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module: allow arch overrides for .exit section names

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Some archs like ARM store unwind information for .exit.text in sections
with unusual names. As this unwind information refers to .exit.text, it
must not be loaded when .exit.text is not loaded (when CONFIG_MODULE_UNLOAD
is unset); otherwise, loading a module can fail due to relocation failures.

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
This commit is contained in:
Matthias Schiffer 2019-06-07 12:49:11 +02:00 • committed by Jessica Yu
parent 2eef1399a8
commit 38b37d631a
2 changed files with 11 additions and 1 deletions
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5
include/linux/moduleloader.h
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@ -29,6 +29,11 @@ void *module_alloc(unsigned long size);
/* Free memory returned from module_alloc. */
void module_memfree(void *module_region);
/* Determines if the section name is an exit section (that is only used during
* module unloading)
*/
bool module_exit_section(const char *name);
/*
* Apply the given relocation to the (simplified) ELF. Return -error
* or 0.