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(ffffffff82935fc0,ffff800000b3b200) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b37d80) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b37d80) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b3c000,ffff800000b37d80) at if_delgroup+0x1a3 sys/net/if.c:2705 if_detach(ffff800000b3c000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b3c000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff80002129f6d0) 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(ffff80002129f7a0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e305088,7,fffffd807f7b7660,ffff80002123d500) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd80694edad0,ffff80002123d500) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80694edad0,ffff80002123d500) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80694edad0,ffff80002123d500) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80694edad0,ffff80002123d500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123d500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123d500,0,19,1) at exit1+0x345 sys/kern/kern_exit.c:199 postsig(ffff80002123d500,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002123d500,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002123d500) at userret+0x189 sys/kern/kern_sig.c:1914 syscall(ffff80002129fc20) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80002129fc20) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffa4c0, count: -18 ddb{1}> show registers rdi 0xffffffff82935fc0 pfi_ifs rsi 0xffff800000b3b200 rbp 0xffff80002129f530 rbx 0xdeaf4152deaf4152 rdx 0 rcx 0xffff800000af4b00 rax 0xffff800000b3b210 r8 0xf8 r9 0x8080808080808080 r10 0x2f64e7a05370868d r11 0x68bb45a6ec4a245f r12 0xdeaf4152deaf4152 r13 0xffff800000b68980 r14 0xffff800000b3b200 r15 0xffffffff82935fc0 pfi_ifs rip 0xffffffff81e65800 pfi_ifhead_RB_REMOVE+0x50 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff80002129f4d0 ss 0x10 pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> show proc PROC (syz-executor.1) pid=456813 stat=onproc flags process=a proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002123da40,0xffff80002123c2b0 process=0xffff8000212361d0 user=0xffff80002129a000, vmspace=0xfffffd8066bbd2f0 estcpu=36, cpticks=6, pctcpu=1.4 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1238 71394 1 0 3 0x100083 ttyin getty 27343 123064 91975 0 3 0x82 piperd syz-executor.0 7707 152932 0 0 3 0x14200 bored sosplice 91975 412987 25362 0 3 0x82 thrsleep syz-fuzzer 91975 19228 25362 0 3 0x4000082 thrsleep syz-fuzzer 91975 113520 25362 0 3 0x4000082 thrsleep syz-fuzzer 91975 425120 25362 0 3 0x4000082 thrsleep syz-fuzzer 91975 333880 25362 0 3 0x4000082 kqread syz-fuzzer 91975 124983 25362 0 3 0x4000082 thrsleep syz-fuzzer 91975 388790 25362 0 3 0x4000082 thrsleep syz-fuzzer 91975 415163 25362 0 3 0x4000082 thrsleep syz-fuzzer 25362 150268 41218 0 3 0x10008a sigsusp ksh 41218 44173 15668 0 3 0x92 select sshd 15668 265105 1 0 3 0x80 select sshd 65679 358336 63075 74 3 0x100092 bpf pflogd 63075 121209 1 0 3 0x80 netio pflogd 3417 193298 36663 73 3 0x100090 kqread syslogd 36663 467259 1 0 3 0x100082 netio syslogd 35262 406892 1 77 7 0x100090 dhclient 82197 158961 1 0 3 0x80 poll dhclient 50161 247476 0 0 3 0x14200 bored smr 92213 316806 0 0 3 0x14200 pgzero zerothread 85396 178920 0 0 3 0x14200 aiodoned aiodoned 42368 383376 0 0 3 0x14200 syncer update 37026 255419 0 0 3 0x14200 cleaner cleaner 66396 151160 0 0 3 0x14200 reaper reaper 29520 52421 0 0 3 0x14200 pgdaemon pagedaemon 86929 386051 0 0 3 0x14200 bored crynlk 86580 379613 0 0 3 0x14200 bored crypto 13203 222990 0 0 3 0x14200 bored viomb 66775 284473 0 0 3 0x40014200 acpi0 