Created attachment 515234 [details] Kernel config Guest VM hungs if kernel 4.14.x on host and guest vm with attached config. I tried 4.14.8, 4.14.12, 4.14.13 with same issue. QEMU-KVM: app-emulation/qemu-2.10.1-r1 How to reproduce: - Compile and install kernel from gentoo-sources with attached kernel config. - Install compiled kernel on host and guest systems - Try to compile something big and wat some time (from couple of minutes to couple of hours) - Guest VM unresposive. Kernel hungs. [ 8204.339820] invalid opcode: 0000 [#1] SMP PTI [ 8204.341308] Modules linked in: netconsole rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache sunrpc binfmt_misc virtio_balloon virtio_net iTCO_wdt iTCO_vendor_support shpchp i2c_i801 lpc_ich input_leds intel_agp ghash_clmulni_intel btrfs xor zstd_compress raid6_pq zstd_decompress xxhash dm_crypt usbhid xhci_plat_hcd ohci_pci ohci_hcd uhci_hcd usb_storage ehci_pci ehci_hcd sg ata_generic sata_nv ata_piix sd_mod ahci libahci virtio_scsi xhci_pci xhci_hcd qxl libata drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops intel_gtt led_class scsi_mod ttm usbcore virtio_pci drm usb_common virtio_ring virtio agpgart [ 8204.347292] CPU: 1 PID: 8022 Comm: cc1plus Not tainted 4.14.14-gentoo #1 [ 8204.348022] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-1.fc27 04/01/2014 [ 8204.348676] task: ffff8c39fa703000 task.stack: ffffa0d3c1860000 [ 8204.349536] RIP: 0010:__list_del_entry_valid+0x81/0x90 [ 8204.350551] RSP: 0000:ffffa0d3c1863bf8 EFLAGS: 00010082 [ 8204.351494] RAX: 0000000000000054 RBX: 0000000000000370 RCX: 0000000000000000 [ 8204.352628] RDX: 0000000000000000 RSI: ffff8c3a2ae56538 RDI: ffff8c3a2ae56538 [ 8204.353508] RBP: ffff8c3a2b1ef000 R08: 0000000000000001 R09: 000000000000027c [ 8204.354488] R10: 0000000000000000 R11: 000000000000027c R12: 0000000000000010 [ 8204.355496] R13: ffffc64600c1ffc0 R14: 000000000000000a R15: ffffc64600c00020 [ 8204.356861] FS: 00007f39fb626400(0000) GS:ffff8c3a2ae40000(0000) knlGS:0000000000000000 [ 8204.357862] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8204.358893] CR2: 00007f39f9120000 CR3: 0000000035f58001 CR4: 00000000001606e0 [ 8204.359869] Call Trace: [ 8204.360812] ? __rmqueue+0xbd/0x570 [ 8204.361434] ? current_time+0x3b/0x70 [ 8204.362068] ? get_page_from_freelist+0xac9/0xbd0 [ 8204.362694] ? __alloc_pages_nodemask+0x103/0x260 [ 8204.363302] ? alloc_pages_vma+0x7c/0x1c0 [ 8204.363908] ? __handle_mm_fault+0xc46/0x1000 [ 8204.364534] ? handle_mm_fault+0xe7/0x190 [ 8204.365326] ? __do_page_fault+0x1c0/0x410 [ 8204.366371] ? async_page_fault+0x36/0x60 [ 8204.367075] ? async_page_fault+0x4c/0x60 [ 8204.367773] Code: a8 47 d8 86 e8 0f 0f c5 ff 0f 0b 48 89 fe 48 c7 c7 e0 47 d8 86 e8 fe 0e c5 ff 0f 0b 48 89 fe 48 c7 c7 20 48 d8 86 e8 ed 0e c5 ff <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 48 85 d2 41 55 41 [ 8204.369059] RIP: __list_del_entry_valid+0x81/0x90 RSP: ffffa0d3c1863bf8 [ 8204.369715] ---[ end trace 72be4cd0d441c6bf ]---
Here is the new again [ 8404.955744] invalid opcode: 0000 [#1] SMP [ 8404.956584] Modules linked in: netconsole rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache sunrpc binfmt_misc iTCO_wdt iTCO_vendor_support virtio_net virtio_balloon input_leds i2c_i801 intel_agp lpc_ich ghash_clmulni_intel shpchp btrfs xor zstd_compress raid6_pq zstd_decompress xxhash dm_crypt usbhid xhci_plat_hcd ohci_pci ohci_hcd uhci_hcd usb_storage ehci_pci ehci_hcd sg ata_generic sata_nv ata_piix sd_mod qxl ahci libahci drm_kms_helper virtio_scsi syscopyarea sysfillrect sysimgblt fb_sys_fops ttm xhci_pci libata xhci_hcd scsi_mod led_class virtio_pci virtio_ring usbcore drm virtio usb_common intel_gtt agpgart [ 8404.961382] CPU: 0 PID: 6482 Comm: kworker/0:2H Not tainted 4.14.13-gentoo #1 [ 8404.962183] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.10.2-1.fc27 04/01/2014 [ 8404.963091] task: ffffa3a5a18f0000 task.stack: ffffad9e4165c000 [ 8404.963961] RIP: 0010:__list_del_entry_valid+0x86/0x90 [ 8404.964837] RSP: 0018:ffffad9e4165fea0 EFLAGS: 00010086 [ 8404.965702] RAX: 0000000000000054 RBX: ffffa3a5aae33580 RCX: 0000000000000000 [ 8404.966564] RDX: 0000000000000000 RSI: ffffa3a5aae16538 RDI: ffffa3a5aae16538 [ 8404.967367] RBP: ffffad9e4165fea0 R08: 0000000000000001 R09: 0000000000000313 [ 8404.968258] R10: ffffa3a5aae1d100 R11: 0000000000000313 R12: ffffa3a5aae33580 [ 8404.969229] R13: ffffa3a59e6bc7b0 R14: ffffa3a5aae335a0 R15: ffffa3a59e6bc780 [ 8404.970089] FS: 0000000000000000(0000) GS:ffffa3a5aae00000(0000) knlGS:0000000000000000 [ 8404.970959] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8404.971822] CR2: 00000000000000b8 CR3: 000000000401c004 CR4: 00000000001606f0 [ 8404.972857] Call Trace: [ 8404.973790] worker_thread+0x110/0x3c0 [ 8404.974700] kthread+0x108/0x140 [ 8404.975670] ? process_one_work+0x380/0x380 [ 8404.976779] ? kthread_create_on_node+0x70/0x70 [ 8404.977752] ? SyS_exit_group+0x14/0x20 [ 8404.978599] ret_from_fork+0x1f/0x30 [ 8404.979553] Code: 78 40 d8 ba e8 0d 3b c4 ff 0f 0b 48 89 fe 48 c7 c7 b0 40 d8 ba e8 fc 3a c4 ff 0f 0b 48 89 fe 48 c7 c7 f0 40 d8 ba e8 eb 3a c4 ff <0f> 0b 90 90 90 90 90 90 90 90 55 48 85 d2 48 89 e5 41 56 41 55 [ 8404.982311] RIP: __list_del_entry_valid+0x86/0x90 RSP: ffffad9e4165fea0 [ 8404.983123] ---[ end trace 29abfd8cb53c692c ]--- [ 8404.983926] Kernel panic - not syncing: Fatal exception [ 8404.984928] Kernel Offset: 0x39000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 8404.985645] Rebooting in 1 seconds.. [ 8406.002651] ACPI MEMORY or I/O RESET_REG.
Sometimes I can see crashes of applications before kernel crash: [ 7726.832065] emerge[8621]: segfault at ab ip 00007f6d4ec8b29b sp 00007fffeac7f820 error 4 in libpython2.7.so.1.0[7f6d4ebf9000+1a8000] [ 7741.857922] ebuild.sh[7895]: segfault at 18 ip 00007fb7de9cea49 sp 00007ffd673ce530 error 4 in libc-2.25.so[7fb7de94b000+1b2000] [ 8045.178786] traps: seq[22965] trap invalid opcode ip:55b339e3a002 sp:7ffc4aa14618 error:0 in seq[55b339e30000+c000] [ 8045.209669] autom4te-2.69[22964]: segfault at 7faedcb0ff68 ip 00007faedcb0ff68 sp 00007ffdbb6b4180 error 7 in libperl.so.5.24.3[7faedc9cc000+1ed000] [ 8176.989699] traps: seq[26454] trap invalid opcode ip:55fbd5588002 sp:7ffdddc481b8 error:0 in seq[55fbd557e000+c000] [ 8177.184795] autom4te-2.69[26452]: segfault at 7f0137032f68 ip 00007f0137032f68 sp 00007ffef6cdfd10 error 7 in libperl.so.5.24.3[7f0136eef000+1ed000] [ 8178.060351] traps: seq[27150] trap invalid opcode ip:557dee012002 sp:7ffc4f63acd8 error:0 in seq[557dee008000+c000] [ 8178.068409] aclocal-1.15[27147]: segfault at 7fc8cc68bf68 ip 00007fc8cc68bf68 sp 00007ffcb032ee50 error 7 in libperl.so.5.24.3[7fc8cc548000+1ed000]
Can you please try with pti=off? Does it happen with one machine or it's reproducible on multiple ones? Try building the vanilla sources and please report upstream if it happens again.
>Can you please try with pti=off? I have configured kernel with CONFIG_PAGE_TABLE_ISOLATION=n CONFIG_RETPOLINE=n and still have kernel crash >Does it happen with one machine or it's reproducible on multiple ones? The bug appears with QEMU-KVM guests only. All of my 4 PC works fine.
The issue appears when I migrate from Kernel 4.9. With kernel 4.9.X no problems
Please try the vanilla 14.x sources and report upstream.
please write here the thread url link after reporting upstream
Upstream bug https://bugzilla.kernel.org/show_bug.cgi?id=198659
thanks you :)
you could follow Andrew Morton indication to send the bug to the mailing list ? please post the thread link if you did, I couldn't find it.
I can find only the https://marc.info/?l=linux-mm&m=151787609332462&w=2
any news ?
There no information from upstream kernel team.
The 4.14.31 kernel seems to work fine without issue
