kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff80002aea7580) at vm_run+0x215 sys/arch/amd64/amd64/vmm.c:4568 vmmioctl(a00,c0205602,ffff80002aea7580,1,ffff80002131e010) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:685 VOP_IOCTL(fffffd806e409e60,c0205602,ffff80002aea7580,1,fffffd807f7d72d8,ffff80002131e010) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806bb3bb60,c0205602,ffff80002aea7580,ffff80002131e010) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002131e010,ffff80002aea7698,ffff80002aea76e0) at sys_ioctl+0x4a2 syscall(ffff80002aea7760) at syscall+0x4c2 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002aea7760) at syscall+0x4c2 sys/arch/amd64/amd64/trap.c:586 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd39faec46c0, count: -8 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff80002e46d648 rbp 0xffff80002aea72d0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0xfffffffffffffffb r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0x9a8fbe574447ca59 r11 0xdcd0ccea6e2eb3a1 r12 0xffff80002e46d3a0 r13 0xffffffff82921ff0 cpu_info_full_primary+0x1ff0 r14 0xffff80002e46d000 r15 0xffff80002aea7580 rip 0xffffffff81be1e20 done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80002aea7126 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor.4) pid=470098 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff80002131f7b0,0xffff80002131efe0 process=0xffff8000ffff1908 user=0xffff80002aea2000, vmspace=0xfffffd8069446480 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 21883 115622 96268 0 2 0 syz-executor.4 *21883 470098 96268 0 7 0x4000000 syz-executor.4 51743 155748 8544 0 2 0 syz-executor.5 51743 178398 8544 0 3 0x4000080 fsleep syz-executor.5 78470 310321 26856 0 2 0 syz-executor.3 78470 409455 26856 0 3 0x4000080 netcon2 syz-executor.3 78470 138717 26856 0 2 0x4000000 syz-executor.3 60162 259519 92569 0 2 0 syz-executor.1 60162 105499 92569 0 3 0x4000080 fsleep syz-executor.1 13340 524077 48637 0 2 0x2 syz-executor.7 92569 236226 48637 0 3 0x82 nanoslp syz-executor.1 54757 286781 48637 0 2 0x482 syz-executor.2 8544 235766 48637 0 3 0x82 nanoslp syz-executor.5 26570 415943 48637 0 2 0x2 syz-executor.0 74942 202042 48637 0 2 0x482 syz-executor.6 96268 55538 48637 0 2 0x482 syz-executor.4 52333 377768 1 0 3 0x100083 ttyin getty 26856 206732 48637 0 2 0x482 syz-executor.3 85510 207573 0 0 3 0x14200 acct acct 9813 503888 0 0 3 0x14200 bored sosplice 48637 314967 92324 0 3 0x82 wait syz-fuzzer 48637 111671 92324 0 3 0x4000082 nanoslp syz-fuzzer 48637 203354 92324 0 3 0x4000082 kqread syz-fuzzer 48637 381377 92324 0 3 0x4000082 wait syz-fuzzer 48637 398590 92324 0 3 0x4000082 thrsleep syz-fuzzer 48637 448546 92324 0 3 0x4000082 thrsleep syz-fuzzer 48637 453183 92324 0 3 0x4000082 thrsleep syz-fuzzer 48637 429418 92324 0 3 0x4000082 thrsleep syz-fuzzer 48637 447160 92324 0 3 0x4000082 thrsleep syz-fuzzer 48637 129940 92324 0 3 0x4000082 wait syz-fuzzer 48637 518491 92324 0 3 0x4000082 wait syz-fuzzer 48637 47044 92324 0 3 0x4000082 wait syz-fuzzer 48637 441583 92324 0 3 