panic: kernel diagnostic assertion "uvm_page_owner_locked_p(pg)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1269 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *103942 13683 0 0x14000 0x200 0K reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a48b1) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b28b,ffffffff82595a09,4f5,ffffffff825cc191) at __assert+0x25 sys/kern/subr_prf.c:157 uvm_pageunwire(fffffd80078ef4e0) at uvm_pageunwire+0x16b sys/uvm/uvm_page.c:1269 uvm_fault_unwire_locked(fffffd806f852458,149cb350000,149cb54f000) at uvm_fault_unwire_locked+0x226 sys/uvm/uvm_fault.c:1682 uvm_unmap_kill_entry_withlock(fffffd806f852458,fffffd80676e6308,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 uvm_map_teardown(fffffd806f852458) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806f852458) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 uvmspace_free(fffffd806f852458) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 reaper(ffff800021233508) at reaper+0x19a sys/kern/kern_exit.c:448 end trace frame: 0x0, count: 6 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: kernel diagnostic assertion "uvm_page_owner_locked_p(pg)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1269 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a48b1) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b28b,ffffffff82595a09,4f5,ffffffff825cc191) at __assert+0x25 sys/kern/subr_prf.c:157 uvm_pageunwire(fffffd80078ef4e0) at uvm_pageunwire+0x16b sys/uvm/uvm_page.c:1269 uvm_fault_unwire_locked(fffffd806f852458,149cb350000,149cb54f000) at uvm_fault_unwire_locked+0x226 sys/uvm/uvm_fault.c:1682 uvm_unmap_kill_entry_withlock(fffffd806f852458,fffffd80676e6308,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 uvm_map_teardown(fffffd806f852458) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806f852458) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 uvmspace_free(fffffd806f852458) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 reaper(ffff800021233508) at reaper+0x19a sys/kern/kern_exit.c:448 end trace frame: 0x0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800021239530 rbx 0xffffffff82922b8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff800021233508 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9dac3729d52f5276 r11 0x8b7e7cdab9c9c647 r12 0xffffffff82922990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff81f03cd8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021239520 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) pid=103942 stat=onproc flags process=14000 proc=200 pri=82, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021233a48,0xffff800021232fd8 process=0xffff8000fffff1e0 user=0xffff800021234000, vmspace=0xffffffff829f58f8 estcpu=36, cpticks=97, pctcpu=18.42 user=0, sys=297, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76313 98076 72081 0 3 0x10008a sigsusp sh 81333 25449 2648 0 3 0x10008a sigsusp sh 76720 39210 4780 0 3 0x10008a sigsusp sh 2648 105116 75760 0 3 0x82 wait syz-executor.1 4780 110413 75760 0 3 0x82 wait syz-executor.4 72081 273062 75760 0 3 0x82 wait syz-executor.2 64160 106822 75760 0 3 0x82 wait syz-executor.6 37388 435723 1 0 3 0x100083 ttyin getty 10410 445704 0 0 3 0x14280 nfsidl nfsio 35792 509468 0 0 3 0x14280 nfsidl nfsio 63974 211626 0 0 3 0x14280 nfsidl nfsio 63178 187462 0 0 3 0x14280 nfsidl nfsio 92067 319155 0 0 3 0x14280 nfsidl nfsio 16261 343971 0 0 3 0x14280 nfsidl nfsio 41761 58646 0 0 3 0x14280 nfsidl nfsio 50379 216580 0 0 3 0x14280 nfsidl nfsio 16627 349357 0 0 3 0x14280 nfsidl nfsio 51178 258885 0 0 3 0x14280 nfsidl nfsio 