login: panic: receive 1: so 0xfffffd806392f000, so_type 3, sb_cc 7854 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *139385 43100 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823db3b0) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806392f000,0,ffff80001d6e1b48,0,0,ffff80001d6e1a54) at soreceive+0x16ac sys/kern/uipc_socket.c:829 soo_read(fffffd80639f13c0,ffff80001d6e1b48,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8ed8,6,ffff80001d6e1b48,0,ffff80001d6e1c30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff8000ffff8ed8,ffff80001d6e1be0,ffff80001d6e1c30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e1cb0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff83e0, 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 0xfffffd806392f000, so_type 3, sb_cc 7854 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823db3b0) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806392f000,0,ffff80001d6e1b48,0,0,ffff80001d6e1a54) at soreceive+0x16ac sys/kern/uipc_socket.c:829 soo_read(fffffd80639f13c0,ffff80001d6e1b48,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8ed8,6,ffff80001d6e1b48,0,ffff80001d6e1c30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff8000ffff8ed8,ffff80001d6e1be0,ffff80001d6e1c30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e1cb0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff83e0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d6e1890 rbx 0xffff80001d6e1940 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffff80001d6e1850 r9 0xffffffff8122fb1f kprintf+0x15f r10 0x1 r11 0xfd74ec51e2b2bd46 r12 0x3000000008 r13 0xffff80001d6e18a0 r14 0x100 r15 0x1 rip 0xffffffff81b1d038 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d6e1880 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=139385 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8008,0xffff8000ffff9160 process=0xffff80001d6c0b20 user=0xffff80001d6dc000, vmspace=0xfffffd806bc09000 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 44502 293140 21022 0 2 0 syz-executor.1 44502 516918 21022 0 2 0x4000000 syz-executor.1 30607 277161 1 0 3 0x100083 ttyin getty 3201 11368 0 0 3 0x14200 acct acct 76113 419032 0 0 3 0x14280 nfsidl nfsio 19920 41867 0 0 3 0x14280 nfsidl nfsio 99012 296673 0 0 3 0x14280 nfsidl nfsio 13984 434475 0 0 3 0x14280 nfsidl nfsio 17627 490852 0 0 3 0x14280 nfsidl nfsio 37513 155061 0 0 3 0x14280 nfsidl nfsio 68693 46393 0 0 3 0x14280 nfsidl nfsio 65139 446306 0 0 3 0x14280 nfsidl nfsio 10150 175038 0 0 3 0x14280 nfsidl nfsio 66346 7989 0 0 3 0x14280 nfsidl nfsio 8514 182731 0 0 3 0x14280 nfsidl nfsio 79103 358554 0 0 3 0x14280 nfsidl nfsio 84846 165217 0 0 3 0x14280 nfsidl nfsio 75213 58116 0 0 3 0x14280 nfsidl nfsio 14967 348562 0 0 3 0x14280 nfsidl nfsio 1541 390978 0 0 3 0x14280 nfsidl nfsio 85447 232745 0 0 3 0x14280 nfsidl nfsio 21568 146529 0 0 3 0x14280 nfsidl nfsio 75333 330931 0 0 3 0x14280 nfsidl nfsio 46258 259646 0 0 3 0x14280 nfsidl nfsio 64630 425344 0 0 3 0x14200 bored sosplice 21022 168305 34290 0 2 0x482 syz-executor.1 34290 58495 19624 0 3 0x82 thrsleep syz-fuzzer 34290 115678 19624 0 2 0x4000482 syz-fuzzer 34290 6082 19624 0 3 0x4000082 thrsleep syz-fuzzer 34290 509733 19624 0 3 0x4000082 thrsleep syz-fuzzer 34290 360707 19624 0 3 0x4000082 thrsleep syz-fuzzer 34290 522956 19624 0 2 