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Merge branch 'x86-smap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 SMAP fixes from Ingo Molnar:
 "Fixes for Intel SMAP support, to fix SIGSEGVs during bootup"

* 'x86-smap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Introduce [compat_]save_altstack_ex() to unbreak x86 SMAP
  x86, smap: Handle csum_partial_copy_*_user()
This commit is contained in:
Linus Torvalds
2013-09-04 11:08:32 -07:00
parent b20c99eb66 bd1c149aa9
commit f357a82048
6 changed files with 46 additions and 11 deletions
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2
arch/x86/ia32/ia32_signal.c
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@@ -457,7 +457,7 @@ int ia32_setup_rt_frame(int sig, struct ksignal *ksig,
else
put_user_ex(0, &frame->uc.uc_flags);
put_user_ex(0, &frame->uc.uc_link);
err |= __compat_save_altstack(&frame->uc.uc_stack, regs->sp);
compat_save_altstack_ex(&frame->uc.uc_stack, regs->sp);
if (ksig->ka.sa.sa_flags & SA_RESTORER)
restorer = ksig->ka.sa.sa_restorer;