panic: receive 3: so 0xfffffd805e564640, so_type 3, m 0xfffffd805ae57300, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *370763 74684 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b5d0e) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e564640,0,ffff80001d772cf8,0,0,ffff80001d772c04) at soreceive+0x16e7 soo_read(fffffd805eb0c3c0,ffff80001d772cf8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739758,6,ffff80001d772cf8,0,ffff80001d772de0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739758,ffff80001d772d90,ffff80001d772de0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d772e60) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff7c80, 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 0xfffffd805e564640, so_type 3, m 0xfffffd805ae57300, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b5d0e) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e564640,0,ffff80001d772cf8,0,0,ffff80001d772c04) at soreceive+0x16e7 soo_read(fffffd805eb0c3c0,ffff80001d772cf8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739758,6,ffff80001d772cf8,0,ffff80001d772de0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739758,ffff80001d772d90,ffff80001d772de0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d772e60) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff7c80, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d772a40 rbx 0xffff80001d772af0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d772a00 r9 0x1 r10 0x61e6904aece6c3d0 r11 0x19f25ebff9da2bef r12 0x3000000008 r13 0xffff80001d772a50 r14 0x100 r15 0x1 rip 0xffffffff815de298 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d772a30 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=370763 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d739c38,0xffff80001d73a128 process=0xffff8000ffffa010 user=0xffff80001d76d000, vmspace=0xfffffd806bc09330 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 32811 142834 75028 0 3 0x82 thrsleep syz-execprog 32811 266746 75028 0 3 0x4000082 thrsleep syz-execprog 32811 60253 75028 0 3 0x4000082 thrsleep syz-execprog 32811 201343 75028 0 3 0x4000082 thrsleep syz-execprog 32811 255741 75028 0 3 0x4000082 wait syz-execprog 32811 446056 75028 0 3 0x4000082 kqread syz-execprog 32811 6573 75028 0 3 0x4000082 thrsleep syz-execprog 32811 184718 75028 0 3 0x4000082 thrsleep syz-execprog 75028 365465 81189 0 3 0x10008a pause ksh 81189 367532 13813 0 3 0x92 select sshd 10941 168086 1 0 3 0x100083 ttyin getty 13813 238256 1 0 3 0x80 select sshd 60318 141914 95681 73 3 0x100090 kqread syslogd 95681 98376 1 0 3 0x100082 netio syslogd 35219 85088 1 77 2 0x100010 dhclient *74684 370763 1 0 7 0 dhclient 66747 364243 0 0 3 0x14200 bored smr 85727 417770 0 0 3 0x14200 pgzero zerothread 84764 179037 0 0 3 0x14200 aiodoned aiodoned 62389 403961 0 0 3 0x14200 syncer update 42996 428053 0 0 3 0x14200 cleaner cleaner 17773 138205 0 0 3 0x14200 reaper reaper 1023 379448 0 0 3 0x14200 pgdaemon pagedaemon 23945 295245 0 0 3 0x14200 bored crynlk 12320 122912 0 0 3 0x14200 bored crypto 88736 324050 0 0 3 0x40014200 acpi0 acpi0 99398 60170 0 0 2 0x14200 softnet 9519 151759 0 0 2 0x14200 systqmp 10706 495975 0 0 3 0x14200 bored systq 48714 136980 0 0 3 0x40014200 bored softclock 89285 300166 0 0 3 0x40014200 idle0 1 22571 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 9441 6321K 6321K 78643K 10540 0 pcb 13 8K 8K 78643K 13 0 rtable 61 1K 2K 78643K 155 0 ifaddr 24 7K 9K 78643K 33 0 counters 19 16K 16K 78643K 20 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1182 74K 74K 78643K 1187 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 2 4K 12K 78643K 18 0 proc 47 38K 54K 78643K 318 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 1K 78643K 22 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 19 95K 95K 78643K 19 0 exec 0 0K 1K 78643K 171 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 66 11K 11K 78643K 853 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 6 0 temp 18 3025K 3089K 78643K 1666 0 kqueue 3 4K 4K 78643K 3 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 4 0 2 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 12 1 0 1 1 0 8 0 unpcb 120 27 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 544 8 0 4 1 0 1 1 0 8 0 inpcb 280 27 0 20 1 0 1 1 0 8 0 nd6 48 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 145 0 0 10 0 10 10 0 8 0 art_table 32 146 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1414 0 20 45 0 45 45 0 8 0 ffsino 240 1414 0 20 83 0 83 83 0 8 1 nchpl 144 1639 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1423 0 0 26 0 26 26 0 8 0 vnodes 208 1423 0 0 75 0 75 75 0 8 0 namei 1024 3833 0 3833 1 0 1 1 0 8 1 scxspl 192 4358 0 4358 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 212 0 186 4 0 4 4 0 8 0 knotepl 112 39 0 30 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 16 67 0 61 1 0 1 1 0 8 0 pipepl 120 134 0 123 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 964 0 913 2 0 2 2 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 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 47 0 40 1 0 1 1 0 8 0 zombiepl 144 187 0 186 1 0 1 1 0 8 0 processpl 920 212 0 186 4 0 4 4 0 8 0 procpl 624 219 0 186 3 0 3 3 0 8 0 sockpl 400 71 0 54 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5510 0 5482 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9632 0 9556 7 0 7 7 0 8 0 bufpl 280 3650 0 161 250 0 250 250 0 8 0 anonpl 16 21023 0 19575 14 1 13 13 0 107 6 amapchunkpl 152 794 0 733 5 0 5 5 0 158 2 amappl16 192 126 0 99 2 0 2 2 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 13 0 11 2 1 1 1 0 8 0 amappl13 168 19 0 18 1 0 1 1 0 8 0 amappl12 160 6 0 6 1 0 1 1 0 8 1 amappl11 152 63 0 50 1 0 1 1 0 8 0 amappl10 144 9 0 6 1 0 1 1 0 8 0 amappl9 136 191 0 188 1 0 1 1 0 8 0 amappl8 128 235 0 229 1 0 1 1 0 8 0 amappl7 120 101 0 92 1 0 1 1 0 8 0 amappl6 112 24 0 20 1 0 1 1 0 8 0 amappl5 104 203 0 194 1 0 1 1 0 8 0 amappl4 96 444 0 416 1 0 1 1 0 8 0 amappl3 88 112 0 107 1 0 1 1 0 8 0 amappl2 80 829 0 775 3 0 3 3 0 8 1 amappl1 72 13531 0 13144 26 9 17 20 0 8 8 amappl 80 434 0 409 1 0 1 1 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 198 0 186 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 198 0 186 1 0 1 1 0 8 0 vmmpekpl 168 6031 0 6012 1 0 1 1 0 8 0 vmmpepl 168 29306 0 28471 82 6 76 76 0 357 38 vmsppl 272 197 0 186 1 0 1 1 0 8 0 pdppl 4096 402 0 372 5 0 5 5 0 8 0 pvpl 32 103872 0 100193 113 0 113 113 0 265 81 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 126 0 4 4 0 4 4 0 8 0 ddb>