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[PULL,19/44] linux-user: Restart exit() if signal pending

Message ID a0995886e23323258d0612c71f8b0416a02806f2.1465392531.git.riku.voipio@linaro.org
State New
Headers show

Commit Message

Riku Voipio June 8, 2016, 1:30 p.m. UTC 
From: Timothy E Baldwin <T.E.Baldwin99@members.leeds.ac.uk>

Without this a signal could vanish on thread exit.

Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
Message-id: 1441497448-32489-26-git-send-email-T.E.Baldwin99@members.leeds.ac.uk
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
---
 linux-user/syscall.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
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Patch

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index aa5517c..f3061a9 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -6640,8 +6640,12 @@  abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
            However in threaded applictions it is used for thread termination,
            and _exit_group is used for application termination.
            Do thread termination if we have more then one thread.  */
-        /* FIXME: This probably breaks if a signal arrives.  We should probably
-           be disabling signals.  */
+
+        if (block_signals()) {
+            ret = -TARGET_ERESTARTSYS;
+            break;
+        }
+
         if (CPU_NEXT(first_cpu)) {
             TaskState *ts;