panic: pool_do_get: pvpl free list modified: page 0xfffffd805bb59000; item addr 0xfffffd805bb59010; offset 0x0=0x0 != 0x7043ec05b2a4796c Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *375710 37579 0 0 0x4000000 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82451e57) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8280cbd8,2,ffff80001e7cfd48) at pool_do_get+0x42a sys/kern/subr_pool.c:738 pool_get(ffffffff8280cbd8,2) at pool_get+0xb5 sys/kern/subr_pool.c:581 pmap_enter(fffffd80575bdbc0,1b2da3b000,57382000,3,33) at pmap_enter+0x160 uvm_fault(fffffd80672f9448,1b2da3b000,2,3) at uvm_fault+0x108c sys/uvm/uvm_fault.c:1217 uvm_fault_wire(fffffd80672f9448,1b2d920000,1b2e920000,3) at uvm_fault_wire+0x70 sys/uvm/uvm_fault.c:1295 uvm_map_pageable_wire(fffffd80672f9448,fffffd80577afc48,0,ffff80001f99b000,ffffffff8221bb90,0) at uvm_map_pageable_wire+0x2cd sys/uvm/uvm_map.c:2360 sys_mlockall(ffff80001d709020,ffff80001e7d0268,ffff80001e7d02b0) at sys_mlockall+0x6a sys/uvm/uvm_mmap.c:828 syscall(ffff80001e7d0330) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ba6216860, count: 4 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 pool_do_get: pvpl free list modified: page 0xfffffd805bb59000; item addr 0xfffffd805bb59010; offset 0x0=0x0 != 0x7043ec05b2a4796c ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82451e57) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8280cbd8,2,ffff80001e7cfd48) at pool_do_get+0x42a sys/kern/subr_pool.c:738 pool_get(ffffffff8280cbd8,2) at pool_get+0xb5 sys/kern/subr_pool.c:581 pmap_enter(fffffd80575bdbc0,1b2da3b000,57382000,3,33) at pmap_enter+0x160 uvm_fault(fffffd80672f9448,1b2da3b000,2,3) at uvm_fault+0x108c sys/uvm/uvm_fault.c:1217 uvm_fault_wire(fffffd80672f9448,1b2d920000,1b2e920000,3) at uvm_fault_wire+0x70 sys/uvm/uvm_fault.c:1295 uvm_map_pageable_wire(fffffd80672f9448,fffffd80577afc48,0,ffff80001f99b000,ffffffff8221bb90,0) at uvm_map_pageable_wire+0x2cd sys/uvm/uvm_map.c:2360 sys_mlockall(ffff80001d709020,ffff80001e7d0268,ffff80001e7d02b0) at sys_mlockall+0x6a sys/uvm/uvm_mmap.c:828 syscall(ffff80001e7d0330) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ba6216860, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001e7cfbb0 rbx 0xffff80001e7cfc60 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff81c35ebf kprintf+0x15f r9 0x1 r10 0x2 r11 0x4af96b106a2ac93f r12 0x3000000008 r13 0xffff80001e7cfbc0 r14 0x100 r15 0x1 rip 0xffffffff815297e8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001e7cfba0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.0) pid=375710 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d709500,0xffffffff8280e640 process=0xffff80001f848030 user=0xffff80001e7cb000, vmspace=0xfffffd80672f9448 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=3, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 37579 506561 37405 0 2 0 syz-executor.0 *37579 375710 37405 0 7 0x4000000 syz-executor.0 41675 138660 0 0 