panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 144 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 33167 62247 0 0 0 1 syz-executor * 14304 28272 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833a3608) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833de253,ffffffff833d13b3,90,ffffffff83378d36) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pagealloc_pg(fffffd8008b73048,fffffd806c93c558,1fb2000,0) at uvm_pagealloc_pg+0x54b sys/uvm/uvm_page.c:707 uvm_pagealloc(fffffd806c93c558,1fb2000,0,3) at uvm_pagealloc+0x252 sys/uvm/uvm_page.c:913 pmap_get_ptp(fffffd806c93c500,7eca4ef5000) at pmap_get_ptp+0x1d0 sys/arch/amd64/amd64/pmap.c:-1 pmap_enter(fffffd806c93c500,7eca4ef5000,6cdf8000,4,20) at pmap_enter+0x386 sys/arch/amd64/amd64/pmap.c:-1 uvm_fault_lower_lookup(ffff80003c4251b0,ffff80003c4251e8,ffff80003c425130) at uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 uvm_fault_lower(ffff80003c4251b0,ffff80003c4251e8,ffff80003c425130) at uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1348 uvm_fault(fffffd8074750b98,7eca4ef6000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c425350,7eca4ef62cb) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c425350) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72169aa8ba80, 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+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833a3608) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833de253,ffffffff833d13b3,90,ffffffff83378d36) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pagealloc_pg(fffffd8008b73048,fffffd806c93c558,1fb2000,0) at uvm_pagealloc_pg+0x54b sys/uvm/uvm_page.c:707 uvm_pagealloc(fffffd806c93c558,1fb2000,0,3) at uvm_pagealloc+0x252 sys/uvm/uvm_page.c:913 pmap_get_ptp(fffffd806c93c500,7eca4ef5000) at pmap_get_ptp+0x1d0 sys/arch/amd64/amd64/pmap.c:-1 pmap_enter(fffffd806c93c500,7eca4ef5000,6cdf8000,4,20) at pmap_enter+0x386 sys/arch/amd64/amd64/pmap.c:-1 uvm_fault_lower_lookup(ffff80003c4251b0,ffff80003c4251e8,ffff80003c425130) at uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 uvm_fault_lower(ffff80003c4251b0,ffff80003c4251e8,ffff80003c425130) at uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1348 uvm_fault(fffffd8074750b98,7eca4ef6000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c425350,7eca4ef62cb) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c425350) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72169aa8ba80, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c424c30 rbx 0xffffffff83870e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff80003c40cd18 rax 0xffffffff8386fff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc5d8532224571b2 r11 0x95cb47423ff02fc5 r12 0xffffffff83870c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff81f52ef5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c424c20 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=14304 pid=28272 tcnt=3 stat=onproc flags process=0 proc=0 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffeed10,0xffff80003c40d788 process=0xffff80003c42a6a0 user=0xffff80003c420000, vmspace=0xfffffd8074750b98 estcpu=32, cpticks=7, pctcpu=0.6, user=5, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76168 38011 24083 0 3 0x80 nanoslp syz-executor 76168 228906 24083 0 3 0x4000080 fsleep syz-executor 76168 372531 24083 0 3 0x4000080 fsleep syz-executor 76168 263494 24083 0 3 0x4000080 fsleep syz-executor 62247 33167 60065 0 7 0 