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(ffff80000146c000) at bpfdetach+0x70 sys/net/bpf.c:1778 if_detach(ffff80000146c000) at if_detach+0x153 sys/net/if.c:1212 tun_clone_destroy(ffff80000146c000) at tun_clone_destroy+0x2d6 sys/net/if_tun.c:346 if_clone_destroy(ffff80002a390d40) at if_clone_destroy+0x1d7 sys/net/if.c:1401 ifioctl(ffff80000163ce80,80206979,ffff80002a390d40,ffff8000397fd9c8) at ifioctl+0x5c5 sys/net/if.c:-1 sys_ioctl(ffff8000397fd9c8,ffff80002a390f20,ffff80002a390e70) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80002a390f20) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a390f20) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd22b1763220, count: -8 ddb{1}> show registers rdi 0xffff80002cfd1000 rsi 0x5b9f3 acpi_pdirpa+0x47864 rbp 0xffff80002a390b60 rbx 0x80206979 __kernel_virt_to_phys+0x206979 rdx 0xffff80002cfd1000 rcx 0x5b9f2 acpi_pdirpa+0x47863 rax 0xffffffff8264f879 bpfdetach+0xb9 r8 0 r9 0xffffffffffffffff r10 0xa467b91e1ff3304d r11 0x116143738398cabe r12 0xdeaf0002deaf4152 r13 0x800 r14 0xffff80000146c000 r15 0xdeaf0002deaf4152 rip 0xffffffff8264f830 bpfdetach+0x70 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a390b30 ss 0 bpfdetach+0x70: movq 0(%r15),%r12 ddb{1}> show proc PROC (syz-executor) tid=218124 pid=11407 tcnt=2 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=0xffff8000ffff0cf0,0xffff8000ffff1220 process=0xffff80003c46ebc0 user=0xffff80002a38b000, vmspace=0xfffffd806c147018 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=3, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16944 18916 62815 0 7 0 syz-executor 68744 379596 73791 0 3 0x80 nanoslp syz-executor 68744 403682 73791 0 3 0x4000080 fsleep syz-executor 11407 285309 44530 0 3 0x80 nanoslp syz-executor *11407 218124 44530 0 7 0x4000000 syz-executor 44530 399077 16757 0 3 0x82 nanoslp syz-executor 36769 18933 0 0 3 0x14200 acct acct 91112 486410 47221 0 3 0x82 sbwait sshd-session 99394 254960 16757 0 3 0x2 biowait syz-executor 74492 329599 16757 0 2 0x2 syz-executor 50875 228817 1 0 3 0x100083 ttyopn getty 12243 105831 0 0 3 0x14280 nfsidl nfsio 92504 427400 0 0 3 0x14280 nfsidl nfsio 94788 336084 0 0 3 0x14280 nfsidl nfsio 29376 465649 0 0 3 0x14280 nfsidl nfsio 55392 497205 0 0 3 0x14280 nfsidl nfsio 47419 377068 0 0 3 0x14280 nfsidl nfsio 79 44651 0 0 3 0x14280 nfsidl nfsio 47422 74614 0 0 3 0x14280 nfsidl nfsio 9899 474365 0 0 3 0x14280 nfsidl nfsio 27324 21829 0 0 3 0x14280 nfsidl nfsio 15017 8267 0 0 3 0x14280 nfsidl nfsio 70210 522251 0 0 3 0x14280 nfsidl nfsio 92336 88332 0 0 3 0x14280 nfsidl nfsio 88840 256180 0 0 3 0x14280 nfsidl nfsio 61401 331033 0 0 3 0x14280 nfsidl nfsio 1473 322878 0 0 3 0x14280 nfsidl nfsio 17414 274738 0 0 3 0x14280 nfsidl nfsio 57991 160365 0 0 3 0x14280 nfsidl nfsio 58570 206012 0 0 3 0x14280 nfsidl nfsio 53009 268268 0 0 3 0x14280 nfsidl nfsio 83129 26941 0 0 3 0x14200 bored sosplice 98911 396665 16757 0 3 0x82 wait syz-executor 73791 196672 16757 0 3 0x82 nanoslp syz-executor 36017 260856 16757 0 3 0x82 wait syz-executor 69816 272069 16757 0 3 0x82 nanoslp syz-executor 62815 68511 16757 0 3 0x82 nanoslp syz-executor 16757 334908 86797 0 3 0x2 netlock syz-executor 86797 56339 86074 0 3 0x10008a sigsusp ksh 86074 245654 63477 0 3 0x98 kqread sshd-session 63477 90023 47221 0 3 0x92 kqread sshd-session 47221 218976 1 0 3 0x88 kqread sshd 5859 14275 5031 74 3 0x1100092 bpf pflogd 5031 370512 1 0 3 0x80 sbwait pflogd 96227 488647 89482 73 3 0x1100090 kqread syslogd 89482 328576 1 0 3 0x100082 sbwait syslogd 74008 54913 1 0 3 0x100080 kqread resolvd 58732 54140 19957 77 3 0x100092 kqread dhcpleased 73201 