Created attachment 181321 [details] dmesg.txt [ 1614.416934] vmwrite error: reg 6820 value 6 (err 1) [ 1614.416939] CPU: 1 PID: 15701 Comm: qemu-system-x86 Not tainted 4.1.0+ #7 [ 1614.416940] Hardware name: LENOVO 2356BG6/2356BG6, BIOS G7ET94WW (2.54 ) 04/30/2013 [ 1614.416941] 0000000000000000 000000006138f41b ffff880007d1fc98 ffffffff8166ab0d [ 1614.416943] 0000000000000000 ffff880007c78000 ffff880007d1fca8 ffffffffa082121a [ 1614.416945] ffff880007d1fcb8 ffffffffa082123f ffff880007d1fcc8 ffffffffa08215ba [ 1614.416946] Call Trace: [ 1614.416952] [<ffffffff8166ab0d>] dump_stack+0x45/0x57 [ 1614.416961] [<ffffffffa082121a>] vmwrite_error+0x2a/0x30 [kvm_intel] [ 1614.416963] [<ffffffffa082123f>] vmcs_writel+0x1f/0x30 [kvm_intel] [ 1614.416966] [<ffffffffa08215ba>] vmx_set_rflags+0x3a/0x40 [kvm_intel] [ 1614.416978] [<ffffffffa07a97fa>] __kvm_set_rflags+0x4a/0x60 [kvm] [ 1614.416985] [<ffffffffa07af7a0>] x86_emulate_instruction+0x590/0x740 [kvm] [ 1614.416988] [<ffffffff810863b1>] ? __set_task_blocked+0x41/0xa0 [ 1614.416995] [<ffffffffa07afc6c>] complete_emulated_pio+0x3c/0x60 [kvm] [ 1614.417003] [<ffffffffa07b34bc>] kvm_arch_vcpu_ioctl_run+0x3cc/0x420 [kvm] [ 1614.417009] [<ffffffffa079b81e>] kvm_vcpu_ioctl+0x33e/0x600 [kvm] [ 1614.417011] [<ffffffff81204fa4>] do_vfs_ioctl+0x2c4/0x4a0 [ 1614.417013] [<ffffffff8129e05d>] ? selinux_file_ioctl+0x4d/0xc0 [ 1614.417015] [<ffffffff812051f9>] SyS_ioctl+0x79/0x90 [ 1614.417017] [<ffffffff8167126e>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 1614.417020] vmwrite error: reg c08 value 0 (err 1) [ 1614.417021] CPU: 1 PID: 15701 Comm: qemu-system-x86 Not tainted 4.1.0+ #7 [ 1614.417022] Hardware name: LENOVO 2356BG6/2356BG6, BIOS G7ET94WW (2.54 ) 04/30/2013 [ 1614.417023] 0000000000000000 000000006138f41b ffff880007d1fc78 ffffffff8166ab0d [ 1614.417024] 0000000000000000 ffff880007c78000 ffff880007d1fc88 ffffffffa082121a [ 1614.417026] ffff880007d1fc98 ffffffffa082123f ffff880007d1fcd8 ffffffffa0823bdc [ 1614.417027] Call Trace: [ 1614.417029] [<ffffffff8166ab0d>] dump_stack+0x45/0x57 [ 1614.417032] [<ffffffffa082121a>] vmwrite_error+0x2a/0x30 [kvm_intel] [ 1614.417034] [<ffffffffa082123f>] vmcs_writel+0x1f/0x30 [kvm_intel] [ 1614.417036] [<ffffffffa0823bdc>] vmx_save_host_state+0x1ac/0x1e0 [kvm_intel] [ 1614.417043] [<ffffffffa07ac577>] vcpu_enter_guest+0x4f7/0xdb0 [kvm] [ 1614.417050] [<ffffffffa07af7a0>] ? x86_emulate_instruction+0x590/0x740 [kvm] [ 1614.417051] [<ffffffff810863b1>] ? __set_task_blocked+0x41/0xa0 [ 1614.417058] [<ffffffffa07b33e5>] kvm_arch_vcpu_ioctl_run+0x2f5/0x420 [kvm] [ 1614.417063] [<ffffffffa079b81e>] kvm_vcpu_ioctl+0x33e/0x600 [kvm] [ 1614.417065] [<ffffffff81204fa4>] do_vfs_ioctl+0x2c4/0x4a0 [ 1614.417067] [<ffffffff8129e05d>] ? selinux_file_ioctl+0x4d/0xc0 [ 1614.417069] [<ffffffff812051f9>] SyS_ioctl+0x79/0x90 [ 1614.417070] [<ffffffff8167126e>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 1614.417071] vmwrite error: reg c0a value 0 (err 