drm/amdkfd: use scnprintf/vscnprintf in kfd_smi_event_add

snprintf() and vsnprintf() return the number of bytes that would have
been written if the buffer were large enough, not the actual bytes
written. If truncation occurs, the accumulated length can exceed the
buffer size, causing kfifo_in() to read past the fifo_in[] stack buffer.

Switch to scnprintf() and vscnprintf() which return the actual number
of bytes written, excluding the null terminator. This prevents the
potential buffer over-read when calculating the offset for subsequent
writes.

Signed-off-by: William Palacek <William.Palacek@amd.com>
Reviewed-by: Alysa Liu <Alysa.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

0 files changed, 0 insertions, 0 deletions