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testing dm-cache #2

Closed
sandrain opened this Issue · 4 comments

3 participants

@sandrain

Hi, thanks for nice works.

I'm trying dm-cache 3.0.8. I like to configure it like

/dev/sda (ssd) : cache device
/dev/sdd (hdd): source device

Disk /dev/sda: 60.0 GB, 60022480896 bytes
255 heads, 63 sectors/track, 7297 cylinders, total 117231408 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/sda doesn't contain a valid partition table

Disk /dev/sdd: 500.1 GB, 500107862016 bytes
81 heads, 63 sectors/track, 191411 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xd091d92e

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1            2048   976773167   488385560   83  Linux

And I tried the following command to initialize it:
(I think it would be better if I don't have to calculate the number of blocks in cache dev. I just like to whole ssd as a cache)

echo 0 976773168 cache /dev/sdd /dev/sda 0 8 7864320 1024 0 | dmsetup create cache1

where,
0 976773168 : whole sector range of /dev/sdd
0 8: block size = 512 * 8 = 4k
7864320: 30G cache space = 3010241024*1024/4096 blocks (It's around half of its capacity)

and it fails.

My machine is

  • i686 Intel(R) Pentium(R) D CPU 3.00GHz GenuineIntel GNU/Linux
  • 1.5 GB RAM
  • Gentoo Linux, kernel-3.2.2 (vanillia)
[ 1814.716320] ------------[ cut here ]------------
[ 1814.716337] WARNING: at fs/block_dev.c:937 bd_unlink_disk_holder+0x1d6/0x1f0()
[ 1814.716344] Hardware name: OptiPlex GX620               
[ 1814.716349] Modules linked in: dm_cache(O)
[ 1814.716363] Pid: 3069, comm: dmsetup Tainted: G           O 3.2.2 #1
[ 1814.716373] Call Trace:
[ 1814.716387]  [] warn_slowpath_common+0xdc/0x160
[ 1814.716397]  [] ? bd_unlink_disk_holder+0x1d6/0x1f0
[ 1814.716406]  [] ? bd_unlink_disk_holder+0x1d6/0x1f0
[ 1814.716416]  [] warn_slowpath_null+0x3e/0x50
[ 1814.716425]  [] bd_unlink_disk_holder+0x1d6/0x1f0
[ 1814.716437]  [] close_dev+0x4d/0x90
[ 1814.716445]  [] dm_put_device+0x57/0xa0
[ 1814.716457]  [] cache_ctr+0x462/0x1840 [dm_cache]
[ 1814.716469]  [] ? _copy_from_user+0x45/0x90
[ 1814.716484]  [] ? _raw_write_unlock+0x43/0xa0
[ 1814.716495]  [] ? realloc_argv+0x3f/0xc0
[ 1814.716503]  [] ? realloc_argv+0x79/0xc0
[ 1814.716513]  [] ? realloc_argv+0x79/0xc0
[ 1814.716524]  [] ? dm_split_args+0x67/0x250
[ 1814.716536]  [] dm_table_add_target+0x176/0x630
[ 1814.716546]  [] ? alloc_targets+0x8b/0x120
[ 1814.716559]  [] table_load+0x18c/0x670
[ 1814.716571]  [] dm_ctl_ioctl+0x1cd/0x480
[ 1814.716582]  [] ? table_clear+0x100/0x100
[ 1814.716591]  [] ? copy_params+0x220/0x220
[ 1814.716601]  [] do_vfs_ioctl+0xa4/0xa80