acpi0 34948 153367 0 0 3 0x40014200 idle1 55649 173616 0 0 3 0x14200 bored softnet 36 289292 0 0 2 0x14200 systqmp 23769 473749 0 0 3 0x14200 bored systq 75828 141171 0 0 3 0x40014200 bored softclock 48774 378205 0 0 3 0x40014200 idle0 1 265291 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 9557 6458K 8008K 78643K 15020 0 pcb 13 8K 8K 78643K 197 0 rtable 81 3K 4K 78643K 608 0 ifaddr 80 14K 16K 78643K 244 0 sysctl 2 0K 0K 78643K 10 0 counters 44 34K 34K 78643K 112 0 ioctlops 0 0K 4K 78643K 1627 0 iov 0 0K 24K 78643K 183 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 2835 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 22 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 63 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 4 9K 25K 78643K 4865 0 sigio 0 0K 0K 78643K 46 0 proc 63 63K 95K 78643K 760 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 129 0 in_multi 18 1K 2K 78643K 166 0 ether_multi 1 0K 0K 78643K 35 0 mrt 0 0K 0K 78643K 28 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 583 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 208 370K 370K 78643K 12020 0 UVM aobj 27 2K 2K 78643K 27 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 160 0 NDP 16 0K 0K 78643K 62 0 temp 151 3975K 4041K 78643K 37896 0 kqueue 3 4K 16K 78643K 235 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 96 0 94 1 0 1 1 0 8 0 rtentry 112 90 0 60 2 0 2 2 0 8 0 unpcb 120 1103 0 1088 2 1 1 2 0 8 0 syncache 296 23 0 23 5 5 0 1 0 8 0 tcpqe 32 75 0 75 4 4 0 1 0 8 0 tcpcb 736 595 0 588 9 7 2 4 0 8 0 inpcb 304 1580 0 1570 4 2 2 3 0 8 0 rttmr 72 7 0 7 1 1 0 1 0 8 0 nd6 48 16 0 15 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 2 0 1 0 8 0 kcovpl 48 4 0 3 1 0 1 1 0 8 0 ppxss 1128 21 0 21 2 2 0 1 0 8 0 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 7 0 7 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 pfstitem 24 26 0 24 1 0 1 1 0 8 0 pfstkey 112 26 0 24 1 0 1 1 0 8 0 pfstate 320 26 0 24 2 1 1 2 0 8 0 pfrule 1360 31 0 25 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 376 0 202 14 2 12 13 0 8 0 art_table 32 377 0 202 2 0 2 2 0 8 0 art_node 16 89 0 54 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 0 1 0 1 1 0 8 0 semapl 112 55 0 45 1 0 1 1 0 8 0 shmpl 112 24 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7716 0 6298 90 1 89 90 0 8 0 ffsino 272 7716 0 6298 96 1 95 96 0 8 0 nchpl 144 13442 0 11857 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 32573 0 32573 1 0 1 1 0 8 1 percpumem 16 67 0 34 1 0 1 1 0 8 0 vcpupl 1984 25 0 0 4 0 4 4 0 8 0 vmpool 560 25 0 0 2 0 2 2 0 8 0 scxspl 216 39436 0 39436 9 8 1 8 0 8 1 plimitpl 152 88 0 80 1 0 1 1 0 8 0 sigapl 424 5077 0 5045 4 0 4 4 0 8 0 futexpl 56 30879 0 30879 1 0 1 1 0 8 1 knotepl 112 358 0 340 1 0 1 1 0 8 0 kqueuepl 168 2389 0 2379 1 0 1 1 0 8 0 pipepl 336 249 0 239 4 2 2 3 0 8 0 fdescpl 496 5060 0 5045 3 0 3 3 0 8 0 filepl 152 15562 0 15471 8 3 5 7 0 8 0 lockfpl 104 449 0 448 1 0 1 1 0 8 0 lockfspl 48 173 0 172 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 1402 0 1390 1 0 1 1 0 8 0 zombiepl 144 5046 0 5045 1 0 1 1 0 8 0 processpl 1080 5077 0 5045 3 0 3 3 0 8 0 procpl 672 11007 0 10968 5 1 4 5 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 74 0 72 5 4 1 1 0 8 0 sockpl 432 2789 0 2762 9 5 4 5 0 8 0 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 254 0 0 18 1 17 17 0 8 0 mtagpl 96 244 0 0 6 0 6 6 0 8 0 mbufpl 256 763 0 0 40 0 40 40 0 8 0 bufpl 280 9666 0 3417 447 0 447 447 0 8 0 anonpl 24 355763 0 348799 80 36 44 60 0 186 0 amapchunkpl 152 33161 0 32911 36 25 11 28 0 158 0 amappl16 200 14963 0 14752 28 16 12 21 0 8 0 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl14 184 27 0 22 1 0 1 1 0 8 0 amappl13 176 2960 0 2957 1 0 1 1 