[Kernel-packages] [Bug 1691045] Comment bridged from LTC Bugzilla

2017-06-01 Thread bugproxy 
--- Comment From kumar.ankit...@in.ibm.com 2017-05-19 09:43 EDT---
(In reply to comment #13)
> I built a Zesty test kernel with a cherry pick of commit 041939c1ec54.  The
> test kernel can be downloaded from:
>
> http://kernel.ubuntu.com/~jsalisbury/lp1691045/
>
> Can you test this kernel and see if it resolves this bug?

Tested.
Working well.

~Ankit

--- Comment From kumar.ankit...@in.ibm.com 2017-06-01 05:27 EDT---
(In reply to comment #17)
> Yes, the 16.04.03 kernel is based off the 4.10 Zesty kernel, so it will get
> the patch.  Did you happen to have a chance to test the kernel posted in
> comment #2?

Tested.
Working well.

~Ankit

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Title:
  PowerPC: Pstore dump for powerpc is broken

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

Bug description:
  ---Problem Description---
  Pstore write is broken for PowerPC. On panic, kernel doesn't write mesg to 
/fs/pstore/dmesg*
  (Entry doesn't gets created at all)
   
  Contact Information = Ankit Kumar/kumar.ankit...@in.ibm.com 
   
  ---uname output---
  Linux seedlp2 4.10.0-15-generic #17-Ubuntu SMP Fri Mar 24 17:50:37 UTC 2017 
ppc64le ppc64le ppc64le GNU/Linux
   
  Machine Type = lpar 
   
  Write to nvram failed
   
  ---Debugger---
  A debugger is not configured
   
  ---Steps to Reproduce---
  1. Checked kdump kernel is loaded.
  2. Triggered system crash
  # echo c > /proc/sysrq-trigger

  3. /sys/fs/pstore/dmesg* doesn't gets created

  This issue can be reproduced after commit c950fd6f201

  c950fd6f201 - pstore: Split pstore fragile flags

  It introduces  PSTORE_FLAGS_DMESG, which is not set for PowerPC.

  
  Please include below commit 041939c1ec5 as this fixes this issue.

  commit 041939c1ec54208b42f5cd819209173d52a29d34
  Author: Ankit Kumar 
  Date:   Thu Apr 27 17:03:13 2017 +0530

  pstore: Fix flags to enable dumps on powerpc
  
  After commit c950fd6f201a kernel registers pstore write based on flag set.
  Pstore write for powerpc is broken as flags(PSTORE_FLAGS_DMESG) is not 
set for
  powerpc architecture. On panic, kernel doesn't write message to
  /fs/pstore/dmesg*(Entry doesn't gets created at all).
  
  This patch enables pstore write for powerpc architecture by setting
  PSTORE_FLAGS_DMESG flag.
  
  Fixes: c950fd6f201a ("pstore: Split pstore fragile flags")
  Cc: sta...@vger.kernel.org # v4.9+
  Signed-off-by: Ankit Kumar 
  Signed-off-by: Kees Cook 

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[Kernel-packages] [Bug 1691045] Comment bridged from LTC Bugzilla

2017-05-26 Thread bugproxy 
--- Comment From pavra...@in.ibm.com 2017-05-26 05:50 EDT---
Issue is observed even on Ubuntu 16.04.03.

root@ltc-firep2:/sys/fs/pstore# ls -lrt
total 0
-r--r--r-- 1 root root  3909 May  5 04:21 dmesg-nvram-1
-r--r--r-- 1 root root  4080 May 26 02:59 powerpc-opal-nvram-8
-r--r--r-- 1 root root 65520 May 26 02:59 powerpc-common-nvram-6

