[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-03-11 Thread Frank Heimes
Since Kernel 5.0 landed in disco's release pocket today, I'm changing
the status to Fix Released.

** Changed in: linux (Ubuntu Disco)
   Status: Fix Committed => Fix Released

** Changed in: ubuntu-z-systems
   Status: Fix Committed => Fix Released

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Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Fix Released
Status in Ubuntu on IBM z Systems:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Disco:
  Fix Released

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables configured (established 16384 bind 16384)
  [0.508269] UDP hash 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-03-06 Thread Frank Heimes
Just double checked and can confirm that the commits "virtio-balloon:
tweak config_changed implementation", "virtio: don't allocate vqs when
names[i] = NULL" and "virtio_pci: use queue idx instead of array idx to
set up the vq" landed in disco-proposed kernel "Ubuntu-5.0.0-7.8" (as
"bf4dc0b", "a229989" and "ddbeac0").

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Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Fix Released
Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Disco:
  Fix Committed

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-02-04 Thread Frank Heimes
Info: Smallest common upstream kernel level that includes all these 3
patches is v5.0-rc3

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Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Fix Released
Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Disco:
  Fix Committed

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables configured (established 16384 bind 16384)
  [0.508269] UDP hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508287] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508336] NET: Registered protocol family 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-20 Thread Frank Heimes
** Also affects: ubuntu-z-systems
   Importance: Undecided
   Status: New

** Changed in: ubuntu-z-systems
   Status: New => Fix Committed

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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/1811259

Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Fix Released
Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Disco:
  Fix Committed

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables configured (established 16384 bind 16384)
  [0.508269] UDP hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508287] UDP-Lite hash table entries: 1024 (order: 3, 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-18 Thread Seth Forshee
** Changed in: linux (Ubuntu Disco)
   Status: Triaged => Fix Committed

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https://bugs.launchpad.net/bugs/1811259

Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Disco:
  Fix Committed

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables configured (established 16384 bind 16384)
  [0.508269] UDP hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508287] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508336] NET: Registered protocol family 1
  [0.508343] NET: Registered protocol family 44
  [

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-16 Thread Bug Watch Updater
** Changed in: linux
   Status: Confirmed => Fix Released

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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/1811259

Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Fix Released
Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Disco:
  Triaged

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables configured (established 16384 bind 16384)
  [0.508269] UDP hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508287] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508336] NET: Registered protocol family 1
  [0.508343] NET: Registered protocol family 44
  [0.508374] Unpacking 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-16 Thread Colin Ian King
Fixes sent to kt mailing list for review

-- 
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/1811259

Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Disco:
  Triaged

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables configured (established 16384 bind 16384)
  [0.508269] UDP hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508287] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508336] NET: Registered protocol family 1
  [0.508343] NET: Registered protocol family 44
  [0.508374] Unpacking initramfs...
  [0.742412] 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-16 Thread Frank Heimes
** Tags added: s390x

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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/1811259

Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Disco:
  Triaged

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables configured (established 16384 bind 16384)
  [0.508269] UDP hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508287] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508336] NET: Registered protocol family 1
  [0.508343] NET: Registered protocol family 44
  [0.508374] Unpacking initramfs...
  [0.742412] Freeing initrd memory: 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-16 Thread Colin Ian King
The following fixes in vhost.git fix the issue:

https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?h
=linux-next=bf4dc0b2beebfd9338df7c0bcf473b356f67cf66

https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?h
=linux-next=a229989d975eb926076307c1f2f5e4c6111768e7

https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git/commit/?h
=linux-next=ddbeac07a39a81d82331a312d0578fab94fccbf1

** Changed in: linux (Ubuntu Disco)
 Assignee: (unassigned) => Colin Ian King (colin-king)

-- 
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/1811259

Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Disco:
  Triaged

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-15 Thread Colin Ian King
** Bug watch added: Linux Kernel Bug Tracker #202283
   https://bugzilla.kernel.org/show_bug.cgi?id=202283

** Also affects: linux via
   https://bugzilla.kernel.org/show_bug.cgi?id=202283
   Importance: Unknown
   Status: Unknown

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1811259

Title:
  4.20 kernel on s390x VM crashes

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Disco:
  Triaged

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables configured (established 16384 bind 16384)
  [0.508269] UDP hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508287] UDP-Lite hash table 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-15 Thread Bug Watch Updater
Launchpad has imported 1 comments from the remote bug at
https://bugzilla.kernel.org/show_bug.cgi?id=202283.

