megaraid_sas モジュールの megasas_reset_timer() 関数でカーネルパニックが発生する

Issue

• megasas_reset_timer() でカーネルパニックが発生します。

BUG: unable to handle kernel paging request at 000000ff00000058
IP:[<ffffffffa00448af>] megasas_reset_timer+0x4f/0xa0 [megaraid_sas] 
PGD 0 
Oops:0000 [#1] SMP 
last sysfs file:/sys/module/ip_tables/initstate
CPU 0 
Modules linked in: iptable_mangle iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables bridge stp llc bonding ipv6 uinput power_meter sg dcdbas microcode sb_edac edac_core iTCO_wdt iTCO_vendor_support shpchp tg3 bnx2x libcrc32c mdio ext4 mbcache jbd2 sd_mod crc_t10dif ahci megaraid_sas wmi dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]

Pid:0, comm: swapper Tainted:G        W  ----------------   2.6.32-220.el6.x86_64 #1 Dell Inc. PowerEdge M620/0VHRN7
RIP:0010:[<ffffffffa00448af>]  [<ffffffffa00448af>] megasas_reset_timer+0x4f/0xa0 [megaraid_sas]
RSP:0018:ffff880028203da0  EFLAGS:00010046
RAX:000000ff00000000 RBX: ffff88077a514780 RCX:000000010dcba62a
RDX:000000010dca48c0 RSI:0000000000002007 RDI: ffff88077a514780
RBP: ffff880028203db0 R08: ffff88002820db00 R09:0000d2b1b5f86800
R10:0000000000000010 R11:0000000000000000 R12:0000000000000286
R13: ffff88081d9d0780 R14:0000000000000000 R15: ffff8804232a3270
FS:0000000000000000(0000) GS:ffff880028200000(0000) knlGS:0000000000000000
CS:0010 DS:0018 ES:0018 CR0:000000008005003b
CR2:000000ff00000058 CR3:000000081f2ca000 CR4:00000000000406f0
DR0:0000000000000000 DR1:0000000000000000 DR2:0000000000000000
DR3:0000000000000000 DR6:00000000ffff0ff0 DR7:0000000000000400
Process swapper (pid:0, threadinfo ffffffff81a00000, task ffffffff81a8d020)
Stack:
 ffff88081d9d0780 ffff88077a514780 ffff880028203dd0 ffffffff8135fd28
<0> ffff88081d9d0a40 0000000000000286 ffff880028203df0 ffffffff812568cb
<0> 0000000000000086 ffff8804232a2e60 ffff880028203e40 ffffffff81256b88
Call Trace:
 <IRQ> 
 [<ffffffff8135fd28>] scsi_times_out+0x48/0xc0
 [<ffffffff812568cb>] blk_rq_timed_out+0x1b/0x70
 [<ffffffff81256b88>] blk_rq_timed_out_timer+0xe8/0x140
 [<ffffffff81256aa0>] ? blk_rq_timed_out_timer+0x0/0x140
 [<ffffffff8107c957>] run_timer_softirq+0x197/0x340
 [<ffffffff810a0b70>] ? tick_sched_timer+0x0/0xc0
 [<ffffffff8102ad2d>] ? lapic_next_event+0x1d/0x30
 [<ffffffff81072161>] __do_softirq+0xc1/0x1d0
 [<ffffffff81095770>] ? hrtimer_interrupt+0x140/0x250
 [<ffffffff8100c24c>] call_softirq+0x1c/0x30
 [<ffffffff8100de85>] do_softirq+0x65/0xa0
 [<ffffffff81071f45>] irq_exit+0x85/0x90
 [<ffffffff814f4e00>] smp_apic_timer_interrupt+0x70/0x9b
 [<ffffffff8100bc13>] apic_timer_interrupt+0x13/0x20
 <EOI> 
 [<ffffffff812c4a6e>] ? intel_idle+0xde/0x170
 [<ffffffff812c4a51>] ? intel_idle+0xc1/0x170
 [<ffffffff81097c6d>] ? sched_clock_cpu+0xcd/0x110
 [<ffffffff813f9f67>] cpuidle_idle_call+0xa7/0x140
 [<ffffffff81009e06>] cpu_idle+0xb6/0x110
 [<ffffffff814d413a>] rest_init+0x7a/0x80
 [<ffffffff81c1ff76>] start_kernel+0x424/0x430
 [<ffffffff81c1f33a>] x86_64_start_reservations+0x125/0x129
 [<ffffffff81c1f438>] x86_64_start_kernel+0xfa/0x109
Code: c1 20 bf 02 00 48 39 d1 78 0f 48 8b 5b 40 b0 02 f6 83 80 06 00 00 01 74 0b 48 83 c4 08 5b c9 c3 0f 1f 40 00 48 8b 83 e0 05 00 00 <48> 8b 78 58 e8 48 a9 4a e1 48 8b 93 e0 05 00 00 48 89 c6 c7 82 
RIP  [<ffffffffa00448af>] megasas_reset_timer+0x4f/0xa0 [megaraid_sas]
 RSP <ffff880028203da0>
CR2:000000ff00000058