panic: pmap_enter: PG_PVLIST mapping with unmanaged page: va 0x6707f639000, opte 0xfffffffffffffffd, pa 0x6cdc6000 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *419586 17708 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83348d8a) at panic+0x1cf sys/kern/subr_prf.c:198 pmap_enter(fffffd806cdbf5f0,6707f639000,6cdc6000,1,21) at pmap_enter+0x11bd uvm_fault_upper(ffff80002cced790,ffff80002cced7c8,ffff80002cced690) at uvm_fault_upper+0x474 sys/uvm/uvm_fault.c:1139 uvm_fault(fffffd806ccdbd08,6707f639000,0,1) at uvm_fault+0x178 sys/uvm/uvm_fault.c:641 upageflttrap(ffff80002cced930,6707f639670) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002cced930) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:622 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7ccb4f6e1210, 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 0x6707f639000, opte 0xfffffffffffffffd, pa 0x6cdc6000 ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83348d8a) at panic+0x1cf sys/kern/subr_prf.c:198 pmap_enter(fffffd806cdbf5f0,6707f639000,6cdc6000,1,21) at pmap_enter+0x11bd uvm_fault_upper(ffff80002cced790,ffff80002cced7c8,ffff80002cced690) at uvm_fault_upper+0x474 sys/uvm/uvm_fault.c:1139 uvm_fault(fffffd806ccdbd08,6707f639000,0,1) at uvm_fault+0x178 sys/uvm/uvm_fault.c:641 upageflttrap(ffff80002cced930,6707f639670) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002cced930) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:622 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7ccb4f6e1210, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002cced440 rbx 0x1 rdx 0 rcx 0 rax 0xffff80002a7bd4e0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd2d14baf488eb5da r11 0xc19d21856c6232ae r12 0 r13 0x400 r14 0 r15 0x1 rip 0xffffffff8114eff5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002cced430 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=419586 pid=17708 tcnt=2 stat=onproc flags process=0 proc=0 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c939cb0,0xffff80002a7bc560 process=0xffff800038119218 user=0xffff80002cce8000, vmspace=0xfffffd806ccdbd08 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 52678 190054 82679 0 3 0x80 fsleep syz-executor 52678 174707 82679 0 3 0x4000000 biowait syz-executor 72184 373352 44740 0 3 0x90 fsleep syz-executor 72184 175549 44740 0 2 0x4000010 syz-executor 25794 295113 78405 0 2 0 syz-executor 25794 498636 78405 0 2 0x4000000 syz-executor 25794 171435 78405 0 3 0x4000080 fsleep syz-executor *17708 419586 79977 0 7 0 syz-executor 17708 206635 79977 0 2 0x4000000 syz-executor 71596 314870 26742 0 3 0x80 fsleep syz-executor 71596 136708 26742 0 3 0x4000080 ttyin syz-executor 62259 508131 74004 0 3 0x80 fsleep syz-executor 62259 300885 74004 0 3 0x4000080 netacc syz-executor 44740 101783 85967 0 3 0x82 nanoslp syz-executor 78405 395872 85967 0 3 0x82 nanoslp syz-executor 79977 171252 85967 0 3 0x82 nanoslp syz-executor 50749 145272 85967 0 3 0x82 wait syz-executor 74004 311911 85967 0 3 0x82 nanoslp syz-executor 82679 294705 85967 0 3 0x82 nanoslp syz-executor 32483 324246 85967 0 3 0x82 wait syz-executor 26742 364426 85967 0 3 0x82 nanoslp syz-executor 85967 383657 2888 0 3 0x82 kqread syz-executor 2888 263303 19083 0 3 0x10008a sigsusp ksh 19083 131244 43173 0 3 0x98 kqread sshd-session 43173 5659 64388 0 3 0x92 kqread sshd-session 35015 158872 1 0 3 0x100083 ttyopn getty 64388 478740 1 0 3 0x88 kqread sshd 32589 22267 93538 73 3 0x1100090 