panic: receive 1: so 0xfffffd8037012180, so_type 3, sb_cc 7509 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *131816 3240 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd8037012180,0,ffff800014886318,0,0,ffff800014886224) at soreceive+0x16ac sys/kern/uipc_socket.c:798 soo_read(fffffd8037562690,ffff800014886318,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8008,6,ffff800014886318,0,ffff800014886400) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff8008,ffff8000148863b0,ffff800014886400) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff800014886480) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,3,7f7ffffe43e8,3,7e66531e,1a372656d000) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe4120, 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 1: so 0xfffffd8037012180, so_type 3, sb_cc 7509 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd8037012180,0,ffff800014886318,0,0,ffff800014886224) at soreceive+0x16ac sys/kern/uipc_socket.c:798 soo_read(fffffd8037562690,ffff800014886318,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8008,6,ffff800014886318,0,ffff800014886400) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff8008,ffff8000148863b0,ffff800014886400) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff800014886480) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,3,7f7ffffe43e8,3,7e66531e,1a372656d000) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe4120, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff800014886060 rbx 0xffff800014886110 rdx 0x2 rcx 0 rax 0 r8 0xffff800014886020 r9 0x1 r10 0 r11 0xa36715e7616f3ff0 r12 0x3000000008 r13 0xffff800014886070 r14 0x100 r15 0x1 rip 0xffffffff8204e208 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800014886050 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=131816 stat=onproc flags process=0 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9150,0xffff8000ffff89f8 process=0xffff8000ffff66d0 user=0xffff800014881000, vmspace=0xfffffd803f013220 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 37380 40705 8531 0 2 0 syz-executor.0 30398 395896 80431 0 2 0 syz-executor.1 30398 315493 80431 0 2 0x4000000 syz-executor.1 80431 257665 26844 0 3 0x82 nanosleep syz-executor.1 8531 359639 26844 0 3 0x82 nanosleep syz-executor.0 54309 273083 1 0 3 0x100083 ttyin getty 87846 75630 0 0 3 0x14200 bored sosplice 26844 240611 13302 0 3 0x82 thrsleep syz-fuzzer 26844 124734 13302 0 2 0x4000482 syz-fuzzer 26844 65840 13302 0 3 0x4000082 kqread syz-fuzzer 26844 393573 13302 0 3 0x4000082 thrsleep syz-fuzzer 26844 107302 13302 0 3 0x4000082 thrsleep syz-fuzzer 26844 117609 13302 0 3 0x4000082 thrsleep syz-fuzzer 26844 443468 13302 0 3 0x4000082 thrsleep syz-fuzzer 13302 40680 3760 0 3 0x10008a pause ksh 3760 377261 15773 0 3 0x92 select sshd 15773 503159 1 0 3 0x80 select sshd 7038 255521 