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use pcre.jit only if enabled#6647

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remicollet wants to merge 1 commit intophp:PHP-7.4from
remicollet:issue-opcache-jit
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use pcre.jit only if enabled#6647
remicollet wants to merge 1 commit intophp:PHP-7.4from
remicollet:issue-opcache-jit

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@remicollet remicollet commented Jan 28, 2021

We have a buildtime option HAVE_PCRE_JIT_SUPPORT and a runtime option for pcre2 jit usage PCRE_G(jit)

This fix check for both in opcache.

Bug: when selinux, jit doesn't work, but even with pcre.jit=0, when opcache is enabled, a AVC is raised

type=AVC msg=audit(1611840254.138:10844): avc: denied { execmem } for pid=328163 comm="php-fpm" scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:system_r:httpd_t:s0 tclass=process permissive=1

@remicollet remicollet changed the base branch from master to PHP-7.4 January 28, 2021 13:39
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remicollet commented Jan 28, 2021

@cmb69 as you are the pcre2 change owner ;)
@nikic as this is a trivial fix

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nikic approved these changes Jan 28, 2021
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Looks reasonable.

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nikic commented Jan 28, 2021

@cmb69 Unrelated to the PR, looks like Windows build is borked?

libzip_a.lib(zip_algorithm_xz.obj) : error LNK2001: unresolved external symbol lzma_code
libzip_a.lib(zip_algorithm_xz.obj) : error LNK2001: unresolved external symbol lzma_end
libzip_a.lib(zip_algorithm_xz.obj) : error LNK2001: unresolved external symbol lzma_lzma_preset
libzip_a.lib(zip_algorithm_xz.obj) : error LNK2001: unresolved external symbol lzma_stream_encoder
libzip_a.lib(zip_algorithm_xz.obj) : error LNK2001: unresolved external symbol lzma_alone_encoder
libzip_a.lib(zip_algorithm_xz.obj) : error LNK2001: unresolved external symbol lzma_stream_decoder
libzip_a.lib(zip_algorithm_xz.obj) : error LNK2001: unresolved external symbol lzma_alone_decoder
C:\obj\Release\php7.dll : fatal error LNK1120: 7 unresolved externals

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remicollet commented Jan 28, 2021

Fixed in 7.4+ by 067f7e4 and aeb4f21

@remicollet remicollet closed this Jan 28, 2021
@remicollet remicollet deleted the issue-opcache-jit branch January 28, 2021 15:28
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cmb69 commented Jan 28, 2021

Unrelated to the PR, looks like Windows build is borked?

It's because Remi had changed the branch in GH UI, but likely hadn't rebased. AppVeyor gets confused by that.

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kwizart commented Jan 28, 2021

Tested, this fixes the reported issue with execmem with SELinux enforced

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