panic: receive 1: so 0xfffffd805e564320, so_type 3, sb_cc 48 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *365072 37303 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821bf469) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e564320,0,ffff80001d3725e8,0,0,ffff80001d3724f4) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd805eb10618,ffff80001d3725e8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d339ea8,6,ffff80001d3725e8,0,ffff80001d3726d0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d339ea8,ffff80001d372680,ffff80001d3726d0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d372750) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff4f40, 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 0xfffffd805e564320, so_type 3, sb_cc 48 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821bf469) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e564320,0,ffff80001d3725e8,0,0,ffff80001d3724f4) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd805eb10618,ffff80001d3725e8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d339ea8,6,ffff80001d3725e8,0,ffff80001d3726d0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d339ea8,ffff80001d372680,ffff80001d3726d0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d372750) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff4f40, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d372330 rbx 0xffff80001d3723e0 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d3722f0 r9 0x1 r10 0 r11 0x54ff42d88e2eee22 r12 0x3000000008 r13 0xffff80001d372340 r14 0x100 r15 0x1 rip 0xffffffff81cd8128 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d372320 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=365072 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d339008,0xffff80001d33a128 process=0xffff8000ffffa390 user=0xffff80001d36d000, vmspace=0xfffffd806bc09770 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 8337 493006 61446 0 2 0 syz-executor.1 8337 421325 61446 0 2 0x4000000 syz-executor.1 61446 140356 92568 0 2 0x482 syz-executor.1 85023 372008 0 0 3 0x14200 bored sosplice 37705 422500 92568 0 2 0x482 syz-executor.0 92568 401665 62879 0 3 0x82 thrsleep syz-fuzzer 92568 316942 62879 0 3 0x4000082 thrsleep syz-fuzzer 92568 249513 62879 0 3 0x4000082 thrsleep syz-fuzzer 92568 310018 62879 0 3 0x4000082 thrsleep syz-fuzzer 92568 257067 62879 0 3 0x4000082 thrsleep syz-fuzzer 92568 105794 62879 0 3 0x4000082 kqread syz-fuzzer 92568 310161 62879 0 3 0x4000082 thrsleep syz-fuzzer 92568 198194 62879 0 3 0x4000082 thrsleep syz-fuzzer 62879 447017 59241 0 3 0x10008a pause ksh 59241 424407 50940 0 3 0x92 select sshd 38329 443628 1 0 3 0x100083 ttyin getty 50940 120717 1 0 3 0x80 select sshd 9578 156139 88115 73 3 0x100090 kqread syslogd 88115 444615 1 0 3 0x100082 netio syslogd 96493 202332 1 77 2 0x100010 dhclient *37303 365072 1 0 7 0 dhclient 84180 204934 0 0 2 0x14200 zerothread 50712 263241 0 0 3 0x14200 aiodoned aiodoned 23010 354148 0 0 3 0x14200 syncer update 572 501112 0 0 3 0x14200 cleaner cleaner 99471 379036 0 0 3 0x14200 reaper reaper 50957 411735 0 0 3 0x14200 pgdaemon pagedaemon 12505 136013 0 0 3 0x14200 bored crynlk 28358 464516 0 0 3 0x14200 bored crypto 76843 109699 0 0 3 0x40014200 acpi0 acpi0 99842 311750 0 0 2 0x14200 softnet 87984 395495 0 0 3 0x14200 bored systqmp 80191 389602 0 0 3 0x14200 bored systq 24381 502108 0 0 3 0x40014200 bored softclock 10565 321180 0 0 3 0x40014200 idle0 64141 302791 0 0 3 0x14200 bored smr 1 522464 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 9499 6351K 6844K 78643K 11159 0 pcb 13 8K 8K 78643K 55 0 rtable 97 2K 3K 78643K 390 0 ifaddr 69 13K 13K 78643K 140 0 counters 22 16K 17K 78643K 31 0 ioctlops 0 0K 2K 78643K 26 0 iov 0 0K 12K 78643K 36 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1420 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 