3 0x14280 nfsidl nfsio 92978 24786 0 0 3 0x14280 nfsidl nfsio 51157 463302 0 0 3 0x14280 nfsidl nfsio 57742 184639 0 0 3 0x14280 nfsidl nfsio 1481 108431 0 0 3 0x14280 nfsidl nfsio 47146 89805 0 0 3 0x14280 nfsidl nfsio 66533 518040 0 0 3 0x14280 nfsidl nfsio 10784 472476 0 0 3 0x14280 nfsidl nfsio 77572 493759 0 0 3 0x14280 nfsidl nfsio 87952 81607 0 0 3 0x14280 nfsidl nfsio 92788 66636 0 0 3 0x14280 nfsidl nfsio 21470 47389 0 0 3 0x14280 nfsidl nfsio 76806 98747 0 0 3 0x14280 nfsidl nfsio 90293 302503 0 0 3 0x14280 nfsidl nfsio 96520 439290 0 0 3 0x14280 nfsidl nfsio 46103 348467 0 0 3 0x14280 nfsidl nfsio 21238 194210 0 0 3 0x14280 nfsidl nfsio 97396 198371 0 0 3 0x14280 nfsidl nfsio 26979 41507 0 0 3 0x14280 nfsidl nfsio 88419 469964 0 0 3 0x14280 nfsidl nfsio 13625 24953 16376 0 2 0x2 syz-executor.1 19604 202550 0 0 3 0x14200 acct acct 17807 321785 0 0 3 0x14200 bored sosplice 37405 456472 16376 0 2 0x482 syz-executor.0 16376 213276 6532 0 3 0x82 thrsleep syz-fuzzer 16376 505708 6532 0 3 0x4000082 nanosleep syz-fuzzer 16376 161072 6532 0 3 0x4000082 kqread syz-fuzzer 16376 22269 6532 0 3 0x4000082 thrsleep syz-fuzzer 16376 373999 6532 0 3 0x4000082 thrsleep syz-fuzzer 16376 514913 6532 0 3 0x4000082 thrsleep syz-fuzzer 16376 433025 6532 0 3 0x4000082 thrsleep syz-fuzzer 6532 239575 4724 0 3 0x10008a pause ksh 4724 472134 73945 0 3 0x92 select sshd 62041 234179 1 0 3 0x100083 ttyin getty 73945 502687 1 0 3 0x80 select sshd 15033 339930 25116 73 3 0x100090 kqread syslogd 25116 445466 1 0 3 0x100082 netio syslogd 35531 380198 1 77 3 0x100090 poll dhclient 10793 125970 1 0 3 0x80 poll dhclient 52332 359210 0 0 3 0x14200 bored smr 45504 333546 0 0 2 0x14200 zerothread 71436 1058 0 0 3 0x14200 aiodoned aiodoned 4283 442583 0 0 3 0x14200 syncer update 86460 451239 0 0 3 0x14200 cleaner cleaner 87207 485963 0 0 3 0x14200 reaper reaper 3703 466136 0 0 3 0x14200 pgdaemon pagedaemon 21291 478107 0 0 3 0x14200 bored crynlk 65963 240095 0 0 3 0x14200 bored crypto 39442 284976 0 0 3 0x40014200 acpi0 acpi0 86667 418638 0 0 3 0x14200 bored softnet 56229 8820 0 0 3 0x14200 bored systqmp 4093 203190 0 0 3 0x14200 bored systq 83991 414276 0 0 3 0x40014200 bored softclock 56332 274948 0 0 3 0x40014200 idle0 1 434822 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 9546 6815K 6815K 78643K 11473 0 pcb 13 8K 8K 78643K 91 0 rtable 109 6K 10K 78643K 531 0 ifaddr 78 15K 17K 78643K 183 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 28 0 ioctlops 0 0K 4K 78643K 73 0 iov 0 0K 16K 78643K 79 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1540 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 46 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 391 0 proc 48 38K 63K 78643K 450 0 subproc 32 2K 2K 78643K 51 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 64 3K 3K 78643K 111 0 ether_multi 1 0K 0K 78643K 11 0 mrt 0 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 239 