panic(ffffffff821b7d7c) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e566320,0,ffff80001d772908,0,0,ffff80001d772814) at soreceive+0x16e7 soo_read(fffffd80619fd780,ffff80001d772908,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739758,6,ffff80001d772908,0,ffff80001d7729f0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739758,ffff80001d7729a0,ffff80001d7729f0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d772a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc830, count: 7 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 receive 3: so 0xfffffd805e566320, so_type 3, m 0xfffffd805911b400, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b7d7c) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e566320,0,ffff80001d772908,0,0,ffff80001d772814) at soreceive+0x16e7 soo_read(fffffd80619fd780,ffff80001d772908,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739758,6,ffff80001d772908,0,ffff80001d7729f0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739758,ffff80001d7729a0,ffff80001d7729f0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d772a70) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdc830, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d772650 rbx 0xffff80001d772700 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d772610 r9 0x1 r10 0 r11 0xf0b295ee04f2812c r12 0x3000000008 r13 0xffff80001d772660 r14 0x100 r15 0x1 rip 0xffffffff816442c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d772640 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=79564 stat=onproc flags process=0 proc=0 pri=24, usrpri=53, nice=20 forw=0xffffffffffffffff, list=0xffff80001d73a868,0xffff80001d7394f8 process=0xffff8000ffffa740 user=0xffff80001d76d000, vmspace=0xfffffd806bc0a440 estcpu=3, cpticks=13, pctcpu=0.0 user=0, sys=11, intr=2 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97311 100755 11292 0 2 0 syz-executor.1 97311 117976 11292 0 2 0x4000000 syz-executor.1 11292 383486 97526 0 2 0x482 syz-executor.1 68667 451429 0 0 3 0x14200 bored sosplice 97526 149032 78042 0 3 0x82 thrsleep syz-fuzzer 97526 148462 78042 0 3 0x4000082 thrsleep syz-fuzzer 97526 199894 78042 0 3 0x4000082 kqread syz-fuzzer 97526 131536 78042 0 3 0x4000082 thrsleep syz-fuzzer 97526 289357 78042 0 3 0x4000082 thrsleep syz-fuzzer 97526 451503 78042 0 3 0x4000082 thrsleep syz-fuzzer 97526 177345 78042 0 3 0x4000082 thrsleep syz-fuzzer 97526 463298 78042 0 3 0x4000082 thrsleep syz-fuzzer 78042 381166 57423 0 3 0x10008a pause ksh 57423 285792 58050 0 3 0x92 select sshd 62 400768 1 0 3 0x100083 ttyin getty 58050 114109 1 0 3 0x80 select sshd 13983 268857 22742 73 3 0x100090 kqread syslogd 22742 73734 1 0 3 0x100082 netio syslogd 53192 151868 1 77 2 0x100010 dhclient *24040 79564 1 0 7 0 dhclient 10589 305219 0 0 3 0x14200 bored smr 95285 117708 0 0 2 0x14200 zerothread 34747 4837 0 0 3 0x14200 aiodoned aiodoned 49926 1097 0 0 3 0x14200 syncer update 17010 102580 0 0 3 0x14200 cleaner cleaner 55361 287719 0 0 3 0x14200 reaper reaper 58212 215628 0 0 3 0x14200 pgdaemon pagedaemon 87146 90498 0 0 3 0x14200 bored crynlk 80800 235199 0 0 3 0x14200 bored crypto 95460 225586 0 0 3 0x40014200 acpi0 acpi0 34344 471396 0 0 2 0x14200 softnet 36015 190974 0 0 3 0x14200 bored systqmp 49547 147375 0 0 3 0x14200 bored systq 92492 29177 0 0 2 0x40014200 softclock 81130 480656 0 0 3 0x40014200 idle0 1 282277 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 9514 6365K 7062K 78643K 13004 0 pcb 13 8K 8K 78643K 112 0 rtable 72 2K 4K 78643K 425 0 ifaddr 76 14K 15K 78643K 184 0 counters 21 16K 16K 78643K 39 0 ioctlops 0 0K 2K 78643K 56 0 iov 0 0K 24K 78643K 101 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1915 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 1K 1K 78643K 23 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 4 9K 25K 78643K 593 0 sigio 0 0K 0K 78643K 16 0 proc 52 38K 55K 78643K 460 0 subproc 16 1K 