linux-kernel - Re: x86_64 arch+SMP ON+linux-2.6.32.46+E1000+KGDBOE = Timed out. Ignoring packet error, continuing...

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Message-ID: <CAJXQGfKRkSOSo12Daimias-VHxvgjZDH4rJi0XZAd3o9-9eCfg@mail.gmail.com>
Date:	Wed, 8 Feb 2012 12:46:04 +0530
From:	Naresh Bhat <nareshgbhat@...il.com>
To:	Yong Zhang <yong.zhang0@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: x86_64 arch+SMP ON+linux-2.6.32.46+E1000+KGDBOE = Timed out.
 Ignoring packet error, continuing...

Hi Yong,

Yes, I know they have removed the KGDBOE support. I have forward
ported the patch to linux-2.6.32.46 kernel. I was just trying to
understand this issue belongs to which of the category ?

1. Is there any issue with Ethernet driver E1000 issue ?
2. Is it belongs to KGDB ?
3. Is there any kernel SMP hang issue for x86 64bit architecture which
is fixed in upstream kernel ?
4. None of the above and something else is broken ?

Is there any available patch ? any guidance to fix the error in E1000
driver.  I will really appreciate your help.

Thanks and Regards
-Naresh Bhat

On 2/8/12, Yong Zhang <yong.zhang0@...il.com> wrote:
> On Tue, Feb 07, 2012 at 09:38:49PM +0530, Naresh Bhat wrote:
>> Hi,
>>
>> I am trying KGDBOE on the following kernel
>
> Is KGDBOE supported by upstream? Actually I don't find it
> in the source tree.
>
> Thanks,
> Yong
>
>>
>> Kernel    -   linux-2.6.32.46 (With SMP set)
>> Hardware -  x86 64bit machine (Intel Nehlaum)
>> Ethernet   - E1000 driver is used
>>
>> But I am getting the following error
>>
>> ........
>> ............
>> .................
>> Breakpoint 2, sys_sync () at fs/sync.c:130
>> 130        wakeup_flusher_threads(0);
>> (gdb) s
>> wakeup_flusher_threads (nr_pages=0) at fs/fs-writeback.c:1005
>> 1005    {
>> (gdb) s
>>
>> Ignoring packet error, continuing...
>> Ignoring packet error, continuing...
>> Ignoring packet error, continuing...
>>
>>
>> Detailed logs with debug set :
>> -----------------------------------------
>>
>> ...................
>> ................................
>> .......................................
>> Sending packet: $z0,ffffffff810ad687,1#66...Ack
>> Packet received: OK
>> target_remove_breakpoint (0x810ad687, xxx) = 0
>> target_terminal_ours ()
>> kgdb_register_io_module (new_kgdb_io_ops=0xffffffff81a9d5b0) at
>> kernel/kgdb.c:1778
>> 1778    }
>> (gdb) n
>> Sending packet: $Z0,ffffffff810ad687,1#46...Ack
>> Packet received: OK
>> target_insert_breakpoint (0x810ad687, xxx) = 0
>> target_terminal_inferior ()
>> Sending packet: $s#73...Ack
>> target_resume (-1, step, 0)
>> Packet received: T05thread:0000000000000001;
>> target_wait (-1, status) = 42000,   status->kind = stopped, signal =
>> SIGTRAP
>> target_thread_architecture (Thread 1) = 0xa2e45c0 [i386:x86-64]
>> Sending packet: $g#67...Ack
>> Packet received:
>> 0000000000000000b0d5a981ffffffffffffffff00000000ffffffff0000000086020000000000004602000000000000b07e0b2f0088ffffa87e0b2f0088ffff000000000000000058f8b081ffffffff507d0b2f0088ffff18b20681ffffffff000000000000000008000000000000000800000000000000b0610300000000005cda0a81ffffffff820300001000000018000000
>> target_fetch_registers (rip) = 5cda0a81ffffffff 0xffffffff810ada5c
>> -2129995172
>> target_stopped_by_watchpoint () = 0
>> target_terminal_inferior ()
>> Sending packet: $s#73...Ack
>> target_resume (-1, step, 0)
>> Packet received: T05thread:0000000000000001;
>> target_wait (-1, status) = 42000,   status->kind = stopped, signal =
>> SIGTRAP
>> target_thread_architecture (Thread 1) = 0xa2e45c0 [i386:x86-64]
>> Sending packet: $g#67...Ack
>> Packet received:
>> 00000000000000000000000000000000ffffffff00000000ffffffff0000000086020000000000004602000000000000b07e0b2f0088ffffb07e0b2f0088ffff000000000000000058f8b081ffffffff507d0b2f0088ffff18b20681ffffffff000000000000000008000000000000000800000000000000b0610300000000005dda0a81ffffffff820300001000000018000000
>> target_fetch_registers (rip) = 5dda0a81ffffffff 0xffffffff810ada5d
>> -2129995171
>> target_stopped_by_watchpoint () = 0
>> target_terminal_inferior ()
>> Sending packet: $s#73...Ack
>> target_resume (-1, step, 0)
>> Packet received: T05thread:0000000000000001;
>> target_wait (-1, status) = 42000,   status->kind = stopped, signal =
>> SIGTRAP
>> target_thread_architecture (Thread 1) = 0xa2e45c0 [i386:x86-64]