root@ltc-firep2:/sys/fs/pstore# ls -lrt
total 0
-r--r--r-- 1 root root  3909 May  5 04:21 dmesg-nvram-1
-r--r--r-- 1 root root  4080 May 26 02:59 powerpc-opal-nvram-8
-r--r--r-- 1 root root 65520 May 26 02:59 powerpc-common-nvram-6
root@ltc-firep2:/sys/fs/pstore# tail dmesg-nvram-1
<4>[  351.724539] LR [c05dd79c] write_sysrq_trigger+0x10c/0x230
<4>[  351.724583] Call Trace:
<4>[  351.724603] [c00fd79b7cf0] [c05dd77c] 
write_sysrq_trigger+0xec/0x230 (unreliable)
<4>[  351.724677] [c00fd79b7d90] [c03dabd4] 
proc_reg_write+0x84/0x120
<4>[  351.724733] [c00fd79b7dd0] [c0327520] SyS_write+0x150/0x400
<4>[  351.724789] [c00fd79b7e30] [c000a17c] system_call+0x38/0xb4
<4>[  351.724843] Instruction dump:
<4>[  351.724870] 409effb8 7fc3f378 4bfff381 4bac 3c4c00c1 384205c0 
3d42fff2 394ac530
<4>[  351.724963] 3921 912a 7c0004ac 3940 <992a> 4e800020 
6000 6042
<4>[  351.725055] ---[ end trace 9de875846d84dfcd ]---

root@ltc-firep2:/sys/fs/pstore# ls -lrt
total 0
-r--r--r-- 1 root root  3909 May  5 04:21 dmesg-nvram-1
-r--r--r-- 1 root root  4080 May 26 05:31 powerpc-opal-nvram-8
-r--r--r-- 1 root root 65520 May 26 05:31 powerpc-common-nvram-6
root@ltc-firep2:/sys/fs/pstore# tail dmesg-nvram-1
<4>[  351.724539] LR [c05dd79c] write_sysrq_trigger+0x10c/0x230
<4>[  351.724583] Call Trace:
<4>[  351.724603] [c00fd79b7cf0] [c05dd77c] 
write_sysrq_trigger+0xec/0x230 (unreliable)
<4>[  351.724677] [c00fd79b7d90] [c03dabd4] 
proc_reg_write+0x84/0x120
<4>[  351.724733] [c00fd79b7dd0] [c0327520] SyS_write+0x150/0x400
<4>[  351.724789] [c00fd79b7e30] [c000a17c] system_call+0x38/0xb4
<4>[  351.724843] Instruction dump:
<4>[  351.724870] 409effb8 7fc3f378 4bfff381 4bac 3c4c00c1 384205c0 
3d42fff2 394ac530
<4>[  351.724963] 3921 912a 7c0004ac 3940 <992a> 4e800020 
6000 6042
<4>[  351.725055] ---[ end trace 9de875846d84dfcd ]---
root@ltc-firep2:/sys/fs/pstore#

Thanks,
Pavithra

--- Comment From hegdevas...@in.ibm.com 2017-05-26 07:55 EDT---
... based on previous comment .. can you please backport patch to 16.04.03 as 
well?

-Vasant

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https://bugs.launchpad.net/bugs/1691045

Title:
  PowerPC: Pstore dump for powerpc is broken

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

Bug description:
  ---Problem Description---
  Pstore write is broken for PowerPC. On panic, kernel doesn't write mesg to 
/fs/pstore/dmesg*
  (Entry doesn't gets created at all)
   
  Contact Information = Ankit Kumar/kumar.ankit...@in.ibm.com 
   
  ---uname output---
  Linux seedlp2 4.10.0-15-generic #17-Ubuntu SMP Fri Mar 24 17:50:37 UTC 2017 
ppc64le ppc64le ppc64le GNU/Linux
   
  Machine Type = lpar 
   
  Write to nvram failed
   
  ---Debugger---
  A debugger is not configured
   
  ---Steps to Reproduce---
  1. Checked kdump kernel is loaded.
  2. Triggered system crash
  # echo c > /proc/sysrq-trigger

  3. /sys/fs/pstore/dmesg* doesn't gets created

  This issue can be reproduced after commit c950fd6f201

  c950fd6f201 - pstore: Split pstore fragile flags

  It introduces  PSTORE_FLAGS_DMESG, which is not set for PowerPC.

