linux-kernel - [PATCH v2 0/2] Fixing bug that would segmentation fault

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Message-Id: <20211109220732.7973-1-sampaio.ime@gmail.com>
Date:   Tue,  9 Nov 2021 19:07:30 -0300
From:   Luiz Sampaio <sampaio.ime@...il.com>
To:     ojeda@...nel.org
Cc:     linux-kernel@...r.kernel.org, Luiz Sampaio <sampaio.ime@...il.com>
Subject: [PATCH v2 0/2] Fixing bug that would segmentation fault

This series of patches consists of one patch fixing a simple coding style
issue and one patch fixing a bug that would cause segmentation fault.
Basically, there was a pointer that was being dereferenced without testing
if the pointer exists. This patch adds a protection, returning EFAULT in
case the pointer is NULL.

Changes in v2:
- Changed return to -EINVAL and using WARN_ON as suggested 
- Note in response for Miguel's comment: for the first patch, I ran the
  script './scripts/checkpatch.pl --file --terse' to see with the file
had any coding style issue. That was when I was suggested to remove
'int' from 'unsigned long' declaration

Luiz Sampaio (2):
  auxdisplay: charlcd: fixing coding style issue
  auxdisplay: charlcd: checking for pointer reference before
    dereferencing

 drivers/auxdisplay/charlcd.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

-- 
2.33.1