panic: pool_do_get: pkpcb: page empty Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *213606 22713 0 0 0x4000000 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b8dff) at panic+0x1cf sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a3e160,9,ffff80003c9211a8) at pool_do_get+0x537 sys/kern/subr_pool.c:732 pool_get(ffffffff83a3e160,9) at pool_get+0x11a sys/kern/subr_pool.c:-1 pfkeyv2_attach(ffff80000166af68,2,1) at pfkeyv2_attach+0xe9 sys/net/pfkeyv2.c:-1 socreate(1e,ffff80003c9212d0,3,2) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline] socreate(1e,ffff80003c9212d0,3,2) at socreate+0x22f sys/kern/uipc_socket.c:220 sys_socket(ffff80003c913258,ffff80003c921410,ffff80003c921360) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102 syscall(ffff80003c921410) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c921410) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcbffd14b730, 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(ffffffff833b8dff) at panic+0x1cf sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a3e160,9,ffff80003c9211a8) at pool_do_get+0x537 sys/kern/subr_pool.c:732 pool_get(ffffffff83a3e160,9) at pool_get+0x11a sys/kern/subr_pool.c:-1 pfkeyv2_attach(ffff80000166af68,2,1) at pfkeyv2_attach+0xe9 sys/net/pfkeyv2.c:-1 socreate(1e,ffff80003c9212d0,3,2) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline] socreate(1e,ffff80003c9212d0,3,2) at socreate+0x22f sys/kern/uipc_socket.c:220 sys_socket(ffff80003c913258,ffff80003c921410,ffff80003c921360) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102 syscall(ffff80003c921410) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c921410) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcbffd14b730, count: -9 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c921020 rbx 0 rdx 0 rcx 0 rax 0xffff80003c913258 r8 0x101010101010101 r9 0x8080808080808080 r10 0xcc3be0682925ac39 r11 0x420feccdf62135d9 r12 0 r13 0 r14 0 r15 0x1 rip 0xffffffff82289575 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c921010 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=213606 pid=22713 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=83, usrpri=83, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c915260,0xffffffff8399f700 process=0xffff8000ffff4020 user=0xffff80003c91c000, vmspace=0xfffffd8074047748 estcpu=33, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 22713 62288 98264 0 2 0 syz-executor *22713 213606 98264 0 7 0x4000000 syz-executor 42166 303558 10013 0 2 0 syz-executor 42166 32061 10013 0 3 0x4000080 fsleep syz-executor 29887 181963 94417 0 2 0 syz-executor 29887 309395 94417 0 3 0x4000080 fsleep syz-executor 29887 257052 94417 0 3 0x4000080 fsleep syz-executor 84877 471833 54785 0 3 0x80 nanoslp syz-executor 84877 355855 54785 0 3 0x4000080 bell syz-executor 84877 501398 54785 0 3 0x4000080 pipewr syz-executor 84877 129358 54785 0 3 0x4000080 fsleep syz-executor 84334 512893 92418 0 3 0x80 nanoslp syz-executor 84334 293282 92418 0 3 0x4000080 netacc syz-executor 84334 438310 92418 0 3 0x4000080 fsleep syz-executor 84334 326451 92418 0 3 0x4000080 fsleep syz-executor 36634 459096 24498 0 3 0x80 nanoslp