- Bring the PTRACE_SYSEMU semantics in line with the man page.

- Annotate variable assignment in get_user() with the type to avoid
   sparse warnings.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAl7H+w0ACgkQa9axLQDI
 XvEiVQ//azhBez3lTHeEgh2p45d75Na8HrrHjGGvQ9lhvtMBisrh/N7fp41Fl1vY
 2nG3YJqUY7SZJG2EZkF7OQOMHUjpGE3kHJX3YAn6dCk2RzNDe1TCXKrP0r7xkbLh
 OW3MpBsUbGksR8THYJsZ+GiTLZ/BrnZJjpJxcMHNwxnNZeVKT1OY4nJSebUo5Rdf
 4lm1jMuSiKuHHfkucp1UsGe3QQxsWYpFahjMgU/iCm3BhlzWvocV8NNG6na10SIb
 unT4+sXmFM/0pzVFBSdObmeEik4wSibkKh76A8z0SROMkPCtigu2n9RdDtii22ia
 uiixQ6CkEYaXaGBXFqjE50dKkMCH0EYpZiEPp22QGHkLRSKI6ZZi0wvQmTvYNLMI
 3a6Ptw0u9Ym/MH17HmjCiBuEfWOQeNhOM8YRcMqhHoguTz6Xj/mglbX8DDC37YAw
 MnGNH0a/uhBy35eujgW92b2wvNMWcYnuRSiSX8/PSsG3Hxe36nWTI8y20dQ88wAR
 wTqzNExmWDQqbTmaSAM0gGfDPkaSiiY+WDAO2FdB/jtovmefB/RBXVmwqbjBsigX
 OtXuyF/rVitZ6S3SXal5YBT4xey/MI4NRbnwCm4edXyz+Hz7cDM2iQwDBaiaVZj8
 4QHn+TqJTUKWeHRfLuMzg2a5UbCnEZGVBNEPtVxx9bSGqjQ2o+Q=
 =HdPI
 -----END PGP SIGNATURE-----

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Bring the PTRACE_SYSEMU semantics in line with the man page.

 - Annotate variable assignment in get_user() with the type to avoid
   sparse warnings.

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Add get_user() type annotation on the !access_ok() path
  arm64: Fix PTRACE_SYSEMU semantics

arch/arm64/include/asm/uaccess.h

@@ -304,7 +304,7 @@ do {									\
 		__p = uaccess_mask_ptr(__p);				\
 		__raw_get_user((x), __p, (err));			\
 	} else {							\
-		(x) = 0; (err) = -EFAULT;				\
+		(x) = (__force __typeof__(x))0; (err) = -EFAULT;	\
 	}								\
 } while (0)
 

arch/arm64/kernel/ptrace.c

@@ -1829,10 +1829,11 @@ static void tracehook_report_syscall(struct pt_regs *regs,
 
 int syscall_trace_enter(struct pt_regs *regs)
 {
-	if (test_thread_flag(TIF_SYSCALL_TRACE) ||
-		test_thread_flag(TIF_SYSCALL_EMU)) {
+	unsigned long flags = READ_ONCE(current_thread_info()->flags);
+
+	if (flags & (_TIF_SYSCALL_EMU | _TIF_SYSCALL_TRACE)) {
 		tracehook_report_syscall(regs, PTRACE_SYSCALL_ENTER);
-		if (!in_syscall(regs) || test_thread_flag(TIF_SYSCALL_EMU))
+		if (!in_syscall(regs) || (flags & _TIF_SYSCALL_EMU))
 			return -1;
 	}