BUG: soft lockup - CPU#XX stuck for XXs! [swapper:0] - :llt:llt_timer_handler+0x244/0x8fb

Issue

• Issue in the Veritas Low Latency Transport (LLT) module.
• Soft lockup on swapper process with following errors:

kernel: BUG: soft lockup - CPU#14 stuck for 10s! [swapper:0]
kernel: CPU 14:
kernel: Modules linked in: nfs fscache nfs_acl ipmi_watchdog vxfen(PU) gab(PU) llt(PU) autofs4 ipmi_devintf ipmi_si ipmi_msghandler dmpaa(PU) vxspec(PFU) vxio(PFU) vxdmp(PU»
kernel: Pid: 0, comm: swapper Tainted: PF  M  2.6.18-194.26.1.el5 #1
kernel: RIP: 0010:[<ffffffff80064c20>]  [<ffffffff80064c20>] .text.lock.spinlock+0x26/0x30
kernel: RSP: 0018:ffff81180c28bea0  EFLAGS: 00000282
kernel: RAX: ffff81180c285fd8 RBX: ffff812fef70cb30 RCX: ffff81180c27c988
kernel: RDX: 000000000000015e RSI: 13cc68f36232d327 RDI: ffff812fef70cb34
kernel: RBP: ffff81180c28be20 R08: 0000000000000032 R09: ffff81180c285e08
kernel: R10: 0000000000000001 R11: 0000000000000206 R12: ffffffff8005dc8e
kernel: R13: ffff812fef70cb34 R14: ffffffff80078225 R15: ffff81180c28be20
kernel: FS:  0000000000000000(0000) GS:ffff81180c07b4c0(0000) knlGS:0000000000000000
kernel: CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
kernel: CR2: 0000003bedc9a6e0 CR3: 0000002ff8cd9000 CR4: 00000000000006e0
kernel:·
kernel: Call Trace:
kernel:  <IRQ>  [<ffffffff88d1b558>] :llt:llt_timer_handler+0x244/0x8fb
kernel:  [<ffffffff8008dcba>] rebalance_tick+0x183/0x3cb
kernel:  [<ffffffff88d1b314>] :llt:llt_timer_handler+0x0/0x8fb
kernel:  [<ffffffff80097bb6>] run_timer_softirq+0x193/0x241
kernel:  [<ffffffff80012443>] __do_softirq+0x89/0x133
kernel:  [<ffffffff8005e2fc>] call_softirq+0x1c/0x28
kernel:  [<ffffffff8006cb8a>] do_softirq+0x2c/0x85
kernel:  [<ffffffff8005dc8e>] apic_timer_interrupt+0x66/0x6c
kernel:  <EOI>  [<ffffffff8019d6d4>] acpi_processor_idle_simple+0x17d/0x30e
kernel:  [<ffffffff8019d5c3>] acpi_processor_idle_simple+0x6c/0x30e
kernel:  [<ffffffff8019d557>] acpi_processor_idle_simple+0x0/0x30e
kernel:  [<ffffffff8019d557>] acpi_processor_idle_simple+0x0/0x30e
kernel:  [<ffffffff8004923a>] cpu_idle+0x95/0xb8
kernel:  [<ffffffff80077991>] start_secondary+0x498/0x4a7