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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
module: Make .static_call_sites read-only after init
Section .static_call_sites holds data structures that need to be sorted and
processed only at module load time. This initial processing happens in
static_call_add_module(), which is invoked as a callback to the
MODULE_STATE_COMING notification from prepare_coming_module().
The section is never modified afterwards. Make it therefore read-only after
module initialization to avoid any (non-)accidental modifications.
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20250306131430.7016-4-petr.pavlu@suse.com
Signed-off-by: Petr Pavlu <petr.pavlu@suse.com>
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+9
kernel/module/strict_rwx.c
+9
kernel/module/strict_rwx.c
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* section, which are marked as such at module load time.
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*/
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"__jump_table",
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#ifdef CONFIG_HAVE_STATIC_CALL_INLINE
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/*
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* Section .static_call_sites holds data structures that need to be
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* sorted and processed at module load time but are never modified
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* afterwards.
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*/
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".static_call_sites",
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#endif
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};
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void module_mark_ro_after_init(const Elf_Ehdr *hdr, Elf_Shdr *sechdrs,