[ 1814.716610]  [] ? sub_preempt_count+0x7d/0xa0
[ 1814.716620]  [] ? vfsmount_lock_local_unlock+0x58/0xb0
[ 1814.716629]  [] ? mntput_no_expire+0x59/0x290
[ 1814.716640]  [] ? sys_semctl+0xe3/0x140
[ 1814.716652]  [] sys_ioctl+0x76/0xd0
[ 1814.716662]  [] sysenter_do_call+0x12/0x2b
[ 1814.716673]  [] ? do_one_pass+0x4f9/0x8e0
[ 1814.716683] ---[ end trace 798168b08048292b ]---
[ 1814.716688] ------------[ cut here ]------------
[ 1814.716696] WARNING: at fs/block_dev.c:1478 blkdev_put+0x20c/0x260()
[ 1814.716701] Hardware name: OptiPlex GX620               
[ 1814.716705] Modules linked in: dm_cache(O)
[ 1814.716715] Pid: 3069, comm: dmsetup Tainted: G        W  O 3.2.2 #1
[ 1814.716720] Call Trace:
[ 1814.716729]  [] warn_slowpath_common+0xdc/0x160
[ 1814.716738]  [] ? blkdev_put+0x20c/0x260
[ 1814.716746]  [] ? blkdev_put+0x20c/0x260
[ 1814.716755]  [] warn_slowpath_null+0x3e/0x50
[ 1814.716763]  [] blkdev_put+0x20c/0x260
[ 1814.716771]  [] close_dev+0x69/0x90
[ 1814.716779]  [] dm_put_device+0x57/0xa0
[ 1814.716789]  [] cache_ctr+0x462/0x1840 [dm_cache]
[ 1814.716799]  [] ? _copy_from_user+0x45/0x90
[ 1814.716811]  [] ? _raw_write_unlock+0x43/0xa0
[ 1814.716820]  [] ? realloc_argv+0x3f/0xc0
[ 1814.716827]  [] ? realloc_argv+0x79/0xc0
[ 1814.716835]  [] ? realloc_argv+0x79/0xc0
[ 1814.716844]  [] ? dm_split_args+0x67/0x250
[ 1814.716853]  [] dm_table_add_target+0x176/0x630
[ 1814.716861]  [] ? alloc_targets+0x8b/0x120
[ 1814.716871]  [] table_load+0x18c/0x670
[ 1814.716880]  [] dm_ctl_ioctl+0x1cd/0x480
[ 1814.716889]  [] ? table_clear+0x100/0x100
[ 1814.716898]  [] ? copy_params+0x220/0x220
[ 1814.716906]  [] do_vfs_ioctl+0xa4/0xa80
[ 1814.716914]  [] ? sub_preempt_count+0x7d/0xa0
[ 1814.716922]  [] ? vfsmount_lock_local_unlock+0x58/0xb0
[ 1814.716930]  [] ? mntput_no_expire+0x59/0x290
[ 1814.716939]  [] ? sys_semctl+0xe3/0x140
[ 1814.716948]  [] sys_ioctl+0x76/0xd0
[ 1814.716957]  [] sysenter_do_call+0x12/0x2b
[ 1814.716965]  [] ? do_one_pass+0x4f9/0x8e0
[ 1814.716972] ---[ end trace 798168b08048292c ]---
[ 1814.716977] ------------[ cut here ]------------
[ 1814.716984] WARNING: at fs/block_dev.c:1479 blkdev_put+0x243/0x260()
[ 1814.716989] Hardware name: OptiPlex GX620               
[ 1814.716994] Modules linked in: dm_cache(O)
[ 1814.717003] Pid: 3069, comm: dmsetup Tainted: G        W  O 3.2.2 #1
[ 1814.717040] Call Trace:
[ 1814.717050]  [] warn_slowpath_common+0xdc/0x160
[ 1814.717059]  [] ? blkdev_put+0x243/0x260
[ 1814.717067]  [] ? blkdev_put+0x243/0x260
[ 1814.717076]  [] warn_slowpath_null+0x3e/0x50
[ 1814.717084]  [] blkdev_put+0x243/0x260
[ 1814.717093]  [] close_dev+0x69/0x90
