Messages in this thread | | | From | Minfei Huang <> | Subject | [PATCH 0/2] Fix the bug that function never be patched, if the name is larger than KSYM_NAME_LEN-1 | Date | Sun, 12 Apr 2015 21:15:52 +0800 |
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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 patched module livepatch: Fix the bug if the function name is larger than KSYM_NAME_LEN-1
kernel/livepatch/core.c | 55 ++++++++++++++++++++++++++++++++++--------------- 1 file changed, 38 insertions(+), 17 deletions(-)
-- 2.2.2
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