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 * 10881 2396 0 0x8000000 0x4000000 1 syz-executor.5 419632 72933 0 0x14000 0x40000200 0 softclock db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82958834) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290dd82,ffffffff828b561a,90,ffffffff82914f9f) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8008306900,fffffd8070b23318,12b1b8000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd8070b23318,12b1b8000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd8070b232e8,256371bd000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd8070b232e8,256371bd000,70867000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80003737c810,ffff80003737c848,ffff80003737c710,ffff80003737c790) at uvm_fault_upper_lookup+0x2b2 uvm_fault(fffffd806b4d8018,256371be000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80003737c990,256371be9a0) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003737c990) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x256717791b0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82958834) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290dd82,ffffffff828b561a,90,ffffffff82914f9f) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8008306900,fffffd8070b23318,12b1b8000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd8070b23318,12b1b8000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd8070b232e8,256371bd000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd8070b232e8,256371bd000,70867000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80003737c810,ffff80003737c848,ffff80003737c710,ffff80003737c790) at uvm_fault_upper_lookup+0x2b2 uvm_fault(fffffd806b4d8018,256371be000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80003737c990,256371be9a0) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003737c990) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x256717791b0, count: -12 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003737c330 rbx 0xffff800029ceccdf rdx 0xffff800000df3c00 rcx 0xffff8000ffffc2a0 rax 0xffff800029cebff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x89203128adfbaed5 r11 0xf2ab83ab57ba44d4 r12 0xffff800029cecae0 r13 0 r14 0 r15 0x1 rip 0xffffffff815a061c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80003737c320 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.5) tid=10881 pid=2396 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a23a2b8,0xffff8000ffffd210 process=0xffff80002a15a388 user=0xffff800037377000, vmspace=0xfffffd806b4d8018 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 47677 113189 86552 0 2 0x8000000 syz-executor.3 47677 295814 86552 0 2 0xc000000 syz-executor.3 47677 97610 86552 0 3 0xc000080 fsleep syz-executor.3 86617 418726 37304 0 2 0x8000480 syz-executor.4 86617 358775 37304 0 3 0xc000080 ttyin syz-executor.4 86617 232096 37304 0 3 0xc000080 fsleep syz-executor.4 2396 72066 90790 0 2 0x8000000 syz-executor.5 * 2396 10881 90790 0 7 0xc000000 syz-executor.5 56615 190714 5138 0 3 0x8000080 nanoslp syz-executor.2 56615 110783 5138 0 3 0xc000080 ttyopn syz-executor.2 56615 350230 5138 0 3 0xc000080 fsleep syz-executor.2 64373 152283 0 0 3 0x14200 acct acct 49375 430004 5552 0 3 0x8000080 nanoslp syz-executor.0 49375 507537 5552 0 3 0xc000080 sbwait syz-executor.0 5138 254298 99051 0 2 0x8000482 syz-executor.2 37304 260590 99051 0 2 0x8000482 syz-executor.4 61662 389352 99051 0 2 0x8000482 syz-executor.1 85494 511008 99051 0 2 0x8000002 syz-executor.6 61598 285389 1 0 3 0x18100083 ttyin getty 86552 54873 99051 0 2 0x8000482 syz-executor.3 90790 71991 99051 0 2 0x8000482 syz-executor.5 78396 122331 99051 0 2 0x8000482 