0 8 0 amappl12 168 17 0 14 1 0 1 1 0 8 0 amappl11 160 743 0 726 1 0 1 1 0 8 0 amappl10 152 19 0 14 1 0 1 1 0 8 0 amappl9 144 1515 0 1513 1 0 1 1 0 8 0 amappl8 136 265 0 190 4 1 3 3 0 8 0 amappl7 128 1493 0 1486 1 0 1 1 0 8 0 amappl6 120 81 0 66 1 0 1 1 0 8 0 amappl5 112 5206 0 5188 1 0 1 1 0 8 0 amappl4 104 990 0 958 1 0 1 1 0 8 0 amappl3 96 3128 0 3120 1 0 1 1 0 8 0 amappl2 88 39895 0 39831 3 1 2 3 0 8 0 amappl1 80 145384 0 144935 25 13 12 21 0 8 0 amappl 88 11460 0 11379 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 26 0 0 1 0 1 1 0 8 0 uaddrrnd 24 5085 0 5045 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5085 0 5045 1 0 1 1 0 8 0 vmmpekpl 168 24321 0 24287 2 0 2 2 0 8 0 vmmpepl 168 633241 0 631852 106 33 73 80 0 357 1 vmsppl 368 5084 0 5045 5 1 4 4 0 8 0 rwobjpl 56 130558 0 129612 29 14 15 19 0 8 0 pdppl 4096 10177 0 10115 82 16 66 66 0 8 4 pvpl 32 1751448 0 1742150 174 91 83 117 0 265 2 pmappl 232 5084 0 5045 4 1 3 3 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 375 0 34 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(ffffffff8273cff0) 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(ffffffff828def50) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828def50) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828def50,2) 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(ffff8000211fff70,1) at sleep_finish+0x326 sys/kern/kern_synch.c:433 tsleep(ffffffff828e421c,118,ffffffff82428331,419511) at tsleep+0x12b sys/kern/kern_synch.c:158 doppoll(ffff8000211c3ce8,7f7ffffd3740,3,ffff8000212000f8,0,ffff8000212001b0) at doppoll+0x577 sys_poll(ffff8000211c3ce8,ffff800021200160,ffff8000212001b0) at sys_poll+0xa7 syscall(ffff800021200230) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021200230) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:590 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd3720, count: -12 ddb{0}> machine ddbcpu 1 Stopped at pfi_ifhead_RB_REMOVE+0x50: movq 0x10(%r12),%rbx ddb{1}> trace pfi_ifhead_RB_REMOVE(ffffffff82935fc0,ffff800000b3b200) at pfi_ifhead_RB_REMOVE+0x50 sys/net/pf_if.c:80 pfi_detach_ifgroup(ffff800000b37d80) at pfi_detach_ifgroup+0x11b pfi_kif_unref sys/net/pf_if.c:211 [inline] pfi_detach_ifgroup(ffff800000b37d80) at pfi_detach_ifgroup+0x11b sys/net/pf_if.c:304 if_delgroup(ffff800000b3c000,ffff800000b37d80) at if_delgroup+0x1a3 sys/net/if.c:2705 if_detach(ffff800000b3c000) at if_detach+0x1cb sys/net/if.c:1049 tun_clone_destroy(ffff800000b3c000) at tun_clone_destroy+0x1e1 sys/net/if_tun.c:325 if_clone_destroy(ffff80002129f6d0) 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(ffff80002129f7a0) at spec_close+0x311 sys/kern/spec_vnops.c:560 VOP_CLOSE(fffffd806e305088,7,fffffd807f7b7660,ffff80002123d500) at VOP_CLOSE+0xeb sys/kern/vfs_vops.c:177 vn_closefile(fffffd80694edad0,ffff80002123d500) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd80694edad0,ffff80002123d500) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd80694edad0,ffff80002123d500) at fdrop+0xc2 sys/kern/kern_descrip.c:1279 closef(fffffd80694edad0,ffff80002123d500) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff80002123d500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff80002123d500,0,19,1) at exit1+0x345 sys/kern/kern_exit.c:199 postsig(ffff80002123d500,19) at postsig+0x59c sigexit sys/kern/kern_sig.c:1494 [inline] postsig(ffff80002123d500,19) at postsig+0x59c sys/kern/kern_sig.c:1423 userret(ffff80002123d500) at userret+0x189 sys/kern/kern_sig.c:1914 syscall(ffff80002129fc20) at syscall+0x55c mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff80002129fc20) at syscall+0x55c sys/arch/amd64/amd64/trap.c:612 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffa4c0, count: -18