Bug 457326 - ssh quits with "xmalloc: zero size"
ssh quits with "xmalloc: zero size"
Status: CLOSED RAWHIDE
Product: Fedora
Classification: Fedora
Component: openssh (Show other bugs)
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x86_64 Linux
low Severity low
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Assigned To: Tomas Mraz
Fedora Extras Quality Assurance
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2008-07-30 18:41 EDT by Pete Zaitcev
Modified: 2008-08-01 12:37 EDT (History)
0 users

See Also:
Fixed In Version: openssh-5.1p1-2.fc10
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2008-07-31 06:46:09 EDT
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Regression: ---
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RHEL 7.3 requirements from Atomic Host:


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Description Pete Zaitcev 2008-07-30 18:41:03 EDT
Description of problem:

The following happens:

[zaitcev@niphredil ~]$ ssh devserv.devel.redhat.com
xmalloc: zero size
[zaitcev@niphredil ~]$ 

This started happening after the update on July 26.

Version-Release number of selected component (if applicable):

openssh-5.1p1-1.fc10.x86_64
openssl-0.9.8g-10.fc10.x86_64
glibc-2.8.90-9.x86_64

How reproducible:

100%

Steps to Reproduce:
1. ssh devserv.devel.redhat.com
2. Observe the fault
  
Actual results:

ssh quits (with a message)

Expected results:

Established connection

Additional info:

- This ONLY happens with devserv. Porkchop works! All my home boxes
  are ok too.

- This is NOT a fault of ssh. I tried different binaries, they all
  fail in the same way. But I do not know how to identify the component.
Comment 1 Pete Zaitcev 2008-07-30 18:44:06 EDT
[zaitcev@niphredil ~]$ ssh -v devserv.devel.redhat.com
OpenSSH_5.1p1, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to devserv.devel.redhat.com [10.10.36.72] port 22.
debug1: Connection established.
debug1: identity file /q/zaitcev/.ssh/identity type -1
debug1: identity file /q/zaitcev/.ssh/id_rsa type -1
debug1: identity file /q/zaitcev/.ssh/id_dsa type 2
debug1: Remote protocol version 1.99, remote software version OpenSSH_3.6.1p2
debug1: match: OpenSSH_3.6.1p2 pat OpenSSH_3.*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'devserv.devel.redhat.com' is known and matches the RSA host key.
debug1: Found key in /q/zaitcev/.ssh/known_hosts:29
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
xmalloc: zero size
[zaitcev@niphredil ~]$ 
Comment 2 Pete Zaitcev 2008-07-30 18:56:15 EDT
Actually, I take it back. It may be ssh itself, I just don't know.
Comment 3 Pete Zaitcev 2008-07-30 18:57:48 EDT
In fact, it definitely is ssh. I installed openssh-5.0p1-3.fc10.x86_64,
and it works.
Comment 4 Tomas Mraz 2008-07-31 04:09:30 EDT
Yes, there is a bug in input_userauth_banner function.
Comment 5 Pete Zaitcev 2008-08-01 12:37:03 EDT
Confirmed fixed in 5.1p1-2.fc10.

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