Edit report at https://bugs.php.net/bug.php?id=79751&edit=1
ID: 79751
User updated by: buschmann at nidsa dot net
Reported by: buschmann at nidsa dot net
Summary: "VirtualProtect() failed" entries in apache
error.log
Status: Open
Type: Bug
Package: Apache2 related
Operating System: Windows Server 2019 64bit
PHP Version: 8.0.0alpha1
Block user comment: N
Private report: N
New Comment:
When setting opcache.jit_buffer_size=16M and a fresh start the error messages in error.log disappear
!!
But I have only used the defaults, so maybe JIT=On and opcache.jit_buffer_size=0 don't play
well together...
BUT: I have also found, that not all opcache config parameters are reported by phpinfo:
In my config file I had set
opcache.huge_code_pages=1
which is not reported as seen below.
BTW: seems OK with huge_pages=1 in a second test,
BUT in the documentation the flag should be marked as boolean, not string:
(from online manual)
opcache.huge_code_pages string
Here are the opcache data from phpinfo after fresh start, scripts reloads and some test with the
application, which seems working OK (huge pages disabled for now!):
Opcode Caching Up and Running
Optimization Enabled
SHM Cache Enabled
File Cache Disabled
JIT On
Startup OK
Shared memory model win32
Cache hits 47
Cache misses 299
Used memory 22870456
Free memory 10683976
Wasted memory 0
Interned Strings Used memory 2597400
Interned Strings Free memory 547856
Cached scripts 299
Cached keys 538
Max keys 983
OOM restarts 0
Hash keys restarts 0
Manual restarts 0
opcache.blacklist_filename no value no value
opcache.cache_id no value no value
opcache.consistency_checks 0 0
opcache.dups_fix Off Off
opcache.enable On On
opcache.enable_cli Off Off
opcache.enable_file_override Off Off
opcache.error_log no value no value
opcache.file_cache no value no value
opcache.file_cache_consistency_checks On On
opcache.file_cache_fallback On On
opcache.file_cache_only Off Off
opcache.file_update_protection 2 2
opcache.force_restart_timeout 180 180
opcache.interned_strings_buffer 4 4
opcache.jit 1205 1205
opcache.jit_bisect_limit 0 0
opcache.jit_blacklist_root_trace 16 16
opcache.jit_blacklist_side_trace 8 8
opcache.jit_buffer_size 16M 16M
opcache.jit_debug 0 0
opcache.jit_hot_func 127 127
opcache.jit_hot_loop 64 64
opcache.jit_hot_return 8 8
opcache.jit_hot_side_exit 8 8
opcache.jit_max_loops_unroll 8 8
opcache.jit_max_polymorphic_calls 2 2
opcache.jit_max_recursive_calls 2 2
opcache.jit_max_recursive_returns 2 2
opcache.jit_max_root_traces 1024 1024
opcache.jit_max_side_traces 128 128
opcache.jit_prof_threshold 0.005 0.005
opcache.log_verbosity_level 1 1
opcache.max_accelerated_files 980 980
opcache.max_file_size 0 0
opcache.max_wasted_percentage 5 5
opcache.memory_consumption 32 32
opcache.mmap_base no value no value
opcache.opt_debug_level 0 0
opcache.optimization_level 0x7FFEBFFF 0x7FFEBFFF
opcache.preferred_memory_model no value no value
opcache.preload no value no value
opcache.protect_memory Off Off
opcache.record_warnings Off Off
opcache.restrict_api no value no value
opcache.revalidate_freq 60 60
opcache.revalidate_path Off Off
opcache.save_comments Off Off
opcache.use_cwd On On
opcache.validate_permission Off Off
opcache.validate_timestamps On On
Previous Comments:
------------------------------------------------------------------------
[2020-06-30 11:30:44] cmb@php.net
> JIT On> opcache.jit_buffer_size 0 0
That looks pretty strange to me. Would you still get the
"VirtualProtect() failed" errors, if you set
opcache.jit_buffer_size=16M?
------------------------------------------------------------------------
[2020-06-30 09:18:28] buschmann at nidsa dot net
I have not changed any configuration for opcache/jit from the proven values of version 7.x.x (for
opcache mostly the buffer/string sizes).
JIT seems to be ON by default as is the case here.
Here are the complete config settings from Zend OPcache from phpinfo:
Opcode Caching Up and Running
Optimization Enabled
SHM Cache Enabled
File Cache Disabled
JIT On
Startup OK
Shared memory model win32
Cache hits 0
Cache misses 1
Used memory 4242384
Free memory 29312048
Wasted memory 0
Interned Strings Used memory 199520
Interned Strings Free memory 2945736
Cached scripts 1
Cached keys 2
Max keys 983
OOM restarts 0
Hash keys restarts 0
Manual restarts 0
opcache.blacklist_filename no value no value
opcache.cache_id no value no value
opcache.consistency_checks 0 0
opcache.dups_fix Off Off
opcache.enable On On
opcache.enable_cli Off Off
opcache.enable_file_override Off Off
opcache.error_log no value no value
opcache.file_cache no value no value
opcache.file_cache_consistency_checks On On
opcache.file_cache_fallback On On
opcache.file_cache_only Off Off
opcache.file_update_protection 2 2
opcache.force_restart_timeout 180 180
opcache.interned_strings_buffer 4 4
opcache.jit 1205 1205
opcache.jit_bisect_limit 0 0
opcache.jit_blacklist_root_trace 16 16
opcache.jit_blacklist_side_trace 8 8
opcache.jit_buffer_size 0 0
opcache.jit_debug 0 0
opcache.jit_hot_func 127 127
opcache.jit_hot_loop 64 64
opcache.jit_hot_return 8 8
opcache.jit_hot_side_exit 8 8
opcache.jit_max_loops_unroll 8 8
opcache.jit_max_polymorphic_calls 2 2
opcache.jit_max_recursive_calls 2 2
opcache.jit_max_recursive_returns 2 2
opcache.jit_max_root_traces 1024 1024
opcache.jit_max_side_traces 128 128
opcache.jit_prof_threshold 0.005 0.005
opcache.log_verbosity_level 1 1
opcache.max_accelerated_files 980 980
opcache.max_file_size 0 0
opcache.max_wasted_percentage 5 5
opcache.memory_consumption 32 32
opcache.mmap_base no value no value
opcache.opt_debug_level 0 0
opcache.optimization_level 0x7FFEBFFF 0x7FFEBFFF
opcache.preferred_memory_model no value no value
opcache.preload no value no value
opcache.protect_memory Off Off
opcache.record_warnings Off Off
opcache.restrict_api no value no value
opcache.revalidate_freq 60 60
opcache.revalidate_path Off Off
opcache.save_comments Off Off
opcache.use_cwd On On
opcache.validate_permission Off Off
opcache.validate_timestamps On On
------------------------------------------------------------------------
[2020-06-30 07:25:57] cmb@php.net
I think these log entries are from OPcache JIT. Do you have JIT
enabled (see PHP info)?
------------------------------------------------------------------------
[2020-06-29 15:42:19] buschmann at nidsa dot net
when I set opcache.protect_memory=0 (verified in php_info
opcache.protect_memory Off Off)
the problem stays the same.
I don't know the internals, but the sripts in the web application are working in both
situations.
------------------------------------------------------------------------
[2020-06-29 08:49:49] nikic@php.net
Does the problem go away if you set opcache.protect_memory=0? This is an debugging setting, that
should not be enabled for production opcache use.
Of course, it still shouldn't cause failures...
------------------------------------------------------------------------
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