login: panic: receive 3: so 0xfffffd8066756320, so_type 3, m 0xfffffd806bc23800, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *377488 61924 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(fffffd8066756320,0,ffff80001d6e5c48,0,0,ffff80001d6e5b54) at soreceive+0x16e7 soo_read(fffffd80669f8258,ffff80001d6e5c48,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6aa118,6,ffff80001d6e5c48,0,ffff80001d6e5d30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6aa118,ffff80001d6e5ce0,ffff80001d6e5d30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5db0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe5190, 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 0xfffffd8066756320, so_type 3, m 0xfffffd806bc23800, 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(fffffd8066756320,0,ffff80001d6e5c48,0,0,ffff80001d6e5b54) at soreceive+0x16e7 soo_read(fffffd80669f8258,ffff80001d6e5c48,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6aa118,6,ffff80001d6e5c48,0,ffff80001d6e5d30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6aa118,ffff80001d6e5ce0,ffff80001d6e5d30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5db0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe5190, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d6e5990 rbx 0xffff80001d6e5a40 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff8185515f kprintf+0x15f r9 0x1 r10 0x2 r11 0x71f53f1b11093304 r12 0x3000000008 r13 0xffff80001d6e59a0 r14 0x100 r15 0x1 rip 0xffffffff81fef208 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d6e5980 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=377488 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a9278,0xffff80001d6aa398 process=0xffff80001d6c4010 user=0xffff80001d6e0000, vmspace=0xfffffd806bc0a220 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 14361 247873 47489 0 2 0 syz-executor.0 14361 357469 47489 0 2 0x4000000 syz-executor.0 68926 217868 46918 0 2 0x10 syz-executor.1 68926 422307 46918 0 2 0x4000010 syz-executor.1 65315 443812 1 0 3 0x82 nanosleep getty 46918 480592 36367 0 3 0x82 nanosleep syz-executor.1 47489 329617 36367 0 3 0x82 nanosleep syz-executor.0 36367 394736 85851 0 3 0x82 thrsleep syz-fuzzer 36367 353899 85851 0 3 0x4000082 thrsleep syz-fuzzer 36367 182533 85851 0 3 0x4000082 thrsleep syz-fuzzer 36367 365060 85851 0 3 0x4000082 thrsleep syz-fuzzer 36367 258162 85851 0 3 0x4000082 kqread syz-fuzzer 36367 294657 85851 0 3 0x4000082 thrsleep syz-fuzzer 36367 489301 85851 0 3 0x4000082 thrsleep syz-fuzzer 85851 104256 47131 0 3 0x10008a pause ksh 47131 279266 40267 0 3 0x92 select sshd 40267 75800 1 0 3 0x80 select sshd 93346 174560 11782 73 3 0x100090 kqread syslogd 11782 125799 1 0 3 0x100082 netio syslogd 14226 384889 1 77 2 0x100010 dhclient *61924 377488 1 0 7 0 dhclient 32032 89016 0 0 3 0x14200 bored smr 89047 83399 0 0 2 0x14200 zerothread 90976 263900 0 0 3 0x14200 aiodoned aiodoned 93566 191092 0 0 3 0x14200 syncer update 4593 288162 0 0 3 0x14200 cleaner cleaner 58669 260812 0 0 3 0x14200 reaper reaper 35858 469077 0 0 3 0x14200 pgdaemon pagedaemon 47174 204510 0 0 3 0x14200 bored crynlk 70656 284116 0 0 3 0x14200 bored crypto 32356 448698 0 0 3 0x40014200 acpi0 acpi0 86934 181081 0 0 2 0x14200 softnet 61287 245622 0 0 3 0x14200 bored systqmp 46779 274413 0 0 3 0x14200 bored systq 3227 107651 0 0 3 0x40014200 bored softclock 20858 277291 0 0 3 0x40014200 idle0 1 194770 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 9457 6326K 6840K 78643K 10682 0 pcb 13 8K 8K 78643K 31 0 rtable 109 3K 3K 78643K 205 0 ifaddr 45 10K 10K 78643K 52 0 counters 22 16K 16K 78643K 22 0 ioctlops 0 0K 2K 78643K 23 0 iov 0 0K 0K 78643K 4 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1254 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 12 1K 1K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 6 17K 25K 78643K 72 0 sigio 0 0K 0K 78643K 2 0 proc 48 38K 54K 78643K 375 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 26 0 in_multi 37 2K 2K 78643K 49 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 