[Kernel-packages] [Bug 1708399] Fix race local TLB flushing vs. context switch

2017-09-18 Thread bugproxy 
--- Comment (attachment only) From martin.schwidef...@de.ibm.com 2017-08-18 
06:51 EDT---


** Attachment added: "Fix race local TLB flushing vs. context switch"
   
https://bugs.launchpad.net/bugs/1708399/+attachment/4952096/+files/0002-s390-mm-fix-local-TLB-flushing-vs.-detach-of-an-mm-a.patch

-- 
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/1708399

Title:
  kernel panic -not syncing: Fatal exception: panic_on_oops

Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Zesty:
  Fix Released

Bug description:
  SRU justification:

  Impact: A race in context flushing is causing a kernel panic on the
  s390x architecture.

  Fix: Using a set of 3 patches (all restricted to arch code), one
  already upstream and the other 2 pending on linux-next. Regression
  risk should be low (limited to arch code and tested).

  Testcase: see below

  ---

  == Comment: #0 - QI YE  - 2017-08-02 04:11:25 ==
  ---Problem Description---
  Ubuntu got kernel panic

  ---uname output---
  #110-Ubuntu SMP Tue Jul 18 12:56:43 UTC 2017 s390x s390x s390x GNU/Linux

  ---Debugger Data---
  PID: 10991  TASK: 19872a0e8 CPU: 2   COMMAND: "hyperkube"
   LOWCORE INFO:
    -psw  : 0x0004c0018000 0x00115fa6
    -function : pcpu_delegate at 115fa6
    -prefix   : 0x7fe42000
    -cpu timer: 0x7ffab2827828aa50
    -clock cmp: 0xd2eb8b31445e4200
    -general registers:
   0x0004e001 0x001283b6
   0xc001 0x8380fcb8
   0x00115f9e 0x0056f6e2
   0x0004 0x00cf9070
   0x0001f3bfc000 0x00112fd8
   0x0001c72bb400 0x0002
   0x7fffc000 0x007c9ef0
   0x00115f9e 0x8380fc18
    -access registers:
   0x03ff 0x7910 00 00
   00 00 00 00
   00 00 00 00
   00 00 00 00
    -control registers:
   0x14066a12 0x7e6d81c7
   0x00011140 00
   0x2aef 0x0400
   0x5000 0x7e6d81c7
   00 00
   00 00
   00 0x00cfc007
   0xdb00 0x00011280
    -floating point registers:
   0x409c7e258000 0x401de4e0
   00 0x3fd24407ab0e073a
   0x3ff0 0x3fee
   0x3fef218f8a7a41a0 0x3fee
   0x0080 00
   0x03ff7f80 0x02aa4940e9e0
   0xd401 0x03ffe81fe110
   00 0x03fff2cfe638

   #0 [8380fc78] smp_find_processor_id at 1160f8
   #1 [8380fc90] machine_kexec at 1135d4
   #2 [8380fcb8] crash_kexec at 1fbb8a
   #3 [8380fd88] panic at 27d0e0
   #4 [8380fe28] die at 1142cc
   #5 [8380fe90] do_low_address at 12215e
   #6 [8380fea8] pgm_check_handler at 7c2ab4
   PSW:  070520018000 02aa267e0e42 (user space)
   GPRS:   02aa2c4fd690 0001
     02aa2c4fd690 03ff7fffee38  0002
     00029c0f 00c42001ea00 0001 0001
     00c42001c5c8 00c42082c1a0 02aa2666325e 03ff7fffed90

