[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-24 Thread Frank Heimes 
** Changed in: ubuntu-power-systems
   Status: Fix Committed => Fix Released

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Title:
  [OPAL] Assert fail:
  core/mem_region.c:447:lock_held_by_me(>free_list_lock)

Status in The Ubuntu-power-systems project:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Released

Bug description:
  == Comment: #0 - Application Cdeadmin  -
  2018-04-03 05:20:56 ==

  == Comment: #1 - Application Cdeadmin <> - 2018-04-05 01:30:56 ==
  --- Comment From pridhiviraj 2018-04-05 01:30:25 EDT ---
  The disto needs 47712a921bb781caf69fca9eae43be19968816cb this level of 
commits need to be backported as suggested by Nick piggin.

  == Comment: #2 - PAWAN K. SINGH <> - 2018-04-06 03:35:49 ==
  which is 
  >>>

  From 47712a921bb781caf69fca9eae43be19968816cb Mon Sep 17 00:00:00 2001
  From: Nicholas Piggin 
  Date: Wed, 17 Jan 2018 22:47:22 +1000
  Subject: [PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  The powerpc NMI IPIs may not be recoverable if they are taken in
  some sections of code, and also there have been and still are issues
  with taking NMIs (in KVM guest code, in firmware, etc) which makes them
  a bit dangerous to use.

  Generic code like softlockup detector and rcu stall detectors really
  hammer on trigger_*_backtrace, which has lead to further problems
  because we've implemented it with the NMI.

  So stop providing NMI backtraces for now. Importantly, the powerpc code
  uses NMI IPIs in crash/debug, and the SMP hardlockup watchdog. So if the
  softlockup and rcu hang detection traces are not being printed because
  the CPU is stuck with interrupts off, then the hard lockup watchdog
  should get it with the NMI IPI.

  Fixes: 2104180a5369 ("powerpc/64s: implement arch-specific hardlockup 
watchdog")
  Signed-off-by: Nicholas Piggin 
  Signed-off-by: Michael Ellerman 
  ---
   arch/powerpc/include/asm/nmi.h |  4 
   arch/powerpc/kernel/watchdog.c | 22 --
   2 files changed, 26 deletions(-)

  diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
  index e97f586..9c80939 100644
  --- a/arch/powerpc/include/asm/nmi.h
  +++ b/arch/powerpc/include/asm/nmi.h
  @@ -4,10 +4,6 @@
   
   #ifdef CONFIG_PPC_WATCHDOG
   extern void arch_touch_nmi_watchdog(void);
  -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  -bool exclude_self);
  -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  -
   #else
   static inline void arch_touch_nmi_watchdog(void) {}
   #endif
  diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
  index 87da80c..3963baa 100644
  --- a/arch/powerpc/kernel/watchdog.c
  +++ b/arch/powerpc/kernel/watchdog.c
  @@ -393,25 +393,3 @@ int __init watchdog_nmi_probe(void)
}
return 0;
   }
  -
  -static void handle_backtrace_ipi(struct pt_regs *regs)
  -{
  - nmi_cpu_backtrace(regs);
  -}
  -
  -static void raise_backtrace_ipi(cpumask_t *mask)
  -{
  - unsigned int cpu;
  -
  - for_each_cpu(cpu, mask) {
  - if (cpu == smp_processor_id())
  - handle_backtrace_ipi(NULL);
  - else
  - smp_send_nmi_ipi(cpu, handle_backtrace_ipi, 100);
  - }
  -}
  -
  -void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
  -{
  - nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  -}
  -- 
  2.7.4

  
  >>>

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[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-23 Thread Launchpad Bug Tracker 
This bug was fixed in the package linux - 4.15.0-19.20

---
linux (4.15.0-19.20) bionic; urgency=medium

  * linux: 4.15.0-19.20 -proposed tracker (LP: #1766021)

  * Kernel 4.15.0-15 breaks Dell PowerEdge 12th Gen servers (LP: #1765232)
- Revert "blk-mq: simplify queue mapping & schedule with each possisble CPU"
- Revert "genirq/affinity: assign vectors to all possible CPUs"

linux (4.15.0-18.19) bionic; urgency=medium

  * linux: 4.15.0-18.19 -proposed tracker (LP: #1765490)

  * [regression] Ubuntu 18.04:[4.15.0-17-generic #18] KVM Guest Kernel:
meltdown: rfi/fallback displacement flush not enabled bydefault (kvm)
(LP: #1765429)
- powerpc/pseries: Fix clearing of security feature flags

  * signing: only install a signed kernel (LP: #1764794)
- [Packaging] update to Debian like control scripts
- [Packaging] switch to triggers for postinst.d postrm.d handling
- [Packaging] signing -- switch to raw-signing tarballs
- [Packaging] signing -- switch to linux-image as signed when available
- [Config] signing -- enable Opal signing for ppc64el
- [Packaging] printenv -- add signing options

