panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0x56049216000, opte 0xffffffffffffffff Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 52845 82294 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82588abf) at panic+0x161 sys/kern/subr_prf.c:202 pmap_remove_ptes(fffffd806ab0a440,fffffd8005ac6680,7f82b0249098,56049213000,56049225000,0,62e5e1d0d86b9e1c) at pmap_remove_ptes+0x32e pmap_do_remove(fffffd806ab0a440,56049213000,56049225000,0) at pmap_do_remove+0x438 sys/arch/amd64/amd64/pmap.c:1865 uvm_unmap_kill_entry_withlock(fffffd8079091110,fffffd806bfbe168,0) at uvm_unmap_kill_entry_withlock+0x1a2 sys/uvm/uvm_map.c:2139 uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd8079091110) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3684 reaper(ffff8000ffff8fc8) at reaper+0x15d sys/kern/kern_exit.c:454 end trace frame: 0x0, 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_remove_ptes: unmanaged page marked PG_PVLIST: va 0x56049216000, opte 0xffffffffffffffff ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82588abf) at panic+0x161 sys/kern/subr_prf.c:202 pmap_remove_ptes(fffffd806ab0a440,fffffd8005ac6680,7f82b0249098,56049213000,56049225000,0,62e5e1d0d86b9e1c) at pmap_remove_ptes+0x32e pmap_do_remove(fffffd806ab0a440,56049213000,56049225000,0) at pmap_do_remove+0x438 sys/arch/amd64/amd64/pmap.c:1865 uvm_unmap_kill_entry_withlock(fffffd8079091110,fffffd806bfbe168,0) at uvm_unmap_kill_entry_withlock+0x1a2 sys/uvm/uvm_map.c:2139 uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd8079091110) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3684 reaper(ffff8000ffff8fc8) at reaper+0x15d sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000215c0420 rbx 0xfffffd8005ac6680 rdx 0 rcx 0 rax 0xffff8000ffff8fc8 r8 0x101010101010101 r9 0x8080808080808080 r10 0xeaeb7e00c024c853 r11 0x7b4e926156389d7e r12 0 r13 0 r14 0 r15 0x1 rip 0xffffffff81c36e88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000215c0410 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (reaper) pid=52845 stat=onproc flags process=14000 proc=200 pri=4, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000fffffce0,0xffff8000ffff8d38 process=0xffff8000ffffa7d8 user=0xffff8000215bb000, vmspace=0xffffffff829c3978 estcpu=0, cpticks=1, pctcpu=0.2 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 52920 55572 61533 0 2 0 syz-executor.4 52920 158094 61533 0 3 0x4000080 fsleep syz-executor.4 26744 43707 74341 0 2 0 syz-executor.3 26744 76178 74341 0 3 0x4000080 fsleep syz-executor.3 78396 261236 60487 0 2 0 syz-executor.2 78396 332921 60487 0 3 0x4000080 fsleep syz-executor.2 83176 329581 35073 0 2 0 syz-executor.1 83176 149997 35073 0 3 0x4000080 fsleep syz-executor.1 83176 73007 35073 0 3 0x4000080 fsleep syz-executor.1 83176 113589 35073 0 3 0x4000080 fsleep syz-executor.1 22425 358404 42989 0 3 0x82 nanoslp syz-executor.0 26292 148560 0 0 3 0x14200 acct acct 61533 211168 42989 0 3 0x82 nanoslp syz-executor.4 71220 177276 0 0 3 0x14280 nfsidl nfsio 9722 53265 0 0 3 0x14280 nfsidl nfsio 11059 289079 0 0 3 0x14280 