login: panic: receive 1a: so 0xfffffd805e568320, so_type 3, m 0xfffffd805a70fd00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *450037 11572 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821cbadb) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e568320,0,ffff80001d772288,0,0,ffff80001d772194) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd8065df3618,ffff80001d772288,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739008,6,ffff80001d772288,0,ffff80001d772370) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739008,ffff80001d772320,ffff80001d772370) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d7723f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1a20, 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 0xfffffd805e568320, so_type 3, m 0xfffffd805a70fd00, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821cbadb) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e568320,0,ffff80001d772288,0,0,ffff80001d772194) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd8065df3618,ffff80001d772288,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739008,6,ffff80001d772288,0,ffff80001d772370) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739008,ffff80001d772320,ffff80001d772370) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d7723f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1a20, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d771fd0 rbx 0xffff80001d772080 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d771f90 r9 0x1 r10 0x91ae2789d421c07c r11 0x81a3ef94a85d9028 r12 0x3000000008 r13 0xffff80001d771fe0 r14 0x100 r15 0x1 rip 0xffffffff81b70d38 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d771fc0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=450037 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d739ea8,0xffff80001d7399d8 process=0xffff8000ffffaad8 user=0xffff80001d76d000, vmspace=0xfffffd806bc09220 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 57000 302365 82783 0 3 0x82 thrsleep syz-execprog 57000 350637 82783 0 3 0x4000082 thrsleep syz-execprog 57000 238359 82783 0 3 0x4000082 thrsleep syz-execprog 57000 247889 82783 0 3 0x4000082 thrsleep syz-execprog 57000 383686 82783 0 3 0x4000082 wait syz-execprog 57000 391129 82783 0 3 0x4000082 kqread syz-execprog 57000 504757 82783 0 3 0x4000082 thrsleep syz-execprog 82783 387217 60347 0 3 0x10008a pause ksh 60347 241430 30351 0 3 0x92 select sshd 47047 498767 1 0 3 0x100083 ttyin getty 30351 134600 1 0 3 0x80 select sshd 7701 451139 70237 73 3 0x100090 kqread syslogd 70237 313308 1 0 3 0x100082 netio syslogd 2876 114461 1 77 2 0x100010 dhclient *11572 450037 1 0 7 0 dhclient 13581 149914 0 0 3 0x14200 bored smr 11177 455635 0 0 3 0x14200 pgzero zerothread 52779 397936 0 0 3 0x14200 aiodoned aiodoned 32650 150107 0 0 3 0x14200 syncer update 49809 157276 0 0 3 0x14200 cleaner cleaner 49405 236378 0 0 3 0x14200 reaper reaper 1195 169445 0 0 3 0x14200 pgdaemon pagedaemon 59414 205885 0 0 3 0x14200 bored crynlk 472 461144 0 0 3 0x14200 bored crypto 60582 22394 0 0 3 0x40014200 acpi0 acpi0 56609 215249 0 0 2 0x14200 softnet 32598 470175 0 0 2 0x14200 systqmp 11545 430901 0 0 3 0x14200 bored systq 3462 426066 0 0 3 0x40014200 bored softclock 33898 144743 0 0 3 0x40014200 idle0 1 243363 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 1808 195K 288K 78643K 12860 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 67 11K 11K 78643K 843 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 3029K 3093K 78643K 1622 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 dino2pl 256 1415 0 22 88 0 88 88 0 8 0 ffsino 240 1415 0 22 82 0 82 82 0 8 0 nchpl 144 1631 0 39 60 0 60 60 0 8 1 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 3915 0 3915 1 0 1 1 0 8 1 scxspl 192 3671 0 3671 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 47 0 38 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 16 70 0 64 1 0 1 1 0 8 0 pipepl 120 140 0 129 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 973 0 922 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 57 0 50 1 0 1 1 0 8 0 zombiepl 144 187 0 186 2 1 1 1 0 8 0 processpl 920 212 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 5501 0 5466 8 3 5 8 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9651 0 9568 10 3 7 7 0 8 0 bufpl 280 2890 0 125 198 0 198 198 0 8 0 anonpl 16 20609 0 19118 14 2 12 12 0 107 3 amapchunkpl 152 719 0 660 4 0 4 4 0 158 0 amappl16 192 127 0 103 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 28 0 23 1 0 1 1 0 8 0 amappl13 168 27 0 24 2 1 1 1 0 8 0 amappl12 160 8 0 5 1 0 1 1 0 8 0 amappl11 152 41 0 32 1 0 1 1 0 8 0 amappl10 144 15 0 9 1 0 1 1 0 8 0 amappl9 136 203 0 202 1 0 1 1 0 8 0 amappl8 128 236 0 228 1 0 1 1 0 8 0 amappl7 120 101 0 91 1 0 1 1 0 8 0 amappl6 112 21 0 19 2 1 1 1 0 8 0 amappl5 104 166 0 157 1 0 1 1 0 8 0 amappl4 96 430 0 405 1 0 1 1 0 8 0 amappl3 88 106 0 101 1 0 1 1 0 8 0 amappl2 80 805 0 753 3 1 2 2 0 8 0 amappl1 72 13950 0 13555 24 7 17 17 0 8 8 amappl 80 425 0 400 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 6132 0 6110 2 0 2 2 0 8 1 vmmpepl 168 29092 0 28258 80 12 68 68 0 357 29 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 105325 0 101626 102 0 102 102 0 265 70 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 112 217 0 8 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821cbadb) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e568320,0,ffff80001d772288,0,0,ffff80001d772194) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd8065df3618,ffff80001d772288,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739008,6,ffff80001d772288,0,ffff80001d772370) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739008,ffff80001d772320,ffff80001d772370) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d7723f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1a20, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821cbadb) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e568320,0,ffff80001d772288,0,0,ffff80001d772194) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd8065df3618,ffff80001d772288,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739008,6,ffff80001d772288,0,ffff80001d772370) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739008,ffff80001d772320,ffff80001d772370) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d7723f0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe1a20, count: -8 ddb>