kernel: protection fault trap, code=0 Stopped at bpfdetach+0x70: movq 0(%r15),%r12 ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace bpfdetach(ffff8000014aa000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff8000014aa000) at if_detach+0x1bb sys/net/if.c:1222 tun_clone_destroy(ffff8000014aa000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff80002a30be90) at if_clone_destroy+0x205 sys/net/if.c:1412 ifioctl(ffff8000014d17a8,80206979,ffff80002a30be90,ffff80003c42d4e8) at ifioctl+0x59d sys/net/if.c:2089 sys_ioctl(ffff80003c42d4e8,ffff80002a30c070,ffff80002a30bfc0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002a30c070) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a30c070) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9e3aa6a510, count: -8 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a30bcb0 rbx 0x80206979 __kernel_virt_to_phys+0x206979 rdx 0 rcx 0xffff80003c42d4e8 rax 0xffff8000299edff0 r8 0x2 r9 0x1 r10 0xdf37afadc98cc854 r11 0xd041024c3c74defb r12 0xdeaf0002deafbead r13 0xffff8000014aa600 r14 0xffff8000014aa000 r15 0xdeaf0002deafbead rip 0xffffffff811d7b70 bpfdetach+0x70 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a30bc80 ss 0 bpfdetach+0x70: movq 0(%r15),%r12 ddb{1}> show proc PROC (syz-executor) tid=8374 pid=1399 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c42cd20,0xffff80003c42d790 process=0xffff8000fffea6a8 user=0xffff80002a307000, vmspace=0xfffffd806cade5d0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 42037 455527 73184 0 2 0 syz-executor 42037 59255 73184 0 3 0x4000000 biowait syz-executor 42037 36200 73184 0 2 0x4000000 syz-executor 90935 469732 8499 0 2 0 syz-executor 90935 268845 8499 0 2 0x4000000 syz-executor 68178 462623 33886 0 2 0 syz-executor 68178 47798 33886 0 3 0x4000080 kqsel syz-executor 68178 62221 33886 0 3 0x4000080 fsleep syz-executor 70686 54591 70028 60929 2 0x10 syz-executor 70686 107841 70028 60929 3 0x4000090 fsleep syz-executor 9341 455487 13219 0 3 0x80 nanoslp syz-executor 9341 395624 13219 0 3 0x4000080 sbwait syz-executor 9341 49489 13219 0 3 0x4000080 fsleep syz-executor 9341 221498 13219 0 3 0x4000080 fsleep syz-executor 1399 400401 83572 0 3 0x80 nanoslp syz-executor * 1399 8374 83572 0 7 0x4000000 syz-executor 1399 89962 83572 0 3 0x4000080 fsleep syz-executor 84327 59036 64773 0 2 0 syz-executor 84327 13149 64773 0 3 0x4000000 biowait syz-executor 84327 229719 64773 0 3 0x4000000 fltagain2 syz-executor 84327 385131 64773 0 3 0x4000080 pipeiolk syz-executor 83572 492432 8260 0 3 0x82 nanoslp syz-executor 84521 301207 8260 0 7 0x2 syz-executor 87407 375242 1 0 3 0x100083 ttyin getty 64773 215868 8260 0 3 0x82 nanoslp syz-executor 8499 195987 8260 0 3 0x82 nanoslp syz-executor 33886 272658 8260 0 3 0x82 nanoslp syz-executor 13219 256098 8260 0 3 0x82 nanoslp syz-executor 73184 154689 8260 0 3 0x82 nanoslp syz-executor 70028 144470 8260 0 3 0x82 nanoslp syz-executor 8260 72699 56781 0 2 0x3 syz-executor 56781 108760 15416 0 3 0x10008a sigsusp ksh 15416 237396 12327 0 3 0x98 kqread sshd-session 12327 153815 97609 0 3 0x92 kqread sshd-session 97609 446773 1 0 3 0x88 kqread sshd 90333 318669 19753 74 3 0x1100092 bpf pflogd 19753 333159 1 0 3 0x80 sbwait pflogd 25100 461415 97388 