login: panic: receive 1a: so 0xfffffd805e5a7320, so_type 3, m 0xfffffd806bc22400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *164407 87778 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d3bf6) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e5a7320,0,ffff80001d6e52c8,0,0,ffff80001d6e51d4) at soreceive+0x170a sys/kern/uipc_socket.c:983 soo_read(fffffd80683f7528,ffff80001d6e52c8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9c38,6,ffff80001d6e52c8,0,ffff80001d6e53b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9c38,ffff80001d6e5360,ffff80001d6e53b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5430) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6f90, 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 0xfffffd805e5a7320, so_type 3, m 0xfffffd806bc22400, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d3bf6) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e5a7320,0,ffff80001d6e52c8,0,0,ffff80001d6e51d4) at soreceive+0x170a sys/kern/uipc_socket.c:983 soo_read(fffffd80683f7528,ffff80001d6e52c8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9c38,6,ffff80001d6e52c8,0,ffff80001d6e53b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9c38,ffff80001d6e5360,ffff80001d6e53b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5430) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6f90, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d6e5010 rbx 0xffff80001d6e50c0 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff813428af kprintf+0x15f r9 0x1 r10 0x2 r11 0xd719ce5f7b158bdb r12 0x3000000008 r13 0xffff80001d6e5020 r14 0x100 r15 0x1 rip 0xffffffff81f2faa8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d6e5000 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=164407 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a99c8,0xffff80001d6a9eb8 process=0xffff80001d6c4af0 user=0xffff80001d6e0000, vmspace=0xfffffd806bc09220 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 28290 219472 56768 0 2 0 syz-executor.1 28290 159958 56768 0 2 0x4000000 syz-executor.1 95805 355004 67824 0 3 0x80 nanosleep syz-executor.0 95805 323348 67824 0 3 0x4000080 semwait syz-executor.0 95805 383789 67824 0 3 0x4000080 fsleep syz-executor.0 56768 307896 98804 0 3 0x82 nanosleep syz-executor.1 67824 330098 98804 0 3 0x82 nanosleep syz-executor.0 98804 258304 38219 0 3 0x82 kqread syz-fuzzer 98804 84294 38219 0 3 0x4000082 nanosleep syz-fuzzer 98804 313001 38219 0 3 0x4000082 thrsleep syz-fuzzer 98804 36447 38219 0 3 0x4000082 thrsleep syz-fuzzer 98804 264150 38219 0 3 0x4000082 thrsleep syz-fuzzer 98804 213808 38219 0 3 0x4000082 thrsleep syz-fuzzer 98804 472271 38219 0 3 0x4000082 thrsleep syz-fuzzer 98804 114718 38219 0 3 0x4000082 thrsleep syz-fuzzer 38219 219044 14284 0 3 0x10008a pause ksh 14284 280219 68677 0 3 0x92 select sshd 35096 125369 1 0 3 0x100083 ttyin getty 68677 448824 1 0 3 0x80 select sshd 75774 61401 66488 73 3 0x100090 kqread syslogd 66488 514786 1 0 3 0x100082 netio syslogd 3724 509343 1 77 2 0x100010 dhclient *87778 164407 1 0 7 0 dhclient 62680 457986 0 0 3 0x14200 bored smr 78216 478363 0 0 2 0x14200 zerothread 38285 322019 0 0 3 0x14200 aiodoned aiodoned 10471 421925 0 0 3 0x14200 syncer update 76403 430459 0 0 3 0x14200 cleaner cleaner 8614 226480 0 0 3 0x14200 reaper reaper 44348 109926 0 0 3 0x14200 pgdaemon pagedaemon 70864 15088 0 0 3 0x14200 bored crynlk 55200 486156 0 0 3 0x14200 bored crypto 50826 14653 0 0 3 0x40014200 acpi0 acpi0 29137 398784 0 0 3 0x14200 bored softnet 13751 147712 0 0 3 0x14200 bored systqmp 98356 154425 0 0 3 0x14200 bored systq 24421 474704 0 0 3 0x40014200 bored softclock 13679 436860 0 0 3 0x40014200 idle0 1 344614 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 9465 6463K 6463K 78643K 10592 0 pcb 13 8K 8K 78643K 29 0 rtable 105 3K 3K 78643K 192 0 ifaddr 44 10K 10K 78643K 46 0 counters 21 16K 16K 78643K 21 0 ioctlops 0 0K 2K 78643K 15 0 iov 0 0K 12K 78643K 2 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1235 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 10 0K 0K 78643K 10 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 6 17K 25K 78643K 