panic: receive 1: so 0xfffffd805e563640, so_type 3, sb_cc 33 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 50574 10854 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821c07f7) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e563640,0,ffff80001d3725c8,0,0,ffff80001d3724d4) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd805eb12000,ffff80001d3725c8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d3394e8,6,ffff80001d3725c8,0,ffff80001d3726b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d3394e8,ffff80001d372660,ffff80001d3726b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d372730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3370, 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 0xfffffd805e563640, so_type 3, sb_cc 33 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821c07f7) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e563640,0,ffff80001d3725c8,0,0,ffff80001d3724d4) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd805eb12000,ffff80001d3725c8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d3394e8,6,ffff80001d3725c8,0,ffff80001d3726b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d3394e8,ffff80001d372660,ffff80001d3726b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d372730) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3370, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d372310 rbx 0xffff80001d3723c0 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d3722d0 r9 0x1 r10 0 r11 0x199a274029b44868 r12 0x3000000008 r13 0xffff80001d372320 r14 0x100 r15 0x1 rip 0xffffffff8176b428 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d372300 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=50574 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d33a118,0xffff80001d339768 process=0xffff8000ffffb190 user=0xffff80001d36d000, vmspace=0xfffffd806bc0a000 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 16446 369430 10860 0 2 0 syz-executor.0 16446 408795 10860 0 2 0x4000000 syz-executor.0 38566 189767 76727 60929 3 0x3010 suspend syz-executor.1 38566 248536 76727 60929 2 0x4081010 syz-executor.1 7248 454696 0 0 3 0x14200 bored sosplice 10860 264531 3852 0 3 0x82 nanosleep syz-executor.0 76727 90138 3852 0 3 0x82 nanosleep syz-executor.1 3852 274977 57038 0 3 0x82 thrsleep syz-fuzzer 3852 360902 57038 0 3 0x4000082 nanosleep syz-fuzzer 3852 326645 57038 0 3 0x4000082 thrsleep syz-fuzzer 3852 46971 57038 0 3 0x4000082 thrsleep syz-fuzzer 3852 83612 57038 0 3 0x4000082 thrsleep syz-fuzzer 3852 504642 57038 0 3 0x4000082 kqread syz-fuzzer 3852 377940 57038 0 3 0x4000082 thrsleep syz-fuzzer 3852 122198 57038 0 3 0x4000082 thrsleep syz-fuzzer 57038 413827 53881 0 3 0x10008a pause ksh 53881 227285 22599 0 3 0x92 select sshd 53494 324556 1 0 3 0x100083 ttyin getty 22599 425625 1 0 3 0x80 select sshd 92821 192882 20569 73 3 0x100090 kqread syslogd 20569 452080 1 0 3 0x100082 netio syslogd 56253 110621 1 77 2 0x100010 dhclient *10854 50574 1 0 7 0 dhclient 56410 145067 0 0 3 0x14200 bored smr 85478 140019 0 0 2 0x14200 zerothread 21967 270490 0 0 3 0x14200 aiodoned aiodoned 72095 398791 0 0 3 0x14200 syncer update 38597 363226 0 0 3 0x14200 cleaner cleaner 64286 347502 0 0 3 0x14200 reaper reaper 72578 209409 0 0 3 0x14200 pgdaemon pagedaemon 58230 19380 0 0 3 0x14200 bored crynlk 44049 300095 0 0 3 0x14200 bored crypto 73478 40913 0 0 3 0x40014200 acpi0 acpi0 11732 366109 0 0 3 0x14200 bored softnet 58217 482079 0 0 3 0x14200 bored systqmp 58379 331685 0 0 3 0x14200 bored systq 45455 319304 0 0 3 0x40014200 bored softclock 70036 451217 0 0 3 0x40014200 idle0 1 4191 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 9489 6527K 6721K 78643K 10839 0 pcb 13 8K 8K 78643K 39 0 rtable 108 3K 3K 