hwmon: (nct6775-platform) Explicitly initialize nct6775_sio_names indexes
Changing the "kinds" enum start value to be 1-indexed instead of
0-indexed caused look-ups in nct6775_sio_namesp[] to be misaligned or
off the end. Coverity reported:
*** CID
1571052: Memory - illegal accesses (OVERRUN)
drivers/hwmon/nct6775-platform.c:1075 in nct6775_find()
1069 sio_data->kind == nct6793 || sio_data->kind == nct6795 ||
1070 sio_data->kind == nct6796 || sio_data->kind == nct6797 ||
1071 sio_data->kind == nct6798 || sio_data->kind == nct6799)
1072 nct6791_enable_io_mapping(sio_data);
1073
1074 sio_data->sio_exit(sio_data);
vvv CID
1571052: Memory - illegal accesses (OVERRUN)
vvv Overrunning array "nct6775_sio_names" of 13 8-byte elements at element index 13 (byte offset 111) using index "sio_data->kind" (which evaluates to 13).
1075 pr_info("Found %s or compatible chip at %#x:%#x\n",
1076 nct6775_sio_names[sio_data->kind], sioaddr, addr);
1077
1078 return addr;
1079 }
1080
Initialize the string list with explicit indexes.
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Rob Herring <robh@kernel.org>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: linux-hwmon@vger.kernel.org
Fixes: 10a0575ea09d ("hwmon: nct6775-i2c: Use i2c_get_match_data()")
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20231116140144.work.027-kees@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>