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Re: Program goes into infinite state.

From: Yuvi yuvi <testandroidos51_at_gmail.com>
Date: Mon, 23 Apr 2012 16:47:07 +0530

Hi,

Following is the log taken using curl binary file :

root_at_dm37x-evm:/# ./curl -u root:LinuxDev_ -v -O sftp://
192.168.10.1/mnt/package.QuipC

* About to connect() to 192.168.10.1 port 22 (#0)

* Trying 192.168.10.1...

  % Total % Received % Xferd Average Speed Time Time Time
Current

                                 Dload Upload Total Spent Left
Speed

  0 0 0 0 0 0 0 0 --:--:-- --:--:--
--:--:-- 0* connected

* Connected to 192.168.10.1 (192.168.10.1) port 22 (#0)

* SFTP 0x2d2888 state change from SSH_STOP to SSH_INIT

* SFTP 0x2d2888 state change from SSH_INIT to SSH_S_STARTUP

  0 0 0 0 0 0 0 0 --:--:-- --:--:--
--:--:-- 0* SFTP 0x2d2888 state change from SSH_S_STARTUP to SSH_HOSTKEY

* SSH MD5 fingerprint: 0c7d6453b72e8862637a2abcf76ccf95

* SSH host check: 0, key:
AAAAB3NzaC1yc2EAAAADAQABAAAAgwDNhToi7hEZP5Fm3LKaAxyBx75GCYUeuU4iX9B+yvj+cBUxw0lV8CD+XR77jPWpgMbJPnk0ROJmch4zwj7E98q0VwukPUxFbTL6dC4W7DC3hzqlRPMlIsfiNMdt7bJ6zk14RKL25yKeiPYE6TbCJF8niWkaPIRW52j7LoSbX/zmFEyb

* SFTP 0x2d2888 state change from SSH_HOSTKEY to SSH_AUTHLIST

* SSH authentication methods available: publickey,password

* SFTP 0x2d2888 state change from SSH_AUTHLIST to SSH_AUTH_PKEY_INIT

* Using ssh public key file /home/root/.ssh/id_dsa.pub

* Using ssh private key file /home/root/.ssh/id_dsa

* SFTP 0x2d2888 state change from SSH_AUTH_PKEY_INIT to SSH_AUTH_PKEY

* SSH public key authentication failed: Unable to open public key file

* SFTP 0x2d2888 state change from SSH_AUTH_PKEY to SSH_AUTH_PASS_INIT

* SFTP 0x2d2888 state change from SSH_AUTH_PASS_INIT to SSH_AUTH_PASS

* Initialized password authentication

* SFTP 0x2d2888 state change from SSH_AUTH_PASS to SSH_AUTH_DONE

* Authentication complete
  0 0 0 0 0 0 0 0 --:--:-- 0:01:39
--:--:-- 0

After this " 0 0 0 0 0 0 0 0 --:--:-- 0:01:39
--:--:-- 0"
nothing happens I have to manually abort execution using Ctrl + c, and even
no core dump is generated.
Please let me know if there is any work around for this situation.

On Wed, Apr 18, 2012 at 1:42 PM, Yuvi yuvi <testandroidos51_at_gmail.com>wrote:

> Hi,
>
> Yes the program goes into the infinite loop, Following is the log, which I
> have taken using *strace* command, core dump is not able to show anything.
> I think there is an internal retry counter, can we set that counter value
> by anyhow? please suggest me any solution.
>
> open("/dev/urandom", O_RDONLY|O_NONBLOCK|O_NOCTTY) = 4
>
> fstat64(4, {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 9), ...}) = 0
>
> poll([{fd=4, events=POLLIN, revents=POLLIN}], 1, 10) = 1
>
> read(4, "n9\314l\270+\3066\33\366T\3657\262\322<\231\373\\\22\177"..., 32)
> = 32
>
> close(4) = 0
>
> getuid32() = 0
>
> gettimeofday({1301020875, 599243}, NULL) = 0
>
> SYS_289(0x3, 0x293aa8, 0x288, 0x4000, 0x28f950) = 648
>
> gettimeofday({1301020875, 600494}, NULL) = 0
>
> SYS_291(0x3, 0x28fa80, 0x4000, 0x4000, 0x28f950) = 416
>
> gettimeofday({1301020875, 600799}, NULL) = 0
>
> SYS_289(0x3, 0x293aa8, 0x90, 0x4000, 0x28f950) = 144
>
> gettimeofday({1301020875, 628418}, NULL) = 0
>
> SYS_291(0x3, 0x28fa80, 0x4000, 0x4000, 0x28f950) = -1 EAGAIN (Resource
> temporarily unavailable)
>
> timer_delete(0x1) = 0
>
> timer_delete(0x1) = 0
>
> timer_delete(0x1) = 0
>
> timer_delete(0x1) = 0
>
> poll([{fd=3, events=POLLIN|POLLPRI, revents=POLLIN}], 1, 1000) = 1
>
> gettimeofday({1301020876, 106384}, NULL) = 0
>
> SYS_291(0x3, 0x28fa80, 0x4000, 0x4000, 0x28f950) = 464
>
> SYS_289(0x3, 0x293aa8, 0x10, 0x4000, 0x28f950) = 16
>
> gettimeofday({1301020876, 149292}, NULL) = 0
>
> SYS_289(0x3, 0x293aa8, 0x34, 0x4000, 0x28f950) = 52
>
> gettimeofday({1301020876, 150085}, NULL) = 0
> SYS_291(0x3, 0x28fa80, 0x4000, 0x4000, 0x28f950) = -1 EAGAIN (Resource
> temporarily unavailable)
>
>
>>
>> > Hi,
>> >
>> > I have wifi DD-WRT router that has USB Storage support.
>> > I have configured that router to support SFTP protocol.
>> > My problem is that during downloading if somebody removed the USB
>> storage
>> > then my sample program to download file goes into the infinite state.
>>
>> what is an infinite state? do you mean an infinete loop?
>>
>> I suggest you to try to run your program in a linux box. Configure your
>> shell so as to produce core dumps. then run the program, remove USB storage
>> to cause infinite loop. Kill your program with ctrl-c. Core will be dumped,
>> then you are ready to go with launching gdb and telling us what is wrong.
>> Probably it is nothing but a pourly written router SW.
>>
>> If the text above does not mean something to you, I do not know how you
>> can solve this problem w/o hiring someone to do it for you.
>>
>> Thanks
>>
>>
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Mon, 16 Apr 2012 22:47:49 +0200 (CEST)
>> From: Daniel Stenberg <daniel_at_haxx.se>
>> To: the curl tool <curl-users_at_cool.haxx.se>
>> Subject: Re: SFTP : Problem with special character # on target file
>> Message-ID: <alpine.DEB.2.00.1204162247010.15394_at_tvnag.unkk.fr>
>> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
>>
>>
>>
>
>

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Received on 2012-04-23