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Date: Thu, 02 Dec 2010 21:40:35 -0500 From: Doug Hughes <doug@...l.to> To: linux-kernel@...r.kernel.org Subject: strange linux kernel NFS problem(s) So, this is my first post, but not my first problem of this nature. It just so happens that this is the first one with a recent kernel to give useful data, useful enough to post it and seek some advice on the subject: symptoms: machine gets high load, nfs mount processes hang, and things (particularly NFS) stop working. ssh and ip connectivity still works, as does ps. *general protection fault: 0000 [#1] SMP last sysfs file: /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map CPU 1 Modules linked in: nfs auth_rpcgss autofs4 i2c_dev i2c_core lockd sunrpc cachefiles fscache ipmi_si ipmi_devintf ipmi_msghandler ip6t_REJECT xt_tcpudp ip6table_filter ip6_tables x_tables ipv6 video output battery ac parport_pc lp parport joydev button sr_mod pcspkr iTCO_wdt shpchp dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod usb_storage pata_acpi ata_piix ata_generic libata uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode] Pid: 28573, comm: python2.5 Not tainted 2.6.34 #3 X7DWT/X7DWT RIP: 0010:[<ffffffffa0292cdb>] [<ffffffffa0292cdb>] nfs_release+0x64/0x94 [nfs] RSP: 0018:ffff88041ccb9d58 EFLAGS: 00010246 RAX: ffff88041c47d160 RBX: ffff88041c47d1e8 RCX: ff88041c47d16088 RDX: ffff88042c593288 RSI: ffff88042c504e40 RDI: ffff88041c47d294 RBP: ffff88041ccb9d78 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000300000000 R11: 0000000000000000 R12: ffff88042c593240 R13: ffff88042c504e40 R14: ffff88041ea59ec0 R15: ffff8804273f55c0 FS: 0000000000000000(0000) GS:ffff880001840000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000003fd5c03350 CR3: 0000000001613000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process python2.5 (pid: 28573, threadinfo ffff88041ccb8000, task ffff8803e246adf0) Stack: 0000000300000000 ffff88042c504e40 ffff88041c47d1e8 ffff88041c47d1e8 <0> ffff88041ccb9d98 ffffffffa0290fc5 0000000000000010 ffff88042c504e40 <0> ffff88041ccb9dd8 ffffffff810a75b7 ffff88042caf3120 ffff88042c687768 Call Trace: [<ffffffffa0290fc5>] nfs_file_release+0x5c/0x61 [nfs] [<ffffffff810a75b7>] __fput+0xf6/0x1bf [<ffffffff810a78ba>] fput+0x15/0x17 [<ffffffff8108ccff>] remove_vma+0x36/0x6c [<ffffffff8108ce54>] exit_mmap+0x11f/0x141 [<ffffffff81030119>] mmput+0x2d/0xc3 [<ffffffff81033e9f>] exit_mm+0x10b/0x118 [<ffffffff81064b75>] ? audit_free+0x191/0x1c4 [<ffffffff81035074>] do_exit+0x200/0x685 [<ffffffff81035567>] do_group_exit+0x6e/0x98 [<ffffffff810355a3>] sys_exit_group+0x12/0x16 [<ffffffff81001eab>] system_call_fastpath+0x16/0x1b Code: 11 e1 49 8d 54 24 48 49 8b 4c 24 48 48 8b 42 08 48 89 41 08 48 89 08 48 8d 83 78 ff ff ff 48 8b 48 08 49 89 44 24 48 48 89 50 08 <48> 89 11 48 89 4a 08 fe 83 ac 00 00 00 41 8b 75 38 4c 89 e7 81 RIP [<ffffffffa0292cdb>] nfs_release+0x64/0x94 [nfs] RSP <ffff88041ccb9d58> ---[ end trace 1ac7372e162481b8 ]--- Fixing recursive fault but reboot is needed! mount: server antonrootfs.d.stor.en.desres.deshaw.com not responding, timed out [root@...onfe0002 ~]# uptime 20:58:04 up 12 days, 1:05, 4 users, load average: 20.98, 20.23, 18.99 * UID PID PPID C STIME TTY TIME CMD root 1 0 0 Nov20 ? 