login: panic: receive 3: so 0xfffffd806f6dd000, so_type 3, m 0xfffffd806f338100, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *362303 49281 0 0 0 0K dhclient 420080 15235 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b6ec7) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6dd000,0,ffff800020abd888,0,0,ffff800020abd794) at soreceive+0x1727 soo_read(fffffd80775fb098,ffff800020abd888,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a7c008,6,ffff800020abd888,0,ffff800020abd970) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236 sys_read(ffff800020a7c008,ffff800020abd920,ffff800020abd970) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff800020abd9f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020abd9f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbf8f0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic receive 3: so 0xfffffd806f6dd000, so_type 3, m 0xfffffd806f338100, m_type 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b6ec7) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6dd000,0,ffff800020abd888,0,0,ffff800020abd794) at soreceive+0x1727 soo_read(fffffd80775fb098,ffff800020abd888,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a7c008,6,ffff800020abd888,0,ffff800020abd970) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236 sys_read(ffff800020a7c008,ffff800020abd920,ffff800020abd970) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff800020abd9f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020abd9f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbf8f0, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020abd5d0 rbx 0xffff800020abd680 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81ef114f kprintf+0x16f r9 0x1 r10 0x59db313994c7aaec r11 0xf35cba8c92fbef1d r12 0x3000000008 r13 0xffff800020abd5e0 r14 0x100 r15 0x1 rip 0xffffffff819deb08 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020abd5c0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhclient) pid=362303 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a7d388,0xffff800020a7c288 process=0xffff800020a903d0 user=0xffff800020ab8000, vmspace=0xfffffd807efff170 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 89699 420871 82839 0 3 0x82 wait syz-execprog 89699 234159 82839 0 3 0x4000082 thrsleep syz-execprog 89699 193275 82839 0 3 0x4000082 thrsleep syz-execprog 89699 135491 82839 0 3 0x4000082 thrsleep syz-execprog 89699 38750 82839 0 3 0x4000082 thrsleep syz-execprog 89699 149663 82839 0 3 0x4000082 thrsleep syz-execprog 89699 48987 82839 0 3 0x4000082 thrsleep syz-execprog 89699 65238 82839 0 3 0x4000082 kqread syz-execprog 89699 367270 82839 0 3 0x4000082 thrsleep syz-execprog 82839 77187 32526 0 3 0x10008a pause ksh 32526 161278 82450 0 3 0x92 select sshd 79706 112175 1 0 3 0x100083 ttyin getty 82450 342332 1 0 3 0x80 select sshd 30497 505864 96760 74 3 0x100092 bpf pflogd 96760 260188 1 0 3 0x80 netio pflogd 13383 146085 1566 73 3 0x100090 kqread syslogd 1566 248361 1 0 3 0x100082 netio syslogd 31181 180637 1 77 3 0x100090 poll dhclient *49281 362303 1 0 7 0 dhclient 84492 31985 0 0 3 0x14200 pgzero zerothread 82746 188980 0 0 3 0x14200 aiodoned aiodoned 92019 330594 0 0 3 0x14200 syncer update 14916 329178 0 0 3 0x14200 cleaner cleaner 15235 420080 0 0 7 0x14200 reaper 34410 312150 0 0 3 0x14200 pgdaemon pagedaemon 15281 228843 0 0 3 0x14200 bored crynlk 5469 457058 0 0 3 0x14200 bored crypto 2181 220953 0 0 3 0x40014200 acpi0 acpi0 95717 209281 0 0 3 0x40014200 idle1 88770 227388 0 0 3 0x14200 bored softnet 95362 35822 0 0 3 0x14200 bored systqmp 49193 156451 0 0 3 0x14200 bored systq 94425 431783 0 0 3 0x40014200 bored softclock 76960 247938 0 0 3 0x40014200 idle0 21362 402513 0 0 3 0x14200 bored smr 1 194355 