panic: receive 1: so 0xfffffd805e4d2000, so_type 3, sb_cc 112 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *495424 70261 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821a2cc5) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4d2000,0,ffff80001d37e5f8,0,0,ffff80001d37e504) at soreceive+0x16ac sys/kern/uipc_socket.c:798 soo_read(fffffd80619fc438,ffff80001d37e5f8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff93c8,6,ffff80001d37e5f8,0,ffff80001d37e6e0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff93c8,ffff80001d37e690,ffff80001d37e6e0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37e760) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe2e30, 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 0xfffffd805e4d2000, so_type 3, sb_cc 112 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821a2cc5) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e4d2000,0,ffff80001d37e5f8,0,0,ffff80001d37e504) at soreceive+0x16ac sys/kern/uipc_socket.c:798 soo_read(fffffd80619fc438,ffff80001d37e5f8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff8000ffff93c8,6,ffff80001d37e5f8,0,ffff80001d37e6e0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff8000ffff93c8,ffff80001d37e690,ffff80001d37e6e0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d37e760) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe2e30, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37e340 rbx 0xffff80001d37e3f0 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d37e300 r9 0x1 r10 0 r11 0xe9981e387ca5ecbc r12 0x3000000008 r13 0xffff80001d37e350 r14 0x100 r15 0x1 rip 0xffffffff815afb78 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e330 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=495424 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8008,0xffff8000ffff9650 process=0xffff8000ffff6a48 user=0xffff80001d379000, vmspace=0xfffffd806bc09110 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 37508 121112 60178 0 2 0 syz-executor.0 37508 63995 60178 0 3 0x4000000 tqbar syz-executor.0 14954 26298 0 0 3 0x14200 bored sosplice 60178 2213 90824 0 2 0x482 syz-executor.0 13131 306042 90824 0 3 0x82 nanosleep syz-executor.1 90824 296163 40335 0 3 0x82 thrsleep syz-fuzzer 90824 141758 40335 0 3 0x4000082 thrsleep syz-fuzzer 90824 342675 40335 0 3 0x4000082 thrsleep syz-fuzzer 90824 485092 40335 0 3 0x4000082 thrsleep syz-fuzzer 90824 317874 40335 0 3 0x4000082 kqread syz-fuzzer 90824 184266 40335 0 3 0x4000082 thrsleep syz-fuzzer 90824 60246 40335 0 3 0x4000082 thrsleep syz-fuzzer 90824 112473 40335 0 3 0x4000082 thrsleep syz-fuzzer 40335 50796 70873 0 3 0x10008a pause ksh 70873 344866 22086 0 3 0x92 select sshd 19741 69706 1 0 3 0x100083 ttyin getty 22086 451193 1 0 3 0x80 select sshd 97981 521468 50252 73 3 0x100090 kqread syslogd 50252 153514 1 0 3 0x100082 netio syslogd 77395 491433 1 77 2 0x100010 dhclient *70261 495424 1 0 7 0 dhclient 73806 507255 0 0 2 0x14200 zerothread 64590 391545 0 0 3 0x14200 aiodoned aiodoned 62243 179846 0 0 3 0x14200 syncer update 85617 450618 0 0 3 0x14200 cleaner cleaner 10000 316994 0 0 3 0x14200 reaper reaper 14644 261939 0 0 3 0x14200 pgdaemon pagedaemon 77103 150839 0 0 3 0x14200 bored crynlk 71145 442687 0 0 3 0x14200 bored crypto 82709 217588 0 0 3 0x40014200 acpi0 acpi0 97846 490762 0 0 2 0x14200 softnet 54409 170849 0 0 2 0x14200 systqmp 55811 474450 0 0 3 0x14200 bored systq 20543 16306 0 0 3 0x40014200 bored softclock 77263 36789 0 0 3 0x40014200 idle0 51724 97527 0 0 3 0x14200 bored smr 1 249607 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 6334K 6588K 78643K 10697 0 pcb 13 8K 