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| author | Luiz Sampaio <sampaio.ime@gmail.com> | 2021-11-10 01:07:32 +0300 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2021-11-24 13:46:52 +0300 |
| commit | 4daa9ff89ef27be43c15995412d6aee393a78200 (patch) | |
| tree | 6be42ed28dfed32cd06e1bfcf334246827a8bd3a /security | |
| parent | 94047df12fec0e51e860b5317223f67a3ea4eb07 (diff) | |
| download | linux-4daa9ff89ef27be43c15995412d6aee393a78200.tar.xz | |
auxdisplay: charlcd: checking for pointer reference before dereferencing
Check if the pointer lcd->ops->init_display exists before dereferencing it.
If a driver called charlcd_init() without defining the ops, this would
return segmentation fault, as happened to me when implementing a charlcd
driver. Checking the pointer before dereferencing protects from
segmentation fault.
Signed-off-by: Luiz Sampaio <sampaio.ime@gmail.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions