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[S390] init task memory faults.

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Lock for mmap_sem is missing on page fault retry for init task
when it fails due to out of memory.

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Akinobu Mita 2006-09-28 16:55:18 +02:00 committed by Martin Schwidefsky
parent a77c64c1a6
commit bac9c66cd2
1 changed files with 1 additions and 0 deletions
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1
arch/s390/mm/fault.c
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@ -355,6 +355,7 @@ do_exception(struct pt_regs *regs, unsigned long error_code, int is_protection)
up_read(&mm->mmap_sem);
if (tsk->pid == 1) {
yield();
down_read(&mm->mmap_sem);
goto survive;
}
printk("VM: killing process %s\n", tsk->comm);