  
  Please include below commit 041939c1ec5 as this fixes this issue.

  commit 041939c1ec54208b42f5cd819209173d52a29d34
  Author: Ankit Kumar 
  Date:   Thu Apr 27 17:03:13 2017 +0530

  pstore: Fix flags to enable dumps on powerpc
  
  After commit c950fd6f201a kernel registers pstore write based on flag set.
  Pstore write for powerpc is broken as flags(PSTORE_FLAGS_DMESG) is not 
set for
  powerpc architecture. On panic, kernel doesn't write message to
  /fs/pstore/dmesg*(Entry doesn't gets created at all).
  
  This patch enables pstore write for powerpc architecture by setting
  PSTORE_FLAGS_DMESG flag.
  
  Fixes: c950fd6f201a ("pstore: Split pstore fragile flags")
  Cc: sta...@vger.kernel.org # v4.9+
  Signed-off-by: Ankit Kumar 
  Signed-off-by: Kees Cook 

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[Kernel-packages] [Bug 1691045] Comment bridged from LTC Bugzilla

2017-05-16 Thread bugproxy 
--- Comment From vipar...@in.ibm.com 2017-05-16 07:07 EDT---
Commit c950fd6f20 ("pstore: Split pstore fragile flags") is
available in kernel 4.9 and above, while commit
041939c1ec ("pstore: Fix flags to enable dumps on powerpc")
would get into 4.12, so need to be pulled into kernel version 4.9 and
above.

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https://bugs.launchpad.net/bugs/1691045

Title:
  PowerPC: Pstore dump for powerpc is broken

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

Bug description:
  ---Problem Description---
  Pstore write is broken for PowerPC. On panic, kernel doesn't write mesg to 
/fs/pstore/dmesg*
  (Entry doesn't gets created at all)
   
  Contact Information = Ankit Kumar/kumar.ankit...@in.ibm.com 
   
  ---uname output---
  Linux seedlp2 4.10.0-15-generic #17-Ubuntu SMP Fri Mar 24 17:50:37 UTC 2017 
ppc64le ppc64le ppc64le GNU/Linux
   
  Machine Type = lpar 
   
  Write to nvram failed
   
  ---Debugger---
  A debugger is not configured
   
  ---Steps to Reproduce---
  1. Checked kdump kernel is loaded.
  2. Triggered system crash
  # echo c > /proc/sysrq-trigger

  3. /sys/fs/pstore/dmesg* doesn't gets created

  This issue can be reproduced after commit c950fd6f201

  c950fd6f201 - pstore: Split pstore fragile flags

  It introduces  PSTORE_FLAGS_DMESG, which is not set for PowerPC.

  
  Please include below commit 041939c1ec5 as this fixes this issue.

  commit 041939c1ec54208b42f5cd819209173d52a29d34
  Author: Ankit Kumar 
  Date:   Thu Apr 27 17:03:13 2017 +0530

  pstore: Fix flags to enable dumps on powerpc
  
  After commit c950fd6f201a kernel registers pstore write based on flag set.
  Pstore write for powerpc is broken as flags(PSTORE_FLAGS_DMESG) is not 
set for
  powerpc architecture. On panic, kernel doesn't write message to
  /fs/pstore/dmesg*(Entry doesn't gets created at all).
  
  This patch enables pstore write for powerpc architecture by setting
  PSTORE_FLAGS_DMESG flag.
  
  Fixes: c950fd6f201a ("pstore: Split pstore fragile flags")
  Cc: sta...@vger.kernel.org # v4.9+
  Signed-off-by: Ankit Kumar 
  Signed-off-by: Kees Cook 

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-power-systems/+bug/1691045/+subscriptions

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