Commit-ID: 72c6fb4f74b6b3797f5b1abd6944d7a1d2adbf04 Gitweb: http://git.kernel.org/tip/72c6fb4f74b6b3797f5b1abd6944d7a1d2adbf04 Author: Andy Lutomirski <l...@amacapital.net> AuthorDate: Tue, 24 Feb 2015 16:01:39 -0800 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 25 Feb 2015 08:27:50 +0100
x86/ia32-compat: Fix CLONE_SETTLS bitness of copy_thread() CLONE_SETTLS is expected to write a TLS entry in the GDT for 32-bit callers and to set FSBASE for 64-bit callers. The correct check is is_ia32_task(), which returns true in the context of a 32-bit syscall. TIF_IA32 is set if the task itself has a 32-bit personality, which is not the same thing. Signed-off-by: Andy Lutomirski <l...@amacapital.net> Cc: Borislav Petkov <b...@alien8.de> Cc: Denys Vlasenko <dvlas...@redhat.com> Link: http://lkml.kernel.org/r/45e2d0d695393d76406a0c7225b82c76223e0cc5.1424822291.git.l...@amacapital.net Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/kernel/process_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 5a2c029..936d434 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -207,7 +207,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, */ if (clone_flags & CLONE_SETTLS) { #ifdef CONFIG_IA32_EMULATION - if (test_thread_flag(TIF_IA32)) + if (is_ia32_task()) err = do_set_thread_area(p, -1, (struct user_desc __user *)childregs->si, 0); else -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