0x4000082 wait syz-fuzzer 48637 341165 92324 0 3 0x4000082 wait syz-fuzzer 48637 502829 92324 0 3 0x4000082 thrsleep syz-fuzzer 48637 501589 92324 0 3 0x4000082 wait syz-fuzzer 92324 45842 74629 0 3 0x10008a sigsusp ksh 74629 5959 21289 0 3 0x9a kqread sshd 21289 399931 1 0 3 0x88 kqread sshd 34691 95913 89745 74 3 0x1100092 bpf pflogd 89745 508937 1 0 3 0x80 netio pflogd 32309 323047 87906 73 3 0x1100090 kqread syslogd 87906 385324 1 0 3 0x100082 netio syslogd 59152 246482 1 0 3 0x100080 kqread resolvd 89007 138383 98370 77 3 0x100092 kqread dhcpleased 81756 60515 98370 77 3 0x100092 kqread dhcpleased 98370 423113 1 0 3 0x80 kqread dhcpleased 84797 521263 0 0 2 0x14200 smr 7136 300720 0 0 2 0x14200 zerothread 22100 394034 0 0 3 0x14200 aiodoned aiodoned 4214 255525 0 0 3 0x14200 syncer update 62103 494261 0 0 3 0x14200 cleaner cleaner 63536 222222 0 0 3 0x14200 reaper reaper 74531 273091 0 0 3 0x14200 pgdaemon pagedaemon 47328 374863 0 0 3 0x14200 bored viomb 10636 344436 0 0 3 0x40014200 acpi0 acpi0 60506 448542 0 0 7 0x40014200 idle1 33591 392080 0 0 3 0x14200 bored softnet 30879 143265 0 0 3 0x14200 bored softnet 87931 60718 0 0 3 0x14200 bored softnet 97870 319026 0 0 3 0x14200 bored softnet 59649 136013 0 0 3 0x14200 bored systqmp 37408 356684 0 0 3 0x14200 bored systq 78021 14852 0 0 2 0x40014200 softclock 19527 196300 0 0 3 0x40014200 idle0 1 209590 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 21883 (syz-executor.4) thread 0xffff80002131e010 (470098) exclusive rwlock vcpu r = 0 (0xffff80002e46d3b0) #0 witness_lock+0x44d #1 vm_run+0x100 sys/arch/amd64/amd64/vmm.c:4542 #2 vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:685 #3 VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 #4 vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 #5 sys_ioctl+0x4a2 #6 syscall+0x4c2 mi_syscall sys/sys/syscall_mi.h:101 [inline] #6 syscall+0x4c2 sys/arch/amd64/amd64/trap.c:586 #7 Xsyscall+0x128 Process 13340 (syz-executor.7) thread 0xffff8000261a97a0 (524077) exclusive rrwlock inode r = 0 (0xfffffd806ecfb918) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #10 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #10 syscall+0x438 sys/arch/amd64/amd64/trap.c:586 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807ad4db38) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x438 sys/arch/amd64/amd64/trap.c:586 #9 Xsyscall+0x128 Process 26570 (syz-executor.0) thread 0xffff8000261a8d20 (415943) exclusive rrwlock inode r = 0 (0xfffffd805d102810) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112 #10 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #10 syscall+0x438 sys/arch/amd64/amd64/trap.c:586 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd805d102f80) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412 #6 namei+0x36a sys/kern/vfs_lookup.c:244 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097 #8 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #8 syscall+0x438 sys/arch/amd64/amd64/trap.c:586 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10238 6630K 7251K 78643K 