panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *341301 88402 0 0x2 0 0 syz-executor.7 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a8f6a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82829ff8,ffffffff8279af57,90,ffffffff82782514) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8007487660,fffffd80778a8ce8,3882000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8007487660,fffffd80778a8ce8,3882000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd80778a8ce8,3882000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd80778a8c98,e20a6c56000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd80778a8c98,e20a6c56000,79151000,4,20) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_lower_lookup(ffff80002959dc80,ffff80002959dcb8,ffff80002959dc00) at uvm_fault_lower_lookup+0x2a4 sys/uvm/uvm_fault.c:1192 uvm_fault_lower(ffff80002959dc80,ffff80002959dcb8,ffff80002959dc00,0) at uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd8068f7baf0,e20a6c59000,0,4) at uvm_fault+0x238 upageflttrap(ffff80002959de00,e20a6c5904b) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002959de00) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x74391820f790, count: 2 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 "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827a8f6a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82829ff8,ffffffff8279af57,90,ffffffff82782514) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8007487660,fffffd80778a8ce8,3882000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8007487660,fffffd80778a8ce8,3882000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd80778a8ce8,3882000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd80778a8c98,e20a6c56000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd80778a8c98,e20a6c56000,79151000,4,20) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_lower_lookup(ffff80002959dc80,ffff80002959dcb8,ffff80002959dc00) at uvm_fault_lower_lookup+0x2a4 sys/uvm/uvm_fault.c:1192 uvm_fault_lower(ffff80002959dc80,ffff80002959dcb8,ffff80002959dc00,0) at uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd8068f7baf0,e20a6c59000,0,4) at uvm_fault+0x238 upageflttrap(ffff80002959de00,e20a6c5904b) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002959de00) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x74391820f790, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002959d700 rbx 0xffffffff82c04ba7 cpu_info_full_primary+0x2ba7 rdx 0 rcx 0xffff80002fe0eab0 rax 0xffffffff82c03ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x41d2a265d8ab5bf0 r11 0xf266a7b362378ca6 r12 0xffffffff82c049a8 cpu_info_full_primary+0x29a8 r13 0 r14 0 r15 0x1 rip 0xffffffff81e39c1c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002959d6f0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.7) tid=341301 pid=88402 tcnt=1 stat=onproc flags process=2 proc=0 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000211ce008,0xffff80002fe0e2c8 process=0xffff8000295da5e0 user=0xffff800029598000, vmspace=0xfffffd8068f7baf0 estcpu=36, cpticks=1, pctcpu=0.4, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 70093 338528 92062 0 2 0 syz-executor.2 70093 373738 92062 0 3 0x4000080 fsleep syz-executor.2 70093 384848 92062 0 2 0x4000000 syz-executor.2 2236 490016 67993 0 2 0 syz-executor.4 2236 241006 67993 0 3 0x4000080 fsleep syz-executor.4 14486 365690 88402 0 3 0x80 nanoslp syz-executor.7 14486 118971 88402 0 3 0x4000080 fsleep syz-executor.7 73519 522961 95271 0 2 0x10 syz-executor.5 73519 360208 95271 0 3 0x4000090 fsleep syz-executor.5 73519 492793 95271 0 3 0x4000090 fsleep syz-executor.5 *88402 341301 21133 0 7 0x2 syz-executor.7 9313 377623 21133 