panic: pool_p_free: sockpl free list modified: page 0xfffffd8069332000; item addr 0xfffffd8069332599; offset 0x0=0x4aa83232bc0a19a6 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *273096 77920 0 0x14000 0x200 0 systqmp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ec3cb) at panic+0x165 sys/kern/subr_prf.c:198 pool_p_free(ffffffff82cc4948,fffffd8069332f90) at pool_p_free+0x1d3 pool_gc_pages(0) at pool_gc_pages+0x215 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82b97aa0) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: 10 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_p_free: sockpl free list modified: page 0xfffffd8069332000; item addr 0xfffffd8069332599; offset 0x0=0x4aa83232bc0a19a6 ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ec3cb) at panic+0x165 sys/kern/subr_prf.c:198 pool_p_free(ffffffff82cc4948,fffffd8069332f90) at pool_p_free+0x1d3 pool_gc_pages(0) at pool_gc_pages+0x215 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82b97aa0) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -5 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000215fff60 rbx 0xa83232bc0a19a632 rdx 0 rcx 0 rax 0xffff8000ffffe2b8 r8 0x101010101010101 r9 0x8080808080808080 r10 0xedbd4d99d5a43e2d r11 0xd6c31c371f2055f0 r12 0 r13 0x4aa83232bc0a19a6 r14 0 r15 0x1 rip 0xffffffff8108b91c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000215fff50 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb> show proc PROC (systqmp) pid=273096 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffffeae0,0xffff8000ffffe010 process=0xffff8000ffffc3f0 user=0xffff8000215fb000, vmspace=0xffffffff82c36778 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 13434 118173 72470 0 3 0x82 piperd syz-executor.2 2030 267909 72470 0 3 0x3 kernel: protection fault trap, code=0 Faulted in DDB; continuing... ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10176 6416K 6679K 78643K 12181 0 pcb 13 12K 14K 78643K 63 0 rtable 208 10K 11K 78643K 518 0 ifaddr 71 20K 22K 78643K 186 0 ifgroup 54 2K 2K 78643K 141 0 sysctl 2 0K 0K 78643K 2 0 counters 28 17K 17K 78643K 64 0 ioctlops 0 0K 2K 78643K 166 0 iov 0 0K 16K 78643K 107 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1409 88K 88K 78643K 1832 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 142 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 10 33K 69K 78643K 852 0 sigio 0 0K 0K 78643K 3 0 proc 63 59K 67K 78643K 580 0 subproc 104 6K 6K 78643K 130 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 991 0 in_multi 80 6K 7K 78643K 180 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 419 0 pfkey data 0 0K 0K 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 8 62K 64K 78643K 10 0 UVM amap 281 83K 89K 78643K 9882 0 UVM aobj 24 2K 2K 78643K 27 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 14 0 NDP 12 0K 1K 78643K 58 0 temp 78 5854K 5919K 78643K 19943 0 kqueue 12 18K 26K 78643K 80 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 93 0 90 2 1 1 2 0 8 0 rtentry 112 175 0 81 4 0 4 4 0 8 0 unpcb 144 1021 0 1008 16 15 1 6 0 8 0 syncache 296 7 0 7 2 2 0 1 0 8 0 tcpqe 32 489 0 489 2 2 0 1 0 8 0 tcpcb 776 629 0 625 16 15 1 8 0 8 0 arp 88 22 0 6 1 0 1 1 0 8 0 ipq 40 4 0 4 1 1 0 1 0 8 0 ipqe 40 8 0 8 1 1 0 1 0 8 0 inpcb 336 1086 0 1079 19 18 1 10 0 8 0 nd6 104 34 0 17 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1160 20 0 20 2 2 0 1 0 8 0 pppxif 1360 14 0 14 1 1 0 1 0 8 0 pfanchor 1288 21 0 21 1 1 0 1 0 8 0 pfstkey 128 3 0 3 1 1 0 1 0 8 0 pfstate 352 