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(ffff800001494000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800001494000) at if_detach+0x1bb sys/net/if.c:1200 tun_clone_destroy(ffff800001494000) at tun_clone_destroy+0x2d6 sys/net/if_tun.c:340 if_clone_destroy(ffff80003c4f7540) at if_clone_destroy+0x1d7 sys/net/if.c:1389 ifioctl(ffff80000149da88,80206979,ffff80003c4f7540,ffff8000333ff740) at ifioctl+0x5c5 sys/net/if.c:-1 sys_ioctl(ffff8000333ff740,ffff80003c4f7720,ffff80003c4f7670) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80003c4f7720) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4f7720) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xeef23fbac00, count: -8 ddb{1}> show registers rdi 0xffff800033400000 rsi 0x1a0e0 acpi_pdirpa+0x5f51 rbp 0xffff80003c4f7360 rbx 0x80206979 __kernel_virt_to_phys+0x206979 rdx 0xffff800033400000 rcx 0x1a0df acpi_pdirpa+0x5f50 rax 0xffffffff815dc1c9 bpfdetach+0xb9 r8 0 r9 0xffffffffffffffff r10 0x508749cb53a3950a r11 0x7422a4fbe5ce3ba5 r12 0xdeaf0002deaf4152 r13 0x800 r14 0xffff800001494000 r15 0xdeaf0002deaf4152 rip 0xffffffff815dc180 bpfdetach+0x70 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c4f7330 ss 0 bpfdetach+0x70: movq 0(%r15),%r12 ddb{1}> show proc PROC (syz-executor) tid=120906 pid=24582 tcnt=4 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=0xffff8000333ff9d0,0xffff8000333fe560 process=0xffff80003c014020 user=0xffff80003c4f2000, vmspace=0xfffffd806b70ad78 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41282 178325 96012 0 2 0 syz-executor 41282 92205 96012 0 3 0x4000080 fsleep syz-executor 41481 478038 84730 0 2 0 syz-executor 41481 188900 84730 0 2 0x4000000 syz-executor 80875 125257 51712 -1 2 0x10 syz-executor 80875 46939 51712 -1 3 0x4000090 pipewr syz-executor 80875 248563 51712 -1 3 0x4000090 fsleep syz-executor 24582 512451 2475 0 2 0 syz-executor *24582 120906 2475 0 7 0x4000000 syz-executor 24582 379011 2475 0 3 0x4000080 fsleep syz-executor 24582 39516 2475 0 3 0x4000080 fsleep syz-executor 29250 42150 30518 0 3 0x80 nanoslp syz-executor 29250 349281 30518 0 3 0x4000080 sbwait syz-executor 29250 210488 30518 0 3 0x4000080 kqsel syz-executor 20814 514275 20968 0 3 0x80 nanoslp syz-executor 20814 250003 20968 0 3 0x4000080 kqpoll syz-executor 20814 330941 20968 0 3 0x4000080 fsleep syz-executor 89630 318245 0 0 3 0x14280 nfsidl nfsio 19450 243571 0 0 3 0x14280 nfsidl nfsio 69902 476466 0 0 3 0x14280 nfsidl nfsio 80015 470028 0 0 3 0x14280 nfsidl nfsio 42288 411140 0 0 3 0x14280 nfsidl nfsio 31699 161892 0 0 3 0x14280 nfsidl nfsio 45086 16582 0 0 3 0x14280 nfsidl nfsio 59388 95613 0 0 3 0x14280 nfsidl nfsio 53558 331376 0 0 3 0x14280 nfsidl nfsio 1608 205767 0 0 3 0x14280 nfsidl nfsio 1329 342069 0 0 3 0x14280 nfsidl nfsio 25200 252360 0 0 3 0x14280 nfsidl nfsio 73219 515233 0 0 3 0x14280 nfsidl nfsio 26163 480294 0 0 3 0x14280 nfsidl nfsio 87058 372512 0 0 3 0x14280 nfsidl nfsio 82135 260000 0 0 3 0x14280 nfsidl nfsio 3650 66257 0 0 3 0x14280 nfsidl nfsio 6874 456981 0 0 3 0x14280 nfsidl nfsio 41618 237810 0 0 3 0x14280 nfsidl nfsio 66770 186219 0 0 3 0x14280 nfsidl nfsio 37919 260399 0 0 3 0x14200 bored sosplice 62848 499269 6232 0 2 0x2 syz-executor 27560 263719 6232 0 3 0x82 nanoslp syz-executor 2475 442743 6232 0 3 0x82 nanoslp syz-executor 30518 345004 6232 0 3 0x82 nanoslp syz-executor 20968 261763 6232 0 3 0x82 nanoslp syz-executor 51712 291946 6232 0 3 0x82 nanoslp syz-executor 96012 344783 6232 0 3 0x82 nanoslp syz-executor 84730 185816 6232 0 3 0x82 nanoslp syz-executor 6232 67249 2187 0 7 0x3 syz-executor 2187 362890 10876 0 3 0x10008a sigsusp ksh 10876 135976 8475 0 3 0x98 kqread sshd-session 8475 111209 99578 0 3 0x92 kqread sshd-session 56705 333028 1 0 3 0x100083 ttyin getty 99578 416658 1 0 3 0x88 kqread sshd 8069 258411 58591 74 3 0x1100092 bpf pflogd 58591 226651 