[PATCH 0/2] Fix the bug that function never be patched, if the name is larger than KSYM_NAME_LEN-1
From: Minfei Huang
Date: Sun Apr 12 2015 - 09:21:28 EST
For now, the kallsyms will only store the first (KSYM_NAME_LEN-1). The
kallsyms name is same for the function which first (KSYM_NAME_LEN-1) is
same, but the rest is not.
Livepatch will verify the function name to confirm the patch is
validation or not for extra module. Once the function name is larger
than (KSYM_NAME_LEN-1), the function never be patched, although
function name and address provided both, according to above verification.
Now, livepatch will verify the function name with first (KSYM_NAME_LEN-1)
and address, if provided. Once they are matched, we can confirm that the
patched function is found.
Minfei Huang (2):
livepatch: Add a new function to verify the address and name match for
livepatch: Fix the bug if the function name is larger than
kernel/livepatch/core.c | 55 ++++++++++++++++++++++++++++++++++---------------
1 file changed, 38 insertions(+), 17 deletions(-)
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/