  * [18.04 FEAT] Sign POWER host/NV kernels (LP: #1696154)
- [Packaging] signing -- add support for signing Opal kernel binaries

  * Please cherrypick s390 unwind fix (LP: #1765083)
- s390/compat: fix setup_frame32

  * Ubuntu 18.04 installer does not detect any IPR based HDD/RAID array [S822L]
[ipr] (LP: #1751813)
- d-i: move ipr to storage-core-modules on ppc64el

  * drivers/gpu/drm/bridge/adv7511/adv7511.ko missing (LP: #1764816)
- SAUCE: (no-up) rename the adv7511 drm driver to adv7511_drm

  * Miscellaneous Ubuntu changes
- [Packaging] Add linux-oem to rebuild test blacklist.

linux (4.15.0-17.18) bionic; urgency=medium

  * linux: 4.15.0-17.18 -proposed tracker (LP: #1764498)

  * Eventual OOM with profile reloads (LP: #1750594)
- SAUCE: apparmor: fix memory leak when duplicate profile load

linux (4.15.0-16.17) bionic; urgency=medium

  * linux: 4.15.0-16.17 -proposed tracker (LP: #1763785)

  * [18.04] [bug] CFL-S(CNP)/CNL GPIO testing failed (LP: #1757346)
- [Config]: Set CONFIG_PINCTRL_CANNONLAKE=y

  * [Ubuntu 18.04] USB Type-C test failed on GLK (LP: #1758797)
- SAUCE: usb: typec: ucsi: Increase command completion timeout value

  * Fix trying to "push" an already active pool VP (LP: #1763386)
- SAUCE: powerpc/xive: Fix trying to "push" an already active pool VP

  * hisi_sas: Revert and replace SAUCE patches w/ upstream (LP: #1762824)
- Revert "UBUNTU: SAUCE: scsi: hisi_sas: export device table of v3 hw to
  userspace"
- Revert "UBUNTU: SAUCE: scsi: hisi_sas: config for hip08 ES"
- scsi: hisi_sas: modify some register config for hip08
- scsi: hisi_sas: add v3 hw MODULE_DEVICE_TABLE()

  * Realtek card reader - RTS5243 [VEN_10EC_5260] (LP: #1737673)
- misc: rtsx: Move Realtek Card Reader Driver to misc
- updateconfigs for Realtek Card Reader Driver
- misc: rtsx: Add support for RTS5260
- misc: rtsx: Fix symbol clashes

  * Mellanox [mlx5] [bionic] UBSAN: Undefined behaviour in
./include/linux/net_dim.h (LP: #1763269)
- net/mlx5e: Fix int overflow

  * apparmor bug fixes for bionic (LP: #1763427)
- apparmor: fix logging of the existence test for signals
- apparmor: make signal label match work when matching stacked labels
- apparmor: audit unknown signal numbers
- apparmor: fix memory leak on buffer on error exit path
- apparmor: fix mediation of prlimit

  * dangling symlinks to loaded apparmor policy (LP: #1755563) // apparmor bug
fixes for bionic (LP: #1763427)
- apparmor: fix dangling symlinks to policy rawdata after replacement

  * [OPAL] Assert fail:
core/mem_region.c:447:lock_held_by_me(>free_list_lock)
(LP: #1762913)
- powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  * [LTC Test] Ubuntu 18.04: tm_trap_test failed on P8 compat mode guest
(LP: #1762928)
- powerpc/tm: Fix endianness flip on trap

  * Add support for RT5660 codec based sound cards on Baytrail (LP: #1657674)
- SAUCE: (no-up) ASoC: Intel: Support machine driver for RT5660 on Baytrail
- SAUCE: (no-up) ASoC: rt5660: Add ACPI support
- SAUCE: (no-up): ASoC: Intel: bytcr-rt5660: Add MCLK, quirks
- [Config] CONFIG_SND_SOC_INTEL_BYTCR_RT5660_MACH=m, CONFIG_SND_SOC_RT5660=m

  * /dev/ipmi enumeration flaky on Cavium Sabre nodes (LP: #1762812)
- i2c: xlp9xx: return ENXIO on slave address NACK
- i2c: xlp9xx: Handle transactions with I2C_M_RECV_LEN properly
- i2c: xlp9xx: Check for Bus state before every transfer
- i2c: xlp9xx: Handle NACK on DATA properly

  * [18.04 FEAT] Add kvm_stat from kernel tree (LP: #1734130)
- tools/kvm_stat: simplify the sortkey function
- tools/kvm_stat: use a namedtuple for storing the values
- tools/kvm_stat: use a more pythonic way to iterate over dictionaries
- tools/kvm_stat:

[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-23 Thread Frank Heimes 
** Changed in: ubuntu-power-systems
   Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1762913

Title:
  [OPAL] Assert fail:
  core/mem_region.c:447:lock_held_by_me(>free_list_lock)

Status in The Ubuntu-power-systems project:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Bionic:
  Fix Committed

Bug description:
  == Comment: #0 - Application Cdeadmin  -
  2018-04-03 05:20:56 ==

  == Comment: #1 - Application Cdeadmin <> - 2018-04-05 01:30:56 ==
  --- Comment From pridhiviraj 2018-04-05 01:30:25 EDT ---
  The disto needs 47712a921bb781caf69fca9eae43be19968816cb this level of 
commits need to be backported as suggested by Nick piggin.

