panic: receive 3: so 0xfffffd806f6d5300, so_type 3, m 0xfffffd8072d09900, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *204171 38689 0 0 0 1K dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6d5300,0,ffff800020aa55b8,0,0,ffff800020aa54c4) at soreceive+0x1727 soo_read(fffffd80773ef1c8,ffff800020aa55b8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a5ec60,6,ffff800020aa55b8,0,ffff800020aa56a0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff800020a5ec60,ffff800020aa5650,ffff800020aa56a0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff800020aa5720) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020aa5720) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8980, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic receive 3: so 0xfffffd806f6d5300, so_type 3, m 0xfffffd8072d09900, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6d5300,0,ffff800020aa55b8,0,0,ffff800020aa54c4) at soreceive+0x1727 soo_read(fffffd80773ef1c8,ffff800020aa55b8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a5ec60,6,ffff800020aa55b8,0,ffff800020aa56a0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:236 sys_read(ffff800020a5ec60,ffff800020aa5650,ffff800020aa56a0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff800020aa5720) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020aa5720) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff8980, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020aa5300 rbx 0xffff800020aa53b0 rdx 0xffff800020a5ec60 rcx 0 rax 0 r8 0xffffffff820f047f kprintf+0x16f r9 0x1 r10 0x25 r11 0xb19a8f79105858f0 r12 0x3000000008 r13 0xffff800020aa5310 r14 0x100 r15 0x1 rip 0xffffffff812479b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020aa52f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=204171 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a5e4f8,0xffff800020a5f160 process=0xffff800020a8a390 user=0xffff800020aa0000, vmspace=0xfffffd807f00b2e0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54937 172825 33080 0 3 0x82 nanosleep syz-executor.1 58420 425079 33080 0 3 0x82 nanosleep syz-executor.0 69725 321890 1 0 3 0x100083 ttyin getty 39854 349124 0 0 3 0x14200 acct acct 61379 50164 0 0 3 0x14200 bored sosplice 33080 11701 89703 0 3 0x82 thrsleep syz-fuzzer 33080 62496 89703 0 3 0x4000082 thrsleep syz-fuzzer 33080 1510 89703 0 3 0x4000082 thrsleep syz-fuzzer 33080 347536 89703 0 3 0x4000082 thrsleep syz-fuzzer 33080 364675 89703 0 3 0x4000082 thrsleep syz-fuzzer 33080 514954 89703 0 3 0x4000082 thrsleep syz-fuzzer 33080 506782 89703 0 3 0x4000082 thrsleep syz-fuzzer 33080 329398 89703 0 3 0x4000082 thrsleep syz-fuzzer 33080 256851 89703 0 3 0x4000082 kqread syz-fuzzer 33080 429739 89703 0 3 0x4000082 thrsleep syz-fuzzer 33080 424362 89703 0 3 0x4000082 thrsleep syz-fuzzer 89703 435193 88912 0 3 0x10008a pause ksh 88912 474699 75204 0 3 0x92 select sshd 75204 208524 1 0 3 0x80 select sshd 81392 422960 25688 74 3 0x100092 bpf pflogd 25688 101045 1 0 3 0x80 netio pflogd 66897 468891 65697 73 3 0x100090 kqread syslogd 65697 503799 1 0 3 0x100082 netio syslogd 32471 493925 1 77 3 0x100090 