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 *318947 78398 60929 0x8000010 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e3dbb) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83096c94,ffffffff830392af,90,ffffffff83099360) at __assert+0x29 uvm_pagealloc_pg(fffffd80080e35e0,fffffd806be99b08,6c000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806be99b08,6c000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912 pmap_get_ptp(fffffd806be99ab8,1b30f5c000) at pmap_get_ptp+0x1c6 pmap_enter(fffffd806be99ab8,1b30f5c000,69754000,3,20) at pmap_enter+0x389 uvm_fault_lower_lookup(ffff80002a14be40,ffff80002a14be78,ffff80002a14bdc0) at uvm_fault_lower_lookup+0x33c sys/uvm/uvm_fault.c:1192 uvm_fault_lower(ffff80002a14be40,ffff80002a14be78,ffff80002a14bdc0,0) at uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd807e3aa538,1b30f5f000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637 upageflttrap(ffff80002a14bfc0,1b30f5ff37) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a14bfc0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7ec33afe82c0, 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:437 panic(ffffffff830e3dbb) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83096c94,ffffffff830392af,90,ffffffff83099360) at __assert+0x29 uvm_pagealloc_pg(fffffd80080e35e0,fffffd806be99b08,6c000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806be99b08,6c000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912 pmap_get_ptp(fffffd806be99ab8,1b30f5c000) at pmap_get_ptp+0x1c6 pmap_enter(fffffd806be99ab8,1b30f5c000,69754000,3,20) at pmap_enter+0x389 uvm_fault_lower_lookup(ffff80002a14be40,ffff80002a14be78,ffff80002a14bdc0) at uvm_fault_lower_lookup+0x33c sys/uvm/uvm_fault.c:1192 uvm_fault_lower(ffff80002a14be40,ffff80002a14be78,ffff80002a14bdc0,0) at uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd807e3aa538,1b30f5f000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637 upageflttrap(ffff80002a14bfc0,1b30f5ff37) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a14bfc0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7ec33afe82c0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a14b8c0 rbx 0xffffffff834e6d87 cpu_info_full_primary+0x2d87 rdx 0 rcx 0xffff800032d8aa50 rax 0xffffffff834e5ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xb370b72ee962bad1 r11 0x424f271bba4ac401 r12 0xffffffff834e6b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff82b2b545 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a14b8b0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=318947 pid=78398 tcnt=3 stat=onproc flags process=8000010 proc=0 runpri=84, usrpri=84, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800032d8a2b8,0xffff800032d8b990 process=0xffff8000ffff3b08 user=0xffff80002a147000, vmspace=0xfffffd807e3aa538 estcpu=36, cpticks=3, pctcpu=0.0, user=1, sys=1, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20743 87945 26964 0 2 0x8000000 syz-executor 20743 293614 26964 0 3 0xc000080 kqread syz-executor 90354 32857 89254 0 2 0x8000000 syz-executor 90354 4488 89254 0 3 0xc000080 fsleep syz-executor 53224 77530 88375 0 2 0x8000000 syz-executor 53224 157059 88375 0 3 0xc000080 fsleep syz-executor 69805 201846 19244 0 2 0x8000000 syz-executor 69805 380154 19244 0 3 0xc000080 fsleep syz-executor 69805 146162 19244 0 3 