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(ffff800001486000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800001486000) at if_detach+0x1bb sys/net/if.c:1201 tun_clone_destroy(ffff800001486000) at tun_clone_destroy+0x2d6 sys/net/if_tun.c:340 if_clone_destroy(ffff80003c423d80) at if_clone_destroy+0x1d7 sys/net/if.c:1390 ifioctl(ffff8000014a3c88,80206979,ffff80003c423d80,ffff8000ffff1c50) at ifioctl+0x5c5 sys/net/if.c:-1 sys_ioctl(ffff8000ffff1c50,ffff80003c423f60,ffff80003c423eb0) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80003c423f60) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c423f60) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x31e55864050, count: -8 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c423ba0 rbx 0x80206979 __kernel_virt_to_phys+0x206979 rdx 0 rcx 0xffff8000ffff1c50 rax 0xffffffff8388bff0 cpu_info_full_primary+0x1ff0 r8 0x30 r9 0 r10 0x65e7c88c2f289e59 r11 0xc20d3b98a22b3a15 r12 0xdeaf0002deaf4152 r13 0x800 r14 0xffff800001486000 r15 0xdeaf0002deaf4152 rip 0xffffffff810275d0 bpfdetach+0x70 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c423b70 ss 0x10 bpfdetach+0x70: movq 0(%r15),%r12 ddb{0}> show proc PROC (syz-executor) tid=51074 pid=95667 tcnt=4 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=0xffff8000ffff19c0,0xffff8000ffff14b0 process=0xffff8000fffe9388 user=0xffff80003c41f000, vmspace=0xfffffd806b9f51f8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4692 402159 11054 0 2 0 syz-executor 4692 18715 11054 0 3 0x4000080 ttyin syz-executor 95667 241281 40262 0 2 0xc80 syz-executor 95667 194022 40262 0 3 0x4000080 fsleep syz-executor *95667 51074 40262 0 7 0x4000000 syz-executor 95667 80404 40262 0 3 0x4000080 fsleep syz-executor 60456 442434 95078 0 2 0xc80 syz-executor 60456 185458 95078 0 3 0x4000080 ttyin syz-executor 60456 39117 95078 0 3 0x4000080 kqpoll syz-executor 60456 415274 95078 0 2 0x4000000 syz-executor 24567 10544 22082 0 3 0x3000 suspend syz-executor 24567 45802 22082 0 2 0x4081000 syz-executor 41677 425390 1 0 3 0x100083 ttyin getty 8650 314145 0 0 3 0x14200 bored sosplice 59810 151951 15 0 3 0x100082 sbwait ndp 15 41757 74077 0 3 0x10008a sigsusp sh 49114 277229 62268 0 2 0xc82 syz-executor 22082 316976 62268 0 3 0x82 wait syz-executor 74077 132963 62268 0 3 0x82 wait syz-executor 95078 433016 62268 0 3 0x82 nanoslp syz-executor 40262 426107 62268 0 2 0xc82 syz-executor 54604 154621 62268 0 2 0xc82 syz-executor 11054 344605 62268 0 2 0xc82 syz-executor 2605 508178 62268 0 2 0x2 syz-executor 62268 402477 69246 0 3 0x82 kqread syz-executor 69246 333791 73162 0 3 0x10008a sigsusp ksh 73162 320141 91477 0 3 0x98 kqread sshd-session 91477 430039 95047 0 3 0x92 kqread sshd-session 95047 254477 1 0 3 0x88 kqread sshd 65263 273197 85234 74 3 0x1100092 bpf pflogd 85234 382277 1 0 3 0x80 sbwait pflogd 42002 297943 96989 73 3 0x1100090 kqread syslogd 96989 124558 1 0 3 0x100082 sbwait syslogd 89335 522067 1 0 3 0x100080 kqread resolvd 65650 283599 88616 77 3 0x100092 kqread dhcpleased 30788 211124 88616 77 2 0x100092 dhcpleased 88616 333968 1 0 3 0x80 kqread dhcpleased 64123 42102 0 0 3 0x14200 bored smr 12246 162608 0 0 3 0x14200 pgzero zerothread 65452 205449 0 0 3 0x14200 aiodoned aiodoned 57666 338051 0 0 3 0x14200 syncer update 75497 378417 0 0 3 0x14200 cleaner cleaner 4142 13731 0 0 3 0x14200 reaper reaper 38687 318540 0 0 3 0x14200 pgdaemon pagedaemon 37458 421833 0 0 3 0x14200 bored viomb 95278 422466 0 0 3 0x40014200 acpi0 acpi0 9703 509771 0 0 3 0x40014200 idle1 89461 264312 0 0 3 0x14200 bored softnet3 52185 415234 0 0 3 0x14200 bored softnet2 96806 395297 0 0 3 0x14200 bored