panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *493504 17418 0 0x2 0 0 syz-executor.7 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a9a70) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff826224e0,ffffffff8259d36b,90,ffffffff82585a19) at __assert+0x25 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd80067c7be0,fffffd8065690ad8,d963000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd80067c7be0,fffffd8065690ad8,d963000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd8065690ad8,d963000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd8065690aa8,1b2c621000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1191 pmap_enter(fffffd8065690aa8,1b2c621000,67fd6000,3,20) at pmap_enter+0x2ba sys/arch/amd64/amd64/pmap.c:2705 uvm_fault_lower_lookup(ffff80002ca4dea0,ffff80002ca4ded8,ffff80002ca4de20) at uvm_fault_lower_lookup+0x2a7 sys/uvm/uvm_fault.c:1193 uvm_fault_lower(ffff80002ca4dea0,ffff80002ca4ded8,ffff80002ca4de20,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1228 uvm_fault(fffffd8074f65010,1b2c620000,0,1) at uvm_fault+0x238 upageflttrap(ffff80002ca4e010,1b2c620000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002ca4e010) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc44f0, 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+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a9a70) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff826224e0,ffffffff8259d36b,90,ffffffff82585a19) at __assert+0x25 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd80067c7be0,fffffd8065690ad8,d963000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd80067c7be0,fffffd8065690ad8,d963000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd8065690ad8,d963000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd8065690aa8,1b2c621000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1191 pmap_enter(fffffd8065690aa8,1b2c621000,67fd6000,3,20) at pmap_enter+0x2ba sys/arch/amd64/amd64/pmap.c:2705 uvm_fault_lower_lookup(ffff80002ca4dea0,ffff80002ca4ded8,ffff80002ca4de20) at uvm_fault_lower_lookup+0x2a7 sys/uvm/uvm_fault.c:1193 uvm_fault_lower(ffff80002ca4dea0,ffff80002ca4ded8,ffff80002ca4de20,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1228 uvm_fault(fffffd8074f65010,1b2c620000,0,1) at uvm_fault+0x238 upageflttrap(ffff80002ca4e010,1b2c620000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002ca4e010) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc44f0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002ca4d920 rbx 0xffffffff829bdb8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff800022d42fc0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x16ad2f27f04b3eab r11 0xc96f381bdbcfd1c3 r12 0xffffffff829bd990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff81370d48 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002ca4d910 ss 0 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.7) pid=493504 stat=onproc flags process=2 proc=0 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff800022d42000,0xffff8000213217b0 process=0xffff8000fffeee30 user=0xffff80002ca49000, vmspace=0xfffffd8074f65010 estcpu=36, cpticks=1, pctcpu=0.3 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99695 153246 47716 0 2 0 syz-executor.4 99695 213447 47716 0 3 0x4000080 fsleep syz-executor.4 19076 223205 17418 0 2 0 syz-executor.7 19076 264712 17418 0 2 0x4000000 syz-executor.7 19076 414919 17418 0 2 0x4000000 syz-executor.7 19076 151070 17418 0 2 0x4000000 syz-executor.7 55551 129930 4819 0 2 0 syz-executor.5 55551 370769 4819 0 2 0x4000000 syz-executor.5 55551 391309 4819 0 2 0x4000000 syz-executor.5 16963 249672 6893 0 2 0 syz-executor.2 16963 67717 6893 0 3 0x4000080 fsleep syz-executor.2 16963 72791 6893 0 3 0x4000080 fsleep syz-executor.2 16963 395038 6893 0 3 0x4000080 fsleep