| Message ID | 20250412165700.2298733-1-chenyuan0y@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drivers: soc: sunxi: Fix possible null pointer dereference | expand |
diff --git a/drivers/soc/sunxi/sunxi_sram.c b/drivers/soc/sunxi/sunxi_sram.c index 2781a091a6a6..1853dcc806ea 100644 --- a/drivers/soc/sunxi/sunxi_sram.c +++ b/drivers/soc/sunxi/sunxi_sram.c @@ -122,6 +122,8 @@ static int sunxi_sram_show(struct seq_file *s, void *data) continue; sram_addr_p = of_get_address(sram_node, 0, NULL, NULL); + if (!sram_addr_p) + continue; seq_printf(s, "sram@%08x\n", be32_to_cpu(*sram_addr_p)); @@ -134,6 +136,8 @@ static int sunxi_sram_show(struct seq_file *s, void *data) section_addr_p = of_get_address(section_node, 0, NULL, NULL); + if (!section_addr_p) + continue; seq_printf(s, "\tsection@%04x\t(%s)\n", be32_to_cpu(*section_addr_p),
of_get_address() may return NULL which is later dereferenced. Fix this bug by adding NULL check This is similar to the commit c534b63bede6 ("drm: vc4: Fix possible null pointer dereference"). Signed-off-by: Chenyuan Yang <chenyuan0y@gmail.com> Fixes: 4af34b572a85 ("drivers: soc: sunxi: Introduce SoC driver to map SRAMs") --- drivers/soc/sunxi/sunxi_sram.c | 4 ++++ 1 file changed, 4 insertions(+)