softnet1 2051 431728 0 0 3 0x14200 tqbarend softnet0 21569 479326 0 0 3 0x14200 smrbar systqmp 80102 14938 0 0 3 0x14200 bored systq 57110 21155 0 0 3 0x14200 tmoslp softclockmp 16318 440708 0 0 2 0x40014200 softclock 46979 331083 0 0 3 0x40014200 idle0 1 310302 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 95667 (syz-executor) thread 0xffff8000ffff1c50 (51074) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839f7030) #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 lf_purgelocks+0x2f sys/kern/vfs_lockf.c:731 #5 vgonel+0x497 sys/kern/vfs_subr.c:1223 #6 vop_generic_revoke+0x3e6 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+0x140 sys/net/bpf.c:1794 #10 bpfdetach+0xa6 sys/net/bpf.c:-1 #11 if_detach+0x1bb sys/net/if.c:1201 #12 tun_clone_destroy+0x2d6 sys/net/if_tun.c:340 #13 if_clone_destroy+0x1d7 sys/net/if.c:1390 #14 ifioctl+0x5c5 sys/net/if.c:-1 #15 sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 #16 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #16 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 #17 Xsyscall+0x128 exclusive rwlock clonelk r = 0 (0xffffffff838687a8) #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:748 #6 Xsyscall+0x128 Process 24567 (syz-executor) thread 0xffff8000fffe6cf8 (45802) exclusive rrwlock inode r = 0 (0xfffffd80686c2880) #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 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 2051 (softnet0) thread 0xffff8000ffffecd0 (431728) shared rwlock softnet0 r = 0 (0xffff80000002c078) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 Process 21569 (systqmp) thread 0xffff8000ffffea40 (479326) shared rwlock systqmp r = 0 (0xffffffff838b7788) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 11148K 11367K 166960K 11613 0 pcb 17 13K 13K 166960K 78 0 rtable 224 7K 8K 166960K 371 0 pf 35 17K 18K 166960K 68 0 ifaddr 42 7K 7K 166960K 58 0 ifgroup 58 2K 2K 166960K 88 0 sysctl 4 1K 9K 166960K 11 0 counters 70 37K 37K 166960K 96 0 ioctlops 0 0K 4K 166960K 1609 0 iov 1 0K 4K 166960K 10 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1345 85K 85K 166960K 1617 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 12 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 392 0 sigio 0 0K 0K 166960K 8 0 proc 72 91K 152K 166960K 560 0 subproc 72 4K 4K 166960K 74 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 44 0 in_multi 96 7K 7K 166960K 113 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 390 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 242 169K 179K 166960K 5352 0 UVM aobj 10 2K 2K 166960K 11 0 pinsyscall 43 86K 102K 166960K 1484 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 19 0 NDP 12 0K 1K 166960K 38 0 temp 48 8677K 8741K 166960K 14009 0 kqueue 15 24K 28K 166960K 79 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 51 0 47 1 0 1 1 0 8 0 rtentry 176 118 0 17 6 0 6 6 0 8 0 unpcb 144 162 0 144 1 0 1 1 0 8 0 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpcb 736 124 0 120 7 0 7 7 0 8 6 arp 128 20 0 1 1 0 1 1 0 8 0 inpcb 328 390 0 381 7 0 7 7 0 8 6 nd6 144 26 0 1 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 10 0 9 1 0 1 1 0 8 0 pppxif 1504 1 0 0 1 0 1 1 0 8 0 pffrag 232 4 0 1 1 0 1 1 0 482 0 pffrnode 88 4 0 1 1 0 1 1 0 8 0 pffrent 40 5 0 2 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 38 0 1 1 0 1 1 0 8 0 pfstkey 128 38 0 1 2 0 2 2 0 8 0 pfstate 384 38 0 1 4 0 4 4 0 8 0 pfrule 1344 86 0 81 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 466 0 45 29 0 29 29 0 8 1 art_table 40 467 0 45 5 0 5 5 0 8 0 art_node 32 118 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 4 1 0 1 1 0 8 0 semapl 112 8 0 1 