The patch titled Subject: module: release codetag section when module load fails has been added to the -mm mm-hotfixes-unstable branch. Its filename is module-release-codetag-section-when-module-load-fails.patch
This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...
This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------ From: David Wang 00107082@163.com Subject: module: release codetag section when module load fails Date: Tue, 20 May 2025 00:38:23 +0800
When module load fails after memory for codetag section is ready, codetag section memory will not be properly released. This causes memory leak, and if next module load happens to get the same module address, codetag may pick the uninitialized section when manipulating tags during module unload, and leads to "unable to handle page fault" BUG.
Link: https://lkml.kernel.org/r/20250519163823.7540-1-00107082@163.com Fixes: 0db6f8d7820a ("alloc_tag: load module tags into separate contiguous memory") Closes: https://lore.kernel.org/all/20250516131246.6244-1-00107082@163.com/ Signed-off-by: David Wang 00107082@163.com Acked-by: Suren Baghdasaryan surenb@google.com Cc: Petr Pavlu petr.pavlu@suse.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
kernel/module/main.c | 1 + 1 file changed, 1 insertion(+)
--- a/kernel/module/main.c~module-release-codetag-section-when-module-load-fails +++ a/kernel/module/main.c @@ -2829,6 +2829,7 @@ static void module_deallocate(struct mod { percpu_modfree(mod); module_arch_freeing_init(mod); + codetag_free_module_sections(mod);
free_mod_mem(mod); } _
Patches currently in -mm which might be from 00107082@163.com are
module-release-codetag-section-when-module-load-fails.patch