login: panic: receive 3: so 0xfffffd806b637000, so_type 3, m 0xfffffd8067d2a500, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *329361 53709 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823bf400) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806b637000,0,ffff80001d6e5658,0,0,ffff80001d6e5564) at soreceive+0x16e7 soo_read(fffffd8066bf8618,ffff80001d6e5658,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9ea8,6,ffff80001d6e5658,0,ffff80001d6e5740) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9ea8,ffff80001d6e56f0,ffff80001d6e5740) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e57c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3a30, 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 0xfffffd806b637000, so_type 3, m 0xfffffd8067d2a500, m_type 0 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823bf400) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806b637000,0,ffff80001d6e5658,0,0,ffff80001d6e5564) at soreceive+0x16e7 soo_read(fffffd8066bf8618,ffff80001d6e5658,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9ea8,6,ffff80001d6e5658,0,ffff80001d6e5740) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9ea8,ffff80001d6e56f0,ffff80001d6e5740) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e57c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3a30, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d6e53a0 rbx 0xffff80001d6e5450 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff8185515f kprintf+0x15f r9 0x1 r10 0x2 r11 0x7f8bf5dafe6f4bda r12 0x3000000008 r13 0xffff80001d6e53b0 r14 0x100 r15 0x1 rip 0xffffffff81fef208 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d6e5390 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=329361 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a94e8,0xffff80001d6aa128 process=0xffff80001d6c4af0 user=0xffff80001d6e0000, vmspace=0xfffffd806bc0a770 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 53901 259404 34464 0 2 0 syz-executor.0 53901 144472 34464 0 2 0x4000000 syz-executor.0 4195 41515 0 0 3 0x14200 bored sosplice 34464 78917 11654 0 3 0x82 nanosleep syz-executor.0 39727 231764 11654 0 3 0x82 nanosleep syz-executor.1 11654 206269 43476 0 3 0x82 thrsleep syz-fuzzer 11654 390939 43476 0 3 0x4000082 thrsleep syz-fuzzer 11654 362814 43476 0 3 0x4000082 kqread syz-fuzzer 11654 407430 43476 0 3 0x4000082 thrsleep syz-fuzzer 11654 67969 43476 0 3 0x4000082 thrsleep syz-fuzzer 11654 384340 43476 0 3 0x4000082 thrsleep syz-fuzzer 11654 186153 43476 0 3 0x4000082 thrsleep syz-fuzzer 11654 121329 43476 0 3 0x4000082 thrsleep syz-fuzzer 43476 127436 73736 0 3 0x10008a pause ksh 73736 404563 5718 0 3 0x92 select sshd 93674 498985 1 0 3 0x100083 ttyin getty 5718 361136 1 0 3 0x80 select sshd 16165 460712 78935 73 3 0x100090 kqread syslogd 78935 506820 1 0 3 0x100082 netio syslogd 97380 491784 1 77 2 0x100010 dhclient *53709 329361 1 0 7 0 dhclient 5725 213719 0 0 3 0x14200 bored smr 45596 173262 0 0 2 0x14200 zerothread 86663 167480 0 0 3 0x14200 aiodoned aiodoned 8307 114363 0 0 3 0x14200 syncer update 58903 258225 0 0 3 0x14200 cleaner cleaner 71693 139927 0 0 3 0x14200 reaper reaper 96225 276045 0 0 3 0x14200 pgdaemon pagedaemon 972 394012 0 0 3 0x14200 bored crynlk 3416 267090 0 0 3 0x14200 bored crypto 84480 466921 0 0 3 0x40014200 acpi0 acpi0 80668 297746 0 0 3 0x14200 bored softnet 33207 180113 0 0 3 0x14200 bored systqmp 23352 246290 0 0 3 0x14200 bored systq 75354 405531 0 0 3 0x40014200 bored softclock 40308 451347 0 0 3 0x40014200 idle0 1 517660 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 9487 6461K 6589K 78643K 10807 0 pcb 13 8K 8K 78643K 45 0 rtable 103 11K 11K 78643K 279 0 ifaddr 57 12K 12K 78643K 96 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 4K 78643K 41 0 iov 0 0K 12K 78643K 10 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1309 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 23 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 170 0 proc 50 38K 54K 78643K 368 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 8 0 in_multi 49 2K 2K 78643K 90 0 ether_multi 1 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 193 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 134 56K 56K 78643K 1240 0 UVM aobj 11 2K 2K 