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 140 106K 106K 78643K 1763 0 UVM aobj 16 2K 2K 78643K 32 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 44 0 NDP 12 0K 0K 78643K 27 0 temp 132 3856K 3928K 78643K 16037 0 kqueue 4 5K 8K 78643K 25 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 arp 64 9 0 4 1 0 1 1 0 8 0 rtpcb 80 31 0 29 1 0 1 1 0 8 0 rtentry 112 72 0 34 2 0 2 2 0 8 0 unpcb 120 285 0 277 1 0 1 1 0 8 0 syncache 264 10 0 10 2 2 0 1 0 8 0 tcpqe 32 109 0 109 1 1 0 1 0 8 0 tcpcb 544 148 0 144 1 0 1 1 0 8 0 ipq 40 7 0 7 2 1 1 1 0 8 1 ipqe 40 233 0 233 2 1 1 1 0 8 1 inpcb 280 518 0 511 3 1 2 2 0 8 1 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 12 0 8 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 swfcl 56 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 97 0 91 2 0 2 2 0 8 1 pftag 88 20 0 20 2 1 1 1 0 8 1 pfrule 1360 18 0 10 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 306 0 127 14 2 12 13 0 8 0 art_table 32 307 0 127 2 0 2 2 0 8 0 art_node 16 70 0 35 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 6 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 40 0 30 1 0 1 1 0 8 0 shmpl 112 30 0 16 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1936 0 540 88 0 88 88 0 8 0 ffsino 240 1936 0 540 83 0 83 83 0 8 0 nchpl 144 2722 0 1134 60 0 60 60 0 8 0 uvmvnodes 72 2221 0 0 41 0 41 41 0 8 0 vnodes 208 2221 0 0 117 0 117 117 0 8 0 namei 1024 7623 0 7622 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 528 8 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 36 0 28 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 0 1 1 0 8 1 scxspl 192 7818 0 7818 1 0 1 1 0 8 1 plimitpl 152 42 0 34 1 0 1 1 0 8 0 sigapl 424 596 0 546 6 0 6 6 0 8 0 futexpl 56 8188 0 8188 1 0 1 1 0 8 1 knotepl 112 101 0 82 1 0 1 1 0 8 0 kqueuepl 144 58 0 54 1 0 1 1 0 8 0 pipelkpl 16 124 0 114 1 0 1 1 0 8 0 pipepl 120 248 0 229 1 0 1 1 0 8 0 fdescpl 432 560 0 546 2 0 2 2 0 8 0 filepl 120 3723 0 3624 4 0 4 4 0 8 1 lockfpl 104 141 0 139 1 0 1 1 0 8 0 lockfspl 48 56 0 54 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 10 1 0 1 1 0 8 0 ucredpl 96 346 0 339 1 0 1 1 0 8 0 zombiepl 144 546 0 546 1 0 1 1 0 8 1 processpl 920 596 0 546 7 0 7 7 0 8 0 procpl 624 1019 0 962 5 0 5 5 0 8 0 sockpl 400 838 0 821 4 0 4 4 0 8 2 mcl64k 65536 292 0 292 33 13 20 33 0 8 20 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 9 0 9 2 1 1 1 0 8 1 mcl9k 9216 6 0 6 2 1 1 1 0 8 1 mcl8k 8192 15 0 15 2 1 1 1 0 8 1 mcl4k 4096 42 0 42 3 2 1 1 0 8 1 mcl2k2 2112 4 0 4 3 2 1 1 0 8 1 mcl2k 2048 75325 0 75269 16 8 8 15 0 8 0 mtagpl 80 39 0 10 2 1 1 1 0 8 0 mbufpl 256 122952 0 122765 30 8 22 26 0 8 8 bufpl 280 6105 0 753 383 0 383 383 0 8 0 anonpl 16 78345 0 58479 85 5 80 80 0 107 0 amapchunkpl 152 2838 0 2434 19 3 16 16 0 158 0 amappl16 192 2925 0 2072 55 4 51 55 0 8 6 amappl15 184 9 0 7 1 0 1 1 0 8 0 amappl14 176 25 0 19 1 0 1 1 0 8 0 amappl13 168 42 0 39 1 0 1 1 0 8 0 amappl12 160 70 0 68 1 0 1 1 0 8 0 amappl11 152 63 