uvm_fault(0xffffffff829c7ff0, 0x10, 0, 1) -> e kernel: page fault trap, code=0 Stopped at nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 TID PID UID PRFLAGS PFLAGS CPU COMMAND *232224 34006 0 0x14000 0x200 0K softnet nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8067264a00,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8067264a00,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166ff8,ffff800021167004,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166ff8,ffff800021167004,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166ff8,ffff800021167004,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd805e2c9b00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd805e2c9b00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd805e2c9b00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167138) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002c000) at taskq_thread+0xe6 sys/kern/kern_task.c:449 end trace frame: 0x0, count: 4 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff829c7ff0, 0x10, 0, 1) -> e ddb{0}> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8067264a00,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8067264a00,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166ff8,ffff800021167004,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166ff8,ffff800021167004,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166ff8,ffff800021167004,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd805e2c9b00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd805e2c9b00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd805e2c9b00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167138) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002c000) at taskq_thread+0xe6 sys/kern/kern_task.c:449 end trace frame: 0x0, count: -11 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800021166b90 rbx 0 rdx 0 rcx 0x7 rax 0xffff8000211482a0 r8 0xffffffff822bc62c nd6_ns_input+0x3bc r9 0x1 r10 0xd55e0981e2c3a747 r11 0x54fdae0b308ed233 r12 0 r13 0x2 r14 0 r15 0xffff800000c5fa00 rip 0xffffffff822bee58 nd6_dad_duplicated+0x28 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021166b10 ss 0x10 nd6_dad_duplicated+0x28: movq 0x10(%r14),%r13 ddb{0}> show proc PROC (softnet) pid=232224 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021148540,0xffff800021148010 process=0xffff8000ffffd0c0 user=0xffff800021162000, vmspace=0xffffffff829c7ff0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 30626 390875 80678 0 2 0 syz-executor.1 30626 267298 80678 0 2 0x4000000 syz-executor.1 17366 231002 13538 0 2 0x2 syz-executor.0 40866 321529 1 0 3 0x100083 ttyin getty 80678 153688 13538 0 2 0x482 syz-executor.1 32434 477814 0 0 3 0x14280 nfsidl nfsio 86523 337485 0 0 3 0x14280 nfsidl nfsio 29503 446976 0 0 3 0x14280 nfsidl nfsio 93557 423536 0 0 3 0x14280 nfsidl nfsio 63923 185169 0 0 3 0x14280 nfsidl nfsio 46986 432628 0 0 3 0x14280 nfsidl nfsio 87367 397974 0 0 3 0x14280 nfsidl nfsio 61263 316889 0 0 3 0x14280 nfsidl nfsio 70437 459122 0 0 3 0x14280 nfsidl nfsio 28046 333983 0 0 3 0x14280 nfsidl nfsio 88031 356030 0 0 3 0x14280 nfsidl nfsio 69230 145738 0 0 3 0x14280 nfsidl nfsio 46484 332497 0 0 3 0x14280 nfsidl