diff options
| author | Dan Carpenter <error27@gmail.com> | 2023-01-19 17:58:54 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-01-20 14:51:47 +0300 |
| commit | ea57680af47587397f5005d7758022441ed66d54 (patch) | |
| tree | f113316585fbf13816f9fad3f5619383f588a45c /sound/soc/sof/ipc4-mtrace.c | |
| parent | c1619ea22d9509cfbcf5c2c1cc65563179e9dc8e (diff) | |
| download | linux-ea57680af47587397f5005d7758022441ed66d54.tar.xz | |
ASoC: SOF: ipc4-mtrace: prevent underflow in sof_ipc4_priority_mask_dfs_write()
The "id" comes from the user. Change the type to unsigned to prevent
an array underflow.
Fixes: f4ea22f7aa75 ("ASoC: SOF: ipc4: Add support for mtrace log extraction")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/Y8laruWOEwOC/dx9@kili
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/ipc4-mtrace.c')
| -rw-r--r-- | sound/soc/sof/ipc4-mtrace.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sound/soc/sof/ipc4-mtrace.c b/sound/soc/sof/ipc4-mtrace.c index 70dea8ae706e..0ec6ef681012 100644 --- a/sound/soc/sof/ipc4-mtrace.c +++ b/sound/soc/sof/ipc4-mtrace.c @@ -344,9 +344,10 @@ static ssize_t sof_ipc4_priority_mask_dfs_write(struct file *file, size_t count, loff_t *ppos) { struct sof_mtrace_priv *priv = file->private_data; - int id, ret; + unsigned int id; char *buf; u32 mask; + int ret; /* * To update Nth mask entry, write: @@ -357,9 +358,9 @@ static ssize_t sof_ipc4_priority_mask_dfs_write(struct file *file, if (IS_ERR(buf)) return PTR_ERR(buf); - ret = sscanf(buf, "%d,0x%x", &id, &mask); + ret = sscanf(buf, "%u,0x%x", &id, &mask); if (ret != 2) { - ret = sscanf(buf, "%d,%x", &id, &mask); + ret = sscanf(buf, "%u,%x", &id, &mask); if (ret != 2) { ret = -EINVAL; goto out; |