panic: pool_do_get: rwobjpl: page empty Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *471391 50508 0 0x8000000 0 0 syz-executor.6 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82947fb1) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82e75d90,1,ffff80002a2127c8) at pool_do_get+0x40f sys/kern/subr_pool.c:726 pool_get(ffffffff82e75d90,1) at pool_get+0xf0 sys/kern/subr_pool.c:582 _rw_obj_alloc_flags(fffffd80793c4c30,ffffffff82932532,0,ffffffff82cc4740) at _rw_obj_alloc_flags+0x44 sys/kern/kern_rwlock.c:556 amap_alloc(1000,2,0) at amap_alloc+0xa7 amap_list_insert sys/uvm/uvm_amap.c:95 [inline] amap_alloc(1000,2,0) at amap_alloc+0xa7 sys/uvm/uvm_amap.c:431 amap_copy(fffffd806b283a68,fffffd8069638b88,2,1,72f8923000,72f8923001) at amap_copy+0x627 sys/uvm/uvm_amap.c:585 uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 uvmfault_amapcopy sys/uvm/uvm_fault.c:250 [inline] uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 sys/uvm/uvm_fault.c:710 uvm_fault(fffffd806b283a68,72f8923000,0,1) at uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 upageflttrap(ffff80002a212ca0,72f8923008) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a212ca0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x722090b107f0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: pool_do_get: rwobjpl: page empty ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82947fb1) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82e75d90,1,ffff80002a2127c8) at pool_do_get+0x40f sys/kern/subr_pool.c:726 pool_get(ffffffff82e75d90,1) at pool_get+0xf0 sys/kern/subr_pool.c:582 _rw_obj_alloc_flags(fffffd80793c4c30,ffffffff82932532,0,ffffffff82cc4740) at _rw_obj_alloc_flags+0x44 sys/kern/kern_rwlock.c:556 amap_alloc(1000,2,0) at amap_alloc+0xa7 amap_list_insert sys/uvm/uvm_amap.c:95 [inline] amap_alloc(1000,2,0) at amap_alloc+0xa7 sys/uvm/uvm_amap.c:431 amap_copy(fffffd806b283a68,fffffd8069638b88,2,1,72f8923000,72f8923001) at amap_copy+0x627 sys/uvm/uvm_amap.c:585 uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 uvmfault_amapcopy sys/uvm/uvm_fault.c:250 [inline] uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 sys/uvm/uvm_fault.c:710 uvm_fault(fffffd806b283a68,72f8923000,0,1) at uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 upageflttrap(ffff80002a212ca0,72f8923008) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a212ca0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x722090b107f0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a212620 rbx 0xffffffff82d1bcdf cpu_info_full_primary+0x2cdf rdx 0 rcx 0xffff80002de93c70 rax 0xffffffff82d1aff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6e9433c4e26a1baf r11 0xae285211b1540a32 r12 0xffffffff82d1bae0 cpu_info_full_primary+0x2ae0 r13 0 r14 0 r15 0x1 rip 0xffffffff8210c9bc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a212610 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.6) tid=471391 pid=50508 tcnt=1 stat=onproc flags process=8000000 proc=0 