On Sun, 19 Dec 2021 19:38:08 +0100 Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > On 12/18/21 07:27, Zdenek Kaspar wrote: > > Hello, looks like a955cad84cdaffa282b3cf8f5ce69e9e5655e585 is > > problematic with old Core2, when launching VM (openbsd smp): > > > > Dec 17 22:40:28 merkur kernel: BUG: kernel NULL pointer > > dereference, address: 0000000000000025 Dec 17 22:40:28 merkur > > kernel: #PF: supervisor read access in kernel mode Dec 17 22:40:28 > > merkur kernel: #PF: error_code(0x0000) - not-present page Dec 17 > > 22:40:28 merkur kernel: PGD 0 P4D 0 Dec 17 22:40:28 merkur kernel: > > Oops: 0000 [#1] PREEMPT SMP PTI Dec 17 22:40:28 merkur kernel: CPU: > > 1 PID: 346 Comm: qemu-build Not tainted 5.16.0-rc5-amd64 #1 Dec 17 > > 22:40:28 merkur kernel: Hardware name: /DG35EC, BIOS > > ECG3510M.86A.0118.2010.0113.1426 01/13/2010 Dec 17 22:40:28 merkur > > kernel: RIP: 0010:direct_page_fault+0x5f5/0x780 [kvm] Dec 17 > > 22:40:28 merkur kernel: Code: 71 80 c5 e3 48 8b 34 24 48 8b 86 a0 > > 02 00 00 48 8b 40 40 48 8b 0d 83 93 1f e4 48 c1 e8 06 48 83 e0 c0 > > 48 8b 4c 01 28 45 31 ed <f6> 41 25 08 48 8b 54 24 10 75 4a 48 8b 06 > > 80 79 20 00 75 0b 8a 49 Dec 17 22:40:28 merkur kernel: RSP: > > 0018:ffffb9330055f9e0 EFLAGS: 00010246 Dec 17 22:40:28 merkur > > kernel: RAX: 00000000000c5740 RBX: 0000000000000000 RCX: > > 0000000000000000 Dec 17 22:40:28 merkur kernel: RDX: > > 000000000000e6a1 RSI: ffffa38a4a810000 RDI: ffffb933005c5000 Dec 17 > > 22:40:28 merkur kernel: RBP: ffffb9330055fa48 R08: ffffb9330055f838 > > R09: 0000000000000000 Dec 17 22:40:28 merkur kernel: R10: > > 0000000000000126 R11: 0000000000000003 R12: 0000000000000000 Dec 17 > > 22:40:28 merkur kernel: R13: 0000000000000000 R14: 00000000000fe05b > > R15: 0000000000000001 Dec 17 22:40:28 merkur kernel: FS: > > 00007f3bbd196640(0000) GS:ffffa38abf280000(0000) > > knlGS:0000000000000000 Dec 17 22:40:28 merkur kernel: CS: 0010 DS: > > 0000 ES: 0000 CR0: 0000000080050033 Dec 17 22:40:28 merkur kernel: > > CR2: 0000000000000025 CR3: 0000000003c7c000 CR4: 00000000000026e0 > > Dec 17 22:40:28 merkur kernel: Call Trace: Dec 17 22:40:28 merkur > > kernel: <TASK> Dec 17 22:40:28 merkur kernel: > > kvm_mmu_page_fault+0xe8/0x2c0 [kvm] Dec 17 22:40:28 merkur kernel: > > vmx_handle_exit+0x9/0x40 [kvm_intel] Dec 17 22:40:28 merkur kernel: > > vcpu_enter_guest+0x1702/0x24a0 [kvm] Dec 17 22:40:28 merkur > > kernel: ? update_load_avg+0x188/0x4e0 Dec 17 22:40:28 merkur > > kernel: ? get_mem_cgroup_from_objcg+0x50/0x60 Dec 17 22:40:28 > > merkur kernel: ? vmx_set_msr+0xa0b/0xc00 [kvm_intel] Dec 17 > > 22:40:28 merkur kernel: ? kvm_set_msr_common+0x971/0xd10 [kvm] Dec > > 17 22:40:28 merkur kernel: ? kvm_arch_vcpu_ioctl+0xc77/0xf00 [kvm] > > Dec 17 22:40:28 merkur kernel: ? vmx_vcpu_put+0x10/0x1d0 > > [kvm_intel] Dec 17 22:40:28 merkur kernel: ? > > vmx_vcpu_load+0x18/0x30 [kvm_intel] Dec 17 22:40:28 merkur kernel: > > ? kvm_arch_vcpu_put+0xf6/0x110 [kvm] Dec 17 22:40:28 merkur kernel: > > ? vcpu_put+0x1c/0x40 [kvm] Dec 17 22:40:28 merkur kernel: ? > > kvm_arch_vcpu_ioctl+0xca1/0xf00 [kvm] Dec 17 22:40:28 merkur > > kernel: ? vmx_vcpu_load+0x18/0x30 [kvm_intel] Dec 17 22:40:28 > > merkur kernel: vcpu_run+0x6f/0x310 [kvm] Dec 17 22:40:28 merkur > > kernel: kvm_arch_vcpu_ioctl_run+0x317/0x4c0 [kvm] Dec 17 22:40:28 > > merkur kernel: kvm_vcpu_ioctl+0x490/0x520 [kvm] Dec 17 22:40:28 > > merkur kernel: ? wake_up_q+0x41/0x80 Dec 17 22:40:28 merkur > > kernel: ? __fget_files+0xd8/0xf0 Dec 17 22:40:28 merkur kernel: > > __x64_sys_ioctl+0xc10/0xd00 Dec 17 22:40:28 merkur kernel: ? > > do_futex+0x118/0x1c0 Dec 17 22:40:28 merkur kernel: ? > > __x64_sys_futex+0x125/0x190 Dec 17 22:40:28 merkur kernel: > > do_syscall_64+0x43/0x90 Dec 17 22:40:28 merkur