nfsidl nfsio 15791 410184 0 0 3 0x14280 nfsidl nfsio 11345 501080 0 0 3 0x14280 nfsidl nfsio 82330 421600 0 0 3 0x14280 nfsidl nfsio 55173 112281 0 0 3 0x14280 nfsidl nfsio 10706 336109 0 0 3 0x14280 nfsidl nfsio 51099 305981 0 0 3 0x14280 nfsidl nfsio 39044 275941 0 0 3 0x14280 nfsidl nfsio 96487 257552 0 0 3 0x14280 nfsidl nfsio 37502 230413 0 0 3 0x14280 nfsidl nfsio 81378 489757 0 0 3 0x14280 nfsidl nfsio 14724 250344 0 0 3 0x14280 nfsidl nfsio 13537 243289 0 0 3 0x14280 nfsidl nfsio 8421 130102 0 0 3 0x14280 nfsidl nfsio 75638 479325 0 0 3 0x14280 nfsidl nfsio 98048 225174 0 0 3 0x14280 nfsidl nfsio 40118 182233 0 0 3 0x14280 nfsidl nfsio 91899 81315 0 0 3 0x14280 nfsidl nfsio 8592 457835 42989 0 3 0x82 nanoslp syz-executor.7 52124 403407 42989 0 3 0x82 nanoslp syz-executor.6 74341 206269 42989 0 3 0x82 nanoslp syz-executor.3 60487 211699 42989 0 3 0x82 nanoslp syz-executor.2 94795 288676 0 0 3 0x14200 bored sosplice 35073 261902 42989 0 3 0x82 nanoslp syz-executor.1 52691 502515 42989 0 3 0x82 nanoslp syz-executor.5 42989 145543 89788 0 3 0x82 thrsleep syz-fuzzer 42989 111796 89788 0 3 0x4000082 thrsleep syz-fuzzer 42989 132789 89788 0 3 0x4000082 thrsleep syz-fuzzer 42989 86969 89788 0 3 0x4000082 kqread syz-fuzzer 42989 38105 89788 0 3 0x4000082 thrsleep syz-fuzzer 42989 232285 89788 0 3 0x4000082 thrsleep syz-fuzzer 42989 314342 89788 0 3 0x4000082 thrsleep syz-fuzzer 42989 512120 89788 0 3 0x4000082 thrsleep syz-fuzzer 42989 294021 89788 0 3 0x4000082 thrsleep syz-fuzzer 89788 198143 67094 0 3 0x10008a sigsusp ksh 67094 227472 72736 0 3 0x9a kqread sshd 76411 508851 1 0 3 0x100083 ttyin getty 72736 312737 1 0 3 0x88 kqread sshd 78628 394060 52769 73 3 0x1100090 kqread syslogd 52769 497827 1 0 3 0x100082 netio syslogd 42177 337332 1 0 3 0x100080 kqread resolvd 40168 48993 26614 77 3 0x100092 kqread dhcpleased 9260 291636 26614 77 3 0x100092 kqread dhcpleased 26614 78656 1 0 3 0x80 kqread dhcpleased 84126 344345 0 0 3 0x14200 bored smr 68988 242613 0 0 2 0x14200 zerothread 76099 198366 0 0 3 0x14200 aiodoned aiodoned 80601 124943 0 0 3 0x14200 syncer update 81823 237527 0 0 3 0x14200 cleaner cleaner *82294 52845 0 0 7 0x14200 reaper 52099 79134 0 0 3 0x14200 pgdaemon pagedaemon 13825 99046 0 0 3 0x14200 bored viomb 2685 386846 0 0 3 0x40014200 acpi0 acpi0 81802 452922 0 0 3 0x14200 bored softnet 96054 329965 0 0 3 0x14200 bored softnet 11878 154617 0 0 3 0x14200 bored softnet 69224 407686 0 0 3 0x14200 bored softnet 94129 479012 0 0 3 0x14200 bored systqmp 37592 368566 0 0 3 0x14200 bored systq 62455 521503 0 0 3 0x40014200 bored softclock 47975 261863 0 0 3 0x40014200 idle0 1 5681 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 10343 6498K 9503K 78643K 29283 0 pcb 13 16K 18K 78643K 1729 0 rtable 175 12K 13K 78643K 1013 0 ifaddr 80 16K 18K 78643K 348 0 sysctl 2 0K 0K 78643K 2 0 counters 26 17K 17K 78643K 59 0 ioctlops 0 0K 4K 78643K 12171 0 iov 0 0K 16K 78643K 722 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1405 88K 88K 78643K 14941 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 