diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2021-04-30 08:58:16 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 21:20:39 +0300 |
| commit | 0c95cba4925509c13fce6278456a0badb9e49775 (patch) | |
| tree | 332b7e2bc8c7e33a78d4ac12f4e25bda69bf475c /mm/vmalloc.c | |
| parent | c0eb315ad9719e41ce44708455cc69df7ac9f3f8 (diff) | |
| download | linux-0c95cba4925509c13fce6278456a0badb9e49775.tar.xz | |
mm: apply_to_pte_range warn and fail if a large pte is encountered
apply_to_pte_range might mistake a large pte for bad, or treat it as a
page table, resulting in a crash or corruption. Add a test to warn and
return error if large entries are found.
Link: https://lkml.kernel.org/r/20210317062402.533919-4-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ding Tianhong <dingtianhong@huawei.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmalloc.c')
0 files changed, 0 insertions, 0 deletions