AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-02 16:46:41 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

rt2x00: fix memory corruption in rf cache, add a sanity check

Browse Source 
Change rt2x00_rf_read() and rt2x00_rf_write() to subtract 1 from the rf
register number.  This is needed because the rf registers are enumerated
starting with one.  The size of the rf register cache is just enough to
hold all registers, so writing to the highest register was corrupting
memory.  Add a check to make sure that the rf register number is valid.

Signed-off-by: Pavel Roskin <proski@gnu.org>
Cc: stable@kernel.org
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Pavel Roskin 2009-08-04 17:48:16 -04:00 committed by John W. Linville
parent 416fbdff21
commit 6b26dead3c
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/rt2x00/rt2x00.h
View File

@ -849,13 +849,15 @@ struct rt2x00_dev {
static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
const unsigned int word, u32 *data)
{
*data = rt2x00dev->rf[word];
BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
*data = rt2x00dev->rf[word - 1];
}
static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
const unsigned int word, u32 data)
{
rt2x00dev->rf[word] = data;
BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
rt2x00dev->rf[word - 1] = data;
}
/*