kqread syslogd 93538 431894 1 0 3 0x100082 sbwait syslogd 28738 445193 1 0 3 0x100080 kqread resolvd 16884 487917 13963 77 3 0x100092 kqread dhcpleased 35483 424755 13963 77 3 0x100092 kqread dhcpleased 13963 17621 1 0 3 0x80 kqread dhcpleased 4772 132594 0 0 3 0x14200 bored smr 22401 338241 0 0 2 0x14200 zerothread 72686 459168 0 0 3 0x14200 aiodoned aiodoned 81406 505828 0 0 3 0x14200 syncer update 39279 236774 0 0 3 0x14200 cleaner cleaner 53516 444656 0 0 3 0x14200 reaper reaper 77992 180811 0 0 3 0x14200 pgdaemon pagedaemon 8713 31603 0 0 3 0x14200 bored viomb 46464 148820 0 0 3 0x40014200 acpi0 acpi0 81169 267768 0 0 3 0x14200 bored softnet0 28291 315502 0 0 3 0x14200 bored systqmp 35764 142461 0 0 3 0x14200 bored systq 83442 351265 0 0 3 0x40014200 tmoslp softclock 22765 378375 0 0 3 0x40014200 idle0 1 466553 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10199 11247K 11700K 166960K 13715 0 pcb 19 16K 17K 166960K 331 0 rtable 209 8K 8K 166960K 461 0 pf 34 13K 20K 166960K 100 0 ifaddr 37 6K 7K 166960K 73 0 ifgroup 54 2K 2K 166960K 113 0 sysctl 3 1K 9K 166960K 13 0 counters 33 17K 18K 166960K 62 0 ioctlops 0 0K 4K 166960K 446 0 iov 0 0K 24K 166960K 122 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1492 94K 94K 166960K 2318 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 10K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 25 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 950 0 sigio 0 0K 0K 166960K 23 0 proc 60 59K 91K 166960K 549 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 85 0 in_multi 74 5K 7K 166960K 149 0 ether_multi 1 0K 0K 166960K 19 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 465 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 240 143K 164K 166960K 10030 0 UVM aobj 97 5K 9K 166960K 102 0 pinsyscall 39 78K 92K 166960K 2013 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 38 0 NDP 12 0K 2K 166960K 49 0 temp 64 8669K 8733K 166960K 33180 0 kqueue 13 20K 32K 166960K 206 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 156 0 152 3 0 3 3 0 8 2 rtentry 136 125 0 42 4 0 4 4 0 8 0 unpcb 144 732 0 715 4 0 4 4 0 8 3 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 271 0 263 4 0 4 4 0 8 3 arp 96 21 0 4 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 67 0 64 1 0 1 1 0 8 0 inpcb 328 904 0 890 7 0 7 7 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 27 0 6 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 23 0 23 1 0 1 1 0 8 1 pppxif 1384 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 384 2 0 1 1 0 1 1 0 8 0 pfrule 1344 2 0 2 1 0 1 1 0 8 1 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 565 0 222 31 0 31 31 0 8 4 art_table 40 568 0 222 5 0 5 5 0 8 0 art_node 32 124 0 50 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 7 1 0 1 1 0 8 0 semapl 112 21 0 11 1 0 1 1 0 8 0 shmpl 112 96 0 3 3 0 3 3 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 3050 0 1555 95 0 95 95 0 8 0 ffsino 256 3050 0 1555 95 0 95 95 0 8 0 nchpl 144 4403 0 2712 64 0 64 64 0 8 0 rtmask 32 6 0 6 1 0 1 1 0 8 1 vnodes 216 3769 0 0 210 0 210 210 0 8 0 namei 1024 14316 0 14314 1 0 1 1 0 8 0 vcpupl 3904 3 0 2 1 0 1 1 0 8 0 vmpool 800 3 0 2 1 0 1 1 0 8 0 kstatmem 264 66 0 42 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 13186 0 13185 8 0 8 8 1 8 7 plimitpl 152 244 0 226 1 0 1 1 0 8 0 sigapl 424 1221 0 1178 6 0 6 6 0 8 1 knotepl 120 51162 0 51115 17 7 10 17 0 8 8 kqueuepl 184 360 0 351 4 0 4 4 0 8 3 pipepl 304 318 0 291 8 0 8 8 0 