login: panic: receive 3: so 0xfffffd805e4d0180, so_type 3, m 0xfffffd806331b400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *516166 90209 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82190022) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4d0180,0,ffff80001d37e1d8,0,0,ffff80001d37e0e4) at soreceive+0x16e7 soo_read(fffffd805eaee5a0,ffff80001d37e1d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff84f8,6,ffff80001d37e1d8,0,ffff80001d37e2c0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff84f8,ffff80001d37e270,ffff80001d37e2c0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37e340) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7300, 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 3: so 0xfffffd805e4d0180, so_type 3, m 0xfffffd806331b400, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff82190022) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4d0180,0,ffff80001d37e1d8,0,0,ffff80001d37e0e4) at soreceive+0x16e7 soo_read(fffffd805eaee5a0,ffff80001d37e1d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff84f8,6,ffff80001d37e1d8,0,ffff80001d37e2c0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff84f8,ffff80001d37e270,ffff80001d37e2c0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37e340) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd7300, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37df20 rbx 0xffff80001d37dfd0 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37dee0 r9 0x1 r10 0x900327da51ddb65e r11 0xb8681ad052aae7b r12 0x3000000008 r13 0xffff80001d37df30 r14 0x100 r15 0x1 rip 0xffffffff81dd27d8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37df10 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=516166 stat=onproc flags process=0 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff93c8,0xffff8000ffff8780 process=0xffff8000ffff6010 user=0xffff80001d379000, vmspace=0xfffffd806bc0a440 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 87226 415607 50991 0 3 0x82 wait syz-execprog 87226 266959 50991 0 3 0x4000082 nanosleep syz-execprog 87226 146866 50991 0 3 0x4000082 thrsleep syz-execprog 87226 478418 50991 0 3 0x4000082 thrsleep syz-execprog 87226 204664 50991 0 3 0x4000082 thrsleep syz-execprog 87226 358194 50991 0 3 0x4000082 thrsleep syz-execprog 87226 288216 50991 0 3 0x4000082 thrsleep syz-execprog 50991 398913 50901 0 3 0x10008a pause ksh 50901 37420 75188 0 3 0x92 select sshd 34306 432074 1 0 3 0x100083 ttyin getty 75188 376332 1 0 3 0x80 select sshd 87808 409013 36952 73 3 0x100090 kqread syslogd 36952 405296 1 0 3 0x100082 netio syslogd 46982 169023 1 77 2 0x100010 dhclient *90209 516166 1 0 7 0 dhclient 62685 381873 0 0 3 0x14200 pgzero zerothread 48267 121103 0 0 3 0x14200 aiodoned aiodoned 21312 234999 0 0 3 0x14200 syncer update 1140 395719 0 0 3 0x14200 cleaner cleaner 99089 459600 0 0 3 0x14200 reaper reaper 3899 236243 0 0 3 0x14200 pgdaemon pagedaemon 68246 477848 0 0 3 0x14200 bored crynlk 7616 99271 0 0 3 0x14200 bored crypto 39841 51947 0 0 3 0x40014200 acpi0 acpi0 55911 299501 0 0 2 0x14200 softnet 63395 347607 0 0 2 0x14200 systqmp 28665 20435 0 0 3 0x14200 bored systq 85108 237470 0 0 3 0x40014200 bored softclock 36567 511281 0 0 3 0x40014200 idle0 47971 320017 0 0 3 0x14200 bored smr 1 443170 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 74 11K 12K 78643K 860 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 3001K 3065K 78643K 3058 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 2 1 1 1 0 8 1 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 4010 0 4010 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 2 1 1 1 0 8 1 mcl2k 2048 5482 0 5453 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9511 0 9436 8 1 7 7 0 8 0 bufpl 280 5845 0 1326 323 0 323 323 0 8 0 anonpl 16 20320 0 18853 15 2 13 13 0 107 6 amapchunkpl 152 717 0 657 5 0 5 5 0 158 2 amappl16 192 78 0 55 2 0 2 2 0 8 0 amappl15 184 51 0 46 1 0 1 1 0 8 0 amappl14 176 20 0 18 2 1 1 1 0 8 0 amappl13 168 1 0 0 1 0 1 1 0 8 0 amappl12 160 13 0 10 2 1 1 1 0 8 0 amappl11 152 47 0 36 1 0 1 1 0 8 0 amappl10 144 13 0 11 2 1 1 1 0 8 0 amappl9 136 392 0 390 1 0 1 1 0 8 0 amappl8 128 85 0 75 1 0 1 1 0 8 0 amappl7 120 86 0 77 1 0 1 1 0 8 0 amappl6 112 59 0 53 1 0 1 1 0 8 0 amappl5 104 133 0 124 1 0 1 1 0 8 0 amappl4 96 427 0 403 1 0 1 1 0 8 0 amappl3 88 124 0 116 1 0 1 1 0 8 0 amappl2 80 854 0 795 3 0 3 3 0 8 1 amappl1 72 13639 0 13241 27 10 17 20 0 8 8 amappl 80 419 0 394 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 6055 0 6040 1 0 1 1 0 8 0 vmmpepl 168 29674 0 28803 89 10 79 79 0 357 39 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 103600 0 99892 114 1 113 113 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 112 124 0 6 4 0 4 4 0 8 0 ddb>