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[1/3] arm64: mte: Fix double-freeing of the temporary tag storage during coredump

Message ID 20221222181251.1345752-2-catalin.marinas@arm.com (mailing list archive)
State New, archived
Headers show
Series arm64: mte: Coredump fixes | expand

Commit Message

Catalin Marinas Dec. 22, 2022, 6:12 p.m. UTC 
Commit 16decce22efa ("arm64: mte: Fix the stack frame size warning in
mte_dump_tag_range()") moved the temporary tag storage array from the
stack to slab but it also introduced an error in double freeing this
object. Remove the in-loop freeing.

Fixes: 16decce22efa ("arm64: mte: Fix the stack frame size warning in mte_dump_tag_range()")
Cc: <stable@vger.kernel.org> # 5.18.x
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Seth Jenkins <sethjenkins@google.com>
Cc: Will Deacon <will@kernel.org>
---
 arch/arm64/kernel/elfcore.c | 1 -
 1 file changed, 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm64/kernel/elfcore.c b/arch/arm64/kernel/elfcore.c
index 27ef7ad3ffd2..4e3f84799669 100644
--- a/arch/arm64/kernel/elfcore.c
+++ b/arch/arm64/kernel/elfcore.c
@@ -65,7 +65,6 @@  static int mte_dump_tag_range(struct coredump_params *cprm,
 		mte_save_page_tags(page_address(page), tags);
 		put_page(page);
 		if (!dump_emit(cprm, tags, MTE_PAGE_TAG_STORAGE)) {
-			mte_free_tag_storage(tags);
 			ret = 0;
 			break;
 		}