[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
Closing this bug since there is no activity or response for the last 3 months. Please re-open if you think this is still an issue that needs to be resolved. ** Changed in: ubuntu-power-systems Status: Incomplete => Invalid ** Changed in: linux (Ubuntu) Status: Incomplete => Invalid ** Changed in: linux (Ubuntu Bionic) Status: Incomplete => Invalid -- 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/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Invalid Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: Invalid Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 =
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
IBM, could you please test with the hwe (4.18) kernel and report back if this bug is still valid? -- 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/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Incomplete Status in linux package in Ubuntu: Incomplete Status in linux source package in Bionic: Incomplete Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr =
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Changed in: linux (Ubuntu) Assignee: Joseph Salisbury (jsalisbury) => Canonical Kernel Team (canonical-kernel-team) ** Changed in: linux (Ubuntu Bionic) Assignee: Joseph Salisbury (jsalisbury) => Canonical Kernel Team (canonical-kernel-team) -- 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/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Incomplete Status in linux package in Ubuntu: Incomplete Status in linux source package in Bionic: Incomplete Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 =
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Changed in: ubuntu-power-systems Importance: High => Medium -- 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/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Incomplete Status in linux package in Ubuntu: Incomplete Status in linux source package in Bionic: Incomplete Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr = c043b7fc
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
This bug has not had any activity in a while, can any update be provided? ** Changed in: linux (Ubuntu Bionic) Importance: High => Medium ** Changed in: linux (Ubuntu) Importance: High => Medium -- 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/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Incomplete Status in linux package in Ubuntu: Incomplete Status in linux source package in Bionic: Incomplete Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Changed in: linux (Ubuntu) Status: Triaged => Incomplete ** Changed in: linux (Ubuntu Bionic) Status: Triaged => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Incomplete Status in linux package in Ubuntu: Incomplete Status in linux source package in Bionic: Incomplete Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar=
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Changed in: ubuntu-power-systems Status: Triaged => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Incomplete Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr = c043b7fc
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
Hello, It looks like there has been allot of investigation for this bug. Have there been any commits identified that may resolve this bug? Upstream v4.18-rc1 is now available. Maybe this kernel could be tested to see if a "Reverse" bisect could identify a commit to fix the issue. http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.18-rc1/ Thanks! ** Changed in: linux (Ubuntu Bionic) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu) Assignee: Canonical Kernel Team (canonical-kernel-team) => Joseph Salisbury (jsalisbury) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 =
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Changed in: linux (Ubuntu) Status: New => Triaged ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Bionic) Importance: Undecided => High ** Changed in: linux (Ubuntu Bionic) Status: New => Triaged -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 =
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Tags removed: triage-g ** Tags added: triage-a -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: New Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr = c043b7fc __fsnotify_parent+0x7c/0x1a0 msr = 80009033 cr = 2800 ctr = c06252b0
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Changed in: ubuntu-power-systems Status: Incomplete => Triaged -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: New Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr = c043b7fc __fsnotify_parent+0x7c/0x1a0 msr = 80009033 cr = 2800
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Tags added: p9 -- 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/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Incomplete Status in linux package in Ubuntu: New Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr = c043b7fc __fsnotify_parent+0x7c/0x1a0 msr = 80009033 cr = 2800 ctr = c06252b0 xer =
