panic: pmap_remove_ptes: managed page without PG_PVLIST: va 0x110c24a000, opte 0x6d4a1001 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343f84d) at panic+0x1cf sys/kern/subr_prf.c:198 pmap_remove_pte(fffffd80750c21b8,fffffd80071c7d80,7f8008861180,110c230000,110c400000,0) at pmap_remove_pte pmap_do_remove(fffffd80750c21b8,110c230000,110e230000,0) at pmap_do_remove+0x53a sys/arch/amd64/amd64/pmap.c:1920 uvm_unmap_kill_entry_withlock(fffffd806ce8ee78,fffffd806b81e1c0,0) at uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1869 uvm_map_teardown(fffffd806ce8ee78) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffffd806ce8ee78) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 exit1(ffff80003c92c2d0,0,0,1) at exit1+0x6e6 sys/kern/kern_exit.c:259 sys_exit(ffff80003c92c2d0,ffff80003c9c1340,ffff80003c9c1290) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9c1340) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9c1340) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7147bf57b970, count: 5 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: managed page without PG_PVLIST: va 0x110c24a000, opte 0x6d4a1001 ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343f84d) at panic+0x1cf sys/kern/subr_prf.c:198 pmap_remove_pte(fffffd80750c21b8,fffffd80071c7d80,7f8008861180,110c230000,110c400000,0) at pmap_remove_pte pmap_do_remove(fffffd80750c21b8,110c230000,110e230000,0) at pmap_do_remove+0x53a sys/arch/amd64/amd64/pmap.c:1920 uvm_unmap_kill_entry_withlock(fffffd806ce8ee78,fffffd806b81e1c0,0) at uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1869 uvm_map_teardown(fffffd806ce8ee78) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffffd806ce8ee78) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 exit1(ffff80003c92c2d0,0,0,1) at exit1+0x6e6 sys/kern/kern_exit.c:259 sys_exit(ffff80003c92c2d0,ffff80003c9c1340,ffff80003c9c1290) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9c1340) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9c1340) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7147bf57b970, count: -10 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c9c0f00 rbx 0xfffffd80071c7d80 rdx 0 rcx 0 rax 0xffff80003c92c2d0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x604e89fa8b338262 r11 0x96e7ef59cd3ba6ca r12 0 r13 0x7f8008861250 r14 0 r15 0x1 rip 0xffffffff81718195 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c9c0ef0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=348743 pid=33762 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=80, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c92c2d0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c92d260,0xffff80003a4eba28 process=0xffff8000ffff8918 user=0xffff80003c9bc000, vmspace=0xfffffd806ce8ee78 estcpu=30, cpticks=9, pctcpu=0.8, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 30174 486683 25739 0 2 0 syz-executor 30174 427378 25739 0 3 0x4000080 fsleep syz-executor 88465 105048 70261 0 2 0 syz-executor 88465 338405 70261 0 3 0x4000080 fsleep syz-executor 76260 171082 86217 0 2 0 syz-executor 76260 336800 86217 0 3 0x4000080 fsleep syz-executor 76260 195588 86217 0 2 0x4000000 syz-executor 52039 259006 60952 0 2 0 syz-executor 52039 468512 60952 0 3 0x4000080 