uvm_fault(fffffd806a9f41e0,2381305a000,0,1) at uvm_fault+0x1ed sys/uvm/uvm_fault.c:622 upageflttrap(ffff8000371b5220,2381305a000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff8000371b5220) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7e9d9617f420, 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:437 witness_checkorder(fffffd806fabdb38,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806fabdb28,1) at rw_enter+0x122 rrw_enter(fffffd806fabdb28,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd806a5036d0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806a5036d0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff800037296d68) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff800037296d68) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fda540,fffffd805f9c0400,ffff8000345ae040) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff800010fda540,fffffd806a1a3200,fffffd805f9c0400,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff800010fda540,fffffd805f9c0400,ffff800037296ff8,0,0,0) at sosend+0xa40 sendit(ffff8000345ae040,7,ffff800037297170,0,ffff800037297230) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff8000345ae040,ffff8000372972e0,ffff800037297230) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff8000372972e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000372972e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x66dafe64980, count: -15