On Thu, 12 Nov 2009 18:38:53 +0100
Oleg Nesterov <oleg@xxxxxxxxxx> wrote:
> Change tracehook_report_syscall_exit() to look at step flag and send
> the trap signal if needed.
>
> This change affects ia64, microblaze, parisc, powerpc, sh. They pass
> nonzero "step" argument to tracehook but since it was ignored the tracee
> reports via ptrace_notify(), this is not right and not consistent.
This patch conflicts with utrace-core.patch a bit:
***************
*** 134,139 ****
*/
static inline void tracehook_report_syscall_exit(struct pt_regs *regs, int step)
{
ptrace_report_syscall(regs);
}
--- 140,147 ----
*/
static inline void tracehook_report_syscall_exit(struct pt_regs *regs, int step)
{
+ if (task_utrace_flags(current) & UTRACE_EVENT(SYSCALL_EXIT))
+ utrace_report_syscall_exit(regs);
ptrace_report_syscall(regs);
}
I did this:
static inline void tracehook_report_syscall_exit(struct pt_regs *regs, int step)
{
if (step) {
siginfo_t info;
user_single_step_siginfo(current, regs, &info);
force_sig_info(SIGTRAP, &info, current);
return;
}
+ if (task_utrace_flags(current) & UTRACE_EVENT(SYSCALL_EXIT))
+ utrace_report_syscall_exit(regs);
ptrace_report_syscall(regs);
}
utrace-core.patch is getting rather old. What is its status?
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