29984 322223 0 0 3 0x14280 nfsidl nfsio 95038 462990 0 0 3 0x14280 nfsidl nfsio 38821 522093 0 0 3 0x14280 nfsidl nfsio 88122 63734 0 0 3 0x14280 nfsidl nfsio 83973 307993 0 0 3 0x14280 nfsidl nfsio 57250 450029 0 0 3 0x14280 nfsidl nfsio 29012 261578 0 0 3 0x14280 nfsidl nfsio 41477 42555 0 0 3 0x14280 nfsidl nfsio 37056 506510 0 0 3 0x14280 nfsidl nfsio 73261 18049 0 0 3 0x14280 nfsidl nfsio 90706 139721 75760 0 2 0x482 syz-executor.5 93424 319615 75760 0 2 0x482 syz-executor.7 409 354998 0 0 3 0x14200 bored sosplice 75760 268544 91382 0 3 0x82 thrsleep syz-fuzzer 75760 509203 91382 0 2 0x4000482 syz-fuzzer 75760 135146 91382 0 3 0x4000082 wait syz-fuzzer 75760 220940 91382 0 3 0x4000082 wait syz-fuzzer 75760 484057 91382 0 3 0x4000082 wait syz-fuzzer 75760 271129 91382 0 3 0x4000082 wait syz-fuzzer 75760 322593 91382 0 3 0x4000082 thrsleep syz-fuzzer 75760 160584 91382 0 3 0x4000082 thrsleep syz-fuzzer 75760 442783 91382 0 3 0x4000082 thrsleep syz-fuzzer 75760 46824 91382 0 3 0x4000082 wait syz-fuzzer 75760 163036 91382 0 3 0x4000082 thrsleep syz-fuzzer 75760 234319 91382 0 2 0x4000482 syz-fuzzer 75760 508360 91382 0 3 0x4000082 thrsleep syz-fuzzer 75760 25562 91382 0 3 0x4000082 thrsleep syz-fuzzer 75760 394141 91382 0 3 0x4000082 wait syz-fuzzer 75760 507977 91382 0 3 0x4000082 wait syz-fuzzer 75760 113751 91382 0 3 0x4000082 thrsleep syz-fuzzer 91382 488314 10997 0 3 0x10008a sigsusp ksh 10997 301404 39295 0 3 0x9a kqread sshd 39295 294725 1 0 3 0x88 kqread sshd 76896 154912 59814 74 2 0x1100492 pflogd 59814 271219 1 0 3 0x80 netio pflogd 71854 466594 17230 73 2 0x1100010 syslogd 17230 315340 1 0 3 0x100082 netio syslogd 98237 457587 1 0 3 0x100080 kqread resolvd 7634 277001 34192 77 3 0x100092 kqread dhcpleased 74435 231975 34192 77 3 0x100092 kqread dhcpleased 34192 11728 1 0 3 0x80 kqread dhcpleased 18099 31381 0 0 3 0x14200 bored smr 83703 160096 0 0 2 0x14200 zerothread 71082 53161 0 0 3 0x14200 aiodoned aiodoned 19436 447851 0 0 2 0x14600 update 3947 257808 0 0 3 0x14200 cleaner cleaner *13683 103942 0 0 7 0x14200 reaper 3321 351425 0 0 3 0x14200 pgdaemon pagedaemon 64263 376944 0 0 3 0x14200 bored viomb 81873 514370 0 0 3 0x40014200 acpi0 acpi0 91690 15329 0 0 7 0x40014200 idle1 36449 62783 0 0 3 0x14200 bored softnet 97637 299232 0 0 3 0x14200 bored softnet 3257 25801 0 0 3 0x14200 bored softnet 61890 300724 0 0 3 0x14200 bored softnet 41173 383326 0 0 2 0x14200 systqmp 43103 70748 0 0 2 0x14200 systq 24435 253281 0 0 2 0x40014200 softclock 43514 309495 0 0 3 0x40014200 idle0 1 161469 0 0 3 0x82 wait init 0 0 -1 0 2 0x10200 swapper ddb{0}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82b81100) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 uvm_fault_unwire_locked+0x21e sys/uvm/uvm_fault.c:1681 #4 uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 #5 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 #7 reaper+0x19a sys/kern/kern_exit.c:448 #8 proc_trampoline+0x1c Process 71854 (syslogd) thread 0xffff8000ffff7a50 (466594) exclusive rrwlock inode r = 0 (0xfffffd806e78a5f0) #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 sys_fsync+0xf5 sys/kern/vfs_syscalls.c:2935 #6 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #6 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 Process 13683 (reaper) thread 0xffff800021233508 (103942) exclusive rwlock uobjlk r = 0 (0xfffffd806a5f7860) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 uvm_fault_unwire_locked+0x1c6 sys/uvm/uvm_fault.c:1669 #3 uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 #4 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #4 