  Contact Information = Chee Ye / y...@cn.ibm.com

  Stack trace output:
   no

  Oops output:
   [43200.761465] docker0: port 10(vethb9132e9) entered forwarding state
  [50008.560926] hrtimer: interrupt took 1698076 ns
  [123483.768984] systemd[1]: apt-daily.timer: Adding 7h 34min 22.582204s 
random time.
  [123483.930058] systemd[1]: apt-daily.timer: Adding 2h 18min 14.857162s 
random time.
  [123484.064879] systemd[1]: apt-daily.timer: Adding 10h 46min 2.301756s 
random time.
  [123484.824760] systemd[1]: apt-daily.timer: Adding 6h 16min 22.178655s 
random time.
  [153113.703126] conntrack: generic helper won't handle protocol 47. Please 
consider loading the specific helper module.
  [477085.704538] Low-address protection: 0004 ilc:2 [#1] SMP
  [477085.704551] Modules linked in: xt_physdev veth xt_recent xt_comment 
xt_mark xt_nat ipt_MASQUERADE nf_nat_masquerade_ipv4 xfrm_user xfrm_algo 
iptable_nat nf_nat_ipv4 xt_addrtype nf_nat br_netfilter bridge stp llc aufs 
ipt_REJECT nf_reject_ipv4 xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 
xt_conntrack nf_conntrack iptable_filter ip_tables x_tables ghash_s390 prng 
aes_s390 des_s390 des_generic sha512_s390 qeth_l2 sha256_s390 qeth sha1_s390 
qdio sha_common ccwgroup vmur dasd_eckd_mod dasd_mod
  [477085.705522] CPU: 2 PID: 10991 Comm: hyperkube Not tainted

[Kernel-packages] [Bug 1708399] Fix race local TLB flushing vs. context switch

2017-09-18 Thread bugproxy 
--- Comment (attachment only) From martin.schwidef...@de.ibm.com 2017-08-18 
06:51 EDT---


** Attachment added: "Fix race local TLB flushing vs. context switch"
   
https://bugs.launchpad.net/bugs/1708399/+attachment/4952068/+files/0002-s390-mm-fix-local-TLB-flushing-vs.-detach-of-an-mm-a.patch

-- 
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/1708399

Title:
  kernel panic -not syncing: Fatal exception: panic_on_oops

Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Zesty:
  Fix Released

Bug description:
  SRU justification:

  Impact: A race in context flushing is causing a kernel panic on the
  s390x architecture.

  Fix: Using a set of 3 patches (all restricted to arch code), one
  already upstream and the other 2 pending on linux-next. Regression
  risk should be low (limited to arch code and tested).

  Testcase: see below

  ---

  == Comment: #0 - QI YE  - 2017-08-02 04:11:25 ==
  ---Problem Description---
  Ubuntu got kernel panic

  ---uname output---
  #110-Ubuntu SMP Tue Jul 18 12:56:43 UTC 2017 s390x s390x s390x GNU/Linux

  ---Debugger Data---
  PID: 10991  TASK: 19872a0e8 CPU: 2   COMMAND: "hyperkube"
   LOWCORE INFO:
    -psw  : 0x0004c0018000 0x00115fa6
    -function : pcpu_delegate at 115fa6
    -prefix   : 0x7fe42000
    -cpu timer: 0x7ffab2827828aa50
    -clock cmp: 0xd2eb8b31445e4200
    -general registers:
   0x0004e001 0x001283b6
   0xc001 0x8380fcb8
   0x00115f9e 0x0056f6e2
   0x0004 0x00cf9070
   0x0001f3bfc000 0x00112fd8
   0x0001c72bb400 0x0002
   0x7fffc000 0x007c9ef0
   0x00115f9e 0x8380fc18
    -access registers:
   0x03ff 0x7910 00 00
   00 00 00 00
   00 00 00 00
   00 00 00 00
    -control registers:
   0x14066a12 0x7e6d81c7
   0x00011140 00
   0x2aef 0x0400
   0x5000 0x7e6d81c7
   00 00
   00 00
   00 0x00cfc007
   0xdb00 0x00011280
    -floating point registers:
   0x409c7e258000 0x401de4e0
   00 0x3fd24407ab0e073a
   0x3ff0 0x3fee
   0x3fef218f8a7a41a0 0x3fee
   0x0080 00
   0x03ff7f80 0x02aa4940e9e0
   0xd401 0x03ffe81fe110
   00 0x03fff2cfe638