syz-executor.7 5552 210367 99051 0 3 0x8000082 nanoslp syz-executor.0 62710 98533 0 0 3 0x14200 bored sosplice 99051 425181 43991 0 3 0x1a000082 wait syz-fuzzer 99051 434505 43991 0 3 0x1e000082 nanoslp syz-fuzzer 99051 207160 43991 0 3 0x1e000082 kqread syz-fuzzer 99051 232886 43991 0 3 0x1e000082 thrsleep syz-fuzzer 99051 331853 43991 0 3 0x1e000082 wait syz-fuzzer 99051 153180 43991 0 3 0x1e000082 wait syz-fuzzer 99051 94833 43991 0 3 0x1e000082 wait syz-fuzzer 99051 162971 43991 0 3 0x1e000082 thrsleep syz-fuzzer 99051 397959 43991 0 3 0x1e000082 wait syz-fuzzer 99051 132372 43991 0 3 0x1e000082 thrsleep syz-fuzzer 99051 216956 43991 0 3 0x1e000082 thrsleep syz-fuzzer 99051 184302 43991 0 3 0x1e000082 wait syz-fuzzer 99051 90759 43991 0 3 0x1e000082 wait syz-fuzzer 99051 191980 43991 0 3 0x1e000082 thrsleep syz-fuzzer 99051 7580 43991 0 3 0x1e000082 wait syz-fuzzer 99051 62702 43991 0 3 0x1e000082 thrsleep syz-fuzzer 43991 225982 62608 0 3 0x810008a sigsusp ksh 62608 289024 19527 0 3 0x1800009a kqread sshd 19527 116641 1 0 3 0x18000088 kqread sshd 83621 518412 14064 74 3 0x19100092 bpf pflogd 14064 361151 1 0 3 0x18000080 sbwait pflogd 22951 286735 42331 73 3 0x19100090 kqread syslogd 42331 83972 1 0 3 0x18100082 sbwait syslogd 7984 249489 1 0 3 0x18100080 kqread resolvd 39383 288095 25332 77 3 0x18100092 kqread dhcpleased 93009 62652 25332 77 3 0x18100092 kqread dhcpleased 25332 72084 1 0 3 0x18000080 kqread dhcpleased 88837 87597 0 0 3 0x14200 bored smr 35057 137810 0 0 2 0x14200 zerothread 22938 425886 0 0 3 0x14200 aiodoned aiodoned 41762 155560 0 0 3 0x14200 syncer update 83900 82442 0 0 3 0x14200 cleaner cleaner 62672 120002 0 0 3 0x14200 reaper reaper 8692 499438 0 0 3 0x14200 pgdaemon pagedaemon 21726 272101 0 0 3 0x14200 bored viomb 49181 11986 0 0 3 0x40014200 acpi0 acpi0 92402 43330 0 0 3 0x40014200 idle1 10272 195288 0 0 3 0x14200 bored softnet3 38799 497033 0 0 3 0x14200 bored softnet2 51673 183633 0 0 3 0x14200 bored softnet1 36042 97355 0 0 3 0x14200 bored softnet0 68793 193141 0 0 3 0x14200 bored systqmp 1618 403103 0 0 3 0x14200 bored systq 17758 400595 0 0 2 0x14200 softclockmp 72933 419632 0 0 7 0x40014200 softclock 28304 296671 0 0 3 0x40014200 idle0 1 191436 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd8070b232f8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 pmap_enter+0x1c6 rcr3 machine/cpufunc.h:141 [inline] #3 pmap_enter+0x1c6 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] #3 pmap_enter+0x1c6 sys/arch/amd64/amd64/pmap.c:2716 #4 uvm_fault_upper_lookup+0x2b2 #5 uvm_fault+0x129 sys/uvm/uvm_fault.c:605 #6 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 47677 (syz-executor.3) thread 0xffff8000ffff3c60 (295814) Process 2396 (syz-executor.5) thread 0xffff8000ffffc2a0 (10881) Process 85494 (syz-executor.6) thread 0xffff8000ffff39d0 (511008) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10242 6525K 7113K 166960K 15143 0 pcb 17 12K 13K 166960K 529 0 rtable 228 15K 16K 166960K 1391 0 pf 41 11K 11K 166960K 191 0 ifaddr 45 15K 16K 166960K 204 0 ifgroup 74 3K 3K 166960K 323 0 sysctl 4 1K 2K 166960K 9 0 counters 70 37K 37K 166960K 208 0 ioctlops 0 0K 4K 166960K 1715 0 iov 0 0K 24K 166960K 224 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1438 90K 91K 166960K 3734 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 90 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 212 0 dirhash 15 2K 2K 166960K 78 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 15 53K 89K 166960K 3332 0 sigio 1 0K 0K 166960K 144 0 proc 70 91K 128K 166960K 1532 0 subproc 104 6K 7K 166960K 444 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 628 0 in_multi 93 6K 