If you reply to an imported comment from within Launchpad, your comment
will be sent to the remote bug automatically. Read more about
Launchpad's inter-bugtracker facilities at
https://help.launchpad.net/InterBugTracking.


On 2019-01-15T14:47:50+00:00 colin.king wrote:

s390x inside VM, hitting the following kernel panic on 4.20:

[ 0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
[ 0.394838] setup.289988: Linux is running under KVM in 64-bit mode
[ 0.394846] setup.b050d0: The maximum memory size is 2048MB
[ 0.394866] numa.196305: NUMA mode: plain
[ 0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
[ 0.394999] Write protected kernel read-only data: 10464k
[ 0.395034] Zone ranges:
[ 0.395035] DMA [mem 0x-0x7fff]
[ 0.395037] Normal empty
[ 0.395038] Movable zone start for each node
[ 0.395039] Early memory node ranges
[ 0.395041] node 0: [mem 0x-0x7fff]
[ 0.395042] Initmem setup node 0 [mem 0x-0x7fff]
[ 0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 d32000 
u102400
[ 0.413824] Built 1 zonelists, mobility grouping on. Total pages: 516096
[ 0.413825] Policy zone: DMA
[ 0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
[ 0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
[ 0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 with 
crng_init=0
[ 0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
[ 0.450434] ftrace: allocating 27385 entries in 107 pages
[ 0.473325] rcu: Hierarchical RCU implementation.
[ 0.473327] rcu: RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
[ 0.473328] Tasks RCU enabled.
[ 0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
[ 0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
[ 0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
[ 0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
[ 0.475558] printk: console [ttyS1] enabled
[ 0.475623] pid_max: default: 32768 minimum: 301
[ 0.475658] LSM: Security Framework initializing
[ 0.475660] Yama: becoming mindful.
[ 0.475677] AppArmor: AppArmor initialized
[ 0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
[ 0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
[ 0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.476726] rcu: Hierarchical SRCU implementation.
[ 0.476927] smp: Bringing up secondary CPUs ...
[ 0.477181] smp: Brought up 1 node, 2 CPUs
[ 0.477549] devtmpfs: initialized
[ 0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
[ 0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
[ 0.478105] NET: Registered protocol family 16
[ 0.478134] audit: initializing netlink subsys (disabled)
[ 0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
[ 0.478222] Spectre V2 mitigation: execute trampolines
[ 0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
[ 0.479623] SCSI subsystem initialized
[ 0.479856] NetLabel: Initializing
[ 0.479858] NetLabel: domain hash size = 128
[ 0.479859] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO
[ 0.479871] NetLabel: unlabeled traffic allowed by default
[ 0.507362] VFS: Disk quotas dquot_6.6.0
[ 0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.507486] AppArmor: AppArmor Filesystem Enabled
[ 0.507847] NET: Registered protocol family 2
[ 0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 16384 
bytes)
[ 0.507994] TCP established hash table entries: 16384 (order: 5, 131072 bytes)
[ 0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
[ 0.508235] TCP: Hash tables configured (established 16384 bind 16384)
[ 0.508269] UDP hash table entries: 1024 (order: 3, 32768 bytes)
[ 0.508287] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
[ 0.508336] NET: Registered protocol family 1
[ 0.508343] NET: Registered protocol family 44
[ 0.508374] Unpacking initramfs...
[ 0.742412] Freeing initrd memory: 15824K
[ 0.742685] kvm-s390: SIE not available
[ 0.742706] hypfs.7f5705: The hardware system does not support hypfs
[ 0.742714] hypfs.7a79f0: Initialization of hypfs failed with rc=-61
[ 0.743110] Initialise system trusted keyrings
[ 0.743119] Key type blacklist registered
[ 0.743140] 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-15 Thread Colin Ian King
Finally bisected:

git bisect good
86a559787e6f5cf662c081363f64a20cad654195 is the first bad commit
commit 86a559787e6f5cf662c081363f64a20cad654195
Author: Wei Wang 
Date:   Mon Aug 27 09:32:17 2018 +0800

virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT

Negotiation of the VIRTIO_BALLOON_F_FREE_PAGE_HINT feature indicates the
support of reporting hints of guest free pages to host via virtio-balloon.
Currenlty, only free page blocks of MAX_ORDER - 1 are reported. They are
obtained one by one from the mm free list via the regular allocation
function.

Host requests the guest to report free page hints by sending a new cmd id
to the guest via the free_page_report_cmd_id configuration register. When
the guest starts to report, it first sends a start cmd to host via the
free page vq, which acks to host the cmd id received. When the guest
finishes reporting free pages, a stop cmd is sent to host via the vq.
Host may also send a stop cmd id to the guest to stop the reporting.