0 2 0x482 syz-executor.3 98092 191352 0 0 3 0x14200 acct acct 60694 411924 0 0 3 0x14280 nfsidl nfsio 79389 52619 0 0 3 0x14280 nfsidl nfsio 48308 145938 0 0 3 0x14280 nfsidl nfsio 24195 490290 0 0 3 0x14280 nfsidl nfsio 71352 338647 0 0 3 0x14280 nfsidl nfsio 43820 222243 0 0 3 0x14280 nfsidl nfsio 5359 462976 0 0 3 0x14280 nfsidl nfsio 50873 91632 0 0 3 0x14280 nfsidl nfsio 87697 359620 0 0 3 0x14280 nfsidl nfsio 65578 181385 0 0 3 0x14280 nfsidl nfsio 92555 301193 0 0 3 0x14280 nfsidl nfsio 2698 292521 0 0 3 0x14280 nfsidl nfsio 1015 139395 0 0 3 0x14280 nfsidl nfsio 68525 515274 0 0 3 0x14280 nfsidl nfsio 45378 372453 0 0 3 0x14280 nfsidl nfsio 92342 48940 0 0 3 0x14280 nfsidl nfsio 25216 506786 0 0 3 0x14280 nfsidl nfsio 79607 280707 0 0 3 0x14280 nfsidl nfsio 21911 408627 0 0 3 0x14280 nfsidl nfsio 52125 36025 0 0 3 0x14280 nfsidl nfsio 38373 70396 21133 0 2 0x482 syz-executor.6 92062 306739 21133 0 3 0x82 nanoslp syz-executor.2 87219 161216 21133 0 2 0x2 syz-executor.0 95271 486976 21133 0 3 0x82 nanoslp syz-executor.5 36291 444074 21133 0 2 0x2 syz-executor.1 34862 162950 0 0 3 0x14200 bored sosplice 67993 295653 21133 0 3 0x82 nanoslp syz-executor.4 6314 87507 66557 0 3 0x100082 netio arp 66557 471477 1 0 3 0x10008a sigsusp sh 21133 39385 73018 0 3 0x2000082 thrsleep syz-fuzzer 21133 108306 73018 0 3 0x6000082 nanoslp syz-fuzzer 21133 398875 73018 0 3 0x6000082 wait syz-fuzzer 21133 70845 73018 0 3 0x6000082 wait syz-fuzzer 21133 513484 73018 0 3 0x6000082 wait syz-fuzzer 21133 523896 73018 0 3 0x6000082 thrsleep syz-fuzzer 21133 28267 73018 0 3 0x6000082 wait syz-fuzzer 21133 321050 73018 0 2 0x6000002 syz-fuzzer 21133 205129 73018 0 3 0x6000082 thrsleep syz-fuzzer 21133 489453 73018 0 3 0x6000082 thrsleep syz-fuzzer 21133 61142 73018 0 3 0x6000082 thrsleep syz-fuzzer 21133 197220 73018 0 3 0x6000082 wait syz-fuzzer 21133 122156 73018 0 3 0x6000082 wait syz-fuzzer 21133 59590 73018 0 3 0x6000082 wait syz-fuzzer 21133 314349 73018 0 3 0x6000082 wait syz-fuzzer 21133 394635 73018 0 3 0x6000082 thrsleep syz-fuzzer 21133 199661 73018 0 2 0x6000002 syz-fuzzer 73018 191568 28967 0 3 0x10008a sigsusp ksh 28967 521704 7102 0 2 0x12 sshd 43091 138609 1 0 3 0x100083 ttyin getty 7102 29091 1 0 3 0x88 kqread sshd 56777 361162 68557 74 3 0x1100092 bpf pflogd 68557 121775 1 0 3 0x80 netio pflogd 10545 520738 21343 73 3 0x1100090 kqread syslogd 21343 411839 1 0 3 0x100082 netio syslogd 690 76706 1 0 3 0x100080 kqread resolvd 58880 85759 92331 77 3 0x100092 kqread dhcpleased 64696 193712 92331 77 3 0x100092 kqread dhcpleased 92331 117729 1 0 3 0x80 kqread dhcpleased 25591 382125 0 0 3 0x14200 bored smr 45916 131814 0 0 2 0x14200 zerothread 70421 4899 0 0 3 0x14200 aiodoned aiodoned 70859 377014 0 0 3 0x14200 syncer update 45764 385856 0 0 3 0x14200 cleaner cleaner 61283 325259 0 0 3 0x14200 reaper reaper 58914 120485 0 0 3 0x14200 pgdaemon pagedaemon 97472 194209 0 0 3 0x14200 bored viomb 51343 241881 0 0 3 0x40014200 acpi0 acpi0 69931 284653 0 0 7 0x40014200 idle1 96494 422165 0 0 3 0x14200 bored softnet3 67408 242506 0 0 3 0x14200 bored softnet2 68294 468066 0 0 3 0x14200 bored softnet1 22302 473253 0 0 2 0x14200 softnet0 59141 442359 0 0 3 0x14200 bored systqmp 32314 389046 0 0 3 0x14200 bored systq 81747 428986 0 0 3 0x14200 tmoslp softclockmp 19804 149 0 0 3 0x40014200 tmoslp softclock 81630 334720 0 0 3 0x40014200 idle0 1 455780 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd80778a8ca8) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pmap_enter+0x1c3 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:423 [inline] #3 pmap_enter+0x1c3 sys/arch/amd64/amd64/pmap.c:2710 #4 uvm_fault_lower_lookup+0x2a4 sys/uvm/uvm_fault.c:1192 #5 uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 #6 uvm_fault+0x238 #7 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 88402 (syz-executor.7) thread 0xffff80002fe0eab0 (341301) exclusive rwlock uobjlk r = 0 (0xfffffd806d466478) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 uvm_fault_lower_lookup+0x4a sys/uvm/uvm_fault.c:1126 #3 uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 #4 uvm_fault+0x238 #5 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8068f7bbe8) #0 witness_lock+0x447 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd80778a8ca8) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pmap_enter+0x1c3 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:423 [inline] #3 pmap_enter+0x1c3 sys/arch/amd64/amd64/pmap.c:2710 #4 uvm_fault_lower_lookup+0x2a4 sys/uvm/uvm_fault.c:1192 #5 uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 #6 uvm_fault+0x238 #7 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 6631K 7278K 78643K 40242 0 pcb 13 20K 24K 78643K 794 0 rtable 247 7K 7K 78643K 963 0 pf 35 10K 10K 78643K 229 0 ifaddr 46 16K 17K 78643K 178 0 ifgroup 60 2K 2K 78643K 375 0 sysctl 4 1K 2K 78643K 14 0 counters 62 36K 36K 78643K 236 0 ioctlops 0 0K 4K 78643K 2200 0 iov 0 0K 32K 78643K 810 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1619 101K 101K 78643K 9401 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 169 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 631 0 dirhash 12 2K 2K 78643K 42 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 93K 78643K 11872 0 sigio 0 0K 0K 78643K 651 0 proc 70 91K 115K 78643K 1399 0 subproc 117 7K 7K 78643K 273 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 9415 0 in_multi 99 7K 7K 78643K 343 0 ether_multi 1 0K 0K 78643K 13 0 mrt 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 115 519K 519K 78643K 115 0 exec 0 0K 1K 78643K 1901 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 518 512K 513K 78643K 113058 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 227 0 NDP 15 0K 0K 78643K 140 0 temp 74 5920K 6047K 78643K 148001 0 kqueue 12 18K 29K 78643K 647 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 120 279 0 275 1 0 1 1 0 8 0 rtentry 112 267 0 152 4 0 4 4 0 8 0 unpcb 144 8968 0 8951 107 105 2 10 0 8 1 syncache 312 99 0 99 14 14 0 1 0 8 0 tcpqe 32 914 0 914 14 14 0 1 0 8 0 tcpcb 808 10599 0 10583 216 207 9 21 0 8 7 arp 120 46 0 27 1 0 1 1 0 8 0 ipq 40 3 0 3 1 1 0 1 0 8 0 ipqe 40 9 0 9 1 1 0 1 0 8 0 inpcb 368 14359 0 14335 217 208 9 19 0 8 6 nd6 136 69 0 41 2 0 2 2 0 8 1 pkpcb 40 78 0 78 5 5 0 1 0 8 0 kcovpl 48 21 0 12 1 0 1 1 0 8 0 ppxss 1256 21 0 21 6 6 0 1 0 8 0 pffrag 232 117 0 112 2 1 1 1 0 482 0 pffrnode 88 115 0 110 2 1 1 1 0 8 0 pffrent 40 424 0 419 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 24 307 0 285 1 0 1 1 0 8 0 pfstkey 128 307 0 285 4 2 2 2 0 8 0 pfstate 376 307 0 285 13 9 4 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 1031 0 557 31 0 31 31 0 8 1 art_table 32 1032 0 557 4 0 4 4 0 8 0 art_node 16 257 0 152 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 11 1 0 1 1 0 8 0 semapl 112 623 0 613 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 17888 0 16402 93 0 93 93 0 8 0 ffsino 272 17888 0 16402 100 0 100 100 0 8 0 nchpl 144 34632 0 32968 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 112420 0 112420 10 9 1 2 0 8 1 percpumem 16 131 0 87 1 0 1 1 0 8 0 vcpupl 2048 254 0 1 32 0 32 32 0 8 0 vmpool 696 378 0 125 26 3 23 24 0 8 0 kstatmem 264 200 0 174 3 1 2 3 0 8 0 scxspl 216 107589 0 107589 21 18 3 8 1 8 3 plimitpl 152 1217 0 1200 1 0 1 1 0 8 0 sigapl 424 12236 0 12164 16 7 9 9 0 8 0 futexpl 64 109868 0 109863 9 8 1 1 0 8 0 knotepl 120 642 0 0 19 4 15 19 