poll dhclient *38689 204171 1 0 7 0 dhclient 98065 300508 0 0 3 0x14200 pgzero zerothread 19419 117041 0 0 3 0x14200 aiodoned aiodoned 9130 467019 0 0 3 0x14200 syncer update 67954 261513 0 0 3 0x14200 cleaner cleaner 72412 189521 0 0 3 0x14200 reaper reaper 8887 352704 0 0 3 0x14200 pgdaemon pagedaemon 3231 432470 0 0 3 0x14200 bored crynlk 68872 415984 0 0 3 0x14200 bored crypto 72415 208315 0 0 3 0x40014200 acpi0 acpi0 21563 103735 0 0 3 0x40014200 idle1 51764 521083 0 0 3 0x14200 bored softnet 36858 260925 0 0 3 0x14200 bored systqmp 22513 62911 0 0 3 0x14200 bored systq 47354 344215 0 0 3 0x40014200 bored softclock 15311 28605 0 0 3 0x40014200 idle0 80247 393521 0 0 3 0x14200 bored smr 1 362625 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 38689 (dhclient) thread 0xffff800020a5ec60 (204171) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82634088) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 soreceive+0x114 sys/kern/uipc_socket.c:706 #3 soo_read+0x53 sys/kern/sys_socket.c:70 #4 dofilereadv+0x1a2 sys/kern/sys_generic.c:236 #5 sys_read+0x83 sys/kern/sys_generic.c:156 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9594 7226K 10970K 78643K 61413 0 0 pcb 13 10K 12K 78643K 1921 0 0 rtable 118 13K 13K 78643K 3375 0 0 ifaddr 302 34K 35K 78643K 1190 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1750 0 0 iov 0 0K 24K 78643K 3194 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1222 77K 78K 78643K 18477 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 69 0 0 VM map 50 25K 25K 78643K 77 0 0 sem 12 1K 1K 78643K 244 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 9308 0 0 sigio 0 0K 0K 78643K 96 0 0 proc 62 63K 95K 78643K 2639 0 0 subproc 32 2K 2K 78643K 731 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 1K 78643K 634 0 0 in_multi 80 4K 4K 78643K 717 0 0 ether_multi 1 0K 0K 78643K 59 0 0 mrt 0 0K 0K 78643K 25 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 114 503K 503K 78643K 114 0 0 exec 0 0K 1K 78643K 1131 0 0 pfkey data 0 0K 0K 78643K 2 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 230 400K 401K 78643K 28757 0 0 UVM aobj 130 5K 5K 78643K 133 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 1802 0 0 NDP 22 0K 0K 78643K 294 0 0 temp 178 3556K 4195K 78643K 179724 0 0 kqueue 0 0K 0K 78643K 58 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 136 0 129 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 400 0 398 1 0 1 1 0 8 0 rtentry 112 611 0 568 2 0 2 2 0 8 0 unpcb 120 25335 0 25322 21 20 1 2 0 8 0 syncache 264 22 0 22 11 11 0 1 0 8 0 tcpqe 32 206 0 206 5 5 0 1 0 8 0 tcpcb 544 4323 0 4318 64 62 2 14 0 8 1 inpcb 280 13108 0 13098 60 54 6 9 0 8 5 rttmr 72 6 0 6 6 6 0 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 1 0 1 1 1 0 1 0 8 0 nd6 48 89 0 86 2 1 1 1 0 8 0 pkpcb 40 40 0 40 13 13 0 1 0 8 0 ppxss 1128 121 0 121 21 20 1 1 0 8 1 pffrag 232 120 0 120 19 19 0 1 0 482 0 pffrnode 88 120 0 120 19 19 0 1 0 8 0 pffrent 40 4066 0 4066 19 19 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 441 0 368 1 0 1 1 0 8 0 pfstkey 112 441 0 368 4 1 3 3 0 8 0 pfstate 328 441 0 368 9 2 7 