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 #5 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 #6 reaper+0x19a sys/kern/kern_exit.c:448 #7 proc_trampoline+0x1c exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829f8160) #0 witness_lock+0x44d #1 uvm_unmap_kill_entry_withlock+0x4c sys/uvm/uvm_map.c:1886 #2 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #2 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 #3 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 #4 reaper+0x19a sys/kern/kern_exit.c:448 #5 proc_trampoline+0x1c exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82b81100) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 uvm_fault_unwire_locked+0x21e sys/uvm/uvm_fault.c:1681 #4 uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 #5 uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 #7 reaper+0x19a sys/kern/kern_exit.c:448 #8 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10192 6497K 7819K 78643K 76288 0 pcb 13 16K 18K 78643K 518 0 rtable 125 18K 21K 78643K 20816 0 ifaddr 106 25K 31K 78643K 483 0 sysctl 3 1K 1K 78643K 3 0 counters 44 34K 36K 78643K 182 0 ioctlops 0 0K 4K 78643K 5969 0 iov 0 0K 16K 78643K 61359 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1468 92K 92K 78643K 20046 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 109 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 18 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 11 37K 86K 78643K 19363 0 sigio 0 0K 0K 78643K 354 0 proc 77 91K 115K 78643K 1260 0 subproc 78 4K 6K 78643K 371 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 371 0 in_multi 34 2K 7K 78643K 549 0 ether_multi 1 0K 0K 78643K 77 0 mrt 1 0K 0K 78643K 26 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 85 387K 387K 78643K 85 0 exec 0 0K 2K 78643K 2183 0 pfkey data 0 0K 0K 78643K 1 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 346 148K 172K 78643K 99803 0 UVM aobj 131 4K 4K 78643K 135 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 293 0 NDP 9 0K 2K 78643K 132 0 temp 113 4733K 70270K 78643K 165409 0 kqueue 12 18K 24K 78643K 1422 0 SYN cache 2 16K 24K 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 120 266 0 263 3 2 1 2 0 8 0 rtentry 112 10173 0 10139 4 1 3 4 0 8 0 unpcb 144 3224 0 3209 37 36 1 8 0 8 0 syncache 296 45 0 45 8 8 0 1 0 8 0 tcpqe 32 251 17 251 8 8 0 1 0 8 0 tcpcb 768 7361 0 7356 115 114 1 23 0 8 0 arp 120 3329 0 3323 1 0 1 1 0 8 0 inpcb 368 19026 0 19019 219 218 1 22 0 8 0 nd6 48 86 0 80 1 0 1 1 0 8 0 pkpcb 40 13 0 13 3 3 0 1 0 8 0 kcovpl 48 28 0 22 1 0 1 1 0 8 0 ppxss 1256 34 0 34 7 7 0 1 0 8 0 pfstscr 40 12 0 11 1 0 1 1 0 8 0 pffrag 232 45 0 45 4 4 0 1 0 482 0 pffrnode 88 45 0 45 4 4 0 1 0 8 0 pffrent 40 160 0 160 5 5 0 1 0 8 0 pfosfp 40 1433 0 1008 5 0 5 5 0 8 0 pfosfpen 112 1433 0 714 21 0 21 21 0 8 0 pfrktable 1344 22 0 13 1 0 1 1 0 8 0 pfanchor 1280 615 9 103 43 0 43 43 0 8 0 pftag 88 3 0 1 1 0 1 1 0 8 0 pfqueue 264 1 0 1 1 1 0 1 0 8 0 pfstitem 24 141 0 137 1 0 1 1 0 8 0 pfstkey 120 167 0 163 2 0 2 2 0 8 0 pfstate 336 154 0 151 5 3 2 5 0 8 0 pfrule 1360 74 0 64 3 2 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 4999 0 4811 39 14 25 30 0 8 8 art_table 32 5005 0 4816 4 0 4 4 0 8 0 art_node 16 10168 0 10140 1 0 1 1 0 8 0 sysvmsgpl 40 44 0 32 1 0 1 1 0 8 0 semupl 112 7 0 7 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 26289 0 24823 93 0 93 93 0 8 0 ffsino 272 26289 0 24823 99 0 99 99 0 8 0 nchpl 144 48166 0 46521 63 0 63 63 0 8 0 rtmask 32 6 0 6 2 2 0 1 0 8 0 uvmvnodes 80 6317 0 0 129 0 129 129 0 8 0 vnodes 216 6317 0 0 351 0 351 351 0 8 0 namei 1024 140169 0 140169 12 