kernel: page fault trap, code=10 Stopped at 0 TID PID UID PRFLAGS PFLAGS CPU COMMAND *455457 66012 0 0x14000 0x200 0K reaper 0(0,0,0,ffffffff83472ff0,0,0) at 0 timeout_run(fffffd8058944e78) at timeout_run+0x118 softclock_process_kclock_timeout(fffffd8058944e78,0) at softclock_process_kclock_timeout+0x2a2 sys/kern/kern_timeout.c:693 softclock(0) at softclock+0x199 sys/kern/kern_timeout.c:746 softintr_dispatch(0) at softintr_dispatch+0xf6 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 Xspllower() at Xspllower+0x1d printf(ffffffff830d22bb) at printf+0xa3 sys/kern/subr_prf.c:532 uvm_fault_unwire_locked(fffffd8068744010,fc14e0c6000,fc14e2c5000) at uvm_fault_unwire_locked+0x2f2 uvm_unmap_kill_entry_withlock(fffffd8068744010,fffffd807a2d93f0,0) at uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 uvm_map_teardown(fffffd8068744010) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 uvmspace_free(fffffd8068744010) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd96d0) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: 3 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: attempt to execute user address 0x0 in supervisor mode ddb{0}> trace 0(0,0,0,ffffffff83472ff0,0,0) at 0 timeout_run(fffffd8058944e78) at timeout_run+0x118 softclock_process_kclock_timeout(fffffd8058944e78,0) at softclock_process_kclock_timeout+0x2a2 sys/kern/kern_timeout.c:693 softclock(0) at softclock+0x199 sys/kern/kern_timeout.c:746 softintr_dispatch(0) at softintr_dispatch+0xf6 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 Xspllower() at Xspllower+0x1d printf(ffffffff830d22bb) at printf+0xa3 sys/kern/subr_prf.c:532 uvm_fault_unwire_locked(fffffd8068744010,fc14e0c6000,fc14e2c5000) at uvm_fault_unwire_locked+0x2f2 uvm_unmap_kill_entry_withlock(fffffd8068744010,fffffd807a2d93f0,0) at uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 uvm_map_teardown(fffffd8068744010) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 uvmspace_free(fffffd8068744010) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd96d0) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800029fe5800 rbx 0 rdx 0 rcx 0xffff800029fd96d0 rax 0x9 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9643a425a8ddb5b8 r11 0 r12 0 r13 0xffffffff8344e1a0 timeout_spinlock_obj r14 0 r15 0 rip 0 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800029fe57b8 ss 0x10 0 ddb{0}> show proc PROC (reaper) tid=455457 pid=66012 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800029fd9958,0xffff800029fd82a0 process=0xffff800029feb668 user=0xffff800029fe0000, vmspace=0xffffffff835a3808 estcpu=36, cpticks=48, pctcpu=16.19, user=0, sys=44944, intr=180 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91396 28922 59461 0 3 0x82 wait syz-executor 32313 175536 59461 0 3 0x82 wait syz-executor 66295 287544 59461 0 3 0x82 wait syz-executor 54435 199530 59461 0 3 0x82 wait syz-executor 44867 450207 59461 0 3 0x82 wait syz-executor 99485 374143 59461 0 3 0x82 wait syz-executor 60063 20749 59461 0 3 0x82 wait syz-executor 91422 189010 0 0 3 0x14280 nfsidl nfsio 37783 358887 0 0 3 0x14280 nfsidl nfsio 14585 90433 0 0 3 0x14280 nfsidl nfsio 82684 417145 0 0 3 0x14280 nfsidl nfsio 77156 409637 0 0 3 0x14280 nfsidl nfsio 80185 153084 0 0 3 0x14280 nfsidl nfsio 18640 520144 0 0 3 0x14280 nfsidl nfsio 32255 195413 0 0 3 0x14280 nfsidl nfsio 42476 390692 0 0 3 0x14280 nfsidl nfsio 83125 492790 0 0 3 0x14280 nfsidl nfsio 48984 309569 0 0 3 0x14280 nfsidl nfsio 71687 19291 0 0 3 0x14280 nfsidl nfsio 22684 174017 0 0 3 0x14280 nfsidl nfsio 15171 159008 0 0 3 0x14280 nfsidl nfsio 42586 