1) [ 1614.417073] CPU: 1 PID: 15701 Comm: qemu-system-x86 Not tainted 4.1.0+ #7 [ 1614.417073] Hardware name: LENOVO 2356BG6/2356BG6, BIOS G7ET94WW (2.54 ) 04/30/2013 [ 1614.417074] 0000000000000000 000000006138f41b ffff880007d1fc78 ffffffff8166ab0d [ 1614.417075] 0000000000000000 ffff880007c78000 ffff880007d1fc88 ffffffffa082121a [ 1614.417077] ffff880007d1fc98 ffffffffa082123f ffff880007d1fcd8 ffffffffa0823acb [ 1614.417078] Call Trace: [ 1614.417080] [<ffffffff8166ab0d>] dump_stack+0x45/0x57 [ 1614.417082] [<ffffffffa082121a>] vmwrite_error+0x2a/0x30 [kvm_intel] [ 1614.417084] [<ffffffffa082123f>] vmcs_writel+0x1f/0x30 [kvm_intel] [ 1614.417087] [<ffffffffa0823acb>] vmx_save_host_state+0x9b/0x1e0 [kvm_intel] [ 1614.417093] [<ffffffffa07ac577>] vcpu_enter_guest+0x4f7/0xdb0 [kvm] [ 1614.417099] [<ffffffffa07af7a0>] ? x86_emulate_instruction+0x590/0x740 [kvm] [ 1614.417100] [<ffffffff810863b1>] ? __set_task_blocked+0x41/0xa0 [ 1614.417107] [<ffffffffa07b33e5>] kvm_arch_vcpu_ioctl_run+0x2f5/0x420 [kvm] [ 1614.417112] [<ffffffffa079b81e>] kvm_vcpu_ioctl+0x33e/0x600 [kvm] [ 1614.417114] [<ffffffff81204fa4>] do_vfs_ioctl+0x2c4/0x4a0 [ 1614.417116] [<ffffffff8129e05d>] ? selinux_file_ioctl+0x4d/0xc0 [ 1614.417117] [<ffffffff812051f9>] SyS_ioctl+0x79/0x90 [ 1614.417119] [<ffffffff8167126e>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 1614.417120] vmwrite error: reg 6c06 value 7fab025dd700 (err 39704321) [ 1614.417121] CPU: 1 PID: 15701 Comm: qemu-system-x86 Not tainted 4.1.0+ #7 [ 1614.417122] Hardware name: LENOVO 2356BG6/2356BG6, BIOS G7ET94WW (2.54 ) 04/30/2013 [ 1614.417122] 0000000000000000 000000006138f41b ffff880007d1fc78 ffffffff8166ab0d [ 1614.417124] 0000000000000000 ffff880007c78000 ffff880007d1fc88 ffffffffa082121a [ 1614.417125] ffff880007d1fc98 ffffffffa082123f ffff880007d1fcd8 ffffffffa0823aff [ 1614.417127] Call Trace: [ 1614.417128] [<ffffffff8166ab0d>] dump_stack+0x45/0x57 [ 1614.417130] [<ffffffffa082121a>] vmwrite_error+0x2a/0x30 [kvm_intel] [ 1614.417133] [<ffffffffa082123f>] vmcs_writel+0x1f/0x30 [kvm_intel] [ 1614.417135] [<ffffffffa0823aff>] vmx_save_host_state+0xcf/0x1e0 [kvm_intel] [ 1614.417141] [<ffffffffa07ac577>] vcpu_enter_guest+0x4f7/0xdb0 [kvm] [ 1614.417147] [<ffffffffa07af7a0>] ? x86_emulate_instruction+0x590/0x740 [kvm] [ 1614.417148] [<ffffffff810863b1>] ? __set_task_blocked+0x41/0xa0 [ 1614.417155] [<ffffffffa07b33e5>] kvm_arch_vcpu_ioctl_run+0x2f5/0x420 [kvm] [ 1614.417160] [<ffffffffa079b81e>] kvm_vcpu_ioctl+0x33e/0x600 [kvm] [ 1614.417162] [<ffffffff81204fa4>] do_vfs_ioctl+0x2c4/0x4a0 [ 1614.417164] [<ffffffff8129e05d>] ? selinux_file_ioctl+0x4d/0xc0 [ 1614.417165] [<ffffffff812051f9>] SyS_ioctl+0x79/0x90 [ 1614.417167] [<ffffffff8167126e>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 1614.417168] vmwrite error: reg 6c08 value ffff88013e240000 (err 1042546689) [ 1614.417169] CPU: 1 PID: 15701 Comm: qemu-system-x86 Not tainted 4.1.0+ #7 [ 1614.417170] Hardware name: LENOVO 