73 3 0x1100090 kqread syslogd 97388 405331 1 0 3 0x100082 sbwait syslogd 19723 500349 1 0 3 0x100080 kqread resolvd 15964 159728 46160 77 3 0x100092 kqread dhcpleased 58536 100162 46160 77 3 0x100092 kqread dhcpleased 46160 19143 1 0 3 0x80 kqread dhcpleased 94073 199792 0 0 3 0x14200 bored smr 73243 228702 0 0 2 0x14200 zerothread 48724 110334 0 0 3 0x14200 aiodoned aiodoned 64603 310487 0 0 3 0x14200 syncer update 94252 494205 0 0 3 0x14200 cleaner cleaner 86522 57417 0 0 3 0x14200 reaper reaper 34403 4360 0 0 3 0x14200 pgdaemon pagedaemon 53708 182093 0 0 3 0x14200 bored viomb 51065 326210 0 0 3 0x40014200 acpi0 acpi0 74934 503860 0 0 3 0x40014200 idle1 99435 510966 0 0 3 0x14200 bored softnet1 84503 142260 0 0 3 0x14200 bored softnet0 69400 325694 0 0 3 0x14200 bored systqmp 31346 59789 0 0 3 0x14200 bored systq 39210 276114 0 0 3 0x14200 tmoslp softclockmp 78212 81953 0 0 3 0x40014200 tmoslp softclock 64733 389865 0 0 3 0x40014200 idle0 1 410199 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 42037 (syz-executor) thread 0xffff8000ffffd760 (59255) exclusive rrwlock inode r = 0 (0xfffffd806e9a9c80) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 doopenat+0x707 sys/kern/vfs_syscalls.c:1178 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #7 Xsyscall+0x128 Process 42037 (syz-executor) thread 0xffff80003c453a28 (36200) exclusive rwlock vmmaplk r = 0 (0xfffffd806b4616e0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5171 #3 uvm_map+0x404 sys/uvm/uvm_map.c:1021 #4 uvm_mmapfile+0x40b sys/uvm/uvm_mmap.c:1139 #5 sys_mmap+0xe96 sys/uvm/uvm_mmap.c:396 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #7 Xsyscall+0x128 Process 90935 (syz-executor) thread 0xffff80003c4522d0 (268845) exclusive rwlock vmmaplk r = 0 (0xfffffd806b461c98) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 Process 1399 (syz-executor) thread 0xffff80003c42d4e8 (8374) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838ea388) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #3 rw_do_enter_write+0x1dc sys/kern/kern_rwlock.c:298 #4 lf_purgelocks+0x2f sys/kern/vfs_lockf.c:731 #5 vgonel+0x47e sys/kern/vfs_subr.c:1216 #6 vop_generic_revoke+0x3ea sys/kern/vfs_default.c:124 #7 VOP_REVOKE+0x65 sys/kern/vfs_vops.c:291 #8 vdevgone+0x17b sys/kern/vfs_subr.c:-1 #9 bpfsdetach+0x155 sys/net/bpf.c:1794 #10 bpfdetach+0xa6 sys/net/bpf.c:-1 #11 if_detach+0x1bb sys/net/if.c:1222 #12 tun_clone_destroy+0x2ce sys/net/if_tun.c:340 #13 if_clone_destroy+0x205 sys/net/if.c:1412 #14 ifioctl+0x59d sys/net/if.c:2089 #15 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #16 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #16 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #17 Xsyscall+0x128 exclusive rwlock clonelk r = 0 (0xffffffff837a65d8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 if_clone_destroy+0x93 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2089 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #6 Xsyscall+0x128 Process 84327 (syz-executor) thread 0xffff8000ffff2fa8 (13149) exclusive rrwlock inode r = 0 (0xfffffd806e905dd0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10240 11102K 13890K 166960K 15841 0 pcb 17 17K 33K 166960K 490 0 rtable 226 13K 13K 166960K 748 