login: panic: pool_p_free: sockpl free list modified: page 0xfffffd807bcfe000; item addr 0xfffffd807bcfe799; offset 0x0=0x2e71544bd65eaa2b Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *287278 68382 0 0x14000 0x200 0 systqmp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ff5d1) at panic+0x165 sys/kern/subr_prf.c:198 pool_p_free(ffffffff82c2dc88,fffffd807bcfef90) at pool_p_free+0x1d3 pool_gc_pages(0) at pool_gc_pages+0x215 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82b5a7a0) at taskq_thread+0x9b sys/kern/kern_task.c:450 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 0xfffffd807bcfe000; item addr 0xfffffd807bcfe799; offset 0x0=0x2e71544bd65eaa2b ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827ff5d1) at panic+0x165 sys/kern/subr_prf.c:198 pool_p_free(ffffffff82c2dc88,fffffd807bcfef90) at pool_p_free+0x1d3 pool_gc_pages(0) at pool_gc_pages+0x215 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82b5a7a0) at taskq_thread+0x9b sys/kern/kern_task.c:450 end trace frame: 0x0, count: -5 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff800021602b90 rbx 0x71544bd65eaa2b4a rdx 0 rcx 0 rax 0xffff8000215e97f8 r8 0x101010101010101 r9 0x8080808080808080 r10 0xfd7a64501895b1f8 r11 0xce87fe34266eb0d6 r12 0 r13 0x2e71544bd65eaa2b r14 0 r15 0x1 rip 0xffffffff813ff5fc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800021602b80 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb> show proc PROC (systqmp) tid=287278 pid=68382 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000215e9550,0xffff8000215e9ab0 process=0xffff8000ffffebd0 user=0xffff8000215fd000, vmspace=0xffffffff82c2ecb0 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 8956 259549 31492 0 3 0x3 solock syz-executor.0 19205 422530 1 0 3 0x100083 ttyin getty 49640 162294 31492 0 3 0x3 solock syz-executor.3 97850 331112 31492 0 3 0x3 solock syz-executor.5 61487 48412 31492 0 3 0x82 piperd syz-executor.1 46211 83066 31492 0 3 0x82 piperd syz-executor.4 27768 166002 0 0 3 0x14200 acct acct 966 415422 0 0 3 0x14200 bored sosplice 60789 487192 0 0 3 0x14280 nfsidl nfsio 68445 482783 0 0 3 0x14280 nfsidl nfsio 61601 246681 0 0 3 0x14280 nfsidl nfsio 83951 336921 0 0 3 0x14280 nfsidl nfsio 40316 424228 0 0 3 0x14280 nfsidl nfsio 12320 10275 0 0 3 0x14280 nfsidl nfsio 58014 378102 0 0 3 0x14280 nfsidl nfsio 57425 98525 0 0 3 0x14280 nfsidl nfsio 43299 174667 0 0 3 0x14280 nfsidl nfsio 29790 507943 0 0 3 0x14280 nfsidl nfsio 56125 7203 0 0 3 0x14280 nfsidl nfsio 12283 498210 0 0 3 0x14280 nfsidl nfsio 28968 228816 0 0 3 0x14280 nfsidl nfsio 47373 68273 0 0 3 0x14280 nfsidl nfsio 93875 164749 0 0 3 0x14280 nfsidl nfsio 88740 338903 0 0 3 0x14280 nfsidl nfsio 88959 253619 0 0 3 0x14280 nfsidl nfsio 56805 358855 0 0 3 0x14280 nfsidl nfsio 27388 447640 0 0 3 0x14280 nfsidl nfsio 89125 175759 0 0 3 0x14280 nfsidl nfsio 86171 157498 31492 0 3 0x3 solock syz-executor.7 69983 26961 31492 0 3 0x3 solock syz-executor.2 99133 295296 31492 0 3 0x3 solock syz-executor.6 31492 112587 60357 0 3 0x2000082 wait syz-fuzzer 31492 312858 60357 0 3 0x6000082 thrsleep syz-fuzzer 31492 300814 60357 0 3 0x6000082 thrsleep syz-fuzzer 31492 264261 60357 0 3 0x6000082 thrsleep syz-fuzzer 31492 108578 60357 0 3 0x6000082 wait syz-fuzzer 31492 480925 60357 0 3 0x6000082 wait syz-fuzzer 31492 20245 60357 0 3 0x6000082 wait syz-fuzzer 31492 39189 60357 0 3 0x6000003 solock syz-fuzzer 31492 109059 60357 0 3 0x6000082 wait syz-fuzzer 31492 332573 