On 29 May 2016, David Miller spake thusly: > BTW Nick, in thinking through all of this, I want to strongly encourage > you to disable stack protector for all sigreturn stubs in the GLIBC tree.
I completely concur, and have already written (but not committed) a patch to do this: I'll augment the existing sparc-only patch into a sigreturn-stubs patch. I *think* I spotted all the stubs. (Many of them are in assembler, but not all.) (If there's anything else which involves calling functions with a precisely-aligned stack and an expectation of no stack pointer movement in the prologue or epilogue, I'd be interested to know about it, since that'll need inhibit_stack_protector'ing too.) -- NULL && (void)
