After restarting nmbd (with rcnmb restart) ksoftirq leads up to 100% cpu utilization. This problem is reproducable on several s390 systems with samba3- 3.0.0, samba3-3.0.2 and samba3-3.0.5. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 7 root 39 19 0 0 0 R 99.9 0.0 18:49.12 ksoftirqd_CPU0 The only way i know to solve the problem is reboot. Most time the problem is reproducable after one restart, sometimes the problem exists after reboot and sometimes it is possible to restart nmbd 5 times without having a problem. Test-Environment: System: SuSE SLES-8 (S/390) VERSION = 8.1 3 CPU Kernel: Linux deidshostz0012 2.4.21-83-default #1 SMP Fri Oct 31 00:38:02 UTC 2003 s390 unknown Samba: samba3-client-3.0.5-8.1 samba3-winbind-3.0.5-8.1 samba3-3.0.5-8.1 samba3-doc-3.0.5-8.1 libsmbclient-3.0.5-8.1 libsmbclient-devel-3.0.5-8.1 smb.conf: [global] idmap uid = 10000-30000 idmap gid = 10000-30000 case sensitive = yes workgroup = karlsruher netbios name = DEIDSHOSTZ0012 security = ADS realm = KARLSRUHER.DE password server = * encrypt passwords = yes name resolve order = wins bcast server string = Samba Fileserver wins server = 10.1.2.19 10.13.3.26 unix extensions = Yes map archive = no map hidden = no map system =no [u123112] path = /samba/user/u123112 public = yes browseable = yes read only = no create mask = 0664 directory mask = 0775 Network: dummy0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:10.2.102.21 Bcast:10.2.255.255 Mask:255.255.255.252 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:1001 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:90158 (88.0 Kb) eth0 Link encap:Ethernet HWaddr 00:09:6B:F6:21:59 inet addr:10.2.2.32 Bcast:10.2.2.255 Mask:255.255.255.0 inet6 addr: fe80::9:6b00:3af6:2159/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:19578 errors:0 dropped:0 overruns:0 frame:0 TX packets:1007 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:9309110 (8.8 Mb) TX bytes:151815 (148.2 Kb) Interrupt:5 eth1 Link encap:Ethernet HWaddr 00:09:6B:F6:1E:F5 inet addr:10.2.4.32 Bcast:10.2.4.255 Mask:255.255.255.0 inet6 addr: fe80::9:6b00:3af6:1ef5/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:10743 errors:0 dropped:0 overruns:0 frame:0 TX packets:3149 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:1230176 (1.1 Mb) TX bytes:369839 (361.1 Kb) Interrupt:8 hsi1 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:10.200.10.212 Mask:255.255.255.0 inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link UP RUNNING NOARP MULTICAST MTU:16384 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:145 errors:133 dropped:133 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:23682 (23.1 Kb) Interrupt:14 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1314 errors:0 dropped:0 overruns:0 frame:0 TX packets:1314 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:151986 (148.4 Kb) TX bytes:151986 (148.4 Kb) tr0 Link encap:16/4 Mbps Token Ring HWaddr 40:00:7F:FF:00:06 inet addr:10.1.1.212 Bcast:10.1.255.255 Mask:255.255.0.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:11748 errors:0 dropped:0 overruns:0 frame:0 TX packets:6362 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:1728680 (1.6 Mb) TX bytes:2244198 (2.1 Mb) Interrupt:11 filesystem: /dev/dasdk1 on / type reiserfs (rw) proc on /proc type proc (rw) devpts on /dev/pts type devpts (rw,mode=0620,gid=5) /dev/klv_vg/home_lv on /home type reiserfs (rw) /dev/klv_vg/opt_lv on /opt type reiserfs (rw) /dev/klv_vg/tmp_lv on /tmp type reiserfs (rw) /dev/klv_vg/usr_lv on /usr type reiserfs (rw) /dev/klv_vg/var_lv on /var type reiserfs (rw) /dev/samba_vg/samba_project_lv on /samba/project type reiserfs (rw,acl,usrquota,grpquota) /dev/samba_vg/samba_user_lv on /samba/user type reiserfs (rw,acl,usrquota,grpquota) /dev/samba_vg/samba_buero_lv on /samba/buero type reiserfs (rw,acl,usrquota,grpquota) shmfs on /dev/shm type shm (rw) The problem is reproducable with ext3 filesystem, too.
s390 ? Jim ?
I think this should be reported to SuSE. Samba shouldn't be able to cause this. Adding Lars to cc:
As Jim suggested: Please contact the SuSE support department and provide as detailed as possible information about the microcode and patch level of your S390 system. I suggest to close this bug as from my point of view this is a hardware or kernel driver problem only triggered by Samba.
closing this bug since it will be escalated through SuSE.