fifor syz-executor 52039 92013 60952 0 3 0x4000080 fsleep syz-executor 39896 114827 81151 0 3 0x80 nanoslp syz-executor 39896 236971 81151 0 3 0x4000080 ttyout syz-executor 39896 389988 81151 0 3 0x4000080 ttyout syz-executor 39896 256856 81151 0 3 0x4000080 fsleep syz-executor 5755 308951 0 0 3 0x14200 acct acct 36685 229071 0 0 3 0x14280 nfsidl nfsio 14630 512827 0 0 3 0x14280 nfsidl nfsio 20890 482529 0 0 3 0x14280 nfsidl nfsio 75675 161996 0 0 3 0x14280 nfsidl nfsio 81516 256392 0 0 3 0x14280 nfsidl nfsio 39668 372260 0 0 3 0x14280 nfsidl nfsio 27132 217011 0 0 3 0x14280 nfsidl nfsio 12384 50731 0 0 3 0x14280 nfsidl nfsio 98421 280928 0 0 3 0x14280 nfsidl nfsio 44008 225668 0 0 3 0x14280 nfsidl nfsio 40695 59890 0 0 3 0x14280 nfsidl nfsio 45177 76829 0 0 3 0x14280 nfsidl nfsio 62789 437777 0 0 3 0x14280 nfsidl nfsio 32428 267853 0 0 3 0x14280 nfsidl nfsio 95211 261053 0 0 3 0x14280 nfsidl nfsio 93126 246784 0 0 3 0x14280 nfsidl nfsio 65100 424023 0 0 3 0x14280 nfsidl nfsio 90146 492025 0 0 3 0x14280 nfsidl nfsio 2420 494490 0 0 3 0x14280 nfsidl nfsio 65685 426518 0 0 3 0x14280 nfsidl nfsio 70261 280828 3334 0 3 0x82 nanoslp syz-executor 81151 280119 3334 0 3 0x82 nanoslp syz-executor 96150 485780 3334 0 3 0x82 nanoslp syz-executor 98674 213494 3334 0 3 0x82 nanoslp syz-executor 62584 195551 3334 0 3 0x82 nanoslp syz-executor 60952 473667 3334 0 3 0x82 nanoslp syz-executor 25739 347422 3334 0 3 0x82 nanoslp syz-executor 86217 51043 3334 0 3 0x82 nanoslp syz-executor 3334 406217 53728 0 3 0x82 kqread syz-executor 53728 304124 65893 0 3 0x10008a sigsusp ksh 65893 201803 89602 0 3 0x98 kqread sshd-session 89602 18749 83060 0 3 0x92 kqread sshd-session 67233 266664 1 0 3 0x100083 ttyin getty 83060 401627 1 0 3 0x88 kqread sshd 61338 373051 38300 73 3 0x1100090 kqread syslogd 38300 208902 1 0 3 0x100082 sbwait syslogd 66903 134889 1 0 3 0x100080 kqread resolvd 9662 314672 5637 77 3 0x100092 kqread dhcpleased 2476 133519 5637 77 3 0x100092 kqread dhcpleased 5637 352154 1 0 3 0x80 kqread dhcpleased 89826 199083 0 0 3 0x14200 bored smr 16551 100807 0 0 2 0x14200 zerothread 12149 281365 0 0 3 0x14200 aiodoned aiodoned 68175 521693 0 0 3 0x14200 syncer update 96023 335638 0 0 3 0x14200 cleaner cleaner 11842 143184 0 0 3 0x14200 reaper reaper 6747 264220 0 0 3 0x14200 pgdaemon pagedaemon 68099 339984 0 0 3 0x14200 bored viomb 58283 217425 0 0 3 0x40014200 acpi0 acpi0 81862 16517 0 0 3 0x14200 bored softnet0 49815 287819 0 0 3 0x14200 bored systqmp 98928 348873 0 0 3 0x14200 bored systq 6222 332964 0 0 3 0x40014200 tmoslp softclock 52280 135970 0 0 3 0x40014200 idle0 1 145044 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 11058 12131K 13303K 166960K 14291 0 pcb 17 16K 17K 166960K 278 0 rtable 218 18K 20K 166960K 547 0 pf 34 13K 18K 166960K 171 0 ifaddr 35 6K 8K 166960K 100 0 ifgroup 47 1K 2K 166960K 166 0 sysctl 4 1K 9K 166960K 18 0 counters 33 17K 18K 166960K 163 0 ioctlops 0 0K 4K 166960K 360 0 iov 0 0K 24K 166960K 96 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1475 93K 93K 166960K 2615 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 29 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 73 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 1212 0 