syz-executor 36634 484778 24498 0 3 0x4000080 wsevent_read syz-executor 36634 44568 24498 0 3 0x4000080 fsleep syz-executor 36634 53990 24498 0 3 0x4000080 fsleep syz-executor 19245 359889 49805 0 3 0x80 nanoslp syz-executor 19245 359325 49805 0 3 0x4000080 ttyout syz-executor 19245 305787 49805 0 3 0x4000080 fsleep syz-executor 55134 322767 36713 0 3 0x3000 suspend syz-executor 55134 385264 36713 0 2 0x4081000 syz-executor 55134 87407 36713 0 3 0x4081000 inode syz-executor 55134 118275 36713 0 3 0x4081000 inode syz-executor 56337 166371 1 0 3 0x100083 ttyin getty 94417 270848 36313 0 3 0x82 nanoslp syz-executor 16675 83972 0 0 3 0x14280 nfsidl nfsio 58293 252162 0 0 3 0x14280 nfsidl nfsio 26005 51109 0 0 3 0x14280 nfsidl nfsio 16087 412397 0 0 3 0x14280 nfsidl nfsio 14223 216107 0 0 3 0x14280 nfsidl nfsio 77629 151459 0 0 3 0x14280 nfsidl nfsio 6254 412015 0 0 3 0x14280 nfsidl nfsio 38098 355993 0 0 3 0x14280 nfsidl nfsio 90811 181412 0 0 3 0x14280 nfsidl nfsio 85544 20863 0 0 3 0x14280 nfsidl nfsio 67909 118769 0 0 3 0x14280 nfsidl nfsio 71301 463226 0 0 3 0x14280 nfsidl nfsio 11521 309643 0 0 3 0x14280 nfsidl nfsio 92711 218093 0 0 3 0x14280 nfsidl nfsio 27910 506138 0 0 3 0x14280 nfsidl nfsio 82155 172433 0 0 3 0x14280 nfsidl nfsio 78682 197865 0 0 3 0x14280 nfsidl nfsio 78265 492193 0 0 3 0x14280 nfsidl nfsio 59622 411835 0 0 3 0x14280 nfsidl nfsio 86488 427160 0 0 3 0x14280 nfsidl nfsio 49805 237526 36313 0 3 0x82 nanoslp syz-executor 54785 13613 36313 0 3 0x82 nanoslp syz-executor 92418 157282 36313 0 3 0x82 nanoslp syz-executor 98264 128278 36313 0 3 0x82 nanoslp syz-executor 36713 387716 36313 0 3 0x82 wait syz-executor 24498 84485 36313 0 3 0x82 nanoslp syz-executor 10013 299264 36313 0 3 0x82 nanoslp syz-executor 36313 3979 461 0 3 0x82 kqread syz-executor 461 420249 54924 0 3 0x10008a sigsusp ksh 54924 118408 69871 0 3 0x98 kqread sshd-session 69871 193280 23264 0 3 0x92 kqread sshd-session 23264 132713 1 0 3 0x88 kqread sshd 78200 461337 57735 73 3 0x1100090 kqread syslogd 57735 399458 1 0 3 0x100082 sbwait syslogd 790 405843 1 0 3 0x100080 kqread resolvd 45514 359095 71109 77 3 0x100092 kqread dhcpleased 17258 178453 71109 77 3 0x100092 kqread dhcpleased 71109 441266 1 0 3 0x80 kqread dhcpleased 72132 96703 0 0 3 0x14200 bored smr 5770 518367 0 0 2 0x14200 zerothread 8857 172685 0 0 3 0x14200 aiodoned aiodoned 10440 439938 0 0 3 0x14200 syncer update 78982 241810 0 0 3 0x14200 cleaner cleaner 38639 262240 0 0 3 0x14200 reaper reaper 97516 8350 0 0 3 0x14200 pgdaemon pagedaemon 30103 26148 0 0 3 0x14200 bored viomb 27974 436039 0 0 3 0x40014200 acpi0 acpi0 68597 379854 0 0 3 0x14200 bored softnet0 78515 268968 0 0 3 0x14200 bored systqmp 79901 423142 0 0 3 0x14200 bored systq 9442 466867 0 0 3 0x40014200 tmoslp softclock 54610 291633 0 0 3 0x40014200 idle0 1 412654 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 11054 12312K 12627K 166960K 13247 0 pcb 18 14K 16K 166960K 230 0 rtable 219 8K 9K 166960K 523 0 pf 31 13K 15K 166960K 93 0 ifaddr 37 6K 7K 166960K 80 0 ifgroup 43 1K 2K 166960K 118 0 sysctl 3 1K 9K 166960K 11 0 counters 32 17K 18K 166960K 67 0 ioctlops 0 0K 4K 166960K 154 0 iov 0 