[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[bugproxy]

*** This bug is a duplicate of bug 1706247 ***
https://bugs.launchpad.net/bugs/1706247

** Tags removed: targetmilestone-inin16043
** Tags added: targetmilestone-inin1804

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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Artful:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Brad Figg]

*** This bug is a duplicate of bug 1706247 ***
https://bugs.launchpad.net/bugs/1706247

** Tags added: cscc

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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Artful:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
  79cc38ded1e1ac86e69c90f604efadd50b0b3762
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Andrew Cloke]

*** This bug is a duplicate of bug 1706247 ***
https://bugs.launchpad.net/bugs/1706247

This bug has been marked as a duplicate of 
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1706247. As a result, no 
updates will be posted to this bug. Please goto LP#1706247 for the current 
status.
Thanks.

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Artful:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

*** This bug is a duplicate of bug 1706247 ***
https://bugs.launchpad.net/bugs/1706247

Thanks for the update.  I'll mark this bug as a duplicate of bug
1706247, since the fixes for that bug are the same for this bug.

We can look at the traces for the new bug in that bug report.

** This bug has been marked a duplicate of bug 1706247
   Add support for 16g huge pages on Ubuntu 16.04.2 PowerNV

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Artful:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs 

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

Can you see if this bug is resolved with the following artful kernel for bug 
1706247:
http://kernel.ubuntu.com/~jsalisbury/lp1706247/artful

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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Artful:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
 

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

The latest HWE kernel should be 4.13 based.

** No longer affects: linux (Ubuntu Xenial)

** Also affects: linux (Ubuntu Artful)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu Artful)
   Status: New => In Progress

** Changed in: linux (Ubuntu Artful)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Artful)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Artful:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The 

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

I removed the Zesty bug task since it is now EOL.  Does this bug still
happen with the latest HWE kernel for Xenial?


** No longer affects: linux (Ubuntu Zesty)

-- 
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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Artful:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Manoj Iyer]

** Changed in: ubuntu-power-systems
   Status: Triaged => In Progress

** Tags removed: triage-a
** Tags added: triage-g

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

Yes, it would be best to open a new bug.  Just to confirm, this bug only
happens when using the test kernel I posted in comment #5?

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

Did the test kernel posted in comment #5 fix the original bug, but
introduce a new issue?

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Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
 

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

Did you install both the linux-image and linux-image-extra .deb
packages?  I believer the virtio module in in -extra.

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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

I built a Zesty test kernel with the six requested patches.

The test kernel can be downloaded from:

http://kernel.ubuntu.com/~jsalisbury/lp1706247/zesty

Can you test this kernel and see if it resolves this bug?

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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

** Changed in: linux (Ubuntu Xenial)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux (Ubuntu Zesty)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

An Artful SRU request for these commits was already submitted in bug
1706247.  I'm working on backporting them to Xenial(4.4 based), but have
had some issues with build failures.  There are some prereq commits that
are also needed for 4.4 kernels.  I'll see what the extent of these
prereqs are and post an update.

If there are too many prereqs for Xenial, we may have to have this
issues address in Xenial via the HWE kernels, but I'm investigating.

** Changed in: linux (Ubuntu)
   Status: Triaged => In Progress

** Also affects: linux (Ubuntu Zesty)
   Importance: Undecided
   Status: New

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu Xenial)
   Status: New => In Progress

** Changed in: linux (Ubuntu Zesty)
   Status: New => In Progress

** Changed in: linux (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Zesty)
   Importance: Undecided => High

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Joseph Salisbury]

** Changed in: linux (Ubuntu)
 Assignee: Canonical Kernel Team (canonical-kernel-team) => Joseph 
Salisbury (jsalisbury)

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  Triaged

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
  79cc38ded1e1ac86e69c90f604efadd50b0b3762
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Frank Heimes]

** Tags added: kernel-da-key

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  Triaged

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
  79cc38ded1e1ac86e69c90f604efadd50b0b3762
  4ae279c2c96ab38a78b954d218790a8f6db714e5

To manage notifications about this bug go to:

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Andrew Cloke]

Hi Breno, thanks for the update. I'll move the bug to "Triage" and ask
the kernel team to take a look.

** Changed in: ubuntu-power-systems
   Status: Incomplete => Triaged

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  Triaged

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Breno Leitão]

hi Andrew,

I understand that the patches are already accepted on upstream release,
aren't they?

I can see them on Linus' tree.

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Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Incomplete
Status in linux package in Ubuntu:
  Triaged

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
  79cc38ded1e1ac86e69c90f604efadd50b0b3762
  

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Andrew Cloke]

** Changed in: ubuntu-power-systems
   Status: Triaged => Incomplete

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Incomplete
Status in linux package in Ubuntu:
  Triaged

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
  79cc38ded1e1ac86e69c90f604efadd50b0b3762
  4ae279c2c96ab38a78b954d218790a8f6db714e5

To manage notifications about this bug go 

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Andrew Cloke]

Are we waiting on the patches referenced in the bug description and
comment #1 to land upstream before backporting?

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  Triaged

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
  79cc38ded1e1ac86e69c90f604efadd50b0b3762
  4ae279c2c96ab38a78b954d218790a8f6db714e5

To 

[Kernel-packages] [Bug 1724120] Re: Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run with 16Gb hugepages configured

[Andrew Cloke]

** Tags removed: triage-g
** Tags added: triage-a

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1724120

Title:
  Ubuntu 16.04.3 - call traces occurs when memory-hotplug test is run
  with 16Gb hugepages configured

Status in The Ubuntu-power-systems project:
  Triaged
Status in linux package in Ubuntu:
  Triaged

Bug description:
  Issue:

  Call traces occurs when memory-hotplug script is run with 16Gb
  hugepages configured.