0 pf 37 18K 81K 166960K 233 0 ifaddr 37 6K 8K 166960K 162 0 ifgroup 61 2K 3K 166960K 277 0 sysctl 4 1K 9K 166960K 16 0 counters 68 36K 38K 166960K 352 0 ioctlops 0 0K 5K 166960K 1993 0 iov 1 0K 24K 166960K 100 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1611 101K 102K 166960K 3710 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 24 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 54 0 dirhash 12 2K 3K 166960K 54 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 1968 0 sigio 0 0K 0K 166960K 59 0 proc 72 115K 164K 166960K 884 0 subproc 72 4K 4K 166960K 128 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 332 0 in_multi 78 5K 7K 166960K 245 0 ether_multi 2 0K 0K 166960K 19 0 mrt 1 0K 0K 166960K 20 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 265 1182K 1182K 166960K 265 0 exec 0 0K 1K 166960K 683 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 249 152K 177K 166960K 19731 0 UVM aobj 58 8K 8K 166960K 62 0 pinsyscall 42 84K 106K 166960K 3259 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 122 0 NDP 12 0K 2K 166960K 116 0 temp 80 8672K 8784K 166960K 79895 0 kqueue 15 22K 32K 166960K 405 0 SYN cache 2 8K 16K 166960K 3 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 245 0 240 2 1 1 2 0 8 0 rtentry 176 216 0 134 5 0 5 5 0 8 0 unpcb 144 1446 0 1427 15 9 6 6 0 8 5 syncache 336 8 0 8 4 3 1 1 0 8 1 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 736 638 0 632 16 10 6 7 0 8 5 arp 136 33 0 17 1 0 1 1 0 8 0 inpcb 328 2427 0 2414 23 17 6 12 0 8 4 nd6 152 43 0 25 1 0 1 1 0 8 0 pkpcb 40 8 0 8 4 3 1 1 0 8 1 kcovpl 48 14 0 6 1 0 1 1 0 8 0 ppxss 1192 118 0 118 3 2 1 1 0 8 1 pppxif 1504 10 0 10 4 4 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 25 0 13 1 0 1 1 0 482 0 pffrnode 88 25 0 13 1 0 1 1 0 8 0 pffrent 40 73 0 61 1 0 1 1 0 8 0 pfosfp 40 1430 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 111 0 51 1 0 1 1 0 8 0 pfstkey 128 113 0 53 2 0 2 2 0 8 0 pfstate 448 113 0 53 7 0 7 7 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 rttmr 136 4 0 4 2 2 0 1 0 8 0 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 1085 0 744 32 7 25 31 0 8 2 art_table 40 1090 0 744 5 0 5 5 0 8 0 art_node 32 214 0 140 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 14 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 50 0 40 1 0 1 1 0 8 0 shmpl 112 57 0 4 2 0 2 2 0 8 0 dirhash 1024 45 0 28 3 0 3 3 0 8 0 dino2pl 256 5169 0 3650 96 0 96 96 0 8 0 ffsino 296 5169 0 3650 118 0 118 118 0 8 0 nchpl 144 7787 0 6066 64 0 64 64 0 8 0 rtmask 32 28 0 28 5 4 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 28501 0 28501 3 2 1 2 0 8 1 percpumem 16 191 0 142 1 0 1 1 0 8 0 vcpupl 3968 2 0 0 1 0 1 1 0 8 0 vmpool 840 2 0 0 1 0 1 1 0 8 0 kstatmem 264 178 0 150 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 8 0 8 3 2 1 1 0 8 1 scxspl 216 48247 0 48245 15 13 2 8 1 8 1 plimitpl 152 457 0 439 1 0 1 1 0 8 0 sigapl 424 2286 0 2239 9 3 6 8 0 8 0 knotepl 120 541 0 0 17 0 17 17 0 8 0 kqueuepl 224 793 0 781 12 9 3 5 0 8 2 pipepl 344 310 0 282 3 0 3 3 0 8 0 fdescpl 528 2240 0 2209 3 0 3 3 0 8 0 filepl 160 16392 0 16161 30 15 15 18 0 8 2 lockfpl 104 1257 0 1250 5 4 1 2 0 8 0 lockfspl 48 425 0 418 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 135 