0xc000080 fsleep syz-executor 57884 135579 99899 0 2 0x8000000 syz-executor 57884 165789 99899 0 3 0xc000080 lockf syz-executor 57884 92 99899 0 3 0xc000080 fsleep syz-executor 27918 322058 49652 0 2 0x8000000 syz-executor 27918 385575 49652 0 3 0xc000080 lockf syz-executor 27918 277040 49652 0 3 0xc000080 lockf syz-executor 27918 68037 49652 0 3 0xc000080 fsleep syz-executor *78398 318947 17107 60929 7 0x8000010 syz-executor 78398 206502 17107 60929 3 0xc000090 fsleep syz-executor 78398 254556 17107 60929 3 0xc000090 fsleep syz-executor 86928 206622 70342 0 2 0x8000000 syz-executor 86928 299549 70342 0 3 0xc000080 kqsel syz-executor 86928 125414 70342 0 3 0xc000080 fsleep syz-executor 47688 466167 1 0 3 0x18000082 nanoslp getty 49652 399086 45463 0 3 0x8000082 nanoslp syz-executor 17107 285690 45463 0 3 0x8000082 nanoslp syz-executor 26964 245936 45463 0 3 0x8000082 nanoslp syz-executor 89254 265870 45463 0 3 0x8000082 nanoslp syz-executor 88375 152147 45463 0 3 0x8000082 nanoslp syz-executor 19244 214448 45463 0 3 0x8000082 nanoslp syz-executor 99899 242376 45463 0 3 0x8000082 nanoslp syz-executor 70342 261370 45463 0 3 0x8000082 nanoslp syz-executor 55281 199042 0 0 3 0x14200 acct acct 15181 513628 0 0 3 0x14200 bored sosplice 45463 442480 70373 0 2 0x8000002 syz-executor 70373 274957 93504 0 3 0x810008a sigsusp ksh 93504 58180 7164 0 3 0x18000098 kqread sshd-session 7164 317869 8758 0 3 0x18000092 kqread sshd-session 8758 310327 1 0 3 0x18000088 kqread sshd 86978 100425 29227 74 3 0x19100092 bpf pflogd 29227 106219 1 0 3 0x18000080 sbwait pflogd 83412 31016 17047 73 3 0x19100090 kqread syslogd 17047 225074 1 0 3 0x18100082 sbwait syslogd 72488 17938 1 0 3 0x18100080 kqread resolvd 69978 308142 9251 77 3 0x18100092 kqread dhcpleased 69481 10095 9251 77 3 0x18100092 kqread dhcpleased 9251 58588 1 0 3 0x18000080 kqread dhcpleased 41200 233758 0 0 3 0x14200 bored smr 82401 358227 0 0 2 0x14200 zerothread 14017 384838 0 0 3 0x14200 aiodoned aiodoned 50295 149024 0 0 3 0x14200 syncer update 96197 135815 0 0 3 0x14200 cleaner cleaner 98074 339628 0 0 3 0x14200 reaper reaper 81142 201676 0 0 3 0x14200 pgdaemon pagedaemon 87168 55260 0 0 3 0x14200 bored viomb 37402 513865 0 0 3 0x40014200 acpi0 acpi0 68842 408602 0 0 7 0x40014200 idle1 57485 155755 0 0 3 0x14200 bored softnet3 72795 504149 0 0 3 0x14200 bored softnet2 53046 113548 0 0 3 0x14200 bored softnet1 48305 408484 0 0 3 0x14200 bored softnet0 29950 296446 0 0 3 0x14200 bored systqmp 8748 203243 0 0 3 0x14200 bored systq 94921 7934 0 0 3 0x14200 tmoslp softclockmp 33299 363682 0 0 3 0x40014200 tmoslp softclock 79376 418962 0 0 3 0x40014200 idle0 1 393509 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806be99ac8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:430 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2756 #4 uvm_fault_lower_lookup+0x33c sys/uvm/uvm_fault.c:1192 #5 uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227 #6 uvm_fault+0x301 sys/uvm/uvm_fault.c:637 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 78398 (syz-executor) thread 0xffff800032d8aa50 (318947) exclusive rwlock uobjlk r = 0 (0xfffffd806cd6ed68) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 uvm_fault_lower_lookup+0x54 sys/uvm/uvm_fault.c:1126 #3 uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227 #4 