witness: lock_object uninitialized: 0xffff8000014d9030 Starting stack trace... witness_checkorder(ffff8000014d9030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000014d9030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000014d9018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014d9000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003b0bfdd0) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(fStopped at db_enter+0x25: addq $0x8,%rsp ddb{0}> 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000014d9030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014d9018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014d9000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003b0bfdd0) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffff8540,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffff8540,ffff80003c4fab70,ffff80003c4faac0) at sys_exit+0x1a syscall(ffff80003c4fab70) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4fab70) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78b6663b4610, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c4fa800 rbx 0 rdx 0 rcx 0xffff8000ffff8540 rax 0xffffffff83851ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80003c4fa7a0 r9 0x8080808080808080 r10 0x3d257c79ea436447 r11 0xad9f73b808190836 r12 0 r13 0x1 r14 0xffff8000014d9030 r15 0x3 rip 0xffffffff81441685 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4fa7f0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=466671 pid=53469 tcnt=0 stat=onproc flags process=1001008 proc=2000 runpri=32, usrpri=58, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff8540 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffff6cf8,0xffffffff838a0238 process=0xffff80003b0bfdd0 user=0xffff80003c4f5000, vmspace=0xfffffd806bead3a8 estcpu=8, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8529 225948 84643 0 3 0x80 fsleep syz-executor 8529 179838 84643 0 3 0x4000080 ttyopn syz-executor 13638 221790 52540 0 3 0x80 fsleep syz-executor 13638 348388 52540 0 3 0x4000080 msgwait syz-executor 9411 443359 27392 0 2 0 syz-executor 9411 503388 27392 0 2 0x4000000 syz-executor 86230 241595 0 0 3 0x14200 acct acct 58432 278093 3206 0 3 0x80 fsleep syz-executor 58432 354799 3206 0 3 0x4000080 fifow syz-executor 76331 181249 0 0 3 0x14200 bored sosplice 52540 367830 58996 0 2 0x3 syz-executor 3206 84626 58996 0 2 0x482 syz-executor 40256 135370 58996 0 2 0x3 syz-executor 84643 118201 58996 0 2 0x482 syz-executor 91302 196035 58996 0 2 0x2 syz-executor 27392 277871 58996 0 2 0x3 syz-executor 34818 60558 58996 0 2 0x482 syz-executor 55999 497666 58996 0 2 0x2 syz-executor 58996 344332 79743 0 3 0x82 kqread syz-executor 79743 100598 74483 0 3 0x10008a sigsusp ksh 74483 305693 5 0 3 0x98 kqread sshd-session 5 495156 72264 0 3 0x92 kqread sshd-session 24833 432192 1 0 3 0x100083 ttyopn getty 72264 139927 1 0 3 0x88 kqread sshd 66122 190289 76827 74 3 0x1100092 bpf pflogd 76827 92295 1 0 3 0x80 sbwait pflogd 45072 225319 10578 73 3 0x1100090 kqread syslogd 10578 404579 1 0 3 0x100082 sbwait syslogd 79451 392069 1 0 3 0x100080 kqread resolvd 6749 326354 15721 77 3 0x100092 kqread dhcpleased 45767 391346 15721 77 3 0x100092 kqread dhcpleased 15721 106651 1 0 3 0x80 kqread dhcpleased 55515 481063 0 0 3 0x14200 bored smr 26774 454480 0 0 2 0x14200 zerothread 2923 420386 0 0 3 0x14200 aiodoned aiodoned 67760 99587 0 0 3 0x14200 syncer update 35569 247950 0 0 3 0x14200 cleaner cleaner 71343 274054 0 0 2 0x14200 reaper 27060 192005 0 0 3 0x14200 pgdaemon pagedaemon 53042 518349 0 0 3 0x14200 bored viomb 74090 136507 0 0 3 0x40014200 acpi0 acpi0 27675 348759 0 0 7 0x40014200 idle1 57236 291997 0 0 3 0x14200 bored softnet3 61301 308511 0 0 3 0x14200 bored softnet2 39470 230416 0 0 3 0x14200 bored softnet1 11265 178945 0 0 3 0x14200 bored softnet0 48904 292147 0 0 3 0x14200 bored systqmp 51677 195468 0 0 3 0x14200 bored systq 73889 499965 0 0 2 0x14200 softclockmp 54916 447728 0 0 2 0x40014200 softclock 33907 72572 0 0 3 0x40014200 idle0 1 6368 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 91302 (syz-executor) thread 0xffff80002a38ef78 (196035) exclusive rrwlock inode r = 0 (0xfffffd806e63a3f8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1851 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c3badf8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1851 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 55999 (syz-executor) thread 0xffff80002a38ece8 (497666) exclusive rrwlock inode r = 0 (0xfffffd806dde6740) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1851 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cfa31e8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1851 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 71343 (reaper) thread 0xffff8000ffffd488 (274054) exclusive rwlock kmmaplk r = 0 (0xffffffff838cfdb0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5250 #3 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:833 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:284 #6 reaper+0x1fe sys/kern/kern_exit.c:466 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10198 11030K 11283K 166960K 11782 0 pcb 17 12K 12K 166960K 60 0 rtable 183 5K 7K 166960K 408 0 pf 28 16K 18K 166960K 80 0 ifaddr 32 5K 7K 166960K 66 0 ifgroup 43 2K 2K 