panic: receive 1a: so 0xfffffd805e4d3180, so_type 3, m 0xfffffd805c337700, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *127677 42026 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8219aa65) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4d3180,0,ffff80001d37e8d8,0,0,ffff80001d37e7e4) at soreceive+0x170a sys/kern/uipc_socket.c:966 soo_read(fffffd805eaec528,ffff80001d37e8d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8ed8,6,ffff80001d37e8d8,0,ffff80001d37e9c0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff8ed8,ffff80001d37e970,ffff80001d37e9c0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37ea40) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbb9a0, 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 0xfffffd805e4d3180, so_type 3, m 0xfffffd805c337700, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8219aa65) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4d3180,0,ffff80001d37e8d8,0,0,ffff80001d37e7e4) at soreceive+0x170a sys/kern/uipc_socket.c:966 soo_read(fffffd805eaec528,ffff80001d37e8d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8ed8,6,ffff80001d37e8d8,0,ffff80001d37e9c0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff8ed8,ffff80001d37e970,ffff80001d37e9c0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37ea40) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbb9a0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37e620 rbx 0xffff80001d37e6d0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37e5e0 r9 0x1 r10 0x2f35a404a6cd42ff r11 0x8e543513b41d3583 r12 0x3000000008 r13 0xffff80001d37e630 r14 0x100 r15 0x1 rip 0xffffffff817dfeb8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e610 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=127677 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8008,0xffff8000ffff9160 process=0xffff8000ffff7118 user=0xffff80001d379000, vmspace=0xfffffd806bc09110 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 66421 267976 9465 0 3 0x82 thrsleep syz-execprog 66421 268153 9465 0 3 0x4000082 nanosleep syz-execprog 66421 292666 9465 0 3 0x4000082 thrsleep syz-execprog 66421 287525 9465 0 3 0x4000082 thrsleep syz-execprog 66421 23736 9465 0 3 0x4000082 thrsleep syz-execprog 66421 39713 9465 0 3 0x4000082 wait syz-execprog 66421 221897 9465 0 3 0x4000082 thrsleep syz-execprog 9465 44922 61744 0 3 0x10008a pause ksh 61744 67029 39269 0 3 0x92 select sshd 86034 294846 1 0 3 0x100083 ttyin getty 39269 119354 1 0 3 0x80 select sshd 21955 120419 44097 73 3 0x100090 kqread syslogd 44097 34890 1 0 3 0x100082 netio syslogd 25634 259103 1 77 2 0x100010 dhclient *42026 127677 1 0 7 0 dhclient 39388 72873 0 0 3 0x14200 pgzero zerothread 98425 435110 0 0 3 0x14200 aiodoned aiodoned 19711 254112 0 0 3 0x14200 syncer update 85653 331689 0 0 3 0x14200 cleaner cleaner 67564 520044 0 0 3 0x14200 reaper reaper 89923 498731 0 0 3 0x14200 pgdaemon pagedaemon 51527 88657 0 0 3 0x14200 bored crynlk 46919 262902 0 0 3 0x14200 bored crypto 18539 429720 0 0 3 0x40014200 acpi0 acpi0 36005 181152 0 0 2 0x14200 softnet 5540 313819 0 0 2 0x14200 systqmp 1336 212737 0 0 3 0x14200 bored systq 95287 354592 0 0 3 0x40014200 bored softclock 58492 99248 0 0 3 0x40014200 idle0 9303 420450 0 0 3 0x14200 bored smr 1 319003 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 9440 6321K 6321K 78643K 10539 0 pcb 13 8K 8K 78643K 13 0 rtable 63 1K 2K 78643K 157 0 ifaddr 24 7K 9K 78643K 33 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1180 74K 74K 78643K 1185 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 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 73 11K 12K 78643K 861 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 21 3005K 3069K 78643K 3059 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 11 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 1 0 1 0 8 0 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 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 168 0 0 11 0 11 11 0 8 0 art_table 32 169 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 dino1pl 128 1415 0 20 46 0 46 46 0 8 1 ffsino 240 1415 0 20 83 0 83 83 0 8 0 nchpl 144 1640 0 38 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 3864 0 3864 1 0 1 1 0 8 1 scxspl 192 4005 0 4005 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 197 0 186 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 112 134 0 122 1 0 1 1 0 8 0 fdescpl 424 198 0 186 2 0 2 2 0 8 0 filepl 120 998 0 946 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 47 0 40 1 0 1 1 0 8 0 zombiepl 144 187 0 186 1 0 1 1 0 8 0 processpl 872 212 0 186 4 0 4 4 0 8 0 procpl 632 218 0 186 3 0 3 3 0 8 0 sockpl 384 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5502 0 5473 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9570 0 9490 8 1 7 7 0 8 0 bufpl 280 5847 0 1326 323 0 323 323 0 8 0 anonpl 16 20407 0 18940 14 1 13 13 0 107 6 amapchunkpl 152 681 0 620 5 0 5 5 0 158 2 amappl16 192 90 0 66 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 21 0 18 1 0 1 1 0 8 0 amappl12 160 7 0 4 1 0 1 1 0 8 0 amappl11 152 43 0 32 1 0 1 1 0 8 0 amappl10 144 9 0 9 1 0 1 1 0 8 1 amappl9 136 394 0 390 1 0 1 1 0 8 0 amappl8 128 89 0 78 1 0 1 1 0 8 0 amappl7 120 88 0 79 1 0 1 1 0 8 0 amappl6 112 57 0 51 1 0 1 1 0 8 0 amappl5 104 134 0 125 1 0 1 1 0 8 0 amappl4 96 424 0 403 1 0 1 1 0 8 0 amappl3 88 124 0 116 1 0 1 1 0 8 0 amappl2 80 852 0 793 3 0 3 3 0 8 1 amappl1 72 13695 0 13295 26 8 18 20 0 8 8 amappl 80 421 0 396 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 6048 0 6033 1 0 1 1 0 8 0 vmmpepl 168 29339 0 28470 84 6 78 78 0 357 38 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 103834 0 100109 113 0 113 113 0 265 81 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 123 0 5 4 0 4 4 0 8 0 ddb>