2006-10-01 20:01:34

by Andi Kleen

[permalink] [raw]
Subject: Please report all left over "DWARF2 unwinder stucks"


All the fixes for known "DWARF2 unwinder stuck at ..." are
in Linus -git mainline now.

If you still see any with current -git please report them.

Thanks,

-Andi


2006-10-01 21:14:43

by Dave Jones

[permalink] [raw]
Subject: Re: [discuss] Please report all left over "DWARF2 unwinder stucks"

On Sun, Oct 01, 2006 at 10:01:20PM +0200, Andi Kleen wrote:
>
> All the fixes for known "DWARF2 unwinder stuck at ..." are
> in Linus -git mainline now.
>
> If you still see any with current -git please report them.

I'm doing a 2.6.18 update for Fedora users soon, so I'll try
and scoop up all these and backport them. If any pop out of
the woodwork after that, I'll let you know.

Dave

2006-10-02 10:03:12

by Andi Kleen

[permalink] [raw]
Subject: Re: [discuss] Please report all left over "DWARF2 unwinder stucks"

On Sunday 01 October 2006 23:14, Dave Jones wrote:
> On Sun, Oct 01, 2006 at 10:01:20PM +0200, Andi Kleen wrote:
> >
> > All the fixes for known "DWARF2 unwinder stuck at ..." are
> > in Linus -git mainline now.
> >
> > If you still see any with current -git please report them.
>
> I'm doing a 2.6.18 update for Fedora users soon, so I'll try
> and scoop up all these and backport them. If any pop out of
> the woodwork after that, I'll let you know.

That's a lot of patches. But ok your call.

-Andi

2006-10-02 19:05:31

by Roland Dreier

[permalink] [raw]
Subject: Re: Please report all left over "DWARF2 unwinder stucks"

Hi Andi, I just got this with Linus's -git updated as of this morning
(head is 95f3eff6997ae4a6754c1d874ec0a414d97c44d1). The soft lockup
is a bug in code I was testing but I was only touching drivers/infiniband,
so it shouldn't make a difference for this.

Let me know if there's any more info you need.

[ 971.926760] BUG: soft lockup detected on CPU#0!
[ 971.940287]
[ 971.940288] Call Trace:
[ 971.952076] [<ffffffff8026018f>] show_trace+0x34/0x47
[ 971.967433] [<ffffffff802601b4>] dump_stack+0x12/0x17
[ 971.982793] [<ffffffff80294a10>] softlockup_tick+0xdb/0xed
[ 971.999517] [<ffffffff8027e49e>] update_process_times+0x42/0x68
[ 972.017521] [<ffffffff802677d0>] smp_local_timer_interrupt+0x23/0x47
[ 972.036770] [<ffffffff80267c7a>] smp_apic_timer_interrupt+0x38/0x3e
[ 972.055761] [<ffffffff80254ce6>] apic_timer_interrupt+0x66/0x70
[ 972.073697] DWARF2 unwinder stuck at apic_timer_interrupt+0x66/0x70
[ 972.092424]
[ 972.096886] Leftover inexact backtrace:
[ 972.096887]
[ 972.112815] <IRQ> [<ffffffff802596dc>] _spin_unlock_irqrestore+0x8/0x9
[ 972.132905] [<ffffffff880a628e>] :ib_ipath:ipath_req_notify_cq+0x4b/0x55
[ 972.153190] [<ffffffff88227e02>] :ib_ipoib:ipoib_poll+0x4a0/0x540
[ 972.171661] [<ffffffff8020b4c1>] net_rx_action+0xa4/0x161
[ 972.188056] [<ffffffff8020f953>] __do_softirq+0x55/0xc4
[ 972.203933] [<ffffffff80316df1>] end_msi_irq_wo_maskbit+0x9/0x16
[ 972.222146] [<ffffffff8025523c>] call_softirq+0x1c/0x30
[ 972.238023] [<ffffffff8026116a>] do_softirq+0x2c/0x7e
[ 972.253382] [<ffffffff80261135>] do_IRQ+0x61/0x6a
[ 972.267703] [<ffffffff8025fa18>] default_idle+0x0/0x47
[ 972.283321] [<ffffffff80254631>] ret_from_intr+0x0/0xa
[ 972.298938] <EOI> [<ffffffff8025fa41>] default_idle+0x29/0x47
[ 972.316688] [<ffffffff802418a4>] cpu_idle+0x50/0x6f
[ 972.331525] [<ffffffff80520682>] start_kernel+0x211/0x216
[ 972.347924] [<ffffffff8052015a>] _sinittext+0x15a/0x15e

2006-10-02 19:50:54

by Andi Kleen

[permalink] [raw]
Subject: Re: [discuss] Re: Please report all left over "DWARF2 unwinder stucks"


> [ 971.940288] Call Trace:
> [ 971.952076] [<ffffffff8026018f>] show_trace+0x34/0x47
> [ 971.967433] [<ffffffff802601b4>] dump_stack+0x12/0x17
> [ 971.982793] [<ffffffff80294a10>] softlockup_tick+0xdb/0xed
> [ 971.999517] [<ffffffff8027e49e>] update_process_times+0x42/0x68
> [ 972.017521] [<ffffffff802677d0>] smp_local_timer_interrupt+0x23/0x47
> [ 972.036770] [<ffffffff80267c7a>] smp_apic_timer_interrupt+0x38/0x3e
> [ 972.055761] [<ffffffff80254ce6>] apic_timer_interrupt+0x66/0x70
> [ 972.073697] DWARF2 unwinder stuck at apic_timer_interrupt+0x66/0x70

Thanks. Fixed that one.

-Andi

2006-10-02 23:13:09

by Sergio Monteiro Basto

[permalink] [raw]
Subject: Re: [discuss] Re: Please report all left over "DWARF2 unwinder stucks"



On Mon, 2006-10-02 Andi Kleen wrote:

>All the fixes for known "DWARF2 unwinder stuck at ..." are
>in Linus -git mainline now.
>
>If you still see any with current -git please report them.
>
>Thanks,
>
>-Andi

Hi got one DWARF2 when eth1 is going down (usbnet, cdc_ether).
I got it with git6, 7 or 8 ( I don't remember well), with git 10 no and
with git 18 I got it again.

Option report_lost_tickets, now send a lot of messages

Last note I strip all RedHat patches, now is just linux-2.6.18 with gits
and strip also .config


--
S?rgio M.B.


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2006-10-04 14:24:13

by Sergio Monteiro Basto

[permalink] [raw]
Subject: Re: [discuss] Re: Please report all left over "DWARF2 unwinder stucks"

Hi, I am resending the message. Only yesterday, I notice that I send my
emails via localhost with sendmail, which gave some problems.

On Tue, 2006-10-03 at 00:12 +0100, Sergio Monteiro Basto wrote:
>
> Hi got one DWARF2 when eth1 is going down (usbnet, cdc_ether).

(I mean when I do service network stop )

> I got it with git6, 7 or 8 ( I don't remember well), with git 10 no and
> with git 18 I got it again.
>
> Option report_lost_tickets, now send a lot of messages
>
> Last note I strip all RedHat patches, now is just linux-2.6.18 with gits
> and strip also .config

I dont know if it help (with git20), I made a test and boot up without
Option notsc , I got other DWARF2 ...

Let me know if you need some more information or test.

Thanks,
--
Sérgio M.B.


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