207349 0 0 3 0x14280 nfsidl nfsio 89080 138345 0 0 3 0x14280 nfsidl nfsio 97816 481241 0 0 3 0x14280 nfsidl nfsio 68940 278730 0 0 3 0x14280 nfsidl nfsio 8845 177906 0 0 3 0x14280 nfsidl nfsio 95798 1848 0 0 3 0x14280 nfsidl nfsio 90666 365234 0 0 3 0x14200 acct acct 30676 241090 0 0 3 0x14200 bored sosplice 59461 187311 70697 0 3 0x82 wait syz-executor 70697 76603 16351 0 3 0x10008a sigsusp ksh 16351 159558 44777 0 3 0x98 kqread sshd-session 44777 109914 91832 0 3 0x92 kqread sshd-session 11961 65621 1 0 3 0x100083 ttyin getty 91832 493292 1 0 3 0x88 kqread sshd 56691 390761 16494 74 2 0x1100092 pflogd 16494 81773 1 0 3 0x80 sbwait pflogd 6843 199952 63421 73 2 0x1100010 syslogd 63421 323389 1 0 3 0x100082 sbwait syslogd 42172 148224 1 0 3 0x100080 kqread resolvd 26184 320229 37033 77 3 0x100092 kqread dhcpleased 70063 435285 37033 77 3 0x100092 kqread dhcpleased 37033 165825 1 0 3 0x80 kqread dhcpleased 58194 91486 0 0 2 0x14200 smr 8699 410022 0 0 2 0x14200 zerothread 69982 49086 0 0 3 0x14200 aiodoned aiodoned 89999 426284 0 0 2 0x14600 update 19706 30710 0 0 3 0x14200 cleaner cleaner *66012 455457 0 0 7 0x14200 reaper 91356 413054 0 0 3 0x14200 pgdaemon pagedaemon 95655 494340 0 0 3 0x14200 bored viomb 42058 227622 0 0 3 0x40014200 acpi0 acpi0 85779 159970 0 0 7 0x40014200 idle1 38471 499514 0 0 3 0x14200 bored softnet3 78439 215624 0 0 3 0x14200 bored softnet2 4755 134882 0 0 3 0x14200 bored softnet1 58720 102433 0 0 3 0x14200 bored softnet0 47234 362287 0 0 2 0x14200 systqmp 7278 104297 0 0 3 0x14200 bored systq 49266 189187 0 0 2 0x14200 softclockmp 18281 32695 0 0 2 0x40014200 softclock 72885 203241 0 0 3 0x40014200 idle0 1 445562 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: shared mutex timeout r = 0 (0xffffffff8344e1a0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 timeout_run+0xf1 sys/kern/kern_timeout.c:659 #2 softclock_process_kclock_timeout+0x2a2 sys/kern/kern_timeout.c:693 #3 softclock+0x199 sys/kern/kern_timeout.c:746 #4 softintr_dispatch+0xf6 sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 #6 Xspllower+0x1d #7 printf+0xa3 sys/kern/subr_prf.c:532 #8 uvm_fault_unwire_locked+0x2f2 #9 uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 #10 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 #11 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #12 reaper+0x246 sys/kern/kern_exit.c:480 #13 proc_trampoline+0x10 Process 6843 (syslogd) thread 0xffff8000ffffdbe8 (199952) exclusive rrwlock inode r = 0 (0xfffffd806e1550a0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 66012 (reaper) thread 0xffff800029fd96d0 (455457) exclusive rwlock uobjlk r = 0 (0xfffffd8078ba6600) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 uvm_fault_unwire_locked+0x297 sys/uvm/uvm_fault.c:1682 #3 uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 #4 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 #5 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #6 reaper+0x246 sys/kern/kern_exit.c:480 #7 proc_trampoline+0x10 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff835a3c08) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvm_unmap_kill_entry_withlock+0x62 sys/uvm/uvm_map.c:1860 #2 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 #3 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #4 reaper+0x246 sys/kern/kern_exit.c:480 #5 proc_trampoline+0x10 exclusive rwlock vmmaplk r = 0 (0xfffffd8068744100) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252 #3 uvm_map_teardown+0x5e sys/uvm/uvm_map.c:2466 #4 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #5 reaper+0x246 