lkml.org 
[lkml]   [2014]   [Jun]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subjecthung task without any output
Hi all,

While fuzzing with trinity I've recently observed a situation with has started
occurring rather frequently.

I have my configuration set to do a trigger_all_cpu_backtrace() before executing
panic(), and that's exactly what happens in some cases.

The new thing which I started seeing is the following:

[ 4806.833452] Kernel panic - not syncing: hung_task: blocked tasks
[ 4806.834701] CPU: 26 PID: 3252 Comm: khungtaskd Not tainted 3.16.0-rc2-next-20140626-sasha-00023-g9256882-dirty #732
[ 4806.837672] 00000000003ffcda ffff880bb2d6bd38 ffffffffb1529940 0000000000000001
[ 4806.839784] ffffffffb26fecef ffff880bb2d6bdb8 ffffffffb151cb0f 0000000000000001
[ 4806.840057] 0000000000000008 ffff880bb2d6bdc8 ffff880bb2d6bd68 0000000000000001
[ 4806.840057] Call Trace:
[ 4806.840057] [<ffffffffb1529940>] dump_stack+0x4f/0x7c
[ 4806.840057] [<ffffffffb151cb0f>] panic+0xd2/0x217
[ 4806.840057] [<ffffffffae24273f>] watchdog+0x43f/0x620
[ 4806.840057] [<ffffffffae242389>] ? watchdog+0x89/0x620
[ 4806.840057] [<ffffffffae242300>] ? reset_hung_task_detector+0x20/0x20
[ 4806.840057] [<ffffffffae196718>] kthread+0x108/0x110
[ 4806.840057] [<ffffffffae196610>] ? kthread_create_on_node+0x260/0x260
[ 4806.840057] [<ffffffffb15774bc>] ret_from_fork+0x7c/0xb0
[ 4806.840057] [<ffffffffae196610>] ? kthread_create_on_node+0x260/0x260
[ 4806.840057] Dumping ftrace buffer:
[ 4806.840057] (ftrace buffer empty)
[ 4806.840057] Kernel Offset: 0x2d000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)

Without anything else to accompany it.


Thanks,
Sasha


\
 
 \ /
  Last update: 2014-06-27 03:41    [W:0.033 / U:0.604 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site