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Commit 33b1d09e authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

[S390] panic_stack leak in smp_alloc_lowcore 



Fix freeing of the panic_stack if the allocation of async_stack failed.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 4f7e90d6

arch/s390/kernel/smp.c

+2 −5
Original line number Diff line number Diff line
@@ -500,18 +500,15 @@ static int __cpuinit smp_alloc_lowcore(int cpu) 


		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;