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authorRussell King <rmk+kernel@arm.linux.org.uk>2014-07-27 07:29:01 +0930
committerRusty Russell <rusty@rustcorp.com.au>2014-07-27 20:52:47 +0930
commit2e3a10a1551d6ceea005e6a62ca58183b8976217 (patch)
tree1f5da7e582eaa35bd684117d11e18ebc7686c912 /kernel/module.c
parenta0d8f8037468a3b5f964417f71853ccf301b9f39 (diff)
downloadop-kernel-dev-2e3a10a1551d6ceea005e6a62ca58183b8976217.zip
op-kernel-dev-2e3a10a1551d6ceea005e6a62ca58183b8976217.tar.gz
ARM: avoid ARM binutils leaking ELF local symbols
Symbols starting with .L are ELF local symbols and should not appear in ELF symbol tables. However, unfortunately ARM binutils leaks the .LANCHOR symbols into the symbol table, which leads kallsyms to report these symbols rather than the real name. It is not very useful when %pf reports symbols against these leaked .LANCHOR symbols. Arrange for kallsyms to ignore these symbols using the same mechanism that is used for the ARM mapping symbols. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'kernel/module.c')
-rw-r--r--kernel/module.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/module.c b/kernel/module.c
index e87fdd2..cd9bce9 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3385,6 +3385,8 @@ static inline int within(unsigned long addr, void *start, unsigned long size)
*/
static inline int is_arm_mapping_symbol(const char *str)
{
+ if (str[0] == '.' && str[1] == 'L')
+ return true;
return str[0] == '$' && strchr("atd", str[1])
&& (str[2] == '\0' || str[2] == '.');
}
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