00:00:04 init [3] root 2 0 0 Nov20 ? 00:00:00 [kthreadd] root 3 2 0 Nov20 ? 00:00:00 [migration/0] root 4 2 0 Nov20 ? 02:42:37 [ksoftirqd/0] root 5 2 0 Nov20 ? 00:00:00 [migration/1] root 6 2 3 Nov20 ? 10:04:25 [ksoftirqd/1] root 7 2 0 Nov20 ? 00:00:00 [migration/2] root 8 2 0 Nov20 ? 01:39:58 [ksoftirqd/2] root 9 2 0 Nov20 ? 00:00:00 [migration/3] root 10 2 4 Nov20 ? 13:28:17 [ksoftirqd/3] root 11 2 0 Nov20 ? 00:00:00 [migration/4] root 12 2 7 Nov20 ? 20:39:20 [ksoftirqd/4] root 13 2 0 Nov20 ? 00:00:00 [migration/5] root 14 2 0 Nov20 ? 00:06:39 [ksoftirqd/5] root 15 2 0 Nov20 ? 00:00:00 [migration/6] root 16 2 7 Nov20 ? 21:56:03 [ksoftirqd/6] root 17 2 0 Nov20 ? 00:00:00 [migration/7] root 18 2 1 Nov20 ? 03:06:59 [ksoftirqd/7] root 19 2 0 Nov20 ? 00:00:06 [events/0] root 20 2 0 Nov20 ? 00:00:22 [events/1] root 21 2 0 Nov20 ? 00:00:09 [events/2] root 22 2 0 Nov20 ? 00:00:08 [events/3] root 23 2 0 Nov20 ? 00:00:05 [events/4] root 24 2 0 Nov20 ? 00:00:33 [events/5] root 25 2 0 Nov20 ? 00:00:07 [events/6] root 26 2 0 Nov20 ? 00:00:12 [events/7] root 27 2 0 Nov20 ? 00:00:00 [khelper] root 32 2 0 Nov20 ? 00:00:00 [async/mgr] root 175 2 0 Nov20 ? 00:00:00 [sync_supers] root 177 2 0 Nov20 ? 00:00:00 [bdi-default] root 178 2 0 Nov20 ? 00:00:00 [kintegrityd/0] root 179 2 0 Nov20 ? 00:00:00 [kintegrityd/1] root 180 2 0 Nov20 ? 00:00:00 [kintegrityd/2] root 181 2 0 Nov20 ? 00:00:00 [kintegrityd/3] root 182 2 0 Nov20 ? 00:00:00 [kintegrityd/4] root 183 2 0 Nov20 ? 00:00:00 [kintegrityd/5] root 184 2 0 Nov20 ? 00:00:00 [kintegrityd/6] root 185 2 0 Nov20 ? 00:00:00 [kintegrityd/7] root 186 2 0 Nov20 ? 00:00:00 [kblockd/0] root 187 2 0 Nov20 ? 00:00:00 [kblockd/1] root 188 2 0 Nov20 ? 00:00:00 [kblockd/2] root 189 2 0 Nov20 ? 00:00:00 [kblockd/3] root 190 2 0 Nov20 ? 00:00:00 [kblockd/4] root 191 2 0 Nov20 ? 00:00:00 [kblockd/5] root 192 2 0 Nov20 ? 00:00:00 [kblockd/6] root 193 2 0 Nov20 ? 00:00:00 [kblockd/7] root 195 2 0 Nov20 ? 00:00:00 [kacpid] root 196 2 0 Nov20 ? 00:00:00 [kacpi_notify] root 197 2 0 Nov20 ? 00:00:00 [kacpi_hotplug] root 304 2 0 Nov20 ? 00:00:00 [khubd] root 307 2 0 Nov20 ? 00:00:00 [kseriod] root 416 2 0 Nov20 ? 00:00:00 [kswapd0] root 417 2 0 Nov20 ? 00:00:00 [aio/0] root 418 2 0 Nov20 ? 00:00:00 [aio/1] root 419 2 0 Nov20 ? 00:00:00 [aio/2] root 420 2 0 Nov20 ? 00:00:00 [aio/3] root 421 2 0 Nov20 ? 00:00:00 [aio/4] root 422 2 0 Nov20 ? 00:00:00 [aio/5] root 423 2 0 Nov20 ? 00:00:00 [aio/6] root 424 2 0 Nov20 ? 00:00:00 [aio/7] root 426 2 0 Nov20 ? 00:00:00 [crypto/0] root 427 2 0 Nov20 ? 00:00:00 [crypto/1] root 428 2 0 Nov20 ? 00:00:00 [crypto/2] root 429 2 0 Nov20 ? 00:00:00 [crypto/3] root 430 2 0 Nov20 ? 00:00:00 [crypto/4] root 431 2 0 Nov20 ? 00:00:00 [crypto/5] root 432 2 0 Nov20 ? 00:00:00 [crypto/6] root 433 2 0 Nov20 ? 00:00:00 [crypto/7] root 635 2 0 Nov20 ? 00:00:00 [kpsmoused] root 656 2 0 Nov20 ? 00:00:02 [edac-poller] root 701 2 0 Nov20 ? 