123dce0) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806917fe58,ffff80002123dce0) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd806917fe58,ffff80002123dce0) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd806917fe58,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(ffff8000226cd7c0) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000226cd7c0) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8dd0, count: -18