runpri=81, usrpri=81, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002de927f0,0xffff8000ffffca60 process=0xffff80002ef83568 user=0xffff80002a20d000, vmspace=0xfffffd806b283a68 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *50508 471391 74644 0 7 0x8000000 syz-executor.6 4532 306797 33278 0 2 0x8000000 syz-executor.7 4532 459953 33278 0 3 0xc000080 fsleep syz-executor.7 8622 52144 56062 0 2 0x8000000 syz-executor.5 8622 44940 56062 0 3 0xc000080 netio syz-executor.5 8622 10263 56062 0 3 0xc000080 fsleep syz-executor.5 74165 296417 83799 0 2 0x8000000 syz-executor.0 74165 233002 83799 0 3 0xc000080 netio syz-executor.0 74165 373757 83799 0 2 0xc000000 syz-executor.0 99468 119593 1 0 2 0x8000000 syz-executor.3 99468 435291 1 0 3 0xc000080 fsleep syz-executor.3 44567 404718 32179 0 2 0x8000000 syz-executor.1 44567 337990 32179 0 3 0xc000080 sbwait syz-executor.1 44567 366688 32179 0 3 0xc000080 fsleep syz-executor.1 4836 290809 99841 0 3 0x8000080 nanoslp syz-executor.4 4836 164986 99841 0 2 0xc000000 syz-executor.4 4836 119375 99841 0 3 0xc000080 fsleep syz-executor.4 66598 478315 70213 0 2 0x8000002 syz-executor.2 33278 451344 70213 0 3 0x8000082 nanoslp syz-executor.7 38809 489050 0 0 3 0x14200 acct acct 83799 329117 70213 0 3 0x8000082 nanoslp syz-executor.0 98505 372294 1 0 3 0x8000080 fsleep syz-executor.3 98505 169971 1 0 3 0xc000080 kqsel syz-executor.3 32179 88333 70213 0 3 0x8000082 nanoslp syz-executor.1 36019 215149 0 0 3 0x14280 nfsidl nfsio 61583 12558 0 0 3 0x14280 nfsidl nfsio 41504 351333 0 0 3 0x14280 nfsidl nfsio 48342 55455 0 0 3 0x14280 nfsidl nfsio 59826 30360 0 0 3 0x14280 nfsidl nfsio 78945 82077 0 0 3 0x14280 nfsidl nfsio 59807 483744 0 0 3 0x14280 nfsidl nfsio 88800 438698 0 0 3 0x14280 nfsidl nfsio 76566 19581 0 0 3 0x14280 nfsidl nfsio 55646 401834 0 0 3 0x14280 nfsidl nfsio 14765 36543 0 0 3 0x14280 nfsidl nfsio 59237 89152 0 0 3 0x14280 nfsidl nfsio 71199 198807 0 0 3 0x14280 nfsidl nfsio 56686 361920 0 0 3 0x14280 nfsidl nfsio 56051 206387 0 0 3 0x14280 nfsidl nfsio 36415 304204 0 0 3 0x14280 nfsidl nfsio 71359 510319 0 0 3 0x14280 nfsidl nfsio 51620 21542 0 0 3 0x14280 nfsidl nfsio 90639 272635 0 0 3 0x14280 nfsidl nfsio 55789 70789 0 0 3 0x14280 nfsidl nfsio 56062 252618 70213 0 3 0x8000082 nanoslp syz-executor.5 99841 388751 70213 0 3 0x8000082 nanoslp syz-executor.4 74644 487737 70213 0 3 0x8000082 nanoslp syz-executor.6 65841 496778 1 0 3 0x8000080 fsleep syz-executor.6 65841 480607 1 0 3 0xc000080 kqread syz-executor.6 72241 509145 0 0 3 0x14200 bored sosplice 13781 470217 93776 0 3 0x18100082 netio arp 93776 359027 1 0 3 0x810008a sigsusp sh 70213 476635 23212 0 3 0x1a000082 wait syz-fuzzer 70213 148790 23212 0 3 0x1e000082 thrsleep syz-fuzzer 70213 330548 23212 0 3 0x1e000082 thrsleep syz-fuzzer 70213 332206 23212 0 3 0x1e000082 thrsleep syz-fuzzer 70213 53240 23212 0 3 0x1e000082 thrsleep syz-fuzzer 70213 334598 23212 0 3 0x1e000082 thrsleep syz-fuzzer 70213 319844 23212 0 3 0x1e000082 wait syz-fuzzer 