panic: pmap_enter: PG_PVLIST mapping with unmanaged page: va 0xb3922816000, opte 0xffffffffffffffff, pa 0x7c35c000 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *497395 8517 0 0 0 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82480dde) at panic+0x161 sys/kern/subr_prf.c:202 pmap_enter(fffffd806664e6c8,b3922816000,7c35c000,5,24) at pmap_enter+0xbf7 sys/arch/amd64/amd64/pmap.c:2771 uvm_fault_lower(ffff80002310f300,ffff80002310f338,ffff80002310f280,0) at uvm_fault_lower+0x5b1 sys/uvm/uvm_fault.c:1482 uvm_fault(fffffd806aebd340,b3922816000,0,4) at uvm_fault+0x21d upageflttrap(ffff80002310f470,b3922816950) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002310f470) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff69c0, count: 7 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: pmap_enter: PG_PVLIST mapping with unmanaged page: va 0xb3922816000, opte 0xffffffffffffffff, pa 0x7c35c000 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82480dde) at panic+0x161 sys/kern/subr_prf.c:202 pmap_enter(fffffd806664e6c8,b3922816000,7c35c000,5,24) at pmap_enter+0xbf7 sys/arch/amd64/amd64/pmap.c:2771 uvm_fault_lower(ffff80002310f300,ffff80002310f338,ffff80002310f280,0) at uvm_fault_lower+0x5b1 sys/uvm/uvm_fault.c:1482 uvm_fault(fffffd806aebd340,b3922816000,0,4) at uvm_fault+0x21d upageflttrap(ffff80002310f470,b3922816950) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002310f470) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff69c0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002310efb0 rbx 0x400 rdx 0 rcx 0 rax 0xffff800024b26548 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6018847a371422c5 r11 0x901cc43e7f0c31d3 r12 0 r13 0xffffffffffffffff r14 0 r15 0x1 rip 0xffffffff8143fc28 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002310efa0 ss 0 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.0) pid=497395 stat=onproc flags process=0 proc=0 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002165d500,0xffffffff828e7268 process=0xffff80002166e408 user=0xffff80002310a000, vmspace=0xfffffd806aebd340 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND * 8517 497395 72368 0 7 0 syz-executor.0 27693 172790 0 0 3 0x14200 bored sosplice 63159 438789 1 0 3 0x100083 ttyin getty 94661 418580 42428 0 3 0x82 nanoslp syz-executor.2 80453 133084 42428 0 3 0x2 biowait syz-executor.1 82119 74220 42428 0 3 0x82 nanoslp syz-executor.3 72368 37625 42428 0 3 0x82 nanoslp syz-executor.0 42428 377673 35278 0 3 0x82 thrsleep syz-fuzzer 42428 266924 35278 0 3 0x4000082 nanoslp syz-fuzzer 42428 89937 35278 0 3 0x4000082 thrsleep syz-fuzzer 42428 414278 35278 0 3 0x4000082 thrsleep syz-fuzzer 42428 9308 35278 0 3 0x4000082 thrsleep syz-fuzzer 42428 21397 35278 0 3 0x4000082 kqread syz-fuzzer 35278 234740 32278 0 3 0x10008a sigsusp ksh 32278 198607 89280 0 3 0x9a poll sshd 89280 333871 1 0 3 0x88 poll sshd 69876 265799 17432 73 3 0x100090 kqread syslogd 17432 139994 1 0 3 0x100082 netio syslogd 64872 496373 1 0 3 0x100080 kqread resolvd 89137 157853 51735 77 3 0x100092 kqread dhcpleased 71093 302743 51735 77 3 0x100092 kqread dhcpleased 51735 230963 1 0 3 0x80 kqread dhcpleased 71050 237613 0 0 3 0x14200 bored smr 89166 349202 0 0 2 0x14200 zerothread 