nfsio 98591 342043 0 0 3 0x14280 nfsidl nfsio 85081 343402 0 0 3 0x14280 nfsidl nfsio 72465 145424 0 0 3 0x14280 nfsidl nfsio 73382 471747 0 0 3 0x14280 nfsidl nfsio 90558 204668 0 0 3 0x14280 nfsidl nfsio 52467 415680 0 0 3 0x14280 nfsidl nfsio 98901 198440 0 0 3 0x14280 nfsidl nfsio 19190 318459 0 0 3 0x14200 bored sosplice 13538 96157 4373 0 3 0x82 thrsleep syz-fuzzer 13538 346000 4373 0 3 0x4000082 thrsleep syz-fuzzer 13538 283419 4373 0 3 0x4000082 thrsleep syz-fuzzer 13538 335555 4373 0 3 0x4000082 thrsleep syz-fuzzer 13538 341114 4373 0 3 0x4000082 thrsleep syz-fuzzer 13538 466316 4373 0 3 0x4000082 kqread syz-fuzzer 13538 179099 4373 0 3 0x4000082 thrsleep syz-fuzzer 13538 345997 4373 0 3 0x4000082 thrsleep syz-fuzzer 4373 4615 33334 0 3 0x10008a sigsusp ksh 33334 466322 48735 0 3 0x9a kqread sshd 48735 390626 1 0 3 0x88 kqread sshd 87101 268115 57790 74 2 0x100492 pflogd 57790 382883 1 0 3 0x80 netio pflogd 7266 106282 9664 73 3 0x100090 kqread syslogd 9664 74244 1 0 3 0x100082 netio syslogd 27618 250271 1 0 3 0x100080 kqread resolvd 78622 414614 0 0 3 0x14200 bored smr 53247 261338 0 0 2 0x14200 zerothread 20671 484334 0 0 3 0x14200 aiodoned aiodoned 25698 177125 0 0 3 0x14200 syncer update 4111 73942 0 0 3 0x14200 cleaner cleaner 25760 487464 0 0 3 0x14200 reaper reaper 92938 397708 0 0 3 0x14200 pgdaemon pagedaemon 20703 366498 0 0 3 0x14200 bored viomb 72947 434675 0 0 3 0x40014200 acpi0 acpi0 40560 63209 0 0 7 0x40014200 idle1 *34006 232224 0 0 7 0x14200 softnet 20078 228670 0 0 2 0x14200 systqmp 98223 511331 0 0 3 0x14200 bored systq 73073 198109 0 0 2 0x40014200 softclock 24535 79010 0 0 3 0x40014200 idle0 1 315057 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 34006 (softnet) thread 0xffff8000211482a0 (232224) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82885178) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 kpageflttrap+0x229 sys/arch/amd64/amd64/trap.c:274 #2 kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 #3 alltraps_kern_meltdown+0x7b #4 nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 #5 nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] #5 nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 #6 icmp6_input+0xabe sys/netinet6/icmp6.c:686 #7 ip_deliver+0x322 sys/netinet/ip_input.c:658 #8 ip6_input_if+0x978 #9 ipv6_input+0x48 sys/netinet6/ip6_input.c:171 #10 if_input_local+0x136 sys/net/if.c:778 #11 loinput+0x4d sys/net/if_loop.c:238 #12 if_input_process+0xd2 sys/net/if.c:843 #13 ifiq_process+0x80 sys/net/ifq.c:773 #14 taskq_thread+0xe6 sys/kern/kern_task.c:449 #15 proc_trampoline+0x1c exclusive rwlock netlock r = 0 (0xffffffff828290f0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 if_input_process+0xa1 sys/net/if.c:843 #2 ifiq_process+0x80 sys/net/ifq.c:773 #3 taskq_thread+0xe6 sys/kern/kern_task.c:449 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182 #1 taskq_thread+0xcb sys/kern/kern_task.c:445 #2 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10135 6446K 6819K 78643K 14071 0 pcb 14 8K 8K 78643K 1178 0 rtable 125 17K 18K 78643K 2475 0 ifaddr 67 19K 19K 78643K 954 0 sysctl 2 0K 0K 78643K 12 0 counters 44 34K 34K 78643K 340 0 ioctlops 0 0K 4K 78643K 2647 0 iov 0 0K 24K 78643K 