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sections: Fix __is_kernel() to include init ranges

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With CONFIG_KALLSYMS_ALL=y, the function is_ksym_addr() is used to
determine if a symbol is from inside the kernel range. For that the
given symbol address is checked if it's inside the _stext to _end range.

Although this is correct, some architectures (e.g. parisc) may have the
init area before the _stext address and as such the check in
is_ksym_addr() fails.  By extending the range check to include the init
section, __is_kernel() will now detect symbols in this range as well.

This fixes an issue on parisc where addresses of kernel functions in
init sections aren't resolved to their symbol names.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2022-01-07 01:13:02 +01:00
parent e486288d11
commit 16f035d9e2
1 changed files with 7 additions and 3 deletions
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10
include/asm-generic/sections.h
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@ -193,12 +193,16 @@ static inline bool __is_kernel_text(unsigned long addr)
* @addr: address to check
*
* Returns: true if the address is located in the kernel range, false otherwise.
* Note: an internal helper, only check the range of _stext to _end.
* Note: an internal helper, check the range of _stext to _end,
* and range from __init_begin to __init_end, which can be outside
* of the _stext to _end range.
*/
static inline bool __is_kernel(unsigned long addr)
{
return addr >= (unsigned long)_stext &&
addr < (unsigned long)_end;
return ((addr >= (unsigned long)_stext &&
addr < (unsigned long)_end) ||
(addr >= (unsigned long)__init_begin &&
addr < (unsigned long)__init_end));
}
#endif /* _ASM_GENERIC_SECTIONS_H_ */