Oops in ext3_block_to_path.isra.40+0x26/0x11b

Oops in ext3_block_to_path.isra.40+0x26/0x11b

[George Spelvin]

During last night's backups, I got the following oops; I figured I should
report it.

I don't see any changes in all of fs/ext3 between -rc4 and -rc7, so I
presume the report is still valid.

[1536254.006284] BUG: unable to handle kernel NULL pointer dereference at 0000000000000094
[1536254.006327] IP: [<ffffffff810fbc32>] ext3_block_to_path.isra.40+0x26/0x11b
[1536254.006363] PGD 102451067 PUD 10c872067 PMD 0 
[1536254.006392] Oops: 0000 [#1] SMP 
[1536254.006414] CPU 1 
[1536254.006424] Modules linked in: battery nfsd exportfs nfs lockd auth_rpcgss nfs_acl sunrpc fuse loop ftdi_sio usbserial r8169 iTCO_wdt
[1536254.006516] 
[1536254.006526] Pid: 5250, comm: rsync Not tainted 3.3.0-rc4-00008-g0a3fa4f #43 Gigabyte Technology Co., Ltd. H55M-UD2H/H55M-UD2H
[1536254.006576] RIP: 0010:[<ffffffff810fbc32>]  [<ffffffff810fbc32>] ext3_block_to_path.isra.40+0x26/0x11b
[1536254.006617] RSP: 0018:ffff88010c84f978  EFLAGS: 00010206
[1536254.006640] RAX: 0000000000000400 RBX: 00000000003980a3 RCX: 0000000000000000
[1536254.006670] RDX: ffff88010c84fa90 RSI: 00000000003980a3 RDI: ffff88011340cc00
[1536254.006699] RBP: ffff88010c84f998 R08: ffff88010c84fc50 R09: 0000000000000000
[1536254.006728] R10: 00000000003980a4 R11: 0000000000000001 R12: 0000000000000400
[1536254.006758] R13: ffff88010c84fab0 R14: ffff88010c84fc50 R15: 0000000000000000
[1536254.006788] FS:  0000000000000000(0000) GS:ffff880117c80000(0063) knlGS:00000000f75786c0
[1536254.006821] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[1536254.006846] CR2: 0000000000000094 CR3: 000000010fb35000 CR4: 00000000000006e0
[1536254.006875] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[1536254.006905] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[1536254.006935] Process rsync (pid: 5250, threadinfo ffff88010c84e000, task ffff880021af9f40)
[1536254.006968] Stack:
[1536254.006979]  ffff88010c84fc50 ffff8801120dc0e0 0000000000000000 ffff88010c84fc50
[1536254.007016]  ffff88010c84fae8 ffffffff810fd5a0 0000000000000001 ffff88010c84fad8
[1536254.007054]  ffff88010c84fb08 0000000000000001 ffff88010c84fa18 ffffffff810baed3
[1536254.007092] Call Trace:
[1536254.007107]  [<ffffffff810fd5a0>] ext3_get_blocks_handle+0x64/0x916
[1536254.007137]  [<ffffffff810baed3>] ? poll_freewait+0x41/0xa5
[1536254.007163]  [<ffffffff8130c4fc>] ? tcp_poll+0x24/0x16b
[1536254.007186]  [<ffffffff810bb66f>] ? do_select+0x4bd/0x4da
[1536254.007210]  [<ffffffff810fdef1>] ext3_get_block+0x9f/0xdf
[1536254.007237]  [<ffffffff810d4cee>] do_mpage_readpage+0x175/0x48e
[1536254.007265]  [<ffffffff810299de>] ? local_bh_enable_ip+0x9/0xb
[1536254.007290]  [<ffffffff810d5051>] mpage_readpage+0x4a/0x65
[1536254.007314]  [<ffffffff810fde52>] ? ext3_get_blocks_handle+0x916/0x916
[1536254.007342]  [<ffffffff8130e453>] ? tcp_sendmsg+0x693/0x785
[1536254.007369]  [<ffffffff8107a693>] ? file_read_actor+0x9c/0x117
[1536254.007396]  [<ffffffff810403af>] ? should_resched+0x9/0x28
[1536254.007422]  [<ffffffff8135db84>] ? _cond_resched+0x9/0x1d
[1536254.007445]  [<ffffffff810fb663>] ext3_readpage+0x13/0x15
[1536254.007469]  [<ffffffff8107b2b8>] generic_file_aio_read+0x4a7/0x62c
[1536254.007498]  [<ffffffff810ace6a>] do_sync_read+0xbd/0xfd
[1536254.007521]  [<ffffffff810b801c>] ? getname_flags+0x29/0x1d0
[1536254.007546]  [<ffffffff810acc5a>] ? fsnotify_modify+0x5a/0x62
[1536254.007571]  [<ffffffff810ad567>] vfs_read+0xa4/0xeb
[1536254.007594]  [<ffffffff810ad5f3>] sys_read+0x45/0x69
[1536254.007617]  [<ffffffff8136011b>] sysenter_dispatch+0x7/0x1e
[1536254.007642] Code: 5b 41 5c 5d c3 55 48 89 e5 41 55 49 89 cd 41 54 53 48 89 f3 41 50 48 8b 47 18 48 8b 8f b0 02 00 00 48 c1 e8 02 48 85 db 41 89 c4 <8b> b1 94 00 00 00 79 0c 48 c7 c2 3c 82 44 81 e9 b1 00 00 00 48 
[1536254.007875] RIP  [<ffffffff810fbc32>] ext3_block_to_path.isra.40+0x26/0x11b
[1536254.007908]  RSP <ffff88010c84f978>
[1536254.007923] CR2: 0000000000000094
[1536254.068173] ---[ end trace 87b810932dd8374d ]---

The 8 local patches are in drivers/media/rc/ati_remote.c, and the module
wasn't even loaded.

Although the NFS modules are loaded, nothing is exported.
Likewise, the battery module is purely accidental.
There is one NFS mount, but it's quiescent.

CPU is a Core i3 530, on a Gigabyte motherbord, 4 GB RAM.  No ECC,
unfortunately, so I can't rule out hardware bit rot.  Distribution is
a fairly stock Debian/unstable.

Re: Oops in ext3_block_to_path.isra.40+0x26/0x11b

[Jan Kara]

On Tue 13-03-12 09:39:45, George Spelvin wrote:
> During last night's backups, I got the following oops; I figured I should
> report it.
  Thanks for report!

