From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 22 Aug 2018 04:55:49 +0000 (-0700)
Subject: kernel/crash_core.c: print timestamp using time64_t
X-Git-Tag: v4.19-rc1~59^2~99
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=91bc9aaf746ae41016bd6b61a48133e162542574;p=linux.git

kernel/crash_core.c: print timestamp using time64_t

The get_seconds() call returns a 32-bit timestamp on some architectures,
and will overflow in the future.  The newer ktime_get_real_seconds()
always returns a 64-bit timestamp that does not suffer from this problem.

Link: http://lkml.kernel.org/r/20180618150329.941903-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Petr Tesarik <ptesarik@suse.cz>
Cc: Marc-Andr Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index a683bfb0530f..933cb3e45b98 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -344,7 +344,7 @@ void crash_save_vmcoreinfo(void)
 	if (vmcoreinfo_data_safecopy)
 		vmcoreinfo_data = vmcoreinfo_data_safecopy;
 
-	vmcoreinfo_append_str("CRASHTIME=%ld\n", get_seconds());
+	vmcoreinfo_append_str("CRASHTIME=%lld\n", ktime_get_real_seconds());
 	update_vmcoreinfo_note();
 }