(ESshFatal) Out of memory. All channels closed :: Support Forum

Dorent
Joined:: 2020-03-16
Posts:: 1
Location:: Russian Federation, Vladimir

(ESshFatal) Out of memory. All channels closed

2020-03-16 07:23

Hello!
We use automatic file transfer to a remote SFTP server using WinSCP 5.17.2 and a bat file.
Transfer occurs at night and large files (from 200 megabytes to 25 gigabytes).

Often we see error Out of memory and session closure:

* 2020-03-15 01: 59: 24.988 (ESshFatal) Out of memory
> 2020-03-15 01: 59: 24.988 Type: SSH_FXP_CLOSE, Size: 25, Number: 194979844
<2020-03-15 01: 59: 25.081 Type: SSH_FXP_STATUS, Size: 24, Number: 194979844
<2020-03-15 01: 59: 25.081 Status code: 0
. 2020-03-15 01: 59: 25.097 Closing connection.
. 2020-03-15 01: 59: 25.097 Sending special code: 1
. 2020-03-15 01: 59: 25.191 Session sent command exit status 0
. 2020-03-15 01: 59: 25.191 Main session channel closed
. 2020-03-15 01: 59: 25.191 All channels closed

The full log and bat file were attached in private mode.

backup511_hetzner.cmd (1.45 KB, Private file)

sftp_winscp.log (3.32 MB, Private file)

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 41,440
Location:: Prague, Czechia

Re: (ESshFatal) Out of memory. All channels closed

2020-03-17

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

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74gee
Joined:: 2021-06-19
Posts:: 2
Location:: Philippines

Same problem occurring here with multiple servers.

2021-06-19 18:44

This is occurring on 4 servers in multiple geographic locations.
Running WinSCP 5.19 on Windows 10.0.19042.928

Any help very much appreciated,

6th line from the end of the log.

. 2021-06-20 01:34:46.928 Server offered these authentication methods: publickey
. 2021-06-20 01:34:46.928 Offered public key
. 2021-06-20 01:34:47.206 Detected network event
. 2021-06-20 01:34:47.206 Enumerating network events for socket 2960
. 2021-06-20 01:34:47.206 Enumerated 1 network events making 1 cumulative events for socket 2960
. 2021-06-20 01:34:47.206 Handling network read event on socket 2960 with error 0
. 2021-06-20 01:34:47.206 Waiting for the server to continue with the initialization
. 2021-06-20 01:34:47.206 Looking for incoming data
. 2021-06-20 01:34:47.206 Looking for network events
. 2021-06-20 01:34:47.206 Offer of public key accepted
! 2021-06-20 01:34:47.206 Authenticating with public key "xxxxxxx"
. 2021-06-20 01:34:50.084 Attempt to close connection due to fatal exception:
* 2021-06-20 01:34:50.084 Authentication log (see session log for details):
* 2021-06-20 01:34:50.084 Using username "root".
* 2021-06-20 01:34:50.084 Authenticating with public key "xxxxxxx".
* 2021-06-20 01:34:50.084 (ESshFatal) Out of memory
. 2021-06-20 01:34:50.084 Closing connection.
. 2021-06-20 01:34:50.085 Selecting events 0 for socket 2960
* 2021-06-20 01:34:50.132 (EFatal) Out of memory
* 2021-06-20 01:34:50.132 Authentication log (see session log for details):
* 2021-06-20 01:34:50.133 Using username "root".
* 2021-06-20 01:34:50.133 Authenticating with public key "xxxxxxx".
* 2021-06-20 01:34:50.133 
* 2021-06-20 01:34:50.133 Authentication failed.

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goldfingeroo7
Joined:: 2021-06-21
Posts:: 1

Having this same issue.

2021-06-21 17:15

WinSCP 5.19 (Build 11512)
Windows 10 Pro 21H1
OS Build 19043.1055

! 2021-06-21 11:07:31.481 Authenticating with public key ""
. 2021-06-21 11:07:33.034 Attempt to close connection due to fatal exception:
* 2021-06-21 11:07:33.034 Authentication log (see session log for details):
* 2021-06-21 11:07:33.034 Authorized uses only. All activity may be monitored and reported.
* 2021-06-21 11:07:33.034 Authenticating with public key "".
* 2021-06-21 11:07:33.034 (ESshFatal) Out of memory
. 2021-06-21 11:07:33.034 Closing connection.
. 2021-06-21 11:07:33.034 Selecting events 0 for socket 2488
* 2021-06-21 11:07:33.087 (EFatal) Out of memory
* 2021-06-21 11:07:33.087 Authentication log (see session log for details):
* 2021-06-21 11:07:33.087 Authorized uses only. All activity may be monitored and reported.
* 2021-06-21 11:07:33.087 Authenticating with public key "".
* 2021-06-21 11:07:33.087 
* 2021-06-21 11:07:33.087 Authentication failed.

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74gee
Joined:: 2021-06-19
Posts:: 2
Location:: Philippines

2021-06-22 07:01

I spent a while testing this, I realised there was nothing wrong with the servers as I can connect with PuTTY ok.
I believe it's a problem with WinSCP. Once I downloaded and installed WinSCP 5.17.10 the problem disappeared.

https://sourceforge.net/projects/winscp/files/WinSCP/5.17.10/

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