panic: receive 1: so 0xfffffd805e4fb4b0, so_type 3, sb_cc 4716 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 97885 72394 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823b5f0a) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4fb4b0,0,ffff80001d6e1f08,0,0,ffff80001d6e1e14) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd80641f99d8,ffff80001d6e1f08,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9758,6,ffff80001d6e1f08,0,ffff80001d6e1ff0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9758,ffff80001d6e1fa0,ffff80001d6e1ff0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e2070) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd51f0, 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 0xfffffd805e4fb4b0, so_type 3, sb_cc 4716 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823b5f0a) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4fb4b0,0,ffff80001d6e1f08,0,0,ffff80001d6e1e14) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd80641f99d8,ffff80001d6e1f08,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9758,6,ffff80001d6e1f08,0,ffff80001d6e1ff0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9758,ffff80001d6e1fa0,ffff80001d6e1ff0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e2070) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd51f0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d6e1c50 rbx 0xffff80001d6e1d00 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff811a085f kprintf+0x15f r9 0x1 r10 0x2 r11 0xeaab9ba5ebd8c2f6 r12 0x3000000008 r13 0xffff80001d6e1c60 r14 0x100 r15 0x1 rip 0xffffffff8225b8b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d6e1c40 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=97885 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a9c38,0xffff80001d6aa128 process=0xffff8000ffffa010 user=0xffff80001d6dd000, vmspace=0xfffffd806bc0a660 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 69995 500039 47207 0 2 0 syz-executor.0 69995 485254 47207 0 2 0x4000000 syz-executor.0 47207 91739 36638 0 3 0x82 nanosleep syz-executor.0 10936 334919 0 0 3 0x14200 bored sosplice 77962 50461 0 0 3 0x14280 nfsidl nfsio 87712 32363 0 0 3 0x14280 nfsidl nfsio 64669 61601 0 0 3 0x14280 nfsidl nfsio 89976 63562 0 0 3 0x14280 nfsidl nfsio 61619 352310 0 0 3 0x14280 nfsidl nfsio 94753 421818 0 0 3 0x14280 nfsidl nfsio 76957 355159 0 0 3 0x14280 nfsidl nfsio 67454 36074 0 0 3 0x14280 nfsidl nfsio 76242 518906 0 0 3 0x14280 nfsidl nfsio 63135 45928 0 0 3 0x14280 nfsidl nfsio 39138 314371 0 0 3 0x14280 nfsidl nfsio 42563 191866 0 0 3 0x14280 nfsidl nfsio 11282 57445 0 0 3 0x14280 nfsidl nfsio 5549 307517 0 0 3 0x14280 nfsidl nfsio 54346 201972 0 0 3 0x14280 nfsidl nfsio 95498 45769 0 0 3 0x14280 nfsidl nfsio 4674 182905 0 0 3 0x14280 nfsidl nfsio 53125 484352 0 0 3 0x14280 nfsidl nfsio 85343 130211 0 0 3 0x14280 nfsidl nfsio 95240 258963 0 0 3 0x14280 nfsidl nfsio 16807 67135 36638 0 3 0x82 nanosleep syz-executor.1 36638 363799 19557 0 3 0x82 thrsleep syz-fuzzer 36638 259368 19557 0 3 0x4000082 nanosleep syz-fuzzer 36638 365045 19557 0 3 0x4000082 kqread syz-fuzzer 36638 272438 19557 0 3 0x4000082 thrsleep syz-fuzzer 36638 185050 19557 0 3 0x4000082 thrsleep syz-fuzzer 36638 1680 19557 0 3 0x4000082 thrsleep