panic: receive 1a: so 0xfffffd805e5594b0, so_type 3, m 0xfffffd8066be1e00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 673 94852 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8219d533) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e5594b0,0,ffff80001d3826a8,0,0,ffff80001d3825b4) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd80661fe690,ffff80001d3826a8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d349c38,6,ffff80001d3826a8,0,ffff80001d382790) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff80001d349c38,ffff80001d382740,ffff80001d382790) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d382810) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcd3e0, 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 0xfffffd805e5594b0, so_type 3, m 0xfffffd8066be1e00, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8219d533) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e5594b0,0,ffff80001d3826a8,0,0,ffff80001d3825b4) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd80661fe690,ffff80001d3826a8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d349c38,6,ffff80001d3826a8,0,ffff80001d382790) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff80001d349c38,ffff80001d382740,ffff80001d382790) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d382810) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcd3e0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d3823f0 rbx 0xffff80001d3824a0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d3823b0 r9 0x1 r10 0x8f943fba17f3d3b1 r11 0x1521ea27c3070b79 r12 0x3000000008 r13 0xffff80001d382400 r14 0x100 r15 0x1 rip 0xffffffff81ea7688 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d3823e0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=673 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d3499c8,0xffff80001d34a128 process=0xffff8000ffffa390 user=0xffff80001d37d000, vmspace=0xfffffd806bc0a220 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 92830 226587 58815 0 3 0x82 thrsleep syz-execprog 92830 148398 58815 0 3 0x4000082 nanosleep syz-execprog 92830 316990 58815 0 3 0x4000082 thrsleep syz-execprog 92830 495810 58815 0 3 0x4000082 thrsleep syz-execprog 92830 302712 58815 0 3 0x4000082 wait syz-execprog 92830 192654 58815 0 3 0x4000082 thrsleep syz-execprog 92830 232152 58815 0 3 0x4000082 thrsleep syz-execprog 58815 323459 14297 0 3 0x10008a pause ksh 14297 258567 94430 0 3 0x92 select sshd 10128 451830 1 0 3 0x100083 ttyin getty 94430 122264 1 0 3 0x80 select sshd 46969 474963 11253 73 3 0x100090 kqread syslogd 11253 229925 1 0 3 0x100082 netio syslogd 83175 800 1 77 2 0x100010 dhclient *94852 673 1 0 7 0 dhclient 75748 492354 0 0 3 0x14200 pgzero zerothread 85535 79979 0 0 3 0x14200 aiodoned aiodoned 63234 151868 0 0 3 0x14200 syncer update 4382 327020 0 0 3 0x14200 cleaner cleaner 17968 227818 0 0 3 0x14200 reaper reaper 55768 506885 0 0 3 0x14200 pgdaemon pagedaemon 54871 244973 0 0 3 0x14200 bored crynlk 41313 405189 0 0 3 0x14200 bored crypto 61419 5685 0 0 3 0x40014200 acpi0 acpi0 89550 258166 0 0 2 0x14200 softnet 40799 9073 0 0 2 0x14200 systqmp 84557 3244 0 0 3 0x14200 bored systq 64934 417021 0 0 3 0x40014200 bored softclock 86371 128110 0 0 3 0x40014200 idle0 43965 388471 0 0 3 0x14200 bored smr 1 116377 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 20 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 858 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 3001K 3065K 78643K 1686 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 256 168 0 0 11 0 11 11 0 8 0 art_table 32 169 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 4342 0 4342 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 896 212 0 186 4 0 4 4 0 8 0 procpl 624 218 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 5508 0 5472 8 2 6 8 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9569 0 9484 9 2 7 7 0 8 0 bufpl 280 3712 0 179 253 0 253 253 0 8 0 anonpl 16 20306 0 18841 14 1 13 13 0 107 6 amapchunkpl 152 688 0 627 5 0 5 5 0 158 1 amappl16 192 78 0 53 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 21 0 18 1 0 1 1 0 8 0 amappl12 160 7 0 4 1 0 1 1 0 8 0 amappl11 152 42 0 31 1 0 1 1 0 8 0 amappl10 144 10 0 9 1 0 1 1 0 8 0 amappl9 136 391 0 388 1 0 1 1 0 8 0 amappl8 128 85 0 75 1 0 1 1 0 8 0 amappl7 120 88 0 78 1 0 1 1 0 8 0 amappl6 112 58 0 54 1 0 1 1 0 8 0 amappl5 104 142 0 131 1 0 1 1 0 8 0 amappl4 96 426 0 403 1 0 1 1 0 8 0 amappl3 88 124 0 117 1 0 1 1 0 8 0 amappl2 80 852 0 794 3 0 3 3 0 8 1 amappl1 72 13740 0 13340 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 6050 0 6031 1 0 1 1 0 8 0 vmmpepl 168 29632 0 28758 85 7 78 78 0 357 37 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 103869 0 100134 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 112 131 0 6 4 0 4 4 0 8 0 ddb>