VIRTIO_BALLOON_CMD_ID_STOP: Host sends this cmd to stop the guest
reporting.
VIRTIO_BALLOON_CMD_ID_DONE: Host sends this cmd to tell the guest that
the reported pages are ready to be freed.

Why does the guest free the reported pages when host tells it is ready to
free?
This is because freeing pages appears to be expensive for live migration.
free_pages() dirties memory very quickly and makes the live migraion not
converge in some cases. So it is good to delay the free_page operation
when the migration is done, and host sends a command to guest about that.

Why do we need the new VIRTIO_BALLOON_CMD_ID_DONE, instead of reusing
VIRTIO_BALLOON_CMD_ID_STOP?
This is because live migration is usually done in several rounds. At the
end of each round, host needs to send a VIRTIO_BALLOON_CMD_ID_STOP cmd to
the guest to stop (or say pause) the reporting. The guest resumes the
reporting when it receives a new command id at the beginning of the next
round. So we need a new cmd id to distinguish between "stop reporting" and
"ready to free the reported pages".

TODO:
- Add a batch page allocation API to amortize the allocation overhead.

Signed-off-by: Wei Wang 
Signed-off-by: Liang Li 
Cc: Michael S. Tsirkin 
Cc: Michal Hocko 
Cc: Andrew Morton 
Cc: Linus Torvalds 
Signed-off-by: Michael S. Tsirkin 

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Title:
  4.20 kernel on s390x VM crashes

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Disco:
  Triaged

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-14 Thread Colin Ian King
5.0-rc2 also fails to boot:

[0.761280] CPU: 0 PID: 7 Comm: kworker/u6:0 Not tainted 5.0.0-rc2 #1
[0.761282] Hardware name: IBM 2964 N63 400 (KVM/Linux)
[0.761288] Workqueue: events_unbound call_usermodehelper_exec_work
[0.761291] Krnl PSW : 0404e0018000 0016a360 
(release_task_stack+0x78/0x1b0)
[0.761297]R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 
RI:0 EA:3
[0.761301] Krnl GPRS: f000 01ee6320 0700 

[0.761303]fffc 7f26 7ff92300 
7f9e6790
[0.761306]0080 01c15d00 01cd9000 
0003
[0.761309]0008 008f1228 0016a3ae 
03e00034fb40
[0.761320] Krnl Code: 0016a34e: e320f0a4lg  
%r2,160(%r15)
[0.761320]0016a354: c004brcl0,16a354
[0.761320]   #0016a35a: e35003b4lg  %r5,944
[0.761320]   >0016a360: e3103514lg  
%r1,1296(%r3)
[0.761320]0016a366: a71b0118aghi%r1,280
[0.761320]0016a36a: b9040041lgr %r4,%r1
[0.761320]0016a36e: e3454004lg  
%r4,0(%r5,%r4)
[0.761320]0016a374: a74bfffcaghi%r4,-4
[0.761343] Call Trace:
[0.761346] ([<0016a3ae>] release_task_stack+0xc6/0x1b0)
[0.761352]  [<0019c914>] finish_task_switch+0x274/0x308 
[0.761356]  [<008deb4e>] __schedule+0x46e/0x8e8 
[0.761359]  [<008df00a>] schedule+0x42/0xa0 
[0.761363]  [<00173036>] do_wait+0x1f6/0x288 
[0.761366]  [<00174382>] kernel_wait4+0x9a/0x130 
[0.761370]  [<001887ac>] call_usermodehelper_exec_work+0x94/0xd8 
[0.761373]  [<0018c5d8>] process_one_work+0x278/0x4b8 
[0.761376]  [<0018c868>] worker_thread+0x50/0x4e0 
[0.761380]  [<001936ac>] kthread+0x144/0x160 
[0.761383]  [<008e3cc2>] kernel_thread_starter+0xa/0x10 
[0.761386]  [<008e3cb8>] kernel_thread_starter+0x0/0x10 
[0.761387] Last Breaking-Event-Address:
[0.761435]  [<0016a3ae>] release_task_stack+0xc6/0x1b0

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1811259

Title:
  4.20 kernel on s390x VM crashes

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Disco:
  Triaged

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-10 Thread Joseph Salisbury
** Changed in: linux (Ubuntu)
   Importance: Undecided => High

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

** Tags added: disco

** Also affects: linux (Ubuntu Disco)
   Importance: High
   Status: Triaged

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https://bugs.launchpad.net/bugs/1811259

