[PATCH 07/13] mips: pass all six syscall args to audit_syscall_entry()

[Ricardo Robaina]

Use syscall_get_arguments() to retrieve all six arguments portably.
On 32-bit MIPS (O32 ABI), arguments 5 and 6 live on the user stack
rather than in registers, so direct register access would be wrong.

Signed-off-by: Ricardo Robaina <rroba...@redhat.com>
---
 arch/mips/kernel/ptrace.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 3f4c94c88124..9e6f9accdb41 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -1334,9 +1334,14 @@ asmlinkage long syscall_trace_enter(struct pt_regs *regs)
        if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
                trace_sys_enter(regs, regs->regs[2]);
 
-       audit_syscall_entry(current_thread_info()->syscall,
-                           regs->regs[4], regs->regs[5],
-                           regs->regs[6], regs->regs[7]);
+       {
+               unsigned long args[6];
+
+               syscall_get_arguments(current, regs, args);
+               audit_syscall_entry(current_thread_info()->syscall,
+                                   args[0], args[1], args[2], args[3],
+                                   args[4], args[5]);
+       }
 
        /*
         * Negative syscall numbers are mistaken for rejected syscalls, but
-- 
2.55.0