ARM: 7525/1: ptrace: use updated syscall number for syscall auditing
When tracing system calls, a debugger may change the syscall number
in response to a SIGTRAP on syscall entry.
This patch ensures that the new syscall number is passed to the audit
code.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index c382d3c..739db3a 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -944,19 +944,19 @@
asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno)
{
- int ret = ptrace_syscall_trace(regs, scno, PTRACE_SYSCALL_ENTER);
+ scno = ptrace_syscall_trace(regs, scno, PTRACE_SYSCALL_ENTER);
if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
- trace_sys_enter(regs, ret);
+ trace_sys_enter(regs, scno);
audit_syscall_entry(AUDIT_ARCH_ARM, scno, regs->ARM_r0, regs->ARM_r1,
regs->ARM_r2, regs->ARM_r3);
- return ret;
+ return scno;
}
asmlinkage int syscall_trace_exit(struct pt_regs *regs, int scno)
{
- int ret = ptrace_syscall_trace(regs, scno, PTRACE_SYSCALL_EXIT);
+ scno = ptrace_syscall_trace(regs, scno, PTRACE_SYSCALL_EXIT);
if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
- trace_sys_exit(regs, ret);
+ trace_sys_exit(regs, scno);
audit_syscall_exit(regs);
- return ret;
+ return scno;
}