Бодрого времени суток!
После увеличения корневого раздела системы в лог начали падать сообщения следующего вида:
В kernel:
May 12 16:02:26 lord kernel: [ 2632.049062] BUG: soft lockup - CPU#2 stuck for 23s! [smbd:9992]
May 12 16:02:40 lord kernel: [ 2646.921061] INFO: rcu_sched self-detected stall on CPU
May 12 16:02:40 lord kernel: [ 2646.921061] INFO: rcu_sched self-detected stall on CPU { 2}
May 12 16:03:05 lord kernel: [ 2672.038063] BUG: soft lockup - CPU#1 stuck for 22s! [smbd:6815]
May 12 16:03:06 lord kernel: [ 2672.049062] BUG: soft lockup - CPU#2 stuck for 22s! [smbd:9992]
May 12 16:03:33 lord kernel: [ 2700.038058] BUG: soft lockup - CPU#1 stuck for 22s! [smbd:6815]
May 12 16:03:34 lord kernel: [ 2700.049057] BUG: soft lockup - CPU#2 stuck for 22s! [smbd:9992]
May 12 16:04:01 lord kernel: [ 2728.038056] BUG: soft lockup - CPU#1 stuck for 22s! [smbd:6815]
May 12 16:04:02 lord kernel: [ 2728.049056] BUG: soft lockup - CPU#2 stuck for 22s! [smbd:9992]
May 12 16:04:29 lord kernel: [ 2756.038062] BUG: soft lockup - CPU#1 stuck for 22s! [smbd:6815]
May 12 16:04:30 lord kernel: [ 2756.049061] BUG: soft lockup - CPU#2 stuck for 22s! [smbd:9992]
May 12 16:04:57 lord kernel: [ 2784.038060] BUG: soft lockup - CPU#1 stuck for 22s! [smbd:6815]
May 12 16:04:58 lord kernel: [ 2784.049061] BUG: soft lockup - CPU#2 stuck for 22s! [smbd:9992]
May 12 16:05:25 lord kernel: [ 2812.038060] BUG: soft lockup - CPU#1 stuck for 22s! [smbd:6815]
May 12 16:05:26 lord kernel: [ 2812.049061] BUG: soft lockup - CPU#2 stuck for 22s! [smbd:9992]
May 12 16:05:40 lord kernel: [ 2826.925061] INFO: rcu_sched self-detected stall on CPU
May 12 16:05:40 lord kernel: [ 2826.925061] INFO: rcu_sched self-detected stall on CPU { 1}
May 12 16:06:05 lord kernel: [ 2852.038057] BUG: soft lockup - CPU#1 stuck for 23s! [smbd:6815]
May 12 16:06:06 lord kernel: [ 2852.049066] BUG: soft lockup - CPU#2 stuck for 23s! [smbd:9992]
May 12 16:06:33 lord kernel: [ 2880.038057] BUG: soft lockup - CPU#1 stuck for 23s! [smbd:6815]
May 12 16:06:34 lord kernel: [ 2880.049057] BUG: soft lockup - CPU#2 stuck for 23s! [smbd:9992]
May 12 16:07:01 lord kernel: [ 2908.038062] BUG: soft lockup - CPU#1 stuck for 23s! [smbd:6815]
May 12 16:07:02 lord kernel: [ 2908.049062] BUG: soft lockup - CPU#2 stuck for 23s! [smbd:9992]
В messages при этом попадает:
May 12 16:07:01 lord kernel: [ 2908.038062] BUG: soft lockup - CPU#1 stuck for 23s! [smbd:6815]
May 12 16:07:01 lord kernel: [ 2908.038062] Modules linked in: ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp bridge stp llc af_packet nfsd auth_rpcgss oid_registry nfs_acl lockd autofs4 nls_utf8 cifs dns_resolver fscache sunrpc ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ipt_ULOG nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables dm_multipath scsi_dh joydev hid_generic usbhid hid ppdev dm_mod cirrus drm_kms_helper ttm psmouse uhci_hcd drm ehci_hcd floppy parport_pc parport usbcore usb_common i2c_piix4 intel_agp intel_gtt i2c_core pcspkr processor button tun ext4 crc16 mbcache jbd2 sr_mod cdrom ata_generic pata_acpi ata_piix libata serio_raw evdev scsi_mod