70213 395996 23212 0 3 0x1e000082 wait syz-fuzzer 70213 93722 23212 0 3 0x1e000082 thrsleep syz-fuzzer 70213 500623 23212 0 3 0x1e000082 thrsleep syz-fuzzer 70213 221237 23212 0 3 0x1e000082 thrsleep syz-fuzzer 70213 212502 23212 0 3 0x1e000082 kqread syz-fuzzer 70213 323750 23212 0 3 0x1e000082 wait syz-fuzzer 70213 500592 23212 0 3 0x1e000082 wait syz-fuzzer 70213 388644 23212 0 3 0x1e000082 wait syz-fuzzer 70213 155579 23212 0 3 0x1e000082 wait syz-fuzzer 23212 115900 64357 0 3 0x810008a sigsusp ksh 64357 325420 1063 0 3 0x1800009a kqread sshd 53968 24437 1 0 3 0x18100083 ttyin getty 1063 394219 1 0 3 0x18000088 kqread sshd 28244 106140 64334 73 3 0x19100090 kqread syslogd 64334 206 1 0 3 0x18100082 sbwait syslogd 40884 312047 1 0 3 0x18100080 kqread resolvd 55547 115233 0 0 3 0x14200 bored smr 21619 270591 0 0 2 0x14200 zerothread 94792 470182 0 0 3 0x14200 aiodoned aiodoned 44834 334233 0 0 3 0x14200 syncer update 65176 475391 0 0 3 0x14200 cleaner cleaner 22324 476489 0 0 3 0x14200 reaper reaper 62488 276583 0 0 3 0x14200 pgdaemon pagedaemon 36570 229487 0 0 3 0x14200 bored viomb 12571 189155 0 0 3 0x40014200 acpi0 acpi0 48963 57443 0 0 7 0x40014200 idle1 99568 153090 0 0 3 0x14200 bored softnet3 59779 42533 0 0 3 0x14200 bored softnet2 43583 111845 0 0 3 0x14200 bored softnet1 64307 394222 0 0 3 0x14200 bored softnet0 37744 178173 0 0 3 0x14200 bored systqmp 71503 489011 0 0 3 0x14200 bored systq 69085 283082 0 0 3 0x14200 tmoslp softclockmp 81230 523993 0 0 3 0x40014200 tmoslp softclock 58154 370962 0 0 3 0x40014200 idle0 1 486535 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex rwobjpl r = 0 (0xffffffff82e75da0) #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 pool_get+0xc4 sys/kern/subr_pool.c:579 #4 _rw_obj_alloc_flags+0x44 sys/kern/kern_rwlock.c:556 #5 amap_alloc+0xa7 amap_list_insert sys/uvm/uvm_amap.c:95 [inline] #5 amap_alloc+0xa7 sys/uvm/uvm_amap.c:431 #6 amap_copy+0x627 sys/uvm/uvm_amap.c:585 #7 uvm_fault_check+0x6b7 uvmfault_amapcopy sys/uvm/uvm_fault.c:250 [inline] #7 uvm_fault_check+0x6b7 sys/uvm/uvm_fault.c:710 #8 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #9 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 #10 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 #11 recall_trap+0x8 Process 50508 (syz-executor.6) thread 0xffff80002de93c70 (471391) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10198 6431K 6946K 166960K 12787 0 pcb 17 15K 16K 166960K 540 0 rtable 194 6K 7K 166960K 1399 0 pf 27 8K 10K 166960K 216 0 ifaddr 38 15K 17K 166960K 216 0 ifgroup 46 2K 2K 166960K 344 0 sysctl 3 0K 2K 166960K 8 0 counters 62 36K 36K 166960K 214 0 ioctlops 0 0K 4K 166960K 1721 0 iov 1 2K 36K 166960K 244 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1475 93K 93K 166960K 3172 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 78 0 VM map 2 1K 1K 166960K 2 0 sem 13 1K 1K 166960K 57 0 dirhash 12 2K 2K 166960K 60 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 20 73K 89K 166960K 