witness: lock_object uninitialized: 0xffff800000d93028 Starting stack trace... witness_checkorder(ffff800000d93028,9,0) at witness_checkorder+0x137 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000d93028,9,0) at witness_checkorder+0x137 sys/kern/subr_witness.c:777 rw_enter_write(ffff800000d93018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d93000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000d93000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002e447260) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff8000211e5608,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000211e5608,ffff80002e4b78f0,ffff80002e4b7940) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e4b79c0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4b79c0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b3ac7edf6d0, count: 249 End of stack trace. Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000d93028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000d93028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000d93018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d93000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000d93000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002e447260) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff8000211e5608,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000211e5608,ffff80002e4b78f0,ffff80002e4b7940) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e4b79c0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4b79c0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b3ac7edf6d0, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002e4b7690 rbx 0x3 rdx 0 rcx 0xffff8000211e5608 rax 0xffffffff82b97ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80002e4b7630 r9 0x8080808080808080 r10 0xb8bf3efac8dbc035 r11 0xa72f242c5d2a358b r12 0xffff800000d93001 r13 0xffff800000d93028 r14 0 r15 0 rip 0xffffffff8255bacc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e4b7680 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.6) pid=397188 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000211fd5e0,0xffff8000211e5360 process=0xffff80002e447260 user=0xffff80002e4b2000, vmspace=0xfffffd807eff9ae0 estcpu=36, cpticks=11, pctcpu=0.8 user=0, sys=7, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16914 140347 67751 0 2 0x480 syz-executor.1 16914 46316 67751 0 3 0x4000080 fsleep syz-executor.1 19439 335263 98671 0 3 0 vmmaplk syz-executor.2 19439 66337 98671 0 2 0x4000000 syz-executor.2 30003 457476 84431 0 2 0x480 syz-executor.7 30003 439086 84431 0 3 0x4000080 fsleep syz-executor.7 30003 504296 84431 0 3 0x4000080 fsleep syz-executor.7 30003 255872 84431 0 3 0x4000080 fsleep syz-executor.7 2058 203765 31135 0 2 0 syz-executor.3 2058 375716 31135 0 3 0x4000080 fsleep syz-executor.3 2058 335726 31135 0 3 0x4000080 netio syz-executor.3 2058 71753 31135 0 3 0x4000080 fsleep syz-executor.3 41491 103273 35917 0 2 0x490 syz-executor.0 41491 325757 35917 0 3 0x4000090 fsleep syz-executor.0 41491 459833 35917 0 3 0x4000090 fsleep syz-executor.0 41491 452802 35917 0 3 0x4000090 fsleep syz-executor.0 58161 412109 21095 0 2 0x482 syz-executor.4 98671 358684 21095 0 2 0x482 syz-executor.2 67751 143677 21095 0 2 0x482 syz-executor.1 31135 