login: kernel: protection fault trap, code=0 Stopped at bpfdetach+0x70: movq 0(%r15),%r12 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace bpfdetach(ffff80000149f000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff80000149f000) at if_detach+0x1bb sys/net/if.c:1222 tun_clone_destroy(ffff80000149f000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff80003c465690) at if_clone_destroy+0x1d5 sys/net/if.c:1411 ifioctl(ffff8000014acbe0,80206979,ffff80003c465690,ffff80003c4227f0) at ifioctl+0x59d sys/net/if.c:2088 sys_ioctl(ffff80003c4227f0,ffff80003c465870,ffff80003c4657c0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c465870) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c465870) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1a14d28a830, count: -8 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c4654b0 rbx 0x80206979 __kernel_virt_to_phys+0x206979 rdx 0 rcx 0xffff80003c4227f0 rax 0xffffffff837e0ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0xffffffffffffffff r10 0xc1577415d8fa501a r11 0xa9ec035d55601f18 r12 0xdeaf0002deafbead r13 0xffff80000149f600 r14 0xffff80000149f000 r15 0xdeaf0002deafbead rip 0xffffffff81c3e0f0 bpfdetach+0x70 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c465480 ss 0x10 bpfdetach+0x70: movq 0(%r15),%r12 ddb{0}> show proc PROC (syz-executor) tid=351277 pid=74397 tcnt=2 stat=onproc flags process=1000 proc=4080000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c423780 scnt=1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c422558,0xffff80003c423790 process=0xffff80003c425360 user=0xffff80003c460000, vmspace=0xfffffd806c1b9d70 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46402 287111 83521 0 2 0 syz-executor 46402 5161 83521 0 2 0x4000000 syz-executor 64061 207400 41221 0 2 0 syz-executor 64061 205092 41221 0 3 0x4000080 fsleep syz-executor *74397 351277 27669 0 7 0x4081000 syz-executor 74397 265557 27669 0 3 0x4003000 suspend syz-executor 37389 132245 1 0 3 0x80 nanoslp init 12827 14303 27517 0 3 0x80 nanoslp syz-executor 12827 193476 27517 0 3 0x4000080 sbwait syz-executor 12827 355404 27517 0 3 0x4000080 fsleep syz-executor 53902 504285 10313 0 3 0x90 nanoslp syz-executor 53902 466215 10313 0 3 0x4000090 netcon syz-executor 53902 155448 10313 0 3 0x4000090 fsleep syz-executor 27669 258968 16715 0 3 0x82 nanoslp syz-executor 43507 516838 59364 -1 3 0x3010 suspend syz-executor 43507 126694 59364 -1 2 0x4081010 syz-executor 63865 236189 0 0 3 0x14200 acct acct 83521 91263 16715 0 3 0x82 nanoslp syz-executor 82528 477518 41467 0 3 0x100082 sbwait ndp 41467 309125 24170 0 3 0x10008a sigsusp sh 27517 391668 16715 0 3 0x82 nanoslp syz-executor 59364 523250 16715 0 3 0x82 wait syz-executor 41221 291214 16715 0 3 0x82 nanoslp syz-executor 33545 7825 16715 0 3 0x82 nanoslp syz-executor 10313 240697 16715 0 2 0x2 syz-executor 24170 138369 16715 0 3 0x82 wait syz-executor 16715 213636 26653 0 3 0x82 kqread syz-executor 26653 295609 99743 0 3 0x10008a sigsusp ksh 99743 296790 39221 0 3 0x98 kqread sshd-session 39221 156705 6991 0 3 0x92 kqread sshd-session 6991 516900 1 0 3 0x88 kqread sshd 39356 48521 39075 74 3 0x1100092 bpf pflogd 39075 261427 1 0 3 0x80 sbwait pflogd 80000 22490 19535 73 3 0x1100090 kqread syslogd 19535 270908 1 0 3 0x100082 sbwait syslogd 69654 270406 1 0 3 0x100080 kqread resolvd 98105 424742 30666 77 3 0x100092 kqread dhcpleased 39881 503948 30666 77 3 0x100092 kqread dhcpleased 30666 304912 1 0 3 0x80 kqread dhcpleased 46353 502146 0 0 3 0x14200 bored smr 25540 150169 0 0 2 0x14200 zerothread 71766 226251 0 0 3 0x14200 aiodoned aiodoned 76681 483532 0 0 3 0x14200 syncer update 59954 238311 0 0 3 0x14200 cleaner cleaner 75989 