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authorLuc Michel <luc.michel@greensocs.com>2019-01-07 15:23:46 +0000
committerPeter Maydell <peter.maydell@linaro.org>2019-01-07 15:23:46 +0000
commit160d858dd6c62c4b523350d89cfa75f212f49b92 (patch)
tree6e35f06dc40f9a98c05ddd539522d59f435dd996
parent970ed9064aa9f997fd9e65d707dd5cafc7360703 (diff)
downloadqemu-arm-160d858dd6c62c4b523350d89cfa75f212f49b92.tar.gz
gdbstub: gdb_set_stop_cpu: ignore request when process is not attached
When gdb_set_stop_cpu() is called with a CPU associated to a process currently not attached by the GDB client, return without modifying the stop CPU. Otherwise, GDB gets confused if it receives packets with a thread-id it does not know about. Signed-off-by: Luc Michel <luc.michel@greensocs.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Message-id: 20181207090135.7651-15-luc.michel@greensocs.com [PMM: fix checkpatch comment style nit] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--gdbstub.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/gdbstub.c b/gdbstub.c
index 432e7d2f7d..1517563abe 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -1798,6 +1798,16 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
void gdb_set_stop_cpu(CPUState *cpu)
{
+ GDBProcess *p = gdb_get_cpu_process(gdbserver_state, cpu);
+
+ if (!p->attached) {
+ /*
+ * Having a stop CPU corresponding to a process that is not attached
+ * confuses GDB. So we ignore the request.
+ */
+ return;
+ }
+
gdbserver_state->c_cpu = cpu;
gdbserver_state->g_cpu = cpu;
}