Re: [PATCH 1/4] counter: Internalize sysfs interface code (fwd)

[Julia Lawall]

Hello,

Normally, the argument of kfree should not start with &.

julia

---------- Forwarded message ----------
Date: Fri, 1 May 2020 06:07:26 +0800
From: kbuild test robot <lkp@xxxxxxxxx>
To: kbuild@xxxxxxxxxxxx
Cc: lkp@xxxxxxxxx, Julia Lawall <julia.lawall@xxxxxxx>
Subject: Re: [PATCH 1/4] counter: Internalize sysfs interface code

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TO: William Breathitt Gray <vilhelm.gray@xxxxxxxxx>
TO: jic23@xxxxxxxxxx
CC: kamel.bouhara@xxxxxxxxxxx
CC: gwendal@xxxxxxxxxxxx
CC: alexandre.belloni@xxxxxxxxxxx
CC: david@xxxxxxxxxxxxxx
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Hi William,

I love your patch! Perhaps something to improve:

[auto build test WARNING on stm32/stm32-next]
[cannot apply to linus/master linux/master v5.7-rc3 next-20200430]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/William-Breathitt-Gray/Introduce-the-Counter-character-device-interface/20200430-051734
base:   https://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32.git stm32-next
:::::: branch date: 25 hours ago
:::::: commit date: 25 hours ago

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Reported-by: Julia Lawall <julia.lawall@xxxxxxx>


coccinelle warnings: (new ones prefixed by >>)

>> drivers/counter/counter-core.c:26:1-6: ERROR: invalid free of structure field

# https://github.com/0day-ci/linux/commit/bdd9a6aa70c61f16dacaf057f0ce70fc210b5ec9
git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout bdd9a6aa70c61f16dacaf057f0ce70fc210b5ec9
vim +26 drivers/counter/counter-core.c

bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29  20
bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29  21  static void counter_device_release(struct device *dev)
bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29  22  {
bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29  23  	struct counter_device *const counter = dev_get_drvdata(dev);
bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29  24
bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29  25  	counter_sysfs_free(counter);
bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29 @26  	kfree(&counter->dev);
bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29  27  	ida_simple_remove(&counter_ida, counter->id);
bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29  28  }
bdd9a6aa70c61f1 William Breathitt Gray 2020-04-29  29

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