58 0 proc 48 38K 54K 78643K 361 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 1 0 in_multi 33 2K 2K 78643K 35 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 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 184 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 121 22K 23K 78643K 993 0 UVM aobj 3 2K 2K 78643K 3 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 65 3847K 3911K 78643K 1840 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 21 0 19 1 0 1 1 0 8 0 rtentry 112 45 0 1 2 0 2 2 0 8 0 unpcb 120 29 0 21 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 172 0 172 1 0 1 1 0 8 1 tcpcb 544 16 0 12 1 0 1 1 0 8 0 inpcb 296 58 0 51 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 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1455 0 55 88 0 88 88 0 8 0 ffsino 240 1455 0 55 83 0 83 83 0 8 0 nchpl 144 1722 0 115 60 0 60 60 0 8 0 uvmvnodes 72 1510 0 0 28 0 28 28 0 8 0 vnodes 208 1510 0 0 80 0 80 80 0 8 0 namei 1024 4261 0 4261 1 0 1 1 0 8 1 scxspl 192 4794 0 4794 1 0 1 1 0 8 1 plimitpl 152 16 0 9 1 0 1 1 0 8 0 sigapl 424 244 0 215 4 0 4 4 0 8 0 futexpl 56 572 0 571 1 0 1 1 0 8 0 knotepl 112 61 0 42 1 0 1 1 0 8 0 kqueuepl 144 29 0 25 1 0 1 1 0 8 0 pipepl 272 77 0 66 1 0 1 1 0 8 0 fdescpl 432 230 0 215 2 0 2 2 0 8 0 filepl 120 1163 0 1063 4 0 4 4 0 8 0 lockfpl 104 13 0 12 1 0 1 1 0 8 0 lockfspl 48 6 0 5 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 62 0 55 1 0 1 1 0 8 0 zombiepl 144 215 0 215 1 0 1 1 0 8 1 processpl 928 244 0 215 4 0 4 4 0 8 0 procpl 624 286 0 247 4 0 4 4 0 8 0 sockpl 400 108 0 91 3 0 3 3 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 1 0 1 1 0 1 1 0 8 1 mcl4k 4096 11 0 11 2 1 1 1 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 93816 0 93762 16 1 15 16 0 8 7 mtagpl 96 8 0 2 2 1 1 1 0 8 0 mbufpl 256 147787 0 147653 10 0 10 10 0 8 0 bufpl 280 3373 0 126 232 0 232 232 0 8 0 anonpl 16 40514 0 23752 69 1 68 68 0 107 0 amapchunkpl 152 1254 0 1115 8 0 8 8 0 158 2 amappl16 192 1126 0 210 46 0 46 46 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 30 0 22 1 0 1 1 0 8 0 amappl13 168 27 0 24 1 0 1 1 0 8 0 amappl12 160 18 0 15 2 1 1 1 0 8 0 amappl11 152 71 0 58 1 0 1 1 0 8 0 amappl10 144 14 0 10 1 0 1 1 0 8 0 amappl9 136 371 0 369 1 0 1 1 0 8 0 amappl8 128 325 0 287 2 0 2 2 0 8 0 amappl7 120 106 0 95 1 0 1 1 0 8 0 amappl6 112 38 0 34 1 0 1 1 0 8 0 amappl5 104 178 0 164 1 0 1 1 0 8 0 amappl4 96 417 0 392 1 0 1 1 0 8 0 amappl3 88 103 0 95 1 0 1 1 0 8 0 amappl2 80 1020 0 944 2 0 2 2 0 8 0 amappl1 72 13978 0 13529 23 8 15 17 0 8 6 amappl 80 525 0 481 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 230 0 215 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 230 0 215 1 0 1 1 0 8 0 vmmpekpl 168 5789 0 5760 2 0 2 2 0 8 0 vmmpepl 168 35942 0 33808 123 6 117 117 0 357 24 vmsppl 272 229 0 215 2 0 2 2 0 8 1 pdppl 4096 466 0 430 6 0 6 6 0 8 1 pvpl 32 134614 0 114767 163 0 163 163 0 265 2 pmappl 200 229 0 215 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 236 0 4 7 0 7 7 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(ffffffff823d3bf6) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e5a7320,0,ffff80001d6e52c8,0,0,ffff80001d6e51d4) at soreceive+0x170a sys/kern/uipc_socket.c:983 soo_read(fffffd80683f7528,ffff80001d6e52c8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9c38,6,ffff80001d6e52c8,0,ffff80001d6e53b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9c38,ffff80001d6e5360,ffff80001d6e53b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5430) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6f90, 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(ffffffff823d3bf6) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e5a7320,0,ffff80001d6e52c8,0,0,ffff80001d6e51d4) at soreceive+0x170a sys/kern/uipc_socket.c:983 soo_read(fffffd80683f7528,ffff80001d6e52c8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9c38,6,ffff80001d6e52c8,0,ffff80001d6e53b0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9c38,ffff80001d6e5360,ffff80001d6e53b0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5430) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc6f90, count: -8