3691 0 sigio 0 0K 0K 166960K 59 0 proc 54 55K 103K 166960K 1493 0 subproc 143 8K 9K 166960K 468 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 601 0 in_multi 85 6K 7K 166960K 478 0 ether_multi 1 0K 0K 166960K 24 0 mrt 2 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 1155 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 294 113K 129K 166960K 33779 0 UVM aobj 29 2K 2K 166960K 32 0 pinsyscall 35 70K 100K 166960K 5569 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 217 0 NDP 10 0K 1K 166960K 154 0 temp 82 6820K 6947K 166960K 145230 0 kqueue 8 14K 26K 166960K 410 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 120 402 0 399 3 2 1 3 0 8 0 rtentry 112 467 0 380 4 1 3 4 0 8 0 unpcb 144 3190 0 3116 18 15 3 6 0 8 0 syncache 336 13 0 13 7 6 1 1 0 8 1 tcpqe 32 32 0 32 3 3 0 1 0 8 0 tcpcb 808 1211 0 1206 26 25 1 8 0 8 0 arp 120 87 0 78 1 0 1 1 0 8 0 inpcb 384 4311 0 4304 55 52 3 11 0 8 1 nd6 136 117 0 93 1 0 1 1 0 8 0 pkpcb 40 29 0 29 15 14 1 1 0 8 1 kcovpl 48 36 0 25 1 0 1 1 0 8 0 ppxss 1168 18 0 18 8 7 1 1 0 8 1 pffrag 232 28 0 23 6 5 1 1 0 482 0 pffrnode 88 28 0 23 6 5 1 1 0 8 0 pffrent 40 263 0 258 6 5 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 24 231 0 207 1 0 1 1 0 8 0 pfstkey 128 231 0 207 2 0 2 2 0 8 0 pfstate 376 231 0 207 6 2 4 5 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 1712 0 1291 40 13 27 30 0 8 0 art_table 32 1713 0 1291 5 1 4 4 0 8 0 art_node 16 458 0 380 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 52 0 41 1 0 1 1 0 8 0 shmpl 112 29 0 3 1 0 1 1 0 8 0 dirhash 1024 49 0 32 3 0 3 3 0 8 0 dino2pl 256 7325 0 5790 97 0 97 97 0 8 0 ffsino 272 7325 0 5790 103 0 103 103 0 8 0 nchpl 144 12816 0 12221 66 40 26 66 0 8 0 uvmvnodes 80 7717 0 0 158 0 158 158 0 8 0 vnodes 216 7717 0 0 429 0 429 429 0 8 0 namei 1024 46819 0 46819 10 9 1 2 0 8 1 percpumem 16 121 0 76 1 0 1 1 0 8 0 vcpupl 3904 10 0 2 2 0 2 2 0 8 0 vmpool 696 40 0 32 1 0 1 1 0 8 0 kstatmem 264 172 0 152 2 0 2 2 0 8 0 scsiplug 72 3 0 3 3 2 1 1 0 8 1 scxspl 216 76289 0 76289 21 19 2 8 1 8 2 plimitpl 152 804 0 785 1 0 1 1 0 8 0 sigapl 424 3970 0 3902 11 2 9 9 0 8 1 futexpl 64 61968 0 61961 3 2 1 1 0 8 0 knotepl 120 877 0 0 18 0 18 18 0 8 0 kqueuepl 216 943 0 934 3 2 1 3 0 8 0 pipepl 320 591 0 558 3 0 3 3 0 8 0 fdescpl 496 3928 0 3900 5 0 5 5 0 8 0 filepl 152 27505 0 27159 55 41 14 19 0 8 0 lockfpl 104 1255 0 1252 3 2 1 2 0 8 0 lockfspl 48 422 0 419 1 0 1 1 0 8 0 sessionpl 144 50 0 32 1 0 1 1 0 8 0 pgrppl 48 135 0 117 1 0 1 1 0 8 0 ucredpl 104 5492 0 5484 1 0 1 1 0 8 0 zombiepl 144 3902 0 3902 2 1 1 1 0 8 1 processpl 1136 3970 0 3902 6 0 6 6 0 8 0 procpl 656 8089 0 7994 11 1 10 10 0 8 1 srpgc 96 21 0 21 7 7 0 1 0 8 0 sosppl 168 57 0 57 17 16 1 1 0 8 1 sockpl 664 7971 0 7887 80 72 8 14 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 527 0 0 41 4 37 41 0 8 0 mtagpl 96 14 0 0 1 0 1 1 0 8 0 mbufpl 256 1260 0 0 65 0 65 65 0 8 0 bufpl 280 14214 0 6497 552 0 552 552 0 8 0 anonpl 24 586485 0 580247 175 89 86 86 0 186 26 amapchunkpl 