debuggerd can't handle debuggerd crashes
When a process receives a fatal signal, it connects to debuggerd
and initiates a conversation over a socket. When the crashing
process is debuggerd, the conversation stalls forever, and you
stop getting native crash details.
This resets the signal handlers to SIG_DFL, so that debuggerd
simply crashes and gets restarted.
Bug 5035703
Change-Id: Ie081d710d046f701bca7e7d8ea3e1d24766d9f61
diff --git a/debuggerd/debuggerd.c b/debuggerd/debuggerd.c
index 685f147..892bc99 100644
--- a/debuggerd/debuggerd.c
+++ b/debuggerd/debuggerd.c
@@ -695,6 +695,18 @@
struct sigaction act;
int logsocket = -1;
+ /*
+ * debuggerd crashes can't be reported to debuggerd. Reset all of the
+ * crash handlers.
+ */
+ signal(SIGILL, SIG_DFL);
+ signal(SIGABRT, SIG_DFL);
+ signal(SIGBUS, SIG_DFL);
+ signal(SIGFPE, SIG_DFL);
+ signal(SIGSEGV, SIG_DFL);
+ signal(SIGSTKFLT, SIG_DFL);
+ signal(SIGPIPE, SIG_DFL);
+
logsocket = socket_local_client("logd",
ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM);
if(logsocket < 0) {