>> Sending packet: $g#67...Ack
>> Packet received:
>> 00000000000000000000000000000000ffffffff00000000ffffffff0000000086020000000000004602000000000000c07e0b2f0088ffffb87e0b2f0088ffff000000000000000058f8b081ffffffff507d0b2f0088ffff18b20681ffffffff000000000000000008000000000000000800000000000000b0610300000000005eda0a81ffffffff820300001000000018000000
>> target_fetch_registers (rip) = 5eda0a81ffffffff 0xffffffff810ada5e
>> -2129995170
>> target_stopped_by_watchpoint () = 0
>> target_terminal_inferior ()
>> Sending packet: $s#73...Ack
>> target_resume (-1, step, 0)
>> Packet received: T05thread:0000000000000001;
>> target_wait (-1, status) = 42000,   status->kind = stopped, signal =
>> SIGTRAP
>> target_thread_architecture (Thread 1) = 0xa2e45c0 [i386:x86-64]
>> Sending packet: $g#67...Ack
>> Packet received:
>> 00000000000000000000000000000000ffffffff00000000ffffffff0000000086020000000000004602000000000000c07e0b2f0088ffffc07e0b2f0088ffff000000000000000058f8b081ffffffff507d0b2f0088ffff18b20681ffffffff000000000000000008000000000000000800000000000000b061030000000000180d3e81ffffffff820300001000000018000000
>> target_fetch_registers (rip) = 180d3e81ffffffff 0xffffffff813e0d18
>> -2126639848
>> target_stopped_by_watchpoint () = 0
>> target_terminal_ours_for_output ()
>> Sending packet: $mffffffff813e0d18,1#f8...Ack
>> Packet received: 85
>> remote:target_xfer_partial (2, (null), 0xbfe00edb, 0x0,
>> 0xffffffff813e0d18, 1) = 1, bytes = 85
>> Sending packet: $mffffffff813e0d18,1#f8...Ack
>> Packet received: 85
>> remote:target_xfer_partial (2, (null), 0xbfe00edb, 0x0,
>> 0xffffffff813e0d18, 1) = 1, bytes = 85
>> Sending packet: $mffff88002f0b7ec0,40#be...Ack
>> Packet received:
>> e07e0b2f0088ffff510d3e81ffffffff0800000000000000380d3e81ffffffff107f0b2f0088ffff5fa00081ffffffff107f0b2f0088ffffb0bcb881ffffffff
>> remote:target_xfer_partial (3, (null), 0xa944050, 0x0,
>> 0xffff88002f0b7ec0, 64) = 64, bytes =
>>  e0 7e 0b 2f 00 88 ff ff 51 0d 3e 81 ff ff ff ff ...
>> remote:target_xfer_partial (4, (null), 0xa944030, 0x0,
>> 0xffff88002f0b7ec8, 8) = 8, bytes =
>>  51 0d 3e 81 ff ff ff ff
>> remote:target_xfer_partial (4, (null), 0xa944030, 0x0,
>> 0xffff88002f0b7ec0, 8) = 8, bytes =
>>  e0 7e 0b 2f 00 88 ff ff
>> target_terminal_inferior ()
>> Sending packet: $s#73...Ack
>> target_resume (-1, step, 0)
>> Packet received: T05thread:0000000000000001;
>> target_wait (-1, status) = 42000,   status->kind = stopped, signal =
>> SIGTRAP
>> target_thread_architecture (Thread 1) = 0xa2e45c0 [i386:x86-64]
>> Sending packet: $g#67...Ack
>> Packet received:
>> 00000000000000000000000000000000ffffffff00000000ffffffff0000000086020000000000004602000000000000c07e0b2f0088ffffc07e0b2f0088ffff000000000000000058f8b081ffffffff507d0b2f0088ffff18b20681ffffffff000000000000000008000000000000000800000000000000b0610300000000001a0d3e81ffffffff460300001000000018000000
>> target_fetch_registers (rip) = 1a0d3e81ffffffff 0xffffffff813e0d1a
>> -2126639846
>> target_stopped_by_watchpoint () = 0
>> target_terminal_inferior ()
>> Sending packet: $s#73...Ack
>> target_resume (-1, step, 0)
>> Packet received: T05thread:0000000000000001;
>> target_wait (-1, status) = 42000,   status->kind = stopped, signal =
>> SIGTRAP
>> target_thread_architecture (Thread 1) = 0xa2e45c0 [i386:x86-64]
>> Sending packet: $g#67...Sending packet: $g#67...Sending packet:
>> $g#67...Sending packet: $g#67...Timed out.
>> Timed out.
>> Timed out.
>> Ignoring packet error, continuing...
>> Bad register packet; fetching a new packet
>> Timed out.
>> Timed out.
>> Timed out.
>> Ignoring packet error, continuing...
>> Bad register packet; fetching a new packet
>> Timed out.
>> Timed out.
>> Timed out.
>> Ignoring packet error, continuing...
>> Bad register packet; fetching a new packet
>> Timed out.
>> ..........................
>> .................................
>>
>>
>> Please help me to identify any available patch in kernel.org or any
>> guidance to fix the above error.  I will really appreciate your help
>> on this.
>>
>>
>> -- Thanks and Regards
>> "For things to change, we must change"
>> -Naresh Bhat
>> --
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>
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>
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