0 53 1 0 1 1 0 8 0 amappl10 144 127 0 123 1 0 1 1 0 8 0 amappl9 136 545 0 542 1 0 1 1 0 8 0 amappl8 128 521 0 479 2 0 2 2 0 8 0 amappl7 120 217 0 205 1 0 1 1 0 8 0 amappl6 112 30 0 23 1 0 1 1 0 8 0 amappl5 104 558 0 546 1 0 1 1 0 8 0 amappl4 96 438 0 410 1 0 1 1 0 8 0 amappl3 88 113 0 107 1 0 1 1 0 8 0 amappl2 80 3594 0 3529 2 0 2 2 0 8 0 amappl1 72 19269 0 18846 23 14 9 17 0 8 0 amappl 80 1246 0 1195 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 31 0 16 1 0 1 1 0 8 0 uaddrrnd 24 568 0 546 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 568 0 546 1 0 1 1 0 8 0 vmmpekpl 168 7504 0 7468 2 0 2 2 0 8 0 vmmpepl 168 73410 0 71463 133 18 115 116 0 357 26 vmsppl 272 567 0 546 2 0 2 2 0 8 0 pdppl 4096 1142 0 1100 7 1 6 6 0 8 0 pvpl 32 250693 0 227427 265 7 258 260 0 265 70 pvpl: pool(0xffffffff8280cbd8:pvpl): free list modified: page 0xfffffd805bb59000; item ordinal 0; addr 0xfffffd805bb59010 (p 0xfffffd805bb59000); offset 0x0=0x0 pvpl: pool(0xffffffff8280cbd8:pvpl): page inconsistency: page 0xfffffd805bb59000; item ordinal 1; addr 0xff3fdb52e1d5c8d8 pmappl 200 567 0 546 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 297 0 37 8 0 8 8 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:398 panic(ffffffff82451e57) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8280cbd8,2,ffff80001e7cfd48) at pool_do_get+0x42a sys/kern/subr_pool.c:738 pool_get(ffffffff8280cbd8,2) at pool_get+0xb5 sys/kern/subr_pool.c:581 pmap_enter(fffffd80575bdbc0,1b2da3b000,57382000,3,33) at pmap_enter+0x160 uvm_fault(fffffd80672f9448,1b2da3b000,2,3) at uvm_fault+0x108c sys/uvm/uvm_fault.c:1217 uvm_fault_wire(fffffd80672f9448,1b2d920000,1b2e920000,3) at uvm_fault_wire+0x70 sys/uvm/uvm_fault.c:1295 uvm_map_pageable_wire(fffffd80672f9448,fffffd80577afc48,0,ffff80001f99b000,ffffffff8221bb90,0) at uvm_map_pageable_wire+0x2cd sys/uvm/uvm_map.c:2360 sys_mlockall(ffff80001d709020,ffff80001e7d0268,ffff80001e7d02b0) at sys_mlockall+0x6a sys/uvm/uvm_mmap.c:828 syscall(ffff80001e7d0330) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ba6216860, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82451e57) at panic+0x15c sys/kern/subr_prf.c:207 pool_do_get(ffffffff8280cbd8,2,ffff80001e7cfd48) at pool_do_get+0x42a sys/kern/subr_pool.c:738 pool_get(ffffffff8280cbd8,2) at pool_get+0xb5 sys/kern/subr_pool.c:581 pmap_enter(fffffd80575bdbc0,1b2da3b000,57382000,3,33) at pmap_enter+0x160 uvm_fault(fffffd80672f9448,1b2da3b000,2,3) at uvm_fault+0x108c sys/uvm/uvm_fault.c:1217 uvm_fault_wire(fffffd80672f9448,1b2d920000,1b2e920000,3) at uvm_fault_wire+0x70 sys/uvm/uvm_fault.c:1295 uvm_map_pageable_wire(fffffd80672f9448,fffffd80577afc48,0,ffff80001f99b000,ffffffff8221bb90,0) at uvm_map_pageable_wire+0x2cd sys/uvm/uvm_map.c:2360 sys_mlockall(ffff80001d709020,ffff80001e7d0268,ffff80001e7d02b0) at sys_mlockall+0x6a sys/uvm/uvm_mmap.c:828 syscall(ffff80001e7d0330) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ba6216860, count: -11