panic: receive 1: so 0xfffffd805e553000, so_type 3, sb_cc 177 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *364020 8183 0 0 0 0 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821a6d4a) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e553000,0,ffff80001d382ce8,0,0,ffff80001d382bf4) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd805eb0b3c0,ffff80001d382ce8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d34a118,6,ffff80001d382ce8,0,ffff80001d382dd0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236 sys_read(ffff80001d34a118,ffff80001d382d80,ffff80001d382dd0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d382e50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffca310, 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 0xfffffd805e553000, so_type 3, sb_cc 177 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821a6d4a) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd805e553000,0,ffff80001d382ce8,0,0,ffff80001d382bf4) at soreceive+0x16ac sys/kern/uipc_socket.c:823 soo_read(fffffd805eb0b3c0,ffff80001d382ce8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff80001d34a118,6,ffff80001d382ce8,0,ffff80001d382dd0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236 sys_read(ffff80001d34a118,ffff80001d382d80,ffff80001d382dd0) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff80001d382e50) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffca310, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d382a30 rbx 0xffff80001d382ae0 rdx 0x2 rcx 0 rax 0 r8 0xffff80001d3829f0 r9 0x1 r10 0 r11 0xb9d094701ee2a79c r12 0x3000000008 r13 0xffff80001d382a40 r14 0x100 r15 0x1 rip 0xffffffff816b5468 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d382a20 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=364020 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d349008,0xffff80001d34a398 process=0xffff8000ffffa390 user=0xffff80001d37d000, vmspace=0xfffffd806bc09440 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 52135 436648 8488 0 2 0 syz-executor.0 52135 27550 8488 0 2 0x4000000 syz-executor.0 961 324365 69222 0 3 0x82 nanosleep syz-executor.1 8488 472673 69222 0 3 0x82 nanosleep syz-executor.0 91705 346969 0 0 3 0x14200 acct acct 56317 417183 0 0 3 0x14200 bored sosplice 69222 203519 4969 0 3 0x82 thrsleep syz-fuzzer 69222 501013 4969 0 3 0x4000082 thrsleep syz-fuzzer 69222 39972 4969 0 3 0x4000082 thrsleep syz-fuzzer 69222 413402 4969 0 3 0x4000082 thrsleep syz-fuzzer 69222 277060 4969 0 3 0x4000082 thrsleep syz-fuzzer 69222 129282 4969 0 3 0x4000082 kqread syz-fuzzer 69222 47149 4969 0 3 0x4000082 thrsleep syz-fuzzer 69222 288515 4969 0 3 0x4000082 thrsleep syz-fuzzer 69222 507876 4969 0 3 0x4000082 thrsleep syz-fuzzer 4969 20638 45830 0 3 0x10008a pause ksh 45830 356772 70009 0 3 0x92 select sshd 70387 56715 1 0 3 0x100083 ttyin getty 70009 228658 1 0 3 0x80 select sshd 58434 28918 35210 73 3 0x100090 kqread syslogd 35210 75067 1 0 3 0x100082 netio syslogd 15070 326563 1 77 2 0x100010 dhclient * 8183 364020 1 0 7 0 dhclient 75060 296417 0 0 2 0x14200 zerothread 85468 83004 0 0 3 0x14200 aiodoned aiodoned 26571 461432 0 0 3 0x14200 syncer update 52567 350444 0 0 3 0x14200 cleaner cleaner 51533 312645 0 0 3 0x14200 reaper reaper 43795 217628 0 0 3 0x14200 pgdaemon pagedaemon 65639 150638 0 0 3 0x14200 bored crynlk 25498 193922 0 0 3 0x14200 bored crypto 26897 306570 0 0 3 0x40014200 acpi0 acpi0 27356 198129 0 0 3 0x14200 bored softnet 12712 522994 0 0 2 0x14200 systqmp 38991 463117 0 0 3 0x14200 bored systq 57491 377181 0 0 3 0x40014200 bored softclock 82727 44935 0 0 3 0x40014200 idle0 66418 510908 0 0 3 0x14200 bored smr 1 433078 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 9548 6379K 6582K 78643K 11237 0 pcb 13 9K 10K 78643K 1196 0 rtable 116 4K 5K 78643K 1080 0 ifaddr 116 23K 23K 78643K 505 0 counters 21 16K 17K 78643K 87 0 ioctlops 0 0K 2K 78643K 103 0 iov 0 0K 16K 78643K 330 0 mount 1 1K 1K 78643K 1 0 vnodes 1213 76K 77K 78643K 1698 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 23 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 170 