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2096 0 588 95 0 95 95 0 8 0 ffsino 288 2096 0 588 109 0 109 109 0 8 0 nchpl 144 2656 0 961 63 0 63 63 0 8 0 uvmvnodes 80 2291 0 0 47 0 47 47 0 8 0 vnodes 216 2291 0 0 128 0 128 128 0 8 0 namei 1024 8642 0 8642 4 3 1 2 0 8 1 percpumem 16 63 0 13 1 0 1 1 0 8 0 kstatmem 264 46 0 19 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 14602 0 14602 10 4 6 8 1 8 6 plimitpl 152 90 0 71 1 0 1 1 0 8 0 sigapl 424 694 0 643 7 0 7 7 0 8 0 knotepl 120 323 0 0 10 0 10 10 0 8 0 kqueuepl 224 113 0 100 1 0 1 1 0 8 0 pipepl 336 121 0 93 3 0 3 3 0 8 0 fdescpl 520 675 0 644 3 0 3 3 0 8 0 filepl 160 3391 0 3158 18 0 18 18 0 8 7 lockfpl 104 130 0 124 1 0 1 1 0 8 0 lockfspl 48 64 0 59 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 573 0 560 1 0 1 1 0 8 0 zombiepl 144 809 0 806 2 1 1 1 0 8 0 processpl 1240 694 0 643 6 1 5 5 0 8 0 procpl 656 1174 0 1115 6 0 6 6 0 8 0 sosppl 168 2 0 2 2 1 1 1 0 8 1 sockpl 728 614 0 583 10 0 10 10 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 47 0 0 6 0 6 6 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 319 0 0 20 0 20 20 0 8 0 bufpl 280 6934 0 792 439 0 439 439 0 8 0 anonpl 32 13700 0 0 111 0 111 111 0 246 0 amapchunkpl 152 16491 0 16023 29 4 25 27 0 158 3 amappl16 200 3446 0 3224 37 24 13 34 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 114 0 101 1 0 1 1 0 8 0 amappl13 176 9 0 8 1 0 1 1 0 8 0 amappl12 168 1322 0 1290 3 1 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 8 0 7 1 0 1 1 0 8 0 amappl9 144 274 0 273 2 1 1 1 0 8 0 amappl8 136 62 0 60 1 0 1 1 0 8 0 amappl7 128 105 0 92 1 0 1 1 0 8 0 amappl6 120 173 0 169 1 0 1 1 0 8 0 amappl5 112 122 0 113 1 0 1 1 0 8 0 amappl4 104 318 0 297 1 0 1 1 0 8 0 amappl3 96 3046 0 2940 4 0 4 4 0 8 0 amappl2 88 658 0 592 2 0 2 2 0 8 0 amappl1 80 9744 0 9119 16 1 15 15 0 8 0 amappl 88 4620 0 4457 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 10 0 1 1 0 1 1 0 8 0 uaddrrnd 24 675 0 644 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 675 0 644 1 0 1 1 0 8 0 vmmpekpl 168 7290 0 7246 4 1 3 3 0 8 0 vmmpepl 168 50610 0 48454 117 0 117 117 0 357 18 vmsppl 480 674 0 643 5 0 5 5 0 8 0 rwobjpl 72 19420 0 15960 66 0 66 66 0 8 1 pdppl 4096 1357 0 1286 103 30 73 85 0 8 2 pvpl 32 21855 0 0 178 1 177 177 0 265 0 pmappl 256 674 0 643 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 405 0 36 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace bpfdetach(ffff800001486000) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800001486000) at if_detach+0x1bb sys/net/if.c:1201 tun_clone_destroy(ffff800001486000) at tun_clone_destroy+0x2d6 sys/net/if_tun.c:340 if_clone_destroy(ffff80003c423d80) at if_clone_destroy+0x1d7 sys/net/if.c:1390 ifioctl(ffff8000014a3c88,80206979,ffff80003c423d80,ffff8000ffff1c50) at ifioctl+0x5c5 sys/net/if.c:-1 sys_ioctl(ffff8000ffff1c50,ffff80003c423f60,ffff80003c423eb0) at sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 syscall(ffff80003c423f60) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c423f60) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x31e55864050, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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(ffffffff839f6e28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839f6e28) at __mp_lock+0x192 sys/kern/kern_lock.c:165 exit1(ffff8000ffff1730,0,0,1) at exit1+0x728 sys/kern/kern_exit.c:260 sys_exit(ffff8000ffff1730,ffff80002a2ecf40,ffff80002a2ece90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2ecf40) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2ecf40) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71019bb08a60, count: -8