63 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 196 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 81K 78643K 17938 0 sigio 0 0K 0K 78643K 668 0 proc 59 59K 83K 78643K 1229 0 subproc 104 6K 6K 78643K 299 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 289 0 in_multi 63 4K 7K 78643K 415 0 ether_multi 1 0K 0K 78643K 53 0 mrt 1 0K 0K 78643K 26 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 1596 0 pfkey data 0 0K 1K 78643K 4 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 349 121K 150K 78643K 92972 0 UVM aobj 131 5K 5K 78643K 145 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 135 0 NDP 12 0K 2K 78643K 91 0 temp 134 4738K 21122K 78643K 55115 0 kqueue 13 20K 28K 78643K 1381 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 120 147 0 144 1 0 1 1 0 8 0 rtentry 112 299 0 230 4 1 3 4 0 8 0 unpcb 136 2433 0 2420 24 23 1 5 0 8 0 syncache 296 73 0 73 7 7 0 1 0 8 0 tcpqe 32 50 0 50 4 4 0 1 0 8 0 tcpcb 736 5700 0 5696 107 106 1 20 0 8 0 arp 88 50 0 37 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 36 0 36 1 1 0 1 0 8 0 inpcb 312 11664 0 11654 142 141 1 16 0 8 0 nd6 48 71 0 55 1 0 1 1 0 8 0 pkpcb 40 25 0 25 4 4 0 1 0 8 0 kcovpl 48 23 0 15 1 0 1 1 0 8 0 ppxss 1152 8 0 8 3 3 0 1 0 8 0 pfosfp 40 4 0 3 1 0 1 1 0 8 0 pfosfpen 112 4 0 0 1 0 1 1 0 8 0 pfrktable 1344 24 0 18 1 0 1 1 0 8 0 pftag 88 5 0 3 2 1 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 16 0 14 2 1 1 1 0 8 0 pfstate 336 8 0 7 2 1 1 1 0 8 0 pfrule 1360 100 0 62 5 1 4 4 0 8 0 rttmr 64 6 0 6 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1292 0 999 42 23 19 29 0 8 0 art_table 32 1293 0 999 4 0 4 4 0 8 0 art_node 16 298 0 239 1 0 1 1 0 8 0 sysvmsgpl 40 47 0 38 2 1 1 1 0 8 0 semapl 112 194 0 184 1 0 1 1 0 8 0 shmpl 112 142 0 14 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 22832 0 21393 92 1 91 91 0 8 0 ffsino 240 22832 0 21393 86 1 85 86 0 8 0 nchpl 144 47113 0 45480 63 1 62 63 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 172181 0 172181 9 8 1 2 0 8 1 vcpupl 1984 3 0 1 1 0 1 1 0 8 0 vmpool 528 3 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 22 0 4 1 0 1 1 0 8 0 kstatmem 264 90 0 66 2 0 2 2 0 8 0 scxspl 216 119898 0 119898 24 23 1 8 0 8 1 plimitpl 152 469 0 455 1 0 1 1 0 8 0 sigapl 424 18235 0 18168 8 0 8 8 0 8 0 futexpl 64 144897 0 144891 6 5 1 1 0 8 0 knotepl 120 289518 0 289436 21 17 4 11 0 8 0 kqueuepl 184 5461 0 5451 20 19 1 4 0 8 0 pipepl 304 2792 0 2764 71 68 3 8 0 8 0 fdescpl 432 18183 0 18158 4 0 4 4 0 8 0 filepl 120 117081 0 116841 153 142 11 18 0 8 3 lockfpl 104 4362 0 4357 7 6 1 2 0 8 0 lockfspl 48 1096 0 1091 1 0 1 1 0 8 0 sessionpl 144 38 0 22 1 0 1 1 0 8 0 pgrppl 48 121 0 105 1 0 1 1 0 8 0 ucredpl 96 12327 0 12317 1 0 1 1 0 8 0 zombiepl 144 18172 0 18168 5 4 1 1 0 8 0 processpl 1000 18235 0 18168 13 4 9 9 0 8 0 procpl 672 42128 0 42047 22 14 8 9 0 8 0 sosppl 168 43 0 43 4 4 0 1 0 8 0 sockpl 448 14270 0 14247 248 245 3 25 0 8 0 mcl64k 65536 175 0 175 35 35 0 1 0 8 0 mcl16k 16384 66 0 66 22 22 0 1 0 8 0 mcl12k 12288 227 0 227 29 29 0 1 0 8 0 mcl9k 9216 78 0 78 