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(ffff800001592800) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800001592800) at if_detach+0x12b sys/net/if.c:1288 tun_clone_destroy(ffff800001592800) at tun_clone_destroy+0x2ce sys/net/if_tun.c:347 if_clone_destroy(ffff80002a2e05f0) at if_clone_destroy+0x205 sys/net/if.c:1478 ifioctl(ffff8000016f4d58,80206979,ffff80002a2e05f0,ffff80003c429798) at ifioctl+0x59d sys/net/if.c:2159 sys_ioctl(ffff80003c429798,ffff80002a2e07d0,ffff80002a2e0720) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002a2e07d0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2e07d0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb73a5787d0, count: -8 ddb{0}> show registers rdi 0xffff80002b3c1000 rsi 0x1a286 acpi_pdirpa+0x60f7 rbp 0xffff80002a2e0410 rbx 0x80206979 __kernel_virt_to_phys+0x206979 rdx 0xffff80002b3c1000 rcx 0x1a285 acpi_pdirpa+0x60f6 rax 0xffffffff82337d29 bpfdetach+0xb9 r8 0xffffffffffffffff r9 0 r10 0x6738465a205cbd81 r11 0x3f3b4d3b5b3108e5 r12 0xdeaf0002deaf4152 r13 0xffff800001592e00 r14 0xffff800001592800 r15 0xdeaf0002deaf4152 rip 0xffffffff82337ce0 bpfdetach+0x70 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a2e03e0 ss 0x10 bpfdetach+0x70: movq 0(%r15),%r12 ddb{0}> show proc PROC (syz-executor) tid=26620 pid=86172 tcnt=2 stat=onproc flags process=1000 proc=4080000 runpri=32, usrpri=81, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c456ab8 scnt=1 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c456ab8,0xffff80003c428050 process=0xffff8000fffece88 user=0xffff80002a2db000, vmspace=0xfffffd800cfdfd78 estcpu=31, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 85401 345349 43095 0 3 0x82 sysctllk sshd-session 98507 492635 40763 0 2 0 syz-executor 98507 518801 40763 0 3 0x4000080 fsleep syz-executor 64035 431472 63950 0 2 0 syz-executor 64035 441565 63950 0 3 0x4000080 fsleep syz-executor 45498 341923 70534 0 2 0 syz-executor 45498 294801 70534 0 3 0x4000080 sysctllk syz-executor 45498 445562 70534 0 3 0x4000080 fsleep syz-executor 86172 398674 48770 0 3 0x3000 suspend syz-executor *86172 26620 48770 0 7 0x4081000 syz-executor 49630 209137 43095 0 3 0x82 sysctllk sshd-session 31401 168457 43095 0 3 0x82 sysctllk sshd-session 16050 497707 52422 0 3 0x82 sysctllk syz-executor 24056 464672 43095 0 3 0x82 sysctllk sshd-session 97704 268148 43095 0 3 0x82 sysctllk sshd-session 77878 278000 1 0 3 0x81000 vmmapbsy syz-executor 77878 84863 1 0 3 0x4081000 vmmapbsy syz-executor 77878 491363 1 0 3 0x4081000 fltagain2 syz-executor 77878 176677 1 0 3 0x4081000 fltagain2 syz-executor 77878 462357 1 0 3 0x4003000 suspend syz-executor 48770 334468 52422 0 3 0x82 nanoslp syz-executor 70534 515238 52422 0 3 0x82 nanoslp syz-executor 66113 311232 1 0 3 0x100083 ttyopn getty 74830 166412 52422 0 3 0x82 nanoslp syz-executor 63950 509200 52422 0 2 0x3 syz-executor 58085 5774 52422 0 2 0x10000082 syz-executor 40763 354104 52422 0 3 0x82 nanoslp syz-executor 80227 302280 52422 0 2 0x3 syz-executor 52422 189677 82162 0 3 0x82 kqread syz-executor 82162 52690 54558 0 3 0x10008a sigsusp ksh 54558 450536 73002 0 3 0x98 kqread sshd-session 73002 407051 43095 0 3 0x92 kqread sshd-session 43095 393939 1 0 3 0x88 kqread sshd 1033 265093 73742 74 3 0x1100092 bpf pflogd 73742 453165 1 0 3 0x80 sbwait pflogd 87378 432648 90198 73 3 0x1100090 kqread syslogd 90198 44058 1 0 3 0x100082 sbwait syslogd 39099 53098 1 0 3 0x100080 kqread resolvd 15811 125451 49613 77 3 0x100092 kqread dhcpleased 94217 243981 49613 77 3 0x100092 kqread dhcpleased 49613 305429 1 0 3 0x80 kqread dhcpleased 59322 407990 0 0 3 0x14200 bored smr 34094 385067 0 0 2 0x14200 zerothread 35559 174194 0 0 3 0x14200 aiodoned aiodoned 9499 40287 0 0 3 0x14200 syncer update 86597 226558 0 0 3 0x14200 cleaner cleaner 43355 296871 0 0 3 0x14200 reaper reaper 67784 395640 0 0 3 0x14200 pgdaemon pagedaemon 17954 424283 0 0 3 0x14200 bored viomb 37813 100180 0 0 3 0x40014200 acpi0 acpi0 34911 73170 0 0 7 0x40014200 idle1 96238 311270 0 0 3 0x14200 bored softnet1 74342 83854 0 