152 110537 0 109782 104 70 34 42 0 158 1 amappl16 200 13349 0 13206 109 89 20 32 0 8 8 amappl15 192 8 0 8 2 2 0 1 0 8 0 amappl14 184 280 0 271 2 1 1 2 0 8 0 amappl13 176 8 0 8 2 2 0 1 0 8 0 amappl12 168 5003 0 4972 3 1 2 2 0 8 0 amappl11 160 50 0 46 1 0 1 1 0 8 0 amappl10 152 96 0 85 1 0 1 1 0 8 0 amappl9 144 174 0 173 1 0 1 1 0 8 0 amappl8 136 185 0 148 2 0 2 2 0 8 0 amappl7 128 59 0 44 1 0 1 1 0 8 0 amappl6 120 670 0 657 2 1 1 2 0 8 0 amappl5 112 293 0 284 1 0 1 1 0 8 0 amappl4 104 741 0 707 2 0 2 2 0 8 0 amappl3 96 21097 0 21005 3 0 3 3 0 8 0 amappl2 88 4404 0 4348 3 1 2 3 0 8 0 amappl1 80 22154 0 21713 22 10 12 22 0 8 0 amappl 88 32815 0 32597 6 0 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 31 0 3 1 0 1 1 0 8 0 uaddrrnd 24 3968 0 3932 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3968 0 3932 1 0 1 1 0 8 0 vmmpekpl 168 30036 0 29975 5 1 4 4 0 8 0 vmmpepl 168 251950 0 250112 206 103 103 111 0 357 15 vmsppl 440 3967 0 3932 6 1 5 5 0 8 0 rwobjpl 56 70474 0 61668 136 6 130 130 0 8 5 rwobjpl: pool(0xffffffff82e75d90:rwobjpl): page inconsistency: page 0x0; at page head addr 0xfffffd8072e7cf90 (p 0xfffffd8072e7c000) pdppl 4096 7943 0 7872 329 255 74 82 0 8 3 pvpl 32 44940 0 0 364 1 363 363 0 265 0 pmappl 248 3967 0 3932 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 736 0 321 13 0 13 13 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(ffffffff82947fb1) at panic+0x17b sys/kern/subr_prf.c:198 pool_do_get(ffffffff82e75d90,1,ffff80002a2127c8) at pool_do_get+0x40f sys/kern/subr_pool.c:726 pool_get(ffffffff82e75d90,1) at pool_get+0xf0 sys/kern/subr_pool.c:582 _rw_obj_alloc_flags(fffffd80793c4c30,ffffffff82932532,0,ffffffff82cc4740) at _rw_obj_alloc_flags+0x44 sys/kern/kern_rwlock.c:556 amap_alloc(1000,2,0) at amap_alloc+0xa7 amap_list_insert sys/uvm/uvm_amap.c:95 [inline] amap_alloc(1000,2,0) at amap_alloc+0xa7 sys/uvm/uvm_amap.c:431 amap_copy(fffffd806b283a68,fffffd8069638b88,2,1,72f8923000,72f8923001) at amap_copy+0x627 sys/uvm/uvm_amap.c:585 uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 uvmfault_amapcopy sys/uvm/uvm_fault.c:250 [inline] uvm_fault_check(ffff80002a212b20,ffff80002a212b58,ffff80002a212b80) at uvm_fault_check+0x6b7 sys/uvm/uvm_fault.c:710 uvm_fault(fffffd806b283a68,72f8923000,0,1) at uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 upageflttrap(ffff80002a212ca0,72f8923008) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002a212ca0) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x722090b107f0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) 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+0x2f1 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800029cebff0) at sched_idle+0x41d sys/kern/kern_sched.c:183 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029cebff0) 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+0x2f1 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800029cebff0) at sched_idle+0x41d sys/kern/kern_sched.c:183 end trace frame: 0x0, count: -5