> I don't see any changes in all of fs/ext3 between -rc4 and -rc7, so I
> presume the report is still valid.
> 
> [1536254.006284] BUG: unable to handle kernel NULL pointer dereference at 0000000000000094
> [1536254.006327] IP: [<ffffffff810fbc32>] ext3_block_to_path.isra.40+0x26/0x11b
> [1536254.006363] PGD 102451067 PUD 10c872067 PMD 0 
> [1536254.006392] Oops: 0000 [#1] SMP 
> [1536254.006414] CPU 1 
> [1536254.006424] Modules linked in: battery nfsd exportfs nfs lockd auth_rpcgss nfs_acl sunrpc fuse loop ftdi_sio usbserial r8169 iTCO_wdt
> [1536254.006516] 
> [1536254.006526] Pid: 5250, comm: rsync Not tainted 3.3.0-rc4-00008-g0a3fa4f #43 Gigabyte Technology Co., Ltd. H55M-UD2H/H55M-UD2H
> [1536254.006576] RIP: 0010:[<ffffffff810fbc32>]  [<ffffffff810fbc32>] ext3_block_to_path.isra.40+0x26/0x11b
> [1536254.006617] RSP: 0018:ffff88010c84f978  EFLAGS: 00010206
> [1536254.006640] RAX: 0000000000000400 RBX: 00000000003980a3 RCX: 0000000000000000
> [1536254.006670] RDX: ffff88010c84fa90 RSI: 00000000003980a3 RDI: ffff88011340cc00
> [1536254.006699] RBP: ffff88010c84f998 R08: ffff88010c84fc50 R09: 0000000000000000
> [1536254.006728] R10: 00000000003980a4 R11: 0000000000000001 R12: 0000000000000400
> [1536254.006758] R13: ffff88010c84fab0 R14: ffff88010c84fc50 R15: 0000000000000000
> [1536254.006788] FS:  0000000000000000(0000) GS:ffff880117c80000(0063) knlGS:00000000f75786c0
> [1536254.006821] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
> [1536254.006846] CR2: 0000000000000094 CR3: 000000010fb35000 CR4: 00000000000006e0
> [1536254.006875] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [1536254.006905] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [1536254.006935] Process rsync (pid: 5250, threadinfo ffff88010c84e000, task ffff880021af9f40)
> [1536254.006968] Stack:
> [1536254.006979]  ffff88010c84fc50 ffff8801120dc0e0 0000000000000000 ffff88010c84fc50
> [1536254.007016]  ffff88010c84fae8 ffffffff810fd5a0 0000000000000001 ffff88010c84fad8
> [1536254.007054]  ffff88010c84fb08 0000000000000001 ffff88010c84fa18 ffffffff810baed3
> [1536254.007092] Call Trace:
> [1536254.007107]  [<ffffffff810fd5a0>] ext3_get_blocks_handle+0x64/0x916
> [1536254.007137]  [<ffffffff810baed3>] ? poll_freewait+0x41/0xa5
> [1536254.007163]  [<ffffffff8130c4fc>] ? tcp_poll+0x24/0x16b
> [1536254.007186]  [<ffffffff810bb66f>] ? do_select+0x4bd/0x4da
> [1536254.007210]  [<ffffffff810fdef1>] ext3_get_block+0x9f/0xdf
> [1536254.007237]  [<ffffffff810d4cee>] do_mpage_readpage+0x175/0x48e
> [1536254.007265]  [<ffffffff810299de>] ? local_bh_enable_ip+0x9/0xb
> [1536254.007290]  [<ffffffff810d5051>] mpage_readpage+0x4a/0x65
> [1536254.007314]  [<ffffffff810fde52>] ? ext3_get_blocks_handle+0x916/0x916
> [1536254.007342]  [<ffffffff8130e453>] ? tcp_sendmsg+0x693/0x785
> [1536254.007369]  [<ffffffff8107a693>] ? file_read_actor+0x9c/0x117
> [1536254.007396]  [<ffffffff810403af>] ? should_resched+0x9/0x28
> [1536254.007422]  [<ffffffff8135db84>] ? _cond_resched+0x9/0x1d
> [1536254.007445]  [<ffffffff810fb663>] ext3_readpage+0x13/0x15
> [1536254.007469]  [<ffffffff8107b2b8>] generic_file_aio_read+0x4a7/0x62c
> [1536254.007498]  [<ffffffff810ace6a>] do_sync_read+0xbd/0xfd
> [1536254.007521]  [<ffffffff810b801c>] ? getname_flags+0x29/0x1d0
> [1536254.007546]  [<ffffffff810acc5a>] ? fsnotify_modify+0x5a/0x62
> [1536254.007571]  [<ffffffff810ad567>] vfs_read+0xa4/0xeb
> [1536254.007594]  [<ffffffff810ad5f3>] sys_read+0x45/0x69
> [1536254.007617]  [<ffffffff8136011b>] sysenter_dispatch+0x7/0x1e
> [1536254.007642] Code: 5b 41 5c 5d c3 55 48 89 e5 41 55 49 89 cd 41 54 53 48 89 f3 41 50 48 8b 47 18 48 8b 8f b0 02 00 00 48 c1 e8 02 48 85 db 41 89 c4 <8b> b1 94 00 00 00 79 0c 48 c7 c2 3c 82 44 81 e9 b1 00 00 00 48 
> [1536254.007875] RIP  [<ffffffff810fbc32>] ext3_block_to_path.isra.40+0x26/0x11b
> [1536254.007908]  RSP <ffff88010c84f978>
> [1536254.007923] CR2: 0000000000000094
> [1536254.068173] ---[ end trace 87b810932dd8374d ]---
> 
> The 8 local patches are in drivers/media/rc/ati_remote.c, and the module
> wasn't even loaded.
> 
> Although the NFS modules are loaded, nothing is exported.
> Likewise, the battery module is purely accidental.
> There is one NFS mount, but it's quiescent.
> 
> CPU is a Core i3 530, on a Gigabyte motherbord, 4 GB RAM.  No ECC,
> unfortunately, so I can't rule out hardware bit rot.  Distribution is
> a fairly stock Debian/unstable.
  Hmm, is any mounting & unmounting happening during your backup? Because
the oops happened because sb->s_fs_info was NULL. Dissassembly shows:
  16:	48 8b 47 18          	mov    0x18(%rdi),%rax
store sb->s_blocksize into RAX
  1a:	48 8b 8f b0 02 00 00 	mov    0x2b0(%rdi),%rcx
store sb->s_fs_info into RCX
  21:	48 c1 e8 02          	shr    $0x2,%rax
This is division from EXT3_ADDR_PER_BLOCK() - RAX carries 1024 after
division so that looks correct.

  25:	48 85 db             	test   %rbx,%rbx
Now check passed i_block argument.

  28:	41 89 c4             	mov    %eax,%r12d
  2b:*	8b b1 94 00 00 00    	mov    0x94(%rcx),%esi     <-- trapping ins
Try to get RCX->s_addr_per_block_bits...

 sb->s_fs_info is set when a superblock is mounted and cleared when
superblock gets unmounted and otherwise it is never changed. So most likely
it was some memory corruption clearing that pointer (I wouldn't really
suspect HW here).

It somewhat looks like the issue described here:
http://lkml.indiana.edu/hypermail/linux/kernel/1202.3/00132.html

Although there we had f_path.dentry (completely different structure) being
NULL. But similarity here is that something stomped NULL over our existing
structure.

Linus, Jiri, that bug didn't get resolved, did it?

								Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

Re: Oops in ext3_block_to_path.isra.40+0x26/0x11b

[George Spelvin]

>  Thanks for report!

Thanks for looking at it.

>  Hmm, is any mounting & unmounting happening during your backup?

