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authorSudeep Holla <sudeep.holla@arm.com>2019-05-23 10:06:15 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2019-06-05 17:51:17 +0100
commit15532fd6f57c297c45ef3f5c17d2fbcdcc8092e4 (patch)
tree62a174343e0da5c5e08082811366b23864cee0df /kernel/ptrace.c
parent616810360043183a9db73e39f5aadbe48952c383 (diff)
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ptrace: move clearing of TIF_SYSCALL_EMU flag to core
While the TIF_SYSCALL_EMU is set in ptrace_resume independent of any architecture, currently only powerpc and x86 unset the TIF_SYSCALL_EMU flag in ptrace_disable which gets called from ptrace_detach. Let's move the clearing of TIF_SYSCALL_EMU flag to __ptrace_unlink which gets executed from ptrace_detach and also keep it along with or close to clearing of TIF_SYSCALL_TRACE. Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'kernel/ptrace.c')
-rw-r--r--kernel/ptrace.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 5710d07e67cf..ab14654b2436 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -118,6 +118,9 @@ void __ptrace_unlink(struct task_struct *child)
BUG_ON(!child->ptrace);
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+#ifdef TIF_SYSCALL_EMU
+ clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
+#endif
child->parent = child->real_parent;
list_del_init(&child->ptrace_entry);