https://bugzilla.kernel.org/show_bug.cgi?id=219085 Bug ID: 219085 Summary: kvm_spurious_fault in L1 when running a nested kvm instance on AMD Opteron_G5_qemu L0 Product: Virtualization Version: unspecified Hardware: All OS: Linux Status: NEW Severity: normal Priority: P3 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: ununpta@xxxxxxxxxxx Regression: No Hello, when I try to run `qemu-system-x86_64 -accel kvm` in L1 bash in linux kvm guest with kernel 6.10.0 x86_64, I get this message in L1 guest: [ 104.446685] kvm_amd: Nested Virtualization enabled [ 104.446688] kvm_amd: Nested Paging disabled [ 104.446690] kvm_amd: PMU virtualization is disabled [ 112.940705] clocksource: timekeeping watchdog on CPU0: hpet wd-wd read-back delay of 50500ns [ 112.940746] clocksource: wd-tsc-wd read-back delay of 1385000ns, clock-skew test skipped! [ 355.714362] unchecked MSR access error: WRMSR to 0xc0000080 (tried to write 0x0000000000001d01) at rIP: 0xffffffff9228a274 (native_write_msr+0x4/0x20) [ 355.714373] Call Trace: [ 355.714376] <TASK> [ 355.714379] ? ex_handler_msr+0xd3/0x150 [ 355.714381] ? fixup_exception+0x276/0x2e0 [ 355.714383] ? exc_general_protection+0x14f/0x440 [ 355.714388] ? asm_exc_general_protection+0x22/0x30 [ 355.714391] ? native_write_msr+0x4/0x20 [ 355.714397] svm_hardware_enable+0xd5/0x2f0 [kvm_amd] [ 355.714405] kvm_arch_hardware_enable+0xc7/0x280 [kvm] [ 355.714469] hardware_enable_nolock+0x1d/0x50 [kvm] [ 355.714489] smp_call_function_many_cond+0xcf/0x4d0 [ 355.714494] ? kmalloc_trace_noprof+0x2c8/0x2f0 [ 355.714497] ? __pfx_hardware_enable_nolock+0x10/0x10 [kvm] [ 355.714516] on_each_cpu_cond_mask+0x20/0x40 [ 355.714517] kvm_dev_ioctl+0x815/0xb40 [kvm] [ 355.714538] __x64_sys_ioctl+0x93/0xd0 [ 355.714542] do_syscall_64+0x7e/0x190 [ 355.714545] ? kvm_dev_ioctl+0x2fb/0xb40 [kvm] [ 355.714564] ? __schedule+0x3f3/0xb40 [ 355.714566] ? syscall_exit_to_user_mode+0x73/0x200 [ 355.714567] ? do_syscall_64+0x8a/0x190 [ 355.714568] ? do_syscall_64+0x8a/0x190 [ 355.714569] ? tomoyo_init_request_info+0x95/0xc0 [ 355.714573] ? tomoyo_path_number_perm+0x88/0x200 [ 355.714576] ? kvm_dev_ioctl+0x2fb/0xb40 [kvm] [ 355.714595] ? syscall_exit_to_user_mode+0x73/0x200 [ 355.714597] ? syscall_exit_to_user_mode+0x73/0x200 [ 355.714598] ? do_syscall_64+0x8a/0x190 [ 355.714599] ? __count_memcg_events+0x54/0xf0 [ 355.714601] ? __rseq_handle_notify_resume+0xa4/0x4f0 [ 355.714604] ? handle_mm_fault+0xaa/0x320 [ 355.714608] ? restore_fpregs_from_fpstate+0x38/0x90 [ 355.714611] ? switch_fpu_return+0x4b/0xc0 [ 355.714612] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 355.714614] RIP: 0033:0x7fb24aab7c5b [ 355.714616] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00 [ 355.714617] RSP: 002b:00007ffee1205880 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 355.714619] RAX: ffffffffffffffda RBX: 000000000000ae01 RCX: 00007fb24aab7c5b [ 355.714620] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 000000000000000a [ 355.714620] RBP: 000055b5ba0d2160 R08: 00007fb24ab8cc68 R09: 0000000000000006 [ 355.714621] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 355.714621] R13: 00007ffee1205b80 R14: 0000000000000000 R15: 00007ffee1205ac0 [ 355.714622] </TASK> [ 355.880539] ------------[ cut here ]------------ [ 355.880542] kernel BUG at arch/x86/kvm/x86.c:510! [ 355.880548] Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 355.880551] CPU: 0 PID: 1550 Comm: qemu-system-x86 Not tainted 6.10.0 #8 [ 355.880553] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-stable202402-prebuilt.qemu.org 02/14/2024 [ 355.880554] RIP: 0010:kvm_spurious_fault+0xe/0x10 [kvm] [ 355.880584] Code: 00 00 85 c0 0f 95 c0 e9 90 79 e7 d1 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 80 3d f9 1c 02 00 00 74 05 e9 72 79 e7 d1 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 90 e9 59 [ 355.880586] RSP: 0018:ffffb618806fbc38 EFLAGS: 00010246 [ 355.880587] RAX: 00000001025d0000 RBX: ffff94884d6c99b0 RCX: 0000000000000027 [ 355.880588] RDX: 0000000000000003 RSI: 000000000188d000 RDI: ffff94884d6c99b0 [ 355.880589] RBP: 0000000000038060 R08: 0000000000000001 R09: 0000000000000027 [ 355.880590] R10: 0000000000000001 R11: 0000000000400dc0 R12: ffff9488bbc38060 [ 355.880590] R13: 0000000000000000 R14: ffff9488411da000 R15: 0000000000000000 [ 