8 5 fdescpl 448 1207 0 1177 5 0 5 5 0 8 1 filepl 120 7789 0 7553 12 0 12 12 0 8 3 lockfpl 104 346 0 341 1 0 1 1 0 8 0 lockfspl 48 160 0 155 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 44 0 28 1 0 1 1 0 8 0 ucredpl 104 1060 0 1046 1 0 1 1 0 8 0 zombiepl 144 1180 0 1178 1 0 1 1 0 8 0 processpl 1152 1221 0 1178 4 0 4 4 0 8 0 procpl 664 2404 0 2354 6 0 6 6 0 8 1 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 552 1823 0 1788 12 1 11 12 0 8 8 mcl64k 65536 107 0 107 2 0 2 2 0 8 2 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 11 0 11 1 0 1 1 0 8 1 mcl4k 4096 3535 0 3483 14 0 14 14 0 8 6 mcl2k 2048 1249 0 1241 2 0 2 2 0 8 0 mtagpl 96 71 0 6 2 0 2 2 0 8 0 mbufpl 256 18023 0 17768 26 2 24 24 0 8 7 bufpl 280 3860 0 122 267 0 267 267 0 8 0 anonpl 24 191139 0 187881 46 0 46 46 0 187 19 amapchunkpl 152 33855 0 33346 37 0 37 37 0 158 15 amappl16 200 3367 0 3334 20 10 10 15 0 8 8 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 3 0 3 1 0 1 1 0 8 1 amappl13 176 405 0 404 1 0 1 1 0 8 0 amappl12 168 1553 0 1514 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 47 0 37 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 0 1 1 0 8 1 amappl8 136 34 0 32 1 0 1 1 0 8 0 amappl7 128 83 0 81 1 0 1 1 0 8 0 amappl6 120 263 0 252 1 0 1 1 0 8 0 amappl5 112 77 0 69 1 0 1 1 0 8 0 amappl4 104 389 0 363 1 0 1 1 0 8 0 amappl3 96 5704 0 5607 3 0 3 3 0 8 0 amappl2 88 1328 0 1255 2 0 2 2 0 8 0 amappl1 80 12239 0 11700 13 0 13 13 0 8 1 amappl 88 9202 0 9030 5 0 5 5 0 92 0 uvmvnodes 80 116 0 0 3 0 3 3 0 8 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma2048 2048 4 0 4 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 254 0 254 1 0 1 1 0 8 1 dma64 64 7 0 7 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 101 0 5 2 0 2 2 0 8 0 uaddrrnd 24 1207 0 1177 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1207 0 1177 1 0 1 1 0 8 0 vmmpekpl 168 11004 0 10976 2 0 2 2 0 8 0 vmmpepl 168 80635 0 78784 91 0 91 91 0 357 9 vmsppl 368 1206 0 1177 4 0 4 4 0 8 1 rwobjpl 40 22673 0 21602 13 0 13 13 0 8 2 pdppl 4096 2427 0 2359 101 32 69 79 0 8 1 pvpl 32 527260 0 518148 123 0 123 123 0 265 41 pmappl 216 1209 0 1179 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 395 0 34 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83348d8a) at panic+0x1cf sys/kern/subr_prf.c:198 pmap_enter(fffffd806cdbf5f0,6707f639000,6cdc6000,1,21) at pmap_enter+0x11bd uvm_fault_upper(ffff80002cced790,ffff80002cced7c8,ffff80002cced690) at uvm_fault_upper+0x474 sys/uvm/uvm_fault.c:1139 uvm_fault(fffffd806ccdbd08,6707f639000,0,1) at uvm_fault+0x178 sys/uvm/uvm_fault.c:641 upageflttrap(ffff80002cced930,6707f639670) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002cced930) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:622 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7ccb4f6e1210, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83348d8a) at panic+0x1cf sys/kern/subr_prf.c:198 pmap_enter(fffffd806cdbf5f0,6707f639000,6cdc6000,1,21) at pmap_enter+0x11bd uvm_fault_upper(ffff80002cced790,ffff80002cced7c8,ffff80002cced690) at uvm_fault_upper+0x474 sys/uvm/uvm_fault.c:1139 uvm_fault(fffffd806ccdbd08,6707f639000,0,1) at uvm_fault+0x178 sys/uvm/uvm_fault.c:641 upageflttrap(ffff80002cced930,6707f639670) at upageflttrap+0xa0 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002cced930) at usertrap+0x413 sys/arch/amd64/amd64/trap.c:622 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7ccb4f6e1210, count: -8