syz-executor 62247 271070 60065 0 3 0x4000080 pipewr syz-executor 36159 328678 10959 0 3 0x80 nanoslp syz-executor 36159 123360 10959 0 3 0x4000080 kqpoll syz-executor 36159 363923 10959 0 3 0x4000080 fsleep syz-executor 44252 189552 25235 0 3 0x80 nanoslp syz-executor 44252 510491 25235 0 3 0x4000080 fsleep syz-executor 44252 492675 25235 0 3 0x4000080 sbwait syz-executor 81640 254227 21557 0 3 0x80 nanoslp syz-executor 81640 152697 21557 0 3 0x4000080 kqread syz-executor 81640 131860 21557 0 3 0x4000080 fsleep syz-executor 81640 90726 21557 0 3 0x4000080 fsleep syz-executor 552 280661 24378 0 3 0x80 nanoslp syz-executor 552 478214 24378 0 3 0x4000080 pipewr syz-executor 552 323976 24378 0 3 0x4000080 fsleep syz-executor 552 261388 24378 0 3 0x4000080 fsleep syz-executor 91180 394730 0 0 3 0x14200 acct acct *28272 14304 63354 0 7 0 syz-executor 28272 253905 63354 0 3 0x4000080 ttyin syz-executor 28272 205385 63354 0 3 0x4000080 fsleep syz-executor 15102 139677 26574 0 2 0xc80 syz-executor 15102 302457 26574 0 3 0x4000080 kqread syz-executor 15102 17204 26574 0 3 0x4000080 kqread syz-executor 15102 133109 26574 0 3 0x4000080 fsleep syz-executor 60065 108032 21231 0 3 0x82 nanoslp syz-executor 24378 309215 21231 0 3 0x82 nanoslp syz-executor 63354 175597 21231 0 3 0x82 nanoslp syz-executor 24083 366376 21231 0 3 0x82 nanoslp syz-executor 56954 155374 1 0 3 0x100083 ttyin getty 25235 235546 21231 0 3 0x82 nanoslp syz-executor 26574 196694 21231 0 3 0x82 nanoslp syz-executor 10959 404876 21231 0 3 0x82 nanoslp syz-executor 21557 426076 21231 0 3 0x82 nanoslp syz-executor 21231 454133 36299 0 3 0x82 kqread syz-executor 36299 158615 8648 0 3 0x10008a sigsusp ksh 8648 230698 88424 0 3 0x98 kqread sshd-session 88424 463610 45520 0 3 0x92 kqread sshd-session 45520 167725 1 0 3 0x88 kqread sshd 86895 28654 19075 74 3 0x1100092 bpf pflogd 19075 119018 1 0 3 0x80 sbwait pflogd 13789 302163 75339 73 3 0x1100090 kqread syslogd 75339 117202 1 0 3 0x100082 sbwait syslogd 30284 189547 1 0 3 0x100080 kqread resolvd 1021 453489 32441 77 3 0x100092 kqread dhcpleased 31032 270442 32441 77 3 0x100092 kqread dhcpleased 32441 401084 1 0 3 0x80 kqread dhcpleased 31954 198992 0 0 3 0x14200 bored smr 71241 221839 0 0 3 0x14200 pgzero zerothread 40972 72956 0 0 3 0x14200 aiodoned aiodoned 21817 258652 0 0 3 0x14200 syncer update 61557 283309 0 0 3 0x14200 cleaner cleaner 950 137023 0 0 3 0x14200 reaper reaper 65682 461186 0 0 3 0x14200 pgdaemon pagedaemon 55800 77606 0 0 3 0x14200 bored viomb 93872 513172 0 0 3 0x40014200 acpi0 acpi0 24644 309676 0 0 3 0x40014200 idle1 89009 190793 0 0 3 0x14200 bored softnet1 50088 420033 0 0 3 0x14200 bored softnet0 76791 44627 0 0 3 0x14200 smrbar systqmp 99790 352016 0 0 3 0x14200 bored systq 58419 313021 0 0 3 0x14200 tmoslp softclockmp 63376 406119 0 0 3 0x40014200 tmoslp softclock 16619 405052 0 0 3 0x40014200 idle0 1 447733 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c93c510) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2767 #3 uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 #4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1348 #5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #8 recall_trap+0x8 Process 28272 (syz-executor) thread 0xffff80003c40cd18 (14304) exclusive rwlock uobjlk r = 0 (0xfffffd806db0cf00) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 uvm_fault_lower_lookup+0x53 sys/uvm/uvm_fault.c:1214 #3 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1348 #4 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8074750c98) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c93c510) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #2 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2767 #3 uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 #4 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1348 #5 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #8 recall_trap+0x8 Process 76791 (systqmp) thread 0xffff8000ffffe530 (44627) shared rwlock systqmp r = 0 (0xffffffff837a7848) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10265 11258K 12098K 166960K 13554 0 pcb 18 16K 18K 166960K 406 0 rtable 246 12K 12K 166960K 662 0 pf 39 18K 24K 166960K 193 0 ifaddr 43 8K 8K 166960K 136 0 ifgroup 63 2K 2K 166960K 234 0 sysctl 4 1K 9K 166960K 21 0 counters 72 37K 37K 166960K 312 0 ioctlops 0 0K 4K 166960K 1896 0 iov 0 0K 24K 166960K 76 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1426 90K 90K 166960K 2724 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 51 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1566 0 sigio 0 0K 0K 166960K 38 0 proc 73 115K 180K 166960K 794 0 subproc 72 4K 4K 166960K 109 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 191 0 in_multi 88 6K 7K 166960K 186 0 ether_multi 1 0K 0K 166960K 12 0 mrt 0 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 639 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 271 161K 174K 166960K 15727 0 UVM aobj 39 6K 8K 166960K 42 0 pinsyscall 43 86K 102K 166960K 2797 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 73 0 NDP 14 0K 2K 166960K 93 0 temp 77 8672K 8922K 166960K 76291 0 kqueue 14 20K 32K 166960K 304 0 SYN cache 2 8K 16K 166960K 3 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 201 0 195 3 0 3 3 0 8 2 rtentry 176 203 0 108 6 1 5 6 0 8 0 unpcb 144 962 0 938 8 6 2 6 0 8 1 syncache 336 8 0 8 2 1 1 1 0 8 1 tcpqe 32 4 0 4 2 1 1 1 0 8 1 tcpcb 736 750 0 742 10 3 7 7 0 8 6 arp 136 35 0 18 1 0 1 1 0 8 0 inpcb 328 1755 0 1740 10 3 7 7 0 8 5 nd6 152 41 0 18 1 0 1 1 0 8 0 pkpcb 40 11 0 11 2 1 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1192 97 0 97 1 0 1 1 0 8 1 pppxif 1504 12 0 12 2 1 1 1 0 8 1 pffrag 232 11 0 1 1 0 1 1 0 482 0 pffrnode 88 9 0 1 1 0 1 1 0 8 0 pffrent 40 17 0 7 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 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pfstitem 24 94 0 27 1 0 1 1 0 8 0 pfstkey 128 94 0 27 3 0 3 3 0 8 0 pfstate 448 93 0 27 8 0 8 8 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 806 0 413 31 6 25 31 0 8 0 art_table 40 809 0 413 5 0 5 5 0 8 0 art_node 32 202 0 118 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 9 1 0 1 1 0 8 0 semupl 112 4 0 4 3 2 1 1 0 8 1 semapl 112 48 0 38 1 0 1 1 0 8 0 shmpl 112 35 0 1 1 0 1 1 0 8 0 dirhash 1024 40 0 23 3 0 3 3 0 8 0 dino2pl 256 4450 0 2933 96 0 96 96 0 8 0 ffsino 296 4450 0 2933 118 0 118 118 0 8 0 nchpl 144 6529 0 4813 64 0 64 64 0 8 0 rtmask 32 12 0 12 3 2 1 1 0 8 1 vnodes 216 5185 0 0 289 0 289 289 0 8 0 namei 1024 22247 0 22247 2 0 2 2 0 8 2 percpumem 16 171 0 120 1 0 1 1 0 8 0 vcpupl 3968 3 0 1 1 0 1 1 0 8 0 vmpool 840 4 0 2 1 0 1 1 0 8 0 kstatmem 264 144 0 110 4 1 3 3 0 8 0 scsiplug 72 12 0 12 2 1 1 1 0 8 1 scxspl 216 49276 0 49276 12 9 3 8 1 8 3 plimitpl 152 543 0 526 1 0 1 1 0 8 0 sigapl 424 1857 0 1808 7 1 6 7 0 8 0 knotepl 120 553 0 0 17 0 17 17 0 8 0 kqueuepl 224 895 0 878 6 1 5 5 0 8 3 pipepl 344 344 0 313 