355.880591] FS: 00007fb2390006c0(0000) GS:ffff9488bbc00000(0000) knlGS:0000000000000000 [ 355.880592] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 355.880593] CR2: 00007fbe78a5e030 CR3: 000000010d630000 CR4: 0000000000350ef0 [ 355.880595] Call Trace: [ 355.880598] <TASK> [ 355.880599] ? die+0x32/0x80 [ 355.880603] ? do_trap+0xd9/0x100 [ 355.880605] ? kvm_spurious_fault+0xe/0x10 [kvm] [ 355.880627] ? do_error_trap+0x6a/0x90 [ 355.880628] ? kvm_spurious_fault+0xe/0x10 [kvm] [ 355.880648] ? exc_invalid_op+0x4c/0x60 [ 355.880652] ? kvm_spurious_fault+0xe/0x10 [kvm] [ 355.880672] ? asm_exc_invalid_op+0x16/0x20 [ 355.880675] ? kvm_spurious_fault+0xe/0x10 [kvm] [ 355.880695] svm_prepare_switch_to_guest+0xe4/0x160 [kvm_amd] [ 355.880701] kvm_arch_vcpu_ioctl_run+0x441/0x15b0 [kvm] [ 355.880729] kvm_vcpu_ioctl+0x23d/0x6f0 [kvm] [ 355.880749] ? check_preempt_wakeup_fair+0x136/0x1d0 [ 355.880753] __x64_sys_ioctl+0x93/0xd0 [ 355.880757] do_syscall_64+0x7e/0x190 [ 355.880760] ? wake_up_q+0x4a/0x90 [ 355.880762] ? futex_wake+0x155/0x190 [ 355.880765] ? do_futex+0xeb/0x1c0 [ 355.880766] ? __x64_sys_futex+0x8e/0x1d0 [ 355.880767] ? syscall_exit_to_user_mode+0x73/0x200 [ 355.880769] ? syscall_exit_to_user_mode+0x73/0x200 [ 355.880770] ? do_syscall_64+0x8a/0x190 [ 355.880771] ? do_syscall_64+0x8a/0x190 [ 355.880772] ? exc_page_fault+0x72/0x170 [ 355.880773] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 355.880775] RIP: 0033:0x7fb24aab7c5b [ 355.880776] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00 [ 355.880777] RSP: 002b:00007fb238fff530 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 355.880778] RAX: ffffffffffffffda RBX: 000000000000ae80 RCX: 00007fb24aab7c5b [ 355.880779] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 000000000000000c [ 355.880780] RBP: 000055b5ba0d7e60 R08: 000055b5b32412d0 R09: 0000000000000000 [ 355.880780] R10: 00007fb24ab2bf70 R11: 0000000000000246 R12: 0000000000000000 [ 355.880781] R13: 0000000000000007 R14: 00007ffee1205360 R15: 00007fb238800000 [ 355.880782] </TASK> [ 355.880783] Modules linked in: kvm_amd ccp kvm qrtr rfkill binfmt_misc nls_ascii nls_cp437 vfat fat crc32_pclmul ghash_clmulni_intel sha512_ssse3 sha256_ssse3 sha1_ssse3 aesni_intel crypto_simd iTCO_wdt cryptd intel_pmc_bxt joydev iTCO_vendor_support pcspkr watchdog button sg evdev serio_raw parport_pc ppdev lp parport fuse loop efi_pstore dm_mod configfs qemu_fw_cfg ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 btrfs blake2b_generic efivarfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx libcrc32c crc32c_generic xor raid6_pq raid1 raid0 md_mod hid_generic usbhid bochs drm_vram_helper hid sd_mod t10_pi drm_kms_helper crc64_rocksoft crc64 crc_t10dif crct10dif_generic drm_ttm_helper ttm ahci libahci ehci_pci uhci_hcd virtio_scsi libata ehci_hcd scsi_mod e1000e psmouse usbcore virtio_pci virtio virtio_pci_legacy_dev virtio_pci_modern_dev crct10dif_pclmul crct10dif_common crc32c_intel drm virtio_ring i2c_i801 lpc_ich usb_common scsi_common i2c_smbus [last unloaded: ccp] [ 355.880835] ---[ end trace 0000000000000000 ]--- [ 355.884034] RIP: 0010:kvm_spurious_fault+0xe/0x10 [kvm] [ 355.884060] Code: 00 00 85 c0 0f 95 c0 e9 90 79 e7 d1 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 80 3d f9 1c 02 00 00 74 05 e9 72 79 e7 d1 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 90 e9 59 [ 355.884062] RSP: 0018:ffffb618806fbc38 EFLAGS: 00010246 [ 355.884063] RAX: 00000001025d0000 RBX: ffff94884d6c99b0 RCX: 0000000000000027 [ 355.884064] RDX: 0000000000000003 RSI: 000000000188d000 RDI: ffff94884d6c99b0 [ 355.884064] RBP: 0000000000038060 R08: 0000000000000001 R09: 0000000000000027 [ 355.884065] R10: 0000000000000001 R11: 0000000000400dc0 R12: ffff9488bbc38060 [ 355.884066] R13: 0000000000000000 R14: ffff9488411da000 R15: 0000000000000000 [ 355.884066] FS: 00007fb2390006c0(0000) GS:ffff9488bbc00000(0000) knlGS:0000000000000000 [ 355.884067] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 355.884068] CR2: 00007fbe78a5e030 CR3: 000000010d630000 CR4: 0000000000350ef0 [ 355.884069] note: qemu-system-x86[1550] exited with preempt_count 1 If I run `qemu-system-x86_64 -accel tcg` in L1 bash, it correctly boots into qemu BIOS. Any ideas about what could have caused it? -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