448294 21095 0 2 0x482 syz-executor.3 84431 128883 21095 0 2 0x482 syz-executor.7 45526 486210 21095 0 2 0x482 syz-executor.5 52056 68933 0 0 3 0x14200 acct acct 94284 306498 0 0 3 0x14200 bored sosplice 75006 231857 0 0 3 0x14280 nfsidl nfsio 45917 352420 0 0 3 0x14280 nfsidl nfsio 11843 444865 0 0 3 0x14280 nfsidl nfsio 16509 160615 0 0 3 0x14280 nfsidl nfsio 2632 36375 0 0 3 0x14280 nfsidl nfsio 91784 218596 0 0 3 0x14280 nfsidl nfsio 26511 146652 0 0 3 0x14280 nfsidl nfsio 75993 512831 0 0 3 0x14280 nfsidl nfsio 12228 75633 0 0 3 0x14280 nfsidl nfsio 91392 89500 0 0 3 0x14280 nfsidl nfsio 89481 62383 0 0 3 0x14280 nfsidl nfsio 83271 204988 0 0 3 0x14280 nfsidl nfsio 1786 455206 0 0 3 0x14280 nfsidl nfsio 64684 358916 0 0 3 0x14280 nfsidl nfsio 53503 341736 0 0 3 0x14280 nfsidl nfsio 81768 107124 0 0 3 0x14280 nfsidl nfsio 42588 421122 0 0 3 0x14280 nfsidl nfsio 47056 140992 0 0 3 0x14280 nfsidl nfsio 7855 343025 0 0 3 0x14280 nfsidl nfsio 77493 70028 0 0 3 0x14280 nfsidl nfsio 59852 348524 21095 0 2 0x482 syz-executor.6 35917 387210 21095 0 2 0x482 syz-executor.0 21095 6189 71530 0 3 0x2000082 wait syz-fuzzer 21095 108499 71530 0 2 0x6000482 syz-fuzzer 21095 156551 71530 0 3 0x6000082 thrsleep syz-fuzzer 21095 126867 71530 0 3 0x6000082 kqread syz-fuzzer 21095 336911 71530 0 3 0x6000082 wait syz-fuzzer 21095 448989 71530 0 3 0x6000082 thrsleep syz-fuzzer 21095 283447 71530 0 3 0x6000082 wait syz-fuzzer 21095 365368 71530 0 3 0x6000082 thrsleep syz-fuzzer 21095 327891 71530 0 3 0x6000082 wait syz-fuzzer 21095 192537 71530 0 3 0x6000082 wait syz-fuzzer 21095 186391 71530 0 3 0x6000082 thrsleep syz-fuzzer 21095 303824 71530 0 3 0x6000082 pipeiolk syz-fuzzer 21095 470482 71530 0 3 0x6000082 wait syz-fuzzer 21095 365629 71530 0 3 0x6000082 wait syz-fuzzer 21095 395927 71530 0 3 0x6000082 wait syz-fuzzer 21095 411404 71530 0 3 0x6000082 thrsleep syz-fuzzer 71530 462869 36676 0 3 0x10008a sigsusp ksh 36676 279850 36154 0 3 0x9a kqread sshd 27694 365035 1 0 2 0x100083 getty 36154 344276 1 0 3 0x88 kqread sshd 78734 138179 85231 74 3 0x1100092 bpf pflogd 85231 223266 1 0 3 0x80 netio pflogd 87806 62194 63938 73 2 0x1100090 syslogd 63938 145274 1 0 3 0x100082 netio syslogd 715 184324 1 0 3 0x100080 kqread resolvd 54201 52940 47979 77 3 0x100092 kqread dhcpleased 57631 519894 47979 77 3 0x100092 kqread dhcpleased 47979 324965 1 0 3 0x80 kqread dhcpleased 22259 164514 0 0 3 0x14200 bored smr 74868 519668 0 0 2 0x14200 zerothread 56539 45604 0 0 3 0x14200 aiodoned aiodoned 31075 338196 0 0 3 0x14200 syncer update 27953 385063 0 0 3 0x14200 cleaner cleaner 5411 162625 0 0 2 0x14200 reaper 37875 137492 0 0 3 0x14200 pgdaemon pagedaemon 6457 416786 0 0 3 0x14200 bored viomb 87163 76415 0 0 3 0x40014200 acpi0 acpi0 92411 89396 0 0 7 0x40014200 idle1 22458 238307 0 0 3 0x14200 bored softnet3 48371 439889 0 0 3 0x14200 bored softnet2 82419 439116 0 0 3 0x14200 bored softnet1 65338 389631 0 0 3 0x14200 bored softnet0 6959 52436 0 0 3 0x14200 bored systqmp 50326 258814 0 0 3 0x14200 bored systq 45880 282427 0 0 2 0x40014200 softclock 28870 213958 0 0 3 0x40014200 idle0 1 407156 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 19439 (syz-executor.2) thread 0xffff8000211e5350 (66337) exclusive rwlock vmmaplk r = 0 (0xfffffd807eff9668) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvmfault_lookup+0xb6 sys/uvm/uvm_fault.c:1767 #4 uvm_fault_check+0x65d uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x65d sys/uvm/uvm_fault.c:711 #5 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #6 kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279 #7 kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332 #8 alltraps_kern_meltdown+0x7b #9 _copyin+0x57 #10 pipe_write+0x373 sys/kern/sys_pipe.c:561 #11 dofilewritev+0x1a0 sys/kern/sys_generic.c:375 #12 sys_write+0x87 sys/kern/sys_generic.c:295 #13 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #14 Xsyscall+0x128 Process 5411 (reaper) thread 0xffff8000211acae8 (162625) exclusive rwlock kmmaplk r = 0 (0xffffffff82d63c90) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvm_unmap+0x7c sys/uvm/uvm_map.c:1855 #4 uvm_uarea_free+0x39 sys/uvm/uvm_glue.c:288 #5 reaper+0x168 sys/kern/kern_exit.c:438 #6 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10195 6485K 6743K 78643K 12324 0 pcb 13 10K 12K 78643K 309 0 rtable 236 6K 6K 78643K 696 0 pf 32 9K 10K 78643K 123 0 ifaddr 45 15K 16K 78643K 121 0 ifgroup 55 2K 2K 78643K 193 0 counters 60 35K 36K 78643K 134 0 ioctlops 0 0K 4K 78643K 1510 0 iov 0 0K 32K 78643K 360 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1351 84K 85K 78643K 2390 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 31 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 283 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 89K 78643K 2311 0 sigio 0 0K 0K 78643K 10 0 proc 75 127K 127K 78643K 959 0 subproc 104 6K 6K 78643K 247 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 243 0 in_multi 99 7K 7K 78643K 264 0 ether_multi 1 0K 0K 78643K 5 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 837 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 375 88K 89K 78643K 25532 0 UVM aobj 131 4K 4K 78643K 139 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 20 0 NDP 12 0K 1K 78643K 87 0 temp 60 5912K 6003K 78643K 28358 0 kqueue 12 18K 25K 78643K 209 0 SYN cache 2 16K 16K 78643K 2 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 120 120 0 117 2 1 1 2 0 8 0 rtentry 112 235 0 124 4 0 4 4 0 8 0 unpcb 144 1136 0 1117 13 12 1 6 0 8 0 syncache 296 18 0 18 4 4 0 1 0 8 0 tcpqe 32 331 0 331 4 4 0 1 0 8 0 tcpcb 808 553 0 544 24 22 2 13 0 8 0 arp 120 40 0 22 1 0 1 1 0 8 0 inpcb 368 1226 0 1214 32 27 5 7 0 8 3 nd6 136 60 0 35 1 0 1 1 0 8 0 kcovpl 48 19 0 11 1 0 1 1 0 8 0 ppxss 1256 8 0 8 1 1 0 1 0 8 0 pffrag 232 13 0 10 1 0 1 1 0 482 0 pffrnode 88 13 0 10 1 0 1 1 0 8 0 pffrent 40 31 0 28 2 1 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 24 104 0 92 1 0 1 1 0 8 0 pfstkey 128 104 0 92 1 0 1 1 0 8 0 pfstate 376 104 0 92 4 1 3 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 968 0 507 29 0 29 29 0 8 0 art_table 32 969 0 507 4 0 4 4 0 8 0 art_node 16 234 0 133 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 5 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 278 0 268 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4380 0 2913 92 0 92 92 0 8 0 ffsino 272 4380 0 2913 98 0 98 98 0 8 0 nchpl 144 7406 0 6889 63 40 23 63 0 8 0 uvmvnodes 80 5137 0 0 105 0 105 105 0 8 0 vnodes 216 5137 0 0 286 0 286 286 0 8 0 namei 1024 26385 0 26385 