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Changed in: linux (Ubuntu) Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) => Canonical Kernel Team (canonical-kernel-team) ** Changed in: linux (Ubuntu) Importance: Undecided => High -- 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/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Incomplete Status in linux package in Ubuntu: New Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Changed in: ubuntu-power-systems Status: Triaged => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Incomplete Status in linux package in Ubuntu: New Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr = c043b7fc __fsnotify_parent+0x7c/0x1a0 msr = 80009033 cr = 2800
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
--- Comment From mdr...@us.ibm.com 2018-05-13 20:45 EDT--- (In reply to comment #30) > Created attachment 127024 [details] > Patch to add extra tlbsyncs and ptesyncs > > Try this one instead of the "Patch to add extra tlbsyncs". Ben H pointed out > that it is ptesync which is important, not tlbsync (which is actually a > no-op, though architecturally required), so this version adds a ptesync to > the guest exit path as well as the tlbsync. Just a quick update, we noticed 2 other bugs pop up a few days ago where they hit very similar traces to what's been recorded here even without doing live migration. For instance Bug 167748 - LP1770784- ISST- LTE:KVM:Ubuntu1804:BostonLC:boslcp4g4:ubuntu1604:P8 compat: guest crashes in apparmor_file_alloc_security() [13244.120032] NIP [c0503788] aa_file_perm+0x238/0x4c0 [13244.120035] LR [c0503784] aa_file_perm+0x234/0x4c0 [13244.120035] Call Trace: [13244.120039] [c4ec7b90] [c0503784] aa_file_perm+0x234/0x4c0 (unreliable) [13244.120041] [c4ec7c90] [c04fe784] common_file_perm+0x134/0x250 [13244.120044] [c4ec7d10] [c048f088] security_file_permission+0x78/0x150 [13244.120047] [c4ec7d50] [c02e49ec] rw_verify_area+0x7c/0x190 [13244.120049] [c4ec7d90] [c02e4d4c] vfs_write+0x8c/0x230 [13244.120052] [c4ec7de0] [c02e5dbc] SyS_write+0x6c/0x110 [13244.120055] [c4ec7e30] [c0009484] system_call+0x38/0xe4 which has a similar beginning call trace to the initial bug reported here. And: Bug 167480 - ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g4:ubuntu1604:P8 compat guest crashed & enters into xmon after few hours of LTP run. [c002b1c13c10] c02faad8 path_openat+0x88/0x3c0 [c002b1c13c90] c02fca3c do_filp_open+0xfc/0x170 [c002b1c13db0] c02e31d0 do_sys_open+0x1c0/0x3b0 [c002b1c13e30] c0009484 system_call+0x38/0xe4 which is similar to the crash I saw with filp_close. The major things those bugs have in common with this one is both the guest and host SAN disks are using block multiqueue instead of legacy deadline/cfq schedulers, which was seen to have issues WRT to other patches like the one mentioned here: https://bugzilla.linux.ibm.com/show_bug.cgi?id=167294#c47 We started testing using last Ubuntu 4.15 with a set of patches that Ziviani put together there: https://github.com/jrziviani/linux-devel/commits/BLK_MQ_CPU but I was still eventually able to hit a crash. However, when I disabled blk-mq via "scsi_mod.use_blk_mq=n dm_mod.use_blk_mq=n" in host/guest I didn't see any crashes after 130 migrations. However, I did see IO errors + read-only filesystem after extended runs, which have also been seen elsewhere with no live migration involved. So there's a possibly the bug here is related to issues seen elsewhere without live migration, and some initial evidence to suggesting that the crashes may be related to blk-mq, but not enough to say anything for certain. Ziviani is currently doing some testing with upstream kernel. If that still has issues then will move to testing potential KVM fixes but want to rule out blk-mq first since the issue may not be specific to live migration. ** Bug watch added: bugzilla.linux.ibm.com/ #167294 https://bugzilla.linux.ibm.com/show_bug.cgi?id=167294 -- 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/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: New Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Changed in: ubuntu-power-systems Status: New => Triaged -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: New Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr = c043b7fc __fsnotify_parent+0x7c/0x1a0 msr = 80009033 cr = 2800 ctr =
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Description changed: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 - 1.boslcp3 & boslcp4 installed with latest kernel + 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] - pc: c00e4854: xmon_core+0x1f24/0x3520 - lr: c00e4850: xmon_core+0x1f20/0x3520 - sp: c004f8a234a0 -msr: 80041033 - current = 0xc004f89faf00 - paca= 0xc7a85800 softe: 0irq_happened: 0x01 - pid = 24028, comm = top + pc: c00e4854: xmon_core+0x1f24/0x3520 + lr: c00e4850: xmon_core+0x1f20/0x3520 + sp: c004f8a234a0 + msr: 80041033 + current = 0xc004f89faf00 + paca= 0xc7a85800 softe: 0irq_happened: 0x01 + pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr = c043b7fc __fsnotify_parent+0x7c/0x1a0 msr = 80009033 cr = 2800 ctr = c06252b0 xer = trap = 300 dar = 023c dsisr = 4000
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Tags added: kernel-da-key -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: New Status in linux package in Ubuntu: New Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 = c003242499c0 pc = c043b808 __fsnotify_parent+0x88/0x1a0 cfar= c03f9e78 dget_parent+0xe8/0x150 lr = c043b7fc __fsnotify_parent+0x7c/0x1a0 msr = 80009033 cr = 2800 ctr = c06252b0 xer =
[Kernel-packages] [Bug 1768115] Re: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160.
