| Message ID | 20220403121920.4788-1-linmq006@gmail.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere, archived |
| Headers | show |
| Series | soc: fsl: qe: Fix refcount leak in par_io_of_config | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/github-powerpc_sparse | success | Successfully ran 4 jobs. |
| snowpatch_ozlabs/github-powerpc_clang | success | Successfully ran 7 jobs. |
| snowpatch_ozlabs/github-powerpc_kernel_qemu | success | Successfully ran 24 jobs. |
diff --git a/drivers/soc/fsl/qe/qe_io.c b/drivers/soc/fsl/qe/qe_io.c index a5e2d0e5ab51..9f5f746bea88 100644 --- a/drivers/soc/fsl/qe/qe_io.c +++ b/drivers/soc/fsl/qe/qe_io.c @@ -159,12 +159,12 @@ int par_io_of_config(struct device_node *np) pio_map = of_get_property(pio, "pio-map", &pio_map_len); if (pio_map == NULL) { printk(KERN_ERR "pio-map is not set!\n"); - return -1; + goto err_node_put; } pio_map_len /= sizeof(unsigned int); if ((pio_map_len % 6) != 0) { printk(KERN_ERR "pio-map format wrong!\n"); - return -1; + goto err_node_put; } while (pio_map_len > 0) { @@ -182,5 +182,9 @@ int par_io_of_config(struct device_node *np) } of_node_put(pio); return 0; + +err_node_put: + of_node_put(pio); + return -1; } EXPORT_SYMBOL(par_io_of_config);
The device_node pointer is returned by of_parse_phandle() with refcount incremented. We should use of_node_put() on it when done. This function only calls of_node_put() in the regular path. And it will cause refcount leak in error path. Fixes: 986585385131 ("[POWERPC] Add QUICC Engine (QE) infrastructure") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> --- drivers/soc/fsl/qe/qe_io.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)