59645 19957 77 3 0x100092 kqread dhcpleased 19957 78468 1 0 3 0x80 kqread dhcpleased 20233 218463 0 0 3 0x14200 bored smr 46811 503980 0 0 3 0x14200 pgzero zerothread 42425 213913 0 0 3 0x14200 aiodoned aiodoned 3878 51645 0 0 3 0x14200 syncer update 39747 86176 0 0 3 0x14200 cleaner cleaner 84159 170188 0 0 3 0x14200 reaper reaper 17371 432279 0 0 3 0x14200 pgdaemon pagedaemon 22183 63753 0 0 3 0x14200 bored viomb 3383 493571 0 0 3 0x40014200 acpi0 acpi0 57162 348208 0 0 3 0x40014200 idle1 6584 178098 0 0 3 0x14200 bored softnet3 93064 414043 0 0 3 0x14200 bored softnet2 43712 467935 0 0 3 0x14200 bored softnet1 88290 117244 0 0 3 0x14200 bored softnet0 46820 118272 0 0 3 0x14200 bored systqmp 84118 24256 0 0 3 0x14200 bored systq 93766 92582 0 0 3 0x14200 tmoslp softclockmp 52018 67568 0 0 3 0x40014200 tmoslp softclock 15877 461044 0 0 3 0x40014200 idle0 1 423576 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 11407 (syz-executor) thread 0xffff8000397fd9c8 (218124) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839d8340) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2da sys/kern/kern_synch.c:366 #3 rw_do_enter_write+0x1d3 sys/kern/kern_rwlock.c:291 #4 bpf_detachd+0x1b5 sys/net/bpf.c:353 #5 bpfclose+0x101 sys/net/bpf.c:425 #6 spec_close+0x45f sys/kern/spec_vnops.c:-1 #7 VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 #8 vclean+0x20f sys/kern/vfs_subr.c:1090 #9 vgonel+0xb0 sys/kern/vfs_subr.c:1192 #10 vop_generic_revoke+0x3e6 sys/kern/vfs_default.c:124 #11 VOP_REVOKE+0x65 sys/kern/vfs_vops.c:291 #12 vdevgone+0x17b sys/kern/vfs_subr.c:-1 #13 bpfsdetach+0x140 sys/net/bpf.c:1802 #14 bpfdetach+0xa6 sys/net/bpf.c:-1 #15 if_detach+0x153 sys/net/if.c:1212 #16 tun_clone_destroy+0x2d6 sys/net/if_tun.c:346 #17 if_clone_destroy+0x1d7 sys/net/if.c:1401 #18 ifioctl+0x5c5 sys/net/if.c:-1 exclusive rwlock clonelk r = 0 (0xffffffff83803d38) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 if_clone_destroy+0x67 sys/net/if.c:-1 #3 ifioctl+0x5c5 sys/net/if.c:-1 #4 sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #6 Xsyscall+0x128 Process 99394 (syz-executor) thread 0xffff8000397fe558 (254960) exclusive rrwlock inode r = 0 (0xfffffd806d0748c0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e31a428) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10222 11174K 12451K 166960K 14722 0 pcb 17 14K 28K 166960K 619 0 rtable 257 12K 12K 166960K 710 0 pf 40 18K 21K 166960K 214 0 ifaddr 44 8K 8K 166960K 136 0 ifgroup 61 2K 2K 166960K 248 0 sysctl 4 1K 9K 166960K 22 0 counters 72 37K 38K 166960K 262 0 ioctlops 0 0K 4K 166960K 1898 0 iov 0 0K 24K 166960K 106 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1555 98K 98K 166960K 3542 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 32 0 VM map 2 1K 1K 166960K 2 0 sem 24 640K 641K 166960K 88 0 dirhash 15 2K 3K 166960K 57 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 2153 0 sigio 0 0K 0K 166960K 74 0 proc 72 91K 128K 166960K 842 0 subproc 72 4K 4K 166960K 109 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 230 0 in_multi 98 7K 7K 166960K 191 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 596 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 249 177K 189K 166960K 21253 0 UVM aobj 36 2K 4K 166960K 38 0 pinsyscall 43 86K 105K 166960K 3434 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 115 0 NDP 14 0K 2K 166960K 97 0 temp 78 8696K 8824K 166960K 109403 0 kqueue 13 20K 32K 166960K 398 0 SYN cache 2 10K 18K 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 120 167 0 164 1 0 1 1 0 8 0 rtentry 176 198 0 88 6 0 6 6 0 8 0 unpcb 144 1514 0 1494 15 13 2 6 0 8 1 syncache 336 20 0 