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From: Dan Carpenter <dan.carpenter@linaro.org>
To: Nathan Chancellor <nathan@kernel.org>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>,
	kernel test robot <lkp@intel.com>,
	Guenter Roeck <linux@roeck-us.net>,
	llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
	linux-hwmon@vger.kernel.org
Subject: Re: [groeck-staging:hwmon-next 13/13] drivers/hwmon/gpio-fan.c:250:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is false
Date: Thu, 10 Apr 2025 11:35:28 +0300	[thread overview]
Message-ID: <d80689a3-6055-449d-9475-5e8e4f1ddabf@stanley.mountain> (raw)
In-Reply-To: <20250409160250.GB1506425@ax162>

Another option is Smatch.

https://github.com/error27/smatch

:! ~/progs/smatch/release/smatch_scripts/kchecker drivers/hwmon/gpio-fan.c
  CHECK   scripts/mod/empty.c
  CALL    scripts/checksyscalls.sh
  DESCEND objtool
  INSTALL libsubcmd_headers
  CC      drivers/hwmon/gpio-fan.o
  CHECK   drivers/hwmon/gpio-fan.c
drivers/hwmon/gpio-fan.c:145 set_fan_speed() warn: potential spectre issue 'fan_data->speed' [w] (local cap)
drivers/hwmon/gpio-fan.c:255 pwm1_enable_store() error: uninitialized symbol 'ret'.

I don't think the spectre v1 issue is real but I don't know very much
about spectre.

regards,
dan carpenter


      reply	other threads:[~2025-04-10  8:35 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-09  2:11 [groeck-staging:hwmon-next 13/13] drivers/hwmon/gpio-fan.c:250:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is false kernel test robot
2025-04-09  2:51 ` Guenter Roeck
2025-04-09  6:50   ` Alexander Stein
2025-04-09 16:02     ` Nathan Chancellor
2025-04-10  8:35       ` Dan Carpenter [this message]

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