panic: pool_do_get: pkpcb: page empty Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *260412 90723 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b9531) at panic+0x1cf sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a5da88,9,ffff80003c959138) at pool_do_get+0x537 sys/kern/subr_pool.c:732 pool_get(ffffffff83a5da88,9) at pool_get+0x11a sys/kern/subr_pool.c:-1 pfkeyv2_attach(ffff800001618478,0,1) at pfkeyv2_attach+0xe9 sys/net/pfkeyv2.c:-1 socreate(1e,ffff80003c959260,3,0) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline] socreate(1e,ffff80003c959260,3,0) at socreate+0x22f sys/kern/uipc_socket.c:220 sys_socket(ffff8000368de7f8,ffff80003c9593a0,ffff80003c9592f0) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102 syscall(ffff80003c9593a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9593a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c6d6cd0a20, count: 6 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: pool_do_get: pkpcb: page empty ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b9531) at panic+0x1cf sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a5da88,9,ffff80003c959138) at pool_do_get+0x537 sys/kern/subr_pool.c:732 pool_get(ffffffff83a5da88,9) at pool_get+0x11a sys/kern/subr_pool.c:-1 pfkeyv2_attach(ffff800001618478,0,1) at pfkeyv2_attach+0xe9 sys/net/pfkeyv2.c:-1 socreate(1e,ffff80003c959260,3,0) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline] socreate(1e,ffff80003c959260,3,0) at socreate+0x22f sys/kern/uipc_socket.c:220 sys_socket(ffff8000368de7f8,ffff80003c9593a0,ffff80003c9592f0) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102 syscall(ffff80003c9593a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9593a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c6d6cd0a20, count: -9 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c958fb0 rbx 0 rdx 0xffff8000015d8700 rcx 0 rax 0xffff8000368de7f8 r8 0x101010101010101 r9 0x8080808080808080 r10 0xb095d7b4a5706125 r11 0x400aa6412d742761 r12 0 r13 0 r14 0 r15 0x1 rip 0xffffffff816d00e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c958fa0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=260412 pid=90723 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000368de560,0xffff80002a79c558 process=0xffff80002a7bcd90 user=0xffff80003c954000, vmspace=0xfffffd800b26f5d8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97592 386905 73251 0 2 0 syz-executor 97592 121863 73251 0 3 0x4000080 fsleep syz-executor 97708 326901 25745 0 2 0 syz-executor 97708 149822 25745 0 3 0x4000080 fsleep syz-executor 90723 133305 49452 0 2 0 syz-executor *90723 260412 49452 0 7 0x4000000 syz-executor 33167 269587 29765 0 2 0 syz-executor 41572 33716 33688 0 2 0 syz-executor 41572 429351 33688 0 3 0x4000080 fsleep syz-executor 4844 497605 54457 0 2 0 syz-executor 4844 456702 54457 0 2 0x4000000 syz-executor 4844 335217 54457 0 3 0x4000000 smrbar syz-executor 22960 330220 6739 0 3 0x3000 suspend syz-executor 22960 81713 6739 0 2 0x4081000 syz-executor 73251 135641 40613 0 