60357 0 3 0x6000082 wait syz-fuzzer 31492 104156 60357 0 3 0x6000082 thrsleep syz-fuzzer 31492 123891 60357 0 3 0x6000082 wait syz-fuzzer 31492 515527 60357 0 3 0x6000082 wait syz-fuzzer 31492 448413 60357 0 3 0x6000003 solock syz-fuzzer 31492 173730 60357 0 3 0x6000003 solock syz-fuzzer 31492 39974 60357 0 3 0x6000003 solock syz-fuzzer 31492 398760 60357 0 3 0x6000003 solock syz-fuzzer 31492 405821 60357 0 3 0x6000003 solock syz-fuzzer 31492 489916 60357 0 3 0x6000082 kqread syz-fuzzer 60357 76036 87006 0 3 0x10008a sigsusp ksh 87006 522788 43287 0 3 0x13 solock sshd 43287 246543 1 0 3 0x88 kqread sshd 3530 150414 45767 73 3 0x1100090 kqread syslogd 45767 324453 1 0 3 0x100082 netio syslogd 92049 199965 1 0 3 0x100080 kqread resolvd 75932 200645 228 77 3 0x100092 kqread dhcpleased 2554 463692 228 77 3 0x100092 kqread dhcpleased 228 190739 1 0 3 0x80 kqread dhcpleased 35196 303458 0 0 3 0x14200 bored smr 31718 516326 0 0 3 0x14200 pgzero zerothread 29408 438833 0 0 3 0x14200 aiodoned aiodoned 41588 413908 0 0 3 0x14200 syncer update 28776 477447 0 0 3 0x14200 cleaner cleaner 43355 468909 0 0 3 0x14200 reaper reaper 31819 308372 0 0 3 0x14200 pgdaemon pagedaemon 1541 171138 0 0 3 0x14200 bored viomb 56076 343947 0 0 3 0x40014200 acpi0 acpi0 23142 391077 0 0 3 0x14200 bored softnet3 14504 129150 0 0 3 0x14200 bored softnet2 94738 33308 0 0 3 0x14200 bored softnet1 57529 243922 0 0 3 0x14200 bored softnet0 *68382 287278 0 0 7 0x14200 systqmp 44481 162458 0 0 3 0x14200 bored systq 19204 264555 0 0 3 0x40014200 bored softclock 3156 482893 0 0 3 0x40014200 idle0 1 26927 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 10175 6420K 6811K 78643K 14800 0 pcb 13 11K 12K 78643K 220 0 rtable 237 7K 7K 78643K 636 0 pf 29 8K 9K 78643K 92 0 ifaddr 43 11K 12K 78643K 91 0 ifgroup 50 2K 2K 78643K 155 0 sysctl 0 0K 1K 78643K 3 0 counters 28 17K 17K 78643K 52 0 ioctlops 0 0K 2K 78643K 71 0 iov 0 0K 18K 78643K 316 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1348 84K 85K 78643K 2987 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 32 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 273 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 10 33K 69K 78643K 2122 0 sigio 0 0K 0K 78643K 162 0 proc 56 58K 75K 78643K 711 0 subproc 104 6K 6K 78643K 182 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1323 0 in_multi 99 7K 7K 78643K 178 0 ether_multi 1 0K 0K 78643K 1 0 mrt 0 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 1K 78643K 918 0 pfkey data 0 0K 0K 78643K 1 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 288 84K 88K 78643K 21666 0 UVM aobj 131 4K 4K 78643K 133 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 75 0 NDP 11 0K 1K 78643K 63 0 temp 101 5920K 5984K 78643K 24938 0 kqueue 12 18K 31K 78643K 183 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 120 215 0 212 4 3 1 3 0 8 0 rtentry 112 181 0 71 4 0 4 4 0 8 0 unpcb 144 1998 0 1985 25 24 1 6 0 8 0 syncache 304 10 0 10 2 2 0 1 0 8 0 tcpqe 32 255 0 255 3 3 0 1 0 8 0 tcpcb 808 822 0 818 35 33 2 8 0 8 1 arp 88 31 0 13 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 336 2268 0 2261 28 26 2 7 0 8 1 nd6 104 45 0 21 1 0 1 1 0 8 0 pkpcb 40 68 0 68 1 1 0 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 ppxss 1160 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 256 736 0 278 29 0 29 29 0 8 0 art_table 32 737 0 278 4 0 4 4 0 8 0 art_node 16 180 0 80 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 1 0 