uvm_fault(fffffd806c6d5d70,614acf24000,0,2) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80003179cae0,614acf24000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003179cae0) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7564d2619c60, count: -15
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(fffffd80701dbdd0,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd80701dbdb8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd80701dbdb8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd805f3b2008,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
vn_lock(fffffd805f3b2008,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:576
vfs_getcwd_common(fffffd805f3b2008,fffffd805f3b2368,0,0,200,0,e7b597dedfe27370) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd805f3b2008,fffffd805f3b2368,ffff80003c405cb0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:700
unp_externalize(fffffd806cb7e800,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff800001636028,ffff80003c3c8898,ffff80003c3c8848,0,ffff80003c3c8880,ffff80003c3c8a0c,fd92278f6628bc95) at soreceive+0xc24 sys/kern/uipc_socket.c:1029
recvit(ffff80003c405cb0,4,ffff80003c3c89e0,0,ffff80003c3c8a90) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff80003c405cb0,ffff80003c3c8b40,ffff80003c3c8a90) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff80003c3c8b40) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3c8b40) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6148094de50, count: -14