No, none.  It's a simple BackupPC via rsync.

Re: Oops in ext3_block_to_path.isra.40+0x26/0x11b

[Jiri Kosina]

On Fri, 16 Mar 2012, Jan Kara wrote:

> > CPU is a Core i3 530, on a Gigabyte motherbord, 4 GB RAM.  No ECC,
> > unfortunately, so I can't rule out hardware bit rot.  Distribution is
> > a fairly stock Debian/unstable.
>   Hmm, is any mounting & unmounting happening during your backup? Because
> the oops happened because sb->s_fs_info was NULL. Dissassembly shows:
>   16:	48 8b 47 18          	mov    0x18(%rdi),%rax
> store sb->s_blocksize into RAX
>   1a:	48 8b 8f b0 02 00 00 	mov    0x2b0(%rdi),%rcx
> store sb->s_fs_info into RCX
>   21:	48 c1 e8 02          	shr    $0x2,%rax
> This is division from EXT3_ADDR_PER_BLOCK() - RAX carries 1024 after
> division so that looks correct.
> 
>   25:	48 85 db             	test   %rbx,%rbx
> Now check passed i_block argument.
> 
>   28:	41 89 c4             	mov    %eax,%r12d
>   2b:*	8b b1 94 00 00 00    	mov    0x94(%rcx),%esi     <-- trapping ins
> Try to get RCX->s_addr_per_block_bits...
> 
>  sb->s_fs_info is set when a superblock is mounted and cleared when
> superblock gets unmounted and otherwise it is never changed. So most likely
> it was some memory corruption clearing that pointer (I wouldn't really
> suspect HW here).
> 
> It somewhat looks like the issue described here:
> http://lkml.indiana.edu/hypermail/linux/kernel/1202.3/00132.html
> 
> Although there we had f_path.dentry (completely different structure) being
> NULL. But similarity here is that something stomped NULL over our existing
> structure.
> 
> Linus, Jiri, that bug didn't get resolved, did it?

I am not aware of anything, but I have a question -- George, did the 
machine get suspended/resumed before this happened?

-- 
Jiri Kosina
SUSE Labs

Re: Oops in ext3_block_to_path.isra.40+0x26/0x11b

[Jan Kara]

On Fri 16-03-12 10:29:56, Jiri Kosina wrote:
> On Fri, 16 Mar 2012, Jan Kara wrote:
> 
> > > CPU is a Core i3 530, on a Gigabyte motherbord, 4 GB RAM.  No ECC,
> > > unfortunately, so I can't rule out hardware bit rot.  Distribution is
> > > a fairly stock Debian/unstable.
> >   Hmm, is any mounting & unmounting happening during your backup? Because
> > the oops happened because sb->s_fs_info was NULL. Dissassembly shows:
> >   16:	48 8b 47 18          	mov    0x18(%rdi),%rax
> > store sb->s_blocksize into RAX
> >   1a:	48 8b 8f b0 02 00 00 	mov    0x2b0(%rdi),%rcx
> > store sb->s_fs_info into RCX
> >   21:	48 c1 e8 02          	shr    $0x2,%rax
> > This is division from EXT3_ADDR_PER_BLOCK() - RAX carries 1024 after
> > division so that looks correct.
> > 
> >   25:	48 85 db             	test   %rbx,%rbx
> > Now check passed i_block argument.
> > 
> >   28:	41 89 c4             	mov    %eax,%r12d
> >   2b:*	8b b1 94 00 00 00    	mov    0x94(%rcx),%esi     <-- trapping ins
> > Try to get RCX->s_addr_per_block_bits...
> > 
> >  sb->s_fs_info is set when a superblock is mounted and cleared when
> > superblock gets unmounted and otherwise it is never changed. So most likely
> > it was some memory corruption clearing that pointer (I wouldn't really
> > suspect HW here).
> > 
> > It somewhat looks like the issue described here:
> > http://lkml.indiana.edu/hypermail/linux/kernel/1202.3/00132.html
> > 
> > Although there we had f_path.dentry (completely different structure) being
> > NULL. But similarity here is that something stomped NULL over our existing
> > structure.
> > 
> > Linus, Jiri, that bug didn't get resolved, did it?
> 
> I am not aware of anything, but I have a question -- George, did the 
> machine get suspended/resumed before this happened?
  And by any chance, do you use i915 driver? Because that one seems to
cause corruption - see: https://lkml.org/lkml/2012/3/9/217. I believe
Jiri's corruption is likely caused by that...

								Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

Re: Oops in ext3_block_to_path.isra.40+0x26/0x11b

[George Spelvin]

Jiri Kosina asked:
> I am not aware of anything, but I have a question -- George, did the 
> machine get suspended/resumed before this happened?

I'm pretty sure it didn't.  It's a desktop machine, and I don't ever
suspend it.  It had been up for a while, and /sys/power/state exists, and
*maybe* I played with it sometime since boot, but the backup runs nightly
and I *definitely* did not suspend it the day (or even several days)
before the oops.

(I tried to preserve the machine state, but processes started getting
stuck in the kernel a few hours after the report, so I had to reboot it.)

Jan Kara asked:
>   And by any chance, do you use i915 driver? Because that one seems to
> cause corruption - see: https://lkml.org/lkml/2012/3/9/217. I believe
> Jiri's corruption is likely caused by that...

Yes!  lspci -nn and abbreviated .config attached.  But, as mentioned, the machine
hasn't been suspended...

00:00.0 Host bridge [0600]: Intel Corporation Core Processor DRAM Controller [8086:0040] (rev 12)
00:02.0 VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0042] (rev 12)
00:16.0 Communication controller [0780]: Intel Corporation 5 Series/3400 Series Chipset HECI Controller [8086:3b64] (rev 06)
00:1a.0 USB controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller [8086:3b3b] (rev 06)
00:1a.1 USB controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller [8086:3b3e] (rev 06)
00:1a.2 USB controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller [8086:3b3f] (rev 06)
00:1a.7 USB controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b3c] (rev 06)
00:1b.0 Audio device [0403]: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio [8086:3b56] (rev 06)
00:1c.0 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 [8086:3b42] (rev 06)
00:1c.4 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 [8086:3b4a] (rev 06)
00:1c.5 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 [8086:3b4c] (rev 06)
00:1d.0 USB controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller [8086:3b36] (rev 06)
00:1d.1 USB controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller [8086:3b37] (rev 06)
00:1d.2 USB controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB Universal Host Controller [8086:3b38] (rev 06)
00:1d.7 USB controller [0c03]: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller [8086:3b34] (rev 06)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev a6)
00:1f.0 ISA bridge [0601]: Intel Corporation 5 Series Chipset LPC Interface Controller [8086:3b06] (rev 06)
00:1f.2 SATA controller [0106]: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller [8086:3b22] (rev 06)
00:1f.3 SMBus [0c05]: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller [8086:3b30] (rev 06)
01:00.0 Ethernet controller [0200]: Intel Corporation 82574L Gigabit Network Connection [8086:10d3]
02:00.0 IDE interface [0101]: JMicron Technology Corp. JMB368 IDE controller [197b:2368]
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 06)
04:02.0 CardBus bridge [0607]: Ricoh Co Ltd RL5c476 II [1180:0476] (rev 80)
04:02.1 CardBus bridge [0607]: Ricoh Co Ltd RL5c476 II [1180:0476] (rev 80)
04:07.0 FireWire (IEEE 1394) [0c00]: Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link) [104c:8024]
3f:00.0 Host bridge [0600]: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers [8086:2c61] (rev 02)
3f:00.1 Host bridge [0600]: Intel Corporation Core Processor QuickPath Architecture System Address Decoder [8086:2d01] (rev 02)
3f:02.0 Host bridge [0600]: Intel Corporation Core Processor QPI Link 0 [8086:2d10] (rev 02)
3f:02.1 Host bridge [0600]: Intel Corporation Core Processor QPI Physical 0 [8086:2d11] (rev 02)
3f:02.2 Host bridge [0600]: Intel Corporation Core Processor Reserved [8086:2d12] (rev 02)
3f:02.3 Host bridge [0600]: Intel Corporation Core Processor Reserved [8086:2d13] (rev 02)