   #0 [8380fc78] smp_find_processor_id at 1160f8
   #1 [8380fc90] machine_kexec at 1135d4
   #2 [8380fcb8] crash_kexec at 1fbb8a
   #3 [8380fd88] panic at 27d0e0
   #4 [8380fe28] die at 1142cc
   #5 [8380fe90] do_low_address at 12215e
   #6 [8380fea8] pgm_check_handler at 7c2ab4
   PSW:  070520018000 02aa267e0e42 (user space)
   GPRS:   02aa2c4fd690 0001
     02aa2c4fd690 03ff7fffee38  0002
     00029c0f 00c42001ea00 0001 0001
     00c42001c5c8 00c42082c1a0 02aa2666325e 03ff7fffed90

  Contact Information = Chee Ye / y...@cn.ibm.com

  Stack trace output:
   no

  Oops output:
   [43200.761465] docker0: port 10(vethb9132e9) entered forwarding state
  [50008.560926] hrtimer: interrupt took 1698076 ns
  [123483.768984] systemd[1]: apt-daily.timer: Adding 7h 34min 22.582204s 
random time.
  [123483.930058] systemd[1]: apt-daily.timer: Adding 2h 18min 14.857162s 
random time.
  [123484.064879] systemd[1]: apt-daily.timer: Adding 10h 46min 2.301756s 
random time.
  [123484.824760] systemd[1]: apt-daily.timer: Adding 6h 16min 22.178655s 
random time.
  [153113.703126] conntrack: generic helper won't handle protocol 47. Please 
consider loading the specific helper module.
  [477085.704538] Low-address protection: 0004 ilc:2 [#1] SMP
  [477085.704551] Modules linked in: xt_physdev veth xt_recent xt_comment 
xt_mark xt_nat ipt_MASQUERADE nf_nat_masquerade_ipv4 xfrm_user xfrm_algo 
iptable_nat nf_nat_ipv4 xt_addrtype nf_nat br_netfilter bridge stp llc aufs 
ipt_REJECT nf_reject_ipv4 xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 
xt_conntrack nf_conntrack iptable_filter ip_tables x_tables ghash_s390 prng 
aes_s390 des_s390 des_generic sha512_s390 qeth_l2 sha256_s390 qeth sha1_s390 
qdio sha_common ccwgroup vmur dasd_eckd_mod dasd_mod
  [477085.705522] CPU: 2 PID: 10991 Comm: hyperkube Not tainted

[Kernel-packages] [Bug 1708399] Fix race local TLB flushing vs. context switch

2017-08-18 Thread bugproxy 
--- Comment (attachment only) From martin.schwidef...@de.ibm.com 2017-08-18 
06:51 EDT---


** Attachment added: "Fix race local TLB flushing vs. context switch"
   
https://bugs.launchpad.net/bugs/1708399/+attachment/4934704/+files/0002-s390-mm-fix-local-TLB-flushing-vs.-detach-of-an-mm-a.patch

-- 
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/1708399

Title:
  kernel panic -not syncing: Fatal exception: panic_on_oops

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

Bug description:
  == Comment: #0 - QI YE  - 2017-08-02 04:11:25 ==
  ---Problem Description---
  Ubuntu got kernel panic

  ---uname output---
  #110-Ubuntu SMP Tue Jul 18 12:56:43 UTC 2017 s390x s390x s390x GNU/Linux
   