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 49281 (dhclient) thread 0xffff800020a7c008 (362303) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826283f0) #0 witness_lock+0x52e sys/kern/subr_witness.c:1164 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 soreceive+0xb3a sys/kern/uipc_socket.c:950 #3 soo_read+0x53 sys/kern/sys_socket.c:70 #4 dofilereadv+0x1a1 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:102 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9461 6393K 6395K 78643K 10556 0 pcb 13 8K 8K 78643K 13 0 rtable 63 2K 2K 78643K 165 0 ifaddr 29 8K 9K 78643K 39 0 counters 39 33K 33K 78643K 41 0 ioctlops 0 0K 4K 78643K 1468 0 mount 1 1K 1K 78643K 1 0 vnodes 1181 74K 74K 78643K 1186 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 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 1 0K 12K 78643K 18 0 proc 59 63K 83K 78643K 398 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 197 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 79 12K 12K 78643K 976 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 4 0K 0K 78643K 7 0 temp 24 3005K 3069K 78643K 1937 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 plcache 128 20 0 0 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 29 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 34 0 28 1 0 1 1 0 8 0 nd6 48 2 0 2 1 0 1 1 0 8 1 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 10 0 2 1 0 1 1 0 8 0 pfstkey 112 10 0 2 1 0 1 1 0 8 0 pfstate 328 10 0 2 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 167 0 47 11 0 11 11 0 8 2 art_table 32 168 0 47 2 0 2 2 0 8 0 art_node 16 33 0 12 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1424 0 20 46 0 46 46 0 8 0 ffsino 272 1424 0 20 94 0 94 94 0 8 0 nchpl 144 1650 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1434 0 0 27 0 27 27 0 8 0 vnodes 208 1434 0 0 76 0 76 76 0 8 0 namei 1024 4157 0 4157 2 1 1 1 0 8 1 percpumem 16 31 0 1 1 0 1 1 0 8 0 scxspl 192 4660 0 4660 9 6 3 7 0 8 3 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 225 0 213 2 0 2 2 0 8 0 knotepl 112 39 0 30 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipelkpl 48 74 0 68 2 1 1 1 0 8 0 pipepl 120 148 0 139 2 1 1 1 0 8 0 fdescpl 496 226 0 213 3 0 3 3 0 8 0 filepl 152 1137 0 1084 3 0 3 3 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 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 52 0 43 1 0 1 1 0 8 0 zombiepl 144 213 0 212 2 1 1 1 0 8 0 processpl 960 241 0 212 5 0 5 5 0 8 1 procpl 624 249 0 212 3 0 3 3 0 8 0 sockpl 400 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 71 0 0 9 0 9 9 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 137 0 0 7 0 7 7 0 8 0 bufpl 280 3809 0 191 259 0 259 259 0 8 0 anonpl 16 22358 0 20751 15 2 13 13 0 125 6 amapchunkpl 152 770 0 703 5 0 5 5 0 158 1 amappl16 192 87 0 60 2 0 2 2 0 8 0 amappl15 184 60 0 55 1 0 1 1 0 8 0 amappl14 176 25 0 23 2 1 1 1 0 8 0 amappl12 160 13 0 10 2 1 1 1 0 8 0 amappl11 152 53 0 38 1 0 1 1 0 8 0 amappl10 144 16 0 14 1 0 1 1 0 8 0 amappl9 136 438 0 435 1 0 1 1 0 8 0 amappl8 128 90 0 80 1 0 1 1 0 8 0 amappl7 120 100 0 89 1 0 1 1 0 8 0 amappl6 112 58 0 53 1 0 1 1 0 8 0 amappl5 104 126 0 112 1 0 1 1 0 8 0 amappl4 96 494 0 466 1 0 1 1 0 8 0 amappl3 88 128 0 118 1 0 1 1 0 8 0 amappl2 80 949 0 888 4 1 3 3 0 8 1 amappl1 72 15498 0 15076 26 8 18 20 0 8 8 amappl 80 476 0 448 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 24 226 0 213 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 226 0 213 1 0 1 1 0 8 0 vmmpekpl 168 6238 0 6211 2 0 2 2 0 8 0 vmmpepl 168 33038 0 32101 95 14 81 81 0 357 38 vmsppl 368 225 0 212 2 0 2 2 0 8 0 pdppl 4096 459 0 424 6 0 6 6 0 8 1 pvpl 32 112699 0 108756 122 6 116 116 0 265 81 pmappl 232 225 0 212 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 146 0 4 5 0 5 5 0 8 0 ddb{0}>