779 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1292 81K 81K 78643K 3999 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 301 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1722 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 5 13K 25K 78643K 9707 0 sigio 0 0K 0K 78643K 70 0 proc 67 63K 111K 78643K 1628 0 subproc 66 4K 6K 78643K 1315 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 817 0 in_multi 30 2K 2K 78643K 1156 0 ether_multi 1 0K 0K 78643K 149 0 mrt 2 0K 0K 78643K 71 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 97 440K 440K 78643K 97 0 exec 0 0K 2K 78643K 1757 0 pfkey data 0 0K 1K 78643K 11 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 7 26K 26K 78643K 7 0 UVM amap 415 796K 796K 78643K 120462 0 UVM aobj 131 9K 9K 78643K 138 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 1172 0 NDP 8 0K 0K 78643K 288 0 temp 100 4218K 8314K 78643K 190834 0 kqueue 6 10K 32K 78643K 780 0 SYN cache 2 8K 16K 78643K 3 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 120 569 0 568 1 0 1 1 0 8 0 rtentry 112 812 0 776 2 0 2 2 0 8 0 unpcb 128 3689 0 3681 4 3 1 2 0 8 0 syncache 296 42 0 42 19 19 0 1 0 8 0 tcpqe 32 20 0 20 7 7 0 1 0 8 0 tcpcb 736 3353 0 3341 37 35 2 3 0 8 0 arp 120 99 0 93 1 0 1 1 0 8 0 inpcb 304 12911 0 12903 31 30 1 3 0 8 0 rttmr 72 24 0 24 15 15 0 1 0 8 0 nd6 48 195 0 187 2 1 1 1 0 8 0 pkpcb 40 47 0 47 16 16 0 1 0 8 0 kcovpl 48 39 0 37 1 0 1 1 0 8 0 ppxss 1248 32 0 32 20 19 1 1 0 8 1 pfstscr 40 8 0 8 3 3 0 1 0 8 0 pffrag 232 43 0 43 10 9 1 1 0 482 1 pffrnode 88 42 0 42 10 9 1 1 0 8 1 pffrent 40 785 0 785 10 9 1 1 0 8 1 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 71 0 62 5 4 1 2 0 8 0 pftag 88 29 0 28 7 6 1 1 0 8 0 pfqueue 264 2 0 0 1 0 1 1 0 8 0 pfstitem 24 22 0 20 1 0 1 1 0 8 0 pfstkey 112 36 0 34 1 0 1 1 0 8 0 pfstate 320 30 0 28 2 1 1 2 0 8 0 pfrule 1360 265 0 222 4 0 4 4 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 4368 0 4185 46 34 12 17 0 8 0 art_table 32 4370 0 4186 3 1 2 3 0 8 0 art_node 16 807 0 775 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 18 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 1720 0 1710 1 0 1 1 0 8 0 shmpl 112 135 0 7 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 13703 0 12265 92 1 91 91 0 8 0 ffsino 272 13703 0 12265 97 0 97 97 0 8 0 nchpl 144 27479 0 27018 61 42 19 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 81531 0 81531 10 9 1 1 0 8 1 percpumem 16 182 0 148 1 0 1 1 0 8 0 vcpupl 2048 80 0 0 10 0 10 10 0 8 0 vmpool 560 105 0 25 8 2 6 6 0 8 0 pfiaddrpl 120 22 0 15 3 2 1 1 0 8 0 scsiplug 72 4 0 4 2 2 0 1 0 8 0 scxspl 216 100143 0 100143 30 29 1 4 0 8 1 plimitpl 152 671 0 663 1 0 1 1 0 8 0 sigapl 424 9874 0 9824 8 1 7 7 0 8 0 futexpl 64 146386 0 146386 12 11 1 1 0 8 1 knotepl 112 231 0 0 3 0 3 3 0 8 0 kqueuepl 216 1865 0 1858 1 0 1 1 0 8 0 pipepl 336 1543 0 1533 15 12 3 3 0 8 2 fdescpl 496 9835 0 9820 3 0 3 3 0 8 0 filepl 152 55678 0 55544 17 9 8 8 0 8 2 lockfpl 104 2137 0 2136 1 0 1 1 0 8 0 lockfspl 48 655 0 654 1 0 1 1 0 8 0 sessionpl 144 52 0 42 1 0 1 1 0 8 0 pgrppl 48 102 0 92 1 0 1 1 0 8 0 ucredpl 96 7519 0 7509 1 0 1 1 0 8 0 zombiepl 144 9824 0 9824 2 1 1 1 0 8 1 processpl 1072 9874 0 9824 4 0 4 4 0 8 0 procpl 672 