uvm_fault(fffffd806bf9dc60,ab5000,0,2) at uvm_fault+0xf5 sys/uvm/uvm_fault.c:600
kpageflttrap(ffff8000371ec270,ab5980) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279
kerntrap(ffff8000371ec270) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyout() at copyout+0x57
syscall(ffff8000371ec6c0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff8000371ec6c0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x21e80b00510, count: -17
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(fffffd806cced5f8,9,0) at witness_checkorder+0x1047
rw_enter(fffffd806cced5e8,1) at rw_enter+0x122
rrw_enter(fffffd806cced5e8,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd8077ebebd0,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
vn_lock(fffffd8077ebebd0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564
vn_closefile(fffffd806aaa4000,ffff80002a03e020) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806aaa4000,ffff80002a03e020) at vn_closefile+0x111 sys/kern/vfs_vnops.c:609
fdrop(fffffd806aaa4000,ffff80002a03e020) at fdrop+0x126 sys/kern/kern_descrip.c:1274
knote_remove(ffff80002a03e020,fffffd806ecb81b0,fffffd806ecb8238,3,0) at knote_remove+0x403 sys/kern/kern_event.c:2014
knote_fdclose(ffff80002a03e020,3) at knote_fdclose+0xf9 sys/kern/kern_event.c:2049
fdrelease(ffff80002a03e020,3) at fdrelease+0xf6 sys/kern/kern_descrip.c:758
syscall(ffff8000371cc0e0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline]
syscall(ffff8000371cc0e0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbe913108820, count: -13