3 0x82 nanoslp syz-executor 33688 118848 40613 0 3 0x82 nanoslp syz-executor 25745 11846 40613 0 3 0x82 nanoslp syz-executor 83038 464882 1 0 3 0x100083 ttyin getty 6739 517412 40613 0 3 0x82 wait syz-executor 47624 314422 40613 0 3 0x82 wait syz-executor 63945 210035 0 0 3 0x14280 nfsidl nfsio 21243 347997 0 0 3 0x14280 nfsidl nfsio 71779 317641 0 0 3 0x14280 nfsidl nfsio 16947 128317 0 0 3 0x14280 nfsidl nfsio 11278 402845 0 0 3 0x14280 nfsidl nfsio 68761 198397 0 0 3 0x14280 nfsidl nfsio 75669 499097 0 0 3 0x14280 nfsidl nfsio 37703 336173 0 0 3 0x14280 nfsidl nfsio 66737 444256 0 0 3 0x14280 nfsidl nfsio 76342 363752 0 0 3 0x14280 nfsidl nfsio 27192 302452 0 0 3 0x14280 nfsidl nfsio 81994 42185 0 0 3 0x14280 nfsidl nfsio 27569 233620 0 0 3 0x14280 nfsidl nfsio 42689 205245 0 0 3 0x14280 nfsidl nfsio 67108 309409 0 0 3 0x14280 nfsidl nfsio 51698 329118 0 0 3 0x14280 nfsidl nfsio 41952 411575 0 0 3 0x14280 nfsidl nfsio 48907 191305 0 0 3 0x14280 nfsidl nfsio 98557 85929 0 0 3 0x14280 nfsidl nfsio 56757 135302 0 0 3 0x14280 nfsidl nfsio 54457 520197 40613 0 3 0x82 nanoslp syz-executor 49452 154856 40613 0 3 0x82 nanoslp syz-executor 29765 517562 40613 0 3 0x82 nanoslp syz-executor 40613 156282 20811 0 3 0x82 kqread syz-executor 20811 455942 8837 0 3 0x10008a sigsusp ksh 8837 430626 68290 0 3 0x98 kqread sshd-session 68290 158201 87526 0 3 0x92 kqread sshd-session 87526 195581 1 0 3 0x88 kqread sshd 46685 379052 6030 73 3 0x1100090 kqread syslogd 6030 366449 1 0 3 0x100082 sbwait syslogd 76106 82441 1 0 3 0x100080 kqread resolvd 92375 136883 86102 77 3 0x100092 kqread dhcpleased 18904 426655 86102 77 3 0x100092 kqread dhcpleased 86102 246801 1 0 3 0x80 kqread dhcpleased 86156 151673 0 0 3 0x14200 bored smr 82349 120072 0 0 2 0x14200 zerothread 23096 48957 0 0 3 0x14200 aiodoned aiodoned 80937 253754 0 0 3 0x14200 syncer update 59372 361908 0 0 3 0x14200 cleaner cleaner 32051 98688 0 0 3 0x14200 reaper reaper 6664 252636 0 0 3 0x14200 pgdaemon pagedaemon 76410 72473 0 0 3 0x14200 bored viomb 4243 20281 0 0 3 0x40014200 acpi0 acpi0 78154 31481 0 0 2 0x14200 softnet0 19357 45696 0 0 3 0x14200 bored systqmp 43217 16766 0 0 3 0x14200 bored systq 53910 368685 0 0 3 0x40014200 tmoslp softclock 39287 361058 0 0 3 0x40014200 idle0 1 38123 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 11071 12142K 13250K 166960K 15466 0 pcb 17 15K 23K 166960K 585 0 rtable 248 11K 11K 166960K 978 0 pf 36 13K 15K 166960K 235 0 ifaddr 42 7K 8K 166960K 171 0 ifgroup 55 2K 2K 166960K 266 0 sysctl 4 1K 9K 166960K 23 0 counters 37 18K 18K 166960K 180 0 ioctlops 0 0K 4K 166960K 802 0 iov 0 0K 28K 166960K 89 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1452 91K 91K 166960K 3253 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 25 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 171 0 dirhash 12 2K 3K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 1809 0 sigio 0 0K 0K 166960K 42 0 proc 60 59K 100K 166960K 911 0 subproc 72 4K 4K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 417 0 