  == Comment: #2 - PAWAN K. SINGH <> - 2018-04-06 03:35:49 ==
  which is 
  >>>

  From 47712a921bb781caf69fca9eae43be19968816cb Mon Sep 17 00:00:00 2001
  From: Nicholas Piggin 
  Date: Wed, 17 Jan 2018 22:47:22 +1000
  Subject: [PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  The powerpc NMI IPIs may not be recoverable if they are taken in
  some sections of code, and also there have been and still are issues
  with taking NMIs (in KVM guest code, in firmware, etc) which makes them
  a bit dangerous to use.

  Generic code like softlockup detector and rcu stall detectors really
  hammer on trigger_*_backtrace, which has lead to further problems
  because we've implemented it with the NMI.

  So stop providing NMI backtraces for now. Importantly, the powerpc code
  uses NMI IPIs in crash/debug, and the SMP hardlockup watchdog. So if the
  softlockup and rcu hang detection traces are not being printed because
  the CPU is stuck with interrupts off, then the hard lockup watchdog
  should get it with the NMI IPI.

  Fixes: 2104180a5369 ("powerpc/64s: implement arch-specific hardlockup 
watchdog")
  Signed-off-by: Nicholas Piggin 
  Signed-off-by: Michael Ellerman 
  ---
   arch/powerpc/include/asm/nmi.h |  4 
   arch/powerpc/kernel/watchdog.c | 22 --
   2 files changed, 26 deletions(-)

  diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
  index e97f586..9c80939 100644
  --- a/arch/powerpc/include/asm/nmi.h
  +++ b/arch/powerpc/include/asm/nmi.h
  @@ -4,10 +4,6 @@
   
   #ifdef CONFIG_PPC_WATCHDOG
   extern void arch_touch_nmi_watchdog(void);
  -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  -bool exclude_self);
  -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  -
   #else
   static inline void arch_touch_nmi_watchdog(void) {}
   #endif
  diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
  index 87da80c..3963baa 100644
  --- a/arch/powerpc/kernel/watchdog.c
  +++ b/arch/powerpc/kernel/watchdog.c
  @@ -393,25 +393,3 @@ int __init watchdog_nmi_probe(void)
}
return 0;
   }
  -
  -static void handle_backtrace_ipi(struct pt_regs *regs)
  -{
  - nmi_cpu_backtrace(regs);
  -}
  -
  -static void raise_backtrace_ipi(cpumask_t *mask)
  -{
  - unsigned int cpu;
  -
  - for_each_cpu(cpu, mask) {
  - if (cpu == smp_processor_id())
  - handle_backtrace_ipi(NULL);
  - else
  - smp_send_nmi_ipi(cpu, handle_backtrace_ipi, 100);
  - }
  -}
  -
  -void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
  -{
  - nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  -}
  -- 
  2.7.4

  
  >>>

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[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-17 Thread Joseph Salisbury 
I removed the Artful bug task per comment #4.

** No longer affects: linux (Ubuntu Artful)

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Title:
  [OPAL] Assert fail:
  core/mem_region.c:447:lock_held_by_me(>free_list_lock)

Status in The Ubuntu-power-systems project:
  In Progress
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Bionic:
  Fix Committed

Bug description:
  == Comment: #0 - Application Cdeadmin  -
  2018-04-03 05:20:56 ==

  == Comment: #1 - Application Cdeadmin <> - 2018-04-05 01:30:56 ==
  --- Comment From pridhiviraj 2018-04-05 01:30:25 EDT ---
  The disto needs 47712a921bb781caf69fca9eae43be19968816cb this level of 
commits need to be backported as suggested by Nick piggin.

  == Comment: #2 - PAWAN K. SINGH <> - 2018-04-06 03:35:49 ==
  which is 
  >>>

  From 47712a921bb781caf69fca9eae43be19968816cb Mon Sep 17 00:00:00 2001
  From: Nicholas Piggin 
  Date: Wed, 17 Jan 2018 22:47:22 +1000
  Subject: [PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  The powerpc NMI IPIs may not be recoverable if they are taken in
  some sections of code, and also there have been and still are issues
  with taking NMIs (in KVM guest code, in firmware, etc) which makes them
  a bit dangerous to use.

  Generic code like softlockup detector and rcu stall detectors really
  hammer on trigger_*_backtrace, which has lead to further problems
  because we've implemented it with the NMI.