  ---Debugger Data---
  PID: 10991  TASK: 19872a0e8 CPU: 2   COMMAND: "hyperkube"
   LOWCORE INFO:
-psw  : 0x0004c0018000 0x00115fa6
-function : pcpu_delegate at 115fa6
-prefix   : 0x7fe42000
-cpu timer: 0x7ffab2827828aa50
-clock cmp: 0xd2eb8b31445e4200
-general registers:
   0x0004e001 0x001283b6
   0xc001 0x8380fcb8
   0x00115f9e 0x0056f6e2
   0x0004 0x00cf9070
   0x0001f3bfc000 0x00112fd8
   0x0001c72bb400 0x0002
   0x7fffc000 0x007c9ef0
   0x00115f9e 0x8380fc18
-access registers:
   0x03ff 0x7910 00 00
   00 00 00 00
   00 00 00 00
   00 00 00 00
-control registers:
   0x14066a12 0x7e6d81c7
   0x00011140 00
   0x2aef 0x0400
   0x5000 0x7e6d81c7
   00 00
   00 00
   00 0x00cfc007
   0xdb00 0x00011280
-floating point registers:
   0x409c7e258000 0x401de4e0
   00 0x3fd24407ab0e073a
   0x3ff0 0x3fee
   0x3fef218f8a7a41a0 0x3fee
   0x0080 00
   0x03ff7f80 0x02aa4940e9e0
   0xd401 0x03ffe81fe110
   00 0x03fff2cfe638

   #0 [8380fc78] smp_find_processor_id at 1160f8
   #1 [8380fc90] machine_kexec at 1135d4
   #2 [8380fcb8] crash_kexec at 1fbb8a
   #3 [8380fd88] panic at 27d0e0
   #4 [8380fe28] die at 1142cc
   #5 [8380fe90] do_low_address at 12215e
   #6 [8380fea8] pgm_check_handler at 7c2ab4
   PSW:  070520018000 02aa267e0e42 (user space)
   GPRS:   02aa2c4fd690 0001
 02aa2c4fd690 03ff7fffee38  0002
 00029c0f 00c42001ea00 0001 0001
 00c42001c5c8 00c42082c1a0 02aa2666325e 03ff7fffed90 
   
  Contact Information = Chee Ye / y...@cn.ibm.com 
   
  Stack trace output:
   no
   
  Oops output:
   [43200.761465] docker0: port 10(vethb9132e9) entered forwarding state
  [50008.560926] hrtimer: interrupt took 1698076 ns
  [123483.768984] systemd[1]: apt-daily.timer: Adding 7h 34min 22.582204s 
random time.
  [123483.930058] systemd[1]: apt-daily.timer: Adding 2h 18min 14.857162s 
random time.
  [123484.064879] systemd[1]: apt-daily.timer: Adding 10h 46min 2.301756s 
random time.
  [123484.824760] systemd[1]: apt-daily.timer: Adding 6h 16min 22.178655s 
random time.
  [153113.703126] conntrack: generic helper won't handle protocol 47. Please 
consider loading the specific helper module.
  [477085.704538] Low-address protection: 0004 ilc:2 [#1] SMP
  [477085.704551] Modules linked in: xt_physdev veth xt_recent xt_comment 
xt_mark xt_nat ipt_MASQUERADE nf_nat_masquerade_ipv4 xfrm_user xfrm_algo 
iptable_nat nf_nat_ipv4 xt_addrtype nf_nat br_netfilter bridge stp llc aufs 
ipt_REJECT nf_reject_ipv4 xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 
xt_conntrack nf_conntrack iptable_filter ip_tables x_tables ghash_s390 prng 
aes_s390 des_s390 des_generic sha512_s390 qeth_l2 sha256_s390 qeth sha1_s390 
qdio sha_common ccwgroup vmur dasd_eckd_mod dasd_mod
  [477085.705522] CPU: 2 PID: 10991 Comm: hyperkube Not tainted 
4.4.0-87-generic #110-Ubuntu
  [477085.705525] task: 00019872a0e8 ti: 8380c000 task.ti: 
8380c000
  [477085.705529] User PSW : 070520018000 02aa267e0e42
  [477085.705532]R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:1 AS:0 CC:2 PM:0 
EA:3
  User GPRS:   02aa2c4fd690 
0001
  [477085.705539]02aa2c4fd690 03ff7fffee38