zephyr: syscall: sof_dma: initialize all fields of dma_config

kv2019i · lgirdwood · commit 88732a1e4ea2 · 2026-06-12T14:24:53.000+01:00
z_vrfy_sof_dma_config() only passes allowed fields of dma_config
struct to kernel. Add initialization of the stack dma_config object
kern_cfg to ensure the skipped fields are set to a known state.

Signed-off-by: Kai Vehmanen &lt;kai.vehmanen@linux.intel.com&gt;
diff --git a/zephyr/syscall/sof_dma.c b/zephyr/syscall/sof_dma.c
@@ -190,7 +190,8 @@ static inline int z_vrfy_sof_dma_config(struct sof_dma *dma, uint32_t channel,
 					struct dma_config *config)
 {
 	struct dma_block_config *blk_cfgs;
-	struct dma_config kern_cfg, user_cfg;
+	struct dma_config kern_cfg = { 0 };
+	struct dma_config user_cfg;
 	int ret;
 
 	K_OOPS(!sof_dma_is_valid(dma));

Original file line number	Diff line number	Diff line change
`@@ -190,7 +190,8 @@ static inline int z_vrfy_sof_dma_config(struct sof_dma *dma, uint32_t channel,`
`190`	`190`	`struct dma_config *config)`
`191`	`191`	`{`
`192`	`192`	`struct dma_block_config *blk_cfgs;`
`193`		`- struct dma_config kern_cfg, user_cfg;`
	`193`	`+ struct dma_config kern_cfg = { 0 };`
	`194`	`+ struct dma_config user_cfg;`
`194`	`195`	`int ret;`
`195`	`196`
`196`	`197`	`K_OOPS(!sof_dma_is_valid(dma));`