  So stop providing NMI backtraces for now. Importantly, the powerpc code
  uses NMI IPIs in crash/debug, and the SMP hardlockup watchdog. So if the
  softlockup and rcu hang detection traces are not being printed because
  the CPU is stuck with interrupts off, then the hard lockup watchdog
  should get it with the NMI IPI.

  Fixes: 2104180a5369 ("powerpc/64s: implement arch-specific hardlockup 
watchdog")
  Signed-off-by: Nicholas Piggin 
  Signed-off-by: Michael Ellerman 
  ---
   arch/powerpc/include/asm/nmi.h |  4 
   arch/powerpc/kernel/watchdog.c | 22 --
   2 files changed, 26 deletions(-)

  diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
  index e97f586..9c80939 100644
  --- a/arch/powerpc/include/asm/nmi.h
  +++ b/arch/powerpc/include/asm/nmi.h
  @@ -4,10 +4,6 @@
   
   #ifdef CONFIG_PPC_WATCHDOG
   extern void arch_touch_nmi_watchdog(void);
  -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  -bool exclude_self);
  -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  -
   #else
   static inline void arch_touch_nmi_watchdog(void) {}
   #endif
  diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
  index 87da80c..3963baa 100644
  --- a/arch/powerpc/kernel/watchdog.c
  +++ b/arch/powerpc/kernel/watchdog.c
  @@ -393,25 +393,3 @@ int __init watchdog_nmi_probe(void)
}
return 0;
   }
  -
  -static void handle_backtrace_ipi(struct pt_regs *regs)
  -{
  - nmi_cpu_backtrace(regs);
  -}
  -
  -static void raise_backtrace_ipi(cpumask_t *mask)
  -{
  - unsigned int cpu;
  -
  - for_each_cpu(cpu, mask) {
  - if (cpu == smp_processor_id())
  - handle_backtrace_ipi(NULL);
  - else
  - smp_send_nmi_ipi(cpu, handle_backtrace_ipi, 100);
  - }
  -}
  -
  -void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
  -{
  - nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  -}
  -- 
  2.7.4

  
  >>>

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[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-12 Thread Seth Forshee 
** Changed in: linux (Ubuntu Bionic)
   Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1762913

Title:
  [OPAL] Assert fail:
  core/mem_region.c:447:lock_held_by_me(>free_list_lock)

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

Bug description:
  == Comment: #0 - Application Cdeadmin  -
  2018-04-03 05:20:56 ==

  == Comment: #1 - Application Cdeadmin <> - 2018-04-05 01:30:56 ==
  --- Comment From pridhiviraj 2018-04-05 01:30:25 EDT ---
  The disto needs 47712a921bb781caf69fca9eae43be19968816cb this level of 
commits need to be backported as suggested by Nick piggin.

  == Comment: #2 - PAWAN K. SINGH <> - 2018-04-06 03:35:49 ==
  which is 
  >>>

  From 47712a921bb781caf69fca9eae43be19968816cb Mon Sep 17 00:00:00 2001
  From: Nicholas Piggin 
  Date: Wed, 17 Jan 2018 22:47:22 +1000
  Subject: [PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  The powerpc NMI IPIs may not be recoverable if they are taken in
  some sections of code, and also there have been and still are issues
  with taking NMIs (in KVM guest code, in firmware, etc) which makes them
  a bit dangerous to use.

  Generic code like softlockup detector and rcu stall detectors really
  hammer on trigger_*_backtrace, which has lead to further problems
  because we've implemented it with the NMI.

  So stop providing NMI backtraces for now. Importantly, the powerpc code
  uses NMI IPIs in crash/debug, and the SMP hardlockup watchdog. So if the
  softlockup and rcu hang detection traces are not being printed because
  the CPU is stuck with interrupts off, then the hard lockup watchdog
  should get it with the NMI IPI.

  Fixes: 2104180a5369 ("powerpc/64s: implement arch-specific hardlockup 
watchdog")
  Signed-off-by: Nicholas Piggin 
  Signed-off-by: Michael Ellerman 
  ---
   arch/powerpc/include/asm/nmi.h |  4 
   arch/powerpc/kernel/watchdog.c | 22 --
   2 files changed, 26 deletions(-)

  diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
  index e97f586..9c80939 100644
  --- a/arch/powerpc/include/asm/nmi.h
  +++ b/arch/powerpc/include/asm/nmi.h
  @@ -4,10 +4,6 @@
   