CONFIG_64BIT=y
CONFIG_X86_64=y
CONFIG_X86=y
CONFIG_INSTRUCTION_DECODER=y
CONFIG_OUTPUT_FORMAT="elf64-x86-64"
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/x86_64_defconfig"
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_ARCH_CLOCKSOURCE_DATA=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_MMU=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_NEED_SG_DMA_LENGTH=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_TIME_VSYSCALL=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_DEFAULT_IDLE=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ZONE_DMA32=y
CONFIG_AUDIT_ARCH=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y
CONFIG_HAVE_INTEL_TXT=y
CONFIG_X86_64_SMP=y
CONFIG_X86_HT=y
CONFIG_ARCH_HWEIGHT_CFLAGS="-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11"
CONFIG_ARCH_CPU_PROBE_RELEASE=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_HAVE_IRQ_WORK=y
CONFIG_IRQ_WORK=y
CONFIG_EXPERIMENTAL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_BZIP2=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_KERNEL_GZIP=y
CONFIG_DEFAULT_HOSTNAME="(none)"
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_HAVE_GENERIC_HARDIRQS=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_HAVE_SPARSE_IRQ=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_SPARSE_IRQ=y
CONFIG_TREE_RCU=y
CONFIG_RCU_FANOUT=64
CONFIG_IKCONFIG=y
CONFIG_LOG_BUF_SHIFT=16
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_CGROUPS=y
CONFIG_CGROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
CONFIG_BLK_CGROUP=y
CONFIG_NAMESPACES=y
CONFIG_SCHED_AUTOGROUP=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_SYSCTL=y
CONFIG_ANON_INODES=y
CONFIG_UID16=y
CONFIG_KALLSYMS=y
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_PCSPKR_PLATFORM=y
CONFIG_HAVE_PCSPKR_PLATFORM=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_AIO=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_PERF_EVENTS=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_PCI_QUIRKS=y
CONFIG_SLUB_DEBUG=y
CONFIG_SLUB=y
CONFIG_HAVE_OPROFILE=y
CONFIG_OPROFILE_NMI_TIMER=y
CONFIG_JUMP_LABEL=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_USE_GENERIC_SMP_HELPERS=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_HW_BREAKPOINT=y
CONFIG_HAVE_MIXED_BREAKPOINTS_REGS=y
CONFIG_HAVE_USER_RETURN_NOTIFIER=y
CONFIG_HAVE_PERF_EVENTS_NMI=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG=y
CONFIG_HAVE_ALIGNED_STRUCT_PAGE=y
CONFIG_HAVE_CMPXCHG_LOCAL=y
CONFIG_HAVE_CMPXCHG_DOUBLE=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_STOP_MACHINE=y
CONFIG_BLOCK=y
CONFIG_MSDOS_PARTITION=y
CONFIG_BLOCK_COMPAT=y
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_CFQ_GROUP_IOSCHED=y
CONFIG_DEFAULT_CFQ=y
CONFIG_DEFAULT_IOSCHED="cfq"
CONFIG_INLINE_SPIN_UNLOCK=y
CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
CONFIG_INLINE_READ_UNLOCK=y
CONFIG_INLINE_READ_UNLOCK_IRQ=y
CONFIG_INLINE_WRITE_UNLOCK=y
CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_FREEZER=y
CONFIG_ZONE_DMA=y
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y
CONFIG_SMP=y
CONFIG_X86_MPPARSE=y
CONFIG_X86_SUPPORTS_MEMORY_FAILURE=y
CONFIG_SCHED_OMIT_FRAME_POINTER=y
CONFIG_NO_BOOTMEM=y
CONFIG_GENERIC_CPU=y
CONFIG_X86_INTERNODE_CACHE_SHIFT=6
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_XADD=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_TSC=y
CONFIG_X86_CMPXCHG64=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=64
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_CPU_SUP_INTEL=y
CONFIG_CPU_SUP_AMD=y
CONFIG_CPU_SUP_CENTAUR=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
CONFIG_GART_IOMMU=y
CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
CONFIG_NR_CPUS=4
CONFIG_SCHED_SMT=y
CONFIG_SCHED_MC=y
CONFIG_IRQ_TIME_ACCOUNTING=y
CONFIG_PREEMPT_VOLUNTARY=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
CONFIG_X86_MCE_THRESHOLD=y
CONFIG_X86_THERMAL_VECTOR=y
CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
CONFIG_DIRECT_GBPAGES=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_DEFAULT=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_ARCH_PROC_KCORE_TEXT=y
CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_SPARSEMEM_MANUAL=y
CONFIG_SPARSEMEM=y
CONFIG_HAVE_MEMORY_PRESENT=y
CONFIG_SPARSEMEM_EXTREME=y
CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
CONFIG_SPARSEMEM_ALLOC_MEM_MAP_TOGETHER=y
CONFIG_SPARSEMEM_VMEMMAP=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
CONFIG_ARCH_DISCARD_MEMBLOCK=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_COMPACTION=y
CONFIG_MIGRATION=y
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_DEFAULT_MMAP_MIN_ADDR=65536
CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
CONFIG_X86_CHECK_BIOS_CORRUPTION=y
CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK=y
CONFIG_X86_RESERVE_LOW=4
CONFIG_MTRR=y
CONFIG_X86_PAT=y
CONFIG_ARCH_USES_PG_UNCACHED=y
CONFIG_ARCH_RANDOM=y
CONFIG_SECCOMP=y
CONFIG_HZ_300=y
CONFIG_HZ=300
CONFIG_SCHED_HRTICK=y
CONFIG_PHYSICAL_START=0x1000000
CONFIG_PHYSICAL_ALIGN=0x1000000
CONFIG_HOTPLUG_CPU=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
CONFIG_ARCH_HIBERNATION_HEADER=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_HIBERNATE_CALLBACKS=y
CONFIG_HIBERNATION=y
CONFIG_PM_STD_PARTITION="/dev/hda1"
CONFIG_PM_SLEEP=y
CONFIG_PM_SLEEP_SMP=y
CONFIG_PM=y
CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_PROCFS=y
CONFIG_ACPI_PROCFS_POWER=y
CONFIG_ACPI_PROC_EVENT=y
CONFIG_ACPI_AC=m
CONFIG_ACPI_BATTERY=m
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=y
CONFIG_ACPI_FAN=m
CONFIG_ACPI_PROCESSOR=m
CONFIG_ACPI_HOTPLUG_CPU=y
CONFIG_ACPI_THERMAL=m
CONFIG_ACPI_CUSTOM_DSDT_FILE=""
CONFIG_ACPI_BLACKLIST_YEAR=0
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=m
CONFIG_ACPI_SBS=m
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCIEPORTBUS=y
CONFIG_PCIEAER=y
CONFIG_PCIEASPM=y
CONFIG_ARCH_SUPPORTS_MSI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_IOAPIC=y
CONFIG_PCI_LABEL=y
CONFIG_ISA_DMA_API=y
CONFIG_AMD_NB=y
CONFIG_PCCARD=m
CONFIG_PCMCIA=m
CONFIG_PCMCIA_LOAD_CIS=y
CONFIG_CARDBUS=y
CONFIG_YENTA=m
CONFIG_YENTA_O2=y
CONFIG_YENTA_RICOH=y
CONFIG_YENTA_TI=y
CONFIG_YENTA_ENE_TUNE=y
CONFIG_YENTA_TOSHIBA=y
CONFIG_PD6729=m
CONFIG_I82092=m
CONFIG_PCCARD_NONSTATIC=y
CONFIG_BINFMT_ELF=y
CONFIG_COMPAT_BINFMT_ELF=y
CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
CONFIG_IA32_EMULATION=y
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_SYSVIPC_COMPAT=y
CONFIG_KEYS_COMPAT=y
CONFIG_HAVE_TEXT_POKE_SMP=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_UNIX_DIAG=m
CONFIG_XFRM=y
CONFIG_XFRM_USER=m
CONFIG_XFRM_IPCOMP=m
CONFIG_NET_KEY=m
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_SYN_COOKIES=y
CONFIG_INET_AH=m
CONFIG_INET_ESP=m
CONFIG_INET_IPCOMP=m
CONFIG_INET_XFRM_TUNNEL=m
CONFIG_INET_TUNNEL=m
CONFIG_INET_XFRM_MODE_TRANSPORT=m
CONFIG_INET_XFRM_MODE_TUNNEL=m
CONFIG_INET_XFRM_MODE_BEET=m
CONFIG_INET_LRO=y
CONFIG_INET_DIAG=m
CONFIG_INET_TCP_DIAG=m
CONFIG_INET_UDP_DIAG=m
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
CONFIG_IP_SCTP=m
CONFIG_SCTP_HMAC_MD5=y
CONFIG_DNS_RESOLVER=y
CONFIG_RPS=y
CONFIG_RFS_ACCEL=y
CONFIG_XPS=y
CONFIG_BQL=y
CONFIG_HAVE_BPF_JIT=y
CONFIG_WIRELESS=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE=""
CONFIG_PNP=y
CONFIG_PNP_DEBUG_MESSAGES=y
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
CONFIG_BLK_DEV_FD=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_CDROM_PKTCDVD=y
CONFIG_CDROM_PKTCDVD_BUFFERS=8
CONFIG_EEPROM_LEGACY=y
CONFIG_HAVE_IDE=y
CONFIG_SCSI_MOD=y
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
CONFIG_BLK_DEV_SD=y
CONFIG_BLK_DEV_SR=y
CONFIG_CHR_DEV_SG=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_WAIT_SCAN=m
CONFIG_ATA=y
CONFIG_ATA_VERBOSE_ERROR=y
CONFIG_ATA_ACPI=y
CONFIG_SATA_AHCI=y
CONFIG_ATA_SFF=y
CONFIG_ATA_BMDMA=y
CONFIG_PATA_JMICRON=y
CONFIG_NETDEVICES=y
CONFIG_NET_CORE=y
CONFIG_MII=y
CONFIG_ETHERNET=y
CONFIG_NET_VENDOR_INTEL=y
CONFIG_E1000E=y
CONFIG_NET_VENDOR_REALTEK=y
CONFIG_R8169=m
CONFIG_PHYLIB=y
CONFIG_MARVELL_PHY=m
CONFIG_DAVICOM_PHY=m
CONFIG_QSEMI_PHY=m
CONFIG_LXT_PHY=m
CONFIG_CICADA_PHY=m
CONFIG_VITESSE_PHY=m
CONFIG_SMSC_PHY=m
CONFIG_BROADCOM_PHY=m
CONFIG_ICPLUS_PHY=m
CONFIG_REALTEK_PHY=m
CONFIG_NATIONAL_PHY=m
CONFIG_STE10XP=m
CONFIG_LSI_ET1011C_PHY=m
CONFIG_MICREL_PHY=m
CONFIG_MDIO_BITBANG=m
CONFIG_INPUT=y
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1920
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=1080
CONFIG_INPUT_EVDEV=y
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=m
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_HW_CONSOLE=y
CONFIG_UNIX98_PTYS=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_PNP=y
CONFIG_SERIAL_8250_NR_UARTS=32
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_DETECT_IRQ=y
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_NVRAM=m
CONFIG_HPET=y
CONFIG_HPET_MMAP=y
CONFIG_DEVPORT=y
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_COMPAT=y
CONFIG_I2C_CHARDEV=y
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_I801=y
CONFIG_I2C_SCMI=m
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
CONFIG_POWER_SUPPLY=y
CONFIG_HWMON=y
CONFIG_HWMON_VID=y
CONFIG_SENSORS_IT87=y
CONFIG_THERMAL=y
CONFIG_THERMAL_HWMON=y
CONFIG_WATCHDOG=y
CONFIG_SOFT_WATCHDOG=m
CONFIG_ACQUIRE_WDT=m
CONFIG_ADVANTECH_WDT=m
CONFIG_ALIM1535_WDT=m
CONFIG_ALIM7101_WDT=m
CONFIG_F71808E_WDT=m
CONFIG_SP5100_TCO=m
CONFIG_SC520_WDT=m
CONFIG_EUROTECH_WDT=m
CONFIG_IB700_WDT=m
CONFIG_IBMASR=m
CONFIG_WAFER_WDT=m
CONFIG_I6300ESB_WDT=m
CONFIG_ITCO_WDT=m
CONFIG_IT8712F_WDT=m
CONFIG_IT87_WDT=m
CONFIG_HP_WATCHDOG=m
CONFIG_SC1200_WDT=m
CONFIG_PC87413_WDT=m
CONFIG_NV_TCO=m
CONFIG_60XX_WDT=m
CONFIG_SBC8360_WDT=m
CONFIG_CPU5_WDT=m
CONFIG_SMSC37B787_WDT=m
CONFIG_W83627HF_WDT=m
CONFIG_W83697HF_WDT=m
CONFIG_W83697UG_WDT=m
CONFIG_W83877F_WDT=m
CONFIG_W83977F_WDT=m
CONFIG_MACHZ_WDT=m
CONFIG_SBC_EPX_C3_WATCHDOG=m
CONFIG_PCIPCWATCHDOG=m
CONFIG_WDTPCI=m
CONFIG_USBPCWATCHDOG=m
CONFIG_SSB_POSSIBLE=y
CONFIG_BCMA_POSSIBLE=y
CONFIG_MEDIA_SUPPORT=y
CONFIG_VIDEO_DEV=m
CONFIG_VIDEO_V4L2_COMMON=m
CONFIG_VIDEO_MEDIA=m
CONFIG_RC_CORE=m
CONFIG_LIRC=m
CONFIG_RC_MAP=m
CONFIG_IR_SANYO_DECODER=m
CONFIG_RC_ATI_REMOTE=m
CONFIG_MEDIA_TUNER=m
CONFIG_MEDIA_TUNER_SIMPLE=m
CONFIG_MEDIA_TUNER_TDA8290=m
CONFIG_MEDIA_TUNER_TDA827X=m
CONFIG_MEDIA_TUNER_TDA18271=m
CONFIG_MEDIA_TUNER_TDA9887=m
CONFIG_MEDIA_TUNER_TEA5761=m
CONFIG_MEDIA_TUNER_TEA5767=m
CONFIG_MEDIA_TUNER_MT20XX=m
CONFIG_MEDIA_TUNER_XC2028=m
CONFIG_MEDIA_TUNER_XC5000=m
CONFIG_MEDIA_TUNER_XC4000=m
CONFIG_MEDIA_TUNER_MC44S803=m
CONFIG_VIDEO_V4L2=m
CONFIG_AGP=y
CONFIG_AGP_INTEL=y
CONFIG_VGA_ARB=y
CONFIG_VGA_ARB_MAX_GPUS=2
CONFIG_DRM=y
CONFIG_DRM_KMS_HELPER=y
CONFIG_DRM_I915=y
CONFIG_DRM_I915_KMS=y
CONFIG_VIDEO_OUTPUT_CONTROL=y
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_GENERIC=y
CONFIG_VGA_CONSOLE=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_SOUND=y
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_SEQUENCER=m
CONFIG_SND_SEQ_DUMMY=m
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
CONFIG_SND_PCM_OSS_PLUGINS=y
CONFIG_SND_SEQUENCER_OSS=y
CONFIG_SND_HRTIMER=y
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_VERBOSE_PROCFS=y
CONFIG_SND_VMASTER=y
CONFIG_SND_KCTL_JACK=y
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_PCI=y
CONFIG_SND_HDA_INTEL=y
CONFIG_SND_HDA_PREALLOC_SIZE=256
CONFIG_SND_HDA_CODEC_REALTEK=y
CONFIG_SND_HDA_GENERIC=y
CONFIG_SND_HDA_POWER_SAVE=y
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=5
CONFIG_HID_SUPPORT=y
CONFIG_HID=y
CONFIG_HID_BATTERY_STRENGTH=y
CONFIG_HIDRAW=y
CONFIG_USB_HID=y
CONFIG_USB_HIDDEV=y
CONFIG_HID_A4TECH=y
CONFIG_HID_APPLE=y
CONFIG_HID_BELKIN=y
CONFIG_HID_CHERRY=y
CONFIG_HID_CHICONY=y
CONFIG_HID_CYPRESS=y
CONFIG_HID_DRAGONRISE=y
CONFIG_HID_EZKEY=y
CONFIG_HID_KYE=y
CONFIG_HID_GYRATION=y
CONFIG_HID_TWINHAN=y
CONFIG_HID_KENSINGTON=y
CONFIG_HID_LOGITECH=y
CONFIG_HID_LOGITECH_DJ=m
CONFIG_HID_MICROSOFT=y
CONFIG_HID_MONTEREY=y
CONFIG_HID_NTRIG=y
CONFIG_HID_ORTEK=y
CONFIG_HID_PANTHERLORD=y
CONFIG_HID_PETALYNX=y
CONFIG_HID_SAMSUNG=y
CONFIG_HID_SONY=y
CONFIG_HID_SUNPLUS=y
CONFIG_HID_GREENASIA=y
CONFIG_HID_SMARTJOYPLUS=y
CONFIG_HID_TOPSEED=y
CONFIG_HID_THRUSTMASTER=y
CONFIG_HID_ZEROPLUS=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_COMMON=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB_ARCH_HAS_XHCI=y
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_DEVICEFS=y
CONFIG_USB_DEVICE_CLASS=y
CONFIG_USB_MON=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_EHCI_TT_NEWSCHED=y
CONFIG_USB_UHCI_HCD=y
CONFIG_USB_ACM=m
CONFIG_USB_PRINTER=m
CONFIG_USB_WDM=m
CONFIG_USB_STORAGE=m
CONFIG_USB_UAS=m
CONFIG_USB_LIBUSUAL=y
CONFIG_USB_MDC800=m
CONFIG_USB_SERIAL=m
CONFIG_USB_EZUSB=y
CONFIG_USB_SERIAL_GENERIC=y
CONFIG_USB_SERIAL_AIRCABLE=m
CONFIG_USB_SERIAL_ARK3116=m
CONFIG_USB_SERIAL_BELKIN=m
CONFIG_USB_SERIAL_CH341=m
CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
CONFIG_USB_SERIAL_CYPRESS_M8=m
CONFIG_USB_SERIAL_EMPEG=m
CONFIG_USB_SERIAL_FTDI_SIO=m
CONFIG_USB_SERIAL_FUNSOFT=m
CONFIG_USB_SERIAL_VISOR=m
CONFIG_USB_SERIAL_IPAQ=m
CONFIG_USB_SERIAL_IR=m
CONFIG_USB_SERIAL_EDGEPORT=m
CONFIG_USB_SERIAL_EDGEPORT_TI=m
CONFIG_USB_SERIAL_GARMIN=m
CONFIG_USB_SERIAL_IPW=m
CONFIG_USB_SERIAL_IUU=m
CONFIG_USB_SERIAL_KEYSPAN_PDA=m
CONFIG_USB_SERIAL_KEYSPAN=m
CONFIG_USB_SERIAL_KLSI=m
CONFIG_USB_SERIAL_KOBIL_SCT=m
CONFIG_USB_SERIAL_MCT_U232=m
CONFIG_USB_SERIAL_MOS7720=m
CONFIG_USB_SERIAL_MOS7840=m
CONFIG_USB_SERIAL_MOTOROLA=m
CONFIG_USB_SERIAL_NAVMAN=m
CONFIG_USB_SERIAL_PL2303=m
CONFIG_USB_SERIAL_OTI6858=m
CONFIG_USB_SERIAL_SPCP8X5=m
CONFIG_USB_SERIAL_HP4X=m
CONFIG_USB_SERIAL_SAFE=m
CONFIG_USB_SERIAL_SIERRAWIRELESS=m
CONFIG_USB_SERIAL_CYBERJACK=m
CONFIG_USB_SERIAL_XIRCOM=m
CONFIG_USB_SERIAL_WWAN=m
CONFIG_USB_SERIAL_OPTION=m
CONFIG_USB_SERIAL_OMNINET=m
CONFIG_USB_SERIAL_DEBUG=m
CONFIG_USB_ADUTUX=m
CONFIG_USB_RIO500=m
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
CONFIG_USB_LED=m
CONFIG_USB_CYPRESS_CY7C63=m
CONFIG_USB_CYTHERM=m
CONFIG_USB_IDMOUSE=m
CONFIG_USB_FTDI_ELAN=m
CONFIG_USB_APPLEDISPLAY=m
CONFIG_USB_SISUSBVGA=m
CONFIG_USB_SISUSBVGA_CON=y
CONFIG_USB_LD=m
CONFIG_USB_TRANCEVIBRATOR=m
CONFIG_USB_IOWARRIOR=m
CONFIG_USB_TEST=m
CONFIG_USB_ISIGHTFW=m
CONFIG_RTC_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
CONFIG_RTC_DRV_DS1307=m
CONFIG_RTC_DRV_DS1374=m
CONFIG_RTC_DRV_DS1672=m
CONFIG_RTC_DRV_MAX6900=m
CONFIG_RTC_DRV_RS5C372=m
CONFIG_RTC_DRV_ISL1208=m
CONFIG_RTC_DRV_X1205=m
CONFIG_RTC_DRV_PCF8563=m
CONFIG_RTC_DRV_PCF8583=m
CONFIG_RTC_DRV_M41T80=m
CONFIG_RTC_DRV_S35390A=m
CONFIG_RTC_DRV_FM3130=m
CONFIG_RTC_DRV_CMOS=y
CONFIG_RTC_DRV_DS1511=m
CONFIG_RTC_DRV_DS1553=m
CONFIG_RTC_DRV_DS1742=m
CONFIG_RTC_DRV_STK17TA8=m
CONFIG_RTC_DRV_M48T86=m
CONFIG_RTC_DRV_M48T59=m
CONFIG_RTC_DRV_V3020=m
CONFIG_STAGING=y
CONFIG_X86_PLATFORM_DEVICES=y
CONFIG_INTEL_IPS=y
CONFIG_CLKEVT_I8253=y
CONFIG_I8253_LOCK=y
CONFIG_CLKBLD_I8253=y
CONFIG_IOMMU_API=y
CONFIG_IOMMU_SUPPORT=y
CONFIG_DMAR_TABLE=y
CONFIG_INTEL_IOMMU=y
CONFIG_INTEL_IOMMU_DEFAULT_ON=y
CONFIG_INTEL_IOMMU_FLOPPY_WA=y
CONFIG_IRQ_REMAP=y
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_DMIID=y
CONFIG_EXT3_FS=y
CONFIG_EXT3_DEFAULTS_TO_ORDERED=y
CONFIG_EXT4_FS=m
CONFIG_EXT4_USE_FOR_EXT23=y
CONFIG_JBD=y
CONFIG_JBD2=m
CONFIG_FS_POSIX_ACL=y
CONFIG_EXPORTFS=m
CONFIG_FILE_LOCKING=y
CONFIG_FSNOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_FANOTIFY=y
CONFIG_FUSE_FS=m
CONFIG_GENERIC_ACL=y
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=m