0 3 0x14200 bored softnet0 97073 226904 0 0 3 0x14200 bored systqmp 81782 313623 0 0 3 0x14200 bored systq 38589 356741 0 0 3 0x14200 tmoslp softclockmp 69088 524218 0 0 3 0x40014200 tmoslp softclock 49486 41650 0 0 3 0x40014200 idle0 1 382492 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 86172 (syz-executor) thread 0xffff80003c429798 (26620) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83912b80) #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:369 #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:1216 #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+0x12b sys/net/if.c:1288 #12 tun_clone_destroy+0x2ce sys/net/if_tun.c:347 #13 if_clone_destroy+0x205 sys/net/if.c:1478 #14 ifioctl+0x59d sys/net/if.c:2159 #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:775 #17 Xsyscall+0x128 exclusive rwlock clonelk r = 0 (0xffffffff8384cc48) #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+0x93 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2159 #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:775 #6 Xsyscall+0x128 Process 77878 (syz-executor) thread 0xffff80003c428d38 (84863) exclusive rrwlock inode r = 0 (0xfffffd806ea7ca58) #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:775 #9 Xsyscall+0x128 Process 77878 (syz-executor) thread 0xffff80003c428aa0 (176677) exclusive rwlock sysctllk r = 0 (0xffffffff8387eb88) #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 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:191 #3 icmp_sysctl+0xa4 sys/netinet/ip_icmp.c:913 #4 net_sysctl+0x64e sys/kern/uipc_domain.c:260 #5 sys_sysctl+0x3e5 sys/kern/kern_sysctl.c:-1 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #7 Xsyscall+0x128 Process 63950 (syz-executor) thread 0xffff80002a274fa8 (509200) exclusive rrwlock inode r = 0 (0xfffffd807a4cff08) #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 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688 #7 ktrstruct+0x197 ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] #7 ktrstruct+0x197 sys/kern/kern_ktrace.c:314 #8 sys_nanosleep+0x108 sys/kern/kern_time.c:294 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #10 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11111 12179K 13213K 166960K 14639 0 pcb 17 16K 18K 166960K 522 0 rtable 208 12K 13K 166960K 695 0 pf 44 19K 82K 166960K 207 0 ifaddr 38 6K 8K 166960K 149 0 ifgroup 68 2K 3K 166960K 260 0 sysctl 4 1K 9K 166960K 22 0 counters 76 37K 38K 166960K 294 0 ioctlops 0 0K 4K 166960K 1939 0 iov 0 0K 28K 166960K 120 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1422 89K 90K 166960K 3020 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 30 0 VM map 2 1K 1K 166960K 2 0 sem 15 0K 1K 166960K 211 0 dirhash 12 2K 2K 166960K 57 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 54K 240K 166960K 2037 0 sigio 0 0K 0K 166960K 71 0 proc 72 115K 196K 166960K 856 0 subproc 72 4K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 855 0 in_multi 68 5K 7K 166960K 214 0 ether_multi 1 0K 0K 166960K 19 0 mrt 1 0K 0K 166960K 22 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 640 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 297 188K 194K 166960K 20498 0 UVM aobj 40 20K 20K 166960K 51 0 pinsyscall 51 102K 104K 166960K 3315 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 164 0 NDP 15 0K 2K 166960K 108 0 temp 80 8688K 8810K 166960K 110659 0 kqueue 14 22K 30K 166960K 385 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 120 262 0 259 4 3 1 3 0 8 0 rtentry 176 198 0 124 6 0 6 6 0 8 0 unpcb 144 1350 0 1323 17 14 3 6 0 8 1 syncache 336 15 0 15 6 5 1 1 0 8 1 tcpqe 32 5 0 5 3 3 0 1 0 8 0 tcpcb 736 824 0 810 20 18 2 7 0 8 0 arp 136 30 0 18 1 0 1 1 0 8 0 inpcb 328 2605 0 2584 37 34 3 12 0 8 1 nd6 152 42 0 22 1 0 1 1 0 8 0 pkpcb 40 13 0 13 6 5 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1192 90 0 89 5 4 1 1 0 8 0 pppxif 1504 10 0 10 5 5 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 14 0 11 1 0 1 1 0 482 0 pffrnode 88 13 0 10 1 0 1 1 0 8 0 pffrent 40 23 0 20 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 