   #ifdef CONFIG_PPC_WATCHDOG
   extern void arch_touch_nmi_watchdog(void);
  -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  -bool exclude_self);
  -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  -
   #else
   static inline void arch_touch_nmi_watchdog(void) {}
   #endif
  diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
  index 87da80c..3963baa 100644
  --- a/arch/powerpc/kernel/watchdog.c
  +++ b/arch/powerpc/kernel/watchdog.c
  @@ -393,25 +393,3 @@ int __init watchdog_nmi_probe(void)
}
return 0;
   }
  -
  -static void handle_backtrace_ipi(struct pt_regs *regs)
  -{
  - nmi_cpu_backtrace(regs);
  -}
  -
  -static void raise_backtrace_ipi(cpumask_t *mask)
  -{
  - unsigned int cpu;
  -
  - for_each_cpu(cpu, mask) {
  - if (cpu == smp_processor_id())
  - handle_backtrace_ipi(NULL);
  - else
  - smp_send_nmi_ipi(cpu, handle_backtrace_ipi, 100);
  - }
  -}
  -
  -void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
  -{
  - nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  -}
  -- 
  2.7.4

  
  >>>

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[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-11 Thread Joseph Salisbury 
The Bionic request has been sent.  However, because Artful is a stable
release, it requires testing before submitting a SRU request.

I built an Artful test kernel with commit 
47712a921bb781caf69fca9eae43be19968816cb.  The test kernel can be downloaded 
from:
http://kernel.ubuntu.com/~jsalisbury/lp1762913

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

Note, to test this kernel, you need to install both the linux-image and
linux-image-extra .deb packages.

Thanks in advance!

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Title:
  [OPAL] Assert fail:
  core/mem_region.c:447:lock_held_by_me(>free_list_lock)

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
Status in linux source package in Bionic:
  In Progress

Bug description:
  == Comment: #0 - Application Cdeadmin  -
  2018-04-03 05:20:56 ==

  == Comment: #1 - Application Cdeadmin <> - 2018-04-05 01:30:56 ==
  --- Comment From pridhiviraj 2018-04-05 01:30:25 EDT ---
  The disto needs 47712a921bb781caf69fca9eae43be19968816cb this level of 
commits need to be backported as suggested by Nick piggin.

  == Comment: #2 - PAWAN K. SINGH <> - 2018-04-06 03:35:49 ==
  which is 
  >>>

  From 47712a921bb781caf69fca9eae43be19968816cb Mon Sep 17 00:00:00 2001
  From: Nicholas Piggin 
  Date: Wed, 17 Jan 2018 22:47:22 +1000
  Subject: [PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  The powerpc NMI IPIs may not be recoverable if they are taken in
  some sections of code, and also there have been and still are issues
  with taking NMIs (in KVM guest code, in firmware, etc) which makes them
  a bit dangerous to use.

  Generic code like softlockup detector and rcu stall detectors really
  hammer on trigger_*_backtrace, which has lead to further problems
  because we've implemented it with the NMI.

  So stop providing NMI backtraces for now. Importantly, the powerpc code
  uses NMI IPIs in crash/debug, and the SMP hardlockup watchdog. So if the
  softlockup and rcu hang detection traces are not being printed because
  the CPU is stuck with interrupts off, then the hard lockup watchdog
  should get it with the NMI IPI.

  Fixes: 2104180a5369 ("powerpc/64s: implement arch-specific hardlockup 
watchdog")
  Signed-off-by: Nicholas Piggin 
  Signed-off-by: Michael Ellerman 
  ---
   arch/powerpc/include/asm/nmi.h |  4 
   arch/powerpc/kernel/watchdog.c | 22 --
   2 files changed, 26 deletions(-)

  diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
  index e97f586..9c80939 100644
  --- a/arch/powerpc/include/asm/nmi.h
  +++ b/arch/powerpc/include/asm/nmi.h
  @@ -4,10 +4,6 @@
   
   #ifdef CONFIG_PPC_WATCHDOG
   extern void arch_touch_nmi_watchdog(void);
  -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  -bool exclude_self);
  -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  -
   #else
   static inline void arch_touch_nmi_watchdog(void) {}
   #endif
  diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
  index 87da80c..3963baa 100644
  --- a/arch/powerpc/kernel/watchdog.c
  +++ b/arch/powerpc/kernel/watchdog.c
  @@ -393,25 +393,3 @@ int __init watchdog_nmi_probe(void)
}
return 0;
   }
  -
  -static void handle_backtrace_ipi(struct pt_regs *regs)
  -{
  - nmi_cpu_backtrace(regs);
  -}
  -
  -static void raise_backtrace_ipi(cpumask_t *mask)
  -{
  - unsigned int cpu;
  -
  - for_each_cpu(cpu, mask) {
  - if (cpu == smp_processor_id())
  - handle_backtrace_ipi(NULL);
  - else
  - smp_send_nmi_ipi(cpu, handle_backtrace_ipi, 100);
  - }
  -}
  -
  -void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
  -{
  - nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  -}
  -- 
  2.7.4

  
  >>>

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[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-11 Thread Joseph Salisbury 
Bionic request:
https://lists.ubuntu.com/archives/kernel-team/2018-April/091528.html

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Title:
  [OPAL] Assert fail:
  core/mem_region.c:447:lock_held_by_me(>free_list_lock)

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
Status in linux source package in Bionic:
  In Progress

Bug description:
  == Comment: #0 - Application Cdeadmin  -
  2018-04-03 05:20:56 ==

  == Comment: #1 - Application Cdeadmin <> - 2018-04-05 01:30:56 ==
  --- Comment From pridhiviraj 2018-04-05 01:30:25 EDT ---
  The disto needs 47712a921bb781caf69fca9eae43be19968816cb this level of 
commits need to be backported as suggested by Nick piggin.

