login: panic: receive 1: so 0xfffffd806f6e1190, so_type 3, sb_cc 5832 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 166841 47733 73 0x100010 0 0 syslogd *453264 27700 0 0 0 1K dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821edf4d) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6e1190,0,ffff800020ead4d8,0,0,ffff800020ead3e4) at soreceive+0x16ec sys/kern/uipc_socket.c:823 soo_read(fffffd8078804260,ffff800020ead4d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020e6c758,6,ffff800020ead4d8,0,ffff800020ead5c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e6c758,ffff800020ead570,ffff800020ead5c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020ead640) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ead640) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4dc0, 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 1: so 0xfffffd806f6e1190, so_type 3, sb_cc 5832 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821edf4d) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6e1190,0,ffff800020ead4d8,0,0,ffff800020ead3e4) at soreceive+0x16ec sys/kern/uipc_socket.c:823 soo_read(fffffd8078804260,ffff800020ead4d8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020e6c758,6,ffff800020ead4d8,0,ffff800020ead5c0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e6c758,ffff800020ead570,ffff800020ead5c0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020ead640) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ead640) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4dc0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020ead220 rbx 0xffff800020ead2d0 rdx 0xffff800020e6c758 rcx 0 rax 0 r8 0xffffffff8199412f kprintf+0x16f r9 0x1 r10 0x25 r11 0xaf54e93314cd7276 r12 0x3000000008 r13 0xffff800020ead230 r14 0x100 r15 0x1 rip 0xffffffff810c3ce8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020ead210 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=453264 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6cea8,0xffff800020e6cc48 process=0xffff800020e80010 user=0xffff800020ea8000, vmspace=0xfffffd807f000450 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99980 281317 6093 0 2 0 syz-executor.0 12135 53797 89840 0 2 0 syz-executor.1 12135 262708 89840 0 3 0x4000080 fsleep syz-executor.1 89840 342664 49149 0 3 0x82 nanosleep syz-executor.1 6093 240470 49149 0 3 0x82 nanosleep syz-executor.0 49149 347612 97016 0 3 0x82 thrsleep syz-fuzzer 49149 435478 97016 0 3 0x4000082 nanosleep syz-fuzzer 49149 5487 97016 0 3 0x4000082 thrsleep syz-fuzzer 49149 140835 97016 0 3 0x4000082 thrsleep syz-fuzzer 49149 317073 97016 0 3 0x4000082 thrsleep syz-fuzzer 49149 385273 97016 0 3 0x4000082 thrsleep syz-fuzzer 49149 373786 97016 0 3 0x4000082 thrsleep syz-fuzzer 49149 75438 97016 0 3 0x4000082 thrsleep syz-fuzzer 49149 319107 97016 0 3 0x4000082 thrsleep syz-fuzzer 49149 292277 97016 0 3 0x4000082 kqread syz-fuzzer 97016 31732 95711 0 3 0x10008a pause ksh 95711 365680 38080 0 3 0x92 select sshd 60601 159119 1 0 3 0x100083 ttyin getty 38080 286298 1 0 3 0x80 select sshd 89865 316421 22174 74 3 0x100092 bpf pflogd 22174 346224 1 0 3 0x80 netio pflogd 47733 166841 31303 73 7 0x100010 syslogd 31303 341594 1 0 3 0x100082 netio syslogd 77012 270093 1 77 3 0x100090 poll dhclient *27700 453264 1 0 7 0 dhclient 2792 101563 0 0 3 0x14200 bored smr 55345 393853 0 0 2 0x14200 zerothread 42655 7040 0 0 3 0x14200 aiodoned aiodoned 79764 410311 0 0 3 0x14200 syncer update 21634 401809 0 0 3 0x14200 cleaner cleaner 12941 467587 0 0 3 0x14200 reaper reaper 34965 204788 0 0 3 0x14200 pgdaemon pagedaemon 81166 373137 0 0 3 0x14200 bored crynlk 89440 278492 0 0 3 0x14200 bored crypto 67898 5478 0 0 3 0x40014200 acpi0 acpi0 81279 515921 0 0 3 0x40014200 idle1 74691 193951 0 0 3 0x14200 bored softnet 12214 217864 0 0 3 0x14200 bored systqmp 61696 350953 0 0 3 0x14200 bored systq 93073 79314 0 0 3 0x40014200 bored softclock 31583 181573 0 0 3 0x40014200 idle0 1 483400 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 27700 (dhclient) thread 0xffff800020e6c758 (453264) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8265c968) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 soreceive+0x114 sys/kern/uipc_socket.c:731 #3 soo_read+0x53 sys/kern/sys_socket.c:70 #4 dofilereadv+0x1a1 sys/kern/sys_generic.c:237 #5 sys_read+0x83 sys/kern/sys_generic.c:157 #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9472 6398K 6535K 78643K 10595 0 pcb 14 8K 8K 78643K 30 0 rtable 75 2K 3K 78643K 207 0 ifaddr 43 10K 10K 78643K 48 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1474 0 iov 0 0K 12K 78643K 4 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1228 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 4 0K 0K 78643K 4 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 6 17K 25K 78643K 62 0 proc 61 63K 95K 78643K 450 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 2 0 in_multi 29 1K 2K 78643K 36 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 31 148K 148K 78643K 31 0 exec 0 0K 1K 78643K 207 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 109 22K 23K 78643K 1109 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 6 0K 0K 78643K 10 0 temp 67 3035K 3099K 78643K 2122 0 kqueue 3 4K 5K 78643K 5 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> 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 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 26 0 23 1 0 1 1 0 8 0 rtentry 112 46 0 17 2 0 2 2 0 8 0 unpcb 120 37 0 27 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 21 0 16 1 0 1 1 0 8 0 inpcb 280 95 0 84 2 0 2 2 0 8 1 nd6 48 6 0 2 1 0 1 1 0 8 0 pkpcb 40 27 0 27 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 14 0 0 1 0 1 1 0 8 0 pfstkey 112 14 0 0 1 0 1 1 0 8 0 pfstate 328 14 0 0 2 0 2 2 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 256 220 0 57 12 0 12 12 0 8 1 art_table 32 221 0 57 2 0 2 2 0 8 0 art_node 16 45 0 19 1 0 1 1 0 8 0 semapl 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 1460 0 53 89 0 89 89 0 8 0 ffsino 272 1460 0 53 95 0 95 95 0 8 0 nchpl 144 1735 0 119 61 0 61 61 0 8 0 uvmvnodes 72 1509 0 0 28 0 28 28 0 8 0 vnodes 208 1509 0 0 80 0 80 80 0 8 0 namei 1024 4448 0 4448 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 192 5123 0 5123 4 1 3 3 0 8 3 plimitpl 152 18 0 9 1 0 1 1 0 8 0 sigapl 424 277 0 245 4 0 4 4 0 8 0 futexpl 56 446 0 445 1 0 1 1 0 8 0 knotepl 112 55 0 36 1 0 1 1 0 8 0 kqueuepl 144 10 0 8 1 0 1 1 0 8 0 pipelkpl 48 84 0 74 1 0 1 1 0 8 0 pipepl 120 168 0 149 1 0 1 1 0 8 0 fdescpl 496 262 0 245 3 0 3 3 0 8 0 filepl 152 1333 0 1228 7 2 5 5 0 8 0 lockfpl 104 7 0 6 1 0 1 1 0 8 0 lockfspl 48 4 0 3 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 67 0 58 1 0 1 1 0 8 0 zombiepl 144 245 0 245 1 0 1 1 0 8 1 processpl 984 277 0 245 6 1 5 5 0 8 0 procpl 624 356 0 314 4 0 4 4 0 8 0 sockpl 400 186 0 162 4 0 4 4 0 8 1 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 161 0 0 20 0 20 20 0 8 0 mtagpl 80 2 0 0 1 0 1 1 0 8 0 mbufpl 256 229 0 0 14 0 14 14 0 8 0 bufpl 280 4227 0 189 289 0 289 289 0 8 0 anonpl 16 39161 0 25052 60 1 59 59 0 124 2 amapchunkpl 152 1219 0 1087 8 0 8 8 0 158 2 amappl16 192 1038 0 279 40 0 40 40 0 8 2 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 24 0 18 1 0 1 1 0 8 0 amappl13 168 42 0 39 1 0 1 1 0 8 0 amappl12 160 8 0 5 2 1 1 1 0 8 0 amappl11 152 74 0 57 1 0 1 1 0 8 0 amappl10 144 31 0 23 1 0 1 1 0 8 0 amappl9 136 390 0 389 1 0 1 1 0 8 0 amappl8 128 321 0 295 1 0 1 1 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 25 0 20 1 0 1 1 0 8 0 amappl5 104 160 0 143 1 0 1 1 0 8 0 amappl4 96 502 0 472 1 0 1 1 0 8 0 amappl3 88 104 0 99 1 0 1 1 0 8 0 amappl2 80 1162 0 1090 3 0 3 3 0 8 1 amappl1 72 16060 0 15616 25 9 16 20 0 8 6 amappl 80 599 0 556 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 24 262 0 245 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 262 0 245 1 0 1 1 0 8 0 vmmpekpl 168 6011 0 5976 2 0 2 2 0 8 0 vmmpepl 168 39191 0 37220 107 1 106 106 0 357 20 vmsppl 368 261 0 245 2 0 2 2 0 8 0 pdppl 4096 532 0 490 6 0 6 6 0 8 0 pvpl 32 139614 0 122057 148 0 148 148 0 265 6 pmappl 232 261 0 245 2 0 2 2 0 8 1 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 258 0 3 8 0 8 8 0 8 0