  Environment:
  ppc64le PowerVM Lpar

  root@ltctuleta-lp1:~# uname -r
  4.4.0-34-generic

  root@ltctuleta-lp1:~# cat /proc/meminfo | grep -i huge
  AnonHugePages: 0 kB
  HugePages_Total:   2
  HugePages_Free:2
  HugePages_Rsvd:0
  HugePages_Surp:0
  Hugepagesize:   16777216 kB

  root@ltctuleta-lp1:~# free -h
totalusedfree  shared  buff/cache   
available
  Mem:85G 32G 52G 16M193M 
52G
  Swap:   43G  0B 43G

  Steps to reproduce:
  1 - Download kernel source and enter to the directory- 
tools/testing/selftests/memory-hotplug/
  2 - Run  mem-on-off-test.sh script in it.

  System gives call traces like:

  offline_memory_expect_success 639: unexpected fail
  online-offline 668
  [   57.552964] Unable to handle kernel paging request for data at address 
0x0028
  [   57.552977] Faulting instruction address: 0xc029bc04
  [   57.552987] Oops: Kernel access of bad area, sig: 11 [#1]
  [   57.552992] SMP NR_CPUS=2048 NUMA pSeries
  [   57.553002] Modules linked in: btrfs xor raid6_pq pseries_rng sunrpc 
autofs4 ses enclosure nouveau bnx2x i2c_algo_bit ttm drm_kms_helper syscopyarea 
sysfillrect sysimgblt fb_sys_fops drm vxlan ip6_udp_tunnel ipr udp_tunnel 
rtc_generic mdio libcrc32c
  [   57.553050] CPU: 44 PID: 6518 Comm: mem-on-off-test Not tainted 
4.4.0-34-generic #53-Ubuntu
  [   57.553059] task: c0072773c8e0 ti: c0072778 task.ti: 
c0072778
  [   57.553067] NIP: c029bc04 LR: c029bbdc CTR: 
c01107f0
  [   57.553076] REGS: c00727783770 TRAP: 0300   Not tainted  
(4.4.0-34-generic)
  [   57.553083] MSR: 80019033   CR: 24242882  
XER: 0002
  [   57.553104] CFAR: c0008468 DAR: 0028 DSISR: 4000 
SOFTE: 1 
  GPR00: c029bbdc c007277839f0 c15b5d00  
  GPR04: 0029d000 0800  fa01 
  GPR08: fa700020 0008 c185e270 c00e7e50 
  GPR12: 2200 ce6ea200 0029d000 2200 
  GPR16: 1000 c15e2200 0a70  
  GPR20: 0001 0100 0200 c15f16d0 
  GPR24: c1876510  0001 c1872a00 
  GPR28: 0029d000 f000 fa70 0029c000 
  [   57.553211] NIP [c029bc04] dissolve_free_huge_pages+0x154/0x220
  [   57.553219] LR [c029bbdc] dissolve_free_huge_pages+0x12c/0x220
  [   57.553226] Call Trace:
  [   57.553231] [c007277839f0] [c029bbdc] 
dissolve_free_huge_pages+0x12c/0x220 (unreliable)
  [   57.553244] [c00727783a80] [c02dcbc8] 
__offline_pages.constprop.6+0x3f8/0x900
  [   57.553254] [c00727783bd0] [c06fbb38] 
memory_subsys_offline+0xa8/0x110
  [   57.553265] [c00727783c00] [c06d6424] 
device_offline+0x104/0x140
  [   57.553274] [c00727783c40] [c06fba80] 
store_mem_state+0x180/0x190
  [   57.553283] [c00727783c80] [c06d1e58] dev_attr_store+0x68/0xa0
  [   57.553293] [c00727783cc0] [c0398110] sysfs_kf_write+0x80/0xb0
  [   57.553302] [c00727783d00] [c0397028] 
kernfs_fop_write+0x188/0x200
  [   57.553312] [c00727783d50] [c02e190c] __vfs_write+0x6c/0xe0
  [   57.553321] [c00727783d90] [c02e2640] vfs_write+0xc0/0x230
  [   57.553329] [c00727783de0] [c02e367c] SyS_write+0x6c/0x110
  [   57.553339] [c00727783e30] [c0009204] system_call+0x38/0xb4
  [   57.553346] Instruction dump:
  [   57.553351] 7e831836 4bfff991 e91e0028 e8fe0020 7d32e82a f9070008 f8e8 
fabe0020 
  [   57.553366] fade0028 79294620 79291764 7d234a14  3908 
f9030028 81091458 
  [   57.553383] ---[ end trace 617f7bdd75bcfc10 ]---
  [   57.557133] 
  Segmentation fault

  The following commit IDs were built into a 4.10.0-37-generic #41 test
  kernel and verified to fix the problem:

  a525108cf1cc14651602d678da38fa627a76a724
  e1073d1e7920946ac4776a619cc40668b9e1401b
  40692eb5eea209c2dd55857f44b4e1d7206e91d6
  e24a1307ba1f99fc62a0bd61d5e87fcfb6d5503d
  79cc38ded1e1ac86e69c90f604efadd50b0b3762
  4ae279c2c96ab38a78b954d218790a8f6db714e5

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