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Re: [PATCH] mprotect segments with extra PROT_WRITE bit when DT_TEXTREL bit is set
On 2018-08-29, Florian Weimer wrote:
On 08/23/2018 07:52 AM, Fangrui Song wrote:
* elf/dl-reloc.c (_dl_relocate_object): __mprotect with extra
This needs a bug in Bugzilla (is it bug 20480?), reference in the
ChangeLog entry, and, ideally, a regression test.
I can see that the current code has a problem, but I assume we do
things this way because we want to create an RWX mapping, even
temporarily. System security policy may prevent the creation of such
mappings. We would have have to flip between RW and RWX protection
flags around IFUNC handlers to fix that.
Thank you for referring to 20480! I have replied there.