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Message-Id: <71c5d6985d70ec8197c8d72f003823c81b7dcf99.1446270067.git.luto@kernel.org> Date: Fri, 30 Oct 2015 22:42:46 -0700 From: Andy Lutomirski <luto@...nel.org> To: x86@...nel.org, linux-kernel@...r.kernel.org Cc: Brian Gerst <brgerst@...il.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Borislav Petkov <bp@...en8.de>, Stas Sergeev <stsp@...t.ru>, Andy Lutomirski <luto@...nel.org> Subject: [PATCH urgent 2/2] x86/vm86: Set thread.vm86 to NULL on fork/clone thread.vm86 points to per-task information -- the pointer should not be copied on clone. Fixes: d4ce0f26c790 ("x86/vm86: Move fields from 'struct kernel_vm86_struct' to 'struct vm86'") Signed-off-by: Andy Lutomirski <luto@...nel.org> --- arch/x86/kernel/process.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 2199d9b774c8..b9ac5434e176 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -83,6 +83,9 @@ EXPORT_SYMBOL_GPL(idle_notifier_unregister); int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) { memcpy(dst, src, arch_task_struct_size); +#ifdef CONFIG_VM86 + dst->thread.vm86 = NULL; +#endif return fpu__copy(&dst->thread.fpu, &src->thread.fpu); } -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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