[PATCH v3 4/4] panic: use sys_info_with_filter() to avoid duplicate backtraces

[Bradley Morgan <include@grrlz.net>]

panic_other_cpus_shutdown() handles SYS_INFO_ALL_BT before stopping the
other CPUs. Do not ask sys_info() to handle that bit again later in the
panic path.

Use sys_info_with_filter() so panic_print=all_bt does not request more
output after the CPUs are stopped.

Fixes: a9af76a78760 ("watchdog: add sys_info sysctls to dump sys info on system lockup")
Cc: stable@vger.kernel.org
Signed-off-by: Bradley Morgan <include@grrlz.net>
---
 kernel/panic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/panic.c b/kernel/panic.c
index 213725b612aa..eb842823df61 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -680,7 +680,7 @@ void vpanic(const char *fmt, va_list args)
 	 */
 	atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
 
-	sys_info(panic_print);
+	sys_info_with_filter(panic_print, SYS_INFO_ALL_BT);
 
 	kmsg_dump_desc(KMSG_DUMP_PANIC, buf);
 
-- 
2.53.0