5 3 2 2 0 8 2 percpumem 16 80 0 37 1 0 1 1 0 8 0 kstatmem 264 98 0 74 2 0 2 2 0 8 0 scxspl 216 28255 0 28255 17 16 1 8 1 8 1 plimitpl 152 185 0 169 1 0 1 1 0 8 0 sigapl 424 2628 0 2558 10 2 8 9 0 8 0 futexpl 64 16362 0 16353 3 2 1 1 0 8 0 knotepl 120 467 0 0 12 1 11 11 0 8 0 kqueuepl 216 1199 0 1191 27 26 1 8 0 8 0 pipepl 320 705 0 674 24 18 6 8 0 8 3 fdescpl 496 2589 0 2561 5 1 4 5 0 8 0 filepl 152 15256 0 15005 46 33 13 18 0 8 3 lockfpl 104 1736 0 1733 3 2 1 2 0 8 0 lockfspl 48 392 0 389 1 0 1 1 0 8 0 sessionpl 144 35 0 18 1 0 1 1 0 8 0 pgrppl 48 35 0 18 1 0 1 1 0 8 0 ucredpl 104 1907 0 1891 1 0 1 1 0 8 0 zombiepl 144 2989 0 2986 1 0 1 1 0 8 0 processpl 1072 2628 0 2558 5 0 5 5 0 8 0 procpl 696 6978 0 6881 16 5 11 11 0 8 1 srpgc 96 1 0 1 1 1 0 1 0 8 0 sosppl 168 28 0 26 4 3 1 1 0 8 0 sockpl 488 2482 0 2448 65 57 8 21 0 8 2 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 262 0 0 33 3 30 33 0 8 0 mtagpl 96 54 0 0 2 0 2 2 0 8 0 mbufpl 256 1890 0 0 115 0 115 115 0 8 0 bufpl 288 9014 0 2687 453 0 453 453 0 8 0 anonpl 24 396692 0 382252 128 39 89 104 0 186 0 amapchunkpl 152 80634 0 79716 64 25 39 48 0 158 1 amappl16 200 8747 0 8266 53 27 26 33 0 8 0 amappl15 192 13 0 13 2 2 0 1 0 8 0 amappl14 184 200 0 185 2 1 1 2 0 8 0 amappl13 176 10 0 10 2 2 0 1 0 8 0 amappl12 168 3451 0 3419 3 1 2 2 0 8 0 amappl11 160 100 0 85 1 0 1 1 0 8 0 amappl10 152 81 0 70 1 0 1 1 0 8 0 amappl9 144 181 0 180 2 1 1 1 0 8 0 amappl8 136 335 0 251 3 0 3 3 0 8 0 amappl7 128 76 0 61 1 0 1 1 0 8 0 amappl6 120 360 0 339 2 1 1 2 0 8 0 amappl5 112 238 0 224 1 0 1 1 0 8 0 amappl4 104 687 0 641 3 1 2 3 0 8 0 amappl3 96 16172 0 16076 4 1 3 3 0 8 0 amappl2 88 2881 0 2812 3 1 2 3 0 8 0 amappl1 80 18572 0 18014 23 10 13 23 0 8 0 amappl 88 24847 0 24600 7 0 7 7 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 72 138 0 8 3 0 3 3 0 8 0 uaddrrnd 24 2589 0 2560 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2589 0 2560 1 0 1 1 0 8 0 vmmpekpl 168 27049 0 26982 7 3 4 4 0 8 0 vmmpepl 168 179804 0 177349 199 84 115 152 0 357 2 vmsppl 464 2588 0 2560 5 1 4 5 0 8 0 rwobjpl 56 55897 0 49001 102 4 98 98 0 8 0 pdppl 4096 5186 0 5120 262 192 70 82 0 8 4 pvpl 32 1063925 0 1043277 370 197 173 368 0 265 0 pmappl 248 2588 0 2560 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1158 0 250 27 0 27 27 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000d93028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000d93028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000d93018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d93000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000d93000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002e447260) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff8000211e5608,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000211e5608,ffff80002e4b78f0,ffff80002e4b7940) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e4b79c0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4b79c0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b3ac7edf6d0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e 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+0x27 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d58ff0) at sched_idle+0x41e sys/kern/kern_sched.c:199 end trace frame: 0x0, count: -5