14204 187391 0 0 3 0x14200 aiodoned aiodoned 49044 420823 0 0 3 0x14200 syncer update 23770 136725 0 0 3 0x14200 cleaner cleaner 73302 40255 0 0 3 0x14200 reaper reaper 90867 464610 0 0 3 0x14200 pgdaemon pagedaemon 37083 338823 0 0 3 0x14200 bored viomb 6123 222353 0 0 3 0x40014200 acpi0 acpi0 92805 42020 0 0 3 0x14200 bored softnet 27650 153067 0 0 3 0x14200 bored systqmp 86616 227921 0 0 3 0x14200 bored systq 4899 519686 0 0 3 0x40014200 bored softclock 17667 361909 0 0 3 0x40014200 idle0 1 512293 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10151 6396K 6721K 78643K 13045 0 pcb 13 13K 14K 78643K 178 0 rtable 162 7K 9K 78643K 334 0 ifaddr 61 14K 14K 78643K 188 0 sysctl 2 0K 0K 78643K 2 0 counters 23 16K 17K 78643K 30 0 ioctlops 0 0K 4K 78643K 10517 0 iov 0 0K 12K 78643K 210 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1290 81K 81K 78643K 2096 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 166 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 37K 78643K 6755 0 sigio 0 0K 0K 78643K 8 0 proc 58 55K 71K 78643K 393 0 subproc 52 3K 3K 78643K 52 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 23 0 in_multi 55 3K 3K 78643K 77 0 ether_multi 1 0K 0K 78643K 12 0 mrt 0 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 2K 78643K 697 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 7 26K 26K 78643K 7 0 UVM amap 235 50K 51K 78643K 81731 0 UVM aobj 23 4K 4K 78643K 23 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 38 0 NDP 7 0K 1K 78643K 22 0 temp 95 4197K 4261K 78643K 23791 0 kqueue 10 14K 18K 78643K 41 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 84 0 81 2 1 1 2 0 8 0 rtentry 112 72 0 6 2 0 2 2 0 8 0 unpcb 136 1022 0 1009 13 12 1 6 0 8 0 syncache 296 11 0 11 2 2 0 1 0 8 0 tcpqe 32 102 0 102 1 1 0 1 0 8 0 tcpcb 736 474 0 470 27 26 1 8 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 304 3027 0 3020 30 29 1 11 0 8 0 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 13 0 1 1 0 1 1 0 8 0 kcovpl 48 4 0 0 1 0 1 1 0 8 0 pfstscr 40 5462 0 5462 3 3 0 1 0 8 0 pfosfp 40 6 0 5 2 1 1 1 0 8 0 pfosfpen 112 6 0 5 2 1 1 1 0 8 0 pfrktable 1344 28 0 24 1 0 1 1 0 8 0 pftag 88 9 0 8 2 1 1 1 0 8 0 pfqueue 264 6 0 3 1 0 1 1 0 8 0 pfstitem 24 3817 0 3817 3 3 0 1 0 8 0 pfstkey 112 10126 0 10126 3 3 0 1 0 8 0 pfstate 320 5063 0 5063 3 3 0 1 0 8 0 pfrule 1360 86 0 72 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 278 0 2 18 0 18 18 0 8 0 art_table 32 279 0 2 3 0 3 3 0 8 0 art_node 16 70 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 7 0 7 1 1 0 1 0 8 0 semapl 112 154 0 144 1 0 1 1 0 8 0 shmpl 112 20 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8634 0 7233 89 0 89 89 0 8 0 ffsino 240 8634 0 7233 84 0 84 84 0 8 0 nchpl 144 16761 0 15146 61 0 61 61 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 63702 0 63701 1 0 1 1 0 8 0 vcpupl 1984 5 0 2 1 0 1 1 0 8 0 vmpool 528 12 0 9 1 0 1 1 0 8 0 pfiaddrpl 120 10 0 6 1 0 1 1 0 8 0 scxspl 216 46467 0 46466 9 8 1 8 0 8 0 plimitpl 152 317 0 307 1 0 1 1 0 8 0 sigapl 424 6966 0 6934 5 1 4 5 0 8 0 futexpl 64 54532 0 54532 2 1 1 1 0 8 1 knotepl 112 672 0 621 2 0 2 2 0 8 0 kqueuepl 184 443 0 437 8 7 1 4 0 8 0 pipepl 304 500 0 484 13 11 2 7 0 8 0 fdescpl 432 6952 0 6934 3 0 3 3 0 8 0 filepl 