78643K 340 0 ifaddr 56 12K 12K 78643K 78 0 counters 21 16K 16K 78643K 24 0 ioctlops 0 0K 2K 78643K 19 0 iov 0 0K 12K 78643K 10 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1315 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 20 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 6 17K 25K 78643K 155 0 sigio 0 0K 0K 78643K 2 0 proc 49 38K 63K 78643K 374 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 95 0 in_multi 46 2K 3K 78643K 55 0 ether_multi 1 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 203 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 105 21K 37K 78643K 1205 0 UVM aobj 8 2K 2K 78643K 10 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 12 0 NDP 8 0K 0K 78643K 15 0 temp 93 3012K 3088K 78643K 3495 0 kqueue 3 4K 9K 78643K 20 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 6 0 0 1 0 1 1 0 8 0 rtpcb 80 162 0 160 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 283 0 275 2 0 2 2 0 8 1 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 46 0 46 1 1 0 1 0 8 0 tcpcb 544 52 0 48 1 0 1 1 0 8 0 inpcb 280 298 0 291 2 0 2 2 0 8 1 nd6 48 6 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 13 1 0 1 1 0 8 0 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 8 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1598 0 195 46 0 46 46 0 8 0 ffsino 240 1598 0 195 83 0 83 83 0 8 0 nchpl 144 2004 0 389 60 0 60 60 0 8 0 uvmvnodes 72 1713 0 0 32 0 32 32 0 8 0 vnodes 208 1713 0 0 91 0 91 91 0 8 0 namei 1024 5047 0 5045 1 0 1 1 0 8 0 vmpool 528 2 0 2 1 0 1 1 0 8 1 scxspl 192 5873 0 5873 1 0 1 1 0 8 1 plimitpl 152 21 0 14 1 0 1 1 0 8 0 sigapl 424 342 0 312 4 0 4 4 0 8 0 futexpl 56 3504 0 3504 1 0 1 1 0 8 1 knotepl 112 72 0 53 1 0 1 1 0 8 0 kqueuepl 144 30 0 28 1 0 1 1 0 8 0 pipelkpl 16 92 0 82 1 0 1 1 0 8 0 pipepl 120 184 0 165 1 0 1 1 0 8 0 fdescpl 432 327 0 312 2 0 2 2 0 8 0 filepl 120 2237 0 2137 5 0 5 5 0 8 1 lockfpl 104 28 0 27 1 0 1 1 0 8 0 lockfspl 48 12 0 11 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 160 0 152 1 0 1 1 0 8 0 zombiepl 144 313 0 312 1 0 1 1 0 8 0 processpl 896 342 0 312 4 0 4 4 0 8 0 procpl 624 518 0 479 4 0 4 4 0 8 1 sosppl 128 3 0 3 1 0 1 1 0 8 1 sockpl 400 743 0 726 8 0 8 8 0 8 6 mcl64k 65536 27 0 27 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 5 0 5 1 0 1 1 0 8 1 mcl8k 8192 17 0 16 1 0 1 1 0 8 0 mcl4k 4096 24 0 24 2 1 1 1 0 8 1 mcl2k2 2112 3 0 3 1 0 1 1 0 8 1 mcl2k 2048 64200 0 64150 15 4 11 13 0 8 4 mtagpl 80 19 0 2 2 1 1 1 0 8 0 mbufpl 256 104162 0 104019 22 1 21 21 0 8 2 bufpl 280 4194 0 162 288 0 288 288 0 8 0 anonpl 16 49694 0 33803 84 2 82 82 0 107 13 amapchunkpl 152 1482 0 1331 8 0 8 8 0 158 0 amappl16 192 1825 0 897 56 1 55 56 0 8 8 amappl15 184 3 0 1 1 0 1 1 0 8 0 amappl14 176 5 0 2 2 1 1 1 0 8 0 amappl13 168 32 0 30 1 0 1 1 0 8 0 amappl12 160 4 0 4 1 1 0 1 0 8 0 amappl11 152 125 0 111 1 0 1 1 0 8 0 amappl10 144 73 0 67 1 0 1 1 0 8 0 amappl9 136 379 0 375 1 0 1 1 0 8 0 amappl8 128 281 0 259 1 0 1 1 0 8 0 amappl7 120 163 0 152 1 0 1 1 0 8 0 amappl6 112 88 0 81 1 0 1 1 0 8 0 amappl5 104 203 0 191 1 0 1 1 0 8 0 amappl4 96 496 0 470 1 0 1 1 0 8 0 amappl3 88 106 0 101 1 0 1 1 0 8 0 amappl2 80 1820 0 1747 3 1 2 3 0 8 0 amappl1 72 15323 0 14892 26 15 11 20 0 8 2 amappl 80 751 0 703 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 18 0 17 1 0 1 1 0 8 0 aobjpl 64 9 0 2 1 0 1 1 0 8 0 uaddrrnd 24 329 0 314 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 329 0 314 1 0 1 1 0 8 0 vmmpekpl 168 6236 0 6210 2 0 2 2 0 8 0 vmmpepl 168 46193 0 44098 152 6 146 147 0 357 54 vmsppl 272 328 0 314 2 1 1 2 0 8 0 pdppl 4096 664 0 628 6 1 5 6 0 8 0 pvpl 32 154003 0 135062 193 0 193 193 0 265 31 pmappl 200 328 0 314 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 165 0 10 5 0 5 5 0 8 0