[PATCH 1/1] sandbox: don't set SA_NODEFER in signal handler

[Heinrich Schuchardt]

The sandbox can handle signals. Due to a damaged global data pointer
additional exceptions in the signal handler may occur leading to an endless
loop. In this case leave the handling of the secondary exception to the
operating system.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
 arch/sandbox/cpu/os.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index 0d21827e1b..9a73ae3b18 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -226,7 +226,7 @@ int os_setup_signal_handlers(void)

 	act.sa_sigaction = os_signal_handler;
 	sigemptyset(&act.sa_mask);
-	act.sa_flags = SA_SIGINFO | SA_NODEFER;
+	act.sa_flags = SA_SIGINFO;
 	if (sigaction(SIGILL, &act, NULL) ||
 	    sigaction(SIGBUS, &act, NULL) ||
 	    sigaction(SIGSEGV, &act, NULL))
--
2.30.2