diff options
Diffstat (limited to 'arch/s390/lib/uaccess_std.c')
| -rw-r--r-- | arch/s390/lib/uaccess_std.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/lib/uaccess_std.c b/arch/s390/lib/uaccess_std.c index 6fbd06338270..79c6c7d76e08 100644 --- a/arch/s390/lib/uaccess_std.c +++ b/arch/s390/lib/uaccess_std.c @@ -188,6 +188,8 @@ size_t strnlen_user_std(size_t size, const char __user *src) register unsigned long reg0 asm("0") = 0UL; unsigned long tmp1, tmp2; + if (unlikely(!size)) + return 0; asm volatile( " la %2,0(%1)\n" " la %3,0(%0,%1)\n" |