sigio 0 0K 0K 166960K 153 0 proc 62 59K 83K 166960K 567 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 212 0 in_multi 76 5K 7K 166960K 154 0 ether_multi 1 0K 0K 166960K 16 0 mrt 2 0K 0K 166960K 30 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 538 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 234 155K 169K 166960K 12199 0 UVM aobj 133 8K 8K 166960K 134 0 pinsyscall 38 76K 92K 166960K 2290 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 50 0 NDP 11 0K 1K 166960K 67 0 temp 81 9076K 9182K 166960K 39112 0 kqueue 13 20K 30K 166960K 220 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 120 165 0 161 1 0 1 1 0 8 0 rtentry 136 142 0 62 4 0 4 4 0 8 0 unpcb 144 1061 0 1044 9 3 6 6 0 8 5 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpcb 736 480 0 476 10 6 4 7 0 8 3 arp 96 20 0 5 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 1453 0 1446 12 5 7 7 0 8 6 ip6q 72 5 0 2 1 0 1 1 0 8 0 ip6af 40 7 0 4 1 0 1 1 0 8 0 nd6 112 29 0 10 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 1 1 1 0 8 1 ppxss 1072 117 0 117 2 1 1 1 0 8 1 pppxif 1416 8 0 8 2 1 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pfrktable 1344 16 0 15 2 1 1 1 0 8 0 pfanchor 1288 3 0 3 1 0 1 1 0 8 1 pftag 88 5 0 3 1 0 1 1 0 8 0 pfqueue 320 2 0 1 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 3 0 1 1 0 1 1 0 8 0 pfstate 384 2 0 1 1 0 1 1 0 8 0 pfrule 1360 11 0 10 1 0 1 1 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 617 0 286 31 1 30 30 0 8 4 art_table 40 621 0 286 5 0 5 5 0 8 0 art_node 32 142 0 72 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 37 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 67 0 57 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 3670 0 2222 92 0 92 92 0 8 0 ffsino 256 3670 0 2222 92 0 92 92 0 8 0 nchpl 144 5466 0 3775 64 0 64 64 0 8 0 rtmask 32 11 0 11 2 1 1 1 0 8 1 vnodes 216 4558 0 0 254 0 254 254 0 8 0 namei 1024 19676 0 19676 3 2 1 2 0 8 1 vcpupl 3904 3 0 1 1 0 1 1 0 8 0 vmpool 808 3 0 1 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 3 1 0 1 1 0 8 1 kstatmem 264 102 0 80 4 1 3 3 0 8 1 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 18343 0 18343 10 2 8 8 1 8 8 plimitpl 152 731 0 711 1 0 1 1 0 8 0 sigapl 424 1514 0 1450 9 1 8 8 0 8 0 knotepl 120 68431 0 68384 29 19 10 17 0 8 8 kqueuepl 184 430 0 421 6 0 6 6 0 8 5 pipepl 304 531 0 502 13 5 8 8 0 8 5 fdescpl 448 1478 0 1449 5 1 4 5 0 8 0 filepl 120 11185 0 10962 18 4 14 14 0 8 5 lockfpl 104 829 0 827 4 0 4 4 0 8 3 lockfspl 48 306 0 304 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 2159 0 2147 1 0 1 1 0 8 0 zombiepl 144 1453 0 1450 1 0 1 1 0 8 0 processpl 1152 1514 0 1450 5 0 5 5 0 8 0 procpl 664 3051 0 2978 8 1 7 7 0 8 0 sosppl 176 8 0 8 2 1 1 1 0 8 1 sockpl 552 2725 0 2696 18 8 10 13 0 8 7 mcl64k 65536 92 0 92 2 1 1 1 0 8 1 mcl16k 16384 48 0 48 2 1 1 1 0 8 1 mcl12k 12288 16 0 16 2 1 1 1 0 8 1 mcl9k 9216 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 126 0 126 2 1 1 1 0 8 1 mcl4k 4096 4069 0 4015 15 6 9 14 0 8 2 mcl2k2 2112 2 0 2 1 1 0 1 0 8 0 mcl2k 2048 1186 0 1183 3 1 2 2 0 8 1 mtagpl 96 95 0 18 3 0 3 3 0 8 0 mbufpl 256 17600 0 17395 20 5 15 17 0 8 0 bufpl 280 5580 0 111 391 0 391 391 0 8 0 anonpl 24 211037 0 207571 72 22 50 50 0 187 21 