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+This problem was created by the upstream commit 78708b7c8c
+After applying the commit, it will send SIGINT to the process group(-signal_pid).
+But if we use gdbserver send SIGINT, and the attached process is not a process
+group leader, then the "kill (-signal_pid, SIGINT)" returns error and fails  to
+interrupt the attached process.
+
+Upstream-Status: Submitted
+[https://sourceware.org/bugzilla/show_bug.cgi?id=18945]
+
+Author: Josh Gao
+Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com>
Index: gdb-8.2/gdb/gdbserver/linux-low.c
===================================================================
--- gdb-8.2.orig/gdb/gdbserver/linux-low.c
+++ gdb-8.2/gdb/gdbserver/linux-low.c
@@ -5940,9 +5940,7 @@ linux_look_up_symbols (void)
 static void
 linux_request_interrupt (void)
 {
-  /* Send a SIGINT to the process group.  This acts just like the user
-     typed a ^C on the controlling terminal.  */
-  kill (-signal_pid, SIGINT);
+  kill (signal_pid, SIGINT);
 }
 
 /* Copy LEN bytes from inferior's auxiliary vector starting at OFFSET