diff options
| -rw-r--r-- | linux-user/mmap.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 49cfa87..44b53bd 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -900,28 +900,17 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, abi_long target_madvise(abi_ulong start, abi_ulong len_in, int advice) { - abi_ulong len, end; + abi_ulong len; int ret = 0; if (start & ~TARGET_PAGE_MASK) { return -TARGET_EINVAL; } - len = TARGET_PAGE_ALIGN(len_in); - - if (len_in && !len) { - return -TARGET_EINVAL; - } - - end = start + len; - if (end < start) { - return -TARGET_EINVAL; - } - - if (end == start) { + if (len_in == 0) { return 0; } - - if (!guest_range_valid_untagged(start, len)) { + len = TARGET_PAGE_ALIGN(len_in); + if (len == 0 || !guest_range_valid_untagged(start, len)) { return -TARGET_EINVAL; } |