00:00:00 [usbhid_resumer] root 713 2 0 Nov20 ? 00:00:00 [ata/0] root 714 2 0 Nov20 ? 00:00:00 [ata/1] root 715 2 0 Nov20 ? 00:00:00 [ata/2] root 716 2 0 Nov20 ? 00:00:00 [ata/3] root 717 2 0 Nov20 ? 00:00:00 [ata/4] root 718 2 0 Nov20 ? 00:00:00 [ata/5] root 719 2 0 Nov20 ? 00:00:00 [ata/6] root 720 2 0 Nov20 ? 00:00:00 [ata/7] root 721 2 0 Nov20 ? 00:00:00 [ata_aux] root 724 2 0 Nov20 ? 00:00:00 [scsi_eh_0] root 725 2 0 Nov20 ? 00:00:00 [scsi_eh_1] root 733 2 0 Nov20 ? 00:00:00 [scsi_eh_2] root 734 2 0 Nov20 ? 00:00:00 [usb-storage] root 753 2 0 Nov20 ? 00:00:00 [kstriped] root 759 2 0 Nov20 ? 00:00:00 [ksnapd] root 763 2 0 Nov20 ? 00:33:13 [md3_raid1] root 766 2 0 Nov20 ? 00:00:24 [md2_raid1] root 769 2 0 Nov20 ? 00:00:46 [md1_raid1] root 772 2 0 Nov20 ? 00:00:49 [md0_raid1] root 777 2 0 Nov20 ? 00:00:00 [kjournald] root 803 2 0 Nov20 ? 00:00:00 [kauditd] root 840 1 0 Nov20 ? 00:00:03 /sbin/udevd -d root 1450 3450 0 20:01 ? 00:00:00 crond root 1451 1450 0 20:01 ? 00:00:00 /bin/bash /usr/bin/run-parts /et root 1452 1451 0 20:01 ? 00:00:00 /bin/bash /etc/cron.hourly/mcelo root 1453 1451 0 20:01 ? 00:00:00 awk -v progname=/etc/cron.hourly root 1454 1452 0 20:01 ? 00:00:00 /usr/sbin/mcelog --ignorenodev - 0001001 2207 3393 0 20:10 ? 00:00:00 sshd: 0001001 [priv] sshd 2208 2207 0 20:10 ? 00:00:00 sshd: 0001001 [net] root 2210 3230 0 20:10 ? 00:00:00 /bin/mount -t nfs -s -o retry=10 root 2211 2210 0 20:10 ? 00:00:00 /sbin/mount.nfs fish1.nyc root 2323 2 0 Nov20 ? 00:00:00 [kdmflush] root 2358 2 0 Nov20 ? 00:00:00 [kjournald] root 2359 2 0 Nov20 ? 00:00:01 [kjournald] root 2585 3393 0 12:43 ? 00:00:00 sshd: 001002[priv] 001002 2590 2585 0 12:43 ? 00:00:00 sshd: 001002@.../3 001002 2591 2590 0 12:43 pts/3 00:00:00 -bash root 2740 2 0 17:53 ? 00:00:00 [kslowd000] root 2933 1 0 Nov20 ? 00:00:00 auditd root 2935 2933 0 Nov20 ? 00:00:00 /sbin/audispd root 2962 2 0 Nov20 ? 00:26:41 [kipmi0] root 2981 1 0 Nov20 ? 00:00:01 syslogd -m 0 root 2984 1 0 Nov20 ? 00:00:00 klogd -x root 3019 1 0 Nov20 ? 00:00:00 cachefilesd root 3031 1 0 Nov20 ? 00:01:50 irqbalance rpc 3047 1 0 Nov20 ? 00:00:00 portmap root 3073 2 0 Nov20 ? 00:00:00 [rpciod/0] root 3074 2 0 Nov20 ? 00:00:00 [rpciod/1] root 3075 2 0 Nov20 ? 00:00:00 [rpciod/2] root 3076 2 0 Nov20 ? 00:00:00 [rpciod/3] root 3077 2 0 Nov20 ? 00:00:00 [rpciod/4] root 3078 2 0 Nov20 ? 00:00:00 [rpciod/5] root 3079 2 0 Nov20 ? 00:00:00 [rpciod/6] root 3080 2 0 Nov20 ? 00:00:00 [rpciod/7] root 3086 1 0 Nov20 ? 00:00:00 rpc.statd root 3135 1 0 Nov20 ? 00:00:02 mdadm --monitor --scan -f --pid- root 3156 1 0 Nov20 ? 00:00:01 rpc.idmapd root 3195 1 0 Nov20 ? 00:00:00 /usr/sbin/acpid root 3230 1 0 Nov20 ? 00:02:33 automount daemon 3318 1 0 Nov20 ? 00:00:35 /usr/sbin/munged root 3333 1 0 Nov20 ? 00:02:07 /usr/sbin/snmpd -Lsd -Lf /dev/nu distcc 3378 1 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo distcc 3379 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo root 3393 1 0 Nov20 ? 00:00:00 /usr/sbin/sshd distcc 3412 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo distcc 3414 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo root 3450 1 0 Nov20 ? 