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 778 0 398 30 3 27 30 0 8 0 art_table 32 779 0 398 4 0 4 4 0 8 0 art_node 16 171 0 85 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 140 0 130 1 0 1 1 0 8 0 shmpl 112 24 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2495 0 1054 91 0 91 91 0 8 0 ffsino 240 2495 0 1054 86 0 86 86 0 8 0 nchpl 144 3782 0 2144 63 0 63 63 0 8 0 uvmvnodes 80 3019 0 0 62 0 62 62 0 8 0 vnodes 216 3019 0 0 168 0 168 168 0 8 0 namei 1024 14966 0 14966 2 2 0 2 0 8 0 kstatmem 264 68 0 44 2 0 2 2 0 8 0 scxspl 216 12507 0 12507 11 10 1 8 0 8 1 plimitpl 152 68 0 53 1 0 1 1 0 8 0 sigapl 424 1169 0 1111 8 0 8 8 0 8 0 futexpl 64 8038 0 8038 1 1 0 1 0 8 0 knotepl 120 11662 0 11581 13 10 3 9 0 8 0 kqueuepl 184 160 0 152 3 2 1 3 0 8 0 pipepl 288 273 0 245 8 5 3 5 0 8 0 fdescpl 432 1132 0 1111 4 1 3 4 0 8 0 filepl 120 7905 0 7671 28 20 8 19 0 8 0 lockfpl 104 175 0 173 1 0 1 1 0 8 0 lockfspl 48 52 0 50 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 102 0 86 1 0 1 1 0 8 0 ucredpl 104 799 0 789 1 0 1 1 0 8 0 zombiepl 144 1111 0 1111 1 1 0 1 0 8 0 processpl 1008 1169 0 1111 10 1 9 9 0 8 0 procpl 696 2298 0 2224 12 4 8 10 0 8 0 sosppl 168 9 0 9 2 2 0 1 0 8 0 sockpl 456 2204 0 2181 53 50 3 20 0 8 0 mcl64k 65536 22 0 22 2 2 0 1 0 8 0 mcl16k 16384 13 0 13 3 3 0 1 0 8 0 mcl12k 12288 40 0 40 3 3 0 1 0 8 0 mcl9k 9216 11 0 11 1 1 0 1 0 8 0 mcl8k 8192 49 0 49 3 3 0 1 0 8 0 mcl4k 4096 81 0 81 3 3 0 1 0 8 0 mcl2k2 2112 7 0 7 3 3 0 1 0 8 0 mcl2k 2048 70374 0 70322 46 38 8 30 0 8 0 mtagpl 96 47 0 28 2 1 1 1 0 8 0 mbufpl 256 118777 0 118587 72 57 15 60 0 8 0 bufpl 288 5707 0 205 393 0 393 393 0 8 0 anonpl 24 249966 0 235246 98 4 94 98 0 188 0 amapchunkpl 152 32368 0 31587 48 10 38 42 0 158 1 amappl16 200 6155 0 5735 24 1 23 23 0 8 0 amappl15 192 18 0 17 1 0 1 1 0 8 0 amappl14 184 154 0 142 2 1 1 2 0 8 0 amappl13 176 17 0 15 1 0 1 1 0 8 0 amappl12 168 1789 0 1768 2 0 2 2 0 8 0 amappl11 160 53 0 42 1 0 1 1 0 8 0 amappl10 152 27 0 17 2 1 1 1 0 8 0 amappl9 144 154 0 153 3 2 1 2 0 8 0 amappl8 136 194 0 137 2 0 2 2 0 8 0 amappl7 128 51 0 41 1 0 1 1 0 8 0 amappl6 120 256 0 239 2 1 1 2 0 8 0 amappl5 112 156 0 150 1 0 1 1 0 8 0 amappl4 104 627 0 597 2 1 1 2 0 8 0 amappl3 96 6658 0 6607 3 0 3 3 0 8 0 amappl2 88 1413 0 1358 4 2 2 3 0 8 0 amappl1 80 12532 0 12050 22 10 12 22 0 8 0 amappl 88 9345 0 9169 6 0 6 6 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 26 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1132 0 1111 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1132 0 1111 1 0 1 1 0 8 0 vmmpekpl 168 14113 0 14069 3 0 3 3 0 8 0 vmmpepl 168 89223 0 87329 148 48 100 128 0 357 0 vmsppl 368 1131 0 1111 3 0 3 3 0 8 0 rwobjpl 24 31055 0 26652 28 1 27 27 0 8 0 pdppl 4096 2270 0 2222 136 77 59 66 0 8 11 pvpl 32 572977 0 553503 359 94 265 359 0 265 96 pmappl 216 1131 0 1111 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 905 0 214 21 0 21 21 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ec3cb) at panic+0x165 sys/kern/subr_prf.c:198 pool_p_free(ffffffff82cc4948,fffffd8069332f90) at pool_p_free+0x1d3 pool_gc_pages(0) at pool_gc_pages+0x215 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82b97aa0) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ec3cb) at panic+0x165 sys/kern/subr_prf.c:198 pool_p_free(ffffffff82cc4948,fffffd8069332f90) at pool_p_free+0x1d3 pool_gc_pages(0) at pool_gc_pages+0x215 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82b97aa0) at taskq_thread+0x9b sys/kern/kern_task.c:449 end trace frame: 0x0, count: -5