0K 28K 166960K 44 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1374 86K 87K 166960K 2177 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 103 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 863 0 sigio 0 0K 0K 166960K 11 0 proc 60 59K 91K 166960K 597 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 76 0 in_multi 77 5K 7K 166960K 138 0 ether_multi 1 0K 0K 166960K 10 0 mrt 2 0K 0K 166960K 23 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 442 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 248 169K 169K 166960K 9489 0 UVM aobj 97 14K 14K 166960K 103 0 pinsyscall 39 78K 93K 166960K 1974 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 55 0 NDP 10 0K 2K 166960K 53 0 temp 79 9076K 9148K 166960K 36783 0 kqueue 14 22K 30K 166960K 139 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 91 0 88 1 0 1 1 0 8 0 rtentry 136 149 0 63 4 0 4 4 0 8 0 unpcb 144 524 0 508 4 1 3 3 0 8 2 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpcb 736 302 0 295 10 3 7 7 0 8 6 arp 96 26 0 8 1 0 1 1 0 8 0 ipq 40 3 0 2 2 1 1 1 0 8 0 ipqe 40 6 0 5 2 1 1 1 0 8 0 inpcb 328 739 0 722 12 5 7 7 0 8 5 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 112 30 0 10 1 0 1 1 0 8 0 pkpcb 40 66 0 66 2 1 1 1 0 8 1 pkpcb: pool(0xffffffff83a3e160:pkpcb): page inconsistency: page 0x0; at page head addr 0xfffffd806cbd7f90 (p 0xfffffd806cbd7000) kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 26 0 26 2 1 1 1 0 8 1 pppxif 1384 4 0 4 2 1 1 1 0 8 1 pfstscr 40 2 0 2 2 1 1 1 0 8 1 pfrktable 1344 3 0 3 2 1 1 1 0 8 1 pfstitem 24 5 0 0 1 0 1 1 0 8 0 pfstkey 128 9 0 5 1 0 1 1 0 8 0 pfstate 384 5 0 2 1 0 1 1 0 8 0 pfrule 1360 5 0 5 2 1 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 577 0 213 29 4 25 29 0 8 2 art_table 40 580 0 213 5 0 5 5 0 8 0 art_node 32 147 0 70 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 2 1 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 101 0 91 1 0 1 1 0 8 0 shmpl 112 93 0 4 3 0 3 3 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2991 0 1544 92 0 92 92 0 8 0 ffsino 256 2991 0 1544 92 0 92 92 0 8 0 nchpl 144 4169 0 2472 64 0 64 64 0 8 0 rtmask 32 4 0 4 2 1 1 1 0 8 1 vnodes 216 3551 0 0 198 0 198 198 0 8 0 namei 1024 13816 0 13816 3 2 1 2 0 8 1 vcpupl 3904 7 0 2 1 0 1 1 0 8 0 vmpool 808 7 0 2 1 0 1 1 0 8 0 kstatmem 264 68 0 48 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 20339 0 20339 8 7 1 8 1 8 1 plimitpl 152 181 0 161 1 0 1 1 0 8 0 sigapl 424 1157 0 1094 9 1 8 8 0 8 0 knotepl 120 39816 0 39766 11 1 10 10 0 8 8 kqueuepl 184 262 0 251 3 2 1 3 0 8 0 pipepl 304 184 0 156 3 0 3 3 0 8 0 fdescpl 448 1124 0 1094 5 1 4 5 0 8 0 filepl 120 6530 0 6301 11 2 9 11 0 8 1 lockfpl 104 311 0 309 1 0 1 1 0 8 0 lockfspl 48 120 0 118 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 44 0 28 1 0 1 1 0 8 0 ucredpl 104 1366 0 1354 1 0 1 1 0 8 0 zombiepl 144 1370 0 1369 1 0 1 1 0 8 0 processpl 1152 1157 0 1094 5 0 5 5 0 8 0 procpl 664 2354 0 2273 8 0 8 8 0 8 1 sosppl 176 4 0 4 2 1 1 1 0 8 1 sockpl 552 1436 0 1399 12 4 8 8 0 8 4 mcl64k 65536 62 0 61 1 0 1 1 0 8 0 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 12 0 12 2 1 1 1 0 8 1 mcl4k 4096 3444 0 3390 15 7 8 15 0 