271962 0 0 3 0x14200 reaper reaper 59903 157321 0 0 3 0x14200 pgdaemon pagedaemon 59277 26550 0 0 3 0x14200 bored viomb 53714 421962 0 0 3 0x40014200 acpi0 acpi0 81696 241086 0 0 7 0x40014200 idle1 53325 165689 0 0 3 0x14200 bored softnet1 33392 167080 0 0 3 0x14200 bored softnet0 25335 431637 0 0 3 0x14200 bored systqmp 61615 317614 0 0 3 0x14200 bored systq 34494 114968 0 0 3 0x14200 tmoslp softclockmp 61015 42474 0 0 3 0x40014200 tmoslp softclock 62126 42097 0 0 3 0x40014200 idle0 1 47527 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 46402 (syz-executor) thread 0xffff80003c423cb0 (5161) exclusive rwlock fdlock r = 0 (0xffff80003affb0f0) #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 sys_socket+0x203 sys/kern/uipc_syscalls.c:106 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #4 Xsyscall+0x128 Process 74397 (syz-executor) thread 0xffff80003c4227f0 (351277) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83971cc8) #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 bpf_detachd+0x1c2 sys/net/bpf.c:345 #5 bpfclose+0x101 sys/net/bpf.c:417 #6 spec_close+0x466 sys/kern/spec_vnops.c:-1 #7 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #8 vclean+0x20f sys/kern/vfs_subr.c:1084 #9 vgonel+0xb0 sys/kern/vfs_subr.c:1186 #10 vop_generic_revoke+0x3ea 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+0x155 sys/net/bpf.c:1794 #14 bpfdetach+0xa6 sys/net/bpf.c:-1 #15 if_detach+0x1bb sys/net/if.c:1222 #16 tun_clone_destroy+0x2ce sys/net/if_tun.c:340 #17 if_clone_destroy+0x1d5 sys/net/if.c:1411 #18 ifioctl+0x59d sys/net/if.c:2088 exclusive rwlock clonelk r = 0 (0xffffffff837d9e18) #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:2088 #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 43507 (syz-executor) thread 0xffff80003b408d18 (126694) exclusive rrwlock inode r = 0 (0xfffffd806e9bf6f0) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10215 11171K 11309K 166960K 12406 0 pcb 21 15K 16K 166960K 255 0 rtable 181 8K 9K 166960K 925 0 pf 38 18K 67485K 166960K 139 0 ifaddr 35 5K 8K 166960K 98 0 ifgroup 57 2K 2K 166960K 159 0 sysctl 4 1K 9K 166960K 16 0 counters 72 37K 37K 166960K 426 0 ioctlops 0 0K 4K 166960K 1943 0 iov 0 0K 16K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1428 90K 90K 166960K 2524 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 103 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 97K 166960K 917 0 sigio 0 0K 0K 166960K 10 0 proc 63 99K 164K 166960K 708 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 163 0 in_multi 69 5K 7K 166960K 151 0 ether_multi 1 0K 0K 166960K 8 0 mrt 0 0K 0K 166960K 20 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 509 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 253 167K 188K 166960K 10167 0 UVM aobj 17 8K 10K 166960K 21 0 pinsyscall 44 88K 109K 166960K 2136 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 53 0 NDP 15 0K 2K 166960K 65 0 temp 75 8660K 8724K 166960K 54070 0 kqueue 13 20K 30K 166960K 172 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 164 0 160 3 2 1 3 0 8 0 rtentry 176 355 0 286 6 0 6 6 0 8 0 unpcb 144 815 0 792 11 9 2 10 0 8 1 syncache 336 10 0 10 4 3 1 1 0 8 1 tcpqe 32 6 0 6 2 1 1 1 0 8 1 tcpcb 736 352 0 339 14 12 2 7 0 8 0 arp 136 90 0 76 1 0 1 1 0 8 0 inpcb 328 1119 0 1095 15 10 5 7 0 8 2 nd6 152 32 0 15 1 0 1 1 0 8 0 pkpcb 40 5 0 4 2 1 1 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 164 0 162 2 1 1 1 0 8 0 pppxif 1504 72 0 72 3 2 1 1 0 8 1 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 19 0 13 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 70 0 28 1 0 1 1 0 8 0 pfstkey 128 72 0 30 2 0 2 2 0 8 0 pfstate 384 70 0 29 5 0 5 5 0 8 0 pfrule 1344 27 0 22 2 1 1 2 0 8 0 rttmr 