panic: receive 3: so 0xfffffd80660da300, so_type 3, m 0xfffffd8066dbd600, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *111284 7154 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8218f3c4) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd80660da300,0,ffff80001d37ea88,0,0,ffff80001d37e994) at soreceive+0x16e7 soo_read(fffffd8065ffe690,ffff80001d37ea88,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8c60,6,ffff80001d37ea88,0,ffff80001d37eb70) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff8c60,ffff80001d37eb20,ffff80001d37eb70) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37ebf0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffea1d0, 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 0xfffffd80660da300, so_type 3, m 0xfffffd8066dbd600, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff8218f3c4) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd80660da300,0,ffff80001d37ea88,0,0,ffff80001d37e994) at soreceive+0x16e7 soo_read(fffffd8065ffe690,ffff80001d37ea88,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff8c60,6,ffff80001d37ea88,0,ffff80001d37eb70) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff8c60,ffff80001d37eb20,ffff80001d37eb70) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37ebf0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffea1d0, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37e7d0 rbx 0xffff80001d37e880 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37e790 r9 0x1 r10 0x98930ae6303013ca r11 0xbf8ac6b228f73df8 r12 0x3000000008 r13 0xffff80001d37e7e0 r14 0x100 r15 0x1 rip 0xffffffff812a12c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e7c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=111284 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff89e8,0xffff8000ffff9160 process=0xffff8000ffff6378 user=0xffff80001d379000, vmspace=0xfffffd806bc0a000 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 62893 1147 55691 0 3 0x82 thrsleep syz-execprog 62893 164978 55691 0 3 0x4000082 nanosleep syz-execprog 62893 90437 55691 0 3 0x4000082 thrsleep syz-execprog 62893 444833 55691 0 3 0x4000082 thrsleep syz-execprog 62893 324325 55691 0 3 0x4000082 wait syz-execprog 62893 459962 55691 0 3 0x4000082 thrsleep syz-execprog 62893 466172 55691 0 3 0x4000082 thrsleep syz-execprog 55691 184757 58187 0 3 0x10008a pause ksh 58187 395460 42093 0 3 0x92 select sshd 70505 477617 1 0 3 0x100083 ttyin getty 42093 427541 1 0 3 0x80 select sshd 92863 207883 58415 73 3 0x100090 kqread syslogd 58415 271085 1 0 3 0x100082 netio syslogd 8111 371049 1 77 2 0x100010 dhclient * 7154 111284 1 0 7 0 dhclient 78794 155179 0 0 3 0x14200 pgzero zerothread 60772 440002 0 0 3 0x14200 aiodoned aiodoned 71230 34607 0 0 3 0x14200 syncer update 74367 82586 0 0 3 0x14200 cleaner cleaner 53978 86108 0 0 3 0x14200 reaper reaper 31316 378368 0 0 3 0x14200 pgdaemon pagedaemon 22913 354024 0 0 3 0x14200 bored crynlk 32407 190794 0 0 3 0x14200 bored crypto 1096 472920 0 0 3 0x40014200 acpi0 acpi0 93868 176083 0 0 2 0x14200 softnet 35174 367320 0 0 2 0x14200 systqmp 27845 418601 0 0 3 0x14200 bored systq 13776 295764 0 0 3 0x40014200 bored softclock 89667 369859 0 0 3 0x40014200 idle0 88472 263851 0 0 3 0x14200 bored smr 1 156391 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 75 11K 12K 78643K 869 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 1 0 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 256 167 0 0 11 0 11 11 0 8 0 art_table 32 168 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 3865 0 3865 1 0 1 1 0 8 1 scxspl 192 4004 0 4004 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 120 999 0 947 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 1 0 1 1 0 8 1 mcl2k 2048 5485 0 5452 7 2 5 7 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9525 0 9442 9 2 7 7 0 8 0 bufpl 280 5846 0 1326 323 0 323 323 0 8 0 anonpl 16 20548 0 19086 14 1 13 13 0 107 6 amapchunkpl 152 767 0 707 5 0 5 5 0 158 2 amappl16 192 92 0 70 2 0 2 2 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 23 0 19 1 0 1 1 0 8 0 amappl12 160 7 0 6 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 11 0 8 1 0 1 1 0 8 0 amappl9 136 395 0 392 1 0 1 1 0 8 0 amappl8 128 84 0 74 1 0 1 1 0 8 0 amappl7 120 85 0 76 1 0 1 1 0 8 0 amappl6 112 54 0 51 1 0 1 1 0 8 0 amappl5 104 130 0 121 1 0 1 1 0 8 0 amappl4 96 430 0 404 1 0 1 1 0 8 0 amappl3 88 127 0 118 1 0 1 1 0 8 0 amappl2 80 851 0 792 3 0 3 3 0 8 1 amappl1 72 13485 0 13094 27 11 16 20 0 8 8 amappl 80 427 0 402 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 6060 0 6045 1 0 1 1 0 8 0 vmmpepl 168 29316 0 28457 83 5 78 78 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 104053 0 100346 113 0 113 113 0 265 82 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 112 125 0 6 4 0 4 4 0 8 0 ddb>