On Wed, Feb 07, 2024 at 03:38:43PM +0100, Javier Carrasco wrote: > Hello again Dan, > > On 07.02.24 10:51, Dan Carpenter wrote: > > Hello Javier Carrasco, > > > > The patch 33c41faa98f3: "hwmon: Add support for Amphenol ChipCap 2" > > from Jan 30, 2024 (linux-next), leads to the following Smatch static > > checker warning: > > > > drivers/hwmon/chipcap2.c:327 cc2_get_reg_val() error: uninitialized symbol 'reg_val'. > > drivers/hwmon/chipcap2.c:695 cc2_request_alarm_irqs() error: uninitialized symbol 'ret'. > > > > may I ask you what Smatch configuration/arguments you used to find the > first warning? I tried kchecker without arguments (with --sparse nothing > was found), and only the second warning is reported: > > ~/smatch/smatch_scripts/kchecker drivers/hwmon/chipcap2.c > > CHECK scripts/mod/empty.c > CALL scripts/checksyscalls.sh > CC drivers/hwmon/chipcap2.o > CHECK drivers/hwmon/chipcap2.c > drivers/hwmon/chipcap2.c:695 cc2_request_alarm_irqs() error: > uninitialized symbol 'ret'. > > I have checked out the current status of the master branch: > > 7162b9ec99f71 double_fget: warn about re-using file descriptors > > And of course, the first bug was not removed from the code. The first warning requires the cross function database to work. It's a simple process but it takes probably 6 hours... ~/smatch/devel/smatch_scripts/build_kernel_data.sh regards, dan carpenter