[ 1814.717101]  [] dm_put_device+0x57/0xa0
[ 1814.717111]  [] cache_ctr+0x462/0x1840 [dm_cache]
[ 1814.717121]  [] ? _copy_from_user+0x45/0x90
[ 1814.717133]  [] ? _raw_write_unlock+0x43/0xa0
[ 1814.717143]  [] ? realloc_argv+0x3f/0xc0
[ 1814.717151]  [] ? realloc_argv+0x79/0xc0
[ 1814.717159]  [] ? realloc_argv+0x79/0xc0
[ 1814.717167]  [] ? dm_split_args+0x67/0x250
[ 1814.717177]  [] dm_table_add_target+0x176/0x630
[ 1814.717186]  [] ? alloc_targets+0x8b/0x120
[ 1814.717195]  [] table_load+0x18c/0x670
[ 1814.717205]  [] dm_ctl_ioctl+0x1cd/0x480
[ 1814.717215]  [] ? table_clear+0x100/0x100
[ 1814.717224]  [] ? copy_params+0x220/0x220
[ 1814.717232]  [] do_vfs_ioctl+0xa4/0xa80
[ 1814.717240]  [] ? sub_preempt_count+0x7d/0xa0
[ 1814.717249]  [] ? vfsmount_lock_local_unlock+0x58/0xb0
[ 1814.717257]  [] ? mntput_no_expire+0x59/0x290
[ 1814.717266]  [] ? sys_semctl+0xe3/0x140
[ 1814.717276]  [] sys_ioctl+0x76/0xd0
[ 1814.717285]  [] sysenter_do_call+0x12/0x2b
[ 1814.717294]  [] ? do_one_pass+0x4f9/0x8e0
[ 1814.717302] ---[ end trace 798168b08048292d ]---
[ 1814.724116] ------------[ cut here ]------------
[ 1814.724128] WARNING: at fs/block_dev.c:1431 __blkdev_put+0x2c1/0x2e0()
[ 1814.724134] Hardware name: OptiPlex GX620               
[ 1814.724139] Modules linked in: dm_cache(O)
[ 1814.724152] Pid: 3069, comm: dmsetup Tainted: G        W  O 3.2.2 #1
[ 1814.724158] Call Trace:
[ 1814.724169]  [] warn_slowpath_common+0xdc/0x160
[ 1814.724181]  [] ? __blkdev_put+0x2c1/0x2e0
[ 1814.724189]  [] ? __blkdev_put+0x2c1/0x2e0
[ 1814.724199]  [] warn_slowpath_null+0x3e/0x50
[ 1814.724208]  [] __blkdev_put+0x2c1/0x2e0
[ 1814.724220]  [] ? disk_flush_events+0x67/0x100
[ 1814.724229]  [] blkdev_put+0x7f/0x260
[ 1814.724239]  [] close_dev+0x69/0x90
[ 1814.724247]  [] dm_put_device+0x57/0xa0
[ 1814.724258]  [] cache_ctr+0x462/0x1840 [dm_cache]
[ 1814.724270]  [] ? _copy_from_user+0x45/0x90
[ 1814.724284]  [] ? _raw_write_unlock+0x43/0xa0
[ 1814.724294]  [] ? realloc_argv+0x3f/0xc0
[ 1814.724302]  [] ? realloc_argv+0x79/0xc0
[ 1814.724311]  [] ? realloc_argv+0x79/0xc0
[ 1814.724321]  [] ? dm_split_args+0x67/0x250
[ 1814.724333]  [] dm_table_add_target+0x176/0x630
[ 1814.724342]  [] ? alloc_targets+0x8b/0x120
[ 1814.724354]  [] table_load+0x18c/0x670
[ 1814.724366]  [] dm_ctl_ioctl+0x1cd/0x480
[ 1814.724377]  [] ? table_clear+0x100/0x100
[ 1814.724387]  [] ? copy_params+0x220/0x220
[ 1814.724396]  [] do_vfs_ioctl+0xa4/0xa80
[ 1814.724405]  [] ? sub_preempt_count+0x7d/0xa0
[ 1814.724415]  [] ? vfsmount_lock_local_unlock+0x58/0xb0
[ 1814.724424]  [] ? mntput_no_expire+0x59/0x290
[ 1814.724435]  [] ? sys_semctl+0xe3/0x140
[ 1814.724447]  [] sys_ioctl+0x76/0xd0
[ 1814.724457]  [] sysenter_do_call+0x12/0x2b
[ 1814.724467]  [] ? do_one_pass+0x4f9/0x8e0
[ 1814.724477] ---[ end trace 798168b08048292e ]---
[ 1814.724496] BUG: unable to handle kernel NULL pointer dereference at 00000004
[ 1814.724583] IP: [] dm_put_device+0x6b/0xa0
[ 1814.724637] *pde = 00000000 
[ 1814.724670] Oops: 0002 [#1] PREEMPT SMP 
[ 1814.724719] Modules linked in: dm_cache(O)
[ 1814.724766] 
[ 1814.724785] Pid: 3069, comm: dmsetup Tainted: G        W  O 3.2.2 #1 Dell Inc.                 OptiPlex GX620               /0ND237
[ 1814.724902] EIP: 0060:[] EFLAGS: 00010246 CPU: 0
[ 1814.724955] EIP is at dm_put_device+0x6b/0xa0
[ 1814.724997] EAX: 00200200 EBX: f5ab054c ECX: 00000000 EDX: 00000000
[ 1814.725015] ESI: f5ab0540 EDI: ffffffea EBP: f5b8fd48 ESP: f5b8fd40
[ 1814.725015]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 1814.725015] Process dmsetup (pid: 3069, ti=f5b8e000 task=f56443f0 task.ti=f5b8e000)
[ 1814.725015] Stack:
[ 1814.725015]  f84fe080 f5bae500 f5b8fe44 f880ecb2 f84f9176 f88117ba f5b8fe24 00000000
[ 1814.725015]  f5b8fd74 c153a785 00000000 f5a13ec0 f5a13f20 f5b8fdb0 f5ab0480 00000000
[ 1814.725015]  00000246 00000000 f7ffe000 80100010 00000003 00000001 000000eb 00000000
[ 1814.725015] Call Trace:
[ 1814.725015]  [] cache_ctr+0x462/0x1840 [dm_cache]
[ 1814.725015]  [] ? _copy_from_user+0x45/0x90
[ 1814.725015]  [] ? _raw_write_unlock+0x43/0xa0
[ 1814.725015]  [] ? realloc_argv+0x3f/0xc0
[ 1814.725015]  [] ? realloc_argv+0x79/0xc0
[ 1814.725015]  [] ? realloc_argv+0x79/0xc0
[ 1814.725015]  [] ? dm_split_args+0x67/0x250
[ 1814.725015]  [] dm_table_add_target+0x176/0x630
[ 1814.725015]  [] ? alloc_targets+0x8b/0x120
[ 1814.725015]  [] table_load+0x18c/0x670
[ 1814.725015]  [] dm_ctl_ioctl+0x1cd/0x480
[ 1814.725015]  [] ? table_clear+0x100/0x100
[ 1814.725015]  [] ? copy_params+0x220/0x220
[ 1814.725015]  [] do_vfs_ioctl+0xa4/0xa80
[ 1814.725015]  [] ? sub_preempt_count+0x7d/0xa0
[ 1814.725015]  [] ? vfsmount_lock_local_unlock+0x58/0xb0
[ 1814.725015]  [] ? mntput_no_expire+0x59/0x290
[ 1814.725015]  [] ? sys_semctl+0xe3/0x140
[ 1814.725015]  [] sys_ioctl+0x76/0xd0
[ 1814.725015]  [] sysenter_do_call+0x12/0x2b
[ 1814.725015]  [] ? do_one_pass+0x4f9/0x8e0
[ 1814.725015] Code: 60 01 2a c2 01 83 15 64 01 2a c2 00 8b 00 8b 10 89 f0 e8 19 ff ff ff 83 05 68 01 2a c2 01 83 15 6c 01 2a c2 00 8b 46 04 8b 53 f4 <89> 42 04 89 10 89 f0 c7 43 f4 00 01 10 00 c7 46 04 00 02 20 00 
[ 1814.725015] EIP: [] dm_put_device+0x6b/0xa0 SS:ESP 0068:f5b8fd40
[ 1814.725015] CR2: 0000000000000004
[ 1814.736052] ---[ end trace 798168b08048292f ]---
@BigTheta
Collaborator
@BigTheta
Collaborator
@sandrain

Thanks for your kind reply.

I tested several configurations again. BTW, I'm testing the 3.0.8 version. As I told you I'm trying to configure my ssd (60G) as a cache device of my local hdd (500G).

Before dm-setup, I partitioned the hdd and formatted it with ext4. And populated it by 'cp -r /etc ./'.
And tried following comands:

dmc-setup.pl -o /dev/sdd1 -c /dev/sdc -n cache -b 8 -s [size] -a 1024

I've tested it varying the cache [size]:

8388608 (2**23) = 32G
4194304 (2**22) = 16G
2097152 (2**21) = 8G
1048576 (2**20) = 4G

On my test machine, only 4G was successful. If I set the [size] bigger than that, the crt failed. Probably, I think, it should be related to allocating memory space for metadata. (as I posted earlier, the machine has only 1.5G RAM)

And with the successful configuration (4G cache size, 1024 assoc), I tested some file operations.
Before that, after mounting the cache volume the populated files ('cp -r /etc ./') were safely there as expected. So I created a directory and moved some *.tar.bz files into it. (around 70 files)

mkdir test && cd test
cp /usr/portage/distfiles/*.tar.bz2 ./

And it was successful. Then I tried to unpack all tar files.

for file in *.tar.bz2; do tar -jxf $file; done

And in the middle of the operation, the system crashed. Sadly, I forgot to catch the logs.
So I rebooted the system, created and mounted the cache device again.
This time, the first operation, 'ls', kills the module again.

Here goes the log:

Mar 24 17:13:40 gradassist kernel: [ 1138.872204] BUG: unable to handle kernel paging request at fae81010
Mar 24 17:13:40 gradassist kernel: [ 1138.872290] IP: [] cache_map+0x20e/0xf50 [dm_cache]
Mar 24 17:13:40 gradassist kernel: [ 1138.872355] *pde = 35273067 *pte = 00000000 
Mar 24 17:13:40 gradassist kernel: [ 1138.872405] Oops: 0000 [#1] PREEMPT SMP 
Mar 24 17:13:40 gradassist kernel: [ 1138.872455] Modules linked in: dm_cache(O)
Mar 24 17:13:40 gradassist kernel: [ 1138.872503] 
Mar 24 17:13:40 gradassist kernel: [ 1138.872524] Pid: 3126, comm: ls Tainted: G           O 3.2.2 #1 Dell Inc.                 OptiPlex GX620               /0ND237
Mar 24 17:13:40 gradassist kernel: [ 1138.872638] EIP: 0060:[] EFLAGS: 00010246 CPU: 1
Mar 24 17:13:40 gradassist kernel: [ 1138.872692] EIP is at cache_map+0x20e/0xf50 [dm_cache]
Mar 24 17:13:40 gradassist kernel: [ 1138.872741] EAX: fae81000 EBX: 00000000 ECX: 0001bbb7 EDX: 00000000
Mar 24 17:13:40 gradassist kernel: [ 1138.872799] ESI: 00000000 EDI: 00100000 EBP: f5a9db60 ESP: f5a9dad4
Mar 24 17:13:40 gradassist kernel: [ 1138.872857]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Mar 24 17:13:40 gradassist kernel: [ 1138.872909] Process ls (pid: 3126, ti=f5a9c000 task=f502e370 task.ti=f5a9c000)
Mar 24 17:13:40 gradassist kernel: [ 1138.872972] Stack:
Mar 24 17:13:40 gradassist kernel: [ 1138.872993]  00000109 c2022a60 00000001 f5a9dc20 f65cb400 0003f719 0001bbb7 00000000
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  00100000 00000000 ffffffff ffffffff 00000000 f65cb400 00100000 ffffffff
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  f5b69b80 f502e370 00000000 2dc00108 00000000 00000400 00100000 00000000
Mar 24 17:13:40 gradassist kernel: [ 1138.873013] Call Trace:
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? bio_alloc_bioset+0x60/0x150
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] __map_bio+0x54/0x270
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? clone_bio+0x60/0x160
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] __split_and_process_bio+0x346/0xb80
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? sub_preempt_count+0x7d/0xa0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? _raw_spin_unlock+0x3e/0x90
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? __find_get_block_slow+0x16c/0x260
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? generic_make_request_checks+0x11e/0x800
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] dm_request+0x184/0x2f0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] generic_make_request+0xf9/0x160
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] submit_bio+0x97/0x190
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? bio_alloc_bioset+0x60/0x150
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] submit_bh+0x14a/0x1f0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ll_rw_block+0x128/0x170
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] __breadahead+0x5a/0xa0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] __ext4_get_inode_loc+0x537/0x820
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ext4_iget+0x87/0xc70
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? path_lookupat+0x6f/0xcd0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? lapic_next_event+0x29/0x40
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? clockevents_program_event+0xe2/0x270
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ext4_lookup+0xbf/0x200
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? sub_preempt_count+0x7d/0xa0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? _raw_spin_unlock+0x3e/0x90
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] d_alloc_and_lookup+0x53/0xd0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] do_lookup+0x42a/0x670
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? filemap_fault+0xd2/0x7b0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] path_lookupat+0x1a8/0xcd0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? getname_flags+0x39/0x200
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] do_path_lookup+0x38/0xc0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] user_path_at_empty+0x6d/0xe0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? free_pages_and_swap_cache+0x123/0x160
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? tlb_flush_mmu+0x91/0xd0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? tlb_finish_mmu+0x1f/0x70
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] user_path_at+0x2d/0x50
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] vfs_fstatat+0x6a/0xf0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? mntput_no_expire+0x59/0x290
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] vfs_lstat+0x2e/0x40
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] sys_lstat64+0x27/0x70
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? sub_preempt_count+0x7d/0xa0
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? trace_hardirqs_on_thunk+0xc/0x10
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? do_trap+0x190/0x190
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? trace_hardirqs_on_thunk+0xc/0x10
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] ? do_device_not_available+0x45/0x70
Mar 24 17:13:40 gradassist kernel: [ 1138.873013]  [] sysenter_do_call+0x12/0x2b
Mar 24 17:13:40 gradassist kernel: [ 1138.873013] Code: 86 18 02 00 00 83 45 cc 01 83 55 d0 00 89 7d dc 89 4d e4 8b 4d 8c 8b 5d 90 83 c1 01 83 d3 00 89 4d d4 89 5d d8 89 4d 8c 89 5d 90 <0f> b7 48 10 f6 c1 03 0f 85 5d ff ff ff 83 05 a0 32 81 f8 01 83 
Mar 24 17:13:40 gradassist kernel: [ 1138.873013] EIP: [] cache_map+0x20e/0xf50 [dm_cache] SS:ESP 0068:f5a9dad4
Mar 24 17:13:40 gradassist kernel: [ 1138.873013] CR2: 00000000fae81010
Mar 24 17:13:40 gradassist kernel: [ 1138.873013] ---[ end trace 0a2dc3f4463ff005 ]---
@sandrain
@mingzhao mingzhao closed this
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