panic: receive 1: so 0xfffffd806f689000, so_type 3, sb_cc 7062 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 519708 43284 73 0x100010 0 0 syslogd *173961 77015 0 0 0 1K dhclient db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d4a21) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f689000,0,ffff800020e2d2e8,0,0,ffff800020e2d1f4) at soreceive+0x16ec sys/kern/uipc_socket.c:823 soo_read(fffffd80769fa098,ffff800020e2d2e8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020dec4e8,6,ffff800020e2d2e8,0,ffff800020e2d3d0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dec4e8,ffff800020e2d380,ffff800020e2d3d0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e2d450) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e2d450) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef950, 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 0xfffffd806f689000, so_type 3, sb_cc 7062 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d4a21) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f689000,0,ffff800020e2d2e8,0,0,ffff800020e2d1f4) at soreceive+0x16ec sys/kern/uipc_socket.c:823 soo_read(fffffd80769fa098,ffff800020e2d2e8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020dec4e8,6,ffff800020e2d2e8,0,ffff800020e2d3d0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dec4e8,ffff800020e2d380,ffff800020e2d3d0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e2d450) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e2d450) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef950, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e2d030 rbx 0xffff800020e2d0e0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff815a86ff kprintf+0x16f r9 0x1 r10 0x2 r11 0x36dd06633a5d75f r12 0x3000000008 r13 0xffff800020e2d040 r14 0x100 r15 0x1 rip 0xffffffff81bf2388 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e2d020 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=173961 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020decc38,0xffff800020deceb8 process=0xffff800020e003e8 user=0xffff800020e28000, vmspace=0xfffffd807f000170 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76269 204183 61545 0 2 0 syz-executor.0 76269 358916 61545 0 3 0x4000080 fsleep syz-executor.0 7332 293505 3479 0 3 0x2 biowait syz-executor.1 61545 22984 3479 0 3 0x82 nanosleep syz-executor.0 3479 403072 83916 0 3 0x82 kqread syz-fuzzer 3479 269213 83916 0 3 0x4000082 nanosleep syz-fuzzer 3479 136040 83916 0 3 0x4000082 thrsleep syz-fuzzer 3479 321372 83916 0 3 0x4000082 thrsleep syz-fuzzer 3479 362508 83916 0 3 0x4000082 thrsleep syz-fuzzer 3479 44763 83916 0 3 0x4000082 thrsleep syz-fuzzer 3479 157063 83916 0 3 0x4000082 thrsleep syz-fuzzer 3479 184647 83916 0 3 0x4000082 thrsleep syz-fuzzer 3479 94913 83916 0 3 0x4000082 thrsleep syz-fuzzer 3479 91688 83916 0 3 0x4000082 thrsleep syz-fuzzer 83916 34394 88614 0 3 0x10008a pause ksh 88614 460358 67877 0 3 0x92 select sshd 90522 289125 1 0 3 0x100083 ttyin getty 67877 262875 1 0 3 0x80 select sshd 54494 43949 88342 74 3 0x100092 bpf pflogd 88342 291523 1 0 3 0x80 netio pflogd 43284 519708 79093 73 7 0x100010 syslogd 79093 26709 1 0 3 0x100082 netio syslogd 5057 21319 1 77 3 0x100090 poll dhclient *77015 173961 1 0 7 0 dhclient 37841 358902 0 0 3 0x14200 bored smr 65609 451982 0 0 3 0x14200 pgzero zerothread 23792 216065 0 0 3 0x14200 aiodoned aiodoned 74958 238776 0 0 3 0x14200 syncer update 50530 510909 0 0 3 0x14200 cleaner cleaner 5720 411105 0 0 3 0x14200 reaper reaper 62550 117341 0 0 3 0x14200 pgdaemon pagedaemon 33346 362215 0 0 3 0x14200 bored crynlk 47160 371444 0 0 3 0x14200 bored crypto 27515 398641 0 0 3 0x40014200 acpi0 acpi0 43984 21077 0 0 3 0x40014200 idle1 51737 466504 0 0 3 0x14200 bored softnet 21162 232292 0 0 3 0x14200 bored systqmp 10172 83405 0 0 3 0x14200 bored systq 6799 346942 0 0 3 0x40014200 bored softclock 75582 482087 0 0 3 0x40014200 