6 0 4 1 0 1 1 0 8 0 pfstate 448 3 0 2 1 0 1 1 0 8 0 rttmr 136 7 0 7 3 2 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 960 0 576 39 10 29 33 0 8 1 art_table 40 963 0 576 6 1 5 6 0 8 0 art_node 32 194 0 130 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 8 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 200 0 187 1 0 1 1 0 8 0 shmpl 112 34 0 6 1 0 1 1 0 8 0 dirhash 1024 48 0 31 3 0 3 3 0 8 0 dino2pl 256 5309 0 3790 96 0 96 96 0 8 0 ffsino 296 5309 0 3790 118 0 118 118 0 8 0 nchpl 144 8105 0 6378 64 0 64 64 0 8 0 rtmask 32 23 0 23 5 5 0 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 30435 0 30435 4 3 1 2 0 8 1 percpumem 16 162 0 109 1 0 1 1 0 8 0 vcpupl 3968 10 0 1 2 0 2 2 0 8 0 vmpool 848 14 0 5 3 2 1 2 0 8 0 kstatmem 264 172 0 138 3 0 3 3 0 8 0 scsiplug 72 10 0 10 6 5 1 1 0 8 1 scxspl 216 60788 0 60788 13 12 1 8 1 8 1 plimitpl 152 746 0 727 1 0 1 1 0 8 0 sigapl 424 2397 0 2345 11 4 7 10 0 8 0 knotepl 120 613 0 0 17 0 17 17 0 8 0 kqueuepl 224 1044 0 1033 17 16 1 5 0 8 0 pipepl 344 553 0 525 11 8 3 9 0 8 0 fdescpl 528 2315 0 2280 3 0 3 3 0 8 0 filepl 160 17700 0 17450 39 26 13 19 0 8 0 lockfpl 104 713 0 708 1 0 1 1 0 8 0 lockfspl 48 279 0 274 1 0 1 1 0 8 0 sessionpl 144 40 0 26 1 0 1 1 0 8 0 pgrppl 48 66 0 43 1 0 1 1 0 8 0 ucredpl 104 3049 0 3036 1 0 1 1 0 8 0 zombiepl 144 3021 0 3018 1 0 1 1 0 8 0 processpl 1232 2397 0 2345 7 2 5 7 0 8 0 procpl 664 5601 0 5540 12 5 7 9 0 8 0 sosppl 176 15 0 15 5 5 0 1 0 8 0 sockpl 752 4284 0 4233 53 45 8 18 0 8 2 mcl64k 65536 7 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 128 0 0 16 0 16 16 0 8 0 mcl2k 2048 45 0 0 6 1 5 6 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1229 0 0 73 0 73 73 0 8 0 bufpl 280 25307 0 19170 439 0 439 439 0 8 0 anonpl 32 11687 0 0 96 1 95 95 0 246 0 amapchunkpl 152 71421 0 70838 64 35 29 36 0 158 2 amappl16 200 9249 0 9174 77 61 16 27 0 8 1 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 3 0 3 1 1 0 1 0 8 0 amappl13 176 478 0 477 1 0 1 1 0 8 0 amappl12 168 2739 0 2694 3 0 3 3 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 47 0 33 1 0 1 1 0 8 0 amappl9 144 260 0 260 1 1 0 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 93 0 92 1 0 1 1 0 8 0 amappl6 120 339 0 321 1 0 1 1 0 8 0 amappl5 112 88 0 72 1 0 1 1 0 8 0 amappl4 104 493 0 457 1 0 1 1 0 8 0 amappl3 96 12265 0 12171 4 1 3 3 0 8 0 amappl2 88 2511 0 2408 3 0 3 3 0 8 0 amappl1 80 19375 0 18644 16 0 16 16 0 8 0 amappl 88 19380 0 19197 5 0 5 5 0 92 0 uvmvnodes 80 190 0 0 4 0 4 4 0 8 0 dma16384 16384 2 0 2 1 0 1 1 0 8 1 dma8192 8192 3 0 3 2 2 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 257 0 257 4 3 1 1 0 8 1 dma64 64 7 0 7 2 2 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 50 0 11 1 0 1 1 0 8 0 uaddrrnd 24 2315 0 2280 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2315 0 2280 1 0 1 1 0 8 0 vmmpekpl 168 20260 0 20204 3 0 3 3 0 8 0 vmmpepl 168 154357 0 152084 133 26 107 108 0 357 3 vmsppl 488 2314 0 2280 6 1 5 5 0 8 0 rwobjpl 80 43495 0 42076 40 8 32 33 0 8 0 pdppl 4096 4666 0 4579 132 43 89 89 0 8 2 pvpl 32 19424 0 0 157 0 157 157 0 265 0 pmappl 256 2328 0 2285 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 412 0 85 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace bpfdetach(ffff800001592800) at bpfdetach+0x70 sys/net/bpf.c:1770 if_detach(ffff800001592800) at if_detach+0x12b sys/net/if.c:1288 tun_clone_destroy(ffff800001592800) at tun_clone_destroy+0x2ce sys/net/if_tun.c:347 if_clone_destroy(ffff80002a2e05f0) at if_clone_destroy+0x205 sys/net/if.c:1478 ifioctl(ffff8000016f4d58,80206979,ffff80002a2e05f0,ffff80003c429798) at ifioctl+0x59d sys/net/if.c:2159 sys_ioctl(ffff80003c429798,ffff80002a2e07d0,ffff80002a2e0720) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002a2e07d0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2e07d0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcb73a5787d0, 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 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299ddff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5