From 7a26b53070f0099dfcfc9d499458de861c5c4859 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Wed, 15 May 2013 16:49:35 +0000 Subject: [PATCH] ACPI / scan: Fix memory leak on acpi_scan_init_hotplug() error path Following commit 6b772e8f9 (ACPI: Update PNPID match handling for notify), the acpi_scan_init_hotplug() calls acpi_set_pnp_ids() which allocates acpi_hardware_id and copies a few strings (kstrdup). If the devices does not have hardware_id set, the function exits without freeing the previously allocated ids (and kmemleak complains). This patch calls simply changes 'return' on error to a 'goto out' which calls acpi_free_pnp_ids(). Reported-by: Larry Finger Signed-off-by: Catalin Marinas Reviewed-by: Toshi Kani Tested-by: Toshi Kani Signed-off-by: Rafael J. Wysocki --- drivers/acpi/scan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index fe158fd..c1bc608 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1785,7 +1785,7 @@ static void acpi_scan_init_hotplug(acpi_handle handle, int type) acpi_set_pnp_ids(handle, &pnp, type); if (!pnp.type.hardware_id) - return; + goto out; /* * This relies on the fact that acpi_install_notify_handler() will not @@ -1800,6 +1800,7 @@ static void acpi_scan_init_hotplug(acpi_handle handle, int type) } } +out: acpi_free_pnp_ids(&pnp); } -- 2.7.4