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 41 0 in_multi 59 3K 3K 78643K 126 0 ether_multi 1 0K 0K 78643K 15 0 mrt 0 0K 0K 78643K 14 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 266 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 110 143K 155K 78643K 2293 0 UVM aobj 23 2K 2K 78643K 26 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 81 0 NDP 13 0K 0K 78643K 37 0 temp 112 3036K 3113K 78643K 19654 0 kqueue 3 4K 15K 78643K 77 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 11 0 7 1 0 1 1 0 8 0 rtpcb 80 45 0 43 1 0 1 1 0 8 0 rtentry 112 73 0 47 2 0 2 2 0 8 0 unpcb 120 315 0 307 1 0 1 1 0 8 0 syncache 264 17 0 17 5 4 1 1 0 8 1 tcpqe 32 15 0 15 2 2 0 1 0 8 0 tcpcb 544 225 0 220 1 0 1 1 0 8 0 ipq 40 1 0 1 1 0 1 1 0 8 1 ipqe 40 1 0 1 1 0 1 1 0 8 1 inpcb 280 589 0 581 3 1 2 2 0 8 1 rttmr 72 6 0 6 3 2 1 1 0 8 1 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 48 10 0 7 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1128 9 0 8 2 1 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 322 0 179 13 4 9 13 0 8 0 art_table 32 324 0 179 2 0 2 2 0 8 0 art_node 16 72 0 51 1 0 1 1 0 8 0 sysvmsgpl 40 34 0 24 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 15 0 5 1 0 1 1 0 8 0 shmpl 112 24 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2247 0 855 46 0 46 46 0 8 0 ffsino 240 2247 0 855 83 0 83 83 0 8 0 nchpl 144 3465 0 1884 60 0 60 60 0 8 0 uvmvnodes 72 2883 0 0 53 0 53 53 0 8 0 vnodes 208 2883 0 0 152 0 152 152 0 8 0 namei 1024 9573 0 9573 2 1 1 1 0 8 1 vcpupl 1984 13 0 0 2 0 2 2 0 8 0 vmpool 528 18 0 5 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 0 1 1 0 8 1 scxspl 192 11285 0 11285 1 0 1 1 0 8 1 plimitpl 152 59 0 53 1 0 1 1 0 8 0 sigapl 424 779 0 751 4 0 4 4 0 8 0 futexpl 56 12758 0 12758 2 1 1 1 0 8 1 knotepl 112 162 0 149 1 0 1 1 0 8 0 kqueuepl 144 534 0 532 1 0 1 1 0 8 0 pipelkpl 16 165 0 158 1 0 1 1 0 8 0 pipepl 120 330 0 317 1 0 1 1 0 8 0 fdescpl 432 762 0 749 2 0 2 2 0 8 0 filepl 120 5377 0 5304 4 0 4 4 0 8 1 lockfpl 104 176 0 175 1 0 1 1 0 8 0 lockfspl 48 57 0 56 1 0 1 1 0 8 0 sessionpl 112 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 434 0 427 1 0 1 1 0 8 0 zombiepl 144 751 0 751 1 0 1 1 0 8 1 processpl 920 779 0 751 4 0 4 4 0 8 0 procpl 624 1499 0 1463 4 0 4 4 0 8 0 sosppl 128 6 0 6 1 1 0 1 0 8 0 sockpl 400 956 0 937 4 1 3 4 0 8 0 mcl64k 65536 57 0 57 3 2 1 1 0 8 1 mcl16k 16384 6 0 6 3 2 1 1 0 8 1 mcl12k 12288 7 0 7 2 1 1 1 0 8 1 mcl9k 9216 10 0 10 3 2 1 1 0 8 1 mcl8k 8192 10 0 10 3 2 1 1 0 8 1 mcl4k 4096 52 0 51 3 2 1 1 0 8 0 mcl2k2 2112 5 0 5 2 2 0 1 0 8 0 mcl2k 2048 63561 0 63519 13 7 6 11 0 8 0 mtagpl 80 233 0 149 4 2 2 2 0 8 0 mbufpl 256 103290 0 103028 26 8 18 21 0 8 0 bufpl 280 6218 0 834 385 0 385 385 0 8 0 anonpl 16 98652 0 88372 92 16 76 76 0 107 17 amapchunkpl 152 3750 0 3618 15 8 7 13 0 158 0 amappl16 192 4290 0 3509 62 14 48 55 0 8 8 amappl15 184 258 0 257 1 0 1 1 0 8 0 amappl14 176 6 0 5 2 1 1 1 0 8 0 amappl13 168 30 0 28 1 0 1 1 0 8 0 amappl12 160 155 0 155 2 2 0 1 0 8 0 amappl11 152 63 0 50 1 0 1 1 0 8 0 amappl10 144 157 0 150 1 0 1 1 0 8 0 amappl9 136 334 0 332 1 0 1 1 0 8 0 amappl8 128 294 0 279 1 0 1 1 0 8 0 amappl7 120 254 0 241 1 0 1 1 0 8 0 amappl6 112 22 0 18 1 0 1 1 0 8 0 amappl5 104 788 0 777 1 0 1 1 0 8 0 amappl4 96 463 0 429 2 1 1 2 0 8 0 amappl3 88 129 0 123 1 0 1 1 0 8 0 amappl2 80 5628 0 5566 3 1 2 3 0 8 0 amappl1 72 22783 0 22379 27 18 9 20 0 8 0 amappl 80 1770 0 1722 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 25 0 3 1 0 1 1 0 8 0 uaddrrnd 24 780 0 754 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 780 0 754 1 0 1 1 0 8 0 vmmpekpl 168 8283 0 8253 2 0 2 2 0 8 0 vmmpepl 168 97209 0 95417 134 34 100 122 0 357 14 vmsppl 272 779 0 754 2 0 2 2 0 8 0 pdppl 4096 1566 0 1521 7 0 7 7 0 8 0 pvpl 32 267880 0 254665 199 12 187 187 0 265 45 pmappl 200 779 0 754 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 174 0 31 5 0 5 5 0 8 0