From mboxrd@z Thu Jan  1 00:00:00 1970
From: "John Kacur" <jkacur@gmail.com>
Subject: Re: 2.6.26.3-rt3 bug report
Date: Tue, 26 Aug 2008 01:15:03 +0200
Message-ID: <520f0cf10808251615r5953794x9816bd58ea771ab3@mail.gmail.com>
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Cc: "Thomas Gleixner" <tglx@linutronix.de>,
	"Ingo Molnar" <mingo@elte.hu>
To: "Steven Rostedt" <rostedt@goodmis.org>,
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	RT <linux-rt-users@vger.kernel.org>
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On Mon, Aug 25, 2008 at 12:51 AM, John Kacur <jkacur@gmail.com> wrote:
> I haven't seen this one before.
>
> Bad page state in process 'firefox-bin'
> page:ffffe20001011f00 flags:0x0100000000000000
> mapping:ffffe20001011f18 mapcount:0 count:0
> Trying to fix it up, but a reboot is needed
> Backtrace:
> Pid: 4180, comm: firefox-bin Tainted: G        W 2.6.26.3-rt3 #3
>
> Call Trace:
>  [<ffffffff80287a72>] bad_page+0x6f/0x9d
>  [<ffffffff8029184c>] ? inc_zone_page_state+0x5f/0x6b
>  [<ffffffff80289046>] free_hot_cold_page+0x88/0x1e6
>  [<ffffffff8028920b>] free_hot_page+0x10/0x12
>  [<ffffffff8028922a>] __free_pages+0x1d/0x26
>  [<ffffffff80294b95>] __pte_alloc+0x8e/0x99
>  [<ffffffff80294cff>] handle_mm_fault+0x15f/0x766
>  [<ffffffff8045f2d6>] ? rt_mutex_down_read_trylock+0x1ee/0x1f9
>  [<ffffffff804629d9>] do_page_fault+0x51d/0x92c
>  [<ffffffff8021251c>] ? native_sched_clock+0x2a/0x72
>  [<ffffffff8027c930>] ? ftrace_now+0x9/0xb
>  [<ffffffff80281548>] ? tracing_hist_preempt_start+0xf1/0x10d
>  [<ffffffff8021251c>] ? native_sched_clock+0x2a/0x72
>  [<ffffffff8027c930>] ? ftrace_now+0x9/0xb
>  [<ffffffff804602f9>] error_exit+0x0/0x56
>
> ---------------------------
> | preempt count: 00000000 ]
> | 0-level deep critical section nesting:
> ----------------------------------------
>

Slightly different form today.

Bad page state in process 'firefox-bin'
page:ffffe20000daa360 flags:0x0100000000000000
mapping:ffffe20000daa378 mapcount:0 count:0
Trying to fix it up, but a reboot is needed
Backtrace:
Pid: 16955, comm: firefox-bin Not tainted 2.6.26.3-rt3 #3

Call Trace:
 [<ffffffff80287a72>] bad_page+0x6f/0x9d
 [<ffffffff8029184c>] ? inc_zone_page_state+0x5f/0x6b
 [<ffffffff80289046>] free_hot_cold_page+0x88/0x1e6
 [<ffffffff8028920b>] free_hot_page+0x10/0x12
 [<ffffffff8028922a>] __free_pages+0x1d/0x26
 [<ffffffff80294b95>] __pte_alloc+0x8e/0x99
 [<ffffffff80294cff>] handle_mm_fault+0x15f/0x766
 [<ffffffff8045f2d6>] ? rt_mutex_down_read_trylock+0x1ee/0x1f9
 [<ffffffff804629d9>] do_page_fault+0x51d/0x92c
 [<ffffffff8027f57a>] ? trace_hardirqs_off+0x11d/0x136
 [<ffffffff8045feeb>] ? __spin_unlock_irqrestore+0x29/0x4d
 [<ffffffff8045feeb>] ? __spin_unlock_irqrestore+0x29/0x4d
 [<ffffffff8023168b>] ? hrtick_set+0x8f/0x100
 [<ffffffff8021251c>] ? native_sched_clock+0x2a/0x72
 [<ffffffff8027c930>] ? ftrace_now+0x9/0xb
 [<ffffffff80281a97>] ? tracing_hist_preempt_stop+0x2cb/0x2f5
 [<ffffffff8020c94d>] ? retint_swapgs+0xe/0x13
 [<ffffffff8045f52c>] ? trace_hardirqs_on_thunk+0x3a/0x3c
 [<ffffffff804602f9>] error_exit+0x0/0x56

---------------------------
| preempt count: 00000000 ]
| 0-level deep critical section nesting:
----------------------------------------