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authorLaura Abbott <lauraa@codeaurora.org>2015-02-25 14:14:55 -0800
committerCatalin Marinas <catalin.marinas@arm.com>2015-03-06 12:04:22 +0000
commit8b5f5a073fda33bbe96b3eb1bffca32010ccaf0e (patch)
tree655d442547f62b686977bc7e4f1772a26a87b79b /arch
parent13a7a6ac0a11197edcd0f756a035f472b42cdf8b (diff)
arm64: Don't use is_module_addr in setting page attributes
The set_memory_* functions currently only support module addresses. The addresses are validated using is_module_addr. That function is special though and relies on internal state in the module subsystem to work properly. At the time of module initialization and calling set_memory_*, it's too early for is_module_addr to work properly so it always returns false. Rather than be subject to the whims of the module state, just bounds check against the module virtual address range. Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/mm/pageattr.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm64/mm/pageattr.c b/arch/arm64/mm/pageattr.c
index bb0ea94c4ba1..1d3ec3ddd84b 100644
--- a/arch/arm64/mm/pageattr.c
+++ b/arch/arm64/mm/pageattr.c
@@ -51,7 +51,10 @@ static int change_memory_common(unsigned long addr, int numpages,
WARN_ON_ONCE(1);
}
- if (!is_module_address(start) || !is_module_address(end - 1))
+ if (start < MODULES_VADDR || start >= MODULES_END)
+ return -EINVAL;
+
+ if (end < MODULES_VADDR || end >= MODULES_END)
return -EINVAL;
data.set_mask = set_mask;