login: panic: receive 1a: so 0xfffffd806b646000, so_type 3, m 0xfffffd805a95ea00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 7860 37244 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d80c0) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806b646000,0,ffff80001d6e5ac8,0,0,ffff80001d6e59d4) at soreceive+0x170a sys/kern/uipc_socket.c:983 soo_read(fffffd8061bf3708,ffff80001d6e5ac8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a94e8,6,ffff80001d6e5ac8,0,ffff80001d6e5bb0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a94e8,ffff80001d6e5b60,ffff80001d6e5bb0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5c30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4750, 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 0xfffffd806b646000, so_type 3, m 0xfffffd805a95ea00, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d80c0) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806b646000,0,ffff80001d6e5ac8,0,0,ffff80001d6e59d4) at soreceive+0x170a sys/kern/uipc_socket.c:983 soo_read(fffffd8061bf3708,ffff80001d6e5ac8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a94e8,6,ffff80001d6e5ac8,0,ffff80001d6e5bb0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a94e8,ffff80001d6e5b60,ffff80001d6e5bb0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5c30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4750, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d6e5810 rbx 0xffff80001d6e58c0 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff819e2c3f kprintf+0x15f r9 0x1 r10 0x2 r11 0x7372a27057699b22 r12 0x3000000008 r13 0xffff80001d6e5820 r14 0x100 r15 0x1 rip 0xffffffff823b1bf8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d6e5800 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=7860 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aa868,0xffff80001d6a99d8 process=0xffff80001d6c4e90 user=0xffff80001d6e0000, vmspace=0xfffffd806bc0a440 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 42924 95400 71067 0 2 0 syz-executor.0 42924 423317 71067 0 2 0x4000000 syz-executor.0 43906 504214 0 0 3 0x14200 bored sosplice 37896 450834 51123 0 2 0x2 syz-executor.1 71067 438421 51123 0 2 0x482 syz-executor.0 51123 430347 43407 0 3 0x82 thrsleep syz-fuzzer 51123 106203 43407 0 3 0x4000082 nanosleep syz-fuzzer 51123 492380 43407 0 3 0x4000082 thrsleep syz-fuzzer 51123 443067 43407 0 3 0x4000082 thrsleep syz-fuzzer 51123 367136 43407 0 3 0x4000082 thrsleep syz-fuzzer 51123 87300 43407 0 3 0x4000082 kqread syz-fuzzer 43407 169347 49016 0 3 0x10008a pause ksh 49016 88226 96526 0 3 0x92 select sshd 45754 441744 1 0 3 0x100083 ttyin getty 96526 468255 1 0 3 0x80 select sshd 13401 58814 91128 73 3 0x100090 kqread syslogd 91128 411792 1 0 3 0x100082 netio syslogd 32670 194414 1 77 2 0x100010 dhclient *37244 7860 1 0 7 0 dhclient 878 230680 0 0 3 0x14200 bored smr 92801 388232 0 0 2 0x14200 zerothread 81636 316675 0 0 3 0x14200 aiodoned aiodoned 2824 428382 0 0 3 0x14200 syncer update 31824 291824 0 0 3 0x14200 cleaner cleaner 74612 130479 0 0 3 0x14200 reaper reaper 27280 89642 0 0 3 0x14200 pgdaemon pagedaemon 74454 19234 0 0 3 0x14200 bored crynlk 95737 184820 0 0 3 0x14200 bored crypto 91500 388566 0 0 3 0x40014200 acpi0 acpi0 15501 218214 0 0 3 0x14200 bored softnet 73206 176353 0 0 3 0x14200 bored systqmp 25142 136961 0 0 3 0x14200 bored systq 85865 57671 0 0 3 0x40014200 bored softclock 50609 253216 0 0 3 0x40014200 idle0 1 116423 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 9474 6332K 6586K 78643K 10763 0 pcb 13 8K 8K 78643K 47 0 rtable 112 4K 8K 78643K 387 0 ifaddr 59 13K 13K 78643K 120 0 counters 21 16K 16K 78643K 28 0 ioctlops 0 0K 4K 78643K 54 0 iov 0 0K 16K 78643K 16 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1295 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 20 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 208 0 proc 49 38K 54K 78643K 410 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 15 0 in_multi 47 2K 3K 78643K 88 0 ether_multi 1 0K 0K 78643K 3 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 202 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 135 56K 58K 78643K 1362 0 UVM aobj 6 2K 2K 78643K 8 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 14 0 NDP 8 0K 0K 78643K 25 0 temp 85 3852K 3916K 78643K 3054 0 kqueue 3 4K 8K 78643K 8 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 10 0 4 