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 199 0 189 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4621 0 3165 92 0 92 92 0 8 0 ffsino 240 4621 0 3165 86 0 86 86 0 8 0 nchpl 144 7464 0 5823 63 0 63 63 0 8 0 uvmvnodes 80 5606 0 0 115 0 115 115 0 8 0 vnodes 216 5606 0 0 312 0 312 312 0 8 0 namei 1024 27165 0 27165 4 4 0 3 0 8 0 vmpool 664 7 0 7 1 1 0 1 0 8 0 kstatmem 264 70 0 48 2 0 2 2 0 8 0 scxspl 216 21233 0 21233 11 10 1 8 1 8 1 plimitpl 152 459 0 444 1 0 1 1 0 8 0 sigapl 424 2470 0 2411 8 0 8 8 0 8 0 futexpl 64 24067 0 24067 1 1 0 1 0 8 0 knotepl 120 30843 0 30763 18 15 3 10 0 8 0 kqueuepl 184 286 0 278 4 3 1 4 0 8 0 pipepl 288 766 0 738 24 21 3 10 0 8 0 fdescpl 432 2392 0 2371 4 0 4 4 0 8 0 filepl 120 18310 0 18077 34 26 8 16 0 8 0 lockfpl 104 718 0 716 2 1 1 2 0 8 0 lockfspl 48 272 0 270 1 0 1 1 0 8 0 sessionpl 144 30 0 14 1 0 1 1 0 8 0 pgrppl 48 143 0 127 1 0 1 1 0 8 0 ucredpl 104 4743 0 4733 1 0 1 1 0 8 0 zombiepl 144 2411 0 2411 1 1 0 1 0 8 0 processpl 1008 2470 0 2411 10 1 9 9 0 8 0 procpl 680 5541 0 5464 10 2 8 9 0 8 0 sosppl 168 30 0 30 3 3 0 1 0 8 0 sockpl 456 4549 0 4526 106 102 4 24 0 8 1 mcl64k 65536 312 0 312 1 1 0 1 0 8 0 mcl16k 16384 170 0 170 4 4 0 1 0 8 0 mcl12k 12288 68 0 68 5 5 0 1 0 8 0 mcl9k 9216 23 0 23 6 6 0 1 0 8 0 mcl8k 8192 134 0 134 3 3 0 1 0 8 0 mcl4k 4096 332 0 332 1 1 0 1 0 8 0 mcl2k2 2112 8 0 8 5 5 0 1 0 8 0 mcl2k 2048 68360 0 68307 41 32 9 30 0 8 0 mtagpl 96 285 0 182 6 1 5 5 0 8 0 mbufpl 256 132342 0 132106 98 72 26 60 0 8 0 bufpl 288 7380 0 979 458 0 458 458 0 8 0 anonpl 24 369597 0 358840 91 3 88 91 0 188 0 amapchunkpl 152 69689 0 69010 47 14 33 39 0 158 0 amappl16 200 7993 0 7539 29 4 25 25 0 8 0 amappl15 192 14 0 14 2 2 0 1 0 8 0 amappl14 184 181 0 165 2 1 1 2 0 8 0 amappl13 176 18 0 18 1 1 0 1 0 8 0 amappl12 168 3135 0 3113 2 0 2 2 0 8 0 amappl11 160 71 0 60 1 0 1 1 0 8 0 amappl10 152 60 0 51 1 0 1 1 0 8 0 amappl9 144 312 0 310 1 0 1 1 0 8 0 amappl8 136 221 0 163 3 0 3 3 0 8 0 amappl7 128 93 0 80 1 0 1 1 0 8 0 amappl6 120 267 0 248 2 1 1 2 0 8 0 amappl5 112 323 0 315 1 0 1 1 0 8 0 amappl4 104 592 0 561 2 1 1 2 0 8 0 amappl3 96 14277 0 14226 3 0 3 3 0 8 0 amappl2 88 2672 0 2617 3 1 2 3 0 8 0 amappl1 80 17329 0 16842 22 10 12 22 0 8 0 amappl 88 21056 0 20881 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 72 132 0 2 3 0 3 3 0 8 0 uaddrrnd 24 2399 0 2378 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2399 0 2378 1 0 1 1 0 8 0 vmmpekpl 168 24553 0 24503 3 0 3 3 0 8 0 vmmpepl 168 163269 0 161335 163 60 103 119 0 357 0 vmsppl 368 2398 0 2378 3 0 3 3 0 8 0 rwobjpl 24 50217 0 43078 45 1 44 44 0 8 0 pdppl 4096 4804 0 4756 206 158 48 66 0 8 0 pvpl 32 883144 0 867400 333 172 161 333 0 265 0 pmappl 216 2398 0 2378 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1130 0 359 24 1 23 24 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(ffffffff827ff5d1) at panic+0x165 sys/kern/subr_prf.c:198 pool_p_free(ffffffff82c2dc88,fffffd807bcfef90) at pool_p_free+0x1d3 pool_gc_pages(0) at pool_gc_pages+0x215 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82b5a7a0) at taskq_thread+0x9b sys/kern/kern_task.c:450 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(ffffffff827ff5d1) at panic+0x165 sys/kern/subr_prf.c:198 pool_p_free(ffffffff82c2dc88,fffffd807bcfef90) at pool_p_free+0x1d3 pool_gc_pages(0) at pool_gc_pages+0x215 sys/kern/subr_pool.c:1583 taskq_thread(ffffffff82b5a7a0) at taskq_thread+0x9b sys/kern/kern_task.c:450 end trace frame: 0x0, count: -5