Title:
  4.20 kernel on s390x VM crashes

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Disco:
  Triaged

Bug description:
  Booting with  4.20.0-2-generic on a s390x 2 CPU VM we hit a panic:

  [0.394835] Linux version 4.20.0-2-generic (buildd@bos02-s390x-015) (gcc 
version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)) #3-Ubuntu SMP Thu Jan 3 18:43:01 UTC 
2019 (Ubuntu 4.20.0-2.3-generic 4.20.0)
  [0.394838] setup.289988: Linux is running under KVM in 64-bit mode
  [0.394846] setup.b050d0: The maximum memory size is 2048MB
  [0.394866] numa.196305: NUMA mode: plain
  [0.394893] cpu.33a262: 2 configured CPUs, 0 standby CPUs
  [0.394999] Write protected kernel read-only data: 10464k
  [0.395034] Zone ranges:
  [0.395035]   DMA  [mem 0x-0x7fff]
  [0.395037]   Normal   empty
  [0.395038] Movable zone start for each node
  [0.395039] Early memory node ranges
  [0.395041]   node   0: [mem 0x-0x7fff]
  [0.395042] Initmem setup node 0 [mem 
0x-0x7fff]
  [0.413802] percpu: Embedded 25 pages/cpu @(ptrval) s62208 r8192 
d32000 u102400
  [0.413824] Built 1 zonelists, mobility grouping on.  Total pages: 516096
  [0.413825] Policy zone: DMA
  [0.413827] Kernel command line: root=LABEL=cloudimg-rootfs
  [0.450276] Memory: 2034164K/2097152K available (8116K kernel code, 1079K 
rwdata, 2344K rodata, 992K init, 772K bss, 62988K reserved, 0K cma-reserved)
  [0.450283] random: get_random_u64 called from kmem_cache_open+0x4c/0x4f0 
with crng_init=0
  [0.450432] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
  [0.450434] ftrace: allocating 27385 entries in 107 pages
  [0.473325] rcu: Hierarchical RCU implementation.
  [0.473327] rcu:   RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
  [0.473328]Tasks RCU enabled.
  [0.473329] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
  [0.473330] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
  [0.475371] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
  [0.475402] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
  [0.475558] printk: console [ttyS1] enabled
  [0.475623] pid_max: default: 32768 minimum: 301
  [0.475658] LSM: Security Framework initializing
  [0.475660] Yama: becoming mindful.
  [0.475677] AppArmor: AppArmor initialized
  [0.476134] Dentry cache hash table entries: 262144 (order: 9, 2097152 
bytes)
  [0.476352] Inode-cache hash table entries: 131072 (order: 8, 1048576 
bytes)
  [0.476370] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
  [0.476377] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 
bytes)
  [0.476726] rcu: Hierarchical SRCU implementation.
  [0.476927] smp: Bringing up secondary CPUs ...
  [0.477181] smp: Brought up 1 node, 2 CPUs
  [0.477549] devtmpfs: initialized
  [0.477882] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
  [0.477902] futex hash table entries: 1024 (order: 6, 262144 bytes)
  [0.478105] NET: Registered protocol family 16
  [0.478134] audit: initializing netlink subsys (disabled)
  [0.478183] audit: type=2000 audit(1547122707.960:1): state=initialized 
audit_enabled=0 res=1
  [0.478222] Spectre V2 mitigation: execute trampolines
  [0.479205] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
  [0.479623] SCSI subsystem initialized
  [0.479856] NetLabel: Initializing
  [0.479858] NetLabel:  domain hash size = 128
  [0.479859] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
  [0.479871] NetLabel:  unlabeled traffic allowed by default
  [0.507362] VFS: Disk quotas dquot_6.6.0
  [0.507378] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
  [0.507486] AppArmor: AppArmor Filesystem Enabled
  [0.507847] NET: Registered protocol family 2
  [0.507976] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
  [0.507994] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
  [0.508126] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
  [0.508235] TCP: Hash tables configured (established 16384 bind 16384)
  [0.508269] UDP hash table entries: 1024 (order: 3, 32768 bytes)
  [0.508287] UDP-Lite hash table entries: 1024 (order: 3, 32768 

[Kernel-packages] [Bug 1811259] Re: 4.20 kernel on s390x VM crashes

2019-01-10 Thread Colin Ian King
5.0-rc1, no dice:

