Commit ebb5e15c authored by Will Deacon's avatar Will Deacon Committed by Russell King
Browse files

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: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 1f66e06f

arch/arm/kernel/ptrace.c

+6 −6
Original line number Diff line number Diff line
@@ -944,19 +944,19 @@ static int ptrace_syscall_trace(struct pt_regs *regs, int scno, 


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;

}