Version: 5.0-rc12a

 

uname -a output:

Linux 3.4.36-unRAID #1 SMP Wed Mar 20 12:54:40 PDT 2013 i686 AMD Turion II Neo N40L Dual-Core Processor AuthenticAMD GNU/Linux

 

I saw this error message in the DMESG log, unsure if there has been a failure or not. I access the server by both SMB and NFS. Full dmesg attached.

 

nfsd: last server has exited, flushing export cache

BUG: unable to handle kernel NULL pointer dereference at 00000028

IP: [<c106ad5b>] __remove_mapping+0x94/0xc3

*pdpt = 0000000032f12001 *pde = 0000000000000000

Oops: 0000 [#1] SMP

Modules linked in: md_mod xor sg ahci libahci k10temp hwmon tg3 i2c_piix4 i2c_co              re

 

Pid: 407, comm: kswapd0 Not tainted 3.4.36-unRAID #1 HP ProLiant MicroServer

EIP: 0060:[<c106ad5b>] EFLAGS: 00010046 CPU: 1

EIP is at __remove_mapping+0x94/0xc3

EAX: 00000000 EBX: ed0a79fc ECX: 00000000 EDX: 00000000

ESI: f5069a80 EDI: f5069a80 EBP: f3e85dc4 ESP: f3e85db8

DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068

CR0: 8005003b CR2: 00000028 CR3: 32ff2000 CR4: 000007f0

DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000

DR6: ffff0ff0 DR7: 00000400

Process kswapd0 (pid: 407, ti=f3e84000 task=f3eeca20 task.ti=f3e84000)

Stack:

f5069a94 f5069a80 f3e85f3c f3e85e1c c106b58a f3e85e0c f3c52500 f3eeca20

f3e85f6c 00000000 00000000 00000000 00000000 0000001c f3e85e5c 00000001

ed0a79fc f54897d4 f57a8a94 f3e85e04 f3e85e04 00000000 c1475340 f3e85f3c

Call Trace:

[<c106b58a>] shrink_page_list+0x37f/0x49d

[<c106ba3d>] shrink_inactive_list+0x1fd/0x349

[<c106bece>] shrink_mem_cgroup_zone+0x116/0x205

[<c106c290>] balance_pgdat+0x2d3/0x5e6

[<c106c6e2>] kswapd+0x13f/0x161

[<c106c5a3>] ? balance_pgdat+0x5e6/0x5e6

[<c1037794>] kthread+0x67/0x6c

[<c103772d>] ? kthread_freezable_should_stop+0x49/0x49

[<c1343376>] kernel_thread_helper+0x6/0xd

Code: 00 00 00 eb 49 8b 07 a9 00 00 01 00 74 1a 89 f8 8b 77 1c e8 a4 56 01 00 80              43 10 01 fb 89 fa 89 f0 e8 54 5d 01 00 eb 1f 8b 43 44 <8b> 70 28 89 f8 e8 3d 72              ff ff 80 43 10 01 fb 85 f6 b8 01 00 00

EIP: [<c106ad5b>] __remove_mapping+0x94/0xc3 SS:ESP 0068:f3e85db8

CR2: 0000000000000028

---[ end trace fb259e5609b68deb ]---

dmesg.txt

About half an hour later the server become inaccessible by either console or telnet.

 

Since a hard power off, I have completed 1 memtest cycle without error and have left it doing further cycles.