  == Comment: #2 - PAWAN K. SINGH <> - 2018-04-06 03:35:49 ==
  which is 
  >>>

  From 47712a921bb781caf69fca9eae43be19968816cb Mon Sep 17 00:00:00 2001
  From: Nicholas Piggin 
  Date: Wed, 17 Jan 2018 22:47:22 +1000
  Subject: [PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  The powerpc NMI IPIs may not be recoverable if they are taken in
  some sections of code, and also there have been and still are issues
  with taking NMIs (in KVM guest code, in firmware, etc) which makes them
  a bit dangerous to use.

  Generic code like softlockup detector and rcu stall detectors really
  hammer on trigger_*_backtrace, which has lead to further problems
  because we've implemented it with the NMI.

  So stop providing NMI backtraces for now. Importantly, the powerpc code
  uses NMI IPIs in crash/debug, and the SMP hardlockup watchdog. So if the
  softlockup and rcu hang detection traces are not being printed because
  the CPU is stuck with interrupts off, then the hard lockup watchdog
  should get it with the NMI IPI.

  Fixes: 2104180a5369 ("powerpc/64s: implement arch-specific hardlockup 
watchdog")
  Signed-off-by: Nicholas Piggin 
  Signed-off-by: Michael Ellerman 
  ---
   arch/powerpc/include/asm/nmi.h |  4 
   arch/powerpc/kernel/watchdog.c | 22 --
   2 files changed, 26 deletions(-)

  diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
  index e97f586..9c80939 100644
  --- a/arch/powerpc/include/asm/nmi.h
  +++ b/arch/powerpc/include/asm/nmi.h
  @@ -4,10 +4,6 @@
   
   #ifdef CONFIG_PPC_WATCHDOG
   extern void arch_touch_nmi_watchdog(void);
  -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  -bool exclude_self);
  -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  -
   #else
   static inline void arch_touch_nmi_watchdog(void) {}
   #endif
  diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
  index 87da80c..3963baa 100644
  --- a/arch/powerpc/kernel/watchdog.c
  +++ b/arch/powerpc/kernel/watchdog.c
  @@ -393,25 +393,3 @@ int __init watchdog_nmi_probe(void)
}
return 0;
   }
  -
  -static void handle_backtrace_ipi(struct pt_regs *regs)
  -{
  - nmi_cpu_backtrace(regs);
  -}
  -
  -static void raise_backtrace_ipi(cpumask_t *mask)
  -{
  - unsigned int cpu;
  -
  - for_each_cpu(cpu, mask) {
  - if (cpu == smp_processor_id())
  - handle_backtrace_ipi(NULL);
  - else
  - smp_send_nmi_ipi(cpu, handle_backtrace_ipi, 100);
  - }
  -}
  -
  -void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
  -{
  - nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  -}
  -- 
  2.7.4

  
  >>>

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[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-11 Thread Frank Heimes 
** Changed in: ubuntu-power-systems
   Status: Triaged => In Progress

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https://bugs.launchpad.net/bugs/1762913

Title:
  [OPAL] Assert fail:
  core/mem_region.c:447:lock_held_by_me(>free_list_lock)

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
Status in linux source package in Bionic:
  In Progress

Bug description:
  == Comment: #0 - Application Cdeadmin  -
  2018-04-03 05:20:56 ==

  == Comment: #1 - Application Cdeadmin <> - 2018-04-05 01:30:56 ==
  --- Comment From pridhiviraj 2018-04-05 01:30:25 EDT ---
  The disto needs 47712a921bb781caf69fca9eae43be19968816cb this level of 
commits need to be backported as suggested by Nick piggin.

  == Comment: #2 - PAWAN K. SINGH <> - 2018-04-06 03:35:49 ==
  which is 
  >>>

  From 47712a921bb781caf69fca9eae43be19968816cb Mon Sep 17 00:00:00 2001
  From: Nicholas Piggin 
  Date: Wed, 17 Jan 2018 22:47:22 +1000
  Subject: [PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  The powerpc NMI IPIs may not be recoverable if they are taken in
  some sections of code, and also there have been and still are issues
  with taking NMIs (in KVM guest code, in firmware, etc) which makes them
  a bit dangerous to use.

  Generic code like softlockup detector and rcu stall detectors really
  hammer on trigger_*_backtrace, which has lead to further problems
  because we've implemented it with the NMI.

