[Qemu-devel] [PULL v2 6/7] linux-user: avoid treading on gprof's SIGPROF signals

[Laurent Vivier <laurent@vivier.eu>]

From: Alex Bennée <alex.bennee@linaro.org>

The guest tends to get confused when it receives signals it doesn't
know about. Given the gprof magic has also set up it's own handler we
would do well to avoid stomping on it as well.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20190502145846.26226-1-alex.bennee@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 linux-user/signal.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/linux-user/signal.c b/linux-user/signal.c
index e2c0b3717357..44b2d3b35a0d 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -508,6 +508,11 @@ void signal_init(void)
     act.sa_flags = SA_SIGINFO;
     act.sa_sigaction = host_signal_handler;
     for(i = 1; i <= TARGET_NSIG; i++) {
+#ifdef TARGET_GPROF
+        if (i == SIGPROF) {
+            continue;
+        }
+#endif
         host_sig = target_to_host_signal(i);
         sigaction(host_sig, NULL, &oact);
         if (oact.sa_sigaction == (void *)SIG_IGN) {
-- 
2.20.1