2356BG6/2356BG6, BIOS G7ET94WW (2.54 ) 04/30/2013 [ 1614.417170] 0000000000000000 000000006138f41b ffff880007d1fc78 ffffffff8166ab0d [ 1614.417172] 0000000000000000 ffff880007c78000 ffff880007d1fc88 ffffffffa082121a [ 1614.417173] ffff880007d1fc98 ffffffffa082123f ffff880007d1fcd8 ffffffffa0823b21 [ 1614.417174] Call Trace: [ 1614.417176] [<ffffffff8166ab0d>] dump_stack+0x45/0x57 [ 1614.417178] [<ffffffffa082121a>] vmwrite_error+0x2a/0x30 [kvm_intel] [ 1614.417180] [<ffffffffa082123f>] vmcs_writel+0x1f/0x30 [kvm_intel] [ 1614.417183] [<ffffffffa0823b21>] vmx_save_host_state+0xf1/0x1e0 [kvm_intel] [ 1614.417189] [<ffffffffa07ac577>] vcpu_enter_guest+0x4f7/0xdb0 [kvm] [ 1614.417195] [<ffffffffa07af7a0>] ? x86_emulate_instruction+0x590/0x740 [kvm] [ 1614.417196] [<ffffffff810863b1>] ? __set_task_blocked+0x41/0xa0 [ 1614.417202] [<ffffffffa07b33e5>] kvm_arch_vcpu_ioctl_run+0x2f5/0x420 [kvm] [ 1614.417208] [<ffffffffa079b81e>] kvm_vcpu_ioctl+0x33e/0x600 [kvm] [ 1614.417210] [<ffffffff81204fa4>] do_vfs_ioctl+0x2c4/0x4a0 [ 1614.417211] [<ffffffff8129e05d>] ? selinux_file_ioctl+0x4d/0xc0 [ 1614.417213] [<ffffffff812051f9>] SyS_ioctl+0x79/0x90 [ 1614.417214] [<ffffffff8167126e>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 1614.417217] vmwrite error: reg 681e value ffffffff813fb328 (err -2126531839) [ 1614.417218] CPU: 1 PID: 15701 Comm: qemu-system-x86 Not tainted 4.1.0+ #7 [ 1614.417219] Hardware name: LENOVO 2356BG6/2356BG6, BIOS G7ET94WW (2.54 ) 04/30/2013 [ 1614.417220] 0000000000000000 000000006138f41b ffff880007d1fc38 ffffffff8166ab0d [ 1614.417221] 0000000000000000 ffff880007c78000 ffff880007d1fc48 ffffffffa082121a [ 1614.417222] ffff880007d1fc58 ffffffffa082123f ffff880007d1fcd8 ffffffffa082c231 [ 1614.417224] Call Trace: [ 1614.417225] [<ffffffff8166ab0d>] dump_stack+0x45/0x57 [ 1614.417228] [<ffffffffa082121a>] vmwrite_error+0x2a/0x30 [kvm_intel] [ 1614.417230] [<ffffffffa082123f>] vmcs_writel+0x1f/0x30 [kvm_intel] [ 1614.417233] [<ffffffffa082c231>] vmx_vcpu_run+0x511/0x700 [kvm_intel] [ 1614.417239] [<ffffffffa07a2943>] ? kvm_set_shared_msr+0x83/0x90 [kvm] [ 1614.417245] [<ffffffffa07ac862>] vcpu_enter_guest+0x7e2/0xdb0 [kvm] [ 1614.417251] [<ffffffffa07af7a0>] ? x86_emulate_instruction+0x590/0x740 [kvm] [ 1614.417252] [<ffffffff810863b1>] ? __set_task_blocked+0x41/0xa0 [ 1614.417258] [<ffffffffa07b33e5>] kvm_arch_vcpu_ioctl_run+0x2f5/0x420 [kvm] [ 1614.417263] [<ffffffffa079b81e>] kvm_vcpu_ioctl+0x33e/0x600 [kvm] [ 1614.417265] [<ffffffff81204fa4>] do_vfs_ioctl+0x2c4/0x4a0 [ 1614.417267] [<ffffffff8129e05d>] ? selinux_file_ioctl+0x4d/0xc0 [ 1614.417268] [<ffffffff812051f9>] SyS_ioctl+0x79/0x90 [ 1614.417270] [<ffffffff8167126e>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 1614.417271] vmwrite error: reg 6c04 value 1427e0 (err 1320705) [ 1614.417272] CPU: 1 PID: 15701 Comm: qemu-system-x86 Not tainted 4.1.0+ #7 [ 1614.417273] Hardware name: LENOVO 2356BG6/2356BG6, BIOS G7ET94WW (2.54 ) 04/30/2013 [ 