[SOLVED] Cannot boot to Ubuntu 14.04.3 [alloc magic is broken / kernel panic]

a_sad_panda · 09-30-2015, 02:10 PM

So this has been slowly been developing on my system. At first it would show me a GRUB error message that says

Quote:

Attempt to read or write outside disk 'hd0'
alloc magic is broken at 0xdf54cb70:0

But after a few attempts of rebooting my computer, it would fix itself.

Lately, I've been getting this more frequently and with kernel panics to the point that I cannot boot anymore. Whenever I don't see the "magic alloc" error or a kernel panic, it shows me the GRUB (bootloader?) and I select my OS but it recurses back to the BIOS. This keeps on continuing until I do a full shutdown.

This is what I've written down from the output from screen from the panic.

Quote:

[ 0.907005] Hardware name: MSI MS-7788/H61M-P31 (G3), BIOS V2.7 01/10/2013
[ 0.907033] ffffea000368fa00 ffff880119bbbdb8 ffffffff817af467 000000000000220c
[ 0.907154] ffffffff81a7c6c0 ffff880119bbbe38 ffffffff817a9328 3030623019bbbdd8
[ 0.907275] 6230002000000010 ffff880119bbbe48 ffff880119bbbde8 ffff880119bbbe38
[ 0.907396] Call Trace:
[ 0.907425] [<ffffffff817af467>] dump_stack+0x45/0x57
[ 0.907453] [<ffffffff817a9328>] panic+0xc1/0x1f5
[ 0.907482] [<ffffffff81d3e5f3>] mount_block_root+0x210/0x2a9
[ 0.907510] [<ffffffff81d3e822>] mount_root+0x54/0x58
[ 0.907537] [<ffffffff81d3e993>] prepare_namespace+0x16d/0x1a6
[ 0.907566] [<ffffffff81d3e304>] kernel_init_freeable+0x1f6/0x20b
[ 0.907594] [<ffffffff81d3d9a7>] ? initcall_blacklist+0xc0/0xc0
[ 0.907621] [<ffffffff8179faa0>] ? rest_init+0x80/0x80
[ 0.907649] [<ffffffff8179faae>] kernel_init+0xe/0xf0
[ 0.907677] [<ffffffff817b6d98>] ret_from_fork+0x58/0x90
[ 0.907704] [<ffffffff8179faa0>] ? rest_init+0x80/0x80
[ 0.907776] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 0.907815] --[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

My kernel version is 3.19-(x) on Ubuntu 14.04.3.

Keruskerfuerst · 10-04-2015, 10:33 AM

Hardwareinfo and age of computer?

a_sad_panda · 10-04-2015, 03:14 PM

Quote:

Originally Posted by Keruskerfuerst

Hardwareinfo and age of computer?

Do you mean 'hwinfo' or just write down what I have? I'll post 'lspci -v' info meanwhile.

The most recent changes to my hardware was removing a hard disk which contained Windows 7 and adding a new PSU because it was slightly underpowered that resulted in graphical artifacts on my screen. I did a memtest and found no issue.

The hardware:
intel i3-2100 3.10ghz (Almost two years)
MSI MS-7788/H61M-P31 (Almost two years)
Seagate Barracuda ST500DM002 (Almost two years)
AMD Radeon R7 260x (Less than one year)

Here's the hw log:

Quote:

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788
Flags: bus master, fast devsel, latency 0
Capabilities: <access denied>
Kernel driver in use: snb_uncore

00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: f7e00000-f7efffff
Prefetchable memory behind bridge: 00000000e0000000-00000000f07fffff
Capabilities: <access denied>
Kernel driver in use: pcieport

00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788
Flags: bus master, fast devsel, latency 0, IRQ 27
Memory at f7f08000 (64-bit, non-prefetchable) [size=16]
Capabilities: <access denied>
Kernel driver in use: mei_me

00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788
Flags: bus master, medium devsel, latency 0, IRQ 16
Memory at f7f06000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci

00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device d788
Flags: bus master, fast devsel, latency 0, IRQ 28
Memory at f7f00000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel

00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Prefetchable memory behind bridge: 00000000f0900000-00000000f09fffff
Capabilities: <access denied>
Kernel driver in use: pcieport

00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at f7f05000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci

00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset Family LPC Controller (rev 05)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788
Flags: bus master, medium devsel, latency 0
Capabilities: <access denied>
Kernel driver in use: lpc_ich

00:1f.2 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family 4 port SATA IDE Controller (rev 05) (prog-if 8f [Master SecP SecO PriP PriO])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19
I/O ports at f0d0 [size=8]
I/O ports at f0c0 [size=4]
I/O ports at f0b0 [size=8]
I/O ports at f0a0 [size=4]
I/O ports at f090 [size=16]
I/O ports at f080 [size=16]
Capabilities: <access denied>
Kernel driver in use: ata_piix

00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788
Flags: medium devsel, IRQ 3
Memory at f7f04000 (64-bit, non-prefetchable) [size=256]
I/O ports at f000 [size=32]

00:1f.5 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family 2 port SATA IDE Controller (rev 05) (prog-if 85 [Master SecO PriO])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19
I/O ports at f070 [size=8]
I/O ports at f060 [size=4]
I/O ports at f050 [size=8]
I/O ports at f040 [size=4]
I/O ports at f030 [size=16]
I/O ports at f020 [size=16]
Capabilities: <access denied>
Kernel driver in use: ata_piix

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Bonaire XTX [Radeon R7 260X] (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device 048f
Flags: bus master, fast devsel, latency 0, IRQ 26
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at f0000000 (64-bit, prefetchable) [size=8M]
I/O ports at e000 [size=256]
Memory at f7e00000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at f7e40000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon

01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Device aac0
Subsystem: ASUSTeK Computer Inc. Device aac0
Flags: bus master, fast devsel, latency 0, IRQ 29
Memory at f7e60000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel

03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788
Flags: bus master, fast devsel, latency 0, IRQ 25
I/O ports at d000 [size=256]
Memory at f0904000 (64-bit, prefetchable) [size=4K]
Memory at f0900000 (64-bit, prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: r8169

a_sad_panda · 10-07-2015, 02:34 PM

I've tried 'grub-install' from a live USB. It told me it installed successfully but no solution so far. It did however give me a new error in GRUB. It still does its thing like before but it gave me a new error now.

Quote:

unaligned pointer 0xffffffff

If someone can make sense of this, please reply. I'm going to keep searching for an answer.

a_sad_panda · 10-07-2015, 07:32 PM

So after moving and untangling the SATA cables into different ports, I booted up the machine and had no trouble getting it to boot to Ubuntu. No errors or nothing. I guess that it might be a hardware error due to a SATA cable not being properly plugged but I'll mark as solved if nothing happens in a week.