diff options
| author | Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> | 2018-11-07 15:12:49 +0300 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2018-11-12 10:38:27 -0800 |
| commit | 121e38e5acdc8e1e4cdb750fcdcc72f94e420968 (patch) | |
| tree | 7f3c6d5a0dc41b23920c59e590968a430d4f6148 | |
| parent | 4592f11e47a2b28562d6cfe165d5ea7495ff4dca (diff) | |
ARC: mm: fix uninitialised signal code in do_page_fault
Commit 15773ae938d8 ("signal/arc: Use force_sig_fault where
appropriate") introduced undefined behaviour by leaving si_code
unitiailized and leaking random kernel values to user space.
Fixes: 15773ae938d8 ("signal/arc: Use force_sig_fault where appropriate")
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| -rw-r--r-- | arch/arc/mm/fault.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c index c9da6102eb4f..e2d9fc3fea01 100644 --- a/arch/arc/mm/fault.c +++ b/arch/arc/mm/fault.c @@ -66,7 +66,7 @@ void do_page_fault(unsigned long address, struct pt_regs *regs) struct vm_area_struct *vma = NULL; struct task_struct *tsk = current; struct mm_struct *mm = tsk->mm; - int si_code; + int si_code = 0; int ret; vm_fault_t fault; int write = regs->ecr_cause & ECR_C_PROTV_STORE; /* ST/EX */ |