56127 73 3 0x100090 kqread syslogd 56127 94625 1 0 3 0x100082 netio syslogd 45435 44831 1 77 2 0x100010 dhclient * 3240 131816 1 0 7 0 dhclient 23278 87285 0 0 2 0x14200 zerothread 77903 13821 0 0 3 0x14200 aiodoned aiodoned 25413 46043 0 0 3 0x14200 syncer update 17017 96743 0 0 3 0x14200 cleaner cleaner 11336 285727 0 0 3 0x14200 reaper reaper 29728 378363 0 0 3 0x14200 pgdaemon pagedaemon 6285 449917 0 0 3 0x14200 bored crynlk 2348 449838 0 0 3 0x14200 bored crypto 91372 33324 0 0 3 0x40014200 acpi0 acpi0 16795 302842 0 0 2 0x14200 softnet 1132 258540 0 0 3 0x14200 bored systqmp 21581 291270 0 0 3 0x14200 bored systq 64143 387104 0 0 3 0x40014200 bored softclock 23537 375829 0 0 3 0x40014200 idle0 21760 67997 0 0 3 0x14200 bored smr 1 100181 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 Kern Lim devbuf 9626 6530K 7694K 78643K 31754 0 0 pcb 13 12K 14K 78643K 1565 0 0 rtable 162 16K 16K 78643K 5556 0 0 ifaddr 124 31K 33K 78643K 1517 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 826 0 0 iov 0 0K 32K 78643K 4764 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1219 77K 77K 78643K 11218 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 192 0 0 VM map 56 14K 14K 78643K 99 0 0 sem 12 0K 1K 78643K 9588 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 14240 0 0 sigio 0 0K 0K 78643K 269 0 0 proc 50 38K 63K 78643K 4933 0 0 subproc 32 2K 2K 78643K 1009 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 635 0 0 in_multi 37 2K 3K 78643K 953 0 0 ether_multi 1 0K 0K 78643K 75 0 0 mrt 1 0K 0K 78643K 37 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 144 636K 636K 78643K 144 0 0 exec 0 0K 1K 78643K 1671 0 0 pfkey data 0 0K 4K 78643K 2 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 184 382K 383K 78643K 34044 0 0 UVM aobj 130 4K 4K 78643K 130 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 1448 0 0 NDP 25 0K 1K 78643K 426 0 0 temp 262 3541K 4181K 78643K 391832 0 0 kqueue 0 0K 0K 78643K 88 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 156 0 152 1 0 1 1 0 8 0 rtpcb 80 1114 0 1112 1 0 1 1 0 8 0 rtentry 112 1074 0 1011 2 0 2 2 0 8 0 unpcb 120 7783 0 7766 8 6 2 2 0 8 1 syncache 264 37 0 37 18 18 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 216 0 216 5 5 0 1 0 8 0 tcpcb 544 5746 0 5742 27 26 1 15 0 8 0 ipq 40 78 0 78 26 26 0 1 0 8 0 ipqe 40 1448 0 1448 26 26 0 1 0 8 0 inpcb 280 14895 0 14888 57 55 2 13 0 8 1 rttmr 72 9 0 8 8 7 1 1 0 8 0 ip6q 72 9 0 9 5 5 0 1 0 8 0 ip6af 40 27 0 27 5 5 0 1 0 8 0 nd6 48 136 0 134 4 3 1 1 0 8 0 pkpcb 40 24 0 24 10 10 0 1 0 8 0 swfcl 56 4 0 0 1 0 1 1 0 8 0 ppxss 1128 123 0 122 32 31 1 1 0 8 0 art_heap8 4096 20 0 18 10 8 2 4 0 8 0 art_heap4 256 3678 0 3426 41 21 20 20 0 8 0 art_table 32 3698 0 3444 3 0 3 3 0 8 0 art_node 16 939 0 899 1 0 1 1 0 8 0 sysvmsgpl 40 394 0 391 1 0 1 1 0 8 0 semapl 112 9586 0 9576 