[Bug 535156] [NEW] ssh connection freezes

[Robert]

Public bug reported:

1)
Description:	Ubuntu 9.10
Release:	9.10

2)
openssh-client:
  Installiert: 1:5.1p1-6ubuntu2
  Kandidat: 1:5.1p1-6ubuntu2
  Versions-Tabelle:
 *** 1:5.1p1-6ubuntu2 0
        500 http://de.archive.ubuntu.com karmic/main Packages
        100 /var/lib/dpkg/status
3)
Nothing ;-) 
ssh shouldn't stop working.
4)
ssh connection freezes. Extract from kern.log:

Mar  9 16:49:58 c64 kernel: [22944.432793] WARNING: at /build/buildd/linux-2.6.31/net/ipv4/tcp.c:1408 tcp_recvmsg+0xa49/0xb20()
Mar  9 16:49:58 c64 kernel: [22944.432800] Hardware name: X51H
Mar  9 16:49:58 c64 kernel: [22944.432805] Modules linked in: usbhid aes_i586 aes_generic binfmt_misc ppdev snd_hda_codec_si3054 snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm arc4 snd_seq_dummy snd_seq_oss joydev snd_seq_midi ecb snd_rawmidi snd_seq_midi_event iptable_filter ip_tables snd_seq snd_timer ath5k pcmcia psmouse snd_seq_device mac80211 ath sdhci_pci x_tables lp yenta_socket rsrc_nonstatic pcmcia_core sdhci asus_laptop cfg80211 parport serio_raw led_class snd soundcore snd_page_alloc fbcon tileblit font bitblit softcursor 8139too 8139cp mii i915 drm i2c_algo_bit intel_agp agpgart video output
Mar  9 16:49:58 c64 kernel: [22944.432913] Pid: 5918, comm: ssh Tainted: G        W  2.6.31-20-generic #57-Ubuntu
Mar  9 16:49:58 c64 kernel: [22944.432919] Call Trace:
Mar  9 16:49:58 c64 kernel: [22944.432925]  [<c01450ad>] warn_slowpath_common+0x6d/0xa0
Mar  9 16:49:58 c64 kernel: [22944.432933]  [<c04d2659>] ? tcp_recvmsg+0xa49/0xb20
Mar  9 16:49:58 c64 kernel: [22944.432939]  [<c04d2659>] ? tcp_recvmsg+0xa49/0xb20
Mar  9 16:49:58 c64 kernel: [22944.432946]  [<c01450f5>] warn_slowpath_null+0x15/0x20
Mar  9 16:49:58 c64 kernel: [22944.432953]  [<c04d2659>] tcp_recvmsg+0xa49/0xb20
Mar  9 16:49:58 c64 kernel: [22944.432960]  [<c0492653>] sock_common_recvmsg+0x43/0x60
Mar  9 16:49:58 c64 kernel: [22944.432967]  [<c04922cc>] sock_aio_read+0x11c/0x130
Mar  9 16:49:58 c64 kernel: [22944.432974]  [<c0573fd8>] ? _spin_lock+0x8/0x10
Mar  9 16:49:58 c64 kernel: [22944.432981]  [<c01e7b1c>] do_sync_read+0xbc/0x100
Mar  9 16:49:58 c64 kernel: [22944.432988]  [<c015c180>] ? autoremove_wake_function+0x0/0x40
Mar  9 16:49:58 c64 kernel: [22944.433021]  [<c02cbd9f>] ? security_file_permission+0xf/0x20
Mar  9 16:49:58 c64 kernel: [22944.433028]  [<c01e7bbf>] ? rw_verify_area+0x5f/0xe0
Mar  9 16:49:58 c64 kernel: [22944.433034]  [<c01cc5c0>] ? handle_mm_fault+0x330/0x380
Mar  9 16:49:58 c64 kernel: [22944.433041]  [<c01e81fa>] vfs_read+0x17a/0x190
Mar  9 16:49:58 c64 kernel: [22944.433047]  [<c01e872d>] sys_read+0x3d/0x70
Mar  9 16:49:58 c64 kernel: [22944.433053]  [<c01033ac>] syscall_call+0x7/0xb
Mar  9 16:49:58 c64 kernel: [22944.433059] ---[ end trace d0d1fb602da57778 ]---

ProblemType: Bug
Architecture: i386
Date: Tue Mar  9 17:29:02 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Debian GNU/Linux 5.0 r0 "Lenny" - Official Snapshot i386 LIVE/INSTALL Binary 20091124-21:19
Package: openssh-client 1:5.1p1-6ubuntu2
ProcEnviron:
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-20.57-generic
SourcePackage: openssh
Uname: Linux 2.6.31-20-generic i686

** Affects: openssh (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

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ssh connection freezes
https://bugs.launchpad.net/bugs/535156
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