| Message ID | E1X6HWN-0006io-Od@rmk-PC.arm.linux.org.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Russell King <rmk+kernel@arm.linux.org.uk> writes: > 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. Yech... Applied. Thanks, Rusty. > Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> > --- > kernel/module.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/kernel/module.c b/kernel/module.c > index 81e727cf6df9..cecd78d06025 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] == '$' && strchr("atd", str[1]) > && (str[2] == '\0' || str[2] == '.'); > } > -- > 1.8.3.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
diff --git a/kernel/module.c b/kernel/module.c index 81e727cf6df9..cecd78d06025 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -3385,6 +3385,8 @@ static inline int within(unsigned long addr, void *start, unsigned long size) */ static inline int is_arm_mapping_symbol(const char *str) { + if (str[0] == '.' && str[1] == 'L') + return true; return str[0] == '$' && strchr("atd", str[1]) && (str[2] == '\0' || str[2] == '.'); }
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> --- kernel/module.c | 2 ++ 1 file changed, 2 insertions(+)