diff options
| author | Stefan O'Rear <sorear2@gmail.com> | 2018-12-16 13:03:36 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-20 10:25:46 +0100 |
| commit | 2ab1483852b3502235c3496c09ecbc5808bdecf8 (patch) | |
| tree | 936d32da3108796a1527b016a10d06f26e8ca0ec /include/linux/genalloc.h | |
| parent | 22d6e72bb566880b37058587f504a7884ea4192f (diff) | |
riscv: Add pte bit to distinguish swap from invalid
commit e3613bb8afc2a9474c9214d65c8326c5ac02135e upstream.
Previously, invalid PTEs and swap PTEs had the same binary
representation, causing errors when attempting to unmap PROT_NONE
mappings, including implicit unmap on exit.
Typical error:
swap_info_get: Bad swap file entry 40000000007a9879
BUG: Bad page map in process a.out pte:3d4c3cc0 pmd:3e521401
Cc: stable@vger.kernel.org
Signed-off-by: Stefan O'Rear <sorear2@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/genalloc.h')
0 files changed, 0 insertions, 0 deletions