[0.398768] Linux version 5.0.0-rc1+ (ubuntu@ckingvm1) (gcc version 8.2.0 
(Ubuntu 8.2.0-7ubuntu1)) #1 SMP Thu Jan 10 17:45:01 UTC 2019
[0.398770] setup: Linux is running under KVM in 64-bit mode
[0.398778] setup: The maximum memory size is 2048MB
[0.398799] numa: NUMA mode: plain
[0.398823] cpu: 2 configured CPUs, 0 standby CPUs
[0.398925] Write protected kernel read-only data: 10420k
[0.398958] Zone ranges:
[0.398959]   DMA  [mem 0x-0x7fff]
[0.398961]   Normal   empty
[0.398962] Movable zone start for each node
[0.398963] Early memory node ranges
[0.398964]   node   0: [mem 0x-0x7fff]
[0.398965] Initmem setup node 0 [mem 0x-0x7fff]
[0.416530] percpu: Embedded 25 pages/cpu @(ptrval) s61696 r8192 
d32512 u102400
[0.416551] Built 1 zonelists, mobility grouping on.  Total pages: 516096
[0.416552] Policy zone: DMA
[0.416553] Kernel command line: root=LABEL=cloudimg-rootfs
[0.452308] Memory: 2034240K/2097152K available (8092K kernel code, 1084K 
rwdata, 2324K rodata, 992K init, 776K bss, 62912K reserved, 0K cma-reserved)
[0.452316] random: get_random_u64 called from 
__kmem_cache_create+0x4c/0x5f0 with crng_init=0
[0.452464] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=3, Nodes=1
[0.452466] ftrace: allocating 27127 entries in 106 pages
[0.475936] rcu: Hierarchical RCU implementation.
[0.475938] rcu: RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=3.
[0.475939]  Tasks RCU enabled.
[0.475940] rcu: RCU calculated value of scheduler-enlistment delay is 10 
jiffies.
[0.475941] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=3
[0.478033] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3
[0.478069] clocksource: tod: mask: 0x max_cycles: 
0x3b0a9be803b0a9, max_idle_ns: 1805497147909793 ns
[0.478241] printk: console [ttyS1] enabled
[0.478311] pid_max: default: 32768 minimum: 301
[0.478345] LSM: Security Framework initializing
[0.478347] Yama: becoming mindful.
[0.478365] AppArmor: AppArmor initialized
[0.478805] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
[0.479032] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
[0.479050] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)
[0.479057] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes)
[0.479413] rcu: Hierarchical SRCU implementation.
[0.479629] smp: Bringing up secondary CPUs ...
[0.479884] smp: Brought up 1 node, 2 CPUs
[0.480226] devtmpfs: initialized
[0.480464] clocksource: jiffies: mask: 0x max_cycles: 0x, 
max_idle_ns: 1911260446275 ns
[0.480486] futex hash table entries: 1024 (order: 6, 262144 bytes)
[0.480692] NET: Registered protocol family 16
[0.480721] audit: initializing netlink subsys (disabled)
[0.480758] audit: type=2000 audit(1547126955.184:1): state=initialized 
audit_enabled=0 res=1
[0.480800] Spectre V2 mitigation: execute trampolines
[0.481735] HugeTLB registered 1.00 MiB page size, pre-allocated 0 pages
[0.482061] SCSI subsystem initialized
[0.482269] NetLabel: Initializing
[0.482270] NetLabel:  domain hash size = 128
[0.482271] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
[0.482283] NetLabel:  unlabeled traffic allowed by default
[0.511560] VFS: Disk quotas dquot_6.6.0
[0.511580] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[0.511690] AppArmor: AppArmor Filesystem Enabled
[0.511972] NET: Registered protocol family 2
[0.512106] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 
16384 bytes)
[0.512127] TCP established hash table entries: 16384 (order: 5, 131072 
bytes)
[0.512199] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)
[0.512381] TCP: Hash tables configured (established 16384 bind 16384)
[0.512414] UDP hash table entries: 1024 (order: 3, 32768 bytes)
[0.512433] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
[0.512477] NET: Registered protocol family 1
[0.512483] NET: Registered protocol family 44
[0.512518] Unpacking initramfs...
[0.747003] Freeing initrd memory: 15780K
[0.747282] kvm-s390: SIE not available
[0.747301] hypfs: The hardware system does not support hypfs
[0.747310] hypfs: Initialization of hypfs failed with rc=-61
[0.747678] Initialise system trusted keyrings
[0.747689] Key type blacklist registered
[0.747715] workingset: timestamp_bits=42 max_order=19 bucket_order=0
[0.749162] zbud: loaded
[0.749614] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[0.749785] fuse init (API version 7.28)
[0.773883] Key type asymmetric registered
[0.773886] Asymmetric key parser 'x509' registered
[0.773900] Block layer SCSI generic (bsg) driver