0x4000002 syz-fuzzer 34290 512172 19624 0 3 0x4000082 thrsleep syz-fuzzer 34290 385575 19624 0 3 0x4000082 thrsleep syz-fuzzer 19624 381195 48206 0 3 0x10008a pause ksh 48206 110081 36220 0 3 0x92 select sshd 36220 506127 1 0 3 0x80 select sshd 57837 133606 28074 73 3 0x100090 kqread syslogd 28074 21633 1 0 3 0x100082 netio syslogd 23917 347501 1 77 3 0x100090 poll dhclient *43100 139385 1 0 7 0 dhclient 44216 368157 0 0 3 0x14200 bored smr 14780 306216 0 0 2 0x14200 zerothread 35046 113873 0 0 3 0x14200 aiodoned aiodoned 63340 291338 0 0 3 0x14200 syncer update 94179 246998 0 0 3 0x14200 cleaner cleaner 75973 82218 0 0 3 0x14200 reaper reaper 20973 317478 0 0 3 0x14200 pgdaemon pagedaemon 34627 380224 0 0 3 0x14200 bored crynlk 96516 314722 0 0 3 0x14200 bored crypto 35575 324508 0 0 3 0x40014200 acpi0 acpi0 97596 359313 0 0 2 0x14200 softnet 71781 443966 0 0 3 0x14200 bored systqmp 36646 244352 0 0 3 0x14200 bored systq 26077 350970 0 0 2 0x40014200 softclock 5368 220977 0 0 3 0x40014200 idle0 1 241100 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 9497 6349K 6726K 78643K 11390 0 pcb 13 8K 8K 78643K 353 0 rtable 101 9K 11K 78643K 617 0 ifaddr 86 18K 22K 78643K 225 0 counters 20 16K 16K 78643K 31 0 ioctlops 0 0K 4K 78643K 83 0 iov 0 0K 16K 78643K 1337 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1502 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 12 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 264 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 903 0 sigio 0 0K 0K 78643K 6 0 proc 51 38K 63K 78643K 447 0 subproc 16 1K 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 65 0 in_multi 79 3K 4K 78643K 209 0 ether_multi 1 0K 0K 78643K 22 0 mrt 0 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 251 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 131 31K 43K 78643K 2821 0 UVM aobj 20 2K 3K 78643K 38 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 88 0 NDP 11 0K 0K 78643K 35 0 temp 100 3867K 3933K 78643K 11359 0 kqueue 3 4K 12K 78643K 32 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 8 0 2 1 0 1 1 0 8 0 rtpcb 88 51 0 49 1 0 1 1 0 8 0 rtentry 112 82 0 56 2 0 2 2 0 8 0 unpcb 120 325 0 317 1 0 1 1 0 8 0 syncache 272 10 0 10 3 2 1 1 0 8 1 tcpqe 32 367 0 367 2 2 0 1 0 8 0 tcpcb 592 212 0 205 3 1 2 3 0 8 1 ipq 40 5 0 5 1 1 0 1 0 8 0 ipqe 40 14 0 14 1 1 0 1 0 8 0 inpcb 296 1154 0 1146 2 0 2 2 0 8 1 nd6 48 31 0 30 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 ppxss 1136 3 0 3 2 2 0 1 0 8 0 pfrktable 1344 116 0 103 3 1 2 2 0 8 0 pftag 88 25 0 22 1 0 1 1 0 8 0 pfrule 1360 30 0 20 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 486 0 377 21 6 15 21 0 8 3 art_table 32 488 0 377 3 1 2 3 0 8 0 art_node 16 79 0 57 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 14 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 252 0 242 1 0 1 1 0 8 0 shmpl 112 35 0 18 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2515 0 1121 88 0 88 88 0 8 0 ffsino 240 2515 0 1121 83 0 83 83 0 8 0 nchpl 144 4452 0 2851 60 0 60 60 0 8 0 uvmvnodes 72 2745 0 0 50 0 50 50 0 8 0 vnodes 208 2745 0 0 145 0 145 145 0 8 0 namei 1024 11751 0 11751 1 0 1 1 0 8 1 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 42 0 34 1 0 1 1 0 8 0 scxspl 200 11964 0 11964 1 0 1 1 0 8 1 plimitpl 152 73 0 67 1 0 1 1 0 8 0 sigapl 424 1113 0 1064 6 0 