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x86, compat: Use test_thread_flag(TIF_IA32) in compat signal delivery

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Signal delivery compat path may not have the 'TS_COMPAT' flag (that
flag indicates how we entered the kernel).  So use
test_thread_flag(TIF_IA32) instead of is_ia32_task(): one of the
functions of TIF_IA32 is just what kind of signal frame we want.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/1339722435.3475.57.camel@sbsiddha-desk.sc.intel.com
Cc: stable@kernel.org	# v3.4
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Suresh Siddha
2012-06-14 18:07:15 -07:00
committed by H. Peter Anvin
parent 161270fc1f
commit 0b91f45b23
1 changed files with 1 additions and 1 deletions
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2
arch/x86/ia32/ia32_signal.c
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@@ -38,7 +38,7 @@
int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from) int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
{ {
int err = 0; int err = 0;
bool ia32 = is_ia32_task(); bool ia32 = test_thread_flag(TIF_IA32);
if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t))) if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
return -EFAULT; return -EFAULT;