login: panic: receive 3: so 0xfffffd805e588320, so_type 3, m 0xfffffd805e258100, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *366690 23034 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b49e4) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e588320,0,ffff80001d372168,0,0,ffff80001d372074) at soreceive+0x16e7 soo_read(fffffd805eb127f8,ffff80001d372168,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d339758,6,ffff80001d372168,0,ffff80001d372250) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d339758,ffff80001d372200,ffff80001d372250) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d3722d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0010, 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 0xfffffd805e588320, so_type 3, m 0xfffffd805e258100, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b49e4) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e588320,0,ffff80001d372168,0,0,ffff80001d372074) at soreceive+0x16e7 soo_read(fffffd805eb127f8,ffff80001d372168,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d339758,6,ffff80001d372168,0,ffff80001d372250) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d339758,ffff80001d372200,ffff80001d372250) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d3722d0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0010, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d371eb0 rbx 0xffff80001d371f60 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d371e70 r9 0x1 r10 0xf8d43af5966bf488 r11 0xcd43794f159ac020 r12 0x3000000008 r13 0xffff80001d371ec0 r14 0x100 r15 0x1 rip 0xffffffff818904b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d371ea0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=366690 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d33a118,0xffff80001d3399d8 process=0xffff8000ffffa390 user=0xffff80001d36d000, vmspace=0xfffffd806bc0a110 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 14778 127142 74527 0 3 0x82 thrsleep syz-execprog 14778 299004 74527 0 3 0x4000082 thrsleep syz-execprog 14778 402205 74527 0 3 0x4000082 thrsleep syz-execprog 14778 455807 74527 0 3 0x4000082 thrsleep syz-execprog 14778 227878 74527 0 3 0x4000082 wait syz-execprog 14778 130365 74527 0 3 0x4000082 kqread syz-execprog 14778 307521 74527 0 3 0x4000082 thrsleep syz-execprog 74527 510794 7562 0 3 0x10008a pause ksh 7562 397480 72205 0 3 0x92 select sshd 56333 515042 1 0 3 0x100083 ttyin getty 72205 107237 1 0 3 0x80 select sshd 85106 217514 82578 73 3 0x100090 kqread syslogd 82578 432247 1 0 3 0x100082 netio syslogd 14220 44102 1 77 2 0x100010 dhclient *23034 366690 1 0 7 0 dhclient 20487 407765 0 0 3 0x14200 bored smr 94469 129104 0 0 3 0x14200 pgzero zerothread 301 184417 0 0 3 0x14200 aiodoned aiodoned 63896 12584 0 0 3 0x14200 syncer update 76993 226341 0 0 3 0x14200 cleaner cleaner 34513 226917 0 0 3 0x14200 reaper reaper 44692 117089 0 0 3 0x14200 pgdaemon pagedaemon 21973 143504 0 0 3 0x14200 bored crynlk 20905 180748 0 0 3 0x14200 bored crypto 47217 11172 0 0 3 0x40014200 acpi0 acpi0 15345 344726 0 0 2 0x14200 softnet 28400 33512 0 0 2 0x14200 systqmp 41362 195506 0 0 3 0x14200 bored systq 5417 189941 0 0 3 0x40014200 bored softclock 45165 503063 0 0 3 0x40014200 idle0 1 220181 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 68 11K 12K 78643K 844 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 3005K 3069K 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 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 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 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 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 4360 0 4360 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 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 5511 0 5480 7 2 5 7 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9561 0 9480 8 1 7 7 0 8 0 bufpl 280 3647 0 160 250 0 250 250 0 8 0 anonpl 16 20287 0 18847 15 2 13 13 0 107 7 amapchunkpl 152 671 0 610 5 0 5 5 0 158 2 amappl16 192 120 0 95 2 0 2 2 0 8 0 amappl15 184 2 0 1 2 1 1 1 0 8 0 amappl14 176 3 0 1 2 1 1 1 0 8 0 amappl13 168 20 0 18 1 0 1 1 0 8 0 amappl12 160 9 0 6 1 0 1 1 0 8 0 amappl11 152 66 0 54 1 0 1 1 0 8 0 amappl10 144 19 0 15 1 0 1 1 0 8 0 amappl9 136 218 0 216 1 0 1 1 0 8 0 amappl8 128 231 0 224 1 0 1 1 0 8 0 amappl7 120 102 0 92 1 0 1 1 0 8 0 amappl6 112 21 0 18 1 0 1 1 0 8 0 amappl5 104 142 0 133 1 0 1 1 0 8 0 amappl4 96 448 0 423 1 0 1 1 0 8 0 amappl3 88 112 0 107 1 0 1 1 0 8 0 amappl2 80 839 0 783 3 0 3 3 0 8 1 amappl1 72 13519 0 13137 26 9 17 20 0 8 8 amappl 80 420 0 395 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 6032 0 6012 1 0 1 1 0 8 0 vmmpepl 168 29014 0 28183 81 5 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 103081 0 99411 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 112 127 0 5 4 0 4 4 0 8 0 ddb>