panic: receive 3: so 0xfffffd806f689640, so_type 3, m 0xfffffd806d7d6600, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 142278 16981 0 0 0x4000080 0 syz-executor.1 *197611 23999 0 0 0 1 dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e29ff) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f689640,0,ffff800020e1e258,0,0,ffff800020e1e164) at soreceive+0x1727 soo_read(fffffd80721f7098,ffff800020e1e258,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddcea8,6,ffff800020e1e258,0,ffff800020e1e340) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddcea8,ffff800020e1e2f0,ffff800020e1e340) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e3c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e3c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7760, 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 0xfffffd806f689640, so_type 3, m 0xfffffd806d7d6600, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e29ff) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f689640,0,ffff800020e1e258,0,0,ffff800020e1e164) at soreceive+0x1727 soo_read(fffffd80721f7098,ffff800020e1e258,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddcea8,6,ffff800020e1e258,0,ffff800020e1e340) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddcea8,ffff800020e1e2f0,ffff800020e1e340) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e3c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e3c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7760, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e1dfa0 rbx 0xffff800020e1e050 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8150d54f kprintf+0x16f r9 0x1 r10 0x2 r11 0x90d656c4abdb3d07 r12 0x3000000008 r13 0xffff800020e1dfb0 r14 0x100 r15 0x1 rip 0xffffffff818b9b58 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e1df90 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=197611 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddc758,0xffff800020ddd398 process=0xffff800020df0f90 user=0xffff800020e19000, vmspace=0xfffffd807effe450 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35154 192221 21072 0 2 0 syz-executor.0 35154 251013 21072 0 2 0x4000000 syz-executor.0 16981 456835 53027 0 2 0 syz-executor.1 16981 142278 53027 0 7 0x4000080 syz-executor.1 87083 306687 0 0 3 0x14280 nfsidl nfsio 44686 67254 0 0 3 0x14280 nfsidl nfsio 73718 110269 0 0 3 0x14280 nfsidl nfsio 35796 98482 0 0 3 0x14280 nfsidl nfsio 54498 206430 0 0 3 0x14280 nfsidl nfsio 96499 147650 0 0 3 0x14280 nfsidl nfsio 27064 362398 0 0 3 0x14280 nfsidl nfsio 21757 258369 0 0 3 0x14280 nfsidl nfsio 37818 45359 0 0 3 0x14280 nfsidl nfsio 30397 97900 0 0 3 0x14280 nfsidl nfsio 3590 341586 0 0 3 0x14280 nfsidl nfsio 65328 242170 0 0 3 0x14280 nfsidl nfsio 33602 272410 0 0 3 0x14280 nfsidl nfsio 31864 450626 0 0 3 0x14280 nfsidl nfsio 1723 318663 0 0 3 0x14280 nfsidl nfsio 73241 519981 0 0 3 0x14280 nfsidl nfsio 20113 437856 0 0 3 0x14280 nfsidl nfsio 53285 413088 0 0 3 0x14280 nfsidl nfsio 24011 224638 0 0 3 0x14280 nfsidl nfsio 70354 325136 0 0 3 0x14280 nfsidl nfsio 68991 34966 0 0 3 0x14200 bored sosplice 53027 146861 90797 0 3 0x82 nanosleep syz-executor.1 21072 418275 90797 0 3 0x82 nanosleep syz-executor.0 90797 444465 84938 0 3 0x82 thrsleep syz-fuzzer 90797 126157 84938 0 3 0x4000082 nanosleep syz-fuzzer 90797 441360 84938 0 3 0x4000082 thrsleep syz-fuzzer 90797 40924 84938 0 3 0x4000082 kqread syz-fuzzer 90797 101050 84938 0 3 0x4000082 thrsleep syz-fuzzer 90797 112537 84938 0 3 0x4000082 thrsleep syz-fuzzer 90797 31039 84938 0 3 0x4000082 thrsleep syz-fuzzer 90797 432041 84938 0 3 0x4000082 thrsleep syz-fuzzer 90797 112433 84938 0 3 0x4000082 thrsleep syz-fuzzer 90797 215937 84938 0 3 0x4000082 thrsleep syz-fuzzer 84938 180126 40620 0 3 0x10008a pause ksh 40620 402929 41171 0 3 0x92 select sshd 52484 296953 1 0 3 0x100083 ttyin getty 41171 277532 1 0 3 0x80 select sshd 59916 197217 62330 74 3 0x100092 bpf pflogd 62330 107107 1 0 3 0x80 netio pflogd 77745 395907 74679 73 3 0x100090 kqread syslogd 74679 514785 1 0 3 0x100082 netio syslogd 57326 123880 1 77 3 0x100090 poll dhclient *23999 197611 1 0 7 0 dhclient 22538 123662 0 0 3 0x14200 bored smr 15000 207238 0 0 2 0x14200 zerothread 30041 29663 0 0 3 0x14200 aiodoned aiodoned 64816 454281 0 0 3 0x14200 syncer update 25976 71300 0 0 3 0x14200 cleaner cleaner 