amapchunkpl 152 40949 0 40436 40 6 34 34 0 158 13 amappl16 200 4069 0 4033 34 23 11 17 0 8 5 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 427 0 426 1 0 1 1 0 8 0 amappl13 176 127 0 117 1 0 1 1 0 8 0 amappl12 168 1715 0 1686 2 0 2 2 0 8 0 amappl11 160 1 0 1 1 1 0 1 0 8 0 amappl10 152 68 0 58 1 0 1 1 0 8 0 amappl9 144 258 0 258 1 1 0 1 0 8 0 amappl8 136 120 0 118 1 0 1 1 0 8 0 amappl7 128 145 0 133 1 0 1 1 0 8 0 amappl6 120 152 0 151 1 0 1 1 0 8 0 amappl5 112 94 0 86 1 0 1 1 0 8 0 amappl4 104 299 0 281 1 0 1 1 0 8 0 amappl3 96 8321 0 8205 4 0 4 4 0 8 0 amappl2 88 520 0 467 2 0 2 2 0 8 0 amappl1 80 13727 0 13166 15 2 13 15 0 8 0 amappl 88 11325 0 11153 5 0 5 5 0 92 0 uvmvnodes 80 145 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma4096 4096 2 0 2 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 8 0 8 2 1 1 1 0 8 1 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 133 0 1 3 0 3 3 0 8 0 uaddrrnd 24 1478 0 1448 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1478 0 1448 1 0 1 1 0 8 0 vmmpekpl 168 13677 0 13637 2 0 2 2 0 8 0 vmmpepl 168 96834 0 94973 105 11 94 94 0 357 10 vmsppl 368 1477 0 1448 4 1 3 4 0 8 0 rwobjpl 40 26362 0 25213 17 2 15 15 0 8 2 pdppl 4096 2968 0 2900 98 29 69 78 0 8 1 pvpl 32 663970 0 651112 147 23 124 124 0 265 18 pmappl 216 1480 0 1449 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 396 0 59 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(ffffffff8343f84d) at panic+0x1cf sys/kern/subr_prf.c:198 pmap_remove_pte(fffffd80750c21b8,fffffd80071c7d80,7f8008861180,110c230000,110c400000,0) at pmap_remove_pte pmap_do_remove(fffffd80750c21b8,110c230000,110e230000,0) at pmap_do_remove+0x53a sys/arch/amd64/amd64/pmap.c:1920 uvm_unmap_kill_entry_withlock(fffffd806ce8ee78,fffffd806b81e1c0,0) at uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1869 uvm_map_teardown(fffffd806ce8ee78) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffffd806ce8ee78) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 exit1(ffff80003c92c2d0,0,0,1) at exit1+0x6e6 sys/kern/kern_exit.c:259 sys_exit(ffff80003c92c2d0,ffff80003c9c1340,ffff80003c9c1290) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9c1340) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9c1340) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7147bf57b970, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343f84d) at panic+0x1cf sys/kern/subr_prf.c:198 pmap_remove_pte(fffffd80750c21b8,fffffd80071c7d80,7f8008861180,110c230000,110c400000,0) at pmap_remove_pte pmap_do_remove(fffffd80750c21b8,110c230000,110e230000,0) at pmap_do_remove+0x53a sys/arch/amd64/amd64/pmap.c:1920 uvm_unmap_kill_entry_withlock(fffffd806ce8ee78,fffffd806b81e1c0,0) at uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1869 uvm_map_teardown(fffffd806ce8ee78) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffffd806ce8ee78) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2497 exit1(ffff80003c92c2d0,0,0,1) at exit1+0x6e6 sys/kern/kern_exit.c:259 sys_exit(ffff80003c92c2d0,ffff80003c9c1340,ffff80003c9c1290) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9c1340) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9c1340) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7147bf57b970, count: -10