8 1 mcl2k 2048 808 0 797 3 0 3 3 0 8 1 mtagpl 96 87 0 9 2 0 2 2 0 8 0 mbufpl 256 13706 0 13451 18 0 18 18 0 8 0 bufpl 280 8677 0 2459 445 0 445 445 0 8 0 anonpl 24 181653 0 176243 58 4 54 58 0 187 15 amapchunkpl 152 30801 0 30071 39 4 35 35 0 158 6 amappl16 200 3789 0 3631 22 7 15 21 0 8 6 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 424 0 423 1 0 1 1 0 8 0 amappl13 176 137 0 127 1 0 1 1 0 8 0 amappl12 168 1373 0 1343 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 59 0 49 1 0 1 1 0 8 0 amappl9 144 260 0 259 1 0 1 1 0 8 0 amappl8 136 105 0 103 1 0 1 1 0 8 0 amappl7 128 82 0 80 1 0 1 1 0 8 0 amappl6 120 259 0 249 1 0 1 1 0 8 0 amappl5 112 177 0 170 1 0 1 1 0 8 0 amappl4 104 477 0 443 2 0 2 2 0 8 0 amappl3 96 5357 0 5258 3 0 3 3 0 8 0 amappl2 88 1222 0 1157 2 0 2 2 0 8 0 amappl1 80 12506 0 11968 13 0 13 13 0 8 0 amappl 88 8663 0 8479 5 0 5 5 0 92 0 uvmvnodes 80 118 0 0 3 0 3 3 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 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 7 0 7 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 72 102 0 6 2 0 2 2 0 8 0 uaddrrnd 24 1124 0 1094 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1124 0 1094 1 0 1 1 0 8 0 vmmpekpl 168 10606 0 10571 2 0 2 2 0 8 0 vmmpepl 168 78482 0 76486 97 4 93 97 0 357 6 vmsppl 368 1123 0 1094 4 1 3 4 0 8 0 rwobjpl 40 23351 0 22139 14 0 14 14 0 8 0 pdppl 4096 2268 0 2197 104 33 71 78 0 8 0 pvpl 32 504139 0 492693 143 11 132 143 0 265 26 pmappl 216 1130 0 1096 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 392 0 57 10 0 10 10 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(ffffffff833b8dff) at panic+0x1cf sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a3e160,9,ffff80003c9211a8) at pool_do_get+0x537 sys/kern/subr_pool.c:732 pool_get(ffffffff83a3e160,9) at pool_get+0x11a sys/kern/subr_pool.c:-1 pfkeyv2_attach(ffff80000166af68,2,1) at pfkeyv2_attach+0xe9 sys/net/pfkeyv2.c:-1 socreate(1e,ffff80003c9212d0,3,2) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline] socreate(1e,ffff80003c9212d0,3,2) at socreate+0x22f sys/kern/uipc_socket.c:220 sys_socket(ffff80003c913258,ffff80003c921410,ffff80003c921360) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102 syscall(ffff80003c921410) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c921410) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcbffd14b730, 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(ffffffff833b8dff) at panic+0x1cf sys/kern/subr_prf.c:198 pool_do_get(ffffffff83a3e160,9,ffff80003c9211a8) at pool_do_get+0x537 sys/kern/subr_pool.c:732 pool_get(ffffffff83a3e160,9) at pool_get+0x11a sys/kern/subr_pool.c:-1 pfkeyv2_attach(ffff80000166af68,2,1) at pfkeyv2_attach+0xe9 sys/net/pfkeyv2.c:-1 socreate(1e,ffff80003c9212d0,3,2) at socreate+0x22f pru_attach sys/sys/protosw.h:275 [inline] socreate(1e,ffff80003c9212d0,3,2) at socreate+0x22f sys/kern/uipc_socket.c:220 sys_socket(ffff80003c913258,ffff80003c921410,ffff80003c921360) at sys_socket+0x124 sys/kern/uipc_syscalls.c:102 syscall(ffff80003c921410) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c921410) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xcbffd14b730, count: -9