uvm_fault(fffffd80692733f0,881bb1d6000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003c471960,881bb1d6ce9) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c471960) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7c0121d21460, count: -13
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
witness_checkorder(fffffd806904fc70,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806904fc58,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806904fc58,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd8069118438,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd8069118438,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vget(fffffd8069118438,2001) at vget+0x2a2 sys/kern/vfs_subr.c:693
ktrwriteraw(ffff8000308087e8,fffffd8069118438,fffffd80097fb410,ffff80003c458f20,ffff80003c458f00) at ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688
ktrnamei(ffff8000308087e8,ffff80002a287800) at ktrnamei+0x145 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrnamei(ffff8000308087e8,ffff80002a287800) at ktrnamei+0x145 sys/kern/kern_ktrace.c:222
namei(ffff80003c459070) at namei+0x29e sys/kern/vfs_lookup.c:170
unp_connect(ffff800010fceef0,fffffd806d049500,ffff8000308087e8) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872
uipc_dgram_send(ffff800010fceef0,fffffd805e12a200,fffffd806d049500,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609
sosend(ffff800010fceef0,fffffd806d049500,ffff80003c4592f8,0,0,8) at sosend+0x804 sys/kern/uipc_socket.c:-1
sendit(ffff8000308087e8,7,ffff80003c459478,8,ffff80003c459530) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785
sys_sendmsg(ffff8000308087e8,ffff80003c4595e0,ffff80003c459530) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603
syscall(ffff80003c4595e0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4595e0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xec60a2321a0, count: -17