4 1 3 4 0 8 0 fdescpl 528 1835 0 1803 3 0 3 3 0 8 0 filepl 160 12488 0 12240 23 7 16 18 0 8 5 lockfpl 104 601 0 596 2 1 1 2 0 8 0 lockfspl 48 262 0 258 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 71 0 54 1 0 1 1 0 8 0 ucredpl 104 2107 0 2094 1 0 1 1 0 8 0 zombiepl 144 1808 0 1808 1 0 1 1 0 8 1 processpl 1232 1857 0 1808 5 1 4 5 0 8 0 procpl 664 4267 0 4199 6 0 6 6 0 8 0 sosppl 176 5 0 5 2 1 1 1 0 8 1 sockpl 752 2991 0 2946 19 8 11 17 0 8 6 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 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 111 0 0 14 0 14 14 0 8 0 mcl2k 2048 92 0 0 10 0 10 10 0 8 0 mtagpl 96 76 0 0 2 0 2 2 0 8 0 mbufpl 256 1167 0 0 73 0 73 73 0 8 0 bufpl 280 21403 0 15266 439 0 439 439 0 8 0 anonpl 32 11012 0 0 89 0 89 89 0 246 0 amapchunkpl 152 53653 0 53075 33 2 31 31 0 158 8 amappl16 200 7616 0 7575 41 22 19 22 0 8 8 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 11 0 11 1 1 0 1 0 8 0 amappl13 176 469 0 468 1 0 1 1 0 8 0 amappl12 168 2250 0 2207 3 0 3 3 0 8 0 amappl11 160 19 0 18 2 1 1 1 0 8 0 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 255 0 254 2 1 1 1 0 8 0 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 97 0 95 1 0 1 1 0 8 0 amappl6 120 333 0 319 1 0 1 1 0 8 0 amappl5 112 78 0 68 1 0 1 1 0 8 0 amappl4 104 457 0 428 1 0 1 1 0 8 0 amappl3 96 9476 0 9364 3 0 3 3 0 8 0 amappl2 88 1958 0 1878 2 0 2 2 0 8 0 amappl1 80 16363 0 15766 14 0 14 14 0 8 0 amappl 88 14684 0 14490 5 0 5 5 0 92 0 uvmvnodes 80 157 0 0 4 0 4 4 0 8 0 dma65536 65536 3 0 3 2 1 1 1 0 8 1 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 257 0 257 3 2 1 1 0 8 1 dma64 64 7 0 7 2 1 1 1 0 8 1 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 41 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1836 0 1804 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1836 0 1804 1 0 1 1 0 8 0 vmmpekpl 168 15616 0 15560 3 0 3 3 0 8 0 vmmpepl 168 122843 0 120811 107 5 102 103 0 357 5 vmsppl 488 1835 0 1804 6 1 5 5 0 8 0 rwobjpl 80 35176 0 34000 31 1 30 30 0 8 0 pdppl 4096 3687 0 3614 107 34 73 85 0 8 0 pvpl 32 19556 0 0 159 1 158 158 0 265 0 pmappl 256 1839 0 1806 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 373 0 48 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833a3608) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833de253,ffffffff833d13b3,90,ffffffff83378d36) at __assert+0x29 sys/kern/subr_prf.c:-1 uvm_pagealloc_pg(fffffd8008b73048,fffffd806c93c558,1fb2000,0) at uvm_pagealloc_pg+0x54b sys/uvm/uvm_page.c:707 uvm_pagealloc(fffffd806c93c558,1fb2000,0,3) at uvm_pagealloc+0x252 sys/uvm/uvm_page.c:913 pmap_get_ptp(fffffd806c93c500,7eca4ef5000) at pmap_get_ptp+0x1d0 sys/arch/amd64/amd64/pmap.c:-1 pmap_enter(fffffd806c93c500,7eca4ef5000,6cdf8000,4,20) at pmap_enter+0x386 sys/arch/amd64/amd64/pmap.c:-1 uvm_fault_lower_lookup(ffff80003c4251b0,ffff80003c4251e8,ffff80003c425130) at uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 uvm_fault_lower(ffff80003c4251b0,ffff80003c4251e8,ffff80003c425130) at uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1348 uvm_fault(fffffd8074750b98,7eca4ef6000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c425350,7eca4ef62cb) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c425350) at usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x72169aa8ba80, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x7a886d3a2290, count: 12 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x7a886d3a2290, count: -3