uvm_fault+0x301 sys/uvm/uvm_fault.c:637 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd807e3aa628) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806be99ac8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:430 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2756 #4 uvm_fault_lower_lookup+0x33c sys/uvm/uvm_fault.c:1192 #5 uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227 #6 uvm_fault+0x301 sys/uvm/uvm_fault.c:637 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10237 10380K 10739K 166960K 12834 0 pcb 19 13K 14K 166960K 247 0 rtable 230 8K 9K 166960K 2762 0 pf 37 18K 25K 166960K 249 0 ifaddr 43 8K 8K 166960K 367 0 ifgroup 55 2K 2K 166960K 389 0 sysctl 3 0K 2K 166960K 4 0 counters 64 36K 36K 166960K 232 0 ioctlops 0 0K 4K 166960K 1792 0 iov 0 0K 28K 166960K 160 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1492 94K 94K 166960K 3295 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 28 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 115 0 dirhash 15 2K 2K 166960K 24 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 93K 166960K 2050 0 sigio 0 0K 0K 166960K 20 0 proc 70 91K 128K 166960K 2781 0 subproc 104 6K 6K 166960K 1106 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 142 0 in_multi 99 7K 7K 166960K 983 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 2 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 1631 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 259 94K 130K 166960K 16020 0 UVM aobj 33 2K 2K 166960K 36 0 pinsyscall 43 86K 106K 166960K 5125 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 45 0 NDP 14 0K 2K 166960K 266 0 temp 77 6824K 6960K 166960K 58965 0 kqueue 14 22K 27K 166960K 137 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 299 0 294 2 1 1 2 0 8 0 rtentry 112 978 0 876 7 3 4 4 0 8 0 unpcb 144 1528 0 1501 30 28 2 9 0 8 1 syncache 336 4 0 4 3 3 0 1 0 8 0 tcpcb 808 368 0 363 9 8 1 7 0 8 0 arp 120 177 0 159 1 0 1 1 0 8 0 inpcb 336 1688 0 1677 30 25 5 7 0 8 3 nd6 136 262 0 237 1 0 1 1 0 8 0 pkpcb 40 8 0 8 5 4 1 1 0 8 1 kcovpl 48 85 0 77 1 0 1 1 0 8 0 ppxss 1168 3 0 3 2 2 0 1 0 8 0 pfstscr 40 8 0 6 1 0 1 1 0 8 0 pffrag 232 9 0 7 2 1 1 1 0 482 0 pffrnode 88 9 0 7 2 1 1 1 0 8 0 pffrent 40 53 0 51 2 1 1 1 0 8 0 pfosfp 40 1431 0 1006 5 0 5 5 0 8 0 pfosfpen 112 1431 0 714 21 0 21 21 0 8 0 pfrktable 1344 4 0 2 1 0 1 1 0 8 0 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pftag 88 3 0 1 1 0 1 1 0 8 0 pfstitem 24 143 0 105 1 0 1 1 0 8 0 pfstkey 128 150 0 113 2 0 2 2 0 8 0 pfstate 376 144 0 109 4 0 4 4 0 8 0 pfrule 1344 32 0 24 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3909 0 3461 39 10 29 29 0 8 1 art_table 32 3910 0 3461 4 0 4 4 0 8 0 art_node 16 975 0 883 1 0 1 1 0 8 0 sysvmsgpl 40 42 0 2 2 1 1 1 0 8 0 semapl 112 112 0 102 1 0 1 1 0 8 0 shmpl 112 33 0 3 1 0 1 1 0 8 0 dirhash 1024 25 0 6 3 0 3 3 0 8 0 dino2pl 256 3154 0 1490 105 0 105 105 0 8 0 ffsino 272 3154 0 1490 111 0 111 111 0 8 0 nchpl 144 4645 0 3943 66 39 27 64 0 8 0 uvmvnodes 80 4944 0 0 101 0 101 101 0 8 0 vnodes 216 4944 0 0 275 0 275 275 0 8 0 namei 1024 24526 0 24526 9 8 1 2 0 8 1 percpumem 16 130 0 84 1 0 1 1 0 8 0 vcpupl 3904 6 0 1 1 0 1 1 0 8 0 vmpool 696 8 0 3 1 0 1 1 0 8 0 kstatmem 264 192 0 168 2 0 2 2 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 49945 0 49944 11 9 2 6 1 8 1 plimitpl 152 540 0 521 1 