login: panic: receive 3: so 0xfffffd806f6db320, so_type 3, m 0xfffffd806d809f00, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *124112 71870 0 0 0 0K dhclient 87501 20703 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821dff3d) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6db320,0,ffff800020ead468,0,0,ffff800020ead374) at soreceive+0x1727 soo_read(fffffd807dbf4098,ffff800020ead468,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020e6d118,6,ffff800020ead468,0,ffff800020ead550) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e6d118,ffff800020ead500,ffff800020ead550) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020ead5d0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ead5d0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff0770, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic receive 3: so 0xfffffd806f6db320, so_type 3, m 0xfffffd806d809f00, m_type 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821dff3d) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6db320,0,ffff800020ead468,0,0,ffff800020ead374) at soreceive+0x1727 soo_read(fffffd807dbf4098,ffff800020ead468,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020e6d118,6,ffff800020ead468,0,ffff800020ead550) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e6d118,ffff800020ead500,ffff800020ead550) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020ead5d0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ead5d0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff0770, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020ead1b0 rbx 0xffff800020ead260 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff813f10ef kprintf+0x16f r9 0x1 r10 0x8b4699b615224a1a r11 0x32b4c6dadb247604 r12 0x3000000008 r13 0xffff800020ead1c0 r14 0x100 r15 0x1 rip 0xffffffff81d6d978 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020ead1a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhclient) pid=124112 stat=onproc flags process=0 proc=0 pri=24, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6c008,0xffff800020e6d608 process=0xffff800020e80f70 user=0xffff800020ea8000, vmspace=0xfffffd807f0002e0 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31730 320710 57525 0 3 0x82 thrsleep syz-execprog 31730 212329 57525 0 3 0x4000082 thrsleep syz-execprog 31730 126572 57525 0 3 0x4000082 thrsleep syz-execprog 31730 258937 57525 0 3 0x4000082 thrsleep syz-execprog 31730 115875 57525 0 3 0x4000082 wait syz-execprog 31730 338106 57525 0 3 0x4000082 thrsleep syz-execprog 31730 506279 57525 0 3 0x4000082 thrsleep syz-execprog 31730 40399 57525 0 3 0x4000082 thrsleep syz-execprog 31730 449501 57525 0 3 0x4000082 kqread syz-execprog 57525 418308 70487 0 3 0x10008a pause ksh 70487 397851 65607 0 3 0x92 select sshd 55487 420007 1 0 3 0x100083 ttyin getty 65607 126378 1 0 3 0x80 select sshd 62219 64369 70776 74 3 0x100092 bpf pflogd 70776 46447 1 0 3 0x80 netio pflogd 72990 47611 39516 73 3 0x100090 kqread syslogd 39516 479105 1 0 3 0x100082 netio syslogd 10896 493860 1 77 2 0x100010 dhclient *71870 124112 1 0 7 0 dhclient 76372 374621 0 0 3 0x14200 bored smr 13798 80485 0 0 3 0x14200 pgzero zerothread 60094 4272 0 0 3 0x14200 aiodoned aiodoned 82011 509851 0 0 3 0x14200 syncer update 1723 303711 0 0 3 0x14200 cleaner cleaner 20703 87501 0 0 7 0x14200 reaper 58716 448570 0 0 3 0x14200 pgdaemon pagedaemon 46322 325499 0 0 3 0x14200 bored crynlk 41459 358681 0 0 3 0x14200 bored crypto 88193 62580 0 0 3 0x40014200 acpi0 acpi0 92034 108736 0 0 3 0x40014200 idle1 93159 465570 0 0 3 0x14200 bored softnet 97597 485264 0 0 3 0x14200 bored systqmp 70226 427289 0 0 3 0x14200 bored systq 28710 332069 0 0 3 0x40014200 bored softclock 81353 242401 0 0 3 0x40014200 idle0 1 276533 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex pvpl r = 0 (0xffffffff8266fa98) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pool_put+0x64 sys/kern/subr_pool.c:792 #4 pmap_do_remove+0x61b sys/arch/amd64/amd64/pmap.c:1866 #5 uvm_map_teardown+0x195 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x195 sys/uvm/uvm_map.c:2739 #6 uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 #7 uvm_exit+0x29 sys/uvm/uvm_glue.c:297 #8 reaper+0x189 sys/kern/kern_exit.c:456 #9 proc_trampoline+0x1c Process 71870 (dhclient) thread 0xffff800020e6d118 (124112) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82655658) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9462 