Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Daily Cleanup of Temporary Directories. [ OK ] Reached target Timers. [ OK ] Started Regular background program processing daemon. Starting System Logging Service... Starting Permit User Sessions... [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. 2020/04/03 16:22:08 parsed 1 programs 2020/04/03 16:22:11 executed programs: 0 syzkaller login: [ 60.065192][ T7059] IPVS: ftp: loaded support on port[0] = 21 [ 60.158767][ T7059] chnl_net:caif_netlink_parms(): no params data found [ 60.208096][ T7059] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.215675][ T7059] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.223478][ T7059] device bridge_slave_0 entered promiscuous mode [ 60.232480][ T7059] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.240003][ T7059] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.248198][ T7059] device bridge_slave_1 entered promiscuous mode [ 60.269125][ T7059] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.279993][ T7059] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.303171][ T7059] team0: Port device team_slave_0 added [ 60.311343][ T7059] team0: Port device team_slave_1 added [ 60.328795][ T7059] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 60.336425][ T7059] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 60.362440][ T7059] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 60.374918][ T7059] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 60.381864][ T7059] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 60.407929][ T7059] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.496733][ T7059] device hsr_slave_0 entered promiscuous mode [ 60.534329][ T7059] device hsr_slave_1 entered promiscuous mode [ 60.658393][ T7059] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.707906][ T7059] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.766721][ T7059] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.826258][ T7059] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.889204][ T7059] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.896625][ T7059] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.904655][ T7059] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.911730][ T7059] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.957679][ T7059] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.970354][ T2955] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.981410][ T2955] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.989995][ T2955] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.999245][ T2955] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 61.012591][ T7059] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.023588][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.032500][ T4104] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.039737][ T4104] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.051960][ T2955] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.061275][ T2955] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.068398][ T2955] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.088320][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.098771][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.111092][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.128248][ T7059] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 61.139053][ T7059] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.152342][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.162016][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.170931][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.190014][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.197517][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.212073][ T7059] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.230259][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 61.239892][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 61.261372][ T7059] device veth0_vlan entered promiscuous mode [ 61.269050][ T2955] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 61.278028][ T2955] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 61.287262][ T2955] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 61.296357][ T2955] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 61.309508][ T7059] device veth1_vlan entered promiscuous mode [ 61.330458][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 