panic: receive 1a: so 0xfffffd805e54f000, so_type 3, m 0xfffffd805bc12900, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *378830 99170 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8219ec4f) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e54f000,0,ffff80001d382548,0,0,ffff80001d382454) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd80663fb5a0,ffff80001d382548,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d349008,6,ffff80001d382548,0,ffff80001d382630) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236 sys_read(ffff80001d349008,ffff80001d3825e0,ffff80001d382630) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d3826b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc51c0, 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 0xfffffd805e54f000, so_type 3, m 0xfffffd805bc12900, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8219ec4f) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e54f000,0,ffff80001d382548,0,0,ffff80001d382454) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd80663fb5a0,ffff80001d382548,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d349008,6,ffff80001d382548,0,ffff80001d382630) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236 sys_read(ffff80001d349008,ffff80001d3825e0,ffff80001d382630) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d3826b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc51c0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d382290 rbx 0xffff80001d382340 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d382250 r9 0x1 r10 0 r11 0xbb916570d68600ac r12 0x3000000008 r13 0xffff80001d3822a0 r14 0x100 r15 0x1 rip 0xffffffff818ca838 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d382280 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=378830 stat=onproc flags process=0 proc=0 pri=24, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff80001d34a868,0xffff80001d349288 process=0xffff8000ffffa390 user=0xffff80001d37d000, vmspace=0xfffffd806bc09440 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 93061 215692 28473 0 2 0 syz-executor.0 93061 381580 28473 0 2 0x4000000 syz-executor.0 28473 496817 5284 0 2 0x482 syz-executor.0 36261 410476 5284 0 2 0x2 syz-executor.1 5284 432121 66173 0 3 0x82 thrsleep syz-fuzzer 5284 190604 66173 0 2 0x4000002 syz-fuzzer 5284 26932 66173 0 3 0x4000082 kqread syz-fuzzer 5284 452219 66173 0 3 0x4000082 thrsleep syz-fuzzer 5284 235823 66173 0 3 0x4000082 thrsleep syz-fuzzer 5284 156205 66173 0 3 0x4000082 thrsleep syz-fuzzer 5284 32509 66173 0 3 0x4000082 thrsleep syz-fuzzer 66173 230683 24497 0 3 0x10008a pause ksh 24497 255592 61816 0 3 0x92 select sshd 60162 79571 1 0 3 0x100083 ttyin getty 61816 516742 1 0 3 0x80 select sshd 90852 458571 5152 73 3 0x100090 kqread syslogd 5152 102437 1 0 3 0x100082 netio syslogd 45984 286784 1 77 2 0x100010 dhclient *99170 378830 1 0 7 0 dhclient 44869 49871 0 0 2 0x14200 zerothread 44237 216530 0 0 3 0x14200 aiodoned aiodoned 95282 410618 0 0 3 0x14200 syncer update 45029 229521 0 0 3 0x14200 cleaner cleaner 71082 480017 0 0 3 0x14200 reaper reaper 73250 133646 0 0 3 0x14200 pgdaemon pagedaemon 616 50895 0 0 3 0x14200 bored crynlk 90230 370123 0 0 3 0x14200 bored crypto 18321 347908 0 0 3 0x40014200 acpi0 acpi0 23187 136020 0 0 3 0x14200 bored softnet 74216 353091 0 0 3 0x14200 bored systqmp 24691 98997 0 0 3 0x14200 bored systq 25165 92974 0 0 3 0x40014200 bored softclock 83756 39726 0 0 3 0x40014200 idle0 5389 40080 0 0 3 0x14200 bored smr 1 217740 