From ae7eda212f38e24b4c68a0b65784fbb6d4716ea3 Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Sun, 16 Oct 2016 08:13:55 +0200
Subject: report: add another report format for hung tasks

---
 report/report.go      |  4 ++++
 report/report_test.go | 21 +++++++++++++++++++++
 2 files changed, 25 insertions(+)

(limited to 'report')

diff --git a/report/report.go b/report/report.go
index df241ed24..241f806b5 100644
--- a/report/report.go
+++ b/report/report.go
@@ -111,6 +111,10 @@ var oopses = []*oops{
 				compile("INFO: suspicious RCU usage(?:.*\n.*)+(?: |\n|\t){{SRC}}"),
 				"suspicious RCU usage at %[1]v",
 			},
+			{
+				compile("INFO: task .* blocked for more than [0-9]+ seconds"),
+				"INFO: task hung",
+			},
 		},
 	},
 	&oops{
diff --git a/report/report_test.go b/report/report_test.go
index f7f3922b0..d11e8f313 100644
--- a/report/report_test.go
+++ b/report/report_test.go
@@ -408,6 +408,27 @@ BUG: soft lockup - CPU#3 stuck for 11s! [syz-executor:643]
 BUG: spinlock lockup suspected on CPU#2, syz-executor/12636
 `: `BUG: soft lockup`,
 
+		`
+[  843.240752] INFO: task getty:2986 blocked for more than 120 seconds.
+[  843.247365]       Not tainted 3.18.0-13280-g93f6785-dirty #12
+[  843.253777] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+[  843.261764] getty           D ffffffff83e27d60 28152  2986      1 0x00000002
+[  843.269316]  ffff88005bb6f908 0000000000000046 ffff880050b6ab70 ffff880061e1c5d0
+[  843.277435]  fffffbfff07c4802 ffff880061e1cde8 ffffffff83e27d60 ffff88005cb71580
+[  843.285515]  ffff88005bb6f968 0000000000000000 1ffff1000b76df2b ffff88005cb71580
+[  843.293802] Call Trace:
+[  843.296385]  [<ffffffff835bdeb4>] schedule+0x64/0x160
+[  843.301593]  [<ffffffff835c9c1a>] schedule_timeout+0x2fa/0x5d0
+[  843.307563]  [<ffffffff835c9920>] ? console_conditional_schedule+0x30/0x30
+[  843.314790]  [<ffffffff811c1eb2>] ? pick_next_task_fair+0xeb2/0x1680
+[  843.321296]  [<ffffffff81d9b3ed>] ? check_preemption_disabled+0x3d/0x210
+[  843.328311]  [<ffffffff835cb4ec>] ldsem_down_write+0x1ac/0x357
+[  843.334295]  [<ffffffff835cb340>] ? ldsem_down_read+0x3a0/0x3a0
+[  843.340437]  [<ffffffff835bec62>] ? preempt_schedule+0x62/0xa0
+[  843.346418]  [<ffffffff835cbdd2>] tty_ldisc_lock_pair_timeout+0xb2/0x160
+[  843.353363]  [<ffffffff81f8b03f>] tty_ldisc_hangup+0x21f/0x720
+`: `INFO: task hung`,
+
 		`
 BUG UNIX (Not tainted): kasan: bad access detected
 `: "",
-- 
cgit mrf-deployment