panic: receive 1a: so 0xfffffd805e4dc4b0, so_type 3, m 0xfffffd805a6ed400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *358042 47276 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8219e079) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4dc4b0,0,ffff80001d37ecb8,0,0,ffff80001d37ebc4) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd805ebfd690,ffff80001d37ecb8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff89e8,6,ffff80001d37ecb8,0,ffff80001d37eda0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff89e8,ffff80001d37ed50,ffff80001d37eda0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37ee20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdf7f0, 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 1a: so 0xfffffd805e4dc4b0, so_type 3, m 0xfffffd805a6ed400, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8219e079) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4dc4b0,0,ffff80001d37ecb8,0,0,ffff80001d37ebc4) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd805ebfd690,ffff80001d37ecb8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff89e8,6,ffff80001d37ecb8,0,ffff80001d37eda0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff89e8,ffff80001d37ed50,ffff80001d37eda0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37ee20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdf7f0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37ea00 rbx 0xffff80001d37eab0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37e9c0 r9 0x1 r10 0xb9440fbe42064ef9 r11 0x671f45d3a44cc18c r12 0x3000000008 r13 0xffff80001d37ea10 r14 0x100 r15 0x1 rip 0xffffffff81d7eaf8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e9f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=358042 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8c60,0xffff8000ffff9650 process=0xffff8000ffff6a30 user=0xffff80001d379000, vmspace=0xfffffd806bc09660 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 23513 158677 9307 0 3 0x82 wait syz-execprog 23513 85695 9307 0 3 0x4000082 nanosleep syz-execprog 23513 419450 9307 0 3 0x4000082 thrsleep syz-execprog 23513 118093 9307 0 3 0x4000082 thrsleep syz-execprog 23513 345281 9307 0 3 0x4000082 thrsleep syz-execprog 23513 71571 9307 0 3 0x4000082 thrsleep syz-execprog 23513 500398 9307 0 3 0x4000082 thrsleep syz-execprog 9307 419304 48088 0 3 0x10008a pause ksh 48088 334950 2965 0 3 0x92 select sshd 69793 196433 1 0 3 0x100083 ttyin getty 2965 358031 1 0 3 0x80 select sshd 23296 63219 7845 73 3 0x100090 kqread syslogd 7845 481296 1 0 3 0x100082 netio syslogd 14910 427333 1 77 2 0x100010 dhclient *47276 358042 1 0 7 0 dhclient 99816 226926 0 0 3 0x14200 pgzero zerothread 61157 438202 0 0 3 0x14200 aiodoned aiodoned 57561 205432 0 0 3 0x14200 syncer update 82127 122930 0 0 3 0x14200 cleaner cleaner 48048 45649 0 0 3 0x14200 reaper reaper 58699 425833 0 0 3 0x14200 pgdaemon pagedaemon 34451 510580 0 0 3 0x14200 bored crynlk 32879 69856 0 0 3 0x14200 bored crypto 46000 200276 0 0 3 0x40014200 acpi0 acpi0 43298 340753 0 0 2 0x14200 softnet 84641 432311 0 0 2 0x14200 systqmp 64755 180320 0 0 3 0x14200 bored systq 57862 336759 0 0 3 0x40014200 bored softclock 75725 334675 0 0 3 0x40014200 idle0 54297 255326 0 0 3 0x14200 bored smr 1 233426 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 9440 6321K 6321K 78643K 10539 0 pcb 13 8K 8K 78643K 13 0 rtable 63 1K 2K 78643K 157 0 ifaddr 24 7K 9K 78643K 33 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1180 74K 74K 78643K 1185 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 74 11K 12K 78643K 866 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 2997K 3061K 78643K 3055 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 11 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 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 27 0 21 1 0 1 1 0 8 0 nd6 48 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 167 0 0 11 0 11 11 0 8 0 art_table 32 168 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 1415 0 20 46 0 46 46 0 8 1 ffsino 240 1415 0 20 83 0 83 83 0 8 0 nchpl 144 1640 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1424 0 0 26 0 26 26 0 8 0 vnodes 208 1424 0 0 75 0 75 75 0 8 0 namei 1024 3864 0 3864 1 0 1 1 0 8 1 scxspl 192 4000 0 4000 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 197 0 186 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipelkpl 16 67 0 60 1 0 1 1 0 8 0 pipepl 120 134 0 122 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 998 0 946 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 864 212 0 186 4 0 4 4 0 8 0 procpl 632 218 0 186 3 0 3 3 0 8 0 sockpl 400 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5501 0 5472 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9560 0 9480 9 2 7 7 0 8 0 bufpl 280 5847 0 1326 323 0 323 323 0 8 0 anonpl 16 20438 0 18966 14 1 13 13 0 107 6 amapchunkpl 152 778 0 717 5 0 5 5 0 158 1 amappl16 192 88 0 64 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 30 0 26 1 0 1 1 0 8 0 amappl12 160 5 0 4 1 0 1 1 0 8 0 amappl11 152 46 0 35 1 0 1 1 0 8 0 amappl10 144 9 0 7 1 0 1 1 0 8 0 amappl9 136 392 0 390 1 0 1 1 0 8 0 amappl8 128 89 0 77 1 0 1 1 0 8 0 amappl7 120 88 0 79 1 0 1 1 0 8 0 amappl6 112 55 0 50 1 0 1 1 0 8 0 amappl5 104 139 0 130 1 0 1 1 0 8 0 amappl4 96 425 0 401 1 0 1 1 0 8 0 amappl3 88 123 0 116 1 0 1 1 0 8 0 amappl2 80 849 0 793 3 0 3 3 0 8 1 amappl1 72 13560 0 13154 26 8 18 20 0 8 8 amappl 80 419 0 394 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 6038 0 6023 1 0 1 1 0 8 0 vmmpepl 168 29575 0 28701 87 9 78 78 0 357 39 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 103738 0 100007 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 6 4 0 4 4 0 8 0 ddb>