Avoid missing possible candidates due to the large address range of the free segment.
Eg,
48000000-49400000 r-xs 08000000 00:0f 39322841 segment1
7ffff2ec8000-7ffff2f49000 rw-p 00000000 00:00 0 segment2
7ffff6fae000-7ffff735c000 r-xp 00200000 08:02 11538515 /usr/local/sbin/php-fpm
original code will miss the opportunity between [7ffff2ec** - 7ffff2ec8000].
Fix issue #11265.
Signed-off-by: Long, Tao <tao.long@intel.com>
Signed-off-by: Dmitry Stogov <dmitrystogov@gmail.com>
Moving the minimum base of the shared opcache memory to the second huge page to avoid a possible 0x0 base, which may cause all sorts of segfaults.
This is not a problem on most systems which have a mmap_min_addr which is non-zero, but e.g. WSL1 doesn't have a minimum mapping address.
This flag is supposed to go on the flags parameter, rather than prot. Moreover,
this flag is no longer needed because the JIT does not set RWX without ZTS, and
JIT+ZTS has been disabled on macOS with Apple Silicon.
Closes GH-13638
It seems SELinux has a bug where memory directly adjacent to the heap is
interpreted as heap memory. Dodge this issue by leaving some space between the
heap and memory suggested by find_prefered_mmap_base.
See GH-12932
See https://bugzilla.kernel.org/show_bug.cgi?id=218258
Closes GH-12942
The memory region found by find_prefered_mmap_base may clash with memory regions
reserved by asan for tracking memory. The symptom of this is that mprotect for
JIT fails adding the PROT_EXEC flag to the shared memory region.
Closes GH-12890
Avoid missing possible candidates due to the large address range of the free segment.
Eg,
48000000-49400000 r-xs 08000000 00:0f 39322841 segment1
7ffff2ec8000-7ffff2f49000 rw-p 00000000 00:00 0 segment2
7ffff6fae000-7ffff735c000 r-xp 00200000 08:02 11538515 /usr/local/sbin/php-fpm
original code will miss the opportunity between [7ffff2ec** - 7ffff2ec8000].
Fix issue #11265.
Signed-off-by: Long, Tao <tao.long@intel.com>
Signed-off-by: Dmitry Stogov <dmitrystogov@gmail.com>
This moves them from ``.data`` to ``.rodata`` and allows more compiler optimizations.
* ext/opcache/zend_accelerator_hash: make prime_numbers const
* Zend/zend_signal: make zend_sigs const
* ext/dba: make dba_handler pointers const
* ext/exif: make php_tiff_bytes_per_format and other globals const
* ext/intl/grapheme: make grapheme_extract_iters const
* ext/mstring: make rare_codepoint_bitvec const
* ext/snmp: make objid_mib const
* ext/opcache: make all zend_shared_memory_handlers const
1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |
When PaX mprotect active, opcache JIT test fail as it needs
the PROT_MPROTECT macro to be able to allow further permission
promotion with mprotect.
Closes GH-5929.