136 6 0 6 3 3 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 895 0 608 31 8 23 31 0 8 0 art_table 40 897 0 608 5 0 5 5 0 8 0 art_node 32 354 0 292 3 0 3 3 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 99 0 89 1 0 1 1 0 8 0 shmpl 112 14 0 3 1 0 1 1 0 8 0 dirhash 1024 36 0 19 3 0 3 3 0 8 0 dino2pl 256 3485 0 1975 96 0 96 96 0 8 0 ffsino 296 3485 0 1975 118 0 118 118 0 8 0 nchpl 144 4694 0 2983 64 0 64 64 0 8 0 rtmask 32 5 0 4 3 2 1 1 0 8 0 vnodes 216 4029 0 0 224 0 224 224 0 8 0 namei 1024 16467 0 16467 2 1 1 2 0 8 1 percpumem 16 228 0 177 1 0 1 1 0 8 0 vcpupl 3968 3 0 0 1 0 1 1 0 8 0 vmpool 840 4 0 1 1 0 1 1 0 8 0 kstatmem 264 94 0 64 4 1 3 3 0 8 0 scxspl 216 22159 0 22159 11 9 2 8 1 8 2 plimitpl 152 340 0 323 1 0 1 1 0 8 0 sigapl 424 1238 0 1188 7 0 7 7 0 8 0 knotepl 120 521 0 0 16 0 16 16 0 8 0 kqueuepl 224 338 0 328 4 3 1 3 0 8 0 pipepl 344 217 0 190 3 0 3 3 0 8 0 fdescpl 528 1215 0 1182 3 0 3 3 0 8 0 filepl 160 8455 0 8217 26 14 12 21 0 8 0 lockfpl 104 402 0 398 1 0 1 1 0 8 0 lockfspl 48 150 0 146 1 0 1 1 0 8 0 sessionpl 144 33 0 25 1 0 1 1 0 8 0 pgrppl 48 50 0 34 1 0 1 1 0 8 0 ucredpl 104 2100 0 2084 1 0 1 1 0 8 0 zombiepl 144 1436 0 1434 1 0 1 1 0 8 0 processpl 1232 1238 0 1188 5 0 5 5 0 8 1 procpl 664 2483 0 2424 6 0 6 6 0 8 0 sosppl 176 6 0 5 1 0 1 1 0 8 0 sockpl 752 2160 0 2107 43 35 8 28 0 8 2 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 1 15 16 0 8 0 mcl2k 2048 63 0 0 7 0 7 7 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1836 0 0 115 0 115 115 0 8 0 bufpl 280 8274 0 2136 439 0 439 439 0 8 0 anonpl 32 11594 0 0 94 0 94 94 0 246 0 amapchunkpl 152 34429 0 33911 37 8 29 30 0 158 8 amappl16 200 3998 0 3850 41 24 17 28 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 13 0 12 1 0 1 1 0 8 0 amappl13 176 454 0 452 1 0 1 1 0 8 0 amappl12 168 1613 0 1570 3 0 3 3 0 8 0 amappl11 160 3 0 3 1 1 0 1 0 8 0 amappl10 152 49 0 34 1 0 1 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 87 0 86 1 0 1 1 0 8 0 amappl6 120 313 0 297 1 0 1 1 0 8 0 amappl5 112 86 0 75 1 0 1 1 0 8 0 amappl4 104 466 0 434 1 0 1 1 0 8 0 amappl3 96 5868 0 5765 4 1 3 3 0 8 0 amappl2 88 1374 0 1297 2 0 2 2 0 8 0 amappl1 80 14341 0 13736 16 1 15 15 0 8 1 amappl 88 9214 0 9041 5 0 5 5 0 92 0 uvmvnodes 80 4029 0 0 83 0 83 83 0 8 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 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 39 0 39 2 2 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 20 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1215 0 1182 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1215 0 1182 1 0 1 1 0 8 0 vmmpekpl 168 11875 0 11832 4 1 3 3 0 8 0 vmmpepl 168 85594 0 83491 119 8 111 111 0 357 14 vmsppl 488 1214 0 1182 5 0 5 5 0 8 0 rwobjpl 80 29529 0 24415 112 1 111 111 0 8 0 pdppl 4096 2446 0 2369 112 33 79 88 0 8 2 pvpl 32 18882 0 0 154 1 153 153 0 265 0 pmappl 256 1218 0 1183 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 412 0 62 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace bpfdetach(ffff80000149f000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff80000149f000) at if_detach+0x1bb sys/net/if.c:1222 tun_clone_destroy(ffff80000149f000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:340 if_clone_destroy(ffff80003c465690) at if_clone_destroy+0x1d5 sys/net/if.c:1411 ifioctl(ffff8000014acbe0,80206979,ffff80003c465690,ffff80003c4227f0) at ifioctl+0x59d sys/net/if.c:2088 sys_ioctl(ffff80003c4227f0,ffff80003c465870,ffff80003c4657c0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c465870) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c465870) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1a14d28a830, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5