diff options
Diffstat (limited to 'sys/vm/vm_glue.c')
| -rw-r--r-- | sys/vm/vm_glue.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/vm/vm_glue.c b/sys/vm/vm_glue.c index 6e2872f..2dda5f8 100644 --- a/sys/vm/vm_glue.c +++ b/sys/vm/vm_glue.c @@ -144,7 +144,9 @@ kernacc(addr, len, rw) prot = rw; saddr = trunc_page((vm_offset_t)addr); eaddr = round_page((vm_offset_t)addr + len); + vm_map_lock_read(kernel_map); rv = vm_map_check_protection(kernel_map, saddr, eaddr, prot); + vm_map_unlock_read(kernel_map); return (rv == TRUE); } @@ -174,8 +176,10 @@ useracc(addr, len, rw) (vm_offset_t)addr + len < (vm_offset_t)addr) { return (FALSE); } + vm_map_lock_read(map); rv = vm_map_check_protection(map, trunc_page((vm_offset_t)addr), round_page((vm_offset_t)addr + len), prot); + vm_map_unlock_read(map); return (rv == TRUE); } |
