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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 /drivers/s390/char/tty3270.c | |
| parent | s390/scm_blk: fix error return code in scm_blk_init() (diff) | |
| download | wireguard-linux-b7fef2dd7217d9e3f35c948e87297451e55c9709.tar.xz wireguard-linux-b7fef2dd7217d9e3f35c948e87297451e55c9709.zip | |
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 'drivers/s390/char/tty3270.c')
0 files changed, 0 insertions, 0 deletions