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 9456 6326K 6453K 78643K 10565 0 pcb 13 8K 8K 78643K 17 0 rtable 105 3K 3K 78643K 191 0 ifaddr 44 10K 10K 78643K 46 0 counters 21 16K 16K 78643K 21 0 ioctlops 0 0K 2K 78643K 17 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 76K 76K 78643K 1222 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 4 0K 0K 78643K 4 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 44 0 proc 48 38K 54K 78643K 359 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 2 0 in_multi 33 2K 2K 78643K 36 0 ether_multi 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 31 148K 148K 78643K 31 0 exec 0 0K 1K 78643K 181 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 99 21K 21K 78643K 956 0 UVM aobj 5 2K 2K 78643K 5 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 4 0 NDP 6 0K 0K 78643K 10 0 temp 66 3003K 3067K 78643K 1854 0 kqueue 3 4K 5K 78643K 7 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 19 0 17 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 23 0 15 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 182 0 182 1 0 1 1 0 8 1 tcpcb 544 14 0 10 1 0 1 1 0 8 0 inpcb 280 42 0 35 1 0 1 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 212 0 0 14 0 14 14 0 8 0 art_table 32 213 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 semapl 112 2 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1430 0 29 46 0 46 46 0 8 0 ffsino 240 1430 0 29 83 0 83 83 0 8 0 nchpl 144 1680 0 66 60 0 60 60 0 8 0 uvmvnodes 72 1475 0 0 27 0 27 27 0 8 0 vnodes 208 1475 0 0 78 0 78 78 0 8 0 namei 1024 4037 0 4037 1 0 1 1 0 8 1 scxspl 192 4755 0 4755 1 0 1 1 0 8 1 plimitpl 152 14 0 7 1 0 1 1 0 8 0 sigapl 432 215 0 202 2 0 2 2 0 8 0 futexpl 56 282 0 282 1 0 1 1 0 8 1 knotepl 112 55 0 36 1 0 1 1 0 8 0 kqueuepl 104 10 0 8 1 0 1 1 0 8 0 pipelkpl 16 71 0 61 1 0 1 1 0 8 0 pipepl 120 142 0 123 1 0 1 1 0 8 0 fdescpl 432 216 0 202 2 0 2 2 0 8 0 filepl 120 1106 0 1010 4 0 4 4 0 8 1 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 17 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 53 0 46 1 0 1 1 0 8 0 zombiepl 144 202 0 202 1 0 1 1 0 8 1 processpl 896 230 0 202 4 0 4 4 0 8 0 procpl 624 251 0 216 4 0 4 4 0 8 1 sockpl 400 84 0 67 3 0 3 3 0 8 1 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 59951 0 59887 18 2 16 16 0 8 5 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 95091 0 94954 13 2 11 11 0 8 0 bufpl 280 4038 0 178 276 0 276 276 0 8 0 anonpl 16 36817 0 21813 62 1 61 61 0 107 0 amapchunkpl 152 1060 0 931 8 0 8 8 0 158 1 amappl16 192 942 0 124 42 0 42 42 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 30 0 27 1 0 1 1 0 8 0 amappl13 168 8 0 6 2 1 1 1 0 8 0 amappl12 160 9 0 8 2 1 1 1 0 8 0 amappl11 152 47 0 35 1 0 1 1 0 8 0 amappl10 144 14 0 12 1 0 1 1 0 8 0 amappl9 136 569 0 565 1 0 1 1 0 8 0 amappl8 128 104 0 87 1 0 1 1 0 8 0 amappl7 120 91 0 80 1 0 1 1 0 8 0 amappl6 112 54 0 50 1 0 1 1 0 8 0 amappl5 104 142 0 132 1 0 1 1 0 8 0 amappl4 96 423 0 396 1 0 1 1 0 8 0 amappl3 88 125 0 114 1 0 1 1 0 8 0 amappl2 80 945 0 877 3 0 3 3 0 8 1 amappl1 72 13559 0 13137 27 11 16 20 0 8 7 amappl 80 494 0 454 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 216 0 202 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 216 0 202 1 0 1 1 0 8 0 vmmpekpl 168 5659 0 5635 2 0 2 2 0 8 0 vmmpepl 168 33836 0 31940 155 7 148 148 0 357 65 vmsppl 272 215 0 202 2 0 2 2 0 8 1 pdppl 4096 438 0 404 6 0 6 6 0 8 1 pvpl 32 123064 0 105107 149 0 149 149 0 265 3 pmappl 200 215 0 202 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 153 0 7 5 0 5 5 0 8 0