4d16a64 "introduce PT_SYSCALL_TRACE flag" breaks PTRACE_SYSEMU which doesn't set PT_SYSCALL_TRACE.
Change ptrace_report_syscall() to check TIF_SYSCALL_EMU as well. This can't conflict with utrace, this flag can only be set by ptrace.
Signed-off-by: Oleg Nesterov oleg@redhat.com --- include/linux/tracehook.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index b6812d4..90ca578 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -59,7 +59,7 @@ static inline void ptrace_report_syscall(struct pt_regs *regs) { int ptrace = current->ptrace;
- if (!(ptrace & PT_SYSCALL_TRACE)) + if (!(ptrace & PT_SYSCALL_TRACE) && !test_thread_flag(TIF_SYSCALL_EMU)) return;
ptrace_notify(SIGTRAP | ((ptrace & PT_TRACESYSGOOD) ? 0x80 : 0));