Hi Bruno,
On Wed, 2021-12-22 at 16:16 -0300, Bruno Meneguele wrote:
> The measurement list is dumped during a soft reset (kexec) through the call
> to "print_hex_dump(KERN_DEBUG, ...)", which ignores the DEBUG build flag.
> Instead, use "print_hex_dump_debug(...)", honoring the build flag.
>
> Signed-off-by: Bruno Meneguele <bmeneg@xxxxxxxxxx>
The patch description needs to at least explain why using
print_hex_dump() isn't sufficent. Look at how print_hex_dump() is
defined. Based on whether CONFIG_DYNAMIC_DEBUG is enabled, different
functions are used.
Mimi
> ---
> security/integrity/ima/ima_kexec.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/security/integrity/ima/ima_kexec.c b/security/integrity/ima/ima_kexec.c
> index f799cc278a9a..13753136f03f 100644
> --- a/security/integrity/ima/ima_kexec.c
> +++ b/security/integrity/ima/ima_kexec.c
> @@ -61,9 +61,9 @@ static int ima_dump_measurement_list(unsigned long *buffer_size, void **buffer,
> }
> memcpy(file.buf, &khdr, sizeof(khdr));
>
> - print_hex_dump(KERN_DEBUG, "ima dump: ", DUMP_PREFIX_NONE,
> - 16, 1, file.buf,
> - file.count < 100 ? file.count : 100, true);
> + print_hex_dump_debug("ima dump: ", DUMP_PREFIX_NONE, 16, 1,
> + file.buf, file.count < 100 ? file.count : 100,
> + true);
>
> *buffer_size = file.count;
> *buffer = file.buf;
