arm64/pageattr: Propagate return value from __change_memory_common

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[ Upstream commit e5efd56fa1 ]

The rodata=on security measure requires that any code path which does
vmalloc -> set_memory_ro/set_memory_rox must protect the linear map alias
too. Therefore, if such a call fails, we must abort set_memory_* and caller
must take appropriate action; currently we are suppressing the error, and
there is a real chance of such an error arising post commit a166563e7e
("arm64: mm: support large block mapping when rodata=full"). Therefore,
propagate any error to the caller.

Fixes: a166563e7e ("arm64: mm: support large block mapping when rodata=full")
Signed-off-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Dev Jain 2025-11-12 11:57:15 +05:30 • committed by Greg Kroah-Hartman

parent 81841da1f3

commit 3e2fc1e57a

1 changed files with 4 additions and 1 deletions

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arch/arm64/mm/pageattr.c

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