61.339574][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 61.348175][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 61.356895][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 61.367861][ T7059] device veth0_macvtap entered promiscuous mode [ 61.379429][ T7059] device veth1_macvtap entered promiscuous mode [ 61.397865][ T7059] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 61.407251][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 61.415775][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 61.423963][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 61.432633][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 61.449257][ T7059] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 61.457669][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 61.466634][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 61.673476][ T7268] 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. [ 61.761296][ T7268] ================================================================== [ 61.769555][ T7268] BUG: KASAN: slab-out-of-bounds in kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 61.777896][ T7268] Read of size 8 at addr ffff8880a2c4e468 by task syz-executor.0/7268 [ 61.786045][ T7268] [ 61.788383][ T7268] CPU: 1 PID: 7268 Comm: syz-executor.0 Not tainted 5.6.0-syzkaller #0 [ 61.796616][ T7268] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.806664][ T7268] Call Trace: [ 61.809995][ T7268] dump_stack+0x188/0x20d [ 61.814314][ T7268] print_address_description.constprop.0.cold+0xd3/0x315 [ 61.821324][ T7268] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 61.826943][ T7268] __kasan_report.cold+0x35/0x4d [ 61.831872][ T7268] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 61.837499][ T7268] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 61.843544][ T7268] kasan_report+0x33/0x50 [ 61.847887][ T7268] kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 61.853331][ T7268] kvm_vcpu_write_guest+0x48/0xd0 [ 61.858341][ T7268] enter_smm+0xa12/0x1740 [ 61.862655][ T7268] ? undo_dev_pagemap+0x4e0/0x4e0 [ 61.868444][ T7268] ? emulator_pio_in_emulated+0x70/0x70 [ 61.873975][ T7268] ? print_usage_bug+0x240/0x240 [ 61.878938][ T7268] ? kvm_apic_accept_events+0x1c4/0x540 [ 61.884492][ T7268] ? kvm_lapic_enable_pv_eoi+0x160/0x160 [ 61.890115][ T7268] ? kvm_is_reserved_pfn+0x260/0x2e0 [ 61.895404][ T7268] vcpu_enter_guest+0x1f2a/0x59d0 [ 61.900415][ T7268] ? kvm_vcpu_reload_apic_access_page+0x300/0x300 [ 61.906816][ T7268] ? kvm_arch_vcpu_ioctl_run+0x23a/0x16a0 [ 61.912519][ T7268] ? lock_release+0x800/0x800 [ 61.917182][ T7268] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.922712][ T7268] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.928672][ T7268] ? lockdep_hardirqs_on+0x463/0x620 [ 61.933948][ T7268] ? kvm_arch_vcpu_ioctl_run+0x3fb/0x16a0 [ 61.939644][ T7268] ? kvm_arch_vcpu_ioctl_run+0x27b/0x16a0 [ 61.945353][ T7268] kvm_arch_vcpu_ioctl_run+0x3fb/0x16a0 [ 61.950990][ T7268] kvm_vcpu_ioctl+0x493/0xe60 [ 61.955679][ T7268] ? kvm_get_dirty_log_protect.isra.0+0x670/0x670 [ 61.962089][ T7268] ? __fget_files+0x30d/0x500 [ 61.966766][ T7268] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 61.972705][ T7268] ? do_vfs_ioctl+0x50c/0x12d0 [ 61.977455][ T7268] ? ioctl_file_clone+0x180/0x180 [ 61.982460][ T7268] ? __fget_files+0x32f/0x500 [ 61.987129][ T7268] kvm_vcpu_compat_ioctl+0x1ab/0x350 [ 61.992418][ T7268] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 61.997315][ T7268] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 62.002253][ T7268] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 62.007725][ T7268] do_fast_syscall_32+0x270/0xe90 [ 62.012746][ T7268] entry_SYSENTER_compat+0x70/0x7f [ 62.017892][ T7268] [ 62.020213][ T7268] Allocated by task 7268: [ 62.024542][ T7268] save_stack+0x1b/0x80 [ 62.028720][ T7268] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 62.034330][ T7268] kvmalloc_node+0x61/0xf0 [ 62.038737][ T7268] kvm_set_memslot+0x115/0x1530 [ 62.043749][ T7268] __kvm_set_memory_region+0xcf7/0x1320 [ 62.049286][ T7268] __x86_set_memory_region+0x2ef/0x5a0 [ 62.054738][ T7268] vmx_create_vcpu+0x2107/0x2b40 [ 62.059653][ T7268] kvm_arch_vcpu_create+0x6ef/0xb80 [ 62.064843][ T7268] kvm_vm_ioctl+0x15f7/0x23e0 [ 62.069779][ T7268] kvm_vm_compat_ioctl+0x125/0x240 [ 62.074872][ T7268] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 62.080312][ T7268] do_fast_syscall_32+0x270/0xe90 [ 62.085317][ T7268] entry_SYSENTER_compat+0x70/0x7f [ 62.090849][ T7268] [ 62.093158][ T7268] Freed by task 0: [ 62.096852][ T7268] (stack is not available) [ 62.101239][ T7268] [ 62.103566][ T7268] The buggy address belongs to the object at ffff8880a2c4e000 [ 62.103566][ T7268] which belongs to the cache kmalloc-2k of size 2048 [ 62.117624][ T7268] The buggy address is located 1128 bytes inside of [ 62.117624][ T7268] 2048-byte region [ffff8880a2c4e000, ffff8880a2c4e800) [ 62.131056][ T7268] The buggy address belongs to the page: [ 62.136949][ T7268] page:ffffea00028b1380 refcount:1 mapcount:0 mapping:00000000f28d19ce index:0x0 [ 62.146058][ T7268] flags: 0xfffe0000000200(slab) [ 62.150905][ T7268] raw: 00fffe0000000200 ffffea00028b9648 ffffea000290b348 ffff8880aa000e00 [ 62.159528][ T7268] raw: 0000000000000000 ffff8880a2c4e000 0000000100000001 0000000000000000 [ 62.168100][ T7268] page dumped because: kasan: bad access detected [ 62.175035][ T7268] [ 62.177357][ T7268] Memory state around the buggy address: [ 62.182971][ T7268] ffff8880a2c4e300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 62.191015][ T7268] ffff8880a2c4e380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 62.199071][ T7268] >ffff8880a2c4e400: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 62.207109][ T7268] ^ [ 62.215939][ T7268] ffff8880a2c4e480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 62.223994][ T7268] ffff8880a2c4e500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 62.232118][ T7268] ================================================================== [ 62.240174][ T7268] Disabling lock debugging due to kernel taint [ 62.274047][ T7268] Kernel panic - not syncing: panic_on_warn set ... [ 62.280744][ T7268] CPU: 1 PID: 7268 Comm: syz-executor.0 Tainted: G B 5.6.0-syzkaller #0 [ 62.290481][ T7268] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.300521][ T7268] Call Trace: [ 62.303802][ T7268] dump_stack+0x188/0x20d [ 62.308123][ T7268] panic+0x2e3/0x75c [ 62.312047][ T7268] ? add_taint.cold+0x16/0x16 [ 62.316702][ T7268] ? preempt_schedule_common+0x5e/0xc0 [ 62.322181][ T7268] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 62.327795][ T7268] ? preempt_schedule_thunk+0x16/0x18 [ 62.333149][ T7268] ? trace_hardirqs_on+0x55/0x220 [ 62.338171][ T7268] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 62.344488][ T7268] end_report+0x43/0x49 [ 62.348623][ T7268] __kasan_report.cold+0xd/0x4d [ 62.353466][ T7268] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 62.359077][ T7268] ? kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 62.364700][ T7268] kasan_report+0x33/0x50 [ 62.369012][ T7268] kvm_vcpu_gfn_to_memslot+0x50e/0x540 [ 62.374566][ T7268] kvm_vcpu_write_guest+0x48/0xd0 [ 62.379584][ T7268] enter_smm+0xa12/0x1740 [ 62.383915][ T7268] ? undo_dev_pagemap+0x4e0/0x4e0 [ 62.389023][ T7268] ? emulator_pio_in_emulated+0x70/0x70 [ 62.394613][ T7268] ? print_usage_bug+0x240/0x240 [ 62.399553][ T7268] ? kvm_apic_accept_events+0x1c4/0x540 [ 62.405117][ T7268] ? kvm_lapic_enable_pv_eoi+0x160/0x160 [ 62.410846][ T7268] ? kvm_is_reserved_pfn+0x260/0x2e0 [ 62.416128][ T7268] vcpu_enter_guest+0x1f2a/0x59d0 [ 62.421148][ T7268] ? kvm_vcpu_reload_apic_access_page+0x300/0x300 [ 62.427551][ T7268] ? kvm_arch_vcpu_ioctl_run+0x23a/0x16a0 [ 62.433273][ T7268] ? lock_release+0x800/0x800 [ 62.437962][ T7268] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.443489][ T7268] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.449460][ T7268] ? lockdep_hardirqs_on+0x463/0x620 [ 62.454744][ T7268] ? kvm_arch_vcpu_ioctl_run+0x3fb/0x16a0 [ 62.460449][ T7268] ? kvm_arch_vcpu_ioctl_run+0x27b/0x16a0 [ 62.466156][ T7268] kvm_arch_vcpu_ioctl_run+0x3fb/0x16a0 [ 62.471923][ T7268] kvm_vcpu_ioctl+0x493/0xe60 [ 62.476582][ T7268] ? kvm_get_dirty_log_protect.isra.0+0x670/0x670 [ 62.482984][ T7268] ? __fget_files+0x30d/0x500 [ 62.487659][ T7268] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 62.493539][ T7268] ? do_vfs_ioctl+0x50c/0x12d0 [ 62.498294][ T7268] ? ioctl_file_clone+0x180/0x180 [ 62.503313][ T7268] ? __fget_files+0x32f/0x500 [ 62.507983][ T7268] kvm_vcpu_compat_ioctl+0x1ab/0x350 [ 62.513249][ T7268] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 62.518078][ T7268] ? kvm_vcpu_ioctl+0xe60/0xe60 [ 62.522925][ T7268] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 62.528400][ T7268] do_fast_syscall_32+0x270/0xe90 [ 62.533421][ T7268] entry_SYSENTER_compat+0x70/0x7f [ 62.539906][ T7268] Kernel Offset: disabled [ 62.544242][ T7268] Rebooting in 86400 seconds..