sys/kern/kern_exit.c:480 #6 proc_trampoline+0x10 shared mutex timeout r = 0 (0xffffffff8344e1a0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 timeout_run+0xf1 sys/kern/kern_timeout.c:659 #2 softclock_process_kclock_timeout+0x2a2 sys/kern/kern_timeout.c:693 #3 softclock+0x199 sys/kern/kern_timeout.c:746 #4 softintr_dispatch+0xf6 sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x27 #6 Xspllower+0x1d #7 printf+0xa3 sys/kern/subr_prf.c:532 #8 uvm_fault_unwire_locked+0x2f2 #9 uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 #10 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 #11 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #12 reaper+0x246 sys/kern/kern_exit.c:480 #13 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10239 14229K 14624K 166960K 17870 0 pcb 17 20K 22K 166960K 794 0 rtable 237 12K 13K 166960K 7348 0 pf 44 19K 27K 166960K 661 0 ifaddr 43 11K 12K 166960K 979 0 ifgroup 59 2K 2K 166960K 1025 0 sysctl 3 0K 2K 166960K 13 0 counters 66 36K 37K 166960K 584 0 ioctlops 0 0K 4K 166960K 2250 0 iov 0 0K 24K 166960K 404 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1588 100K 101K 166960K 8432 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 4 36K 44K 166960K 86 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 325 0 dirhash 15 2K 3K 166960K 78 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 10 33K 89K 166960K 7252 0 sigio 0 0K 0K 166960K 418 0 proc 72 91K 140K 166960K 6928 0 subproc 104 6K 7K 166960K 2888 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 662 0 in_multi 96 7K 7K 166960K 2614 0 ether_multi 1 0K 0K 166960K 38 0 mrt 1 0K 0K 166960K 11 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 3979 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 240 74K 109K 166960K 56484 0 UVM aobj 152 6K 6K 166960K 163 0 pinsyscall 35 70K 106K 166960K 13997 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 209 0 NDP 13 0K 1K 166960K 727 0 temp 75 6824K 7084K 166960K 299714 0 kqueue 13 20K 32K 166960K 686 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 120 865 0 862 4 3 1 3 0 8 0 rtentry 112 2612 0 2515 4 1 3 4 0 8 0 unpcb 144 5104 0 5087 50 49 1 6 0 8 0 syncache 336 29 0 29 14 14 0 1 0 8 0 tcpqe 32 22 0 22 9 9 0 1 0 8 0 tcpcb 808 1702 0 1697 44 42 2 8 0 8 1 arp 120 466 0 448 1 0 1 1 0 8 0 inpcb 336 6317 0 6309 89 87 2 13 0 8 1 nd6 136 709 0 684 1 0 1 1 0 8 0 pkpcb 40 63 0 63 16 16 0 1 0 8 0 kcovpl 48 222 0 214 1 0 1 1 0 8 0 ppxss 1168 38 0 38 16 16 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 64 0 60 2 1 1 1 0 482 0 pffrnode 88 56 0 53 2 1 1 1 0 8 0 pffrent 40 299 0 295 2 1 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 15 0 6 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 1 0 1 1 1 0 1 0 8 0 pfstitem 24 619 0 570 1 0 1 1 0 8 0 pfstkey 128 631 0 583 4 1 3 3 0 8 0 pfstate 376 622 0 576 11 4 7 8 0 8 0 pfrule 1344 35 0 25 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 10480 0 10061 58 31 27 31 0 8 0 art_table 32 10482 0 10061 4 0 4 4 0 8 0 art_node 16 2600 0 2514 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semapl 112 313 0 303 1 0 1 1 0 8 0 shmpl 112 160 0 11 5 0 5 5 0 8 0 dirhash 1024 62 0 42 3 0 3 3 0 8 0 dino2pl 256 9708 0 7777 122 1 121 121 0 8 0 ffsino 272 9708 0 7777 129 0 129 129 0 8 0 nchpl 144 15797 0 14970 72 39 33 71 0 8 0 uvmvnodes 80 9149 0 0 187 0 187 187 0 8 0 vnodes 216 9149 0 0 509 0 509 509 0 8 0 namei 1024 80447 0 80447 20 19 1 3 0 8 1 percpumem 16 306 0 259 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 1 1 0 1 1 0 8 0 kstatmem 264 544 0 518 5 2 3 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 