login: 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(ffff80000149e800) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff80000149e800) at if_detach+0x1bb sys/net/if.c:1226 tun_clone_destroy(ffff80000149e800) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff8000357f9860) at if_clone_destroy+0x1d5 sys/net/if.c:1415 ifioctl(ffff8000014a0ec8,80206979,ffff8000357f9860,ffff8000357e87e8) at ifioctl+0x59d sys/net/if.c:2092 sys_ioctl(ffff8000357e87e8,ffff8000357f9a40,ffff8000357f9990) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff8000357f9a40) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000357f9a40) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb67ff03ecd0, count: -8 ddb{1}> show registers rdi 0xffff80002a3d0000 rsi 0x17339 acpi_pdirpa+0x31aa rbp 0xffff8000357f9680 rbx 0x80206979 __kernel_virt_to_phys+0x206979 rdx 0xffff80002a3d0000 rcx 0x17338 acpi_pdirpa+0x31a9 rax 0xffffffff82afb089 bpfdetach+0xb9 r8 0 r9 0xffffffffffffffff r10 0xd3aaed44433da107 r11 0x60b1c38652e76de6 r12 0xdead0002deadbeef r13 0xffff80000149ee00 r14 0xffff80000149e800 r15 0xdead0002deadbeef rip 0xffffffff82afb040 bpfdetach+0x70 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000357f9650 ss 0x10 bpfdetach+0x70: movq 0(%r15),%r12 ddb{1}> show proc PROC (syz-executor) tid=25794 pid=47939 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000357e8fb0,0xffff8000357e9a20 process=0xffff8000357f3040 user=0xffff8000357f4000, vmspace=0xfffffd806bc577c0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 38451 404647 20628 0 2 0 syz-executor 38451 479828 20628 0 3 0x4000080 fsleep syz-executor 89107 160831 67019 0 2 0 syz-executor 89107 2496 67019 0 2 0x4000000 syz-executor 74019 348829 71492 0 2 0 syz-executor 74019 466107 71492 0 3 0x4000080 lockf syz-executor 74019 322746 71492 0 3 0x4000080 fsleep syz-executor 74019 6691 71492 0 2 0x4000000 syz-executor 47939 151798 99649 0 3 0x80 nanoslp syz-executor *47939 25794 99649 0 7 0x4000000 syz-executor 47939 521931 99649 0 3 0x4000080 fsleep syz-executor 51985 217933 97829 0 2 0 syz-executor 51985 347080 97829 0 2 0x4000000 syz-executor 51985 462698 97829 0 3 0x4000000 inode syz-executor 79898 169911 0 0 3 0x14200 acct acct 69810 18324 0 0 3 0x14200 bored sosplice 76156 328853 56410 0 3 0x82 wait syz-executor 71492 195606 56410 0 3 0x82 nanoslp syz-executor 20628 9938 56410 0 3 0x82 nanoslp syz-executor 97016 35770 56410 0 2 0x2 syz-executor 55777 292229 56410 0 7 0x3 syz-executor 97829 288600 56410 0 3 0x82 nanoslp syz-executor 67019 53040 56410 0 2 0x3 syz-executor 99649 522307 56410 0 3 0x82 nanoslp syz-executor 56410 216800 31263 0 2 0x3 syz-executor 31263 78022 31819 0 3 0x10008a sigsusp ksh 31819 63466 8019 0 3 0x98 kqread sshd-session 8019 34026 39904 0 3 0x92 kqread sshd-session 79718 16543 1 0 3 0x100083 ttyin getty 39904 509282 1 0 3 0x88 kqread sshd 92731 479706 61070 74 3 0x1100092 bpf pflogd 61070 334000 1 0 3 0x80 sbwait pflogd 35276 202686 77655 73 3 0x1100090 kqread syslogd 77655 303710 1 0 3 0x100082 sbwait syslogd 51977 67308 1 0 3 0x100080 kqread resolvd 80248 1939 33107 77 3 0x100092 kqread dhcpleased 18184 521431 33107 77 3 0x100092 kqread dhcpleased 33107 267663 1 0 3 0x80 kqread dhcpleased 68553 479694 0 0 3 0x14200 bored smr 81918 204371 0 0 2 0x14200 zerothread 83303 77640 0 0 3 0x14200 aiodoned aiodoned 80967 214664 0 0 3 0x14200 syncer update 25378 407571 0 0 3 0x14200 cleaner cleaner 5225 344035 0 0 3 0x14200 reaper reaper 65078 148725 0 0 3 0x14200 pgdaemon pagedaemon 32260 142270 0 0 3 0x14200 bored viomb 34401 462300 0 0 3 0x40014200 acpi0 acpi0 772 99347 0 0 3 0x40014200 idle1 43633 162424 0 0 3 0x14200 bored softnet1 69460 112286 0 0 3 0x14200 bored softnet0 4959 113275 0 0 3 0x14200 bored systqmp 94840 410986 0 0 3 0x14200 bored systq 25716 