19 19 0 1 0 8 0 mcl8k 8192 222 0 222 35 35 0 1 0 8 0 mcl4k 4096 732 0 732 28 27 1 1 0 8 1 mcl2k2 2112 95 0 95 34 34 0 1 0 8 0 mcl2k 2048 48542 0 48496 116 108 8 18 0 8 0 mtagpl 96 841 0 523 12 4 8 10 0 8 0 mbufpl 256 154355 0 153854 48 12 36 47 0 8 0 bufpl 288 23128 0 16721 458 0 458 458 0 8 0 anonpl 24 3073379 0 3062523 225 128 97 128 0 188 0 amapchunkpl 152 269511 0 269044 77 56 21 51 0 158 1 amappl16 200 43604 0 43291 165 147 18 52 0 8 0 amappl15 192 3829 0 3828 5 4 1 1 0 8 0 amappl14 184 2366 0 2356 1 0 1 1 0 8 0 amappl13 176 6120 0 6117 1 0 1 1 0 8 0 amappl12 168 4352 0 4345 1 0 1 1 0 8 0 amappl11 160 2612 0 2594 1 0 1 1 0 8 0 amappl10 152 30 0 24 1 0 1 1 0 8 0 amappl9 144 761 0 753 1 0 1 1 0 8 0 amappl8 136 1750 0 1542 8 0 8 8 0 8 0 amappl7 128 260 0 249 1 0 1 1 0 8 0 amappl6 120 597 0 570 2 1 1 2 0 8 0 amappl5 112 11944 0 11932 1 0 1 1 0 8 0 amappl4 104 7794 0 7748 2 0 2 2 0 8 0 amappl3 96 55676 0 55631 2 0 2 2 0 8 0 amappl2 88 24920 0 24846 3 1 2 3 0 8 0 amappl1 80 421898 0 421289 34 20 14 19 0 8 0 amappl 88 91826 0 91680 4 0 4 4 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 72 144 0 14 3 0 3 3 0 8 0 uaddrrnd 24 18186 0 18159 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 18186 0 18159 1 0 1 1 0 8 0 vmmpekpl 168 108497 0 108438 3 0 3 3 0 8 0 vmmpepl 168 1688727 0 1686368 234 118 116 130 0 357 0 vmsppl 272 18185 0 18158 7 4 3 3 0 8 0 rwobjpl 24 397247 0 389768 48 2 46 47 0 8 0 pdppl 4096 36378 0 36318 700 634 66 72 0 8 6 pvpl 32 6072941 0 6057740 333 174 159 247 0 265 0 pmappl 216 18185 0 18158 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2189 0 1406 24 0 24 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:437 panic(ffffffff82588abf) at panic+0x161 sys/kern/subr_prf.c:202 pmap_remove_ptes(fffffd806ab0a440,fffffd8005ac6680,7f82b0249098,56049213000,56049225000,0,62e5e1d0d86b9e1c) at pmap_remove_ptes+0x32e pmap_do_remove(fffffd806ab0a440,56049213000,56049225000,0) at pmap_do_remove+0x438 sys/arch/amd64/amd64/pmap.c:1865 uvm_unmap_kill_entry_withlock(fffffd8079091110,fffffd806bfbe168,0) at uvm_unmap_kill_entry_withlock+0x1a2 sys/uvm/uvm_map.c:2139 uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd8079091110) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3684 reaper(ffff8000ffff8fc8) at reaper+0x15d sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82588abf) at panic+0x161 sys/kern/subr_prf.c:202 pmap_remove_ptes(fffffd806ab0a440,fffffd8005ac6680,7f82b0249098,56049213000,56049225000,0,62e5e1d0d86b9e1c) at pmap_remove_ptes+0x32e pmap_do_remove(fffffd806ab0a440,56049213000,56049225000,0) at pmap_do_remove+0x438 sys/arch/amd64/amd64/pmap.c:1865 uvm_unmap_kill_entry_withlock(fffffd8079091110,fffffd806bfbe168,0) at uvm_unmap_kill_entry_withlock+0x1a2 sys/uvm/uvm_map.c:2139 uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8079091110) at uvm_map_teardown+0x167 sys/uvm/uvm_map.c:2771 uvmspace_free(fffffd8079091110) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3684 reaper(ffff8000ffff8fc8) at reaper+0x15d sys/kern/kern_exit.c:454 end trace frame: 0x0, count: -8