7 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 12 0 11 5 4 1 3 0 8 0 art_heap4 256 2564 0 2355 35 20 15 16 0 8 0 art_table 32 2576 0 2366 3 1 2 3 0 8 0 art_node 16 610 0 570 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 36 1 1 0 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 240 0 230 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 21584 0 20136 47 0 47 47 0 8 0 ffsino 272 21584 0 20136 97 0 97 97 0 8 0 nchpl 144 36060 0 35559 61 41 20 61 0 8 0 uvmvnodes 72 6451 0 0 118 0 118 118 0 8 0 vnodes 208 6451 0 0 340 0 340 340 0 8 0 namei 1024 140820 0 140820 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 50 0 2 6 0 6 6 0 8 0 vmpool 552 75 0 27 5 1 4 4 0 8 0 scsiplug 64 3 0 3 2 2 0 1 0 8 0 scxspl 192 102991 0 102991 43 42 1 7 0 8 1 plimitpl 152 396 0 388 1 0 1 1 0 8 0 sigapl 432 9387 0 9372 3 1 2 3 0 8 0 futexpl 56 350946 0 350946 2 1 1 1 0 8 1 knotepl 112 1224 0 1205 5 4 1 3 0 8 0 kqueuepl 104 2551 0 2549 16 15 1 4 0 8 0 pipepl 160 4126 0 4107 17 16 1 2 0 8 0 fdescpl 488 9388 0 9372 3 0 3 3 0 8 0 filepl 152 116036 0 115935 69 62 7 14 0 8 3 lockfpl 104 4036 0 4035 1 0 1 1 0 8 0 lockfspl 48 1603 0 1602 1 0 1 1 0 8 0 sessionpl 112 63 0 52 1 0 1 1 0 8 0 pgrppl 48 96 0 85 1 0 1 1 0 8 0 ucredpl 96 13087 0 13077 1 0 1 1 0 8 0 zombiepl 144 9375 0 9373 2 1 1 1 0 8 0 processpl 896 9407 0 9373 4 0 4 4 0 8 0 procpl 632 25723 0 25679 8 3 5 5 0 8 1 srpgc 64 68 0 68 21 21 0 1 0 8 0 sosppl 128 201 0 201 21 20 1 1 0 8 1 sockpl 384 39004 0 38981 97 87 10 14 0 8 6 mcl64k 65536 332 0 0 38 9 29 34 0 8 0 mcl16k 16384 29 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 49 0 0 5 2 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 15 0 0 1 0 1 1 0 8 0 mcl2k 2048 311 0 0 26 14 12 26 0 8 0 mtagpl 80 140 0 0 2 1 1 2 0 8 0 mbufpl 256 891 0 0 34 0 34 34 0 8 0 bufpl 256 32135 0 24790 460 0 460 460 0 8 0 anonpl 16 952804 0 929197 233 132 101 109 0 124 4 amapchunkpl 152 55533 0 55348 93 81 12 21 0 158 2 amappl16 192 45385 0 44074 257 184 73 77 0 8 7 amappl15 184 1852 0 1852 5 5 0 1 0 8 0 amappl14 176 2211 0 2202 1 0 1 1 0 8 0 amappl13 168 1336 0 1336 6 6 0 1 0 8 0 amappl12 160 1387 0 1386 2 1 1 1 0 8 0 amappl11 152 604 0 588 1 0 1 1 0 8 0 amappl10 144 1754 0 1748 1 0 1 1 0 8 0 amappl9 136 1692 0 1689 1 0 1 1 0 8 0 amappl8 128 1287 0 1216 4 1 3 3 0 8 0 amappl7 120 1949 0 1939 1 0 1 1 0 8 0 amappl6 112 525 0 512 1 0 1 1 0 8 0 amappl5 104 1876 0 1862 1 0 1 1 0 8 0 amappl4 96 9745 0 9710 1 0 1 1 0 8 0 amappl3 88 5179 0 5163 1 0 1 1 0 8 0 amappl2 80 73195 0 73116 3 1 2 3 0 8 0 amappl1 72 193924 0 193483 26 16 10 20 0 8 0 amappl 80 26788 0 26715 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 132 0 3 3 0 3 3 0 8 0 uaddrrnd 24 9463 0 9372 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9463 0 9372 1 0 1 1 0 8 0 vmmpekpl 168 66603 0 66561 3 0 3 3 0 8 0 vmmpepl 168 1163756 0 1161103 418 258 160 165 0 357 37 vmsppl 368 9387 0 9372 2 0 2 2 0 8 0 pdppl 4096 18933 0 18846 14 2 12 12 0 8 0 pvpl 32 2598086 0 2572917 462 234 228 247 0 265 19 pmappl 232 9462 0 9399 5 1 4 4 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 797 0 119 21 1 20 20 0 8 0