[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.200' (ECDSA) to the list of known hosts. syzkaller login: [ 701.900269][ T6784] IPVS: ftp: loaded support on port[0] = 21 [ 701.971851][ T6784] chnl_net:caif_netlink_parms(): no params data found [ 702.016214][ T6784] bridge0: port 1(bridge_slave_0) entered blocking state [ 702.024872][ T6784] bridge0: port 1(bridge_slave_0) entered disabled state [ 702.033705][ T6784] device bridge_slave_0 entered promiscuous mode [ 702.042337][ T6784] bridge0: port 2(bridge_slave_1) entered blocking state [ 702.050472][ T6784] bridge0: port 2(bridge_slave_1) entered disabled state [ 702.058604][ T6784] device bridge_slave_1 entered promiscuous mode [ 702.076484][ T6784] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 702.088242][ T6784] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 702.108194][ T6784] team0: Port device team_slave_0 added [ 702.115198][ T6784] team0: Port device team_slave_1 added [ 702.130931][ T6784] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 702.138014][ T6784] 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. [ 702.164800][ T6784] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 702.177316][ T6784] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 702.184894][ T6784] 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. [ 702.212224][ T6784] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 702.290519][ T6784] device hsr_slave_0 entered promiscuous mode [ 702.328016][ T6784] device hsr_slave_1 entered promiscuous mode [ 702.437247][ T6784] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 702.490817][ T6784] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 702.549619][ T6784] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 702.609502][ T6784] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 702.661165][ T6784] bridge0: port 2(bridge_slave_1) entered blocking state [ 702.668374][ T6784] bridge0: port 2(bridge_slave_1) entered forwarding state [ 702.676019][ T6784] bridge0: port 1(bridge_slave_0) entered blocking state [ 702.683155][ T6784] bridge0: port 1(bridge_slave_0) entered forwarding state [ 702.720670][ T6784] 8021q: adding VLAN 0 to HW filter on device bond0 [ 702.733600][ T6912] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 702.743938][ T6912] bridge0: port 1(bridge_slave_0) entered disabled state [ 702.752310][ T6912] bridge0: port 2(bridge_slave_1) entered disabled state [ 702.760979][ T6912] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 702.773577][ T6784] 8021q: adding VLAN 0 to HW filter on device team0 [ 702.784576][ T2482] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 702.793056][ T2482] bridge0: port 1(bridge_slave_0) entered blocking state [ 702.800169][ T2482] bridge0: port 1(bridge_slave_0) entered forwarding state [ 702.820108][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 702.828752][ T6995] bridge0: port 2(bridge_slave_1) entered blocking state [ 702.835796][ T6995] bridge0: port 2(bridge_slave_1) entered forwarding state [ 702.844873][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 702.853721][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 702.864607][ T6912] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 702.879822][ T6784] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 702.892234][ T6784] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 702.904252][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 702.913984][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 702.922665][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 702.939132][ T6912] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 702.946472][ T6912] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 702.961073][ T6784] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 702.976675][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 702.985871][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 703.003788][ T6784] device veth0_vlan entered promiscuous mode [ 703.011293][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 703.020474][ T6995] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 703.030002][ T2482] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 703.039131][ T2482] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 703.052780][ T6784] device veth1_vlan entered promiscuous mode [ 703.070625][ T6912] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 703.079408][ T6912] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 703.087219][ T6912] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 703.096653][ T6912] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 703.108171][ T6784] device veth0_macvtap entered promiscuous mode [ 703.116641][ T6784] device veth1_macvtap entered promiscuous mode [ 703.132195][ T6784] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 703.139814][ T2482] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 703.148618][ T2482] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 703.156434][ T2482] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 703.165582][ T2482] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 703.176856][ T6784] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 703.184874][ T6992] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 703.194615][ T6992] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 808.352064][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 808.359169][ C0] rcu: 1-...0: (0 ticks this GP) idle=a96/1/0x4000000000000000 softirq=7931/7931 fqs=5250 [ 808.369398][ C0] (detected by 0, t=10502 jiffies, g=6077, q=355) [ 808.375880][ C0] Sending NMI from CPU 0 to CPUs 1: [ 808.382170][ C0] NMI backtrace for cpu 1 [ 808.382175][ C0] CPU: 1 PID: 6784 Comm: syz-executor352 Not tainted 5.8.0-rc4-syzkaller #0 [ 808.382179][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 808.382182][ C0] RIP: 0010:check_memory_region+0x30/0x2f0 [ 808.382191][ C0] Code: 41 54 53 b0 01 48 85 f6 0f 84 0d 02 00 00 48 89 fb 48 f7 d3 48 39 f3 0f 82 8a 02 00 00 48 89 fb 48 c1 eb 2f 81 fb fe ff 01 00 <0f> 86 77 02 00 00 49 89 fc 49 c1 ec 03 49 b8 00 00 00 00 00 fc ff [ 808.382194][ C0] RSP: 0018:ffffc90000da8d60 EFLAGS: 00000002 [ 808.382200][ C0] RAX: 0000000000000001 RBX: 000000000001ffff RCX: ffffffff81654692 [ 808.382204][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff896d2b68 [ 808.382208][ C0] RBP: ffff8880ae927580 R08: ffffffff81654669 R09: ffffed1015d24eb1 [ 808.382211][ C0] R10: ffffed1015d24eb1 R11: 0000000000000000 R12: ffff8880a785b340 [ 808.382215][ C0] R13: 1ffff11015d24ed2 R14: ffffc90000da8e50 R15: ffff8880a785b340 [ 808.382220][ C0] FS: 0000000001be8880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 808.382223][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 808.382227][ C0] CR2: 0000000020000610 CR3: 000000009ec19000 CR4: 00000000001406e0 [ 808.382231][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 808.382234][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 808.382237][ C0] Call Trace: [ 808.382239][ C0] [ 808.382242][ C0] trace_hrtimer_expire_entry+0x1a2/0x2d0 [ 808.382245][ C0] ? taprio_free_sched_cb+0x1d0/0x1d0 [ 808.382248][ C0] __hrtimer_run_queues+0x3ef/0x930 [ 808.382250][ C0] hrtimer_interrupt+0x373/0xd60 [ 808.382254][ C0] __sysvec_apic_timer_interrupt+0xf0/0x260 [ 808.382256][ C0] asm_call_on_stack+0xf/0x20 [ 808.382258][ C0] [ 808.382261][ C0] sysvec_apic_timer_interrupt+0xb9/0x130 [ 808.382265][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 808.382267][ C0] RIP: 0010:on_each_cpu+0x187/0x1f0 [ 808.382275][ C0] Code: c1 e8 03 42 80 3c 20 00 74 0c 48 c7 c7 f0 c7 2b 89 e8 dd ea 49 00 48 83 3d 65 28 c2 07 00 74 6a e8 7e ec 0a 00 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 5a fa e6 ff 65 8b 1d 5f 5e 98 7e [ 808.382279][ C0] RSP: 0018:ffffc90000d8fe38 EFLAGS: 00000286 [ 808.382284][ C0] RAX: ffffffff81699f92 RBX: 0000000000000286 RCX: ffff8880936c4100 [ 808.382288][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000286 [ 808.382292][ C0] RBP: ffffffff8166a716 R08: ffffffff817a2d20 R09: ffffed1015d24eb1 [ 808.382296][ C0] R10: ffffed1015d24eb1 R11: 0000000000000000 R12: dffffc0000000000 [ 808.382300][ C0] R13: 0000000000000286 R14: 0000000000000000 R15: ffffffff8164c430 [ 808.382302][ C0] ? clock_was_set+0x20/0x20 [ 808.382305][ C0] ? __x64_sys_clock_settime+0x196/0x1c0 [ 808.382308][ C0] ? trace_hardirqs_on+0x30/0x80 [ 808.382311][ C0] ? on_each_cpu+0x182/0x1f0 [ 808.382314][ C0] clock_was_set+0x18/0x20 [ 808.382316][ C0] do_settimeofday64+0x41e/0x520 [ 808.382319][ C0] ? __x64_sys_clock_settime+0x196/0x1c0 [ 808.382322][ C0] __x64_sys_clock_settime+0x196/0x1c0 [ 808.382326][ C0] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 808.382328][ C0] do_syscall_64+0x73/0xe0 [ 808.382331][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 808.382334][ C0] RIP: 0033:0x443849 [ 808.382336][ C0] Code: Bad RIP value. [ 808.382339][ C0] RSP: 002b:00007ffc9a7e6548 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 [ 808.382346][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443849 [ 808.382350][ C0] RDX: 0000000000443849 RSI: 0000000020000400 RDI: 0000000000000000 [ 808.382354][ C0] RBP: 00007ffc9a7e6550 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 808.382358][ C0] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 00007ffc9a7e6560 [ 808.382361][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000