6393K 6395K 78643K 10557 0 pcb 13 8K 8K 78643K 13 0 rtable 61 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 1183 74K 75K 78643K 1188 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 76 12K 12K 78643K 946 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 3033K 3097K 78643K 1867 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 12 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 3 0 3 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 256 144 0 48 9 0 9 9 0 8 3 art_table 32 145 0 48 2 0 2 2 0 8 1 art_node 16 33 0 13 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1424 0 22 88 0 88 88 0 8 0 ffsino 272 1424 0 22 94 0 94 94 0 8 0 nchpl 144 1640 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 4205 0 4205 1 0 1 1 0 8 1 percpumem 16 31 0 1 1 0 1 1 0 8 0 scxspl 192 3817 0 3817 2 1 1 2 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 424 241 0 213 4 0 4 4 0 8 0 knotepl 112 47 0 38 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 48 77 0 71 1 0 1 1 0 8 0 pipepl 120 154 0 145 1 0 1 1 0 8 0 fdescpl 496 226 0 213 3 0 3 3 0 8 0 filepl 152 1110 0 1057 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 62 0 53 1 0 1 1 0 8 0 zombiepl 144 213 0 212 1 0 1 1 0 8 0 processpl 984 241 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 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 80 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 145 0 0 9 0 9 9 0 8 0 bufpl 280 2979 0 133 204 0 204 204 0 8 0 anonpl 16 22097 0 20510 13 1 12 12 0 124 3 amapchunkpl 152 788 0 723 4 0 4 4 0 158 1 amappl16 192 142 0 112 2 0 2 2 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 32 0 27 1 0 1 1 0 8 0 amappl13 168 21 0 20 1 0 1 1 0 8 0 amappl12 160 9 0 7 2 1 1 1 0 8 0 amappl11 152 49 0 34 1 0 1 1 0 8 0 amappl10 144 23 0 19 1 0 1 1 0 8 0 amappl9 136 210 0 208 1 0 1 1 0 8 0 amappl8 128 270 0 262 1 0 1 1 0 8 0 amappl7 120 115 0 103 1 0 1 1 0 8 0 amappl6 112 27 0 23 2 1 1 1 0 8 0 amappl5 104 164 0 149 1 0 1 1 0 8 0 amappl4 96 492 0 465 1 0 1 1 0 8 0 amappl3 88 105 0 100 1 0 1 1 0 8 0 amappl2 80 904 0 849 2 0 2 2 0 8 0 amappl1 72 15200 0 14788 24 6 18 18 0 8 8 amappl 80 472 0 444 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 6351 0 6326 2 0 2 2 0 8 0 vmmpepl 168 32525 0 31626 83 11 72 72 0 357 29 vmsppl 368 225 0 212 2 0 2 2 0 8 0 pdppl 4096 460 0 424 6 0 6 6 0 8 0 pvpl 32 113360 0 109490 104 0 104 104 0 265 69 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 112 235 0 3 7 0 7 7 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821dff3d) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f6db320,0,ffff800020ead468,0,0,ffff800020ead374) at soreceive+0x1727 soo_read(fffffd807dbf4098,ffff800020ead468,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020e6d118,6,ffff800020ead468,0,ffff800020ead550) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020e6d118,ffff800020ead500,ffff800020ead550) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020ead5d0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020ead5d0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff0770, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020e00ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82655450) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82655450) at __mp_lock+0x127 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800020e5f380,1) at uvm_unmap_detach+0xe7 sys/uvm/uvm_map.c:1581 uvm_map_teardown(fffffd807f000b80) at uvm_map_teardown+0x25c sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd807f000b80) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800020e807c0) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020e19860) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: 6 ddb{1}> trace x86_ipi_db(ffff800020e00ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82655450) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82655450) at __mp_lock+0x127 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff800020e5f380,1) at uvm_unmap_detach+0xe7 sys/uvm/uvm_map.c:1581 uvm_map_teardown(fffffd807f000b80) at uvm_map_teardown+0x25c sys/uvm/uvm_map.c:2757 uvmspace_free(fffffd807f000b80) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff800020e807c0) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff800020e19860) at reaper+0x189 sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -9 ddb{1}>