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 182 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 127 23K 23K 78643K 1023 0 UVM aobj 5 2K 2K 78643K 5 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 6 0K 0K 78643K 14 0 temp 69 3848K 3912K 78643K 1891 0 kqueue 3 4K 4K 78643K 3 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 25 0 23 1 0 1 1 0 8 0 rtentry 112 51 0 5 2 0 2 2 0 8 0 unpcb 120 53 0 45 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 317 0 317 1 1 0 1 0 8 0 tcpcb 544 26 0 22 1 0 1 1 0 8 0 inpcb 296 82 0 75 2 1 1 2 0 8 0 nd6 48 10 0 3 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 188 0 0 12 0 12 12 0 8 0 art_table 32 189 0 0 2 0 2 2 0 8 0 art_node 16 50 0 9 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 10 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 dino2pl 256 1467 0 67 88 0 88 88 0 8 0 ffsino 240 1467 0 67 83 0 83 83 0 8 0 nchpl 144 1750 0 145 60 0 60 60 0 8 0 uvmvnodes 72 1538 0 0 28 0 28 28 0 8 0 vnodes 208 1538 0 0 81 0 81 81 0 8 0 namei 1024 4359 0 4358 2 1 1 1 0 8 0 scxspl 192 4819 0 4819 2 1 1 1 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 424 259 0 230 4 0 4 4 0 8 0 futexpl 56 870 0 870 2 1 1 1 0 8 1 knotepl 112 61 0 42 1 0 1 1 0 8 0 kqueuepl 144 10 0 8 1 0 1 1 0 8 0 pipepl 272 76 0 66 1 0 1 1 0 8 0 fdescpl 432 245 0 230 2 0 2 2 0 8 0 filepl 120 1283 0 1184 5 1 4 4 0 8 1 lockfpl 104 42 0 41 1 0 1 1 0 8 0 lockfspl 48 20 0 19 1 0 1 1 0 8 0 sessionpl 112 17 0 8 1 0 1 1 0 8 0 pgrppl 48 17 0 8 1 0 1 1 0 8 0 ucredpl 96 81 0 73 1 0 1 1 0 8 0 zombiepl 144 230 0 230 2 1 1 1 0 8 1 processpl 928 259 0 230 4 0 4 4 0 8 0 procpl 624 325 0 288 4 1 3 4 0 8 0 sockpl 400 160 0 143 4 1 3 3 0 8 1 mcl64k 65536 1 0 1 1 1 0 1 0 8 0 mcl16k 16384 3 0 3 1 1 0 1 0 8 0 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl4k 4096 13 0 13 3 2 1 1 0 8 1 mcl2k 2048 91158 0 91108 22 15 7 18 0 8 0 mtagpl 96 17 0 2 2 1 1 1 0 8 0 mbufpl 256 144527 0 144364 18 4 14 16 0 8 0 bufpl 280 3317 0 125 228 0 228 228 0 8 0 anonpl 16 39029 0 23469 65 2 63 63 0 107 0 amapchunkpl 152 1127 0 992 7 0 7 7 0 158 0 amappl16 192 1082 0 232 43 0 43 43 0 8 0 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 63 0 56 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 9 0 6 1 0 1 1 0 8 0 amappl11 152 69 0 58 1 0 1 1 0 8 0 amappl10 144 13 0 9 1 0 1 1 0 8 0 amappl9 136 383 0 380 1 0 1 1 0 8 0 amappl8 128 322 0 281 2 0 2 2 0 8 0 amappl7 120 109 0 96 1 0 1 1 0 8 0 amappl6 112 23 0 18 1 0 1 1 0 8 0 amappl5 104 159 0 147 1 0 1 1 0 8 0 amappl4 96 448 0 419 1 0 1 1 0 8 0 amappl3 88 139 0 130 1 0 1 1 0 8 0 amappl2 80 1135 0 1061 2 0 2 2 0 8 0 amappl1 72 14681 0 14245 23 13 10 17 0 8 0 amappl 80 548 0 505 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 245 0 230 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 245 0 230 1 0 1 1 0 8 0 vmmpekpl 168 5865 0 5839 2 0 2 2 0 8 0 vmmpepl 168 37770 0 35706 124 34 90 119 0 357 0 vmsppl 272 244 0 230 2 1 1 2 0 8 0 pdppl 4096 496 0 460 6 1 5 6 0 8 0 pvpl 32 133461 0 114845 152 1 151 152 0 265 0 pmappl 200 244 0 230 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 254 0 30 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(fffffd8066756320,0,ffff80001d6e5c48,0,0,ffff80001d6e5b54) at soreceive+0x16e7 soo_read(fffffd80669f8258,ffff80001d6e5c48,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6aa118,6,ffff80001d6e5c48,0,ffff80001d6e5d30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6aa118,ffff80001d6e5ce0,ffff80001d6e5d30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5db0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe5190, 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(fffffd8066756320,0,ffff80001d6e5c48,0,0,ffff80001d6e5b54) at soreceive+0x16e7 soo_read(fffffd80669f8258,ffff80001d6e5c48,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d6aa118,6,ffff80001d6e5c48,0,ffff80001d6e5d30) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d6aa118,ffff80001d6e5ce0,ffff80001d6e5d30) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001d6e5db0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe5190, count: -8