47 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 264 0 sigio 0 0K 0K 78643K 9 0 proc 51 38K 63K 78643K 435 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 39 0 in_multi 29 1K 2K 78643K 132 0 ether_multi 1 0K 0K 78643K 10 0 mrt 0 0K 0K 78643K 9 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 219 0 pfkey data 0 0K 1K 78643K 2 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 103 37K 38K 78643K 1450 0 UVM aobj 25 6K 6K 78643K 29 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 40 0 NDP 12 0K 0K 78643K 28 0 temp 131 3025K 3089K 78643K 16195 0 kqueue 3 4K 12K 78643K 29 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 9 0 3 1 0 1 1 0 8 0 rtpcb 80 31 0 29 1 0 1 1 0 8 0 rtentry 112 100 0 60 2 0 2 2 0 8 0 unpcb 120 169 0 161 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 tcpqe 32 9 0 9 2 2 0 1 0 8 0 tcpcb 544 119 0 114 1 0 1 1 0 8 0 ipq 40 5 0 5 1 0 1 1 0 8 1 ipqe 40 225 0 225 1 0 1 1 0 8 1 inpcb 280 353 0 345 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 0 1 1 0 8 1 nd6 48 10 0 7 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 548 0 376 13 0 13 13 0 8 0 art_table 32 549 0 376 2 0 2 2 0 8 0 art_node 16 97 0 60 1 0 1 1 0 8 0 sysvmsgpl 40 27 0 24 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 45 0 35 1 0 1 1 0 8 0 shmpl 112 27 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1757 0 359 46 0 46 46 0 8 0 ffsino 240 1757 0 359 83 0 83 83 0 8 0 nchpl 144 2406 0 807 60 0 60 60 0 8 0 uvmvnodes 72 1954 0 0 36 0 36 36 0 8 0 vnodes 208 1954 0 0 103 0 103 103 0 8 0 namei 1024 6551 0 6551 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 scxspl 192 6811 0 6811 1 0 1 1 0 8 1 plimitpl 152 31 0 24 1 0 1 1 0 8 0 sigapl 432 432 0 419 2 0 2 2 0 8 0 futexpl 56 7066 0 7066 1 0 1 1 0 8 1 knotepl 112 107 0 88 1 0 1 1 0 8 0 kqueuepl 144 471 0 469 1 0 1 1 0 8 0 pipelkpl 16 145 0 135 1 0 1 1 0 8 0 pipepl 120 290 0 271 2 0 2 2 0 8 1 fdescpl 432 433 0 419 2 0 2 2 0 8 0 filepl 120 3449 0 3353 5 0 5 5 0 8 2 lockfpl 104 94 0 93 1 0 1 1 0 8 0 lockfspl 48 37 0 36 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 96 224 0 217 1 0 1 1 0 8 0 zombiepl 144 419 0 418 1 0 1 1 0 8 0 processpl 896 448 0 418 4 0 4 4 0 8 0 procpl 624 728 0 690 4 0 4 4 0 8 1 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 557 0 539 4 0 4 4 0 8 2 mcl64k 65536 29 0 29 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 5 0 5 1 0 1 1 0 8 1 mcl9k 9216 8 0 8 1 0 1 1 0 8 1 mcl8k 8192 17 0 17 1 0 1 1 0 8 1 mcl4k 4096 29 0 29 2 1 1 1 0 8 1 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 62927 0 62883 14 7 7 12 0 8 1 mtagpl 80 40 0 12 2 1 1 1 0 8 0 mbufpl 256 103081 0 102943 28 10 18 23 0 8 2 bufpl 280 4498 0 163 310 0 310 310 0 8 0 anonpl 16 55151 0 38956 69 2 67 67 0 107 0 amapchunkpl 152 2081 0 1950 12 2 10 11 0 158 4 amappl16 192 1996 0 1093 48 0 48 48 0 8 2 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 67 0 64 2 1 1 1 0 8 0 amappl13 168 29 0 28 1 0 1 1 0 8 0 amappl12 160 20 0 19 2 1 1 1 0 8 0 amappl11 152 222 0 209 1 0 1 1 0 8 0 amappl10 144 13 0 9 1 0 1 1 0 8 0 amappl9 136 383 0 379 1 0 1 1 0 8 0 amappl8 128 290 0 269 1 0 1 1 0 8 0 amappl7 120 114 0 102 1 0 1 1 0 8 0 amappl6 112 167 0 165 1 0 1 1 0 8 0 amappl5 104 298 0 288 1 0 1 1 0 8 0 amappl4 96 520 0 488 1 0 1 1 0 8 0 amappl3 88 185 0 178 1 0 1 1 0 8 0 amappl2 80 2606 0 2543 3 1 2 3 0 8 0 amappl1 72 17506 0 17097 27 18 9 20 0 8 0 amappl 80 965 0 923 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 28 0 4 1 0 1 1 0 8 0 uaddrrnd 24 435 0 419 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 435 0 419 1 0 1 1 0 8 0 vmmpekpl 168 6705 0 6677 2 0 2 2 0 8 0 vmmpepl 168 58519 0 56569 127 10 117 119 0 357 29 vmsppl 272 434 0 419 2 0 2 2 0 8 0 pdppl 4096 876 0 840 6 1 5 6 0 8 0 pvpl 32 180145 0 160968 162 0 162 162 0 265 5 pmappl 200 434 0 419 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 167 0 21 5 0 5 5 0 8 0