syz-fuzzer 36638 120616 19557 0 3 0x4000082 thrsleep syz-fuzzer 36638 17642 19557 0 3 0x4000082 thrsleep syz-fuzzer 19557 330589 58618 0 3 0x10008a pause ksh 58618 512256 68135 0 3 0x92 select sshd 59718 286109 1 0 3 0x100083 ttyin getty 68135 368539 1 0 3 0x80 select sshd 5886 330691 29942 73 3 0x100090 kqread syslogd 29942 383396 1 0 3 0x100082 netio syslogd 72636 403384 1 77 2 0x100010 dhclient *72394 97885 1 0 7 0 dhclient 59688 512825 0 0 3 0x14200 bored smr 9682 257032 0 0 2 0x14200 zerothread 44061 326324 0 0 3 0x14200 aiodoned aiodoned 74097 138961 0 0 3 0x14200 syncer update 67387 132961 0 0 3 0x14200 cleaner cleaner 51418 186636 0 0 3 0x14200 reaper reaper 57718 179262 0 0 3 0x14200 pgdaemon pagedaemon 89953 481063 0 0 3 0x14200 bored crynlk 95790 483361 0 0 3 0x14200 bored crypto 84161 512996 0 0 3 0x40014200 acpi0 acpi0 12395 127351 0 0 3 0x14200 bored softnet 75128 30538 0 0 2 0x14200 systqmp 19908 357646 0 0 3 0x14200 bored systq 15593 195671 0 0 3 0x40014200 bored softclock 98628 401778 0 0 3 0x40014200 idle0 1 290069 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 9502 6421K 6734K 78643K 11243 0 pcb 13 8K 8K 78643K 123 0 rtable 91 4K 8K 78643K 566 0 ifaddr 63 13K 15K 78643K 155 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 26 0 ioctlops 0 0K 4K 78643K 73 0 iov 0 0K 32K 78643K 70 0 mount 1 1K 1K 78643K 1 0 vnodes 1231 77K 78K 78643K 1501 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 0K 0K 78643K 2 0 sem 9 1K 1K 78643K 13 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 549 0 sigio 0 0K 0K 78643K 4 0 proc 49 38K 63K 78643K 469 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 60 0 in_multi 42 2K 2K 78643K 151 0 ether_multi 1 0K 0K 78643K 28 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 1K 78643K 255 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 142 88K 88K 78643K 2167 0 UVM aobj 22 2K 2K 78643K 24 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 119 0 NDP 10 0K 0K 78643K 24 0 temp 102 3850K 3914K 78643K 15715 0 kqueue 3 4K 18K 78643K 44 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 13 0 7 1 0 1 1 0 8 0 rtpcb 80 55 0 53 1 0 1 1 0 8 0 rtentry 112 85 0 52 2 0 2 2 0 8 0 unpcb 120 242 0 234 1 0 1 1 0 8 0 syncache 264 10 0 10 3 3 0 1 0 8 0 tcpqe 32 68 0 68 1 1 0 1 0 8 0 tcpcb 544 279 0 275 1 0 1 1 0 8 0 ipq 40 4 0 4 1 1 0 1 0 8 0 ipqe 40 14 0 14 1 1 0 1 0 8 0 inpcb 280 688 0 680 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 13 0 9 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 pfrktable 1344 85 0 83 1 0 1 1 0 8 0 pftag 88 12 0 12 2 1 1 1 0 8 1 pfrule 1360 14 0 13 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 322 0 175 15 4 11 12 0 8 1 art_table 32 323 0 175 2 0 2 2 0 8 0 art_node 16 82 0 50 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 16 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2104 0 714 88 0 88 88 0 8 0 ffsino 240 2104 0 714 83 0 83 83 0 8 0 nchpl 144 3022 0 1437 60 0 60 60 0 8 0 uvmvnodes 72 2365 0 0 43 0 43 43 0 8 0 vnodes 208 2365 0 0 125 0 125 125 0 8 0 namei 1024 8195 0 8195 2 1 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 8 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 26 0 25 1 0 1 1 0 8 0 scxspl 192 9194 0 9194 1 0 1 1 0 8 1 plimitpl 152 56 0 49 1 0 1 1 0 8 0 sigapl 