120 42153 0 42007 48 41 7 12 0 8 2 lockfpl 104 474 0 472 1 0 1 1 0 8 0 lockfspl 48 202 0 200 1 0 1 1 0 8 0 sessionpl 144 20 0 8 1 0 1 1 0 8 0 pgrppl 48 26 0 14 1 0 1 1 0 8 0 ucredpl 96 2662 0 2652 1 0 1 1 0 8 0 zombiepl 144 6934 0 6932 1 0 1 1 0 8 0 processpl 1000 6966 0 6932 5 0 5 5 0 8 0 procpl 672 15400 0 15361 5 0 5 5 0 8 0 sosppl 168 9 0 9 2 2 0 1 0 8 0 sockpl 448 4134 0 4111 70 67 3 22 0 8 0 mcl64k 65536 123 0 123 7 7 0 1 0 8 0 mcl16k 16384 32 0 32 8 8 0 1 0 8 0 mcl12k 12288 143 0 143 8 8 0 1 0 8 0 mcl9k 9216 37 0 37 6 6 0 1 0 8 0 mcl8k 8192 202 0 202 11 11 0 1 0 8 0 mcl4k 4096 595 0 595 7 6 1 1 0 8 1 mcl2k2 2112 32 0 32 11 11 0 1 0 8 0 mcl2k 2048 80738 0 80696 23 17 6 12 0 8 0 mtagpl 96 171 0 138 5 2 3 4 0 8 0 mbufpl 256 159437 0 159188 284 260 24 271 0 8 0 bufpl 288 10669 0 4253 459 0 459 459 0 8 0 anonpl 24 1772818 0 1754642 184 68 116 141 0 188 0 amapchunkpl 152 193871 0 193303 34 8 26 31 0 158 0 amappl16 200 16511 0 15811 70 32 38 52 0 8 0 amappl15 192 3357 0 3357 1 0 1 1 0 8 1 amappl14 184 1727 0 1724 1 0 1 1 0 8 0 amappl13 176 39 0 38 1 0 1 1 0 8 0 amappl12 168 1663 0 1660 2 1 1 1 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 44 0 37 1 0 1 1 0 8 0 amappl9 144 467 0 465 1 0 1 1 0 8 0 amappl8 136 2105 0 2038 3 0 3 3 0 8 0 amappl7 128 1749 0 1739 1 0 1 1 0 8 0 amappl6 120 137 0 122 1 0 1 1 0 8 0 amappl5 112 3614 0 3600 1 0 1 1 0 8 0 amappl4 104 2285 0 2262 1 0 1 1 0 8 0 amappl3 96 1998 0 1979 1 0 1 1 0 8 0 amappl2 88 2175 0 2133 2 0 2 2 0 8 0 amappl1 80 119728 0 119293 12 1 11 12 0 8 0 amappl 88 81367 0 81221 5 0 5 5 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 22 0 0 1 0 1 1 0 8 0 uaddrrnd 24 6964 0 6943 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6964 0 6943 1 0 1 1 0 8 0 vmmpekpl 168 36062 0 36035 2 0 2 2 0 8 0 vmmpepl 168 605891 0 603911 159 61 98 132 0 357 3 vmsppl 272 6963 0 6943 3 1 2 2 0 8 0 rwobjpl 24 141741 0 134324 46 0 46 46 0 8 0 pdppl 4096 13934 0 13889 75 24 51 53 0 8 6 pvpl 32 2910988 0 2890959 265 95 170 201 0 265 0 pmappl 216 6963 0 6943 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1176 0 430 28 5 23 24 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82480dde) at panic+0x161 sys/kern/subr_prf.c:202 pmap_enter(fffffd806664e6c8,b3922816000,7c35c000,5,24) at pmap_enter+0xbf7 sys/arch/amd64/amd64/pmap.c:2771 uvm_fault_lower(ffff80002310f300,ffff80002310f338,ffff80002310f280,0) at uvm_fault_lower+0x5b1 sys/uvm/uvm_fault.c:1482 uvm_fault(fffffd806aebd340,b3922816000,0,4) at uvm_fault+0x21d upageflttrap(ffff80002310f470,b3922816950) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002310f470) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff69c0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82480dde) at panic+0x161 sys/kern/subr_prf.c:202 pmap_enter(fffffd806664e6c8,b3922816000,7c35c000,5,24) at pmap_enter+0xbf7 sys/arch/amd64/amd64/pmap.c:2771 uvm_fault_lower(ffff80002310f300,ffff80002310f338,ffff80002310f280,0) at uvm_fault_lower+0x5b1 sys/uvm/uvm_fault.c:1482 uvm_fault(fffffd806aebd340,b3922816000,0,4) at uvm_fault+0x21d upageflttrap(ffff80002310f470,b3922816950) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002310f470) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff69c0, count: -8