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-rw-r--r--arch/s390/kernel/setup.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 29268859d8ee..0f419c5765c8 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -377,11 +377,14 @@ static void __init setup_lowcore(void)
PSW_MASK_DAT | PSW_MASK_MCHECK;
lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler;
lc->clock_comparator = -1ULL;
- lc->kernel_stack = ((unsigned long) &init_thread_union) + THREAD_SIZE;
+ lc->kernel_stack = ((unsigned long) &init_thread_union)
+ + THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
lc->async_stack = (unsigned long)
- __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0) + ASYNC_SIZE;
+ __alloc_bootmem(ASYNC_SIZE, ASYNC_SIZE, 0)
+ + ASYNC_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
lc->panic_stack = (unsigned long)
- __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0) + PAGE_SIZE;
+ __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0)
+ + PAGE_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
lc->current_task = (unsigned long) init_thread_union.thread_info.task;
lc->thread_info = (unsigned long) &init_thread_union;
lc->machine_flags = S390_lowcore.machine_flags;