0 1 1 0 8 0 sigapl 424 2198 0 2146 8 1 7 7 0 8 0 futexpl 64 16337 0 16328 10 9 1 1 0 8 0 knotepl 120 604 0 0 17 0 17 17 0 8 0 kqueuepl 216 444 0 429 10 9 1 5 0 8 0 pipepl 320 511 0 484 9 6 3 8 0 8 0 fdescpl 496 2177 0 2145 13 8 5 5 0 8 0 filepl 152 12707 0 12420 52 39 13 19 0 8 1 lockfpl 104 489 0 480 2 0 2 2 0 8 1 lockfspl 48 222 0 218 1 0 1 1 0 8 0 sessionpl 144 99 0 91 1 0 1 1 0 8 0 pgrppl 48 229 0 213 1 0 1 1 0 8 0 ucredpl 104 1785 0 1771 1 0 1 1 0 8 0 zombiepl 144 2146 0 2146 1 0 1 1 0 8 1 processpl 1160 2198 0 2146 5 1 4 5 0 8 0 procpl 648 3446 0 3380 7 1 6 6 0 8 0 srpgc 96 8 0 8 2 2 0 1 0 8 0 sosppl 168 3 0 3 2 2 0 1 0 8 0 sockpl 664 3535 0 3492 65 58 7 22 0 8 3 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 260 0 0 30 0 30 30 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 788 0 0 43 0 43 43 0 8 0 bufpl 280 10624 0 3263 527 0 527 527 0 8 0 anonpl 24 372569 0 368982 87 29 58 80 0 185 26 amapchunkpl 152 51759 0 51211 63 28 35 42 0 158 13 amappl16 200 6725 0 6704 35 33 2 14 0 8 0 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 272 0 260 1 0 1 1 0 8 0 amappl13 176 14 0 14 1 1 0 1 0 8 0 amappl12 168 4055 0 4023 4 2 2 3 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 14 0 14 1 1 0 1 0 8 0 amappl9 144 149 0 149 1 1 0 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 274 0 262 1 0 1 1 0 8 0 amappl6 120 937 0 935 1 0 1 1 0 8 0 amappl5 112 439 0 428 1 0 1 1 0 8 0 amappl4 104 554 0 532 1 0 1 1 0 8 0 amappl3 96 9441 0 9315 6 2 4 4 0 8 0 amappl2 88 1702 0 1636 2 0 2 2 0 8 0 amappl1 80 18093 0 17505 16 3 13 14 0 8 0 amappl 88 15020 0 14829 6 1 5 5 0 92 0 dma4096 4096 2 0 2 2 2 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 8 0 8 2 2 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 35 0 3 1 0 1 1 0 8 0 uaddrrnd 24 2185 0 2148 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2185 0 2148 1 0 1 1 0 8 0 vmmpekpl 168 19363 0 19314 4 0 4 4 0 8 0 vmmpepl 168 139552 0 137600 113 26 87 95 0 357 0 vmsppl 440 2184 0 2148 7 2 5 5 0 8 0 rwobjpl 56 46710 0 40767 86 2 84 84 0 8 0 pdppl 4096 4377 0 4301 209 131 78 85 0 8 2 pvpl 32 46179 0 0 373 1 372 372 0 265 0 pmappl 248 2184 0 2148 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 602 0 190 12 0 12 12 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:437 panic(ffffffff830e3dbb) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83096c94,ffffffff830392af,90,ffffffff83099360) at __assert+0x29 uvm_pagealloc_pg(fffffd80080e35e0,fffffd806be99b08,6c000,0) at uvm_pagealloc_pg+0x521 sys/uvm/uvm_page.c:695 uvm_pagealloc(fffffd806be99b08,6c000,0,3) at uvm_pagealloc+0x23e sys/uvm/uvm_page.c:912 pmap_get_ptp(fffffd806be99ab8,1b30f5c000) at pmap_get_ptp+0x1c6 pmap_enter(fffffd806be99ab8,1b30f5c000,69754000,3,20) at pmap_enter+0x389 uvm_fault_lower_lookup(ffff80002a14be40,ffff80002a14be78,ffff80002a14bdc0) at uvm_fault_lower_lookup+0x33c sys/uvm/uvm_fault.c:1192 uvm_fault_lower(ffff80002a14be40,ffff80002a14be78,ffff80002a14bdc0,0) at uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227 uvm_fault(fffffd807e3aa538,1b30f5f000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637 upageflttrap(ffff80002a14bfc0,1b30f5ff37) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a14bfc0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7ec33afe82c0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5