More gdb filtering for glibc 2.41 with debuginfo installed

(cherry picked from commit 3404f08)

Author: Mark Wielaard

gdbserver_tests/filter_gdb.in

@@ -137,6 +137,12 @@ s/in _dl_sysinfo_int80 () from \/lib\/ld-linux.so.*/in syscall .../
 #      in __syscall_cancel_arch is just in a syscall
 s/in __syscall_cancel_arch .*/in syscall .../
 
+#	as is just __syscall_cancel_arch
+s/__syscall_cancel_arch .*/0x........ in syscall .../
+
+#	gdb with source might figure out there is just a ret instruction
+/^[1-9][0-9\t ]*ret$/d
+
 #	do_syscall is in syscall
 s/__libc_do_syscall ().*/0x........ in syscall .../