78643K 11 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 20 0 NDP 8 0K 0K 78643K 19 0 temp 81 3849K 3914K 78643K 2183 0 kqueue 3 4K 6K 78643K 9 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 0 1 0 1 1 0 8 0 rtpcb 80 27 0 25 1 0 1 1 0 8 0 rtentry 112 59 0 18 2 0 2 2 0 8 0 unpcb 120 77 0 69 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 60 0 60 1 1 0 1 0 8 0 tcpcb 544 58 0 54 1 0 1 1 0 8 0 inpcb 296 259 0 251 5 3 2 2 0 8 1 nd6 48 11 0 7 1 0 1 1 0 8 0 pfrktable 1344 8 0 8 1 1 0 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfrule 1360 4 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 260 0 88 13 0 13 13 0 8 0 art_table 32 261 0 88 2 0 2 2 0 8 0 art_node 16 58 0 20 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1616 0 216 88 0 88 88 0 8 0 ffsino 240 1616 0 216 83 0 83 83 0 8 0 nchpl 144 2050 0 445 60 0 60 60 0 8 0 uvmvnodes 72 1716 0 0 32 0 32 32 0 8 0 vnodes 208 1716 0 0 91 0 91 91 0 8 0 namei 1024 5453 0 5453 4 3 1 1 0 8 1 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 528 3 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 scxspl 192 5914 0 5914 1 0 1 1 0 8 1 plimitpl 152 25 0 18 1 0 1 1 0 8 0 sigapl 424 357 0 328 4 0 4 4 0 8 0 futexpl 56 2994 0 2994 4 3 1 1 0 8 1 knotepl 112 65 0 46 1 0 1 1 0 8 0 kqueuepl 144 22 0 20 1 0 1 1 0 8 0 pipepl 272 86 0 76 1 0 1 1 0 8 0 fdescpl 432 342 0 328 2 0 2 2 0 8 0 filepl 120 2093 0 1996 4 0 4 4 0 8 1 lockfpl 104 48 0 47 1 0 1 1 0 8 0 lockfspl 48 19 0 18 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 96 400 0 393 1 0 1 1 0 8 0 zombiepl 144 328 0 327 1 0 1 1 0 8 0 processpl 928 357 0 327 4 0 4 4 0 8 0 procpl 624 536 0 498 7 3 4 4 0 8 1 sosppl 128 8 0 8 2 1 1 1 0 8 1 sockpl 400 363 0 345 7 4 3 4 0 8 1 mcl64k 65536 6 0 6 2 2 0 1 0 8 0 mcl12k 12288 3 0 3 3 3 0 1 0 8 0 mcl9k 9216 4 0 4 3 2 1 1 0 8 1 mcl8k 8192 7 0 7 3 3 0 1 0 8 0 mcl4k 4096 20 0 20 5 4 1 1 0 8 1 mcl2k 2048 89678 0 89629 17 10 7 14 0 8 0 mtagpl 96 15 0 2 2 1 1 1 0 8 0 mbufpl 256 142751 0 142580 22 6 16 16 0 8 2 bufpl 280 3515 0 126 243 0 243 243 0 8 0 anonpl 16 46785 0 30068 72 3 69 69 0 107 1 amapchunkpl 152 1403 0 1271 8 2 6 8 0 158 0 amappl16 192 1558 0 629 48 0 48 48 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 93 0 86 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 82 0 80 2 1 1 1 0 8 0 amappl11 152 118 0 106 1 0 1 1 0 8 0 amappl10 144 11 0 7 1 0 1 1 0 8 0 amappl9 136 373 0 371 1 0 1 1 0 8 0 amappl8 128 330 0 289 2 0 2 2 0 8 0 amappl7 120 108 0 95 1 0 1 1 0 8 0 amappl6 112 91 0 82 1 0 1 1 0 8 0 amappl5 104 289 0 279 1 0 1 1 0 8 0 amappl4 96 485 0 456 1 0 1 1 0 8 0 amappl3 88 107 0 101 1 0 1 1 0 8 0 amappl2 80 1915 0 1853 2 0 2 2 0 8 0 amappl1 72 16786 0 16367 23 14 9 17 0 8 0 amappl 80 758 0 715 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 10 0 0 1 0 1 1 0 8 0 uaddrrnd 24 345 0 328 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 345 0 328 1 0 1 1 0 8 0 vmmpekpl 168 6350 0 6321 2 0 2 2 0 8 0 vmmpepl 168 48889 0 46858 125 30 95 116 0 357 1 vmsppl 272 344 0 328 3 1 2 2 0 8 0 pdppl 4096 696 0 659 7 2 5 6 0 8 0 pvpl 32 154361 0 134668 167 3 164 164 0 265 3 pmappl 200 344 0 328 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 270 0 40 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823bf400) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806b637000,0,ffff80001d6e5658,0,0,ffff80001d6e5564) at soreceive+0x16e7 soo_read(fffffd8066bf8618,ffff80001d6e5658,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9ea8,6,ffff80001d6e5658,0,ffff80001d6e5740) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9ea8,ffff80001d6e56f0,ffff80001d6e5740) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e57c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3a30, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823bf400) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806b637000,0,ffff80001d6e5658,0,0,ffff80001d6e5564) at soreceive+0x16e7 soo_read(fffffd8066bf8618,ffff80001d6e5658,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6a9ea8,6,ffff80001d6e5658,0,ffff80001d6e5740) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6a9ea8,ffff80001d6e56f0,ffff80001d6e5740) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e57c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3a30, count: -8