diff options
Diffstat (limited to 'arch/arm/kernel/ptrace.c')
| -rw-r--r-- | arch/arm/kernel/ptrace.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index 518536d93fba..03deeffd9f6d 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -957,17 +957,23 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno) return scno; } -asmlinkage int syscall_trace_exit(struct pt_regs *regs, int scno) +asmlinkage void syscall_trace_exit(struct pt_regs *regs) { - current_thread_info()->syscall = scno; - - if (test_thread_flag(TIF_SYSCALL_TRACE)) - scno = tracehook_report_syscall(regs, PTRACE_SYSCALL_EXIT); + /* + * Audit the syscall before anything else, as a debugger may + * come in and change the current registers. + */ + audit_syscall_exit(regs); + /* + * Note that we haven't updated the ->syscall field for the + * current thread. This isn't a problem because it will have + * been set on syscall entry and there hasn't been an opportunity + * for a PTRACE_SET_SYSCALL since then. + */ if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) - trace_sys_exit(regs, scno); - - audit_syscall_exit(regs); + trace_sys_exit(regs, regs_return_value(regs)); - return scno; + if (test_thread_flag(TIF_SYSCALL_TRACE)) + tracehook_report_syscall(regs, PTRACE_SYSCALL_EXIT); } |