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signal/mips: Report FPE_FLTUNK for undiagnosed floating point exceptions

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Most mips builds fail with

arch/mips/kernel/traps.c: In function ‘force_fcr31_sig’:
arch/mips/kernel/traps.c:732:2: error:
	‘si_code’ may be used uninitialized in this function

Fix the problem by initializing si_code with FPE_FLTUNK (undiagnosed
floating point exception).

Fixes: f43a54a0d9 ("signal/mips: Use force_sig_fault where appropriate")
Cc: linux-mips@linux-mips.org
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Guenter Roeck 2018-05-15 06:50:47 -07:00 committed by Eric W. Biederman
parent 530621b79f
commit 0bb0a1149e
1 changed files with 1 additions and 1 deletions
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arch/mips/kernel/traps.c
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@ -716,7 +716,7 @@ asmlinkage void do_ov(struct pt_regs *regs)
void force_fcr31_sig(unsigned long fcr31, void __user *fault_addr, void force_fcr31_sig(unsigned long fcr31, void __user *fault_addr,
struct task_struct *tsk) struct task_struct *tsk)
{ {
int si_code; int si_code = FPE_FLTUNK;
if (fcr31 & FPU_CSR_INV_X) if (fcr31 & FPU_CSR_INV_X)
si_code = FPE_FLTINV; si_code = FPE_FLTINV;