395073 0 0 3 0x14200 tmoslp softclockmp 79910 65769 0 0 3 0x40014200 tmoslp softclock 28544 332349 0 0 3 0x40014200 idle0 1 214586 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 74019 (syz-executor) thread 0xffff8000357e9778 (6691) exclusive rwlock vmmaplk r = 0 (0xfffffd806bc576d8) #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+0x3c6 sys/arch/amd64/amd64/trap.c:605 #7 recall_trap+0x8 Process 47939 (syz-executor) thread 0xffff8000357e87e8 (25794) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839ad490) #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:1217 #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:1226 #12 tun_clone_destroy+0x2ce sys/net/if_tun.c:340 #13 if_clone_destroy+0x1d5 sys/net/if.c:1415 #14 ifioctl+0x59d sys/net/if.c:2092 #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:748 #17 Xsyscall+0x128 exclusive rwlock clonelk r = 0 (0xffffffff838606c8) #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+0x67 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2092 #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:748 #6 Xsyscall+0x128 Process 51985 (syz-executor) thread 0xffff8000357e8d18 (347080) exclusive rrwlock inode r = 0 (0xfffffd8060d00460) #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+0xa3 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:748 #9 Xsyscall+0x128 Process 51985 (syz-executor) thread 0xffff8000fffeed10 (462698) exclusive rrwlock inode r = 0 (0xfffffd8060d00a28) #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+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dorenameat+0x91 sys/kern/vfs_syscalls.c:2990 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 97016 (syz-executor) thread 0xffff8000fffefca0 (35770) exclusive rwlock vmmaplk r = 0 (0xfffffd806eee74d8) #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 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3741 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd800b0274d0) #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 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3732 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10199 11155K 11497K 166960K 11665 0 pcb 17 14K 16K 166960K 131 0 rtable 217 6K 7K 166960K 361 0 pf 37 18K 82K 166960K 60 0 ifaddr 42 7K 7K 166960K 51 0 ifgroup 55 2K 2K 166960K 65 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 37K 166960K 76 0 ioctlops 0 0K 4K 166960K 1513 0 iov 0 0K 12K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1341 84K 85K 166960K 1559 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 289 0 proc 72 115K 164K 166960K 543 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 16 0 in_multi 96 7K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 392 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 240 167K 176K 166960K 4673 0 UVM aobj 4 2K 2K 166960K 5 0 pinsyscall 42 84K 101K 166960K 1418 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 12 0K 2K 166960K 32 0 temp 42 8647K 8712K 166960K 10568 0 kqueue 13 20K 26K 166960K 45 0 SYN cache 2 16K 16K 166960K 2 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 42 0 39 1 0 1 1 0 8 0 rtentry 176 114 0 14 6 0 6 6 0 8 0 unpcb 144 125 0 108 2 0 2 2 0 8 1 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 155 0 150 7 0 7 7 0 8 6 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 397 0 389 10 1 9 10 0 8 8 nd6 152 25 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 3 0 3 1 0 1 1 0 8 1 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 8 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 29 0 0 1 0 1 1 0 8 0 pfstkey 128 32 0 3 1 0 1 1 0 8 0 pfstate 384 30 0 2 3 0 3 3 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 490 0 72 31 0 31 31 0 8 3 art_table 40 491 0 72 5 0 5 5 0 8 0 art_node 32 114 0 24 1 0 1 1 0 8 0 semapl 112 4 0 1 1 