26043 0 pcb 13 20K 22K 78643K 1052 0 rtable 257 18K 18K 78643K 1721 0 ifaddr 131 28K 28K 78643K 748 0 sysctl 3 1K 2K 78643K 12 0 counters 56 35K 36K 78643K 308 0 ioctlops 0 0K 4K 78643K 4939 0 iov 0 0K 28K 78643K 3310 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1338 84K 84K 78643K 9300 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 17K 78643K 415 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 981 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 81K 78643K 17297 0 sigio 0 0K 0K 78643K 116 0 proc 75 91K 127K 78643K 1245 0 subproc 104 6K 6K 78643K 338 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 367 0 in_multi 99 6K 7K 78643K 491 0 ether_multi 1 0K 0K 78643K 62 0 mrt 1 0K 0K 78643K 27 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 175 784K 784K 78643K 175 0 exec 0 0K 1K 78643K 1990 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 403 320K 337K 78643K 106853 0 UVM aobj 131 8K 8K 78643K 168 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 544 0 NDP 15 0K 2K 78643K 164 0 temp 145 4734K 5759K 78643K 91998 0 kqueue 12 18K 26K 78643K 513 0 SYN cache 2 256K 264K 78643K 4 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 381 0 378 3 2 1 3 0 8 0 rtentry 112 481 0 371 5 1 4 4 0 8 0 unpcb 144 7078 0 7063 58 57 1 7 0 8 0 syncache 296 65 0 65 14 14 0 1 0 8 0 tcpqe 32 219 0 219 6 6 0 1 0 8 0 tcpcb 768 1706 0 1698 50 48 2 14 0 8 1 arp 120 101 0 81 1 0 1 1 0 8 0 inpcb 368 20943 0 20927 225 216 9 19 0 8 6 ip6q 72 10 0 10 3 3 0 1 0 8 0 ip6af 40 20 0 20 3 3 0 1 0 8 0 nd6 48 89 0 61 1 0 1 1 0 8 0 pkpcb 40 9 0 9 2 2 0 1 0 8 0 kcovpl 48 26 0 18 1 0 1 1 0 8 0 mppekey 1024 13 0 13 3 3 0 1 0 8 0 ppxss 1256 67 0 67 12 12 0 1 0 8 0 pppxif 1704 21 0 21 5 5 0 1 0 8 0 pfstscr 40 9 0 8 3 2 1 1 0 8 0 pffrag 232 17 0 17 5 5 0 1 0 482 0 pffrnode 88 17 0 17 5 5 0 1 0 8 0 pffrent 40 35 0 35 5 5 0 1 0 8 0 pfosfp 40 1454 0 1029 5 0 5 5 0 8 0 pfosfpen 112 1454 0 738 21 0 21 21 0 8 0 pfrktable 1344 141 0 140 1 0 1 1 0 8 0 pfanchor 1280 341 0 88 22 0 22 22 0 8 0 pftag 88 8 0 0 1 0 1 1 0 8 0 pfstitem 24 31 0 27 1 0 1 1 0 8 0 pfstkey 120 47 0 43 1 0 1 1 0 8 0 pfstate 336 38 0 35 3 2 1 3 0 8 0 pfrule 1360 66 0 61 2 1 1 2 0 8 0 rttmr 136 6 0 6 2 2 0 1 0 8 0 art_heap8 4096 6 0 5 5 4 1 2 0 8 0 art_heap4 256 1965 0 1498 50 18 32 32 0 8 1 art_table 32 1971 0 1503 5 0 5 5 0 8 0 art_node 16 480 0 386 1 0 1 1 0 8 0 sysvmsgpl 40 34 0 14 1 0 1 1 0 8 0 semapl 112 979 0 969 1 0 1 1 0 8 0 shmpl 112 165 0 37 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 25810 0 24353 92 0 92 92 0 8 0 ffsino 272 25810 0 24353 98 0 98 98 0 8 0 nchpl 144 45929 0 45391 63 38 25 63 0 8 0 rtmask 32 2 0 2 2 2 0 1 0 8 0 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 161416 0 161414 6 5 1 2 0 8 0 percpumem 16 166 0 126 1 0 1 1 0 8 0 vcpupl 2048 79 0 2 10 0 10 10 0 8 0 vmpool 568 79 0 2 6 0 6 6 0 8 0 pfiaddrpl 120 42 0 42 2 2 0 1 0 8 0 kstatmem 264 214 0 184 3 0 3 3 0 8 0 scsiplug 72 4 0 4 1 1 0 1 0 8 0 scxspl 216 129943 0 129943 13 12 1 8 0 8 1 plimitpl 152 4655 0 4639 1 0 1 1 0 8 0 sigapl 424 17583 0 17535 7 1 6 6 0 8 0 futexpl 64 