syz-executor.2 *17418 493504 15809 0 7 0x2 syz-executor.7 65316 9305 15809 0 3 0x82 nanoslp syz-executor.6 27072 193404 15809 0 3 0x82 nanoslp syz-executor.3 34970 413100 15809 0 2 0x482 syz-executor.1 50868 316646 0 0 3 0x14200 acct acct 5918 94955 15809 0 3 0x82 nanoslp syz-executor.0 4819 103980 15809 0 3 0x82 nanoslp syz-executor.5 47716 391 15809 0 2 0x482 syz-executor.4 6893 343950 15809 0 3 0x82 nanoslp syz-executor.2 66438 48009 1 0 3 0x100083 ttyopn getty 70113 353663 0 0 3 0x14200 bored sosplice 44268 256959 1 0 3 0 vmmaplk syz-executor.3 44268 130083 1 0 3 0x4000000 vmmaplk syz-executor.3 44268 146142 1 0 3 0x4000000 vmmaplk syz-executor.3 4620 61079 99740 0 3 0x100082 netio arp 99740 301377 1 0 3 0x10008a sigsusp sh 15809 367989 62381 0 3 0x82 wait syz-fuzzer 15809 251103 62381 0 3 0x4000082 thrsleep syz-fuzzer 15809 295243 62381 0 3 0x4000082 thrsleep syz-fuzzer 15809 368920 62381 0 3 0x4000082 thrsleep syz-fuzzer 15809 257441 62381 0 3 0x4000082 kqread syz-fuzzer 15809 35554 62381 0 3 0x4000082 thrsleep syz-fuzzer 15809 368382 62381 0 3 0x4000082 wait syz-fuzzer 15809 344459 62381 0 3 0x4000082 thrsleep syz-fuzzer 15809 458429 62381 0 3 0x4000082 thrsleep syz-fuzzer 15809 512330 62381 0 3 0x4000082 wait syz-fuzzer 15809 31328 62381 0 3 0x4000082 wait syz-fuzzer 15809 128855 62381 0 3 0x4000082 wait syz-fuzzer 15809 470945 62381 0 3 0x4000082 wait syz-fuzzer 15809 76197 62381 0 3 0x4000082 wait syz-fuzzer 15809 127023 62381 0 3 0x4000082 wait syz-fuzzer 15809 458349 62381 0 3 0x4000082 thrsleep syz-fuzzer 62381 474586 64065 0 3 0x10008a sigsusp ksh 64065 61333 13882 0 3 0x9a kqread sshd 13882 207143 1 0 3 0x88 kqread sshd 63438 317450 7574 74 3 0x1100092 bpf pflogd 7574 483454 1 0 3 0x80 netio pflogd 14568 500912 90825 73 3 0x1100090 kqread syslogd 90825 353485 1 0 3 0x100082 netio syslogd 33123 201897 1 0 3 0x100080 kqread resolvd 52937 312790 33804 77 3 0x100092 kqread dhcpleased 839 512135 33804 77 3 0x100092 kqread dhcpleased 33804 201444 1 0 3 0x80 kqread dhcpleased 16310 455450 0 0 3 0x14200 bored smr 25635 207401 0 0 2 0x14200 zerothread 81145 258841 0 0 3 0x14200 aiodoned aiodoned 17979 17242 0 0 3 0x14200 syncer update 53235 124110 0 0 3 0x14200 cleaner cleaner 48175 210041 0 0 3 0x14200 reaper reaper 96504 197393 0 0 3 0x14200 pgdaemon pagedaemon 14891 414723 0 0 3 0x14200 bored viomb 77268 397249 0 0 3 0x40014200 acpi0 acpi0 47429 145421 0 0 7 0x40014200 idle1 74458 193725 0 0 3 0x14200 bored softnet 72674 31680 0 0 3 0x14200 bored softnet 58442 118027 0 0 3 0x14200 bored softnet 5741 461750 0 0 3 0x14200 bored softnet 2935 123896 0 0 3 0x14200 bored systqmp 63428 289789 0 0 3 0x14200 bored systq 79719 204252 0 0 3 0x40014200 bored softclock 29479 186061 0 0 3 0x40014200 idle0 1 52739 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 (0xfffffd8065690ab8) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pmap_enter+0x1bf pmap_map_ptes sys/arch/amd64/amd64/pmap.c:420 [inline] #3 pmap_enter+0x1bf sys/arch/amd64/amd64/pmap.c:2699 #4 uvm_fault_lower_lookup+0x2a7 sys/uvm/uvm_fault.c:1193 #5 uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1228 #6 uvm_fault+0x238 #7 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #8 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #9 recall_trap+0x8 Process 17418 (syz-executor.7) thread 0xffff800022d42fc0 (493504) exclusive rwlock uobjlk r = 0 (0xfffffd8077849ec0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 uvm_fault_lower_lookup+0x46 sys/uvm/uvm_fault.c:1127 #3 uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1228 #4 uvm_fault+0x238 #5 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #6 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8074f650b8) #0 witness_lock+0x44d #1 uvmfault_lookup+0xc9 sys/uvm/uvm_fault.c:1773 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:673 #3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #6 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd8065690ab8) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pmap_enter+0x1bf pmap_map_ptes sys/arch/amd64/amd64/pmap.c:420 [inline] #3 pmap_enter+0x1bf sys/arch/amd64/amd64/pmap.c:2699 #4 uvm_fault_lower_lookup+0x2a7 sys/uvm/uvm_fault.c:1193 #5 uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1228 #6 uvm_fault+0x238 #7 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #8 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 #9 recall_trap+0x8 Process 44268 (syz-executor.3) thread 0xffff8000ffff42a8 (130083) shared rwlock vmmaplk r = 0 (0xfffffd8069f04ac8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5332 #3 uvm_map_pageable+0x111 sys/uvm/uvm_map.c:2293 #4 sys_mlock+0x184 sys/uvm/uvm_mmap.c:834 #5 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline] #5 syscall+0x438 sys/arch/amd64/amd64/trap.c:599 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10238 6573K 7410K 78643K 46648 0 pcb 16 22K 30K 78643K 13645 0 rtable 223 9K 10K 78643K 1774 0 ifaddr 89 20K 22K 78643K 626 0 sysctl 2 0K 2K 78643K 10 0 counters 60 35K 36K 78643K 756 0 ioctlops 0 0K 4K 78643K 2885 0 iov 0 0K 32K 78643K 1143 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1500 94K 94K 78643K 12524 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 81 0 VM map 2 1K 1K 78643K 2 0 sem 17 5K 10K 78643K 32 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 93K 78643K 13319 0 sigio 0 0K 0K 78643K 85 0 proc 76 91K 116K 78643K 1686 0 subproc 130 8K 8K 78643K 455 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 500 0 in_multi 96 6K 7K 78643K 637 0 ether_multi 1 0K 0K 78643K 54 0 mrt 1 0K 0K 78643K 49 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 241 1076K 1076K 78643K 241 0 exec 0 0K 1K 78643K 2373 0 pfkey data 0 0K 0K 78643K 68 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 489 541K 542K 78643K 90118 0 UVM aobj 131 4K 4K 78643K 136 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 289 0 NDP 16 0K 1K 78643K 213 0 temp 145 4694K 5718K 78643K 91411 0 kqueue 13 20K 30K 78643K 2177 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 120 494 0 457 8 6 2 4 0 8 0 rtentry 112 561 0 463 4 0 4 4 0 8 0 unpcb 144 7378 0 7363 84 82 2 10 0 8 1 syncache 296 43 0 43 13 12 1 1 0 8 1 tcpqe 32 58 0 58 11 10 1 1 0 8 1 tcpcb 776 2047 0 2043 94 86 8 8 0 8 7 arp 120 77 0 58 1 0 1 1 0 8 0 inpcb 368 30370 0 30359 285 277 8 29 0 8 6 nd6 48 124 0 102 1 0 1 1 0 8 0 pkpcb 40 17 0 17 3 3 0 1 0 8 0 kcovpl 48 35 0 25 1 0 1 1 0 8 0 mppekey 1024 5 0 5 2 2 0 1 0 8 0 ppxss 1256 282 0 282 13 13 0 1 0 8 0 pppxif 1448 165 0 165 8 8 0 1 0 8 0 pfstscr 40 19 0 19 4 4 0 1 0 8 0 pffrag 232 65 0 65 1 1 0 1 0 482 0 pffrnode 88 65 0 65 1 1 0 1 0 8 0 pffrent 40 255 0 255 5 5 0 1 0 8 0 pfosfp 40 1503 0 1076 5 0 5 5 0 8 0 pfosfpen 112 1503 0 785 21 0 21 21 0 8 0 pfanchor 1280 512 1 0 43 0 43 43 0 8 0 pfqueue 264 4 0 4 2 2 0 1 0 8 0 pfstitem 24 343 0 310 1 0 1 1 0 8 0 pfstkey 120 429 0 403 2 1 1 2 0 8 0 pfstate 384 412 0 382 12 8 4 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 12 0 12 4 4 0 1 0 8 0 art_heap8 4096 5 0 4 4 3 1 2 0 8 0 art_heap4 256 2626 0 2185 45 16 29 30 0 8 1 art_table 32 2631 0 2189 4 0 4 4 0 8 0 art_node 16 560 0 475 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 5 0 5 2 2 0 1 0 8 0 semapl 112 23 0 8 1 0 1 1 0 8 0 shmpl 112 133 0 5 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 19630 0 18151 93 0 93 93 0 8 0 ffsino 272 19630 0 18151 99 0 99 99 0 8 0 nchpl 144 38098 0 36452 63 0 63 63 0 8 0 uvmvnodes 80 6359 0 0 130 0 130 130 0 8 0 vnodes 216 6359 0 0 354 0 354 354 0 8 0 namei 1024 143206 0 143206 9 8 1 2 0 8 1 percpumem 16 390 0 348 1 0 1 1 0 8 0 vcpupl 2048 64 0 1 8 0 8 8 0 8 0 vmpool 568 77 0 14 7 2 5 