login: panic: receive 1a: so 0xfffffd805e55a4b0, so_type 3, m 0xfffffd805c1e5200, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 72831 56802 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821cce7b) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e55a4b0,0,ffff80001d7723b8,0,0,ffff80001d7722c4) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd80677f35a0,ffff80001d7723b8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739278,6,ffff80001d7723b8,0,ffff80001d7724a0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739278,ffff80001d772450,ffff80001d7724a0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d772520) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd40b0, 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 0xfffffd805e55a4b0, so_type 3, m 0xfffffd805c1e5200, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821cce7b) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e55a4b0,0,ffff80001d7723b8,0,0,ffff80001d7722c4) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd80677f35a0,ffff80001d7723b8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739278,6,ffff80001d7723b8,0,ffff80001d7724a0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739278,ffff80001d772450,ffff80001d7724a0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d772520) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd40b0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d772100 rbx 0xffff80001d7721b0 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff81726bbf kprintf+0x15f r9 0x1 r10 0x2 r11 0x47972a0b41f7bc6d r12 0x3000000008 r13 0xffff80001d772110 r14 0x100 r15 0x1 rip 0xffffffff82065928 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d7720f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=72831 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d739ea8,0xffff80001d7394f8 process=0xffff8000ffffaad8 user=0xffff80001d76d000, vmspace=0xfffffd806bc09660 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 34259 225791 41186 0 3 0x82 thrsleep syz-execprog 34259 126541 41186 0 3 0x4000082 thrsleep syz-execprog 34259 385888 41186 0 3 0x4000082 thrsleep syz-execprog 34259 345585 41186 0 3 0x4000082 thrsleep syz-execprog 34259 262510 41186 0 3 0x4000082 wait syz-execprog 34259 492782 41186 0 3 0x4000082 kqread syz-execprog 34259 403508 41186 0 3 0x4000082 thrsleep syz-execprog 34259 208916 41186 0 3 0x4000082 thrsleep syz-execprog 41186 373123 32524 0 3 0x10008a pause ksh 32524 508776 26924 0 3 0x92 select sshd 7186 141271 1 0 3 0x100083 ttyin getty 26924 191201 1 0 3 0x80 select sshd 57062 394101 7127 73 3 0x100090 kqread syslogd 7127 299109 1 0 3 0x100082 netio syslogd 51112 246354 1 77 2 0x100010 dhclient *56802 72831 1 0 7 0 dhclient 3437 411284 0 0 3 0x14200 bored smr 5491 382227 0 0 3 0x14200 pgzero zerothread 99937 380734 0 0 3 0x14200 aiodoned aiodoned 47671 35249 0 0 3 0x14200 syncer update 8501 346062 0 0 3 0x14200 cleaner cleaner 23783 168345 0 0 3 0x14200 reaper reaper 37442 391835 0 0 3 0x14200 pgdaemon pagedaemon 71497 381973 0 0 3 0x14200 bored crynlk 38258 249300 0 0 3 0x14200 bored crypto 87637 203656 0 0 3 0x40014200 acpi0 acpi0 24231 71792 0 0 2 0x14200 softnet 75682 440603 0 0 2 0x14200 systqmp 68033 26761 0 0 3 0x14200 bored systq 86769 410306 0 0 3 0x40014200 bored softclock 90640 219519 0 0 3 0x40014200 idle0 1 506024 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 9442 6321K 6321K 78643K 10543 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 1809 195K 288K 78643K 12938 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 835 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 1624 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 1633 0 39 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 3921 0 3921 1 0 1 1 0 8 1 scxspl 192 3705 0 3705 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 120 979 0 928 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 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 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5532 0 5493 8 2 6 8 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9641 0 9554 10 2 8 8 0 8 0 bufpl 280 2899 0 126 199 0 199 199 0 8 0 anonpl 16 20269 0 18783 14 2 12 12 0 107 4 amapchunkpl 152 810 0 750 4 0 4 4 0 158 1 amappl16 192 128 0 100 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 27 0 23 1 0 1 1 0 8 0 amappl13 168 21 0 18 1 0 1 1 0 8 0 amappl12 160 6 0 4 1 0 1 1 0 8 0 amappl11 152 44 0 35 1 0 1 1 0 8 0 amappl10 144 14 0 10 1 0 1 1 0 8 0 amappl9 136 224 0 222 1 0 1 1 0 8 0 amappl8 128 235 0 228 1 0 1 1 0 8 0 amappl7 120 103 0 91 1 0 1 1 0 8 0 amappl6 112 23 0 20 1 0 1 1 0 8 0 amappl5 104 145 0 135 1 0 1 1 0 8 0 amappl4 96 428 0 402 1 0 1 1 0 8 0 amappl3 88 107 0 102 1 0 1 1 0 8 0 amappl2 80 786 0 732 2 0 2 2 0 8 0 amappl1 72 13477 0 13091 24 7 17 17 0 8 9 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 6138 0 6117 2 0 2 2 0 8 0 vmmpepl 168 28924 0 28089 75 7 68 68 0 357 31 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 104647 0 100934 102 0 102 102 0 265 70 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 217 0 6 7 0 7 7 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(ffffffff821cce7b) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e55a4b0,0,ffff80001d7723b8,0,0,ffff80001d7722c4) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd80677f35a0,ffff80001d7723b8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739278,6,ffff80001d7723b8,0,ffff80001d7724a0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739278,ffff80001d772450,ffff80001d7724a0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d772520) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd40b0, 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(ffffffff821cce7b) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e55a4b0,0,ffff80001d7723b8,0,0,ffff80001d7722c4) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd80677f35a0,ffff80001d7723b8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d739278,6,ffff80001d7723b8,0,ffff80001d7724a0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d739278,ffff80001d772450,ffff80001d7724a0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d772520) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd40b0, count: -8 ddb>