May 12 16:07:01 lord kernel: [ 2908.038062] CPU: 1 PID: 6815 Comm: smbd Tainted: G W 3.14.67-std-def-alt0.M70P.1 #1
May 12 16:07:01 lord kernel: [ 2908.038062] Hardware name: Xen HVM domU, BIOS 4.1.3 11/23/2012
May 12 16:07:01 lord kernel: [ 2908.038062] task: ffff8800e7efe4d0 ti: ffff8800e6476000 task.ti: ffff8800e6476000
May 12 16:07:01 lord kernel: [ 2908.038062] RIP: 0010:[<ffffffff810013a8>] [<ffffffff810013a8>] xen_hypercall_sched_op+0x8/0x20
May 12 16:07:01 lord kernel: [ 2908.038062] RSP: 0018:ffff8800e6477d20 EFLAGS: 00000206
May 12 16:07:01 lord kernel: [ 2908.038062] RAX: 0000000000000000 RBX: ffff8800e6477ee2 RCX: 00000000fffffffa
May 12 16:07:01 lord kernel: [ 2908.038062] RDX: 0000000000000000 RSI: ffff8800e6477d30 RDI: 0000000000000003
May 12 16:07:01 lord kernel: [ 2908.038062] RBP: ffff8800e6477d58 R08: ffff88010942f340 R09: ffff88010ac00b10
May 12 16:07:01 lord kernel: [ 2908.038062] R10: ffff8800e6477ee2 R11: 0000000000000004 R12: ffff8800e6477d40
May 12 16:07:01 lord kernel: [ 2908.038062] R13: ffff8800e6477d18 R14: ffff8800e6477cc0 R15: 0000000000000000
May 12 16:07:01 lord kernel: [ 2908.038062] FS: 00007fe6c40417c0(0000) GS:ffff88010f820000(0000) knlGS:0000000000000000
May 12 16:07:01 lord kernel: [ 2908.038062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
May 12 16:07:01 lord kernel: [ 2908.038062] CR2: 00007fe6c4125968 CR3: 00000000e6eb9000 CR4: 00000000000006e0
May 12 16:07:01 lord kernel: [ 2908.038062] Stack:
May 12 16:07:01 lord kernel: [ 2908.038062] ffffffff8138d469 00000011e6477d38 ffff8800e6477d2c ffff880000000001
May 12 16:07:01 lord kernel: [ 2908.038062] 0000000000000000 ffff8800e6477d58 ffff88010f82af20 ffff8800e6477d68
May 12 16:07:01 lord kernel: [ 2908.038062] ffffffff8138e8eb ffff8800e6477dc8 ffffffff810145cd 00000d1aee0686b3
May 12 16:07:01 lord kernel: [ 2908.038062] Call Trace:
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff8138d469>] ? xen_poll_irq_timeout+0x39/0x50
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff8138e8eb>] xen_poll_irq+0xb/0x10
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff810145cd>] xen_lock_spinning+0xfd/0x290
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff810143c1>] __raw_callee_save_xen_lock_spinning+0x11/0x20
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff8155a332>] ? _raw_spin_lock+0x42/0x50
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff8152e5d0>] ? unix_state_double_lock+0x60/0x70
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff81530293>] unix_dgram_connect+0x93/0x200
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff8147e95b>] SYSC_connect+0xdb/0x100
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff8147edd9>] SyS_connect+0x9/0x10
May 12 16:07:01 lord kernel: [ 2908.038062] [<ffffffff815631e7>] tracesys+0xdd/0xe2
May 12 16:07:01 lord kernel: [ 2908.038062] Code: cc cc cc b8 1c 00 00 00 0f 01 c1 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc b8 1d 00 00 00 0f 01 c1 <c3> cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
И в результате, система нагружая проц от 40 до 70 процентов благополучно висит.
С чем оное может быть связано?