00:00:01 crond distcc 3459 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo root 3466 1 0 Nov20 ? 00:00:00 /opt/slurm/sbin/slurmd postfix 3476 1 0 Nov20 ? 00:00:00 /usr/sbin/nullmailer-send root 3496 1 0 Nov20 ? 00:00:00 /usr/sbin/atd distcc 3564 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo distcc 3594 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo root 3596 1 0 Nov20 ? 00:00:00 /usr/sbin/smartd -q never root 3599 1 0 Nov20 tty1 00:00:00 /sbin/mingetty tty1 root 3600 1 0 Nov20 tty2 00:00:00 /sbin/mingetty tty2 root 3601 1 0 Nov20 tty3 00:00:00 /sbin/mingetty tty3 root 3602 1 0 Nov20 tty4 00:00:00 /sbin/mingetty tty4 root 3603 1 0 Nov20 tty5 00:00:00 /sbin/mingetty tty5 root 3604 1 0 Nov20 tty6 00:00:00 /sbin/mingetty tty6 distcc 3618 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo distcc 3620 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo distcc 3623 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo distcc 3626 3378 0 Nov20 ? 00:00:00 /usr/bin/distccd --daemon --allo root 3638 1 0 Nov20 ttyS1 00:00:00 /sbin/agetty -L ttyS1 19200 vt10 root 3639 1 0 Nov20 ttyS0 00:00:00 /sbin/agetty -L ttyS0 115200 vt1 root 3650 2 0 Nov20 ? 00:00:00 [nfsiod] root 4782 1 0 Nov20 ? 00:00:33 /usr/bin/python /opt/rocks/bin/g nobody 4824 1 0 Nov20 ? 00:00:35 /usr/sbin/gmond root 5164 3393 0 20:48 ? 00:00:00 sshd: root@.../8 001003 5211 1 0 20:48 ? 00:00:00 /usr/bin/xauth -q - root 6264 3393 0 20:57 ? 00:00:00 sshd: root@.../10 root 6274 6264 0 20:57 pts/10 00:00:00 -bash root 6335 6274 0 20:58 pts/10 00:00:00 ps -ef root 7138 2 0 Nov20 ? 00:00:00 [lockd] 001003 7607 1 0 17:55 ? 00:00:00 -bash root 7890 3393 0 Nov20 ? 00:00:00 sshd: 001004 [priv] 001004 7898 7890 0 Nov20 ? 00:00:03 sshd: 001004@.../0 001004 7899 7898 0 Nov20 pts/0 00:00:00 -tcsh root 25087 2 0 16:12 ? 00:00:00 [kslowd001] ntp 25923 1 0 05:38 ? 00:00:00 ntpd -u ntp:ntp -p /var/run/ntpd root 27886 3393 0 Nov22 ? 00:00:00 sshd: 001005 [priv] 001005 27893 27886 0 Nov22 ? 00:00:02 sshd: 001005@.../1 001005 27895 27893 0 Nov22 pts/1 00:00:00 -bash 001003 28573 7607 0 19:03 ? 00:00:00 [python2.5] 001003 29197 1 0 19:10 ? 00:00:00 -bash 001003 30030 29197 99 19:11 ? 01:46:10 python2.5 /u/nyc/001003/lib/root 001003 30127 1 0 19:12 ? 00:00:00 /usr/bin/xauth -q - 001003 30149 1 0 19:12 ? 00:00:00 -bash root 30181 3230 0 19:12 ? 00:00:00 /bin/mount -t nfs -s -o retry=10 root 30182 30181 0 19:12 ? 00:00:00 /sbin/mount.nfs host3.nyc root 30245 3393 0 19:13 ? 00:00:00 sshd: root@.../7 root 30353 1 0 19:14 ? 00:00:00 /sbin/umount.nfs /data/desrad-p root 30504 1 0 19:16 ? 00:00:00 /sbin/umount.nfs /u/nyc/001008 root 31003 3230 0 19:22 ? 00:00:00 /bin/mount -t nfs -s -o retry=10 root 31004 31003 0 19:22 ? 00:00:00 /sbin/mount.nfs host3.nyc root 31569 1 0 19:30 ? 00:00:00 /sbin/umount.nfs /proj/desrad-a root 31632 1 0 19:31 ? 00:00:00 /sbin/umount.nfs /u/nyc/0001001 root 31653 1 0 19:31 ? 00:00:00 /sbin/umount.nfs /proj/desrad -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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