[PATCH 2.6] hwmon: Off-by-one error in fscpos driver

[Jean Delvare <khali@linux-fr.org>]

Hi Linus, all,

Coverity uncovered an off-by-one error in the fscpos driver, in function
set_temp_reset(). Writing to the temp3_reset sysfs file will lead to an
array overrun, in turn causing an I2C write to a random register of the
FSC Poseidon chip. Additionally, writing to temp1_reset and temp2_reset
will not work as expected. The fix is straightforward.

This patch is a candidate for 2.6.13 (or 2.6.13.1 if it's too late for
2.6.13.)

Thanks.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

 drivers/hwmon/fscpos.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-2.6.13-rc7.orig/drivers/hwmon/fscpos.c	2005-08-25 18:21:37.000000000 +0200
+++ linux-2.6.13-rc7/drivers/hwmon/fscpos.c	2005-08-25 18:22:09.000000000 +0200
@@ -167,7 +167,7 @@
 				"experience to the module author.\n");
 
 	/* Supported value: 2 (clears the status) */
-	fscpos_write_value(client, FSCPOS_REG_TEMP_STATE[nr], 2);
+	fscpos_write_value(client, FSCPOS_REG_TEMP_STATE[nr - 1], 2);
 	return count;
 }
 

-- 
Jean Delvare
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/