kernel: > > entry_SYSCALL_64_after_hwframe+0x44/0xae Dec 17 22:40:28 merkur > > kernel: RIP: 0033:0x7f3bbe9d559b Dec 17 22:40:28 merkur kernel: > > Code: ff ff ff 85 c0 79 9b 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 > > 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 > > <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a5 a8 0c 00 f7 d8 64 89 01 48 > > Dec 17 22:40:28 merkur kernel: RSP: 002b:00007f3bbd1955b8 EFLAGS: > > 00000246 ORIG_RAX: 0000000000000010 Dec 17 22:40:28 merkur kernel: > > RAX: ffffffffffffffda RBX: 000000000000ae80 RCX: 00007f3bbe9d559b > > Dec 17 22:40:28 merkur kernel: RDX: 0000000000000000 RSI: > > 000000000000ae80 RDI: 0000000000000012 Dec 17 22:40:28 merkur > > kernel: RBP: 000055fd828fa860 R08: 000055fd8104af58 R09: > > 00007f3b700040b8 Dec 17 22:40:28 merkur kernel: R10: > > 0000000000000100 R11: 0000000000000246 R12: 0000000000000000 Dec 17 > > 22:40:28 merkur kernel: R13: 000055fd8108eb78 R14: 0000000000000000 > > R15: 00007f3bbd196640 Dec 17 22:40:28 merkur kernel: </TASK> Dec > > 17 22:40:28 merkur kernel: Modules linked in: vhost_net vhost > > vhost_iotlb tun auth_rpcgss nfsv4 dns_resolver nfs lockd grace > > sunrpc lzo_rle zram zsmalloc cpufreq_powersave i915 kvm_intel video > > intel_gtt iosf_mbi bridge ttm e1000e i2c_algo_bit iTCO_wdt 8250 kvm > > 8250_base drm_kms_helper serial_core lpc_ich stp irqbypass mfd_core > > evdev llc sysimgblt syscopyarea sysfillrect acpi_cpufreq button > > processor fb_sys_fops drm backlight i2c_core sch_fq_codel ip_tables > > x_tables ipv6 autofs4 btrfs raid6_pq xor zstd_decompress > > zstd_compress lzo_decompress lzo_compress libcrc32c crc32c_generic > > ecb xts dm_crypt dm_mod sd_mod t10_pi hid_generic usbhid hid > > uhci_hcd ahci libahci ehci_pci ehci_hcd usbcore pata_jmicron > > sata_sil24 usb_common Dec 17 22:40:28 merkur kernel: CR2: > > 0000000000000025 Dec 17 22:40:28 merkur kernel: ---[ end trace > > 1e1aaa4a15aaeb25 ]--- Dec 17 22:40:28 merkur kernel: RIP: > > 0010:direct_page_fault+0x5f5/0x780 [kvm] Dec 17 22:40:28 merkur > > kernel: Code: 71 80 c5 e3 48 8b 34 24 48 8b 86 a0 02 00 00 48 8b 40 > > 40 48 8b 0d 83 93 1f e4 48 c1 e8 06 48 83 e0 c0 48 8b 4c 01 28 45 > > 31 ed <f6> 41 25 08 48 8b 54 24 10 75 4a 48 8b 06 80 79 20 00 75 0b > > 8a 49 Dec 17 22:40:28 merkur kernel: RSP: 0018:ffffb9330055f9e0 > > EFLAGS: 00010246 Dec 17 22:40:28 merkur kernel: RAX: > > 00000000000c5740 RBX: 0000000000000000 RCX: 0000000000000000 Dec 17 > > 22:40:28 merkur kernel: RDX: 000000000000e6a1 RSI: ffffa38a4a810000 > > RDI: ffffb933005c5000 Dec 17 22:40:28 merkur kernel: RBP: > > ffffb9330055fa48 R08: ffffb9330055f838 R09: 0000000000000000 Dec 17 > > 22:40:28 merkur kernel: R10: 0000000000000126 R11: 0000000000000003 > > R12: 0000000000000000 Dec 17 22:40:28 merkur kernel: R13: > > 0000000000000000 R14: 00000000000fe05b R15: 0000000000000001 Dec 17 > > 22:40:28 merkur kernel: FS: 00007f3bbd196640(0000) > > GS:ffffa38abf280000(0000) knlGS:0000000000000000 Dec 17 22:40:28 > > merkur kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > Dec 17 22:40:28 merkur kernel: CR2: 0000000000000025 CR3: > > 0000000003c7c000 CR4: 00000000000026e0 Dec 17 22:40:28 merkur > > kernel: note: qemu-build[346] exited with preempt_count 1 > > > > model name : Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz > > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr > > pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ht tm pbe > > syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl > > cpuid aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 > > xtpr pdcm lahf_lm pti tpr_shadow dtherm vmx flags : > > tsc_offset vtpr > > Hi, this will be fixed in the next rc. > > Thanks, > > Paolo Hi, v5.16-rc6 works fine, thanks! Z.