  So stop providing NMI backtraces for now. Importantly, the powerpc code
  uses NMI IPIs in crash/debug, and the SMP hardlockup watchdog. So if the
  softlockup and rcu hang detection traces are not being printed because
  the CPU is stuck with interrupts off, then the hard lockup watchdog
  should get it with the NMI IPI.

  Fixes: 2104180a5369 ("powerpc/64s: implement arch-specific hardlockup 
watchdog")
  Signed-off-by: Nicholas Piggin 
  Signed-off-by: Michael Ellerman 
  ---
   arch/powerpc/include/asm/nmi.h |  4 
   arch/powerpc/kernel/watchdog.c | 22 --
   2 files changed, 26 deletions(-)

  diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
  index e97f586..9c80939 100644
  --- a/arch/powerpc/include/asm/nmi.h
  +++ b/arch/powerpc/include/asm/nmi.h
  @@ -4,10 +4,6 @@
   
   #ifdef CONFIG_PPC_WATCHDOG
   extern void arch_touch_nmi_watchdog(void);
  -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  -bool exclude_self);
  -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  -
   #else
   static inline void arch_touch_nmi_watchdog(void) {}
   #endif
  diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
  index 87da80c..3963baa 100644
  --- a/arch/powerpc/kernel/watchdog.c
  +++ b/arch/powerpc/kernel/watchdog.c
  @@ -393,25 +393,3 @@ int __init watchdog_nmi_probe(void)
}
return 0;
   }
  -
  -static void handle_backtrace_ipi(struct pt_regs *regs)
  -{
  - nmi_cpu_backtrace(regs);
  -}
  -
  -static void raise_backtrace_ipi(cpumask_t *mask)
  -{
  - unsigned int cpu;
  -
  - for_each_cpu(cpu, mask) {
  - if (cpu == smp_processor_id())
  - handle_backtrace_ipi(NULL);
  - else
  - smp_send_nmi_ipi(cpu, handle_backtrace_ipi, 100);
  - }
  -}
  -
  -void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
  -{
  - nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  -}
  -- 
  2.7.4

  
  >>>

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[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-11 Thread Joseph Salisbury 
** Changed in: linux (Ubuntu)
   Status: New => In Progress

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

** Changed in: linux (Ubuntu)
 Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) => 
Joseph Salisbury (jsalisbury)

** Also affects: linux (Ubuntu Bionic)
   Importance: High
 Assignee: Joseph Salisbury (jsalisbury)
   Status: In Progress

** 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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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1762913

Title:
  [OPAL] Assert fail:
  core/mem_region.c:447:lock_held_by_me(>free_list_lock)

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

Bug description:
  == Comment: #0 - Application Cdeadmin  -
  2018-04-03 05:20:56 ==

  == Comment: #1 - Application Cdeadmin <> - 2018-04-05 01:30:56 ==
  --- Comment From pridhiviraj 2018-04-05 01:30:25 EDT ---
  The disto needs 47712a921bb781caf69fca9eae43be19968816cb this level of 
commits need to be backported as suggested by Nick piggin.

  == Comment: #2 - PAWAN K. SINGH <> - 2018-04-06 03:35:49 ==
  which is 
  >>>

  From 47712a921bb781caf69fca9eae43be19968816cb Mon Sep 17 00:00:00 2001
  From: Nicholas Piggin 
  Date: Wed, 17 Jan 2018 22:47:22 +1000
  Subject: [PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  The powerpc NMI IPIs may not be recoverable if they are taken in
  some sections of code, and also there have been and still are issues
  with taking NMIs (in KVM guest code, in firmware, etc) which makes them
  a bit dangerous to use.

  Generic code like softlockup detector and rcu stall detectors really
  hammer on trigger_*_backtrace, which has lead to further problems
  because we've implemented it with the NMI.

  So stop providing NMI backtraces for now. Importantly, the powerpc code
  uses NMI IPIs in crash/debug, and the SMP hardlockup watchdog. So if the
  softlockup and rcu hang detection traces are not being printed because
  the CPU is stuck with interrupts off, then the hard lockup watchdog
  should get it with the NMI IPI.

  Fixes: 2104180a5369 ("powerpc/64s: implement arch-specific hardlockup 
watchdog")
  Signed-off-by: Nicholas Piggin 
  Signed-off-by: Michael Ellerman 
  ---
   arch/powerpc/include/asm/nmi.h |  4 
   arch/powerpc/kernel/watchdog.c | 22 --
   2 files changed, 26 deletions(-)

  diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
  index e97f586..9c80939 100644
  --- a/arch/powerpc/include/asm/nmi.h
  +++ b/arch/powerpc/include/asm/nmi.h
  @@ -4,10 +4,6 @@
   
