From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Priebe <s.priebe@profihost.ag>
Subject: bcache_gc: BUG: soft lockup - CPU#4 stuck for 22s!
Date: Fri, 12 Sep 2014 06:02:08 +0200
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Hi,

while trying to use bcache on 3.17-rc4 i got those messages and a load 
of 1000.

Is this a known problem?

14-09-12 02:32:22     BUG: soft lockup - CPU#4 stuck for 23s! 
[bcache_gc:1585]
2014-09-12 02:31:54     INFO: rcu_sched self-detected stall on CPU { 4} 
(t=150009 jiffies g=1762124 c=1762123 q=235323)
2014-09-12 02:31:42     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:31:14     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:30:46     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:30:18     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:29:50     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:29:22     BUG: soft lockup - CPU#4 stuck for 23s! 
[bcache_gc:1585]
2014-09-12 02:28:54     INFO: rcu_sched self-detected stall on CPU { 4} 
(t=105006 jiffies g=1762124 c=1762123 q=209365)
2014-09-12 02:28:42     BUG: soft lockup - CPU#4 stuck for 23s! 
[bcache_gc:1585]
2014-09-12 02:28:14     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:27:46     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:27:18     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:26:50     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:26:22     BUG: soft lockup - CPU#4 stuck for 22s! 
[bcache_gc:1585]
2014-09-12 02:25:54     INFO: rcu_sched self-detected stall on CPU { 4} 
(t=60003 jiffies g=1762124 c=1762123 q=136221)
2014-09-12 02:25:42     BUG: soft lockup - CPU#4 stuck for 23s! 
[bcache_gc:1585]
2014-09-12 02:25:14     BUG: soft lockup - CPU#4 stuck for 23s! 
[bcache_gc:1585]
2014-09-12 02:24:46     BUG: soft lockup - CPU#4 stuck for 23s! 
[bcache_gc:1585]


Stefan