From: Daan De Meyer <daan.j.demeyer@gmail.com>
Date: Thu, 2 Jun 2022 13:32:44 +0000 (+0200)
Subject: basic: Propagate SIGBUS signal info when re-raising signals
X-Git-Tag: v252-rc1~858
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=647475c7df4d13e30c328e6697231781d9d83d46;p=thirdparty%2Fsystemd.git

basic: Propagate SIGBUS signal info when re-raising signals

raise() won't propagate the siginfo information of the signal that's
re-raised. rt_sigqueueinfo() allows us to provide the original siginfo
struct which makes sure it is propagated to the next signal handler
(or to the coredump).
---

diff --git a/src/basic/sigbus.c b/src/basic/sigbus.c
index 8ff060a8d1e..95ecb60fe22 100644
--- a/src/basic/sigbus.c
+++ b/src/basic/sigbus.c
@@ -7,6 +7,8 @@
 
 #include "macro.h"
 #include "memory-util.h"
+#include "missing_syscall.h"
+#include "process-util.h"
 #include "sigbus.h"
 
 #define SIGBUS_QUEUE_MAX 64
@@ -88,7 +90,7 @@ static void sigbus_handler(int sn, siginfo_t *si, void *data) {
 
         if (si->si_code != BUS_ADRERR || !si->si_addr) {
                 assert_se(sigaction(SIGBUS, &old_sigaction, NULL) == 0);
-                raise(SIGBUS);
+                rt_sigqueueinfo(getpid_cached(), SIGBUS, si);
                 return;
         }