uvm_fault(fffffd800b0271e8,3fd000,0,2) at uvm_fault+0x106 sys/uvm/uvm_fault.c:677
kpageflttrap(ffff80003c50f170,3fd040) at kpageflttrap+0x2f4 sys/arch/amd64/amd64/trap.c:283
kerntrap(ffff80003c50f170) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:491
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
copyout() at copyout+0x57
syscall(ffff80003c50f5b0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c50f5b0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb1ec4a07250, count: -18
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(fffffd806e0ca340,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1
rw_do_enter_write(fffffd806e0ca328,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234
rrw_enter(fffffd806e0ca328,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
VOP_LOCK(fffffd806e0c9558,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527
vn_lock(fffffd806e0c9558,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570
vn_closefile(fffffd806bb8b528,ffff80003900b788) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806bb8b528,ffff80003900b788) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615
fdrop(fffffd806bb8b528,ffff80003900b788) at fdrop+0x121 sys/kern/kern_descrip.c:1280
knote_remove(ffff80003900b788,fffffd806ef23e00,fffffd806ef23e90,3,0) at knote_remove+0x449 sys/kern/kern_event.c:2168
knote_fdclose(ffff80003900b788,3) at knote_fdclose+0xf9 sys/kern/kern_event.c:2203
fdrelease(ffff80003900b788,3) at fdrelease+0xf9 sys/kern/kern_descrip.c:760
syscall(ffff80003c4e7180) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4e7180) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x80167c97090, count: -13