Created attachment 27551 [details]
strace output of bzr

Hi!

This happens from inside KVM, and machine to machine.  It is a Denial of service that can happen from user space, when bzr is working over an nfs4 file system.

The kernel wedges, the bzr process is un-killable, and CPU goes to 100%...


MMmmmmmmm..... 

I have attached  an strace of the bzr process,

Here is the output of ver_linux:

$ sh scripts/ver_linux 
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux shalom 2.6.35-amd64-mag+ #1 SMP PREEMPT Sat Aug 21 15:33:32 NZST 2010 x86_64 GNU/Linux
 
Gnu C                  4.4.3
Gnu make               3.81
binutils               2.20.1
util-linux             2.17.2
mount                  support
module-init-tools      3.11.1
e2fsprogs              1.41.11
reiserfsprogs          3.6.21
xfsprogs               3.1.0
pcmciautils            014
Linux C Library        2.11.1
Dynamic linker (ldd)   2.11.1
Procps                 3.2.8
Net-tools              1.60
Kbd                    1.15
Sh-utils               7.4
wireless-tools         30
Modules Loaded         ppdev ip6table_filter ip6_tables iptable_filter ip_tables x_tables kvm_amd kvm rpcsec_gss_krb5 cls_fw sch_cbq sch_gred sch_red sch_sfq ipv6 autofs4 cx88_dvb cx88_vp3054_i2c mt352 s5h1409 dvb_pll videobuf_dvb stb6100 or51132 cx24116 nxt200x isl6421 stb6000 fbcon zl10353 stv0900 cx24123 lgdt330x stv0299 stv0288 tileblit font bitblit fbcon_rotate fbcon_cw fbcon_ud fbcon_ccw softcursor cx22702 snd_hda_codec_atihdmi wm8775 snd_seq_dummy rc_hauppauge_new nfsd snd_hda_codec_realtek exportfs nfs snd_hda_intel lockd snd_hda_codec fscache nfs_acl snd_hwdep cx88_alsa tuner auth_rpcgss snd_seq_oss snd_seq_midi tea5767 arc4 ecb tda8290 radeon snd_pcm_oss snd_rawmidi sunrpc tda827x tuner_xc2028 xc5000 tda9887 tuner_simple tuner_types ath9k mt20xx it87 ath9k_common snd_mixer_oss ath9k_hw hwmon_vid ttm tea5761 snd_seq_midi_event snd_pcm ath snd_seq drm_kms_helper dummy drm ir_sony_decoder cx8802 mac80211 ir_jvc_decoder cx8800 ir_rc6_decoder ir_rc5_decoder cx88xx ir_nec_decoder saa7164 v4l2_common cfg80211 dvb_core videodev tda18271 ir_common ir_core v4l1_compat s5h1411 tda10048 v4l2_compat_ioctl32 rtc_cmos lp rtc_core fb btcx_risc parport videobuf_dma_sg tveeprom videobuf_core fbdev i2c_algo_bit i2c_piix4 rtc_lib snd_timer cfbcopyarea rfkill snd_seq_device cfbimgblt snd soundcore wmi cfbfillrect serio_raw joydev led_class snd_page_alloc hid_logitech usbhid ohci1394 ieee1394 sg e1000e sr_mod cdrom r8169 usb_storage

shalom: -grantma- [~/src/linux/linux-2.6.35]