8K 78643K 29 0 rtable 74 10K 11K 78643K 320 0 ifaddr 49 10K 14K 78643K 92 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 45 0 iov 0 0K 12K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1215 76K 77K 78643K 1262 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 6 0K 0K 78643K 6 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 220 0 sigio 0 0K 0K 78643K 10 0 proc 48 38K 54K 78643K 359 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 6 0 in_multi 63 2K 3K 78643K 136 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 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 183 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 111 22K 31K 78643K 1312 0 UVM aobj 4 2K 2K 78643K 4 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 26 0 NDP 8 0K 0K 78643K 15 0 temp 82 3009K 3074K 78643K 3636 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 4 1 0 1 1 0 8 0 rtpcb 80 29 0 27 1 0 1 1 0 8 0 rtentry 112 87 0 60 2 0 2 2 0 8 0 unpcb 120 49 0 41 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 20 0 20 2 2 0 1 0 8 0 tcpcb 544 26 0 22 1 0 1 1 0 8 0 inpcb 280 324 0 316 2 0 2 2 0 8 1 nd6 48 7 0 7 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 543 0 349 14 0 14 14 0 8 0 art_table 32 544 0 349 2 0 2 2 0 8 0 art_node 16 86 0 52 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 4 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1633 0 234 46 0 46 46 0 8 0 ffsino 240 1633 0 234 83 0 83 83 0 8 0 nchpl 144 2063 0 452 60 0 60 60 0 8 0 uvmvnodes 72 1706 0 0 32 0 32 32 0 8 0 vnodes 208 1706 0 0 90 0 90 90 0 8 0 namei 1024 5016 0 5016 1 0 1 1 0 8 1 scxspl 192 5673 0 5673 1 0 1 1 0 8 1 plimitpl 152 14 0 7 1 0 1 1 0 8 0 sigapl 432 391 0 378 2 0 2 2 0 8 0 futexpl 56 2719 0 2719 1 0 1 1 0 8 1 knotepl 112 64 0 45 1 0 1 1 0 8 0 kqueuepl 104 142 0 139 1 0 1 1 0 8 0 pipepl 112 228 0 209 1 0 1 1 0 8 0 fdescpl 424 392 0 378 2 0 2 2 0 8 0 filepl 120 1988 0 1891 4 0 4 4 0 8 1 lockfpl 104 16 0 15 1 0 1 1 0 8 0 lockfspl 48 5 0 4 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 96 121 0 114 1 0 1 1 0 8 0 zombiepl 144 378 0 377 1 0 1 1 0 8 0 processpl 872 407 0 377 4 0 4 4 0 8 0 procpl 632 616 0 578 4 0 4 4 0 8 0 sosppl 128 7 0 7 1 0 1 1 0 8 1 sockpl 384 408 0 390 3 0 3 3 0 8 1 mcl64k 65536 8 0 8 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 12 0 12 2 1 1 1 0 8 1 mcl2k 2048 69191 0 69143 16 4 12 13 0 8 5 mtagpl 80 9 0 6 2 1 1 1 0 8 0 mbufpl 256 110308 0 110245 15 3 12 12 0 8 0 bufpl 280 6357 0 1326 360 0 360 360 0 8 0 anonpl 16 52778 0 33911 86 1 85 85 0 107 5 amapchunkpl 152 1664 0 1516 11 0 11 11 0 158 4 amappl16 192 1848 0 751 56 0 56 56 0 8 1 amappl15 184 213 0 207 1 0 1 1 0 8 0 amappl14 176 28 0 24 1 0 1 1 0 8 0 amappl13 168 2 0 1 1 0 1 1 0 8 0 amappl12 160 113 0 111 2 1 1 1 0 8 0 amappl11 152 50 0 39 1 0 1 1 0 8 0 amappl10 144 17 0 14 1 0 1 1 0 8 0 amappl9 136 561 0 558 1 0 1 1 0 8 0 amappl8 128 110 0 89 1 0 1 1 0 8 0 amappl7 120 88 0 78 1 0 1 1 0 8 0 amappl6 112 56 0 49 1 0 1 1 0 8 0 amappl5 104 235 0 225 1 0 1 1 0 8 0 amappl4 96 603 0 575 1 0 1 1 0 8 0 amappl3 88 119 0 110 1 0 1 1 0 8 0 amappl2 80 2427 0 2358 3 1 2 3 0 8 0 amappl1 72 16402 0 15989 26 16 10 20 0 8 2 amappl 80 842 0 797 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 392 0 378 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 392 0 378 1 0 1 1 0 8 0 vmmpekpl 168 6406 0 6385 2 0 2 2 0 8 0 vmmpepl 168 54138 0 51953 136 5 131 131 0 357 31 vmsppl 272 391 0 378 2 0 2 2 0 8 1 pdppl 4096 790 0 756 6 0 6 6 0 8 1 pvpl 32 164567 0 142709 198 0 198 198 0 265 14 pmappl 200 391 0 378 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 149 0 10 4 0 4 4 0 8 0