0 1 1 0 8 0 shmpl 112 2 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1916 0 399 96 0 96 96 0 8 0 ffsino 296 1916 0 399 118 0 118 118 0 8 0 nchpl 144 2322 0 622 64 0 64 64 0 8 0 vnodes 216 2080 0 0 116 0 116 116 0 8 0 namei 1024 7454 0 7453 4 2 2 2 0 8 1 percpumem 16 53 0 4 1 0 1 1 0 8 0 kstatmem 264 34 0 8 2 0 2 2 0 8 0 scxspl 216 10024 0 10024 3 2 1 2 1 8 1 plimitpl 152 53 0 34 1 0 1 1 0 8 0 sigapl 424 600 0 551 7 0 7 7 0 8 1 knotepl 120 290 0 0 9 0 9 9 0 8 0 kqueuepl 224 71 0 62 2 0 2 2 0 8 1 pipepl 344 126 0 99 3 0 3 3 0 8 0 fdescpl 528 582 0 551 3 0 3 3 0 8 0 filepl 160 2904 0 2686 16 0 16 16 0 8 5 lockfpl 104 103 0 97 1 0 1 1 0 8 0 lockfspl 48 29 0 25 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 405 0 392 1 0 1 1 0 8 0 zombiepl 144 674 0 673 2 1 1 1 0 8 0 processpl 1232 600 0 551 5 0 5 5 0 8 0 procpl 664 926 0 868 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 752 574 0 546 14 2 12 14 0 8 8 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 133 0 0 17 0 17 17 0 8 0 mcl2k 2048 36 0 0 5 0 5 5 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 240 0 0 15 0 15 15 0 8 0 bufpl 280 4106 0 132 284 0 284 284 0 8 0 anonpl 32 7502 0 0 61 0 61 61 0 246 0 amapchunkpl 152 13753 0 13272 28 0 28 28 0 158 7 amappl16 200 2577 0 2548 19 4 15 15 0 8 8 amappl15 192 1 0 1 1 1 0 1 0 8 0 amappl14 184 3 0 3 1 1 0 1 0 8 0 amappl13 176 426 0 424 1 0 1 1 0 8 0 amappl12 168 946 0 904 3 0 3 3 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 56 0 42 1 0 1 1 0 8 0 amappl9 144 262 0 262 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 81 0 80 1 0 1 1 0 8 0 amappl6 120 278 0 265 1 0 1 1 0 8 0 amappl5 112 78 0 67 1 0 1 1 0 8 0 amappl4 104 413 0 384 1 0 1 1 0 8 0 amappl3 96 2249 0 2158 3 0 3 3 0 8 0 amappl2 88 698 0 623 2 0 2 2 0 8 0 amappl1 80 9925 0 9329 14 0 14 14 0 8 0 amappl 88 3915 0 3753 5 0 5 5 0 92 0 uvmvnodes 80 2080 0 0 43 0 43 43 0 8 0 dma4096 4096 2 0 2 2 1 1 1 0 8 1 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 72 4 0 1 1 0 1 1 0 8 0 uaddrrnd 24 582 0 551 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 582 0 551 1 0 1 1 0 8 0 vmmpekpl 168 6774 0 6741 2 0 2 2 0 8 0 vmmpepl 168 45361 0 43467 99 0 99 99 0 357 1 vmsppl 488 581 0 551 5 0 5 5 0 8 1 rwobjpl 80 18025 0 15016 67 0 67 67 0 8 0 pdppl 4096 1172 0 1102 104 32 72 88 0 8 2 pvpl 32 15683 0 0 128 1 127 127 0 265 0 pmappl 256 581 0 551 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 297 0 37 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(ffffffff837fdff0) 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(ffffffff839ad288) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839ad288) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsyscall(ffff8000ffffc008,63,18,ffff80002a352870) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff8000ffffc008,63,18,ffff80002a352870) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80002a352870) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a352870) at syscall+0x304 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x758a0d2fd9a0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at bpfdetach+0x70: movq 0(%r15),%r12 ddb{1}> trace bpfdetach(ffff80000149e800) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff80000149e800) at if_detach+0x1bb sys/net/if.c:1226 tun_clone_destroy(ffff80000149e800) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff8000357f9860) at if_clone_destroy+0x1d5 sys/net/if.c:1415 ifioctl(ffff8000014a0ec8,80206979,ffff8000357f9860,ffff8000357e87e8) at ifioctl+0x59d sys/net/if.c:2092 sys_ioctl(ffff8000357e87e8,ffff8000357f9a40,ffff8000357f9990) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff8000357f9a40) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000357f9a40) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb67ff03ecd0, count: -8