login: panic: receive 3: so 0xfffffd806f6d5320, so_type 3, m 0xfffffd806f338600, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *451629 68818 0 0 0 1K dhclient 508017 78846 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b1c5f) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6d5320,0,ffff800020abdb98,0,0,ffff800020abdaa4) at soreceive+0x1727 soo_read(fffffd807ba2c098,ffff800020abdb98,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a7c4e8,6,ffff800020abdb98,0,ffff800020abdc80) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236 sys_read(ffff800020a7c4e8,ffff800020abdc30,ffff800020abdc80) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff800020abdd00) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020abdd00) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeaef0, 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 3: so 0xfffffd806f6d5320, so_type 3, m 0xfffffd806f338600, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821b1c5f) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6d5320,0,ffff800020abdb98,0,0,ffff800020abdaa4) at soreceive+0x1727 soo_read(fffffd807ba2c098,ffff800020abdb98,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020a7c4e8,6,ffff800020abdb98,0,ffff800020abdc80) at dofilereadv+0x1a1 sys/kern/sys_generic.c:236 sys_read(ffff800020a7c4e8,ffff800020abdc30,ffff800020abdc80) at sys_read+0x83 sys/kern/sys_generic.c:156 syscall(ffff800020abdd00) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020abdd00) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeaef0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020abd8e0 rbx 0xffff800020abd990 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81f53faf kprintf+0x16f r9 0x1 r10 0xce5d47d8162bbf49 r11 0x61df0908feb75da3 r12 0x3000000008 r13 0xffff800020abd8f0 r14 0x100 r15 0x1 rip 0xffffffff81e05b48 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020abd8d0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=451629 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a7cea8,0xffff800020a7cc48 process=0xffff800020a903d0 user=0xffff800020ab8000, vmspace=0xfffffd807f000000 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 27567 495644 88668 0 3 0x82 thrsleep syz-execprog 27567 322673 88668 0 3 0x4000082 thrsleep syz-execprog 27567 47047 88668 0 3 0x4000082 thrsleep syz-execprog 27567 27854 88668 0 3 0x4000082 thrsleep syz-execprog 27567 17772 88668 0 3 0x4000082 thrsleep syz-execprog 27567 93406 88668 0 3 0x4000082 kqread syz-execprog 27567 453636 88668 0 3 0x4000082 thrsleep syz-execprog 27567 202070 88668 0 3 0x4000082 thrsleep syz-execprog 27567 372615 88668 0 3 0x4000082 wait syz-execprog 88668 519585 2829 0 3 0x10008a pause ksh 2829 317482 66248 0 3 0x92 select sshd 99797 19545 1 0 3 0x100083 ttyin getty 66248 65363 1 0 3 0x80 select sshd 3358 226782 34889 74 3 0x100092 bpf pflogd 34889 218236 1 0 3 0x80 netio pflogd 77148 188684 13004 73 3 0x100090 kqread syslogd 13004 405772 1 0 3 0x100082 netio syslogd 38439 363191 1 77 3 0x100090 poll dhclient *68818 451629 1 0 7 0 dhclient 18794 135449 0 0 3 0x14200 pgzero zerothread 97843 277308 0 0 3 0x14200 aiodoned aiodoned 16794 481961 0 0 3 0x14200 syncer update 39798 235704 0 0 3 0x14200 cleaner cleaner 78846 508017 0 0 7 0x14200 reaper 91640 377421 0 0 3 0x14200 pgdaemon pagedaemon 66971 159847 0 0 3 0x14200 bored crynlk 77893 406174 0 0 3 0x14200 bored crypto 67314 295212 0 0 3 0x40014200 acpi0 acpi0 7188 166378 0 0 3 0x40014200 idle1 70743 362415 0 0 3 0x14200 bored softnet 32684 294320 0 0 3 0x14200 bored systqmp 90288 433602 0 0 3 0x14200 bored systq 36803 480957 0 0 3 0x40014200 bored softclock 70289 460484 0 0 3 0x40014200 idle0 89704 184429 0 0 3 0x14200 bored smr 1 54708 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd807efff2c8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pmap_do_remove+0x88 rcr3 machine/cpufunc.h:141 [inline] #3 pmap_do_remove+0x88 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:414 [inline] #3 pmap_do_remove+0x88 sys/arch/amd64/amd64/pmap.c:1756 #4 uvm_map_teardown+0x195 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #4 uvm_map_teardown+0x195 sys/uvm/uvm_map.c:2737 #5 uvmspace_free+0x86 sys/uvm/uvm_map.c:3611 #6 uvm_exit+0x29 sys/uvm/uvm_glue.c:297 #7 reaper+0x189 sys/kern/kern_exit.c:443 #8 proc_trampoline+0x1c Process 68818 (dhclient) thread 0xffff800020a7c4e8 (451629) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8262c6a0) #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{1}> 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 84 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 1938 0 kqueue 3 4K 4K 78643K 3 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 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 1 0 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 0 1 0 1 1 0 8 0 pfstkey 112 10 0 0 1 0 1 1 0 8 0 pfstate 328 10 0 0 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 256 168 0 47 11 0 11 11 0 8 2 art_table 32 169 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 1 0 1 1 0 8 1 percpumem 16 31 0 1 1 0 1 1 0 8 0 scxspl 192 4481 0 4481 2 1 1 2 0 8 1 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 1 0 1 1 0 8 0 pipepl 120 148 0 139 1 0 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 1 0 1 1 0 8 0 processpl 960 241 0 212 5 0 5 5 0 8 1 procpl 624 249 0 212 4 0 4 4 0 8 1 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 79 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 130 0 0 8 0 8 8 0 8 0 bufpl 280 3808 0 191 259 0 259 259 0 8 0 anonpl 16 22235 0 20623 14 1 13 13 0 125 5 amapchunkpl 152 786 0 717 5 0 5 5 0 158 1 amappl16 192 92 0 63 2 0 2 2 0 8 0 amappl15 184 58 0 54 1 0 1 1 0 8 0 amappl14 176 27 0 23 1 0 1 1 0 8 0 amappl12 160 1 0 1 1 1 0 1 0 8 0 amappl11 152 53 0 37 1 0 1 1 0 8 0 amappl10 144 10 0 8 1 0 1 1 0 8 0 amappl9 136 436 0 434 1 0 1 1 0 8 0 amappl8 128 95 0 83 1 0 1 1 0 8 0 amappl7 120 98 0 87 1 0 1 1 0 8 0 amappl6 112 59 0 53 1 0 1 1 0 8 0 amappl5 104 126 0 112 1 0 1 1 0 8 0 amappl4 96 493 0 463 2 0 2 2 0 8 1 amappl3 88 122 0 115 1 0 1 1 0 8 0 amappl2 80 953 0 891 3 0 3 3 0 8 1 amappl1 72 15229 0 14805 27 9 18 21 0 8 8 amappl 80 476 0 447 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 6242 0 6213 2 0 2 2 0 8 0 vmmpepl 168 33089 0 32153 92 10 82 82 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 112369 0 108431 116 0 116 116 0 265 82 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 112 148 0 3 5 0 5 5 0 8 0 ddb{1}>