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 23671 0 22256 46 0 46 46 0 8 0 ffsino 240 23671 0 22256 84 0 84 84 0 8 0 nchpl 144 51069 0 50574 60 39 21 60 0 8 0 uvmvnodes 72 9234 0 0 168 0 168 168 0 8 0 vnodes 208 9234 0 0 486 0 486 486 0 8 0 namei 1024 183912 0 183912 6 5 1 1 0 8 1 vcpupl 1984 54 0 0 7 0 7 7 0 8 0 vmpool 520 97 0 43 7 3 4 4 0 8 0 scsiplug 64 7 0 7 5 5 0 1 0 8 0 scxspl 192 139583 0 139583 42 41 1 7 0 8 1 plimitpl 152 648 0 641 1 0 1 1 0 8 0 sigapl 432 14242 0 14228 2 0 2 2 0 8 0 futexpl 56 416304 0 416304 7 6 1 1 0 8 1 knotepl 112 2513 0 2494 4 3 1 2 0 8 0 kqueuepl 104 3612 0 3610 4 3 1 4 0 8 0 pipepl 112 6392 0 6373 14 12 2 2 0 8 1 fdescpl 424 14243 0 14228 2 0 2 2 0 8 0 filepl 120 125142 0 125046 50 45 5 11 0 8 2 lockfpl 104 7691 0 7690 1 0 1 1 0 8 0 lockfspl 48 2110 0 2109 1 0 1 1 0 8 0 sessionpl 112 77 0 67 1 0 1 1 0 8 0 pgrppl 48 161 0 151 1 0 1 1 0 8 0 ucredpl 96 36338 0 36330 1 0 1 1 0 8 0 zombiepl 144 14238 0 14238 2 1 1 1 0 8 1 processpl 864 14268 0 14238 4 0 4 4 0 8 0 procpl 632 30288 0 30251 8 4 4 5 0 8 0 sosppl 128 132 0 132 28 28 0 1 0 8 0 sockpl 384 25353 0 25327 74 69 5 22 0 8 1 mcl64k 65536 1939 0 1939 143 142 1 33 0 8 1 mcl16k 16384 121 0 121 41 40 1 1 0 8 1 mcl12k 12288 346 0 346 25 24 1 1 0 8 1 mcl9k 9216 252 0 252 35 34 1 1 0 8 1 mcl8k 8192 2251 0 2251 15 14 1 1 0 8 1 mcl4k 4096 1519 0 1519 11 10 1 1 0 8 1 mcl2k2 2112 99 0 99 37 36 1 1 0 8 1 mcl2k 2048 95747 0 95702 28 21 7 16 0 8 0 mtagpl 80 302 0 300 11 10 1 1 0 8 0 mbufpl 256 254665 0 254473 172 139 33 37 0 8 8 bufpl 256 44214 0 34986 578 0 578 578 0 8 0 anonpl 16 1400277 0 1380296 321 224 97 97 0 62 12 amapchunkpl 152 62695 0 62563 108 100 8 19 0 158 0 amappl16 192 75594 0 74438 433 363 70 71 0 8 11 amappl15 184 1926 0 1926 9 9 0 1 0 8 0 amappl14 176 2911 0 2904 1 0 1 1 0 8 0 amappl13 168 1746 0 1745 1 0 1 1 0 8 0 amappl12 160 1572 0 1567 1 0 1 1 0 8 0 amappl11 152 3460 0 3445 1 0 1 1 0 8 0 amappl10 144 1648 0 1648 11 11 0 1 0 8 0 amappl9 136 2289 0 2286 1 0 1 1 0 8 0 amappl8 128 1824 0 1769 2 0 2 2 0 8 0 amappl7 120 1884 0 1877 1 0 1 1 0 8 0 amappl6 112 3291 0 3282 1 0 1 1 0 8 0 amappl5 104 2214 0 2204 1 0 1 1 0 8 0 amappl4 96 14506 0 14472 1 0 1 1 0 8 0 amappl3 88 3992 0 3986 1 0 1 1 0 8 0 amappl2 80 113133 0 113061 3 1 2 3 0 8 0 amappl1 72 255007 0 254607 27 18 9 20 0 8 0 amappl 80 31467 0 31406 2 0 2 2 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 129 0 0 3 0 3 3 0 8 0 uaddrrnd 24 14340 0 14228 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 14340 0 14228 1 0 1 1 0 8 0 vmmpekpl 168 85249 0 85206 3 0 3 3 0 8 0 vmmpepl 168 1683032 0 1680626 631 493 138 169 0 357 28 vmsppl 272 14242 0 14228 8 7 1 2 0 8 0 pdppl 4096 28686 0 28596 18 6 12 12 0 8 0 pvpl 32 3991004 0 3968058 785 561 224 324 0 265 33 pmappl 200 14339 0 14271 5 1 4 4 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 1187 0 441 23 1 22 22 0 8 0 ddb>