6 6 0 8 0 futexpl 56 18161 0 18161 1 0 1 1 0 8 1 knotepl 112 93 0 75 1 0 1 1 0 8 0 kqueuepl 152 80 0 76 1 0 1 1 0 8 0 pipepl 272 174 0 164 2 1 1 2 0 8 0 fdescpl 432 1077 0 1064 2 0 2 2 0 8 0 filepl 120 6698 0 6622 4 0 4 4 0 8 0 lockfpl 104 156 0 155 1 0 1 1 0 8 0 lockfspl 48 56 0 55 1 0 1 1 0 8 0 sessionpl 120 19 0 10 1 0 1 1 0 8 0 pgrppl 48 29 0 20 1 0 1 1 0 8 0 ucredpl 96 781 0 774 1 0 1 1 0 8 0 zombiepl 144 1064 0 1064 1 0 1 1 0 8 1 processpl 944 1113 0 1064 7 0 7 7 0 8 0 procpl 632 2094 0 2037 6 0 6 6 0 8 1 sosppl 144 11 0 11 2 1 1 1 0 8 1 sockpl 400 1534 0 1516 5 1 4 4 0 8 2 mcl64k 65536 27 0 27 1 0 1 1 0 8 1 mcl16k 16384 5 0 5 2 1 1 1 0 8 1 mcl12k 12288 26 0 26 2 1 1 1 0 8 1 mcl9k 9216 12 0 12 1 0 1 1 0 8 1 mcl8k 8192 40 0 40 1 0 1 1 0 8 1 mcl4k 4096 69 0 69 2 1 1 1 0 8 1 mcl2k2 2112 5 0 5 3 2 1 1 0 8 1 mcl2k 2048 91669 0 91602 22 13 9 19 0 8 0 mtagpl 96 74 0 38 3 1 2 2 0 8 0 mbufpl 256 149849 0 149506 30 2 28 28 0 8 0 bufpl 280 5051 0 124 352 0 352 352 0 8 0 anonpl 16 100345 0 80823 85 2 83 83 0 107 0 amapchunkpl 152 4744 0 4543 30 14 16 21 0 158 7 amappl16 192 5403 0 4342 55 0 55 55 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 1 0 0 1 0 1 1 0 8 0 amappl13 168 33 0 30 1 0 1 1 0 8 0 amappl12 160 23 0 19 1 0 1 1 0 8 0 amappl11 152 45 0 36 1 0 1 1 0 8 0 amappl10 144 439 0 432 1 0 1 1 0 8 0 amappl9 136 333 0 329 1 0 1 1 0 8 0 amappl8 128 333 0 293 2 0 2 2 0 8 0 amappl7 120 535 0 520 1 0 1 1 0 8 0 amappl6 112 27 0 23 1 0 1 1 0 8 0 amappl5 104 1060 0 1048 1 0 1 1 0 8 0 amappl4 96 444 0 418 1 0 1 1 0 8 0 amappl3 88 160 0 150 1 0 1 1 0 8 0 amappl2 80 7775 0 7710 2 0 2 2 0 8 0 amappl1 72 32655 0 32255 23 14 9 17 0 8 0 amappl 80 2329 0 2276 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 37 0 18 1 0 1 1 0 8 0 uaddrrnd 24 1079 0 1064 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1079 0 1064 1 0 1 1 0 8 0 vmmpekpl 168 9519 0 9490 2 0 2 2 0 8 0 vmmpepl 168 133660 0 131544 123 20 103 113 0 357 8 vmsppl 272 1078 0 1064 3 1 2 2 0 8 0 pdppl 4096 2164 0 2130 6 1 5 6 0 8 0 pvpl 32 300827 0 278516 195 2 193 193 0 265 5 pmappl 200 1078 0 1064 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 278 0 31 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(ffffffff823db3b0) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806392f000,0,ffff80001d6e1b48,0,0,ffff80001d6e1a54) at soreceive+0x16ac sys/kern/uipc_socket.c:829 soo_read(fffffd80639f13c0,ffff80001d6e1b48,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8ed8,6,ffff80001d6e1b48,0,ffff80001d6e1c30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff8000ffff8ed8,ffff80001d6e1be0,ffff80001d6e1c30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e1cb0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff83e0, 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(ffffffff823db3b0) at panic+0x164 sys/kern/subr_prf.c:218 soreceive(fffffd806392f000,0,ffff80001d6e1b48,0,0,ffff80001d6e1a54) at soreceive+0x16ac sys/kern/uipc_socket.c:829 soo_read(fffffd80639f13c0,ffff80001d6e1b48,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8ed8,6,ffff80001d6e1b48,0,ffff80001d6e1c30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff8000ffff8ed8,ffff80001d6e1be0,ffff80001d6e1c30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e1cb0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff83e0, count: -8