10 2 2 0 8 2 percpumem 16 103 0 69 1 0 1 1 0 8 0 vcpupl 2048 4 0 0 1 0 1 1 0 8 0 vmpool 568 8 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 7 0 3 1 0 1 1 0 8 0 kstatmem 264 142 0 124 3 0 3 3 0 8 0 scsiplug 72 8 0 8 2 2 0 1 0 8 0 scxspl 216 147525 0 147525 12 11 1 8 0 8 1 plimitpl 152 432 0 416 1 0 1 1 0 8 0 sigapl 424 19663 0 19593 10 2 8 8 0 8 0 futexpl 64 152697 0 152697 18 17 1 1 0 8 1 knotepl 120 631 0 0 11 2 9 11 0 8 0 kqueuepl 216 3025 0 3017 40 39 1 5 0 8 0 pipepl 320 6435 0 6411 89 86 3 10 0 8 0 fdescpl 496 19624 0 19600 5 1 4 5 0 8 0 filepl 152 96386 0 96189 127 117 10 20 0 8 0 lockfpl 104 23745 0 23743 34 33 1 4 0 8 0 lockfspl 48 11650 0 11648 9 8 1 2 0 8 0 sessionpl 144 46 0 30 1 0 1 1 0 8 0 pgrppl 48 63 0 47 1 0 1 1 0 8 0 ucredpl 104 4202 0 4190 1 0 1 1 0 8 0 zombiepl 144 19601 0 19593 1 0 1 1 0 8 0 processpl 1064 19663 0 19593 5 0 5 5 0 8 0 procpl 672 44973 0 44885 17 8 9 10 0 8 0 srpgc 96 22 0 22 5 5 0 1 0 8 0 sosppl 168 307 0 307 9 9 0 1 0 8 0 sockpl 488 22533 0 22508 421 417 4 33 0 8 0 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 753 0 0 27 0 27 27 0 8 0 mtagpl 96 1992 0 0 43 2 41 43 0 8 0 mbufpl 256 2686 0 0 143 0 143 143 0 8 0 bufpl 288 31034 0 22412 617 1 616 616 0 8 0 anonpl 24 3328194 0 3311632 358 213 145 170 0 186 37 amapchunkpl 152 293679 0 292765 122 79 43 59 0 158 1 amappl16 200 41883 0 41457 96 69 27 31 0 8 0 amappl15 192 2376 0 2376 3 2 1 1 0 8 1 amappl14 184 1055 0 1051 2 1 1 1 0 8 0 amappl13 176 2309 0 2303 1 0 1 1 0 8 0 amappl12 168 2757 0 2748 1 0 1 1 0 8 0 amappl11 160 2287 0 2266 2 0 2 2 0 8 0 amappl10 152 3117 0 3107 1 0 1 1 0 8 0 amappl9 144 1792 0 1782 1 0 1 1 0 8 0 amappl8 136 5932 0 5784 6 0 6 6 0 8 0 amappl7 128 4920 0 4888 11 9 2 2 0 8 0 amappl6 120 1543 0 1516 2 1 1 2 0 8 0 amappl5 112 19952 0 19935 1 0 1 1 0 8 0 amappl4 104 4259 0 4211 2 0 2 2 0 8 0 amappl3 96 59030 0 58974 2 0 2 2 0 8 0 amappl2 88 22876 0 22805 3 0 3 3 0 8 0 amappl1 80 444976 0 444184 23 5 18 23 0 8 0 amappl 88 98843 0 98654 6 1 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 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 19632 0 19597 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 19632 0 19597 1 0 1 1 0 8 0 vmmpekpl 168 135285 0 135229 4 0 4 4 0 8 0 vmmpepl 168 1827501 0 1824798 219 75 144 144 0 357 6 vmsppl 368 19631 0 19596 5 1 4 4 0 8 0 rwobjpl 56 415303 0 407093 125 9 116 116 0 8 0 pdppl 4096 39271 0 39196 553 478 75 81 0 8 0 pvpl 32 6828519 0 6805053 733 382 351 380 0 265 157 pmappl 248 19631 0 19596 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1838 0 740 32 0 32 32 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a48b1) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff8261b28b,ffffffff82595a09,4f5,ffffffff825cc191) at __assert+0x25 sys/kern/subr_prf.c:157 uvm_pageunwire(fffffd80078ef4e0) at uvm_pageunwire+0x16b sys/uvm/uvm_page.c:1269 uvm_fault_unwire_locked(fffffd806f852458,149cb350000,149cb54f000) at uvm_fault_unwire_locked+0x226 sys/uvm/uvm_fault.c:1682 uvm_unmap_kill_entry_withlock(fffffd806f852458,fffffd80676e6308,0) at uvm_unmap_kill_entry_withlock+0x67 sys/uvm/uvm_map.c:1888 uvm_map_teardown(fffffd806f852458) at uvm_map_teardown+0x197 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806f852458) at uvm_map_teardown+0x197 sys/uvm/uvm_map.c:2523 uvmspace_free(fffffd806f852458) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436 reaper(ffff800021233508) at reaper+0x19a sys/kern/kern_exit.c:448 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp 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: 10 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