From: Hui Wang hui.wang@canonical.com
[ Upstream commit 9037c3bde65d339017ef41d81cb58069ffc321d4 ]
The function simple_write_to_buffer() doesn't add string termination at the end of buf, we need to handle it on our own. This change refers to the function tokenize_input() in debug.c and the function sof_dfsentry_trace_filter_write() in trace.c.
Fixes: 091c12e1f50c ("ASoC: SOF: debug: add new debugfs entries for IPC flood test") Reviewed-by: Kai Vehmanen kai.vehmanen@linux.intel.com Signed-off-by: Hui Wang hui.wang@canonical.com Link: https://lore.kernel.org/r/20210208103857.75705-1-hui.wang@canonical.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/sof/debug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/sof/debug.c b/sound/soc/sof/debug.c index 5529e8eeca462..08726034ff090 100644 --- a/sound/soc/sof/debug.c +++ b/sound/soc/sof/debug.c @@ -135,7 +135,7 @@ static ssize_t sof_dfsentry_write(struct file *file, const char __user *buffer, char *string; int ret;
- string = kzalloc(count, GFP_KERNEL); + string = kzalloc(count+1, GFP_KERNEL); if (!string) return -ENOMEM;