diff options
Diffstat (limited to 'arch/s390/kernel/ptrace.c')
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index cea17010448f..9336e824e2db 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -821,6 +821,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) { + unsigned long mask = -1UL; + /* * The sysc_tracesys code in entry.S stored the system * call number to gprs[2]. @@ -846,9 +848,12 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT))) trace_sys_enter(regs, regs->gprs[2]); - audit_syscall_entry(regs->gprs[2], regs->orig_gpr2, - regs->gprs[3], regs->gprs[4], - regs->gprs[5]); + if (is_compat_task()) + mask = 0xffffffff; + + audit_syscall_entry(regs->gprs[2], regs->orig_gpr2 & mask, + regs->gprs[3] &mask, regs->gprs[4] &mask, + regs->gprs[5] &mask); return regs->gprs[2]; } |