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Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer, courtesy of the glibc testsuite

From Sam Ravnborg <sam@ravnborg.org>
Newsgroups linux.kernel
Subject Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer, courtesy of the glibc testsuite
Date 2016-05-29 19:40 +0200
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Hi Dave.

> Ok, mystery solved.

Super good explanation...
> 
> ====================
> >From d645a0376b0010cd60ae5651b3b84a56f5b0e5a4 Mon Sep 17 00:00:00 2001
> From: "David S. Miller" <davem@davemloft.net>
> Date: Sat, 28 May 2016 20:41:12 -0700
> Subject: [PATCH 2/2] sparc64: Fix return from trap window fill crashes.
> 
> We must handle data access exception as well as memory address unaligned
> exceptions from return from trap window fill faults, not just normal
> TLB misses.

It would be nice to include the explanation from the mail in the changelog.
It gives a good background information and it is more accessible in the
commit log rather than mails only.

	Sam

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[4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer, courtesy of the glibc testsuite Nick Alcock <nix@esperi.org.uk> - 2016-05-27 13:30 +0200
  [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer, courtesy of the glibc testsuite Nick Alcock <nix@esperi.org.uk> - 2016-05-27 15:20 +0200
    Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged  panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer,  courtesy of the glibc testsuite John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> - 2016-05-27 15:40 +0200
      Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer, courtesy of the glibc testsuite Nick Alcock <nix@esperi.org.uk> - 2016-05-27 15:50 +0200
    Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged  panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer,  courtesy of the glibc testsuite David Miller <davem@davemloft.net> - 2016-05-27 21:40 +0200
      Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer, courtesy of the glibc testsuite Nick Alcock <nix@esperi.org.uk> - 2016-05-27 23:50 +0200
        Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged  panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer,  courtesy of the glibc testsuite David Miller <davem@davemloft.net> - 2016-05-28 01:00 +0200
          Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged  panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer,  courtesy of the glibc testsuite David Miller <davem@davemloft.net> - 2016-05-29 06:30 +0200
            Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged  panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer,  courtesy of the glibc testsuite Sam Ravnborg <sam@ravnborg.org> - 2016-05-29 19:40 +0200
              Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged  panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer,  courtesy of the glibc testsuite David Miller <davem@davemloft.net> - 2016-05-30 04:20 +0200
    Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged  panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer,  courtesy of the glibc testsuite David Miller <davem@davemloft.net> - 2016-05-29 08:10 +0200
      Re: [4.1.x -- 4.6.x and probably HEAD] Reproducible unprivileged panic/TLB BUG on sparc via a stack-protected rt_sigaction() ka_restorer, courtesy of the glibc testsuite Nix <nix@esperi.org.uk> - 2016-05-30 14:50 +0200

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