   #ifdef CONFIG_PPC_WATCHDOG
   extern void arch_touch_nmi_watchdog(void);
  -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  -bool exclude_self);
  -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  -
   #else
   static inline void arch_touch_nmi_watchdog(void) {}
   #endif
  diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
  index 87da80c..3963baa 100644
  --- a/arch/powerpc/kernel/watchdog.c
  +++ b/arch/powerpc/kernel/watchdog.c
  @@ -393,25 +393,3 @@ int __init watchdog_nmi_probe(void)
}
return 0;
   }
  -
  -static void handle_backtrace_ipi(struct pt_regs *regs)
  -{
  - nmi_cpu_backtrace(regs);
  -}
  -
  -static void raise_backtrace_ipi(cpumask_t *mask)
  -{
  - unsigned int cpu;
  -
  - for_each_cpu(cpu, mask) {
  - if (cpu == smp_processor_id())
  - handle_backtrace_ipi(NULL);
  - else
  - smp_send_nmi_ipi(cpu, handle_backtrace_ipi, 100);
  - }
  -}
  -
  -void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
  -{
  - nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  -}
  -- 
  2.7.4

  
  >>>

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[Kernel-packages] [Bug 1762913] Re: [OPAL] Assert fail: core/mem_region.c:447:lock_held_by_me(>free_list_lock)

2018-04-10 Thread Frank Heimes 
** Also affects: ubuntu-power-systems
   Importance: Undecided
   Status: New

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

** Changed in: ubuntu-power-systems
   Importance: Undecided => High

** Changed in: ubuntu-power-systems
 Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)

** Tags added: triage-g

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https://bugs.launchpad.net/bugs/1762913

Title:
  [OPAL] Assert fail:
  core/mem_region.c:447:lock_held_by_me(>free_list_lock)

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

Bug description:
  == Comment: #0 - Application Cdeadmin  -
  2018-04-03 05:20:56 ==

  == Comment: #1 - Application Cdeadmin <> - 2018-04-05 01:30:56 ==
  --- Comment From pridhiviraj 2018-04-05 01:30:25 EDT ---
  The disto needs 47712a921bb781caf69fca9eae43be19968816cb this level of 
commits need to be backported as suggested by Nick piggin.

  == Comment: #2 - PAWAN K. SINGH <> - 2018-04-06 03:35:49 ==
  which is 
  >>>

  From 47712a921bb781caf69fca9eae43be19968816cb Mon Sep 17 00:00:00 2001
  From: Nicholas Piggin 
  Date: Wed, 17 Jan 2018 22:47:22 +1000
  Subject: [PATCH] powerpc/watchdog: remove arch_trigger_cpumask_backtrace

  The powerpc NMI IPIs may not be recoverable if they are taken in
  some sections of code, and also there have been and still are issues
  with taking NMIs (in KVM guest code, in firmware, etc) which makes them
  a bit dangerous to use.

  Generic code like softlockup detector and rcu stall detectors really
  hammer on trigger_*_backtrace, which has lead to further problems
  because we've implemented it with the NMI.

  So stop providing NMI backtraces for now. Importantly, the powerpc code
  uses NMI IPIs in crash/debug, and the SMP hardlockup watchdog. So if the
  softlockup and rcu hang detection traces are not being printed because
  the CPU is stuck with interrupts off, then the hard lockup watchdog
  should get it with the NMI IPI.

  Fixes: 2104180a5369 ("powerpc/64s: implement arch-specific hardlockup 
watchdog")
  Signed-off-by: Nicholas Piggin 
  Signed-off-by: Michael Ellerman 
  ---
   arch/powerpc/include/asm/nmi.h |  4 
   arch/powerpc/kernel/watchdog.c | 22 --
   2 files changed, 26 deletions(-)

  diff --git a/arch/powerpc/include/asm/nmi.h b/arch/powerpc/include/asm/nmi.h
  index e97f586..9c80939 100644
  --- a/arch/powerpc/include/asm/nmi.h
  +++ b/arch/powerpc/include/asm/nmi.h
  @@ -4,10 +4,6 @@
   
   #ifdef CONFIG_PPC_WATCHDOG
   extern void arch_touch_nmi_watchdog(void);
  -extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  -bool exclude_self);
  -#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  -
   #else
   static inline void arch_touch_nmi_watchdog(void) {}
   #endif
  diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
  index 87da80c..3963baa 100644
  --- a/arch/powerpc/kernel/watchdog.c
  +++ b/arch/powerpc/kernel/watchdog.c
  @@ -393,25 +393,3 @@ int __init watchdog_nmi_probe(void)
}
return 0;
   }
  -
  -static void handle_backtrace_ipi(struct pt_regs *regs)
  -{
  - nmi_cpu_backtrace(regs);
  -}
  -
  -static void raise_backtrace_ipi(cpumask_t *mask)
  -{
  - unsigned int cpu;
  -
  - for_each_cpu(cpu, mask) {
  - if (cpu == smp_processor_id())
  - handle_backtrace_ipi(NULL);
  - else
  - smp_send_nmi_ipi(cpu, handle_backtrace_ipi, 100);
  - }
  -}
  -
  -void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self)
  -{
  - nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
  -}
  -- 
  2.7.4

  
  >>>

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