diff options
| author | Gui-Dong Han <hanguidong02@gmail.com> | 2025-11-28 20:38:16 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-02 12:57:30 +0100 |
| commit | 4fc2f8fbfdd43257c9a90b6730e80c0dc952575c (patch) | |
| tree | ddd414c9e3ac481b8ad2f6bc57b3834c417ba5c8 /include/net/aligned_data.h | |
| parent | c8cf0c2bdcccc6634b6915ff793b844e12436680 (diff) | |
hwmon: (w83l786ng) Convert macros to functions to avoid TOCTOU
commit 07272e883fc61574b8367d44de48917f622cdd83 upstream.
The macros FAN_FROM_REG and TEMP_FROM_REG evaluate their arguments
multiple times. When used in lockless contexts involving shared driver
data, this causes Time-of-Check to Time-of-Use (TOCTOU) race
conditions.
Convert the macros to static functions. This guarantees that arguments
are evaluated only once (pass-by-value), preventing the race
conditions.
Adhere to the principle of minimal changes by only converting macros
that evaluate arguments multiple times and are used in lockless
contexts.
Link: https://lore.kernel.org/all/CALbr=LYJ_ehtp53HXEVkSpYoub+XYSTU8Rg=o1xxMJ8=5z8B-g@mail.gmail.com/
Fixes: 85f03bccd6e0 ("hwmon: Add support for Winbond W83L786NG/NR")
Cc: stable@vger.kernel.org
Signed-off-by: Gui-Dong Han <hanguidong02@gmail.com>
Link: https://lore.kernel.org/r/20251128123816.3670-1-hanguidong02@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/net/aligned_data.h')
0 files changed, 0 insertions, 0 deletions