in_multi 90 6K 7K 166960K 274 0 ether_multi 1 0K 0K 166960K 22 0 mrt 3 0K 0K 166960K 44 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 688 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 224 151K 174K 166960K 17657 0 UVM aobj 22 20K 20K 166960K 25 0 pinsyscall 38 76K 94K 166960K 3064 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 142 0 NDP 14 0K 2K 166960K 117 0 temp 84 9076K 9318K 166960K 74320 0 kqueue 15 24K 32K 166960K 336 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 120 181 0 178 1 0 1 1 0 8 0 rtentry 136 251 0 158 4 0 4 4 0 8 0 unpcb 144 1456 0 1440 5 3 2 4 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpqe 32 6 0 6 1 1 0 1 0 8 0 tcpcb 736 725 0 719 14 7 7 7 0 8 6 arp 96 40 0 23 1 0 1 1 0 8 0 ipq 40 8 0 5 1 0 1 1 0 8 0 ipqe 40 15 0 12 1 0 1 1 0 8 0 inpcb 328 1942 0 1932 16 9 7 7 0 8 6 ip6q 72 5 0 0 1 0 1 1 0 8 0 ip6af 40 5 0 0 1 0 1 1 0 8 0 nd6 112 51 0 30 1 0 1 1 0 8 0 pkpcb 40 5 0 5 3 2 1 1 0 8 1 pkpcb: pool(0xffffffff83a5da88:pkpcb): page inconsistency: page 0x0; at page head addr 0xfffffd8066fa0f90 (p 0xfffffd8066fa0000) kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 1 1 1 0 8 1 ppxss 1072 120 0 117 3 2 1 1 0 8 0 pppxif 1384 13 0 13 3 2 1 1 0 8 1 pfrktable 1344 67 0 67 3 2 1 1 0 8 1 rttmr 136 4 0 4 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1092 0 685 39 11 28 29 0 8 1 art_table 40 1096 0 685 5 0 5 5 0 8 0 art_node 32 247 0 163 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 1 0 1 1 0 8 0 semupl 112 5 0 5 4 3 1 1 0 8 1 semapl 112 164 0 154 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 4670 0 3198 93 0 93 93 0 8 0 ffsino 256 4670 0 3198 93 0 93 93 0 8 0 nchpl 144 7194 0 5479 64 0 64 64 0 8 0 rtmask 32 19 0 18 5 4 1 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 26198 0 26198 5 3 2 2 0 8 2 vcpupl 3904 11 0 2 2 0 2 2 0 8 0 vmpool 808 11 0 2 1 0 1 1 0 8 0 kstatmem 264 172 0 144 2 0 2 2 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 11 0 11 4 3 1 1 0 8 1 scxspl 216 36659 0 36659 11 9 2 8 1 8 2 plimitpl 152 436 0 420 1 0 1 1 0 8 0 sigapl 424 2107 0 2044 8 0 8 8 0 8 0 knotepl 120 74994 0 74493 101 85 16 31 0 8 0 kqueuepl 184 658 0 646 7 6 1 4 0 8 0 pipepl 304 320 0 293 8 5 3 8 0 8 0 fdescpl 448 2069 0 2040 5 1 4 5 0 8 0 filepl 120 14658 0 14444 22 11 11 14 0 8 2 lockfpl 104 886 0 880 2 1 1 2 0 8 0 lockfspl 48 307 0 301 1 0 1 1 0 8 0 sessionpl 144 31 0 23 1 0 1 1 0 8 0 pgrppl 48 62 0 46 1 0 1 1 0 8 0 ucredpl 104 2049 0 2037 1 0 1 1 0 8 0 zombiepl 144 2218 0 2216 2 1 1 1 0 8 0 processpl 1152 2107 0 2044 5 0 5 5 0 8 0 procpl 664 4516 0 4446 7 0 7 7 0 8 0 sosppl 176 10 0 10 3 2 1 1 0 8 1 sockpl 552 3695 0 3665 18 8 10 10 0 8 7 mcl64k 65536 52 0 52 5 4 1 1 0 8 1 mcl16k 16384 4 0 4 2 1 1 1 0 8 1 mcl12k 12288 3 0 3 2 1 1 1 0 8 1 mcl9k 9216 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 19 0 19 5 4 1 1 0 8 1 mcl4k 4096 4603 0 4548 16 7 9 15 0 8 1 mcl2k 2048 1786 0 1775 8 6 2 5 0 8 0 mtagpl 96 167 0 39 4 0 4 4 0 8 0 mbufpl 256 23416 0 23127 96 67 29 84 0 8 8 bufpl 280 12487 0 6269 445 0 445 445 0 8 