Re: [PATCH 1/1] scripts: Fixing NULL pointer dereference when pos->file is NULL

From: Arnd Bergmann
Date: Tue Nov 29 2016 - 06:16:08 EST


On Tuesday, November 29, 2016 4:04:59 PM CET Maninder Singh wrote:
> This patch fixes NULL pointer dereference when pos->file is NULL.
>
> caught with static analysis tool.
> Signed-off-by: Maninder Singh <maninder1.s@xxxxxxxxxxx>
> Signed-off-by: Vaneet Narang <v.narang@xxxxxxxxxxx>
> ---
> scripts/dtc/srcpos.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/scripts/dtc/srcpos.c b/scripts/dtc/srcpos.c
> index f534c22..360fd14 100644
> --- a/scripts/dtc/srcpos.c
> +++ b/scripts/dtc/srcpos.c
> @@ -252,12 +252,11 @@ struct srcpos *
> srcpos_dump(struct srcpos *pos)
> {
> printf("file : \"%s\"\n",
> - pos->file ? (char *) pos->file : "<no file>");
> + pos->file ? pos->file->name : "<no file>");
> printf("first_line : %d\n", pos->first_line);
>

The patch looks right, but the description doesn't seem to
match the bug.

Arnd