uvm_fault(fffffd805f7ee5e0,c91e5a5d000,0,2) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:656
upageflttrap(ffff800030fef440,c91e5a5d000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800030fef440) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x799087c133b0, count: -11
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(fffffd8068cea7d8,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd8068cea7c0,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd8068cea7c0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd806b0aa468,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd806b0aa468,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vfs_getcwd_common(fffffd806b0aa468,fffffd806b0aa108,0,0,200,0,99b2122d641a05bf) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287
vn_isunder(fffffd806b0aa468,fffffd806b0aa108,ffff80003c4e74f8) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694
unp_externalize(fffffd806cd99d00,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090
soreceive(ffff8000014b0c10,ffff80003c4ecf98,ffff80003c4ecf48,0,ffff80003c4ecf80,ffff80003c4ed10c,e97d7df6114dc6ad) at soreceive+0xc24 sys/kern/uipc_socket.c:1009
recvit(ffff80003c4e74f8,4,ffff80003c4ed0e0,0,ffff80003c4ed190) at recvit+0x40b sys/kern/uipc_syscalls.c:1078
sys_recvmsg(ffff80003c4e74f8,ffff80003c4ed240,ffff80003c4ed190) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878
syscall(ffff80003c4ed240) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4ed240) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe35f5734190, count: -14