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 69 0 25 2 0 2 2 0 8 0 unpcb 120 65 0 57 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 22 0 22 1 1 0 1 0 8 0 tcpcb 544 48 0 42 1 0 1 1 0 8 0 inpcb 296 170 0 163 3 1 2 2 0 8 1 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 15 0 9 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfrktable 1344 32 0 30 1 0 1 1 0 8 0 pftag 88 2 0 2 1 0 1 1 0 8 1 pfrule 1360 10 0 6 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 240 0 50 13 1 12 13 0 8 0 art_table 32 241 0 50 2 0 2 2 0 8 0 art_node 16 68 0 28 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 3 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 5 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1636 0 242 88 0 88 88 0 8 0 ffsino 240 1636 0 242 83 0 83 83 0 8 0 nchpl 144 2095 0 508 60 0 60 60 0 8 0 uvmvnodes 72 1732 0 0 32 0 32 32 0 8 0 vnodes 208 1732 0 0 92 0 92 92 0 8 0 namei 1024 5772 0 5771 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 10 0 8 1 0 1 1 0 8 0 scxspl 192 6149 0 6149 1 0 1 1 0 8 1 plimitpl 152 31 0 24 1 0 1 1 0 8 0 sigapl 424 392 0 363 4 0 4 4 0 8 0 futexpl 56 3357 0 3357 1 0 1 1 0 8 1 knotepl 112 81 0 61 1 0 1 1 0 8 0 kqueuepl 144 26 0 24 1 0 1 1 0 8 0 pipepl 272 91 0 80 2 0 2 2 0 8 0 fdescpl 432 377 0 363 2 0 2 2 0 8 0 filepl 120 2116 0 2018 4 0 4 4 0 8 1 lockfpl 104 245 0 244 1 0 1 1 0 8 0 lockfspl 48 57 0 56 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 10 1 0 1 1 0 8 0 ucredpl 96 147 0 140 1 0 1 1 0 8 0 zombiepl 144 363 0 363 1 0 1 1 0 8 1 processpl 928 392 0 363 4 0 4 4 0 8 0 procpl 624 609 0 574 4 0 4 4 0 8 1 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 270 0 253 3 0 3 3 0 8 1 mcl64k 65536 5 0 5 2 1 1 1 0 8 1 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl12k 12288 10 0 10 2 1 1 1 0 8 1 mcl9k 9216 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 29 0 29 2 1 1 1 0 8 1 mcl2k2 2112 4 0 4 1 0 1 1 0 8 1 mcl2k 2048 95815 0 95771 16 9 7 14 0 8 0 mtagpl 96 16 0 7 2 1 1 1 0 8 0 mbufpl 256 152267 0 152114 15 2 13 13 0 8 0 bufpl 280 3548 0 118 245 0 245 245 0 8 0 anonpl 16 56379 0 38236 83 2 81 81 0 107 8 amapchunkpl 152 2194 0 1990 18 2 16 16 0 158 7 amappl16 192 1772 0 830 48 0 48 48 0 8 0 amappl15 184 10 0 8 1 0 1 1 0 8 0 amappl14 176 81 0 77 1 0 1 1 0 8 0 amappl13 168 34 0 31 1 0 1 1 0 8 0 amappl12 160 21 0 18 1 0 1 1 0 8 0 amappl11 152 50 0 39 1 0 1 1 0 8 0 amappl10 144 15 0 11 1 0 1 1 0 8 0 amappl9 136 416 0 413 1 0 1 1 0 8 0 amappl8 128 370 0 342 1 0 1 1 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 28 0 19 1 0 1 1 0 8 0 amappl5 104 325 0 314 1 0 1 1 0 8 0 amappl4 96 441 0 415 1 0 1 1 0 8 0 amappl3 88 211 0 202 1 0 1 1 0 8 0 amappl2 80 2116 0 2053 2 0 2 2 0 8 0 amappl1 72 17612 0 17204 24 15 9 17 0 8 0 amappl 80 870 0 810 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 7 0 2 1 0 1 1 0 8 0 uaddrrnd 24 379 0 363 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 379 0 363 1 0 1 1 0 8 0 vmmpekpl 168 6534 0 6505 2 0 2 2 0 8 0 vmmpepl 168 53834 0 51795 129 12 117 122 0 357 24 vmsppl 272 378 0 363 2 0 2 2 0 8 0 pdppl 4096 764 0 728 6 1 5 6 0 8 0 pvpl 32 173640 0 152495 192 0 192 192 0 265 21 pmappl 200 378 0 363 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 247 0 17 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(ffffffff823d80c0) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806b646000,0,ffff80001d6e5ac8,0,0,ffff80001d6e59d4) at soreceive+0x170a sys/kern/uipc_socket.c:983 soo_read(fffffd8061bf3708,ffff80001d6e5ac8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a94e8,6,ffff80001d6e5ac8,0,ffff80001d6e5bb0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a94e8,ffff80001d6e5b60,ffff80001d6e5bb0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5c30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4750, 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(ffffffff823d80c0) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806b646000,0,ffff80001d6e5ac8,0,0,ffff80001d6e59d4) at soreceive+0x170a sys/kern/uipc_socket.c:983 soo_read(fffffd8061bf3708,ffff80001d6e5ac8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a94e8,6,ffff80001d6e5ac8,0,ffff80001d6e5bb0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a94e8,ffff80001d6e5b60,ffff80001d6e5bb0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5c30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4750, count: -8