Warning: Permanently added '10.128.0.116' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 65.521500][ T7137] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. [ 65.855643][ T7137] ================================================================== [ 65.863835][ T7137] BUG: KASAN: slab-out-of-bounds in kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 65.872166][ T7137] Read of size 8 at addr ffff888095780468 by task syz-executor935/7137 [ 65.880379][ T7137] [ 65.882713][ T7137] CPU: 0 PID: 7137 Comm: syz-executor935 Not tainted 5.6.0-syzkaller #0 [ 65.891021][ T7137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.901069][ T7137] Call Trace: [ 65.904347][ T7137] dump_stack+0x188/0x20d [ 65.908661][ T7137] print_address_description.constprop.0.cold+0xd3/0x315 [ 65.915751][ T7137] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 65.921359][ T7137] __kasan_report.cold+0x35/0x4d [ 65.926286][ T7137] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 65.931897][ T7137] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 65.937504][ T7137] kasan_report+0x33/0x50 [ 65.941824][ T7137] kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 65.947285][ T7137] try_async_pf+0x12b/0xac0 [ 65.951856][ T7137] ? ept_gva_to_gpa+0x1e0/0x1e0 [ 65.956703][ T7137] ? mark_held_locks+0x9f/0xe0 [ 65.961463][ T7137] ? mmu_topup_memory_caches+0x325/0x460 [ 65.967127][ T7137] direct_page_fault+0x27d/0x1d70 [ 65.972144][ T7137] ? kvm_mmu_get_page+0x1e70/0x1e70 [ 65.977323][ T7137] ? kvm_mtrr_check_gfn_range_consistency+0x254/0x2e0 [ 65.984062][ T7137] ? kvm_vcpu_mtrr_init+0x70/0x70 [ 65.989089][ T7137] kvm_mmu_page_fault+0x187/0x15d0 [ 65.995386][ T7137] ? find_held_lock+0x2d/0x110 [ 66.000138][ T7137] ? kvm_nx_lpage_recovery_worker+0x790/0x790 [ 66.006188][ T7137] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.011787][ T7137] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.017791][ T7137] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.023318][ T7137] ? handle_ept_violation+0x206/0x550 [ 66.028714][ T7137] ? vmx_inject_irq+0x5b0/0x5b0 [ 66.033546][ T7137] vmx_handle_exit+0x2b8/0x1700 [ 66.038381][ T7137] vcpu_enter_guest+0xfea/0x59d0 [ 66.043304][ T7137] ? kvm_vcpu_reload_apic_access_page+0x300/0x300 [ 66.049704][ T7137] ? kvm_vcpu_kick+0x162/0x2a0 [ 66.054447][ T7137] ? __apic_accept_irq+0x423/0xb80 [ 66.059548][ T7137] ? kvm_lapic_enable_pv_eoi+0x160/0x160 [ 66.065158][ T7137] ? kvm_check_async_pf_completion+0x2a4/0x400 [ 66.071292][ T7137] ? kvm_arch_vcpu_ioctl_run+0x3fb/0x16a0 [ 66.076987][ T7137] kvm_arch_vcpu_ioctl_run+0x3fb/0x16a0 [ 66.082538][ T7137] kvm_vcpu_ioctl+0x493/0xe60 [ 66.087193][ T7137] ? kvm_get_dirty_log_protect.isra.0+0x670/0x670 [ 66.093591][ T7137] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 66.099639][ T7137] ? do_vfs_ioctl+0x50c/0x12d0 [ 66.104381][ T7137] ? ioctl_file_clone+0x180/0x180 [ 66.109389][ T7137] kvm_vcpu_compat_ioctl+0x1ab/0x350 [ 66.114773][ T7137] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.120738][ T7137] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 66.125610][ T7137] ? do_sys_open+0xc3/0x140 [ 66.130152][ T7137] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 66.135010][ T7137] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 66.140469][ T7137] do_fast_syscall_32+0x270/0xe90 [ 66.145482][ T7137] entry_SYSENTER_compat+0x70/0x7f [ 66.150580][ T7137] [ 66.152892][ T7137] Allocated by task 7137: [ 66.157198][ T7137] save_stack+0x1b/0x80 [ 66.161330][ T7137] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 66.167031][ T7137] kvmalloc_node+0x61/0xf0 [ 66.171431][ T7137] kvm_set_memslot+0x115/0x1530 [ 66.176265][ T7137] __kvm_set_memory_region+0xcf7/0x1320 [ 66.181807][ T7137] __x86_set_memory_region+0x2a3/0x5a0 [ 66.187246][ T7137] vmx_create_vcpu+0x2107/0x2b40 [ 66.192189][ T7137] kvm_arch_vcpu_create+0x6ef/0xb80 [ 66.197412][ T7137] kvm_vm_ioctl+0x15f7/0x23e0 [ 66.202086][ T7137] kvm_vm_compat_ioctl+0x125/0x240 [ 66.207180][ T7137] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 66.212621][ T7137] do_fast_syscall_32+0x270/0xe90 [ 66.217626][ T7137] entry_SYSENTER_compat+0x70/0x7f [ 66.223056][ T7137] [ 66.225361][ T7137] Freed by task 0: [ 66.229053][ T7137] (stack is not available) [ 66.233442][ T7137] [ 66.235759][ T7137] The buggy address belongs to the object at ffff888095780000 [ 66.235759][ T7137] which belongs to the cache kmalloc-2k of size 2048 [ 66.249794][ T7137] The buggy address is located 1128 bytes inside of [ 66.249794][ T7137] 2048-byte region [ffff888095780000, ffff888095780800) [ 66.263210][ T7137] The buggy address belongs to the page: [ 66.268821][ T7137] page:ffffea000255e000 refcount:1 mapcount:0 mapping:00000000624ffbcc index:0x0 [ 66.277905][ T7137] flags: 0xfffe0000000200(slab) [ 66.282735][ T7137] raw: 00fffe0000000200 ffffea00024b9448 ffffea0002897988 ffff8880aa000e00 [ 66.291316][ T7137] raw: 0000000000000000 ffff888095780000 0000000100000001 0000000000000000 [ 66.299934][ T7137] page dumped because: kasan: bad access detected [ 66.306338][ T7137] [ 66.308715][ T7137] Memory state around the buggy address: [ 66.314336][ T7137] ffff888095780300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 66.322444][ T7137] ffff888095780380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 66.330677][ T7137] >ffff888095780400: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 66.338883][ T7137] ^ [ 66.346323][ T7137] ffff888095780480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 66.354381][ T7137] ffff888095780500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 66.362459][ T7137] ================================================================== [ 66.370615][ T7137] Disabling lock debugging due to kernel taint [ 66.377383][ T7137] Kernel panic - not syncing: panic_on_warn set ... [ 66.383983][ T7137] CPU: 0 PID: 7137 Comm: syz-executor935 Tainted: G B 5.6.0-syzkaller #0 [ 66.393702][ T7137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.403765][ T7137] Call Trace: [ 66.407093][ T7137] dump_stack+0x188/0x20d [ 66.411521][ T7137] panic+0x2e3/0x75c [ 66.415417][ T7137] ? add_taint.cold+0x16/0x16 [ 66.420091][ T7137] ? preempt_schedule_common+0x5e/0xc0 [ 66.425660][ T7137] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 66.431278][ T7137] ? preempt_schedule_thunk+0x16/0x18 [ 66.436649][ T7137] ? trace_hardirqs_on+0x55/0x220 [ 66.441654][ T7137] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 66.447263][ T7137] end_report+0x43/0x49 [ 66.451395][ T7137] __kasan_report.cold+0xd/0x4d [ 66.456221][ T7137] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 66.461827][ T7137] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 66.467435][ T7137] kasan_report+0x33/0x50 [ 66.471745][ T7137] kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 66.477197][ T7137] try_async_pf+0x12b/0xac0 [ 66.481676][ T7137] ? ept_gva_to_gpa+0x1e0/0x1e0 [ 66.486502][ T7137] ? mark_held_locks+0x9f/0xe0 [ 66.491250][ T7137] ? mmu_topup_memory_caches+0x325/0x460 [ 66.496860][ T7137] direct_page_fault+0x27d/0x1d70 [ 66.501880][ T7137] ? kvm_mmu_get_page+0x1e70/0x1e70 [ 66.507113][ T7137] ? kvm_mtrr_check_gfn_range_consistency+0x254/0x2e0 [ 66.513871][ T7137] ? kvm_vcpu_mtrr_init+0x70/0x70 [ 66.518890][ T7137] kvm_mmu_page_fault+0x187/0x15d0 [ 66.523980][ T7137] ? find_held_lock+0x2d/0x110 [ 66.528717][ T7137] ? kvm_nx_lpage_recovery_worker+0x790/0x790 [ 66.534773][ T7137] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.540293][ T7137] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.546257][ T7137] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.551786][ T7137] ? handle_ept_violation+0x206/0x550 [ 66.557133][ T7137] ? vmx_inject_irq+0x5b0/0x5b0 [ 66.561966][ T7137] vmx_handle_exit+0x2b8/0x1700 [ 66.566813][ T7137] vcpu_enter_guest+0xfea/0x59d0 [ 66.571754][ T7137] ? kvm_vcpu_reload_apic_access_page+0x300/0x300 [ 66.578172][ T7137] ? kvm_vcpu_kick+0x162/0x2a0 [ 66.583361][ T7137] ? __apic_accept_irq+0x423/0xb80 [ 66.588478][ T7137] ? kvm_lapic_enable_pv_eoi+0x160/0x160 [ 66.594118][ T7137] ? kvm_check_async_pf_completion+0x2a4/0x400 [ 66.600256][ T7137] ? kvm_arch_vcpu_ioctl_run+0x3fb/0x16a0 [ 66.605984][ T7137] kvm_arch_vcpu_ioctl_run+0x3fb/0x16a0 [ 66.611533][ T7137] kvm_vcpu_ioctl+0x493/0xe60 [ 66.616194][ T7137] ? kvm_get_dirty_log_protect.isra.0+0x670/0x670 [ 66.622615][ T7137] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 66.628559][ T7137] ? do_vfs_ioctl+0x50c/0x12d0 [ 66.633341][ T7137] ? ioctl_file_clone+0x180/0x180 [ 66.638353][ T7137] kvm_vcpu_compat_ioctl+0x1ab/0x350 [ 66.643618][ T7137] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.649577][ T7137] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 66.654427][ T7137] ? do_sys_open+0xc3/0x140 [ 66.658915][ T7137] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 66.663746][ T7137] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 66.669188][ T7137] do_fast_syscall_32+0x270/0xe90 [ 66.674193][ T7137] entry_SYSENTER_compat+0x70/0x7f [ 66.680827][ T7137] Kernel Offset: disabled [ 66.685155][ T7137] Rebooting in 86400 seconds..