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* kernel crash with kernel 3.17-rc4
@ 2014-09-15 17:26 Thomas Stein
       [not found] ` <9699E135-38D8-4C09-88B1-BB8BE398035E@profihost.ag>
  0 siblings, 1 reply; 3+ messages in thread
From: Thomas Stein @ 2014-09-15 17:26 UTC (permalink / raw)
  To: linux-bcache

Hello eveybody.

Just played around with 3.17-rc4 and bcache. I've build bcache with a 120G SSD 
as caching device and a Raid1 device (md4) as backing device. Today under 
heavy i/o load (moving a 100G VM Image) the machine froze. Call trace is this:

Sep 15 10:13:48 hn kernel: [82567.843075] Task dump for CPU 0:
Sep 15 10:13:48 hn kernel: [82567.843078] bcache_gc       R  running task    
12248 28611      2 0x00080808
Sep 15 10:13:48 hn kernel: [82567.843083]  ffffffff81c411c0 ffff88083fa03d78 
ffffffff81071492 0000000000000000
Sep 15 10:13:48 hn kernel: [82567.843087]  ffffffff81c411c0 ffff88083fa03d98 
ffffffff810740b8 ffff88083fa03dd8
Sep 15 10:13:48 hn kernel: [82567.843090]  0000000000000000 ffff88083fa03dc8 
ffffffff8108f335 ffff88083fa0d280
Sep 15 10:13:48 hn kernel: [82567.843093] Call Trace:
Sep 15 10:13:48 hn kernel: [82567.843096]  <IRQ>  [<ffffffff81071492>] 
sched_show_task+0xc2/0x130
Sep 15 10:13:48 hn kernel: [82567.843108]  [<ffffffff810740b8>] 
dump_cpu_task+0x38/0x40
Sep 15 10:13:48 hn kernel: [82567.843119]  [<ffffffff8108f335>] 
rcu_dump_cpu_stacks+0x85/0xc0
Sep 15 10:13:48 hn kernel: [82567.843131]  [<ffffffff81092610>] 
rcu_check_callbacks+0x3c0/0x680
Sep 15 10:13:48 hn kernel: [82567.843135]  [<ffffffff81096e13>] 
update_process_times+0x43/0x80
Sep 15 10:13:48 hn kernel: [82567.843139]  [<ffffffff810a54f1>] 
tick_sched_handle.isra.13+0x31/0x40
Sep 15 10:13:48 hn kernel: [82567.843142]  [<ffffffff810a5667>] 
tick_sched_timer+0x47/0x70
Sep 15 10:13:48 hn kernel: [82567.843146]  [<ffffffff8109766b>] 
__run_hrtimer+0x7b/0x1c0
Sep 15 10:13:48 hn kernel: [82567.843149]  [<ffffffff810a5620>] ? 
tick_sched_do_timer+0x30/0x30
Sep 15 10:13:48 hn kernel: [82567.843153]  [<ffffffff81097e37>] 
hrtimer_interrupt+0xf7/0x230
Sep 15 10:13:48 hn kernel: [82567.843158]  [<ffffffff81033196>] 
local_apic_timer_interrupt+0x36/0x60
Sep 15 10:13:48 hn kernel: [82567.843162]  [<ffffffff810334de>] 
smp_apic_timer_interrupt+0x3e/0x60
Sep 15 10:13:48 hn kernel: [82567.843166]  [<ffffffff8166994a>] 
apic_timer_interrupt+0x6a/0x70
Sep 15 10:13:48 hn kernel: [82567.843168]  <EOI>  [<ffffffff8148f848>] ? 
btree_gc_count_keys+0x28/0x60
Sep 15 10:13:48 hn kernel: [82567.843175]  [<ffffffff8148f869>] ? 
btree_gc_count_keys+0x49/0x60
Sep 15 10:13:48 hn kernel: [82567.843178]  [<ffffffff814950b5>] 
btree_gc_recurse+0x1b5/0x320
Sep 15 10:13:48 hn kernel: [82567.843182]  [<ffffffff814904f3>] ? 
btree_gc_mark_node+0x63/0x240
Sep 15 10:13:48 hn kernel: [82567.843186]  [<ffffffff81080b2e>] ? 
__wake_up+0x4e/0x70
Sep 15 10:13:48 hn kernel: [82567.843190]  [<ffffffff81495635>] 
bch_btree_gc+0x415/0x5a0
Sep 15 10:13:48 hn kernel: [82567.843194]  [<ffffffff81080780>] ? 
finish_wait+0x80/0x80
Sep 15 10:13:48 hn kernel: [82567.843197]  [<ffffffff814957f8>] 
bch_gc_thread+0x38/0x120
Sep 15 10:13:48 hn kernel: [82567.843200]  [<ffffffff814957c0>] ? 
bch_btree_gc+0x5a0/0x5a0
Sep 15 10:13:48 hn kernel: [82567.843204]  [<ffffffff810672b4>] 
kthread+0xc4/0xe0
Sep 15 10:13:48 hn kernel: [82567.843207]  [<ffffffff810671f0>] ? 
kthread_worker_fn+0x150/0x150
Sep 15 10:13:48 hn kernel: [82567.843211]  [<ffffffff81668aac>] 
ret_from_fork+0x7c/0xb0
Sep 15 10:13:48 hn kernel: [82567.843214]  [<ffffffff810671f0>] ? 
kthread_worker_fn+0x150/0x150

That's it.  Should i be worried? It's a testing machine of course.

thanks and best regards
t.

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2014-09-15 18:35 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-09-15 17:26 kernel crash with kernel 3.17-rc4 Thomas Stein
     [not found] ` <9699E135-38D8-4C09-88B1-BB8BE398035E@profihost.ag>
2014-09-15 17:47   ` Thomas Stein
2014-09-15 18:35     ` Stefan Priebe

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