Warning: Permanently added '10.128.1.15' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 58.509529][ T7019] 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. [ 58.551814][ T7019] ================================================================== [ 58.560296][ T7019] BUG: KASAN: slab-out-of-bounds in __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 58.569178][ T7019] Read of size 8 at addr ffff888093ae3468 by task syz-executor148/7019 [ 58.577402][ T7019] [ 58.579725][ T7019] CPU: 1 PID: 7019 Comm: syz-executor148 Not tainted 5.6.0-syzkaller #0 [ 58.588143][ T7019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.598196][ T7019] Call Trace: [ 58.601494][ T7019] dump_stack+0x188/0x20d [ 58.605865][ T7019] print_address_description.constprop.0.cold+0xd3/0x315 [ 58.613024][ T7019] ? __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 58.619045][ T7019] __kasan_report.cold+0x35/0x4d [ 58.623992][ T7019] ? __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 58.629980][ T7019] ? __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 58.635986][ T7019] kasan_report+0x33/0x50 [ 58.640315][ T7019] __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 58.646129][ T7019] ? __kvm_write_guest_page+0x170/0x170 [ 58.651683][ T7019] kvm_lapic_set_vapic_addr+0x88/0x180 [ 58.657250][ T7019] kvm_arch_vcpu_ioctl+0xf0d/0x2c20 [ 58.662447][ T7019] ? kvm_arch_vcpu_put+0x530/0x530 [ 58.667545][ T7019] ? lock_acquire+0x1f2/0x8f0 [ 58.672219][ T7019] ? kvm_vcpu_ioctl+0x175/0xe60 [ 58.677056][ T7019] ? lock_release+0x800/0x800 [ 58.681764][ T7019] ? find_held_lock+0x2d/0x110 [ 58.686517][ T7019] ? __mutex_lock+0x458/0x13c0 [ 58.691273][ T7019] ? find_held_lock+0x2d/0x110 [ 58.696015][ T7019] ? kvm_vcpu_ioctl+0x175/0xe60 [ 58.700860][ T7019] ? tomoyo_path_number_perm+0x1ee/0x4d0 [ 58.706617][ T7019] ? mutex_trylock+0x2c0/0x2c0 [ 58.711506][ T7019] ? lock_downgrade+0x840/0x840 [ 58.716346][ T7019] ? quarantine_put+0x119/0x1c0 [ 58.721179][ T7019] ? kfree+0x1eb/0x2b0 [ 58.725229][ T7019] ? tomoyo_path_number_perm+0x411/0x4d0 [ 58.731492][ T7019] ? lockdep_hardirqs_on+0x463/0x620 [ 58.736801][ T7019] ? tomoyo_path_number_perm+0x238/0x4d0 [ 58.742558][ T7019] kvm_vcpu_ioctl+0x866/0xe60 [ 58.747367][ T7019] ? kvm_get_dirty_log_protect.isra.0+0x670/0x670 [ 58.753939][ T7019] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 58.760754][ T7019] ? do_vfs_ioctl+0x50c/0x12d0 [ 58.765523][ T7019] ? ioctl_file_clone+0x180/0x180 [ 58.770556][ T7019] kvm_vcpu_compat_ioctl+0x1ab/0x350 [ 58.775854][ T7019] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.781832][ T7019] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 58.786696][ T7019] ? do_sys_open+0xc3/0x140 [ 58.791222][ T7019] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 58.796327][ T7019] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 58.802308][ T7019] do_fast_syscall_32+0x270/0xe90 [ 58.807479][ T7019] entry_SYSENTER_compat+0x70/0x7f [ 58.812691][ T7019] [ 58.815023][ T7019] Allocated by task 7019: [ 58.819356][ T7019] save_stack+0x1b/0x40 [ 58.823521][ T7019] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 58.829194][ T7019] kvmalloc_node+0x61/0xf0 [ 58.834252][ T7019] kvm_set_memslot+0x115/0x1530 [ 58.839098][ T7019] __kvm_set_memory_region+0xcf7/0x1320 [ 58.844991][ T7019] __x86_set_memory_region+0x2a3/0x5a0 [ 58.850462][ T7019] vmx_create_vcpu+0x2107/0x2b40 [ 58.855437][ T7019] kvm_arch_vcpu_create+0x6ef/0xb80 [ 58.860624][ T7019] kvm_vm_ioctl+0x15f7/0x23e0 [ 58.865301][ T7019] kvm_vm_compat_ioctl+0x125/0x240 [ 58.870420][ T7019] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 58.875869][ T7019] do_fast_syscall_32+0x270/0xe90 [ 58.880887][ T7019] entry_SYSENTER_compat+0x70/0x7f [ 58.886141][ T7019] [ 58.888559][ T7019] Freed by task 6998: [ 58.892595][ T7019] save_stack+0x1b/0x40 [ 58.896749][ T7019] __kasan_slab_free+0xf7/0x140 [ 58.901621][ T7019] kfree+0x109/0x2b0 [ 58.905738][ T7019] skb_free_head+0x8b/0xa0 [ 58.910270][ T7019] skb_release_data+0x42e/0x8b0 [ 58.915112][ T7019] skb_release_all+0x46/0x60 [ 58.919840][ T7019] consume_skb+0xf3/0x400 [ 58.924271][ T7019] unix_stream_read_generic+0x17e1/0x1c80 [ 58.930100][ T7019] unix_stream_recvmsg+0xb1/0xf0 [ 58.935040][ T7019] sock_recvmsg+0xca/0x110 [ 58.939451][ T7019] sock_read_iter+0x2c7/0x3d0 [ 58.944299][ T7019] new_sync_read+0x64d/0x7a0 [ 58.948878][ T7019] __vfs_read+0xc9/0x100 [ 58.953160][ T7019] vfs_read+0x1f0/0x420 [ 58.957317][ T7019] ksys_read+0x1ee/0x250 [ 58.961551][ T7019] do_syscall_64+0xf6/0x7d0 [ 58.966174][ T7019] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.972064][ T7019] [ 58.974478][ T7019] The buggy address belongs to the object at ffff888093ae3000 [ 58.974478][ T7019] which belongs to the cache kmalloc-2k of size 2048 [ 58.988687][ T7019] The buggy address is located 1128 bytes inside of [ 58.988687][ T7019] 2048-byte region [ffff888093ae3000, ffff888093ae3800) [ 59.002125][ T7019] The buggy address belongs to the page: [ 59.007759][ T7019] page:ffffea00024eb8c0 refcount:1 mapcount:0 mapping:00000000aed624cb index:0x0 [ 59.016917][ T7019] flags: 0xfffe0000000200(slab) [ 59.021771][ T7019] raw: 00fffe0000000200 ffffea00024eb3c8 ffffea00024eb988 ffff8880aa000e00 [ 59.030365][ T7019] raw: 0000000000000000 ffff888093ae3000 0000000100000001 0000000000000000 [ 59.039210][ T7019] page dumped because: kasan: bad access detected [ 59.045674][ T7019] [ 59.048083][ T7019] Memory state around the buggy address: [ 59.053716][ T7019] ffff888093ae3300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 59.061771][ T7019] ffff888093ae3380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 59.070016][ T7019] >ffff888093ae3400: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 59.078069][ T7019] ^ [ 59.085760][ T7019] ffff888093ae3480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 59.094004][ T7019] ffff888093ae3500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 59.102500][ T7019] ================================================================== [ 59.111200][ T7019] Disabling lock debugging due to kernel taint [ 59.117933][ T7019] Kernel panic - not syncing: panic_on_warn set ... [ 59.124570][ T7019] CPU: 1 PID: 7019 Comm: syz-executor148 Tainted: G B 5.6.0-syzkaller #0 [ 59.134544][ T7019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.144608][ T7019] Call Trace: [ 59.147926][ T7019] dump_stack+0x188/0x20d [ 59.152278][ T7019] panic+0x2e3/0x75c [ 59.156348][ T7019] ? add_taint.cold+0x16/0x16 [ 59.161635][ T7019] ? preempt_schedule_common+0x5e/0xc0 [ 59.167390][ T7019] ? __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 59.173543][ T7019] ? preempt_schedule_thunk+0x16/0x18 [ 59.178917][ T7019] ? trace_hardirqs_on+0x55/0x220 [ 59.183928][ T7019] ? __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 59.189891][ T7019] end_report+0x4d/0x53 [ 59.194024][ T7019] __kasan_report.cold+0xd/0x4d [ 59.198909][ T7019] ? __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 59.204887][ T7019] ? __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 59.211637][ T7019] kasan_report+0x33/0x50 [ 59.216774][ T7019] __kvm_gfn_to_hva_cache_init+0x5fb/0x670 [ 59.222600][ T7019] ? __kvm_write_guest_page+0x170/0x170 [ 59.228142][ T7019] kvm_lapic_set_vapic_addr+0x88/0x180 [ 59.233731][ T7019] kvm_arch_vcpu_ioctl+0xf0d/0x2c20 [ 59.238921][ T7019] ? kvm_arch_vcpu_put+0x530/0x530 [ 59.244759][ T7019] ? lock_acquire+0x1f2/0x8f0 [ 59.249562][ T7019] ? kvm_vcpu_ioctl+0x175/0xe60 [ 59.254861][ T7019] ? lock_release+0x800/0x800 [ 59.260155][ T7019] ? find_held_lock+0x2d/0x110 [ 59.265021][ T7019] ? __mutex_lock+0x458/0x13c0 [ 59.269793][ T7019] ? find_held_lock+0x2d/0x110 [ 59.274568][ T7019] ? kvm_vcpu_ioctl+0x175/0xe60 [ 59.279436][ T7019] ? tomoyo_path_number_perm+0x1ee/0x4d0 [ 59.285066][ T7019] ? mutex_trylock+0x2c0/0x2c0 [ 59.289822][ T7019] ? lock_downgrade+0x840/0x840 [ 59.294911][ T7019] ? quarantine_put+0x119/0x1c0 [ 59.299824][ T7019] ? kfree+0x1eb/0x2b0 [ 59.303877][ T7019] ? tomoyo_path_number_perm+0x411/0x4d0 [ 59.309498][ T7019] ? lockdep_hardirqs_on+0x463/0x620 [ 59.314760][ T7019] ? tomoyo_path_number_perm+0x238/0x4d0 [ 59.320488][ T7019] kvm_vcpu_ioctl+0x866/0xe60 [ 59.325187][ T7019] ? kvm_get_dirty_log_protect.isra.0+0x670/0x670 [ 59.331641][ T7019] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 59.337515][ T7019] ? do_vfs_ioctl+0x50c/0x12d0 [ 59.343273][ T7019] ? ioctl_file_clone+0x180/0x180 [ 59.348738][ T7019] kvm_vcpu_compat_ioctl+0x1ab/0x350 [ 59.355446][ T7019] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.362238][ T7019] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 59.367359][ T7019] ? do_sys_open+0xc3/0x140 [ 59.371862][ T7019] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 59.376812][ T7019] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 59.382258][ T7019] do_fast_syscall_32+0x270/0xe90 [ 59.387385][ T7019] entry_SYSENTER_compat+0x70/0x7f [ 59.393975][ T7019] Kernel Offset: disabled [ 59.398896][ T7019] Rebooting in 86400 seconds..