diff options
| author | Sang-Heon Jeon <ekffu200098@gmail.com> | 2026-07-01 00:04:10 +0900 |
|---|---|---|
| committer | Mike Rapoport (Microsoft) <rppt@kernel.org> | 2026-07-01 09:22:40 +0300 |
| commit | 3db1a9ccf9290ea3fe01aadf3bd743ef7032b24a (patch) | |
| tree | 089aa7d992f2fb1db439bca8933ac3f6ec3d868d /arch/arm | |
| parent | 8008f6995d0c0cf22e7b4d60e95fe14085c10f35 (diff) | |
ARM: remove unreachable invalid range check in kasan_init()
kasan_init() maps each memblock region with for_each_mem_range(), which
guarantees pa_start < pa_end. Then it skips any region with
pa_start >= arm_lowmem_limit, so pa_start < arm_lowmem_limit is guaranteed
as well.
When pa_end <= arm_lowmem_limit, pa_start < pa_end means start < end, so
the start >= end check is unreachable.
When pa_end > arm_lowmem_limit, end is clamped to __va(arm_lowmem_limit),
and pa_start < arm_lowmem_limit means start < end, so the check is
unreachable as well.
No functional change.
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Link: https://patch.msgid.link/20260630150413.1718632-6-ekffu200098@gmail.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mm/kasan_init.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/arm/mm/kasan_init.c b/arch/arm/mm/kasan_init.c index c6625e808bf8..1f7c74c5df9e 100644 --- a/arch/arm/mm/kasan_init.c +++ b/arch/arm/mm/kasan_init.c @@ -262,12 +262,6 @@ void __init kasan_init(void) &pa_start, &pa_end, &arm_lowmem_limit); end = __va(arm_lowmem_limit); } - if (start >= end) { - pr_info("Skipping invalid memory block %pa-%pa (virtual %p-%p)\n", - &pa_start, &pa_end, start, end); - continue; - } - create_mapping(start, end); } |