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module: Rework layout alignment to avoid BUG_ON()s

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Perform layout alignment verification up front and WARN_ON()
and fail module loading instead of crashing the machine.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
This commit is contained in:
Christophe Leroy
2022-02-23 10:01:00 +01:00
committed by Luis Chamberlain
parent 32a08c17d8
commit ef505058dc
3 changed files with 24 additions and 9 deletions
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1
kernel/module/internal.h
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@@ -180,6 +180,7 @@ void module_enable_nx(const struct module *mod);
void module_enable_x(const struct module *mod);
int module_enforce_rwx_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
char *secstrings, struct module *mod);
bool module_check_misalignment(const struct module *mod);
#ifdef CONFIG_MODULE_SIG
int module_sig_check(struct load_info *info, int flags);