20 3 2 1 1 0 8 1 tcpqe 32 4 0 4 2 2 0 1 0 8 0 tcpcb 736 544 0 534 8 6 2 4 0 8 0 arp 128 31 0 12 1 0 1 1 0 8 0 inpcb 328 1986 0 1973 19 17 2 7 0 8 0 nd6 144 44 0 14 2 0 2 2 0 8 0 pkpcb 40 25 0 25 3 2 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1192 69 0 68 2 1 1 1 0 8 0 pppxif 1504 12 0 12 4 4 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 11 0 5 1 0 1 1 0 482 0 pffrnode 88 11 0 5 1 0 1 1 0 8 0 pffrent 40 24 0 17 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfrktable 1344 3 0 3 1 1 0 1 0 8 0 pfanchor 1288 3 0 1 2 1 1 1 0 8 0 pfstitem 24 113 0 36 1 0 1 1 0 8 0 pfstkey 128 120 0 43 3 0 3 3 0 8 0 pfstate 384 117 0 40 8 0 8 8 0 8 0 pfrule 1344 96 0 88 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 866 0 367 36 4 32 32 0 8 0 art_table 32 868 0 367 5 0 5 5 0 8 0 art_node 16 192 0 98 1 0 1 1 0 8 0 sysvmsgpl 40 50 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 80 0 58 1 0 1 1 0 8 0 shmpl 112 35 0 2 1 0 1 1 0 8 0 dirhash 1024 48 0 29 3 0 3 3 0 8 0 dino2pl 256 5281 0 3771 95 0 95 95 0 8 0 ffsino 288 5281 0 3771 109 0 109 109 0 8 0 nchpl 144 8230 0 6536 64 0 64 64 0 8 0 rtmask 32 11 0 11 5 4 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 28635 0 28635 4 3 1 2 0 8 1 percpumem 16 146 0 95 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 kstatmem 264 150 0 118 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 23 0 23 4 3 1 1 0 8 1 scxspl 216 29177 0 29176 13 12 1 8 1 8 0 plimitpl 152 503 0 486 1 0 1 1 0 8 0 sigapl 424 2475 0 2404 10 1 9 9 0 8 0 knotepl 120 587 0 0 17 0 17 17 0 8 0 kqueuepl 224 710 0 701 6 5 1 3 0 8 0 pipepl 336 337 0 310 8 5 3 8 0 8 0 fdescpl 520 2432 0 2401 3 0 3 3 0 8 0 filepl 160 15277 0 15054 33 18 15 19 0 8 3 lockfpl 104 841 0 838 3 2 1 2 0 8 0 lockfspl 48 254 0 251 1 0 1 1 0 8 0 sessionpl 144 44 0 34 1 0 1 1 0 8 0 pgrppl 48 88 0 70 1 0 1 1 0 8 0 ucredpl 104 2291 0 2278 1 0 1 1 0 8 0 zombiepl 144 2407 0 2404 1 0 1 1 0 8 0 processpl 1240 2475 0 2404 6 0 6 6 0 8 0 procpl 656 5730 0 5657 8 0 8 8 0 8 0 srpgc 96 12 0 12 4 3 1 1 0 8 1 sosppl 168 13 0 13 2 1 1 1 0 8 1 sockpl 728 3806 0 3752 40 33 7 19 0 8 1 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 48 0 0 2 0 2 2 0 8 0 mbufpl 256 352 0 0 22 0 22 22 0 8 0 bufpl 280 10883 0 4741 440 0 440 440 0 8 0 anonpl 32 9813 0 0 80 0 80 80 0 246 0 amapchunkpl 152 70651 0 70098 53 22 31 35 0 158 4 amappl16 200 6155 0 6069 41 31 10 15 0 8 1 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 156 0 143 1 0 1 1 0 8 0 amappl13 176 47 0 46 1 0 1 1 0 8 0 amappl12 168 3169 0 3138 4 1 3 3 0 8 0 amappl11 160 53 0 38 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 251 0 251 3 3 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 137 0 123 1 0 1 1 0 8 0 amappl6 120 238 0 233 1 0 1 1 0 8 0 amappl5 112 139 0 129 1 0 1 1 0 8 0 amappl4 104 405 0 383 1 0 1 1 0 8 0 amappl3 96 14692 0 14583 4 0 4 4 0 8 0 amappl2 88 855 0 785 2 0 2 2 0 8 0 amappl1 80 20386 0 19699 17 1 16 17 0 8 0 amappl 88 20040 0 19871 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 12 0 12 4 4 0 1 0 8 0 dma128 128 257 0 257 4 3 1 1 0 8 1 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 37 0 2 1 0 1 1 0 8 0 uaddrrnd 24 2432 0 2401 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2432 0 2401 1 0 1 1 0 8 0 vmmpekpl 168 20356 0 20297 3 0 3 3 0 8 0 vmmpepl 168 158111 0 155962 121 16 105 107 0 357 2 vmsppl 480 2431 0 2401 5 0 5 5 0 8 0 rwobjpl 72 47058 0 40000 131 0 131 131 0 8 0 pdppl 4096 4871 0 4802 137 62 75 85 0 8 6 pvpl 32 17913 0 0 145 0 145 145 0 265 0 pmappl 256 2431 0 2401 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 460 0 89 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0