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| author |   Dmitry Kalinkin <dmitry.kalinkin@gmail.com> | 2015-05-28 15:07:03 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-06-12 17:26:57 -0700 |
| commit | e7fd80cbb4a788b2f8b081ab8564752073c30505 (patch) | |
| tree | 7fab41f759c64315ae96a26d341ca07073b09c09 /drivers/vme | |
| parent | staging: vme_user: refactor llseek to switch(){} (diff) | |
| download | linux-dev-e7fd80cbb4a788b2f8b081ab8564752073c30505.tar.xz linux-dev-e7fd80cbb4a788b2f8b081ab8564752073c30505.zip | |
vme: check for A64 overflow in vme_check_window()
Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Cc: Igor Alekseev <igor.alekseev@itep.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/vme')
| -rw-r--r-- | drivers/vme/vme.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/vme/vme.c b/drivers/vme/vme.c index 6bab2c4ed77c..1b78d27aa728 100644 --- a/drivers/vme/vme.c +++ b/drivers/vme/vme.c @@ -199,10 +199,8 @@ static int vme_check_window(u32 aspace, unsigned long long vme_base, retval = -EFAULT; break; case VME_A64: - /* - * Any value held in an unsigned long long can be used as the - * base - */ + if ((size != 0) && (vme_base > U64_MAX + 1 - size)) + retval = -EFAULT; break; case VME_CRCSR: if (((vme_base + size) > VME_CRCSR_MAX) || |