14 0 14 10 10 0 1 0 8 0 scxspl 216 142763 0 142763 21 20 1 8 1 8 1 plimitpl 152 1615 0 1597 1 0 1 1 0 8 0 sigapl 424 7192 0 7120 12 3 9 9 0 8 0 futexpl 64 63991 0 63991 17 16 1 1 0 8 1 knotepl 120 1000 0 0 26 1 25 26 0 8 0 kqueuepl 216 1351 0 1342 17 16 1 5 0 8 0 pipepl 320 1344 0 1317 7 4 3 5 0 8 0 fdescpl 496 7127 0 7103 11 6 5 5 0 8 1 filepl 152 43626 0 43388 103 92 11 18 0 8 1 lockfpl 104 1879 0 1877 3 2 1 2 0 8 0 lockfspl 48 706 0 704 1 0 1 1 0 8 0 sessionpl 144 258 0 249 1 0 1 1 0 8 0 pgrppl 48 512 0 495 1 0 1 1 0 8 0 ucredpl 104 6994 0 6980 1 0 1 1 0 8 0 zombiepl 144 7626 0 7617 6 5 1 1 0 8 0 processpl 1160 7192 0 7120 9 3 6 6 0 8 0 procpl 648 13674 0 13593 11 3 8 8 0 8 0 srpgc 96 46 0 46 15 15 0 1 0 8 0 sosppl 168 33 0 33 13 13 0 1 0 8 0 sockpl 664 12442 0 12414 146 140 6 20 0 8 3 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 476 0 0 29 5 24 28 0 8 0 mtagpl 96 170 0 0 3 1 2 3 0 8 0 mbufpl 256 1809 0 0 94 0 94 94 0 8 0 bufpl 280 21481 0 15001 655 97 558 655 0 8 0 anonpl 24 955006 0 946299 333 280 53 87 0 185 0 amapchunkpl 152 194528 0 193753 166 135 31 44 0 158 0 amappl16 200 16350 0 16328 229 227 2 27 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 590 0 578 1 0 1 1 0 8 0 amappl13 176 18 0 16 1 0 1 1 0 8 0 amappl12 168 11194 0 11164 3 1 2 2 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 14 0 14 2 2 0 1 0 8 0 amappl9 144 150 0 150 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 570 0 557 1 0 1 1 0 8 0 amappl6 120 2306 0 2304 1 0 1 1 0 8 0 amappl5 112 1025 0 1013 1 0 1 1 0 8 0 amappl4 104 1051 0 1031 1 0 1 1 0 8 0 amappl3 96 35466 0 35348 9 5 4 4 0 8 0 amappl2 88 3994 0 3917 4 1 3 3 0 8 0 amappl1 80 47457 0 46892 20 6 14 17 0 8 0 amappl 88 54072 0 53894 6 1 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 3 0 3 1 1 0 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 8 0 8 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 162 0 11 3 0 3 3 0 8 0 uaddrrnd 24 7127 0 7096 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7127 0 7096 1 0 1 1 0 8 0 vmmpekpl 168 58848 0 58791 4 0 4 4 0 8 0 vmmpepl 168 439161 0 437259 242 156 86 106 0 357 0 vmsppl 440 7126 0 7095 7 3 4 5 0 8 0 rwobjpl 56 126769 0 116521 161 11 150 151 0 8 0 pdppl 4096 14261 0 14190 452 381 71 83 0 8 0 pvpl 32 46092 0 0 370 0 370 370 0 265 0 pmappl 248 7126 0 7095 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1083 0 602 14 0 14 14 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace 0(0,0,0,ffffffff83472ff0,0,0) at 0 timeout_run(fffffd8058944e78) at timeout_run+0x118 softclock_process_kclock_timeout(fffffd8058944e78,0) at softclock_process_kclock_timeout+0x2a2 sys/kern/kern_timeout.c:693 softclock(0) at softclock+0x199 sys/kern/kern_timeout.c:746 softintr_dispatch(0) at softintr_dispatch+0xf6 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x27 Xspllower() at Xspllower+0x1d printf(ffffffff830d22bb) at printf+0xa3 sys/kern/subr_prf.c:532 uvm_fault_unwire_locked(fffffd8068744010,fc14e0c6000,fc14e2c5000) at uvm_fault_unwire_locked+0x2f2 uvm_unmap_kill_entry_withlock(fffffd8068744010,fffffd807a2d93f0,0) at uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 uvm_map_teardown(fffffd8068744010) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 uvmspace_free(fffffd8068744010) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd96d0) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) 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:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) 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:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5