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| author | Guenter Roeck <linux@roeck-us.net> | 2026-08-21 07:49:15 -0700 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2026-08-23 07:39:34 -0700 |
| commit | 2c2739b719d32b99f72f60d26addd55258011bb2 (patch) | |
| tree | b4ea0c53f4a64d9c2079db7b226d555c8c286359 /scripts/objdiff | |
| parent | 04526e04a3c05db1f47c0c84d415c2400242dba2 (diff) | |
| download | linux-next-2c2739b719d32b99f72f60d26addd55258011bb2.tar.gz linux-next-2c2739b719d32b99f72f60d26addd55258011bb2.zip | |
hwmon: (sht4x) Add missing locks
Sashiko reports:
Heater sysfs callbacks (heater_enable_store, heater_power_store, and
heater_time_store) are exposed to data races without the hwmon lock.
If a user-space process reads hwmon data while another process enables
the heater, heater_enable_store() executes without holding
hwmon_lock(dev). This can interleave I2C commands and mutate shared
state (data->heating_complete and data->data_pending) concurrently
with sht4x_read_values(), leading to corrupted I2C sequences.
Fixes: 53dfa12299c1 ("hwmon: (sht4x) Rely on subsystem locking")
Cc: Alessandro Zini <alessandro.zini@siemens.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://patch.msgid.link/20260821144916.2889031-1-linux@roeck-us.net
Diffstat (limited to 'scripts/objdiff')
0 files changed, 0 insertions, 0 deletions