panic: receive 1a: so 0xfffffd805e569320, so_type 3, m 0xfffffd8058ff1100, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *413316 84729 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b7aef) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e569320,0,ffff80001d372928,0,0,ffff80001d372834) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd805eb10708,ffff80001d372928,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d339c38,6,ffff80001d372928,0,ffff80001d372a10) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d339c38,ffff80001d3729c0,ffff80001d372a10) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d372a90) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7640, 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 0xfffffd805e569320, so_type 3, m 0xfffffd8058ff1100, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b7aef) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e569320,0,ffff80001d372928,0,0,ffff80001d372834) at soreceive+0x170a sys/kern/uipc_socket.c:977 soo_read(fffffd805eb10708,ffff80001d372928,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d339c38,6,ffff80001d372928,0,ffff80001d372a10) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d339c38,ffff80001d3729c0,ffff80001d372a10) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d372a90) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7640, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d372670 rbx 0xffff80001d372720 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d372630 r9 0x1 r10 0 r11 0x11de3d709a6db4ba r12 0x3000000008 r13 0xffff80001d372680 r14 0x100 r15 0x1 rip 0xffffffff8209c498 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d372660 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=413316 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d339758,0xffff80001d339eb8 process=0xffff8000ffffa010 user=0xffff80001d36d000, vmspace=0xfffffd806bc09660 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 7796 316029 92095 0 2 0 syz-executor.1 7796 295070 92095 0 2 0x4000000 syz-executor.1 53451 291825 67967 0 3 0x80 nanosleep syz-executor.0 53451 473564 67967 0 3 0x4000080 ttyin syz-executor.0 67967 393103 41352 0 3 0x82 nanosleep syz-executor.0 92095 181782 41352 0 3 0x82 nanosleep syz-executor.1 41352 313123 66069 0 3 0x82 thrsleep syz-fuzzer 41352 473945 66069 0 3 0x4000082 thrsleep syz-fuzzer 41352 193346 66069 0 3 0x4000082 thrsleep syz-fuzzer 41352 194152 66069 0 3 0x4000082 thrsleep syz-fuzzer 41352 441605 66069 0 3 0x4000082 thrsleep syz-fuzzer 41352 18527 66069 0 3 0x4000082 kqread syz-fuzzer 41352 108672 66069 0 3 0x4000082 thrsleep syz-fuzzer 66069 130631 45139 0 3 0x10008a pause ksh 45139 218515 46598 0 3 0x92 select sshd 79249 312848 1 0 3 0x100083 ttyin getty 46598 347539 1 0 3 0x80 select sshd 63116 446849 55981 73 3 0x100090 kqread syslogd 55981 252770 1 0 3 0x100082 netio syslogd 12839 292212 1 77 2 0x100010 dhclient *84729 413316 1 0 7 0 dhclient 88553 180299 0 0 2 0x14200 zerothread 27326 334265 0 0 3 0x14200 aiodoned aiodoned 70623 269592 0 0 3 0x14200 syncer update 16914 172892 0 0 3 0x14200 cleaner cleaner 93171 201221 0 0 3 0x14200 reaper reaper 79183 7374 0 0 3 0x14200 pgdaemon pagedaemon 13652 127366 0 0 3 0x14200 bored crynlk 65322 399755 0 0 3 0x14200 bored crypto 62663 275341 0 0 3 0x40014200 acpi0 acpi0 95185 151787 0 0 2 0x14200 softnet 27156 120469 0 0 3 0x14200 bored systqmp 99644 145911 0 0 3 0x14200 bored systq 51785 320316 0 0 3 0x40014200 bored softclock 87361 348426 0 0 3 0x40014200 idle0 45502 61989 0 0 3 0x14200 bored smr 1 95244 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 9454 6327K 6332K 78643K 10554 0 pcb 13 8K 8K 78643K 13 0 rtable 105 3K 3K 78643K 191 0 ifaddr 44 10K 10K 78643K 46 0 counters 22 16K 16K 78643K 22 0 ioctlops 0 0K 2K 78643K 15 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1224 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 1794 195K 288K 78643K 12646 0 file desc 6 17K 25K 78643K 39 0 proc 47 38K 54K 78643K 358 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 33 2K 2K 78643K 33 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 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 100 21K 21K 78643K 909 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 6 0K 0K 78643K 10 0 temp 66 3015K 3079K 78643K 1816 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 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 27 0 19 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 209 0 209 1 0 1 1 0 8 1 tcpcb 544 10 0 6 1 0 1 1 0 8 0 inpcb 280 34 0 27 1 0 1 1 0 8 0 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 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 44 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1423 0 23 46 0 46 46 0 8 0 ffsino 240 1423 0 23 83 0 83 83 0 8 0 nchpl 144 1659 0 46 60 0 60 60 0 8 0 uvmvnodes 72 1468 0 0 27 0 27 27 0 8 0 vnodes 208 1468 0 0 78 0 78 78 0 8 0 namei 1024 3958 0 3958 1 0 1 1 0 8 1 scxspl 192 4684 0 4684 1 0 1 1 0 8 1 plimitpl 152 15 0 7 1 0 1 1 0 8 0 sigapl 432 210 0 196 2 0 2 2 0 8 0 futexpl 56 152 0 152 1 0 1 1 0 8 1 knotepl 112 53 0 34 1 0 1 1 0 8 0 kqueuepl 144 4 0 2 1 0 1 1 0 8 0 pipelkpl 16 73 0 63 1 0 1 1 0 8 0 pipepl 120 146 0 127 1 0 1 1 0 8 0 fdescpl 432 211 0 196 2 0 2 2 0 8 0 filepl 120 1048 0 950 4 0 4 4 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 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 49 0 42 1 0 1 1 0 8 0 zombiepl 144 196 0 196 1 0 1 1 0 8 1 processpl 896 225 0 196 4 0 4 4 0 8 0 procpl 624 237 0 200 3 0 3 3 0 8 0 sockpl 400 80 0 63 3 0 3 3 0 8 1 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 63515 0 63464 17 3 14 14 0 8 7 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 100579 0 100472 12 2 10 10 0 8 0 bufpl 280 3967 0 161 272 0 272 272 0 8 0 anonpl 16 35507 0 20660 62 2 60 60 0 107 0 amapchunkpl 152 991 0 851 8 0 8 8 0 158 1 amappl16 192 946 0 143 41 0 41 41 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 3 0 1 2 1 1 1 0 8 0 amappl13 168 23 0 22 1 0 1 1 0 8 0 amappl12 160 5 0 3 1 0 1 1 0 8 0 amappl11 152 65 0 50 1 0 1 1 0 8 0 amappl10 144 13 0 10 1 0 1 1 0 8 0 amappl9 136 376 0 373 1 0 1 1 0 8 0 amappl8 128 265 0 252 1 0 1 1 0 8 0 amappl7 120 106 0 96 1 0 1 1 0 8 0 amappl6 112 31 0 24 1 0 1 1 0 8 0 amappl5 104 147 0 136 1 0 1 1 0 8 0 amappl4 96 436 0 407 1 0 1 1 0 8 0 amappl3 88 106 0 99 1 0 1 1 0 8 0 amappl2 80 890 0 816 3 1 2 3 0 8 0 amappl1 72 13625 0 13207 26 13 13 20 0 8 5 amappl 80 466 0 421 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 24 211 0 196 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 211 0 196 1 0 1 1 0 8 0 vmmpekpl 168 5624 0 5600 2 0 2 2 0 8 0 vmmpepl 168 32769 0 30829 150 6 144 144 0 357 59 vmsppl 272 210 0 196 2 0 2 2 0 8 1 pdppl 4096 428 0 392 6 0 6 6 0 8 1 pvpl 32 120606 0 102766 148 0 148 148 0 265 1 pmappl 200 210 0 196 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 148 0 8 4 0 4 4 0 8 0