0 8 0 kqueuepl 216 2067 0 2059 47 46 1 5 0 8 0 pipepl 320 2364 0 2333 64 55 9 9 0 8 6 fdescpl 496 12153 0 12124 12 7 5 5 0 8 1 filepl 152 77655 0 77393 178 162 16 23 0 8 5 lockfpl 104 9172 0 9170 19 18 1 4 0 8 0 lockfspl 48 2596 0 2594 1 0 1 1 0 8 0 sessionpl 144 37 0 19 1 0 1 1 0 8 0 pgrppl 48 258 0 240 1 0 1 1 0 8 0 ucredpl 104 9844 0 9830 1 0 1 1 0 8 0 zombiepl 144 12167 0 12164 5 4 1 1 0 8 0 processpl 1072 12236 0 12164 7 2 5 5 0 8 0 procpl 680 29787 0 29693 18 9 9 10 0 8 0 sosppl 168 125 0 125 13 12 1 1 0 8 1 sockpl 488 23740 0 23699 590 576 14 35 0 8 8 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 12 0 0 2 0 2 2 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 24 0 0 3 0 3 3 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 599 0 0 55 8 47 55 0 8 1 mtagpl 96 1463 0 0 31 0 31 31 0 8 0 mbufpl 256 2137 0 0 97 0 97 97 0 8 0 bufpl 288 24168 0 17847 452 0 452 452 0 8 0 anonpl 24 1255891 0 1242203 267 131 136 195 0 186 0 amapchunkpl 152 358943 0 358008 145 103 42 75 0 158 1 amappl16 200 24665 0 23895 158 116 42 54 0 8 1 amappl15 192 20 0 19 1 0 1 1 0 8 0 amappl14 184 210 0 194 2 1 1 2 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 13017 0 12985 3 1 2 2 0 8 0 amappl11 160 63 0 49 1 0 1 1 0 8 0 amappl10 152 37 0 27 1 0 1 1 0 8 0 amappl9 144 253 0 252 1 0 1 1 0 8 0 amappl8 136 581 0 458 5 0 5 5 0 8 0 amappl7 128 275 0 245 2 0 2 2 0 8 0 amappl6 120 565 0 550 1 0 1 1 0 8 0 amappl5 112 383 0 369 1 0 1 1 0 8 0 amappl4 104 728 0 689 7 5 2 2 0 8 0 amappl3 96 70032 0 69947 7 4 3 3 0 8 0 amappl2 88 14263 0 14180 3 1 2 3 0 8 0 amappl1 80 52274 0 51688 24 11 13 23 0 8 0 amappl 88 111051 0 110763 12 4 8 8 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 12531 0 12249 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 12531 0 12249 2 0 2 2 0 8 0 vmmpekpl 168 83729 0 83625 6 1 5 5 0 8 0 vmmpepl 168 714933 0 711879 414 242 172 172 0 357 30 vmsppl 464 12530 0 12249 39 3 36 36 0 8 0 rwobjpl 56 172315 0 164234 132 16 116 118 0 8 0 pdppl 4096 25070 0 24751 811 485 326 328 0 8 7 pvpl 32 3384087 0 3364145 658 423 235 356 0 265 0 pmappl 248 12530 0 12249 20 2 18 18 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2167 0 948 36 0 36 36 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 panic(ffffffff827a8f6a) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82829ff8,ffffffff8279af57,90,ffffffff82782514) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8007487660,fffffd80778a8ce8,3882000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8007487660,fffffd80778a8ce8,3882000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd80778a8ce8,3882000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd80778a8c98,e20a6c56000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd80778a8c98,e20a6c56000,79151000,4,20) at pmap_enter+0x2be sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_lower_lookup(ffff80002959dc80,ffff80002959dcb8,ffff80002959dc00) at uvm_fault_lower_lookup+0x2a4 sys/uvm/uvm_fault.c:1192 uvm_fault_lower(ffff80002959dc80,ffff80002959dcb8,ffff80002959dc00,0) at uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd8068f7baf0,e20a6c59000,0,4) at uvm_fault+0x238 upageflttrap(ffff80002959de00,e20a6c5904b) at upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002959de00) at usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x74391820f790, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d48ff0) 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(ffff800020d48ff0) at sched_idle+0x41e sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d48ff0) 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(ffff800020d48ff0) at sched_idle+0x41e sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5