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| author | Luiz Angelo Daros de Luca <luizluca@gmail.com> | 2026-07-27 21:22:23 -0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2026-07-27 17:58:05 -0700 |
| commit | 1b46fe9dc8f8de59310f37e6c5e5c0e05ded46c3 (patch) | |
| tree | ab6e25aaca5fe3c1494504eac404d8f87f585ed5 /tools/perf/scripts/python | |
| parent | 60677cd4c28f44d5b307d3029dccece38fcce90f (diff) | |
hwmon: (adt7470) Fix divide-by-zero TOCTOU crash in fan speed read
If the fan data becomes 0 between the FAN_DATA_VALID() check and the
FAN_PERIOD_TO_RPM() conversion, it will result in a divide-by-zero crash
due to a race with a concurrent update of the cached fan value.
Fix a TOCTOU issue by reading fan data once.
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/r/20260727034929.E29B71F000E9@smtp.kernel.org/
Fixes: fc958a61ff6d ("hwmon: (adt7470) Convert to devm_hwmon_device_register_with_info API")
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Link: https://lore.kernel.org/r/20260727-adt7470_fixes-v2-7-598e38a46ba6@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions