Auto Reboot on Merlin 382.1

[Terence Chan]

auto reboot occasionally today, see some error on dmesg

rc16 jbd2 ext3 jbd mbcache usb_storage sg sd_mod scsi_wait_scan scsi_mod ebt_ip ebtable_broute ebtable_filter ebtables ip6t_LOG ip6table_filter jffs2 zlib_deflate cdc_mbim qmi_wwan cdc_wdm cdc_ncm rndis_host cdc_ether asix cdc_acm usbnet mii ohci_hcd ehci_hcd usbcore nf_nat_pptp nf_conntrack_pptp nf_nat_proto_gre nf_conntrack_proto_gre dhd24 dpsta(P) et(P) igs(P) emf(P) ctf(P) rtl8365mb(P) [last unloaded: nf_conntrack_ftp]
CPU: 0 Tainted: P (2.6.36.4brcmarm #1)
PC is at flush_dcache_page+0x18/0xa8
LR is at rq_flush_dcache_pages+0x40/0x64
pc : [<800591a0>] lr : [<80166c48>] psr: 00000013
sp : 9f9bdf70 ip : 9f99b5a8 fp : 00004a56
r10: 9d312a00 r9 : 00000000 r8 : 9f9a2000
r7 : 96ef1078 r6 : 96efb700 r5 : 00000001 r4 : 00000000
r3 : 88401f80 r2 : 96ef1078 r1 : 88316781 r0 : 00000000
Flags: nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 10c53c7d Table: 5758c04a DAC: 00000017
Process mtdblock3 (pid: 27, stack limit = 0x9f9bc270)
Stack: (0x9f9bdf70 to 0x9f9be000)
df60: 0000000c 80166c48 00000200 9fa9ba90
df80: 9f9b0fd8 9f9a2010 80424928 801bd460 00000000 9f9bc000 9f9bdfbc 9f82fe98
dfa0: 9f9bdfcc 9f9a2000 801bd284 00000000 00000000 00000000 00000000 80090990
dfc0: 9f82fe98 00000000 9f9a2000 00000000 00000000 00000000 9f9bdfd8 9f9bdfd8
dfe0: 00000000 9f82fe98 80090908 80051b8c 00000013 80051b8c 0ffe97e7 d347d5c2
[<800591a0>] (PC is at flush_dcache_page+0x18/0xa8)
[<800591a0>] (flush_dcache_page+0x18/0xa8) from [<80166c48>] (rq_flush_dcache_pages+0x40/0x64)
[<80166c48>] (rq_flush_dcache_pages+0x40/0x64) from [<801bd460>] (mtd_blktrans_thread+0x1dc/0x294)
[<801bd460>] (mtd_blktrans_thread+0x1dc/0x294) from [<80090990>] (kthread+0x88/0x90)
[<80090990>] (kthread+0x88/0x90) from [<80051b8c>] (kernel_thread_exit+0x0/0x8)
Code: e1a04000 e5933000 e1500003 08bd8010 (e5903000)
---[ end trace f282d6cc68e7ecfb ]---
Kernel panic - not syncing: Fatal exception
[<8005701c>] (unwind_backtrace+0x0/0xf8) from [<8030d138>] (panic+0x7c/0x1a8)
[<8030d138>] (panic+0x7c/0x1a8) from [<800546f0>] (die+0x1a4/0x1dc)
[<800546f0>] (die+0x1a4/0x1dc) from [<80058 ] (__do_kernel_fault+0x6c/0x8c)
[<800584b4>] (__do_kernel_fault+0x6c/0x8c) from [<80058624>] (do_page_fault+0x150/0x1ec)
[<80058624>] (do_page_fault+0x150/0x1ec) from [<800503a4>] (do_DataAbort+0x30/0x9c)
[<800503a4>] (do_DataAbort+0x30/0x9c) from [<803d14cc>] (__dabt_svc+0x4c/0x60)
Exception stack(0x9f9bdf28 to 0x9f9bdf70)
df20: 00000000 88316781 96ef1078 88401f80 00000000 00000001
df40: 96efb700 96ef1078 9f9a2000 00000000 9d312a00 00004a56 9f99b5a8 9f9bdf70
df60: 80166c48 800591a0 00000013 ffffffff
[<803d14cc>] (__dabt_svc+0x4c/0x60) from [<800591a0>] (flush_dcache_page+0x18/0xa8)
[<800591a0>] (flush_dcache_page+0x18/0xa8) from [<80166c48>] (rq_flush_dcache_pages+0x40/0x64)
[<80166c48>] (rq_flush_dcache_pages+0x40/0x64) from [<801bd460>] (mtd_blktrans_thread+0x1dc/0x294)
[<801bd460>] (mtd_blktrans_thread+0x1dc/0x294) from [<80090990>] (kthread+0x88/0x90)
[<80090990>] (kthread+0x88/0x90) from [<80051b8c>] (kernel_thread_exit+0x0/0x8)
[<8005701c>] (unwind_backtrace+0(do_IPI+0x114/0x154) from [<803d 88418020 9901c600
d>[<803d1540>] (__irq_svc+0x60/0x138) from [<80051be8>] (default_24)
Rebooting in 3 seconds..