From a5167c5b3a842b865b0ca87202b95cc8a84c9e7e Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 3 Jun 2010 11:45:45 +0800 Subject: [PATCH] wmi: fix memory leak in parse_wdg This patch properly kfree out.pointer and gblock in error path. Signed-off-by: Axel Lin Signed-off-by: Matthew Garrett --- drivers/platform/x86/wmi.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index e4eaa14..582b5cd 100644 --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -827,8 +827,10 @@ static __init acpi_status parse_wdg(acpi_handle handle) total = obj->buffer.length / sizeof(struct guid_block); gblock = kmemdup(obj->buffer.pointer, obj->buffer.length, GFP_KERNEL); - if (!gblock) - return AE_NO_MEMORY; + if (!gblock) { + status = AE_NO_MEMORY; + goto out_free_pointer; + } for (i = 0; i < total; i++) { /* @@ -848,8 +850,10 @@ static __init acpi_status parse_wdg(acpi_handle handle) wmi_dump_wdg(&gblock[i]); wblock = kzalloc(sizeof(struct wmi_block), GFP_KERNEL); - if (!wblock) - return AE_NO_MEMORY; + if (!wblock) { + status = AE_NO_MEMORY; + goto out_free_gblock; + } wblock->gblock = gblock[i]; wblock->handle = handle; @@ -860,8 +864,10 @@ static __init acpi_status parse_wdg(acpi_handle handle) list_add_tail(&wblock->list, &wmi_blocks.list); } - kfree(out.pointer); +out_free_gblock: kfree(gblock); +out_free_pointer: + kfree(out.pointer); return status; } -- 2.7.4