1 0 3 0x80 sbwait pflogd 67214 247549 52563 73 3 0x1100090 kqread syslogd 52563 501822 1 0 3 0x100082 sbwait syslogd 12215 153626 1 0 3 0x100080 kqread resolvd 30625 488995 9083 77 3 0x100092 kqread dhcpleased 56986 458093 9083 77 3 0x100092 kqread dhcpleased 9083 296641 1 0 3 0x80 kqread dhcpleased 62369 225948 0 0 3 0x14200 bored smr 44268 260491 0 0 2 0x14200 zerothread 86613 506959 0 0 3 0x14200 aiodoned aiodoned 77968 487353 0 0 3 0x14200 syncer update 12534 296977 0 0 3 0x14200 cleaner cleaner 97710 371578 0 0 3 0x14200 reaper reaper 55838 226746 0 0 3 0x14200 pgdaemon pagedaemon 61195 330492 0 0 3 0x14200 bored viomb 88130 13385 0 0 3 0x40014200 acpi0 acpi0 70944 324806 0 0 3 0x40014200 idle1 32765 189501 0 0 3 0x14200 bored softnet7 5063 230569 0 0 3 0x14200 bored softnet6 51525 257785 0 0 3 0x14200 bored softnet5 44155 139309 0 0 3 0x14200 bored softnet4 96899 149614 0 0 3 0x14200 bored softnet3 28253 224053 0 0 3 0x14200 bored softnet2 37333 244511 0 0 3 0x14200 bored softnet1 45105 227901 0 0 3 0x14200 bored softnet0 21670 132295 0 0 3 0x14200 bored systqmp 4583 110156 0 0 3 0x14200 bored systq 7894 347931 0 0 3 0x14200 tmoslp softclockmp 27506 184039 0 0 3 0x40014200 tmoslp softclock 18922 90623 0 0 3 0x40014200 idle0 1 370285 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 24582 (syz-executor) thread 0xffff8000333ff740 (120906) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83980410) #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+0x1d7 sys/kern/kern_rwlock.c:298 #4 bpf_detachd+0x1b5 sys/net/bpf.c:345 #5 bpfclose+0x101 sys/net/bpf.c:417 #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:1794 #14 bpfdetach+0xa6 sys/net/bpf.c:-1 #15 if_detach+0x1bb sys/net/if.c:1200 #16 tun_clone_destroy+0x2d6 sys/net/if_tun.c:340 #17 if_clone_destroy+0x1d7 sys/net/if.c:1389 #18 ifioctl+0x5c5 sys/net/if.c:-1 exclusive rwlock clonelk r = 0 (0xffffffff83862138) #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+0x42b sys/kern/kern_rwlock.c:319 #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:748 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10206 11156K 11365K 166960K 11661 0 pcb 18 13K 14K 166960K 93 0 rtable 219 8K 8K 166960K 286 0 pf 36 17K 22K 166960K 79 0 ifaddr 44 7K 8K 166960K 61 0 ifgroup 57 2K 2K 166960K 91 0 sysctl 1 1K 9K 166960K 7 0 counters 72 37K 37K 166960K 104 0 ioctlops 0 0K 4K 166960K 1547 0 iov 0 0K 16K 166960K 21 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1386 87K 88K 166960K 1604 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 7 0 dirhash 15 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 342 0 sigio 0 0K 0K 166960K 2 0 proc 72 115K 164K 166960K 540 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 23 0 in_multi 99 7K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 2 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 402 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 247 159K 174K 166960K 4873 0 UVM aobj 10 6K 6K 166960K 10 0 pinsyscall 42 84K 98K 166960K 1420 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 18 0 NDP 13 0K 1K 166960K 40 0 temp 46 8676K 8772K 166960K 12842 0 kqueue 15 24K 30K 166960K 58 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 38 1 0 1 1 0 8 0 rtentry 176 99 0 3 5 0 5 5 0 8 0 unpcb 144 230 0 210 2 0 2 2 0 8 1 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 186 0 179 6 0 6 6 0 8 5 arp 128 11 0 0 1 0 1 1 0 8 0 inpcb 328 426 0 414 7 0 7 7 0 8 6 nd6 144 16 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 14 0 12 1 0 1 1 0 8 0 pppxif 1504 2 0 2 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 25 0 1 1 0 1 1 0 8 0 pfstkey 128 25 0 1 1 0 1 1 0 8 0 pfstate 384 25 0 1 3 0 3 3 0 8 0 pfrule 1344 23 0 17 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 456 0 12 29 0 29 29 0 8 1 art_table 40 458 0 12 5 0 5 5 0 8 0 art_node 32 99 0 13 