| Message ID | 1551430616-42014-11-git-send-email-wen.yang99@zte.com.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [01/15] ARM: actions: fix a leaked reference by addingmissing of_node_put | expand |
On Fri, Mar 1, 2019 at 9:57 AM Wen Yang <wen.yang99@zte.com.cn> wrote: > The call to of_get_next_child returns a node pointer with refcount > incremented thus it must be explicitly decremented after the last > usage. > > Detected by coccinelle with the following warnings: > ./arch/arm/mach-versatile/versatile_dt.c:315:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 302, but without a corresponding object release within this function. > ./arch/arm/mach-versatile/versatile_dt.c:320:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 302, but without a corresponding object release within this function. > > Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> > Cc: Linus Walleij <linus.walleij@linaro.org> > Cc: Russell King <linux@armlinux.org.uk> > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org Patch applied. Will send upstream next kernel cycle or so. Yours, Linus Walleij
diff --git a/arch/arm/mach-versatile/versatile_dt.c b/arch/arm/mach-versatile/versatile_dt.c index e9d6068..028463a 100644 --- a/arch/arm/mach-versatile/versatile_dt.c +++ b/arch/arm/mach-versatile/versatile_dt.c @@ -312,12 +312,12 @@ static void __init versatile_dt_pci_init(void) * driver had it so we will keep it. */ writel(1, versatile_sys_base + VERSATILE_SYS_PCICTL_OFFSET); - return; + goto out_put_node; } newprop = kzalloc(sizeof(*newprop), GFP_KERNEL); if (!newprop) - return; + goto out_put_node; newprop->name = kstrdup("status", GFP_KERNEL); newprop->value = kstrdup("disabled", GFP_KERNEL); @@ -325,6 +325,9 @@ static void __init versatile_dt_pci_init(void) of_update_property(np, newprop); pr_info("Not plugged into PCI backplane!\n"); + +out_put_node: + of_node_put(np); } static void __init versatile_dt_init(void)
The call to of_get_next_child returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./arch/arm/mach-versatile/versatile_dt.c:315:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 302, but without a corresponding object release within this function. ./arch/arm/mach-versatile/versatile_dt.c:320:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 302, but without a corresponding object release within this function. Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Russell King <linux@armlinux.org.uk> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- arch/arm/mach-versatile/versatile_dt.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)