idle0 1 378327 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &newfdp->fd_fd.fd_fplock r = 0 (0xfffffd806f1a7660) #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 fd_getfile+0x4b sys/kern/kern_descrip.c:241 #4 recvit+0x64 getsock sys/kern/uipc_syscalls.c:1143 [inline] #4 recvit+0x64 sys/kern/uipc_syscalls.c:781 #5 sys_recvfrom+0xd0 sys/kern/uipc_syscalls.c:712 #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 Process 7332 (syz-executor.1) thread 0xffff800020ded388 (293505) exclusive rrwlock inode r = 0 (0xfffffd806b211808) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vget+0x1c8 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x14b7 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #11 namei+0x63c sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806b2111a8) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 rw_enter+0x453 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 Process 77015 (dhclient) thread 0xffff800020dec4e8 (173961) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828a43b0) #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 9478 6401K 6593K 78643K 10620 0 pcb 13 8K 8K 78643K 27 0 rtable 89 3K 4K 78643K 229 0 ifaddr 45 10K 11K 78643K 51 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1471 0 iov 0 0K 16K 78643K 6 0 mount 1 1K 1K 78643K 1 0 vnodes 1218 77K 77K 78643K 1238 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 1K 1K 78643K 2 0 sem 8 0K 1K 78643K 19 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 78 0 proc 59 63K 95K 78643K 438 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 6 0 in_multi 22 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 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 211 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 125 23K 23K 78643K 1170 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 14 0 NDP 7 0K 0K 78643K 11 0 temp 73 3844K 3908K 78643K 2119 0 kqueue 3 4K 6K 78643K 6 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 23 0 21 1 0 1 1 0 8 0 rtentry 112 46 0 13 2 0 2 2 0 8 0 unpcb 120 55 0 45 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 tcpqe 32 198 0 198 1 0 1 1 0 8 1 tcpcb 544 44 0 40 2 0 2 2 0 8 1 inpcb 280 115 0 106 2 0 2 2 0 8 1 nd6 48 7 0 4 1 0 1 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 1 0 1 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 pfstitem 24 18 0 0 1 0 1 1 0 8 0 pfstkey 112 18 0 0 1 0 1 1 0 8 0 pfstate 328 18 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 256 204 0 59 13 0 13 13 0 8 2 art_table 32 205 0 59 2 0 2 2 0 8 0 art_node 16 45 0 15 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 8 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1498 0 94 89 0 89 89 0 8 0 ffsino 272 1498 0 94 94 0 94 94 0 8 0 nchpl 144 1784 0 175 60 0 60 60 0 8 0 uvmvnodes 72 1554 0 0 29 0 29 29 0 8 0 vnodes 208 1554 0 0 82 0 82 82 0 8 0 namei 1024 4642 0 4642 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 192 5085 0 5084 2 1 1 2 0 8 0 plimitpl 152 23 0 15 1 0 1 1 0 8 0 sigapl 424 293 0 262 4 0 4 4 0 8 0 futexpl 56 880 0 879 1 0 1 1 0 8 0 knotepl 112 65 0 46 1 0 1 1 0 8 0 kqueuepl 144 6 0 4 1 0 1 1 0 8 0 pipelkpl 48 81 0 71 1 0 1 1 0 8 0 pipepl 120 162 0 143 1 0 1 1 0 8 0 fdescpl 496 278 0 262 3 0 3 3 0 8 0 filepl 152 1429 0 1327 5 0 5 5 0 8 1 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 144 262 0 262 1 0 1 1 0 8 1 processpl 984 293 0 262 5 0 5 5 0 8 0 procpl 624 398 0 357 4 0 4 4 0 8 0 srpgc 64 2 0 2 1 0 1 1 0 8 1 sockpl 400 193 0 172 4 0 4 4 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 161 0 0 20 0 20 20 0 8 0 mtagpl 80 3 0 0 1 0 1 1 0 8 0 mbufpl 256 190 0 0 12 0 12 12 0 8 0 bufpl 280 3426 0 133 236 0 236 236 0 8 0 anonpl 16 40128 0 25579 60 1 59 59 0 124 0 amapchunkpl 152 1320 0 1171 9 0 9 9 0 158 2 amappl16 192 1064 0 293 39 0 39 39 0 8 0 amappl15 184 22 0 19 1 0 1 1 0 8 0 amappl14 176 24 0 19 1 0 1 1 0 8 0 