24335 0 24277 6 0 6 6 0 8 0 srpgc 96 6 0 6 4 4 0 1 0 8 0 sosppl 168 114 0 114 28 27 1 1 0 8 1 sockpl 480 17408 0 17391 50 45 5 7 0 8 2 mcl64k 65536 21 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 37 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 36 0 0 4 1 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 264 0 0 21 0 21 21 0 8 0 mtagpl 96 32 0 0 1 0 1 1 0 8 0 mbufpl 256 1180 0 0 26 0 26 26 0 8 0 bufpl 280 25120 0 18791 453 0 453 453 0 8 0 anonpl 24 2880479 0 2864275 374 251 123 138 0 186 10 amapchunkpl 152 297193 0 296509 227 186 41 42 0 158 12 amappl16 200 27347 0 26757 274 242 32 45 0 8 0 amappl15 192 1097 0 1093 1 0 1 1 0 8 0 amappl14 184 1701 0 1697 1 0 1 1 0 8 0 amappl13 176 2686 0 2682 1 0 1 1 0 8 0 amappl12 168 1012 0 1009 1 0 1 1 0 8 0 amappl11 160 368 0 355 1 0 1 1 0 8 0 amappl10 152 1224 0 1217 1 0 1 1 0 8 0 amappl9 144 1172 0 1169 1 0 1 1 0 8 0 amappl8 136 2521 0 2410 4 0 4 4 0 8 0 amappl7 128 1557 0 1548 1 0 1 1 0 8 0 amappl6 120 1116 0 1103 1 0 1 1 0 8 0 amappl5 112 7596 0 7574 1 0 1 1 0 8 0 amappl4 104 2409 0 2381 1 0 1 1 0 8 0 amappl3 96 4423 0 4405 1 0 1 1 0 8 0 amappl2 88 14192 0 14148 13 11 2 2 0 8 0 amappl1 80 166558 0 166159 13 3 10 13 0 8 0 amappl 88 118975 0 118753 6 0 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 64 137 0 7 3 0 3 3 0 8 0 uaddrrnd 24 9940 0 9845 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9940 0 9845 1 0 1 1 0 8 0 vmmpekpl 168 63659 0 63620 3 0 3 3 0 8 0 vmmpepl 168 899690 0 897716 532 414 118 120 0 357 24 vmsppl 368 9939 0 9845 9 0 9 9 0 8 0 rwobjpl 56 210730 0 209305 56 33 23 24 0 8 0 pdppl 4096 19888 0 19770 183 62 121 121 0 8 3 pvpl 32 5144533 0 5125137 627 430 197 240 0 265 21 pmappl 224 9939 0 9845 6 0 6 6 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 571 0 157 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace nd6_dad_duplicated(0) at nd6_dad_duplicated+0x28 sys/netinet6/nd6_nbr.c:1265 nd6_ns_input(fffffd8067264a00,28,18) at nd6_ns_input+0xdd4 nd6_dad_ns_input sys/netinet6/nd6_nbr.c:1342 [inline] nd6_ns_input(fffffd8067264a00,28,18) at nd6_ns_input+0xdd4 sys/netinet6/nd6_nbr.c:301 icmp6_input(ffff800021166ff8,ffff800021167004,3a,18) at icmp6_input+0xabe sys/netinet6/icmp6.c:686 ip_deliver(ffff800021166ff8,ffff800021167004,3a,18) at ip_deliver+0x322 sys/netinet/ip_input.c:658 ip6_input_if(ffff800021166ff8,ffff800021167004,29,0,ffff8000006ae000) at ip6_input_if+0x978 ipv6_input(ffff8000006ae000,fffffd805e2c9b00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff8000006ae000,fffffd805e2c9b00,18) at if_input_local+0x136 sys/net/if.c:778 loinput(ffff8000006ae000,fffffd805e2c9b00) at loinput+0x4d sys/net/if_loop.c:238 if_input_process(ffff8000006ae000,ffff800021167138) at if_input_process+0xd2 sys/net/if.c:843 ifiq_process(ffff8000006ae450) at ifiq_process+0x80 sys/net/ifq.c:773 taskq_thread(ffff80000002c000) at taskq_thread+0xe6 sys/kern/kern_task.c:449 end trace frame: 0x0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d38ff0) 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+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d38ff0) 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+0x2eb sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5