OpenJDK / jdk / jdk
changeset 54436:d5fb27646df4
8221833: Readability check in Symbol::is_valid not performed for some addresses
Reviewed-by: zgu, coleenp
| author | mdoerr |
|---|---|
| date | Fri, 05 Apr 2019 09:18:18 +0200 |
| parents | 776b261dff84 |
| children | 2ae93028bef3 |
| files | src/hotspot/share/runtime/os.cpp |
| diffstat | 1 files changed, 3 insertions(+), 2 deletions(-) [+] |
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--- a/src/hotspot/share/runtime/os.cpp Fri Apr 05 09:06:19 2019 +0200 +++ b/src/hotspot/share/runtime/os.cpp Fri Apr 05 09:18:18 2019 +0200 @@ -1024,8 +1024,9 @@ } bool os::is_readable_range(const void* from, const void* to) { - for (address p = align_down((address)from, min_page_size()); p < to; p += min_page_size()) { - if (!is_readable_pointer(p)) { + if ((uintptr_t)from >= (uintptr_t)to) return false; + for (uintptr_t p = align_down((uintptr_t)from, min_page_size()); p < (uintptr_t)to; p += min_page_size()) { + if (!is_readable_pointer((const void*)p)) { return false; } }