Re: [tip:x86/vdso] x86/vdso32/syscall.S: Do not load __USER32_DS to %ss

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Subject: Re: [tip:x86/vdso] x86/vdso32/syscall.S: Do not load __USER32_DS to %ss
From: Denys Vlasenko <dvlasenk@xxxxxxxxxx>
Date: Thu, 23 Apr 2015 14:35:31 +0200
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Will Drewry <wad@xxxxxxxxxxxx>, Frédéric Weisbecker <fweisbec@xxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, linux-tip-commits@xxxxxxxxxxxxxxx
In-reply-to: <CAMzpN2i+UiPbJrS-N-KJgh4uXL6gw-Dq+O8Wn5qvVU8PgYzyiQ@mail.gmail.com>
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On 04/23/2015 02:01 PM, Brian Gerst wrote:
> The patch does appear to fix the crash.

Thanks for testing it.

I changed the patch a bit and sent it to Ingo.
Can you test that one and confirm that it also works?

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References:
- [tip:x86/vdso] x86/vdso32/syscall.S: Do not load __USER32_DS to %ss
  - From: tip-bot for Denys Vlasenko
- Re: [tip:x86/vdso] x86/vdso32/syscall.S: Do not load __USER32_DS to %ss
  - From: Brian Gerst
- Re: [tip:x86/vdso] x86/vdso32/syscall.S: Do not load __USER32_DS to %ss
  - From: Denys Vlasenko
- Re: [tip:x86/vdso] x86/vdso32/syscall.S: Do not load __USER32_DS to %ss
  - From: Brian Gerst
- Re: [tip:x86/vdso] x86/vdso32/syscall.S: Do not load __USER32_DS to %ss
  - From: Denys Vlasenko
- Re: [tip:x86/vdso] x86/vdso32/syscall.S: Do not load __USER32_DS to %ss
  - From: Brian Gerst

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