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Re: [PATCH 02/14 v6] Initialize the stack guard earlier when linking statically.

From: Florian Weimer <fweimer at redhat dot com>
To: Nix <nix at esperi dot org dot uk>
Cc: libc-alpha at sourceware dot org, Nick Alcock <nick dot alcock at oracle dot com>
Date: Fri, 24 Jun 2016 16:18:42 +0200
Subject: Re: [PATCH 02/14 v6] Initialize the stack guard earlier when linking statically.
Authentication-results: sourceware.org; auth=none
References: <1465297576-10981-1-git-send-email-nix at esperi dot org dot uk> <1465297576-10981-3-git-send-email-nix at esperi dot org dot uk>

On 06/07/2016 01:06 PM, Nix wrote:

+  /* Perform IREL{,A} relocations.  */
+  apply_irel ();
+
+  /* The stack guard goes into the TCB.  */
+  __pthread_initialize_tcb_internal ();

I think this order of initialization is wrong. IFUNC resolvers need theTCB.

What's the alternative here? De-protect everything that is called from__pthread_initialize_tcb_internal?


Thanks,
Florian

References:
- --enable-stack-protector for glibc, v7
  - From: Nix
- [PATCH 02/14 v6] Initialize the stack guard earlier when linking statically.
  - From: Nix

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