82177 87607 0 0 3 0x14200 reaper reaper 62318 398608 0 0 3 0x14200 pgdaemon pagedaemon 6400 253140 0 0 3 0x14200 bored crynlk 71227 270512 0 0 3 0x14200 bored crypto 73071 90506 0 0 3 0x40014200 acpi0 acpi0 82812 314536 0 0 3 0x40014200 idle1 89529 154411 0 0 3 0x14200 bored softnet 4001 207643 0 0 3 0x14200 bored systqmp 58963 21237 0 0 3 0x14200 bored systq 20012 190566 0 0 3 0x40014200 bored softclock 35250 50572 0 0 3 0x40014200 idle0 1 433765 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 16981 (syz-executor.1) thread 0xffff800020e03768 (456835) exclusive rwlock futex r = 0 (0xffffffff826ff750) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 sys_futex+0x13d sys/kern/sys_futex.c:116 #2 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #2 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #3 Xsyscall+0x128 Process 23999 (dhclient) thread 0xffff800020ddcea8 (197611) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828fd198) #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:737 #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 9511 6410K 6790K 78643K 11426 0 pcb 13 8K 8K 78643K 90 0 rtable 109 5K 8K 78643K 458 0 ifaddr 72 14K 14K 78643K 168 0 sysctl 2 0K 0K 78643K 2 0 counters 45 34K 34K 78643K 69 0 ioctlops 0 0K 4K 78643K 1560 0 iov 0 0K 32K 78643K 61 0 mount 1 1K 1K 78643K 1 0 vnodes 1237 78K 78K 78643K 1564 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 16 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 191 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 1245 0 sigio 0 0K 0K 78643K 21 0 proc 61 63K 95K 78643K 483 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 40 0 in_multi 29 1K 2K 78643K 97 0 ether_multi 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 255 0 pfkey data 0 0K 0K 78643K 2 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 136 104K 120K 78643K 5064 0 UVM aobj 42 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 42 0 NDP 12 0K 0K 78643K 37 0 temp 133 3864K 3928K 78643K 14707 0 kqueue 3 4K 14K 78643K 18 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 8 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 53 0 51 1 0 1 1 0 8 0 rtentry 112 74 0 33 2 0 2 2 0 8 0 unpcb 120 295 0 285 1 0 1 1 0 8 0 syncache 264 8 0 8 3 2 1 1 0 8 1 tcpqe 32 864 0 864 1 1 0 1 0 8 0 tcpcb 544 391 0 387 2 1 1 2 0 8 0 inpcb 296 1855 0 1848 7 5 2 3 0 8 1 nd6 48 22 0 17 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 3 0 3 2 2 0 1 0 8 0 pffrag 232 6 0 6 1 1 0 1 0 482 0 pffrnode 88 6 0 6 1 1 0 1 0 8 0 pffrent 40 98 0 98 1 1 0 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 43 0 41 1 0 1 1 0 8 0 pfstitem 24 26 0 23 1 0 1 1 0 8 0 pfstkey 112 32 0 29 1 0 1 1 0 8 0 pfstate 328 29 0 26 2 0 2 2 0 8 0 pfrule 1360 33 0 24 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 290 0 95 15 2 13 14 0 8 0 art_table 32 291 0 95 2 0 2 2 0 8 0 art_node 16 73 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 204 0 164 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 187 0 177 1 0 1 1 0 8 0 shmpl 112 59 0 23 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2803 0 1395 89 0 89 89 0 8 0 ffsino 272 2803 0 1395 97 2 95 95 0 8 0 nchpl 144 4900 0 3286 60 0 60 60 0 8 0 uvmvnodes 72 3126 0 0 57 0 57 57 0 8 0 vnodes 208 3126 0 0 165 0 165 165 0 8 0 namei 1024 11932 0 11932 4 3 1 1 0 8 1 percpumem 16 45 0 12 1 0 1 1 0 8 0 vcpupl 1984 9 0 1 2 0 2 2 0 8 0 vmpool 560 12 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 13 0 12 1 0 1 1 0 8 0 scxspl 192 12991 0 12991 10 9 1 7 0 8 1 plimitpl 152 50 0 42 1 0 1 1 0 8 0 sigapl 424 1481 0 1428 6 0 6 6 0 8 0 futexpl 56 14010 0 14010 2 1 1 1 0 8 1 knotepl 112 87 0 68 1 0 1 1 0 8 0 kqueuepl 144 76 0 74 1 0 1 1 0 8 0 pipepl 304 193 0 183 5 4 1 2 0 8 0 fdescpl 496 1445 0 1428 3 0 3 3 0 8 0 filepl 152 6587 0 6486 9 4 5 6 0 8 1 lockfpl 104 152 0 151 1 0 1 1 0 8 0 lockfspl 48 52 0 51 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 456 0 447 1 0 1 1 0 8 0 zombiepl 144 1428 0 1428 3 2 1 1 0 8 1 processpl 992 1481 0 1428 8 1 7 7 0 8 0 procpl 624 4265 0 4201 6 0 6 6 0 8 1 sosppl 128 4 0 4 2 1 1 1 0 8 1 sockpl 400 2215 0 2196 11 7 4 6 0 8 2 mcl64k 65536 264 0 0 33 2 31 33 0 8 1 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 195 0 0 24 0 24 24 0 8 0 mtagpl 96 30 0 0 1 0 1 1 0 8 0 mbufpl 256 485 0 0 26 0 26 26 0 8 0 bufpl 280 4802 0 132 334 0 