5.15-stable review patch. If anyone has any objections, please let me know.
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From: James Morse james.morse@arm.com
commit a6846234f45801441f0e31a8b37f901ef0abd2df upstream.
Today module_frob_arch_sections() spots init sections from their 'init' prefix, and uses this to keep the init PLTs separate from the rest.
get_module_plt() uses within_module_init() to determine if a location is in the init text or not, but this depends on whether core code thought this was an init section.
Naturally the logic is different.
module_init_layout_section() groups the init and exit text together if module unloading is disabled, as the exit code will never run. The result is kernels with this configuration can't load all their modules because there are not enough PLTs for the combined init+exit section.
A previous patch exposed module_init_layout_section(), use that so the logic is the same.
Fixes: 055f23b74b20 ("module: check for exit sections in layout_sections() instead of module_init_section()") Cc: stable@vger.kernel.org Signed-off-by: James Morse james.morse@arm.com Signed-off-by: Luis Chamberlain mcgrof@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm/kernel/module-plts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/kernel/module-plts.c +++ b/arch/arm/kernel/module-plts.c @@ -256,7 +256,7 @@ int module_frob_arch_sections(Elf_Ehdr * /* sort by type and symbol index */ sort(rels, numrels, sizeof(Elf32_Rel), cmp_rel, NULL);
- if (strncmp(secstrings + dstsec->sh_name, ".init", 5) != 0) + if (!module_init_layout_section(secstrings + dstsec->sh_name)) core_plts += count_plts(syms, dstsec->sh_addr, rels, numrels, s->sh_info); else