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| author | Alex Zhang <zhangalex@google.com> | 2020-08-07 08:22:24 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-07 20:33:26 +0200 |
| commit | 0c4123e3fb82d6014d0a70b52eb38153f658541c (patch) | |
| tree | 5c656de44bab39604512c9438a665f657b09aec6 /arch/powerpc/mm/init_32.c | |
| parent | mm: remove redundant check non_swap_entry() (diff) | |
| download | linux-0c4123e3fb82d6014d0a70b52eb38153f658541c.tar.xz linux-0c4123e3fb82d6014d0a70b52eb38153f658541c.zip | |
mm/memory.c: make remap_pfn_range() reject unaligned addr
This function implicitly assumes that the addr passed in is page aligned.
A non page aligned addr could ultimately cause a kernel bug in
remap_pte_range as the exit condition in the logic loop may never be
satisfied. This patch documents the need for the requirement, as well as
explicitly adds a check for it.
Signed-off-by: Alex Zhang <zhangalex@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200617233512.177519-1-zhangalex@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/powerpc/mm/init_32.c')
0 files changed, 0 insertions, 0 deletions