0 118 1 0 1 1 0 8 0 ucredpl 104 2752 0 2738 1 0 1 1 0 8 0 zombiepl 144 2839 0 2839 1 0 1 1 0 8 1 processpl 1232 2286 0 2239 6 2 4 6 0 8 0 procpl 664 5427 0 5366 8 2 6 8 0 8 0 sosppl 176 19 0 19 5 5 0 1 0 8 0 sockpl 752 4238 0 4201 49 37 12 18 0 8 7 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 134 0 0 17 0 17 17 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 42 0 0 5 1 4 5 0 8 0 mtagpl 96 38 0 0 1 0 1 1 0 8 0 mbufpl 256 272 67 0 15 0 15 15 0 8 0 bufpl 280 19783 0 13646 439 0 439 439 0 8 0 anonpl 32 12658 0 0 103 0 103 103 0 246 0 amapchunkpl 152 67494 0 66976 56 23 33 35 0 158 10 amappl16 200 7234 0 7160 38 24 14 31 0 8 3 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 9 0 9 2 2 0 1 0 8 0 amappl13 176 492 0 491 1 0 1 1 0 8 0 amappl12 168 2647 0 2605 3 0 3 3 0 8 0 amappl11 160 27 0 27 1 1 0 1 0 8 0 amappl10 152 50 0 36 1 0 1 1 0 8 0 amappl9 144 261 0 261 1 1 0 1 0 8 0 amappl8 136 28 0 25 1 0 1 1 0 8 0 amappl7 128 110 0 108 1 0 1 1 0 8 0 amappl6 120 357 0 343 1 0 1 1 0 8 0 amappl5 112 84 0 73 1 0 1 1 0 8 0 amappl4 104 486 0 456 1 0 1 1 0 8 0 amappl3 96 11916 0 11815 3 0 3 3 0 8 0 amappl2 88 2463 0 2386 2 0 2 2 0 8 0 amappl1 80 18023 0 17426 17 3 14 15 0 8 0 amappl 88 18594 0 18423 5 0 5 5 0 92 0 uvmvnodes 80 161 0 0 4 0 4 4 0 8 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 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 128 259 0 259 4 3 1 1 0 8 1 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 61 0 4 2 0 2 2 0 8 0 uaddrrnd 24 2240 0 2209 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2240 0 2209 1 0 1 1 0 8 0 vmmpekpl 168 19069 0 19019 3 0 3 3 0 8 0 vmmpepl 168 147012 0 145016 119 20 99 111 0 357 7 vmsppl 488 2239 0 2209 6 1 5 5 0 8 0 rwobjpl 80 39886 0 38678 34 4 30 34 0 8 0 pdppl 4096 4491 0 4420 116 43 73 83 0 8 2 pvpl 32 20519 0 0 166 0 166 166 0 265 0 pmappl 256 2241 0 2209 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 331 0 68 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8382fff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff838ea180) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838ea180) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a306500,ffff80000006b400) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838ea180) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff838ea180) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80002a3066d0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a3066d0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d5ae4480850, count: -9 ddb{0}> machine ddbcpu 1 Stopped at bpfdetach+0x70: movq 0(%r15),%r12 ddb{1}> trace bpfdetach(ffff8000014aa000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff8000014aa000) at if_detach+0x1bb sys/net/if.c:1222 tun_clone_destroy(ffff8000014aa000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff80002a30be90) at if_clone_destroy+0x205 sys/net/if.c:1412 ifioctl(ffff8000014d17a8,80206979,ffff80002a30be90,ffff80003c42d4e8) at ifioctl+0x59d sys/net/if.c:2089 sys_ioctl(ffff80003c42d4e8,ffff80002a30c070,ffff80002a30bfc0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002a30c070) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a30c070) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9e3aa6a510, count: -8