145468 0 145466 5 4 1 1 0 8 0 knotepl 120 594 0 0 11 1 10 11 0 8 0 kqueuepl 216 1061 0 1053 11 10 1 5 0 8 0 pipepl 320 4098 0 4070 89 86 3 8 0 8 0 fdescpl 496 17564 0 17537 6 2 4 5 0 8 0 filepl 152 114532 0 114289 178 165 13 22 0 8 3 lockfpl 104 2808 0 2806 5 4 1 2 0 8 0 lockfspl 48 789 0 787 1 0 1 1 0 8 0 sessionpl 144 44 0 27 1 0 1 1 0 8 0 pgrppl 48 57 0 40 1 0 1 1 0 8 0 ucredpl 104 16899 0 16887 1 0 1 1 0 8 0 zombiepl 144 17537 0 17535 1 0 1 1 0 8 0 processpl 1064 17583 0 17535 4 0 4 4 0 8 0 procpl 672 40441 0 40373 17 10 7 8 0 8 0 srpgc 96 22 0 22 4 4 0 1 0 8 0 sosppl 168 1541 0 1541 17 16 1 1 0 8 1 sockpl 488 28425 0 28397 457 445 12 29 0 8 8 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 31 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 788 0 0 20 1 19 20 0 8 0 mtagpl 96 771 0 0 14 0 14 14 0 8 0 mbufpl 256 2211 0 0 123 1 122 122 0 8 0 bufpl 288 25815 0 19481 453 0 453 453 0 8 0 anonpl 24 2955690 0 2942069 192 100 92 110 0 186 0 amapchunkpl 152 293662 0 292982 68 38 30 36 0 158 0 amappl16 200 23244 0 22904 83 64 19 31 0 8 0 amappl15 192 4 0 4 2 2 0 1 0 8 0 amappl14 184 227 0 213 2 1 1 2 0 8 0 amappl12 168 662 0 654 1 0 1 1 0 8 0 amappl11 160 46 0 32 1 0 1 1 0 8 0 amappl10 152 56 0 40 1 0 1 1 0 8 0 amappl9 144 998 0 997 1 0 1 1 0 8 0 amappl8 136 533 0 392 5 0 5 5 0 8 0 amappl7 128 69 0 50 1 0 1 1 0 8 0 amappl6 120 510 0 483 2 1 1 2 0 8 0 amappl5 112 256 0 245 1 0 1 1 0 8 0 amappl4 104 888 0 850 7 5 2 3 0 8 0 amappl3 96 48466 0 48412 2 0 2 2 0 8 0 amappl2 88 18406 0 18330 3 1 2 3 0 8 0 amappl1 80 381003 0 380268 39 21 18 22 0 8 0 amappl 88 106165 0 105955 8 2 6 6 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 72 167 0 37 3 0 3 3 0 8 0 uaddrrnd 24 17644 0 17540 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 17644 0 17540 1 0 1 1 0 8 0 vmmpekpl 168 115132 0 115063 4 0 4 4 0 8 0 vmmpepl 168 1530604 0 1527887 235 101 134 138 0 357 0 vmsppl 368 17643 0 17540 11 1 10 10 0 8 0 rwobjpl 56 378518 0 370846 129 19 110 113 0 8 0 pdppl 4096 35295 0 35157 709 563 146 148 0 8 8 pvpl 32 6547489 0 6528261 445 277 168 275 0 265 0 pmappl 248 17643 0 17540 8 1 7 7 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1835 0 829 29 0 29 29 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace done_flush() at done_flush+0x38 vm_run(ffff80002aea7580) at vm_run+0x215 sys/arch/amd64/amd64/vmm.c:4568 vmmioctl(a00,c0205602,ffff80002aea7580,1,ffff80002131e010) at vmmioctl+0x192 sys/arch/amd64/amd64/vmm.c:685 VOP_IOCTL(fffffd806e409e60,c0205602,ffff80002aea7580,1,fffffd807f7d72d8,ffff80002131e010) at VOP_IOCTL+0x96 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806bb3bb60,c0205602,ffff80002aea7580,ffff80002131e010) at vn_ioctl+0xbc sys/kern/vfs_vnops.c:525 sys_ioctl(ffff80002131e010,ffff80002aea7698,ffff80002aea76e0) at sys_ioctl+0x4a2 syscall(ffff80002aea7760) at syscall+0x4c2 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002aea7760) at syscall+0x4c2 sys/arch/amd64/amd64/trap.c:586 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd39faec46c0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -5