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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-03-21 08:24:11 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-03-21 13:35:38 +0100 |
| commit | b7fef2dd7217d9e3f35c948e87297451e55c9709 (patch) | |
| tree | 87bd5f483725152ca3f80046fd26517a9fc9068a /arch/um | |
| parent | 94f9852de86447088e8e3c12d8b5a8f996acee32 (diff) | |
s390/uaccess: fix clear_user_pt()
The page table walker variant of clear_user() is supposed to copy the
contents of the empty zero page to user space.
However since 238ec4ef "[S390] zero page cache synonyms" empty_zero_page
is not anymore the page itself but contains the pointer to the empty zero
pages. Therefore the page table walker variant of clear_user() copied
the address of the first empty zero page and afterwards more or less
random data to user space instead of clearing the given user space range.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/um')
0 files changed, 0 insertions, 0 deletions