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semapl 112 5 0 0 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 0 3 0 3 3 0 8 0 dino2pl 256 1937 0 426 95 0 95 95 0 8 0 ffsino 296 1937 0 426 117 0 117 117 0 8 0 nchpl 144 2423 0 726 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 2194 0 0 45 0 45 45 0 8 0 vnodes 216 2194 0 0 122 0 122 122 0 8 0 namei 1024 7606 0 7606 2 0 2 2 0 8 2 percpumem 16 67 0 16 1 0 1 1 0 8 0 kstatmem 264 50 0 22 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 10528 0 10528 6 2 4 4 1 8 4 plimitpl 152 53 0 35 1 0 1 1 0 8 0 sigapl 424 665 0 591 9 0 9 9 0 8 0 knotepl 120 290 0 0 9 0 9 9 0 8 0 kqueuepl 224 91 0 78 2 0 2 2 0 8 0 pipepl 344 154 0 126 6 0 6 6 0 8 3 fdescpl 528 622 0 591 3 0 3 3 0 8 0 filepl 160 3116 0 2889 17 0 17 17 0 8 7 lockfpl 104 102 0 100 1 0 1 1 0 8 0 lockfspl 48 51 0 49 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 292 0 278 1 0 1 1 0 8 0 zombiepl 144 592 0 591 1 0 1 1 0 8 0 processpl 1248 665 0 591 6 0 6 6 0 8 0 procpl 656 1045 0 960 8 0 8 8 0 8 0 sosppl 168 4 0 4 1 0 1 1 0 8 1 sockpl 752 704 0 668 11 0 11 11 0 8 7 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 1 mtagpl 96 73 0 0 2 0 2 2 0 8 0 mbufpl 256 234 0 0 15 0 15 15 0 8 0 bufpl 280 4445 0 124 309 0 309 309 0 8 0 anonpl 32 7470 0 0 61 0 61 61 0 246 0 amapchunkpl 152 15058 0 14546 30 3 27 28 0 158 6 amappl16 200 2641 0 2613 17 5 12 15 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 115 0 103 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1261 0 1230 3 1 2 2 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 18 0 18 1 1 0 1 0 8 0 amappl9 144 258 0 258 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 103 0 91 1 0 1 1 0 8 0 amappl6 120 180 0 177 1 0 1 1 0 8 0 amappl5 112 130 0 120 1 0 1 1 0 8 0 amappl4 104 297 0 275 1 0 1 1 0 8 0 amappl3 96 2665 0 2547 5 1 4 4 0 8 0 amappl2 88 635 0 574 2 0 2 2 0 8 0 amappl1 80 8890 0 8289 15 1 14 14 0 8 1 amappl 88 4170 0 3996 5 0 5 5 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 72 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 622 0 591 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 622 0 591 1 0 1 1 0 8 0 vmmpekpl 168 6752 0 6714 2 0 2 2 0 8 0 vmmpepl 168 45477 0 43505 100 1 99 99 0 357 10 vmsppl 488 621 0 591 5 1 4 5 0 8 0 rwobjpl 80 17400 0 14259 66 0 66 66 0 8 0 pdppl 4096 1252 0 1182 98 26 72 84 0 8 2 pvpl 32 14602 0 0 118 0 118 118 0 265 0 pmappl 256 621 0 591 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 279 0 29 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(ffffffff837f3ff0) 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(ffffffff83980208) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83980208) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsyscall(ffff80002a2a8018,4,18,ffff80002a2a7780) at ktrsyscall+0x2b3 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a2a8018,4,18,ffff80002a2a7780) at ktrsyscall+0x2b3 sys/kern/kern_ktrace.c:183 syscall(ffff80002a2a7780) at syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a2a7780) at syscall+0x2e6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73570588a120, count: -7 ddb{0}> machine ddbcpu 1 Stopped at bpfdetach+0x70: movq 0(%r15),%r12 ddb{1}> trace bpfdetach(ffff800001494000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800001494000) at if_detach+0x1bb sys/net/if.c:1200 tun_clone_destroy(ffff800001494000) at tun_clone_destroy+0x2d6 sys/net/if_tun.c:340 if_clone_destroy(ffff80003c4f7540) at if_clone_destroy+0x1d7 sys/net/if.c:1389 ifioctl(ffff80000149da88,80206979,ffff80003c4f7540,ffff8000333ff740) at ifioctl+0x5c5 sys/net/if.c:-1 sys_ioctl(ffff8000333ff740,ffff80003c4f7720,ffff80003c4f7670) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80003c4f7720) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4f7720) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xeef23fbac00, count: -8