diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-03-17 11:32:28 +0100 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-02-15 10:32:32 -0600 |
| commit | 56c75aaf313a884eb2cbe51958dc3b24198a57a2 (patch) | |
| tree | 4b1d7ef7a96da4d2d95bad76cad188f4a530845b /arch/s390 | |
| parent | 95d59d56816ad3e5df37ea57826ba83ffa5f0c06 (diff) | |
mm: Fixup all fault handlers to check current->pagefault_disable
Necessary for decoupling pagefault disable from preempt count.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/mm/fault.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index a9a301866b3c..c57268b14b8f 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -295,7 +295,8 @@ static inline int do_exception(struct pt_regs *regs, int access, * user context. */ fault = VM_FAULT_BADCONTEXT; - if (unlikely(!user_space_fault(trans_exc_code) || in_atomic() || !mm)) + if (unlikely(!user_space_fault(trans_exc_code) || in_atomic() || !mm || + tsk->pagefault_disabled)) goto out; address = trans_exc_code & __FAIL_ADDR_MASK; @@ -426,7 +427,8 @@ void __kprobes do_asce_exception(struct pt_regs *regs, long pgm_int_code, struct mm_struct *mm = current->mm; struct vm_area_struct *vma; - if (unlikely(!user_space_fault(trans_exc_code) || in_atomic() || !mm)) + if (unlikely(!user_space_fault(trans_exc_code) || in_atomic() || !mm || + current->pagefault_disabled)) goto no_context; down_read(&mm->mmap_sem); |