Comment 44 for bug 1483343

------- Comment From <email address hidden> 2016-10-06 01:24 EDT-------
Externalizing comment 61 and 62
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The Same test is causing problem in ubuntu kernel version 4.8.0-17-generic.
Got below call traces:
[48755.933755] 112-...: (2 ticks this GP) idle=b95/140000000000000/0 softirq=11738/11738 fqs=2829432
[48755.933979] 118-...: (5 ticks this GP) idle=011/140000000000000/0 softirq=6041/6041 fqs=2829432
[48755.934264] (detected by 29, t=11947979 jiffies, g=5047, c=5046, q=1984242)
[48692.907932] Call Trace:
[48692.907934] [c0000017e8a83980] [c0000000000d57f8] irq_exit+0x98/0x100 (unreliable)
[48692.907936] [c0000017e8a839a0] [c000000000024810] timer_interrupt+0xa0/0xe0
[48692.907938] [c0000017e8a839d0] [c000000000002814] decrementer_common+0x114/0x180
[48692.907942] --- interrupt: 901 at _cond_resched+0x0/0xa0
LR = stutter_wait+0x8c/0x130 [torture]
[48692.907945] [c0000017e8a83cc0] [d0000000158e0348] torture_rwlock_write_lock_irq+0x30/0x60 [locktorture] (unreliable)
[48692.907948] [c0000017e8a83cf0] [d0000000158e0a88] lock_torture_writer+0xc0/0x270 [locktorture]
[48692.907950] [c0000017e8a83d80] [c0000000000fd120] kthread+0x110/0x130
[48692.907954] [c0000017e8a83e30] [c0000000000098f0] ret_from_kernel_thread+0x5c/0x6c

This call traces keeps displaying from the time we execute the script and system is in hanged state.
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Issue is seen in ubuntu 16.10 as well.

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Canonical,

May we have some attention on this issue.

Thanks,
Chandan