7K 166960K 513 0 ether_multi 1 0K 0K 166960K 17 0 mrt 3 0K 0K 166960K 12 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 1253 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 319 191K 206K 166960K 31210 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 108K 166960K 5192 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 253 0 NDP 15 0K 2K 166960K 150 0 temp 78 6816K 7312K 166960K 87747 0 kqueue 15 24K 31K 166960K 531 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 120 339 0 336 1 0 1 1 0 8 0 rtentry 112 463 0 363 4 0 4 4 0 8 0 unpcb 144 2524 0 2509 8 6 2 3 0 8 1 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 36 0 36 1 1 0 1 0 8 0 tcpcb 808 868 0 862 13 11 2 7 0 8 1 arp 120 89 0 74 1 0 1 1 0 8 0 inpcb 384 3377 0 3365 12 10 2 5 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 136 117 0 93 3 1 2 2 0 8 0 pkpcb 40 28 0 28 10 10 0 1 0 8 0 kcovpl 48 34 0 26 1 0 1 1 0 8 0 ppxss 1168 14 0 14 5 4 1 1 0 8 1 pffrag 232 29 0 26 1 0 1 1 0 482 0 pffrnode 88 29 0 26 1 0 1 1 0 8 0 pffrent 40 310 0 307 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 24 259 0 211 1 0 1 1 0 8 0 pfstkey 128 259 0 211 3 0 3 3 0 8 0 pfstate 376 259 0 211 9 0 9 9 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 1693 0 1236 37 7 30 31 0 8 0 art_table 32 1694 0 1236 4 0 4 4 0 8 0 art_node 16 454 0 367 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 13 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 209 0 199 1 0 1 1 0 8 0 dirhash 1024 61 0 42 3 0 3 3 0 8 0 dino2pl 256 6927 0 5382 97 0 97 97 0 8 0 ffsino 272 6927 0 5382 104 0 104 104 0 8 0 nchpl 144 11877 0 10137 67 0 67 67 0 8 0 uvmvnodes 80 8532 0 0 175 0 175 175 0 8 0 vnodes 216 8532 0 0 474 0 474 474 0 8 0 namei 1024 40962 0 40961 7 6 1 2 0 8 0 percpumem 16 118 0 69 1 0 1 1 0 8 0 vcpupl 3904 22 0 4 3 0 3 3 0 8 0 vmpool 696 30 0 12 2 0 2 2 0 8 0 kstatmem 264 168 0 138 3 0 3 3 0 8 0 scsiplug 72 8 0 8 6 6 0 1 0 8 0 scxspl 216 87354 0 87354 22 21 1 8 1 8 1 plimitpl 152 495 0 479 1 0 1 1 0 8 0 sigapl 424 3623 0 3573 11 4 7 9 0 8 0 futexpl 64 50091 0 50088 2 1 1 1 0 8 0 knotepl 120 601 0 0 18 0 18 18 0 8 0 kqueuepl 216 1032 0 1021 6 5 1 5 0 8 0 pipepl 320 694 0 666 10 7 3 8 0 8 0 fdescpl 496 3582 0 3554 5 0 5 5 0 8 0 filepl 152 22810 0 22552 23 10 13 16 0 8 0 lockfpl 104 924 0 920 1 0 1 1 0 8 0 lockfspl 48 385 0 381 1 0 1 1 0 8 0 sessionpl 144 52 0 35 1 0 1 1 0 8 0 pgrppl 48 113 0 96 1 0 1 1 0 8 0 ucredpl 104 3705 0 3692 1 0 1 1 0 8 0 zombiepl 144 3575 0 3573 2 1 1 1 0 8 0 processpl 1136 3623 0 3573 6 1 5 6 0 8 0 procpl 656 7343 0 7270 9 1 8 9 0 8 0 srpgc 96 17 0 17 7 7 0 1 0 8 0 sosppl 168 51 0 51 12 11 1 1 0 8 1 sockpl 664 6313 0 6284 17 12 5 6 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 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 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 434 0 0 55 0 55 55 0 8 0 mtagpl 96 32 0 0 1 0 1 1 0 8 0 mbufpl 256 1236 0 0 71 0 71 71 0 8 0 bufpl 280 14719 0 5369 668 0 668 668 0 8 0 anonpl 24 609709 0 603267 135 67 68 81 0 186 0 amapchunkpl 152 103575 0 102891 92 53 39 46 0 158 6 amappl16 200 13729 0 13595 74 65 9 20 0 8 0 amappl15 192 16 0 16 2 2 0 1 0 8 0 amappl14 184 241 0 227 2 1 1 2 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 4638 0 4608 3 1 2 2 0 8 0 amappl11 160 62 0 48 1 0 1 1 0 8 0 amappl10 152 86 0 76 1 0 1 1 0 8 0 amappl9 144 281 0 281 1 1 0 1 0 8 0 amappl8 136 215 0 179 2 0 2 2 0 8 0 amappl7 128 75 0 58 1 0 1 1 0 8 0 amappl6 120 710 0 694 2 0 2 2 0 8 0 amappl5 112 281 0 265 1 0 1 1 0 8 0 amappl4 104 704 0 666 3 1 2 3 0 8 0 amappl3 96 18993 0 18910 3 0 3 3 0 8 0 amappl2 88 4084 0 4006 4 2 2 4 0 8 0 amappl1 80 21085 0 20544 23 10 13 23 0 8 0 amappl 88 30212 0 