amappl13 168 29 0 26 1 0 1 1 0 8 0 amappl12 160 12 0 8 1 0 1 1 0 8 0 amappl11 152 79 0 62 1 0 1 1 0 8 0 amappl10 144 21 0 14 1 0 1 1 0 8 0 amappl9 136 389 0 388 1 0 1 1 0 8 0 amappl8 128 358 0 325 2 0 2 2 0 8 0 amappl7 120 124 0 112 1 0 1 1 0 8 0 amappl6 112 26 0 23 1 0 1 1 0 8 0 amappl5 104 174 0 156 1 0 1 1 0 8 0 amappl4 96 485 0 457 1 0 1 1 0 8 0 amappl3 88 109 0 101 1 0 1 1 0 8 0 amappl2 80 1301 0 1227 2 0 2 2 0 8 0 amappl1 72 16228 0 15791 23 10 13 18 0 8 3 amappl 80 654 0 609 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 278 0 262 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 278 0 262 1 0 1 1 0 8 0 vmmpekpl 168 6174 0 6145 2 0 2 2 0 8 0 vmmpepl 168 40782 0 38857 111 5 106 106 0 357 21 vmsppl 368 277 0 262 2 0 2 2 0 8 0 pdppl 4096 563 0 524 7 1 6 6 0 8 1 pvpl 32 141410 0 123749 144 0 144 144 0 265 1 pmappl 232 277 0 262 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 259 0 4 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8275eff0) 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(ffffffff828a41a8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828a41a8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 solock(fffffd806eaece18) at solock+0x66 sys/kern/uipc_socket2.c:292 soreceive(fffffd806eaece18,ffff800020e65470,ffff800020e65438,0,0,ffff800020e65564) at soreceive+0x114 sys/kern/uipc_socket.c:731 recvit(ffff800020e50eb0,8,ffff800020e65538,7f7ffffd42b4,ffff800020e65620) at recvit+0x32b sys/kern/uipc_syscalls.c:812 sys_recvfrom(ffff800020e50eb0,ffff800020e655d0,ffff800020e65620) at sys_recvfrom+0xd0 sys/kern/uipc_syscalls.c:712 syscall(ffff800020e656a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e656a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4230, count: 5 ddb{0}> trace x86_ipi_db(ffffffff8275eff0) 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(ffffffff828a41a8) at __mp_lock+0x127 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828a41a8) at __mp_lock+0x127 sys/kern/kern_lock.c:147 solock(fffffd806eaece18) at solock+0x66 sys/kern/uipc_socket2.c:292 soreceive(fffffd806eaece18,ffff800020e65470,ffff800020e65438,0,0,ffff800020e65564) at soreceive+0x114 sys/kern/uipc_socket.c:731 recvit(ffff800020e50eb0,8,ffff800020e65538,7f7ffffd42b4,ffff800020e65620) at recvit+0x32b sys/kern/uipc_syscalls.c:812 sys_recvfrom(ffff800020e50eb0,ffff800020e655d0,ffff800020e65620) at sys_recvfrom+0xd0 sys/kern/uipc_syscalls.c:712 syscall(ffff800020e656a0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e656a0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4230, count: -10 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(ffffffff823d4a21) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f689000,0,ffff800020e2d2e8,0,0,ffff800020e2d1f4) at soreceive+0x16ec sys/kern/uipc_socket.c:823 soo_read(fffffd80769fa098,ffff800020e2d2e8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020dec4e8,6,ffff800020e2d2e8,0,ffff800020e2d3d0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dec4e8,ffff800020e2d380,ffff800020e2d3d0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e2d450) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e2d450) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef950, count: 7 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff823d4a21) at panic+0x15c sys/kern/subr_prf.c:207 soreceive(fffffd806f689000,0,ffff800020e2d2e8,0,0,ffff800020e2d1f4) at soreceive+0x16ec sys/kern/uipc_socket.c:823 soo_read(fffffd80769fa098,ffff800020e2d2e8,0) at soo_read+0x53 sys/kern/sys_socket.c:70 dofilereadv(ffff800020dec4e8,6,ffff800020e2d2e8,0,ffff800020e2d3d0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff800020dec4e8,ffff800020e2d380,ffff800020e2d3d0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff800020e2d450) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e2d450) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef950, count: -8