CONFIG_UDF_NLS=y
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="utf8"
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_TMPFS_POSIX_ACL=y
CONFIG_TMPFS_XATTR=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_CONFIGFS_FS=m
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=m
CONFIG_NFS_V3=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
CONFIG_NFS_V4_1=y
CONFIG_PNFS_FILE_LAYOUT=m
CONFIG_NFS_USE_KERNEL_DNS=y
CONFIG_NFSD=m
CONFIG_NFSD_V2_ACL=y
CONFIG_NFSD_V3=y
CONFIG_NFSD_V3_ACL=y
CONFIG_NFSD_V4=y
CONFIG_LOCKD=m
CONFIG_LOCKD_V4=y
CONFIG_NFS_ACL_SUPPORT=m
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=m
CONFIG_SUNRPC_GSS=m
CONFIG_SUNRPC_BACKCHANNEL=y
CONFIG_RPCSEC_GSS_KRB5=m
CONFIG_CIFS=m
CONFIG_CIFS_WEAK_PW_HASH=y
CONFIG_CIFS_UPCALL=y
CONFIG_CIFS_XATTR=y
CONFIG_CIFS_POSIX=y
CONFIG_CIFS_DFS_UPCALL=y
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="utf8"
CONFIG_NLS_CODEPAGE_437=m
CONFIG_NLS_CODEPAGE_737=m
CONFIG_NLS_CODEPAGE_775=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_CODEPAGE_852=m
CONFIG_NLS_CODEPAGE_855=m
CONFIG_NLS_CODEPAGE_857=m
CONFIG_NLS_CODEPAGE_860=m
CONFIG_NLS_CODEPAGE_861=m
CONFIG_NLS_CODEPAGE_862=m
CONFIG_NLS_CODEPAGE_863=m
CONFIG_NLS_CODEPAGE_864=m
CONFIG_NLS_CODEPAGE_865=m
CONFIG_NLS_CODEPAGE_866=m
CONFIG_NLS_CODEPAGE_869=m
CONFIG_NLS_CODEPAGE_936=m
CONFIG_NLS_CODEPAGE_950=m
CONFIG_NLS_CODEPAGE_932=m
CONFIG_NLS_CODEPAGE_949=m
CONFIG_NLS_CODEPAGE_874=m
CONFIG_NLS_ISO8859_8=m
CONFIG_NLS_CODEPAGE_1250=m
CONFIG_NLS_CODEPAGE_1251=m
CONFIG_NLS_ASCII=m
CONFIG_NLS_ISO8859_1=m
CONFIG_NLS_ISO8859_2=m
CONFIG_NLS_ISO8859_3=m
CONFIG_NLS_ISO8859_4=m
CONFIG_NLS_ISO8859_5=m
CONFIG_NLS_ISO8859_6=m
CONFIG_NLS_ISO8859_7=m
CONFIG_NLS_ISO8859_9=m
CONFIG_NLS_ISO8859_13=m
CONFIG_NLS_ISO8859_14=m
CONFIG_NLS_ISO8859_15=m
CONFIG_NLS_KOI8_R=m
CONFIG_NLS_KOI8_U=m
CONFIG_NLS_UTF8=m
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4
CONFIG_ENABLE_WARN_DEPRECATED=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
CONFIG_STRIP_ASM_SYMS=y
CONFIG_DEBUG_FS=y
CONFIG_DEBUG_KERNEL=y
CONFIG_LOCKUP_DETECTOR=y
CONFIG_HARDLOCKUP_DETECTOR=y
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC_VALUE=0
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
CONFIG_DETECT_HUNG_TASK=y
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
CONFIG_BOOTPARAM_HUNG_TASK_PANIC_VALUE=0
CONFIG_SCHED_DEBUG=y
CONFIG_TIMER_STATS=y
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_ARCH_WANT_FRAME_POINTERS=y
CONFIG_FRAME_POINTER=y
CONFIG_RCU_CPU_STALL_TIMEOUT=60
CONFIG_SYSCTL_SYSCALL_CHECK=y
CONFIG_USER_STACKTRACE_SUPPORT=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_GRAPH_FP_TEST=y
CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_TRACING_SUPPORT=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_HAVE_ARCH_KMEMCHECK=y
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_EARLY_PRINTK=y
CONFIG_HAVE_MMIOTRACE_SUPPORT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
CONFIG_IO_DELAY_NONE=y
CONFIG_DEFAULT_IO_DELAY_TYPE=3
CONFIG_OPTIMIZE_INLINING=y
CONFIG_KEYS=y
CONFIG_DEFAULT_SECURITY_DAC=y
CONFIG_DEFAULT_SECURITY=""
CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=m
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_BLKCIPHER=m
CONFIG_CRYPTO_BLKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=m
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_PCOMP2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
CONFIG_CRYPTO_GF128MUL=m
CONFIG_CRYPTO_NULL=m
CONFIG_CRYPTO_WORKQUEUE=y
CONFIG_CRYPTO_CRYPTD=m
CONFIG_CRYPTO_AUTHENC=m
CONFIG_CRYPTO_TEST=m
CONFIG_CRYPTO_CCM=m
CONFIG_CRYPTO_GCM=m
CONFIG_CRYPTO_SEQIV=m
CONFIG_CRYPTO_CBC=m
CONFIG_CRYPTO_CTR=m
CONFIG_CRYPTO_CTS=m
CONFIG_CRYPTO_ECB=m
CONFIG_CRYPTO_LRW=m
CONFIG_CRYPTO_PCBC=m
CONFIG_CRYPTO_XTS=m
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_XCBC=m
CONFIG_CRYPTO_CRC32C=m
CONFIG_CRYPTO_CRC32C_INTEL=m
CONFIG_CRYPTO_GHASH=m
CONFIG_CRYPTO_MD4=m
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_SHA1=m
CONFIG_CRYPTO_SHA1_SSSE3=m
CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_SHA512=m
CONFIG_CRYPTO_TGR192=m
CONFIG_CRYPTO_WP512=m
CONFIG_CRYPTO_AES=m
CONFIG_CRYPTO_AES_X86_64=m
CONFIG_CRYPTO_AES_NI_INTEL=m
CONFIG_CRYPTO_ANUBIS=m
CONFIG_CRYPTO_ARC4=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_BLOWFISH_COMMON=m
CONFIG_CRYPTO_BLOWFISH_X86_64=m
CONFIG_CRYPTO_CAMELLIA=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_DES=m
CONFIG_CRYPTO_FCRYPT=m
CONFIG_CRYPTO_KHAZAD=m
CONFIG_CRYPTO_SALSA20=m
CONFIG_CRYPTO_SALSA20_X86_64=m
CONFIG_CRYPTO_SEED=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_SERPENT_SSE2_X86_64=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
CONFIG_CRYPTO_TWOFISH_X86_64=m
CONFIG_CRYPTO_TWOFISH_X86_64_3WAY=m
CONFIG_CRYPTO_DEFLATE=m
CONFIG_CRYPTO_LZO=m
CONFIG_HAVE_KVM=y
CONFIG_BITREVERSE=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_IOMAP=y
CONFIG_CRC_CCITT=m
CONFIG_CRC16=m
CONFIG_CRC_T10DIF=m
CONFIG_CRC_ITU_T=m
CONFIG_CRC32=y
CONFIG_CRC7=m
CONFIG_LIBCRC32C=m
CONFIG_ZLIB_INFLATE=m
CONFIG_ZLIB_DEFLATE=m
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
CONFIG_CHECK_SIGNATURE=y
CONFIG_CPU_RMAP=y
CONFIG_DQL=y
CONFIG_NLATTR=y

