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authorWill Deacon <will.deacon@arm.com>2012-09-07 18:20:30 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-09-19 21:50:50 +0100
commitebb5e15c3eb942c047108063423d5d6a04b9f167 (patch)
tree373a08dafd6406c4e2dd2eafe872f00c03703c96 /arch/arm/kernel/ptrace.c
parent1f66e06fb6414732bef7bf4a071ef76a837badec (diff)
downloadop-kernel-dev-ebb5e15c3eb942c047108063423d5d6a04b9f167.zip
op-kernel-dev-ebb5e15c3eb942c047108063423d5d6a04b9f167.tar.gz
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>
Diffstat (limited to 'arch/arm/kernel/ptrace.c')
-rw-r--r--arch/arm/kernel/ptrace.c12
1 files changed, 6 insertions, 6 deletions
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 @@ 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;
}
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