334 334 0 8 0 anonpl 16 145768 0 128581 115 42 73 86 0 124 3 amapchunkpl 152 8563 0 8415 26 19 7 20 0 158 0 amappl16 192 6682 0 5755 76 29 47 59 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 32 0 28 1 0 1 1 0 8 0 amappl13 168 30 0 27 1 0 1 1 0 8 0 amappl12 160 628 0 623 1 0 1 1 0 8 0 amappl11 152 63 0 45 1 0 1 1 0 8 0 amappl10 144 16 0 11 1 0 1 1 0 8 0 amappl9 136 976 0 973 1 0 1 1 0 8 0 amappl8 128 963 0 924 2 0 2 2 0 8 0 amappl7 120 118 0 106 1 0 1 1 0 8 0 amappl6 112 23 0 20 1 0 1 1 0 8 0 amappl5 104 1976 0 1958 1 0 1 1 0 8 0 amappl4 96 499 0 470 1 0 1 1 0 8 0 amappl3 88 133 0 128 1 0 1 1 0 8 0 amappl2 80 10620 0 10543 2 0 2 2 0 8 0 amappl1 72 53784 0 53322 23 13 10 18 0 8 0 amappl 80 4496 0 4445 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 20 1 0 1 1 0 8 0 uaddrrnd 24 1457 0 1432 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1457 0 1432 1 0 1 1 0 8 0 vmmpekpl 168 14799 0 14762 2 0 2 2 0 8 0 vmmpepl 168 192919 0 190688 142 42 100 119 0 357 3 vmsppl 368 1456 0 1432 3 0 3 3 0 8 0 pdppl 4096 2921 0 2872 8 1 7 7 0 8 0 pvpl 32 437200 0 416620 244 60 184 199 0 265 18 pmappl 232 1456 0 1432 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 330 0 21 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82791ff0) 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(ffffffff828fcf90) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828fcf90) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828fcf90,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800023f3bcc0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800023f3bcc0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800023f3bcc0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 rwsleep(ffff800020e04878,ffffffff826ff740,120,ffffffff823fd400,0) at rwsleep+0x11b sys/kern/kern_synch.c:313 futex_wait(99e7b894030,5,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:254 sys_futex(ffff800020e04878,ffff800023f3be60,ffff800023f3beb0) at sys_futex+0x114 sys/kern/sys_futex.c:110 syscall(ffff800023f3bf30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f3bf30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x99ece032ff0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff82791ff0) 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(ffffffff828fcf90) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828fcf90) at __mp_lock+0x127 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff828fcf90,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800023f3bcc0,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800023f3bcc0,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800023f3bcc0,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 rwsleep(ffff800020e04878,ffffffff826ff740,120,ffffffff823fd400,0) at rwsleep+0x11b sys/kern/kern_synch.c:313 futex_wait(99e7b894030,5,0,2) at futex_wait+0x13c sys/kern/sys_futex.c:254 sys_futex(ffff800020e04878,ffff800023f3be60,ffff800023f3beb0) at sys_futex+0x114 sys/kern/sys_futex.c:110 syscall(ffff800023f3bf30) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f3bf30) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x99ece032ff0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e29ff) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f689640,0,ffff800020e1e258,0,0,ffff800020e1e164) at soreceive+0x1727 soo_read(fffffd80721f7098,ffff800020e1e258,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddcea8,6,ffff800020e1e258,0,ffff800020e1e340) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddcea8,ffff800020e1e2f0,ffff800020e1e340) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e3c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e3c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7760, count: 7 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823e29ff) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f689640,0,ffff800020e1e258,0,0,ffff800020e1e164) at soreceive+0x1727 soo_read(fffffd80721f7098,ffff800020e1e258,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020ddcea8,6,ffff800020e1e258,0,ffff800020e1e340) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020ddcea8,ffff800020e1e2f0,ffff800020e1e340) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e1e3c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e1e3c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7760, count: -8