diff options
| -rw-r--r-- | arch/parisc/kernel/sys_parisc.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index f76c10863c6..a047b3227e5 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -94,11 +94,12 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, { if (len > TASK_SIZE) return -ENOMEM; - /* Might want to check for cache aliasing issues for MAP_FIXED case - * like ARM or MIPS ??? --BenH. - */ - if (flags & MAP_FIXED) + if (flags & MAP_FIXED) { + if ((flags & MAP_SHARED) && + (addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)) + return -EINVAL; return addr; + } if (!addr) addr = TASK_UNMAPPED_BASE; |