Re: [PATCH] btf_encoder: Add O_TRUNC to btf_encoder__write_raw_file()

On 17/07/2026 19:01, Namhyung Kim wrote:
> 
> When it creates a raw file, it should truncate the content in case there
> is an old file with the same name.  Otherwise it may have some garbage
> at the end of the file and it could make the kernel fail to verify BTF.
> 
> Signed-off-by: Namhyung Kim <[email protected]>

Applied, thank you!

Alan

> ---
>  btf_encoder.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/btf_encoder.c b/btf_encoder.c
> index d36984a..b810dd5 100644
> --- a/btf_encoder.c
> +++ b/btf_encoder.c
> @@ -1878,7 +1878,7 @@ static int btf_encoder__write_raw_file(struct btf_encoder *encoder)
>  		return -1;
>  	}
>  
> -	fd = open(filename, O_WRONLY | O_CREAT, 0640);
> +	fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0640);
>  	if (fd < 0) {
>  		fprintf(stderr, "%s: Couldn't open %s for writing the raw BTF info: %s\n", __func__, filename, strerror(errno));
>  		return -1;
> -- 
> 2.55.0.229.g6434b31f56-goog
>