[PATCH 3.14 023/122] x86, x32, audit: Fix x32s AUDIT_ARCH wrt audit

From: Greg Kroah-Hartman
Date: Wed Nov 19 2014 - 17:07:13 EST

3.14-stable review patch. If anyone has any objections, please let me know.


From: Andy Lutomirski <luto@xxxxxxxxxxxxxx>

commit 81f49a8fd7088cfcb588d182eeede862c0e3303e upstream.

is_compat_task() is the wrong check for audit arch; the check should
be is_ia32_task(): x32 syscalls should be AUDIT_ARCH_X86_64, not

CONFIG_AUDITSYSCALL is currently incompatible with x32, so this has
no visible effect.

Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/a0138ed8c709882aec06e4acc30bfa9b623b8717.1409954077.git.luto@xxxxxxxxxxxxxx
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

arch/x86/kernel/ptrace.c | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)

--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -1441,15 +1441,6 @@ void send_sigtrap(struct task_struct *ts
force_sig_info(SIGTRAP, &info, tsk);

-#ifdef CONFIG_X86_32
-# define IS_IA32 1
-#elif defined CONFIG_IA32_EMULATION
-# define IS_IA32 is_compat_task()
-# define IS_IA32 0
* We must return the syscall number to actually look up in the table.
* This can be -1L to skip running any syscall at all.
@@ -1487,7 +1478,7 @@ long syscall_trace_enter(struct pt_regs
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->orig_ax);

- if (IS_IA32)
+ if (is_ia32_task())
regs->bx, regs->cx,

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