30004 7 1 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 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 3612 0 3566 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3612 0 3566 1 0 1 1 0 8 0 vmmpekpl 168 29608 0 29541 4 0 4 4 0 8 0 vmmpepl 168 233661 0 231700 172 71 101 121 0 357 0 vmsppl 440 3611 0 3566 8 2 6 6 0 8 0 rwobjpl 56 68475 0 58760 144 6 138 138 0 8 0 pdppl 4096 7231 0 7150 238 152 86 89 0 8 5 pvpl 32 49016 0 0 396 0 396 396 0 265 0 pmappl 248 3611 0 3566 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 638 0 183 14 0 14 14 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82c9aff0) 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 __mp_lock(ffffffff82db4300) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82db4300) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82db4300,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x491 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19a sys/kern/kern_synch.c:417 msleep(ffffffff82df26e0,ffffffff82d10720,0,ffffffff82959f4d,0) at msleep+0xeb sys/kern/kern_synch.c:249 softclock_thread(ffff8000ffffef60) at softclock_thread+0xcf sys/kern/kern_timeout.c:810 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff82c9aff0) 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 __mp_lock(ffffffff82db4300) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82db4300) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82db4300,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x491 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19a sys/kern/kern_synch.c:417 msleep(ffffffff82df26e0,ffffffff82d10720,0,ffffffff82959f4d,0) at msleep+0xeb sys/kern/kern_synch.c:249 softclock_thread(ffff8000ffffef60) at softclock_thread+0xcf sys/kern/kern_timeout.c:810 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82958834) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290dd82,ffffffff828b561a,90,ffffffff82914f9f) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8008306900,fffffd8070b23318,12b1b8000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd8070b23318,12b1b8000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd8070b232e8,256371bd000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd8070b232e8,256371bd000,70867000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80003737c810,ffff80003737c848,ffff80003737c710,ffff80003737c790) at uvm_fault_upper_lookup+0x2b2 uvm_fault(fffffd806b4d8018,256371be000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80003737c990,256371be9a0) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003737c990) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x256717791b0, count: 3 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82958834) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff8290dd82,ffffffff828b561a,90,ffffffff82914f9f) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8008306900,fffffd8070b23318,12b1b8000,0) at uvm_pagealloc_pg+0x3e9 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd8070b23318,12b1b8000,0,3) at uvm_pagealloc+0x1ed sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd8070b232e8,256371bd000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd8070b232e8,256371bd000,70867000,1,20) at pmap_enter+0x2c6 sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80003737c810,ffff80003737c848,ffff80003737c710,ffff80003737c790) at uvm_fault_upper_lookup+0x2b2 uvm_fault(fffffd806b4d8018,256371be000,0,2) at uvm_fault+0x129 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80003737c990,256371be9a0) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003737c990) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x256717791b0, count: -12