[S390] panic_stack leak in smp_alloc_lowcore
Fix freeing of the panic_stack if the allocation of async_stack failed.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index bf170c6..1e7db1a 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -500,18 +500,15 @@
save_area = get_zeroed_page(GFP_KERNEL);
if (!save_area)
- goto out_save_area;
+ goto out;
lowcore->extended_save_area_addr = (u32) save_area;
}
#endif
lowcore_ptr[cpu] = lowcore;
return 0;
-#ifndef CONFIG_64BIT
-out_save_area:
- free_page(panic_stack);
-#endif
out:
+ free_page(panic_stack);
free_pages(async_stack, ASYNC_ORDER);
free_pages((unsigned long) lowcore, lc_order);
return -ENOMEM;