1614.417273] 0000000000000000 000000006138f41b ffff880007d1fc38 ffffffff8166ab0d [ 1614.417275] 0000000000000000 00000000001427e0 ffff880007d1fc48 ffffffffa082121a [ 1614.417276] ffff880007d1fc58 ffffffffa082123f ffff880007d1fcd8 ffffffffa082c286 [ 1614.417277] Call Trace: [ 1614.417279] [<ffffffff8166ab0d>] dump_stack+0x45/0x57 [ 1614.417281] [<ffffffffa082121a>] vmwrite_error+0x2a/0x30 [kvm_intel] [ 1614.417284] [<ffffffffa082123f>] vmcs_writel+0x1f/0x30 [kvm_intel] [ 1614.417286] [<ffffffffa082c286>] vmx_vcpu_run+0x566/0x700 [kvm_intel] [ 1614.417292] [<ffffffffa07a2943>] ? kvm_set_shared_msr+0x83/0x90 [kvm] [ 1614.417298] [<ffffffffa07ac862>] vcpu_enter_guest+0x7e2/0xdb0 [kvm] [ 1614.417304] [<ffffffffa07af7a0>] ? x86_emulate_instruction+0x590/0x740 [kvm] [ 1614.417305] [<ffffffff810863b1>] ? __set_task_blocked+0x41/0xa0 [ 1614.417311] [<ffffffffa07b33e5>] kvm_arch_vcpu_ioctl_run+0x2f5/0x420 [kvm] [ 1614.417316] [<ffffffffa079b81e>] kvm_vcpu_ioctl+0x33e/0x600 [kvm] [ 1614.417318] [<ffffffff81204fa4>] do_vfs_ioctl+0x2c4/0x4a0 [ 1614.417320] [<ffffffff8129e05d>] ? selinux_file_ioctl+0x4d/0xc0 [ 1614.417321] [<ffffffff812051f9>] SyS_ioctl+0x79/0x90 [ 1614.417323] [<ffffffff8167126e>] entry_SYSCALL_64_fastpath+0x12/0x71
(Reposting this since Bugzilla refuses to post with an unregistered email id) Can you please provide a little bit more information ? When does the write error happen and what guest/host are you running ? If it's a regression, would it be possible for you to bisect it ? Is bug 100661 related to the same hardware ?
When does the write error happen and what guest/host are you running ? this error happen when the guest os is booting. the guest os kernel verison is also 4.1.0+. If it's a regression, would it be possible for you to bisect it ? yes,the old kernel version didn't have the bug. so i will try to find out which patch cause this error. Is bug 100661 related to the same hardware ? yes.
Created attachment 181741 [details] another one dmesg I have the encountered the same bug, guest OS - Windows 2012R2, the guest just after start goes into paused state. The attached dmesg dump contains guest/vms state. The kernel is linux (https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git) with top commit 9bdc771f2c29a11920f477fba05a58e23ee42554 Merge: 7df9ab8 ea7d521 Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Thu Jul 2 17:11:28 2015 -0700
Created attachment 181781 [details] With this patch(commit revert) the bug disappears Added patch - revert of commit 1cde2930e15473cb4dd7e5a07d83e605a969bd6e. I had tested twice - with revert bug disappears.
Fixed in 4.2-rc1 by: commit 2ecd9d29abb171d6e97a4f3eb29d7456a11401b7 Author: Peter Zijlstra <peterz@infradead.org> Date: Fri Jul 3 18:53:58 2015 +0200 sched, preempt_notifier: separate notifier registration from static_key inc/dec But this patch was not submitted for -stable.
The faulty patch, 1cde2930e15473cb4dd7e5a07d83e605a969bd6e, was never in a stable release.