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[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>
This commit is contained in:
Martin Schwidefsky 2008-12-25 13:39:27 +01:00
parent 4f7e90d6d6
commit 33b1d09ef3
1 changed files with 2 additions and 5 deletions
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7
arch/s390/kernel/smp.c
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@ -500,18 +500,15 @@ static int __cpuinit smp_alloc_lowcore(int cpu)
save_area = get_zeroed_page(GFP_KERNEL); save_area = get_zeroed_page(GFP_KERNEL);
if (!save_area) if (!save_area)
goto out_save_area; goto out;
lowcore->extended_save_area_addr = (u32) save_area; lowcore->extended_save_area_addr = (u32) save_area;
} }
#endif #endif
lowcore_ptr[cpu] = lowcore; lowcore_ptr[cpu] = lowcore;
return 0; return 0;
#ifndef CONFIG_64BIT
out_save_area:
free_page(panic_stack);
#endif
out: out:
free_page(panic_stack);
free_pages(async_stack, ASYNC_ORDER); free_pages(async_stack, ASYNC_ORDER);
free_pages((unsigned long) lowcore, lc_order); free_pages((unsigned long) lowcore, lc_order);
return -ENOMEM; return -ENOMEM;