Attachment 311838 Details for Bug 455435 – Upstream fix for this issue

[patch] Upstream fix for this issue

1339 (text/plain), 4.49 KB, created by Prarit Bhargava on 2008-07-15 14:19:36 UTC

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Creator: Prarit Bhargava

Created: 2008-07-15 14:19:36 UTC

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patch

obsolete

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>Date:	Wed, 14 May 2008 19:59:15 GMT
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>From:	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
>To:	git-commits-head@vger.kernel.org
>Subject: x86: user_regset_view table fix for ia32 on 64-bit
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>X-Git-Commit: 1f465f4e475454b8bb590846c50a9d16e8046f3d
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>Gitweb:     http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1f465f4e475454b8bb590846c50a9d16e8046f3d
>Commit:     1f465f4e475454b8bb590846c50a9d16e8046f3d
>Parent:     afc85343807bc2c488b7372cd7547875dfe03fe5
>Author:     Roland McGrath <roland@redhat.com>
>AuthorDate: Fri May 9 15:43:44 2008 -0700
>Committer:  Ingo Molnar <mingo@elte.hu>
>CommitDate: Tue May 13 19:40:20 2008 +0200
>
>    x86: user_regset_view table fix for ia32 on 64-bit
>    
>    The user_regset_view table for the 32-bit regsets on the 64-bit build had
>    the wrong sizes for the FP regsets.  This bug had no user-visible effect
>    (just on kernel modules using the user_regset interfaces and the like).
>    But the fix is trivial and risk-free.
>    
>    Signed-off-by: Roland McGrath <roland@redhat.com>
>    Signed-off-by: Ingo Molnar <mingo@elte.hu>
>---
> arch/x86/kernel/ptrace.c |    7 +++++--
> 1 files changed, 5 insertions(+), 2 deletions(-)
>
>diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
>index fb03ef3..a7835f2 100644
>--- a/arch/x86/kernel/ptrace.c
>+++ b/arch/x86/kernel/ptrace.c
>@@ -1303,6 +1303,9 @@ static const struct user_regset_view user_x86_64_view = {
> #define genregs32_get		genregs_get
> #define genregs32_set		genregs_set
> 
>+#define user_i387_ia32_struct	user_i387_struct
>+#define user32_fxsr_struct	user_fxsr_struct
>+
> #endif	/* CONFIG_X86_64 */
> 
> #if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
>@@ -1315,13 +1318,13 @@ static const struct user_regset x86_32_regsets[] = {
> 	},
> 	[REGSET_FP] = {
> 		.core_note_type = NT_PRFPREG,
>-		.n = sizeof(struct user_i387_struct) / sizeof(u32),
>+		.n = sizeof(struct user_i387_ia32_struct) / sizeof(u32),
> 		.size = sizeof(u32), .align = sizeof(u32),
> 		.active = fpregs_active, .get = fpregs_get, .set = fpregs_set
> 	},
> 	[REGSET_XFP] = {
> 		.core_note_type = NT_PRXFPREG,
>-		.n = sizeof(struct user_i387_struct) / sizeof(u32),
>+		.n = sizeof(struct user32_fxsr_struct) / sizeof(u32),
> 		.size = sizeof(u32), .align = sizeof(u32),
> 		.active = xfpregs_active, .get = xfpregs_get, .set = xfpregs_set
> 	},
>--
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Attachments on bug 455435: 311838