166960K 95 0 sysctl 1 1K 1K 166960K 1 0 counters 58 35K 37K 166960K 102 0 ioctlops 0 0K 4K 166960K 1516 0 iov 0 0K 16K 166960K 80 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1357 85K 86K 166960K 1697 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 13K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 32 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 248K 166960K 511 0 sigio 0 0K 0K 166960K 7 0 proc 74 115K 140K 166960K 565 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 46 0 in_multi 66 4K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 393 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 203 72K 76K 166960K 6157 0 UVM aobj 19 2K 2K 166960K 22 0 pinsyscall 40 80K 102K 166960K 1581 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 22 0 NDP 9 0K 2K 166960K 39 0 temp 50 8634K 8699K 166960K 17981 0 kqueue 13 20K 26K 166960K 72 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 119 0 116 3 2 1 3 0 8 0 rtentry 112 132 0 49 4 0 4 4 0 8 0 unpcb 144 237 0 215 3 2 1 2 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 808 101 0 95 1 0 1 1 0 8 0 arp 120 21 0 7 1 0 1 1 0 8 0 inpcb 376 331 0 323 3 1 2 2 0 8 0 nd6 136 26 0 9 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 2 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 12 0 12 2 2 0 1 0 8 0 pppxif 1472 7 0 7 2 2 0 1 0 8 0 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 7 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 39 0 18 1 0 1 1 0 8 0 pfstkey 128 39 0 18 1 0 1 1 0 8 0 pfstate 376 39 0 18 4 0 4 4 0 8 0 pfrule 1344 26 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 521 0 196 29 5 24 29 0 8 0 art_table 32 522 0 196 4 0 4 4 0 8 0 art_node 16 128 0 56 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 29 0 19 1 0 1 1 0 8 0 shmpl 112 19 0 3 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2285 0 781 95 0 95 95 0 8 0 ffsino 280 2285 0 781 109 0 109 109 0 8 0 nchpl 144 3001 0 1321 63 0 63 63 0 8 0 uvmvnodes 80 2537 0 0 52 0 52 52 0 8 0 vnodes 216 2537 0 0 141 0 141 141 0 8 0 namei 1024 9583 0 9583 5 4 1 3 0 8 1 percpumem 16 65 0 22 1 0 1 1 0 8 0 kstatmem 264 46 0 28 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 9527 0 9527 10 7 3 8 1 8 3 plimitpl 152 79 0 61 1 0 1 1 0 8 0 sigapl 424 799 0 750 7 1 6 7 0 8 0 futexpl 64 5701 0 5698 1 0 1 1 0 8 0 knotepl 120 322 0 0 10 0 10 10 0 8 0 kqueuepl 216 120 0 111 2 0 2 2 0 8 1 pipepl 328 131 0 102 3 0 3 3 0 8 0 fdescpl 504 779 0 751 5 0 5 5 0 8 1 filepl 152 3894 0 3668 15 5 10 12 0 8 0 lockfpl 104 116 0 114 1 0 1 1 0 8 0 lockfspl 48 52 0 50 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 39 0 22 1 0 1 1 0 8 0 ucredpl 104 764 0 751 1 0 1 1 0 8 0 zombiepl 144 882 0 881 2 1 1 1 0 8 0 processpl 1168 799 0 750 5 1 4 5 0 8 0 procpl 656 1390 0 1336 6 0 6 6 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 688 693 0 660 10 6 4 10 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 124 0 0 16 0 16 16 0 8 0 mcl2k 2048 42 0 0 6 1 5 6 0 8 1 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 4677 0 0 293 0 293 293 0 8 0 bufpl 280 3165 0 135 217 0 217 217 0 8 0 anonpl 24 126443 0 123226 38 13 25 35 0 184 0 amapchunkpl 152 19436 0 19017 27 6 21 23 0 158 2 amappl16 200 2220 0 2186 9 6 3 6 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 113 0 101 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1419 0 1390 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 274 0 273 2 1 1 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 110 0 98 1 0 1 1 0 8 0 amappl6 120 176 0 173 1 0 1 1 0 8 0 amappl5 112 128 0 119 1 0 1 1 0 8 0 amappl4 104 323 0 306 1 0 1 1 0 8 0 amappl3 96 3703 0 3604 5 1 4 4 0 8 0 amappl2 88 642 0 580 2 0 2 2 0 8 0 amappl1 80 9050 0 8485 15 0 15 15 0 8 0 amappl 88 5767 0 5620 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 21 0 3 1 0 1 1 0 8 0 uaddrrnd 24 779 0 750 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 779 0 750 1 0 1 1 0 8 0 vmmpekpl 168 7821 0 7778 2 0 2 2 0 8 0 vmmpepl 168 52966 0 51215 90 5 85 87 0 357 2 vmsppl 456 778 0 750 5 1 4 5 0 8 0 rwobjpl 64 19234 0 15776 57 0 57 57 0 8 1 pdppl 4096 1565 0 1500 95 24 71 83 0 8 6 pvpl 32 12064 0 0 98 0 98 98 0 265 0 pmappl 248 778 0 750 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 563 0 40 16 0 16 16 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000014d9030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014d9018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014d9000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003b0bfdd0) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffff8540,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffff8540,ffff80003c4fab70,ffff80003c4faac0) at sys_exit+0x1a syscall(ffff80003c4fab70) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4fab70) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78b6663b4610, count: -9 ddb{0}> machine ddbcpu 1 fff8000ffff8540,0,0,1) at exit1+0Sx60f sys_exit(ffff8000ffff854t0,ffff80003c4fab7o0,ffff80003c4faac0) at sys_exitp+0x1a syscall(ffff80003c4fab70p) at syscall+0xb0e8 sys/dev/pci/drm/amd/amdgpu/aldebaran.c:115 Xsyscall() dat Xsyscall+0x128 end of kerne l end trace frame: 0x78b6663b4610, count: 249 End of stack trace. at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029a9bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5