424 750 0 701 6 0 6 6 0 8 0 futexpl 56 11951 0 11951 2 1 1 1 0 8 1 knotepl 112 144 0 125 1 0 1 1 0 8 0 kqueuepl 144 854 0 848 1 0 1 1 0 8 0 pipelkpl 16 152 0 142 1 0 1 1 0 8 0 pipepl 120 304 0 285 1 0 1 1 0 8 0 fdescpl 432 715 0 701 2 0 2 2 0 8 0 filepl 120 4601 0 4505 4 0 4 4 0 8 1 lockfpl 104 101 0 100 1 0 1 1 0 8 0 lockfspl 48 36 0 35 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 25 0 15 1 0 1 1 0 8 0 ucredpl 96 371 0 364 1 0 1 1 0 8 0 zombiepl 144 701 0 700 1 0 1 1 0 8 0 processpl 920 750 0 700 7 0 7 7 0 8 0 procpl 624 1374 0 1316 6 1 5 5 0 8 0 sosppl 128 12 0 12 1 1 0 1 0 8 0 sockpl 400 998 0 980 4 1 3 3 0 8 1 mcl64k 65536 33 0 33 1 0 1 1 0 8 1 mcl16k 16384 6 0 6 2 1 1 1 0 8 1 mcl12k 12288 14 0 14 2 1 1 1 0 8 1 mcl9k 9216 10 0 10 2 1 1 1 0 8 1 mcl8k 8192 11 0 11 3 2 1 1 0 8 1 mcl4k 4096 60 0 60 3 2 1 1 0 8 1 mcl2k2 2112 3 0 3 1 0 1 1 0 8 1 mcl2k 2048 73235 0 73182 18 10 8 14 0 8 0 mtagpl 80 59 0 16 2 1 1 1 0 8 0 mbufpl 256 120577 0 120316 41 21 20 31 0 8 0 bufpl 280 4486 0 132 311 0 311 311 0 8 0 anonpl 16 79252 0 63769 70 3 67 68 0 107 0 amapchunkpl 152 3593 0 3451 16 9 7 13 0 158 1 amappl16 192 3276 0 2379 48 1 47 47 0 8 2 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 41 0 38 1 0 1 1 0 8 0 amappl12 160 66 0 59 1 0 1 1 0 8 0 amappl11 152 56 0 45 1 0 1 1 0 8 0 amappl10 144 442 0 438 1 0 1 1 0 8 0 amappl9 136 365 0 364 1 0 1 1 0 8 0 amappl8 128 380 0 336 2 0 2 2 0 8 0 amappl7 120 312 0 299 1 0 1 1 0 8 0 amappl6 112 29 0 22 1 0 1 1 0 8 0 amappl5 104 710 0 698 1 0 1 1 0 8 0 amappl4 96 455 0 429 1 0 1 1 0 8 0 amappl3 88 132 0 127 1 0 1 1 0 8 0 amappl2 80 4767 0 4701 2 0 2 2 0 8 0 amappl1 72 22560 0 22140 22 12 10 17 0 8 0 amappl 80 1616 0 1569 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 23 0 2 1 0 1 1 0 8 0 uaddrrnd 24 723 0 703 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 723 0 703 1 0 1 1 0 8 0 vmmpekpl 168 8395 0 8361 2 0 2 2 0 8 0 vmmpepl 168 92690 0 90693 145 23 122 122 0 357 33 vmsppl 272 722 0 703 3 1 2 2 0 8 0 pdppl 4096 1452 0 1412 7 1 6 6 0 8 0 pvpl 32 245883 0 227322 168 8 160 165 0 265 2 pmappl 200 722 0 703 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 284 0 47 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823b5f0a) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4fb4b0,0,ffff80001d6e1f08,0,0,ffff80001d6e1e14) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd80641f99d8,ffff80001d6e1f08,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9758,6,ffff80001d6e1f08,0,ffff80001d6e1ff0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9758,ffff80001d6e1fa0,ffff80001d6e1ff0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e2070) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd51f0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823b5f0a) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4fb4b0,0,ffff80001d6e1f08,0,0,ffff80001d6e1e14) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd80641f99d8,ffff80001d6e1f08,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9758,6,ffff80001d6e1f08,0,ffff80001d6e1ff0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9758,ffff80001d6e1fa0,ffff80001d6e1ff0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e2070) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd51f0, count: -8