5 0 8 0 kstatmem 264 254 0 226 3 0 3 3 0 8 0 scsiplug 72 11 0 11 4 3 1 1 0 8 1 scxspl 216 110934 0 110934 26 25 1 8 0 8 1 plimitpl 152 927 0 909 1 0 1 1 0 8 0 sigapl 424 13653 0 13600 11 5 6 9 0 8 0 futexpl 64 128918 0 128914 5 4 1 1 0 8 0 knotepl 120 791 0 0 14 0 14 14 0 8 0 kqueuepl 216 3107 0 3098 33 31 2 5 0 8 1 pipepl 320 2704 0 2672 95 89 6 13 0 8 3 fdescpl 496 13553 0 13523 5 0 5 5 0 8 0 filepl 152 100769 0 100461 144 126 18 24 0 8 5 lockfpl 104 12266 0 12264 8 7 1 2 0 8 0 lockfspl 48 2971 0 2969 1 0 1 1 0 8 0 sessionpl 144 52 0 33 1 0 1 1 0 8 0 pgrppl 48 229 0 210 1 0 1 1 0 8 0 ucredpl 104 9678 0 9666 1 0 1 1 0 8 0 zombiepl 144 13604 0 13600 3 2 1 1 0 8 0 processpl 1072 13653 0 13600 5 0 5 5 0 8 0 procpl 672 36271 0 36192 19 11 8 10 0 8 0 srpgc 96 26 0 26 9 9 0 1 0 8 0 sosppl 168 67 0 67 14 14 0 1 0 8 0 sockpl 488 38447 0 38385 684 672 12 42 0 8 3 mcl64k 65536 25 0 0 4 2 2 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 23 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 48 0 0 6 0 6 6 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 544 0 0 53 19 34 53 0 8 0 mtagpl 96 871 0 0 16 0 16 16 0 8 0 mbufpl 256 2081 0 0 96 0 96 96 0 8 0 bufpl 288 21752 0 15420 453 0 453 453 0 8 0 anonpl 24 2557421 0 2541546 249 125 124 144 0 186 0 amapchunkpl 152 249970 0 249202 88 54 34 45 0 158 0 amappl16 200 21900 0 21327 124 91 33 46 0 8 2 amappl15 192 10 0 10 2 2 0 1 0 8 0 amappl14 184 258 0 240 2 0 2 2 0 8 0 amappl13 176 8 0 8 2 2 0 1 0 8 0 amappl12 168 743 0 736 1 0 1 1 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 58 0 44 1 0 1 1 0 8 0 amappl9 144 1002 0 1002 18 17 1 1 0 8 1 amappl8 136 545 0 435 4 0 4 4 0 8 0 amappl7 128 221 0 193 2 0 2 2 0 8 0 amappl6 120 301 0 282 1 0 1 1 0 8 0 amappl5 112 408 0 397 1 0 1 1 0 8 0 amappl4 104 847 0 797 2 0 2 2 0 8 0 amappl3 96 39470 0 39410 2 0 2 2 0 8 0 amappl2 88 14425 0 14343 3 1 2 3 0 8 0 amappl1 80 304270 0 303442 23 4 19 23 0 8 0 amappl 88 89065 0 88828 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 72 135 0 5 3 0 3 3 0 8 0 uaddrrnd 24 13630 0 13537 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 13630 0 13537 1 0 1 1 0 8 0 vmmpekpl 168 100626 0 100550 4 0 4 4 0 8 0 vmmpepl 168 1214280 0 1211068 391 226 165 183 0 357 9 vmsppl 368 13629 0 13537 10 1 9 9 0 8 0 rwobjpl 56 318106 0 309656 141 21 120 120 0 8 0 pdppl 4096 27267 0 27137 486 349 137 138 0 8 7 pvpl 32 5152365 0 5130469 549 329 220 274 0 265 9 pmappl 248 13629 0 13537 8 1 7 7 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1678 0 692 29 0 29 29 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(ffffffff825a9a70) at panic+0x177 sys/kern/subr_prf.c:198 __assert(ffffffff826224e0,ffffffff8259d36b,90,ffffffff82585a19) at __assert+0x25 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd80067c7be0,fffffd8065690ad8,d963000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd80067c7be0,fffffd8065690ad8,d963000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd8065690ad8,d963000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd8065690aa8,1b2c621000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1191 pmap_enter(fffffd8065690aa8,1b2c621000,67fd6000,3,20) at pmap_enter+0x2ba sys/arch/amd64/amd64/pmap.c:2705 uvm_fault_lower_lookup(ffff80002ca4dea0,ffff80002ca4ded8,ffff80002ca4de20) at uvm_fault_lower_lookup+0x2a7 sys/uvm/uvm_fault.c:1193 uvm_fault_lower(ffff80002ca4dea0,ffff80002ca4ded8,ffff80002ca4de20,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1228 uvm_fault(fffffd8074f65010,1b2c620000,0,1) at uvm_fault+0x238 upageflttrap(ffff80002ca4e010,1b2c620000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002ca4e010) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:417 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc44f0, count: -13 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