Bug 25426
| Summary: | Segmentation fault in openssh (64-bits) | ||||||
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| Product: | [Retired] Red Hat Linux | Reporter: | Michal Jaegermann <michal> | ||||
| Component: | openssh | Assignee: | Nalin Dahyabhai <nalin> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | |||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 7.3 | ||||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | alpha | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2001-02-02 17:37:09 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Created attachment 8617 [details]
tar.gz archive with patches for openssh
Per email:
> in comments on bugzilla I properly identified a problem with
> /etc/pam.d/sshd on 6.x system but later in spec diffs in attached
> archive I used just the wrong file. Ooops! Sorry. Make a note.
|
I dislike very much that kind of a bug report but, I am afraid, I do not have anything better. It also touches not in testing yet Alpha but it may affect all 64-bit platforms. On my Alpha ssh (openssh-2.3.0p1) suddenly started misbehave after a long time when it worked without problems. I am not aware of any changes which could affect it with a possible exception of date. I may miss something. Debugging output from an attempted connection from a stricken machine to itself looked like that: SSH Version OpenSSH_2.3.0p1, protocol versions 1.5/2.0. Compiled with SSL (0x0090600f). debug: Reading configuration data /etc/ssh/ssh_config debug: Applying options for * debug: Seeding random number generator debug: ssh_connect: getuid 0 geteuid 0 anon 0 debug: Connecting to toaster [192.168.23.5] port 22. debug: Seeding random number generator debug: Allocated local port 629. debug: Connection established. debug: Remote protocol version 1.99, remote software version OpenSSH_2.3.0p1 debug: no match: OpenSSH_2.3.0p1 Enabling compatibility mode for protocol 2.0 debug: Local version string SSH-2.0-OpenSSH_2.3.0p1 debug: send KEXINIT debug: done debug: wait KEXINIT debug: got kexinit: diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1 debug: got kexinit: ssh-dss debug: got kexinit: 3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes128-cbc,aes192-cbc,aes256-cbc,rijndael128-cbc,rijndael192-cbc,rijndael256-cbc,rijndael-cbc.se debug: got kexinit: 3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes128-cbc,aes192-cbc,aes256-cbc,rijndael128-cbc,rijndael192-cbc,rijndael256-cbc,rijndael-cbc.se debug: got kexinit: hmac-sha1,hmac-md5,hmac-ripemd160 debug: got kexinit: hmac-sha1,hmac-md5,hmac-ripemd160 debug: got kexinit: none,zlib debug: got kexinit: none,zlib debug: got kexinit: debug: got kexinit: debug: first kex follow: 0 debug: reserved: 0 debug: done debug: kex: server->client 3des-cbc hmac-sha1 none debug: kex: client->server 3des-cbc hmac-sha1 none debug: Sending SSH2_MSG_KEX_DH_GEX_REQUEST. debug: Wait SSH2_MSG_KEX_DH_GEX_GROUP. debug: Got SSH2_MSG_KEX_DH_GEX_GROUP. debug: bits set: 989/2049 debug: Sending SSH2_MSG_KEX_DH_GEX_INIT. debug: Wait SSH2_MSG_KEX_DH_GEX_REPLY. debug: Got SSH2_MSG_KEXDH_REPLY. debug: Host 'toaster' is known and matches the DSA host key. debug: bits set: 1035/2049 debug: len 55 datafellows 0 debug: dsa_verify: signature correct Segmentation fault From other machines, also x86, I can see only "remote closed connection". In an attempt to find reasons I cleaned up, eventually, all function interfaces adding all needed prototypes. After recompilation of modified sources things started to work again both locally and remotely and I still do not know what was precisely the problem (not for the lack of trying). I attach my patches, relative to openssh-2.3.0p1-9 from "Fisher". Also spec file for this version is using 'sshd.pam.6x' for /etc/pam.d/sshd if %{build6x} macro is defined. With this file I was unable to login via ssh to release 6.2 (Zoot) system with pam-0.72-20.6.x but I do not have any problems when a patched file from contrib/redhat/sshd.pam was used instead (the same one as for 7.x releases). Michal michal