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[Bug libc/23174] [hppa] SIGSEGV on return from signal handler
- From: "joseph at codesourcery dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 14 May 2018 15:41:33 +0000
- Subject: [Bug libc/23174] [hppa] SIGSEGV on return from signal handler
- Auto-submitted: auto-generated
- References: <bug-23174-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=23174
--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
If executable stacks are needed for signal returns in current kernels, the
hppa GCC changes may need to be reverted, and the elf/check-execstack test
XFAILed on hppa with a comment explaining the issue like the one in
sysdeps/unix/sysv/linux/mips/Makefile, until the hppa kernel has been
changed to use a VDSO for signal returns and older kernel versions without
that support are no longer supported by glibc. (I think the lack of
SA_RESTORER support in the hppa kernel means it's not possible for glibc
to provide a signal return trampoline and so avoid the issue that way.)
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