Re: Oops in ext3_block_to_path.isra.40+0x26/0x11b

[Jiri Kosina]

On Fri, 16 Mar 2012, George Spelvin wrote:

> > I am not aware of anything, but I have a question -- George, did the 
> > machine get suspended/resumed before this happened?
> 
> I'm pretty sure it didn't.  It's a desktop machine, and I don't ever
> suspend it.  It had been up for a while, and /sys/power/state exists, and
> *maybe* I played with it sometime since boot, but the backup runs nightly
> and I *definitely* did not suspend it the day (or even several days)
> before the oops.
> 
> (I tried to preserve the machine state, but processes started getting
> stuck in the kernel a few hours after the report, so I had to reboot it.)
> 
> Jan Kara asked:
> >   And by any chance, do you use i915 driver? Because that one seems to
> > cause corruption - see: https://lkml.org/lkml/2012/3/9/217. I believe
> > Jiri's corruption is likely caused by that...
> 
> Yes!  lspci -nn and abbreviated .config attached.  But, as mentioned, the machine
> hasn't been suspended...

So it might be the culprit. As the reason of the corruption is not yet 
understood, it might be that suspend/resume cycle is not necessary 
pre-requisite for this to trigger, it might just make it more likely.

And the corruption is observed to be indeed several writes of 0x00000000, 
so it could easily lead to null pointer dereferences all over the place.

Are you able to reproduce the problem if you turn kernel modesetting off?

-- 
Jiri Kosina
SUSE Labs

Re: Oops in ext3_block_to_path.isra.40+0x26/0x11b

[George Spelvin]

> So it might be the culprit. As the reason of the corruption is not yet 
> understood, it might be that suspend/resume cycle is not necessary 
> pre-requisite for this to trigger, it might just make it more likely.

It might just be virtual console switching.  Normally I live in X,
but I might have switched to a text console for some reason (I don't
specifically remember doing this, but it's very plausible for me).

> And the corruption is observed to be indeed several writes of 0x00000000, 
> so it could easily lead to null pointer dereferences all over the place.
> 
> Are you able to reproduce the problem if you turn kernel modesetting off?

Unfortunately, this is the only time it's happened to me with kernel
modesetting *on*.  Would repeated checksums of a kernel tree be a good
way to detect random memory stomping?

Re: Oops in ext3_block_to_path.isra.40+0x26/0x11b

[Linus Torvalds]

On Fri, Mar 16, 2012 at 2:04 PM, George Spelvin <linux@horizon.com> wrote:
>
> Unfortunately, this is the only time it's happened to me with kernel
> modesetting *on*.  Would repeated checksums of a kernel tree be a good
> way to detect random memory stomping?

Yes, doing filesystem checksums tends to be a good way to find memory
corruption, since a lot of memory tends to be caches.

Another approach is to have a stupid program that allocates an array
of say about half the physical memory, and writes some nicely
recognizable pattern to it. Then, every minute or two, re-check the
pattern.

The advantage of the pattern approach is that it makes it possible to
show things like "these X bytes at offset Y in the page changed",
which can give hints about the source of corruption. The full virtual
address is obviously useless, but the "offset within page" can be
quite useful for figuring out corruption patterns even if you can't
necessarily see which physical page it actually is.

                     Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html