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 1416 0 sigio 0 0K 0K 78643K 34 0 proc 57 39K 63K 78643K 698 0 subproc 32 2K 2K 78643K 136 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 633 0 in_multi 148 7K 7K 78643K 480 0 ether_multi 1 0K 0K 78643K 60 0 mrt 0 0K 0K 78643K 15 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 1K 78643K 430 0 pfkey data 0 0K 1K 78643K 4 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 144 153K 153K 78643K 4415 0 UVM aobj 50 2K 2K 78643K 62 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 275 0 NDP 19 0K 0K 78643K 120 0 temp 155 3015K 3091K 78643K 52931 0 kqueue 3 4K 36K 78643K 376 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 19 0 13 1 0 1 1 0 8 0 rtpcb 80 168 0 166 1 0 1 1 0 8 0 rtentry 112 200 0 155 2 0 2 2 0 8 0 unpcb 120 2089 0 2080 7 6 1 2 0 8 0 syncache 264 22 0 22 7 6 1 1 0 8 1 tcpqe 32 319 0 319 4 4 0 1 0 8 0 tcpcb 544 1141 0 1135 4 3 1 2 0 8 0 ipq 40 10 0 10 5 5 0 1 0 8 0 ipqe 40 156 0 156 5 5 0 1 0 8 0 inpcb 280 3271 0 3262 10 8 2 4 0 8 1 rttmr 72 6 0 6 4 4 0 1 0 8 0 nd6 48 37 0 34 1 0 1 1 0 8 0 pkpcb 40 14 0 14 4 4 0 1 0 8 0 ppxss 1128 8 0 8 5 5 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1085 0 866 19 3 16 16 0 8 0 art_table 32 1087 0 866 2 0 2 2 0 8 0 art_node 16 199 0 154 1 0 1 1 0 8 0 sysvmsgpl 40 48 0 36 1 0 1 1 0 8 0 semapl 112 168 0 158 1 0 1 1 0 8 0 shmpl 112 60 0 12 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3569 0 2170 46 0 46 46 0 8 0 ffsino 240 3569 0 2170 83 0 83 83 0 8 0 nchpl 144 6164 0 4571 60 0 60 60 0 8 0 uvmvnodes 72 3782 0 0 69 0 69 69 0 8 0 vnodes 208 3782 0 0 200 0 200 200 0 8 0 namei 1024 20125 0 20125 4 3 1 1 0 8 1 vcpupl 1984 13 0 0 2 0 2 2 0 8 0 vmpool 528 19 0 6 1 0 1 1 0 8 0 scsiplug 64 3 0 3 3 3 0 1 0 8 0 scxspl 192 23386 0 23386 1 0 1 1 0 8 1 plimitpl 152 130 0 123 1 0 1 1 0 8 0 sigapl 432 1569 0 1556 2 0 2 2 0 8 0 futexpl 56 39795 0 39795 6 5 1 1 0 8 1 knotepl 112 1180 0 1161 5 4 1 3 0 8 0 kqueuepl 104 820 0 818 1 0 1 1 0 8 0 pipelkpl 16 473 0 463 1 0 1 1 0 8 0 pipepl 120 946 0 927 4 3 1 2 0 8 0 fdescpl 432 1570 0 1556 2 0 2 2 0 8 0 filepl 120 16248 0 16152 11 6 5 5 0 8 2 lockfpl 104 344 0 343 1 0 1 1 0 8 0 lockfspl 48 116 0 115 1 0 1 1 0 8 0 sessionpl 112 23 0 13 1 0 1 1 0 8 0 pgrppl 48 39 0 29 1 0 1 1 0 8 0 ucredpl 96 1858 0 1851 1 0 1 1 0 8 0 zombiepl 144 1556 0 1555 1 0 1 1 0 8 0 processpl 896 1586 0 1555 4 0 4 4 0 8 0 procpl 624 3320 0 3280 5 1 4 4 0 8 0 sosppl 128 26 0 26 7 6 1 1 0 8 1 sockpl 400 5566 0 5546 21 16 5 7 0 8 2 mcl64k 65536 145 0 145 4 3 1 1 0 8 1 mcl16k 16384 16 0 16 5 5 0 1 0 8 0 mcl12k 12288 30 0 30 8 7 1 1 0 8 1 mcl9k 9216 27 0 27 5 5 0 1 0 8 0 mcl8k 8192 49 0 49 3 3 0 1 0 8 0 mcl4k 4096 172 0 172 5 4 1 1 0 8 1 mcl2k2 2112 12 0 12 8 8 0 1 0 8 0 mcl2k 2048 67288 0 67232 23 14 9 19 0 8 0 mtagpl 80 13 0 13 2 2 0 1 0 8 0 mbufpl 256 121123 0 120930 41 22 19 24 0 8 0 bufpl 280 10347 0 3980 455 0 455 455 0 8 0 anonpl 16 240920 0 223941 119 46 73 85 0 107 3 amapchunkpl 152 8981 0 8782 39 30 9 20 0 158 0 amappl16 192 11958 0 11047 94 45 49 59 0 8 2 amappl15 184 64 0 60 1 0 1 1 0 8 0 amappl14 176 277 0 275 1 0 1 1 0 8 0 amappl13 168 9 0 9 2 2 0 1 0 8 0 amappl12 160 137 0 137 2 2 0 1 0 8 0 amappl11 152 228 0 217 1 0 1 1 0 8 0 amappl10 144 131 0 129 1 0 1 1 0 8 0 amappl9 136 1217 0 1211 1 0 1 1 0 8 0 amappl8 128 755 0 725 2 0 2 2 0 8 1 amappl7 120 244 0 230 1 0 1 1 0 8 0 amappl6 112 227 0 218 1 0 1 1 0 8 0 amappl5 104 321 0 311 1 0 1 1 0 8 0 amappl4 96 1491 0 1462 1 0 1 1 0 8 0 amappl3 88 706 0 699 1 0 1 1 0 8 0 amappl2 80 11394 0 11323 3 1 2 3 0 8 0 amappl1 72 37933 0 37517 25 16 9 20 0 8 0 amappl 80 3681 0 3625 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 61 0 12 1 0 1 1 0 8 0 uaddrrnd 24 1589 0 1562 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1589 0 1562 1 0 1 1 0 8 0 vmmpekpl 168 13895 0 13862 2 0 2 2 0 8 0 vmmpepl 168 197456 0 195406 209 98 111 125 0 357 18 vmsppl 272 1588 0 1562 3 1 2 2 0 8 0 pdppl 4096 3184 0 3137 9 2 7 7 0 8 1 pvpl 32 655836 0 636450 320 114 206 304 0 265 44 pmappl 200 1588 0 1562 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 236 0 82 5 0 5 5 0 8 0