** Also affects: ubuntu-power-systems Importance: Undecided Status: New ** Changed in: ubuntu-power-systems Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team) ** Changed in: ubuntu-power-systems Importance: Undecided => High ** Tags added: triage-g -- 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/1768115 Title: ISST-LTE:KVM:Ubuntu1804:BostonLC:boslcp3g1: Migration guest running with IO stress crashed@security_file_permission+0xf4/0x160. Status in The Ubuntu-power-systems project: New Status in linux package in Ubuntu: New Bug description: Problem Description: Migration Guest running with IO stress crashed@security_file_permission+0xf4/0x160 after couple of migrations. Steps to re-create: Source host - boslcp3 Destination host - boslcp4 1.boslcp3 & boslcp4 installed with latest kernel root@boslcp3:~# uname -a Linux boslcp3 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# root@boslcp4:~# uname -a Linux boslcp4 4.15.0-20-generic #21+bug166588 SMP Thu Apr 26 15:05:59 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux root@boslcp3:~# 2. Installed guest boslcp3g1 with kernel and started LTP run from boslcp3 host root@boslcp3g1:~# uname -a Linux boslcp3g1 4.15.0-15-generic #16+bug166877 SMP Wed Apr 18 14:47:30 CDT 2018 ppc64le ppc64le ppc64le GNU/Linux 3. Started migrating boslcp3g1 guest from source to destination & viceversa. 4. After couple of migrations it crashed at boslcp4 & enters into xmon 8:mon> t [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> S msr= 80001033 sprg0 = pvr= 004e1202 sprg1 = c7a85800 dec= 591e3e03 sprg2 = c7a85800 sp = c004f8a234a0 sprg3 = 00010008 toc= c16eae00 dar = 023c srr0 = c00c355c srr1 = 80001033 dsisr = 4000 dscr = ppr = 0010 pir= 0011 amr= uamor = dpdes = tir = cir= fscr = 05000180 tar = pspb = mmcr0 = 8000 mmcr1 = mmcr2 = pmc1 = pmc2 = pmc3 = pmc4 = mmcra = siar = pmc5 = 026c sdar = sier = pmc6 = 0861 ebbhr = ebbrr = bescr = iamr = 4000 pidr = 0034 tidr = cpu 0x8: Vector: 700 (Program Check) at [c004f8a23220] pc: c00e4854: xmon_core+0x1f24/0x3520 lr: c00e4850: xmon_core+0x1f20/0x3520 sp: c004f8a234a0 msr: 80041033 current = 0xc004f89faf00 paca= 0xc7a85800 softe: 0irq_happened: 0x01 pid = 24028, comm = top Linux version 4.15.0-20-generic (buildd@bos02-ppc64el-002) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 (Ubuntu 4.15.0-20.21-generic 4.15.17) cpu 0x8: Exception 700 (Program Check) in xmon, returning to main loop [c004f8a23d20] c05a7674 security_file_permission+0xf4/0x160 [c004f8a23d60] c03d1d30 rw_verify_area+0x70/0x120 [c004f8a23d90] c03d375c vfs_read+0x8c/0x1b0 [c004f8a23de0] c03d3d88 SyS_read+0x68/0x110 [c004f8a23e30] c000b184 system_call+0x58/0x6c --- Exception: c01 (System Call) at 71f1779fe280 SP (7fffe99ece50) is in userspace 8:mon> r R00 = c043b7fc R16 = R01 = c004f8a23c90 R17 = ff70 R02 = c16eae00 R18 = 0a51b4bebfc8 R03 = c00279557200 R19 = 7fffe99edbb0 R04 = c003242499c0 R20 = 0a51b4c04db0 R05 = 0002 R21 = 0a51b4c20e90 R06 = 0004 R22 = 00040f00 R07 = ff81 R23 = 0a51b4c06560 R08 = ff80 R24 = ff80 R09 = R25 = 0a51b4bec2b8 R10 = R26 = 71f177bb0b20 R11 = R27 = R12 = 2000 R28 = c00279557200 R13 = c7a85800 R29 = c004c7734210 R14 = R30 = R15 = R31 =