0 anonpl 24 332986 0 329663 130 58 72 72 0 187 31 amapchunkpl 152 62453 0 61972 69 34 35 35 0 158 16 amappl16 200 7158 0 7124 86 70 16 29 0 8 8 amappl15 192 4 0 3 1 0 1 1 0 8 0 amappl14 184 484 0 483 1 0 1 1 0 8 0 amappl13 176 124 0 114 1 0 1 1 0 8 0 amappl12 168 2330 0 2301 2 0 2 2 0 8 0 amappl11 160 30 0 30 1 1 0 1 0 8 0 amappl10 152 97 0 87 1 0 1 1 0 8 0 amappl9 144 266 0 266 1 1 0 1 0 8 0 amappl8 136 124 0 121 1 0 1 1 0 8 0 amappl7 128 48 0 45 1 0 1 1 0 8 0 amappl6 120 360 0 349 1 0 1 1 0 8 0 amappl5 112 76 0 69 1 0 1 1 0 8 0 amappl4 104 485 0 453 1 0 1 1 0 8 0 amappl3 96 10425 0 10335 3 0 3 3 0 8 0 amappl2 88 2125 0 2060 2 0 2 2 0 8 0 amappl1 80 16080 0 15533 13 1 12 13 0 8 0 amappl 88 16569 0 16408 5 0 5 5 0 92 0 uvmvnodes 80 160 0 0 4 0 4 4 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 8 0 8 2 2 0 1 0 8 0 dma128 128 254 0 254 1 1 0 1 0 8 0 dma64 64 7 0 7 2 1 1 1 0 8 1 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 24 0 3 1 0 1 1 0 8 0 uaddrrnd 24 2069 0 2039 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2069 0 2039 1 0 1 1 0 8 0 vmmpekpl 168 16389 0 16351 3 0 3 3 0 8 0 vmmpepl 168 133940 0 132096 138 35 103 103 0 357 17 vmsppl 368 2068 0 2039 4 1 3 4 0 8 0 rwobjpl 40 35834 0 34805 16 0 16 16 0 8 1 pdppl 4096 4166 0 4091 117 42 75 80 0 8 0 pvpl 32 938986 0 930436 272 117 155 155 0 265 50 pmappl 216 2079 0 2041 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 519 0 161 12 0 12 12 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(ffffffff833b9531) at panic+0x1cf sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a5da88,9,ffff80003c959138) at pool_do_get+0x537 sys/kern/subr_pool.c:732 pool_get(ffffffff83a5da88,9) at pool_get+0x11a sys/kern/subr_pool.c:-1 pfkeyv2_attach(ffff800001618478,0,1) at pfkeyv2_attach+0xe9 sys/net/pfkeyv2.c:-1 socreate(1e,ffff80003c959260,3,0) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline] socreate(1e,ffff80003c959260,3,0) at socreate+0x22f sys/kern/uipc_socket.c:220 sys_socket(ffff8000368de7f8,ffff80003c9593a0,ffff80003c9592f0) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102 syscall(ffff80003c9593a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9593a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c6d6cd0a20, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b9531) at panic+0x1cf sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a5da88,9,ffff80003c959138) at pool_do_get+0x537 sys/kern/subr_pool.c:732 pool_get(ffffffff83a5da88,9) at pool_get+0x11a sys/kern/subr_pool.c:-1 pfkeyv2_attach(ffff800001618478,0,1) at pfkeyv2_attach+0xe9 sys/net/pfkeyv2.c:-1 socreate(1e,ffff80003c959260,3,0) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline] socreate(1e,ffff80003c959260,3,0) at socreate+0x22f sys/kern/uipc_socket.c:220 sys_socket(ffff8000368de7f8,ffff80003c9593a0,ffff80003c9592f0) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102 syscall(ffff80003c9593a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9593a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c6d6cd0a20, count: -9