Warning: Permanently added '10.128.0.223' (ECDSA) to the list of known hosts. 2020/08/26 03:05:29 parsed 1 programs 2020/08/26 03:05:29 executed programs: 0 syzkaller login: [ 34.481357] audit: type=1400 audit(1598411129.199:8): avc: denied { execmem } for pid=6377 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 35.655130] IPVS: ftp: loaded support on port[0] = 21 [ 35.731252] chnl_net:caif_netlink_parms(): no params data found [ 35.808943] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.815652] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.823489] device bridge_slave_0 entered promiscuous mode [ 35.830912] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.837660] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.845629] device bridge_slave_1 entered promiscuous mode [ 35.862931] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.872042] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.889822] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.897232] team0: Port device team_slave_0 added [ 35.902725] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.910067] team0: Port device team_slave_1 added [ 35.924938] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.931225] 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. [ 35.957497] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.969023] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.975248] 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. [ 36.001731] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 36.012877] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 36.021705] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 36.041056] device hsr_slave_0 entered promiscuous mode [ 36.046675] device hsr_slave_1 entered promiscuous mode [ 36.053393] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 36.060921] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 36.123393] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.129979] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.136751] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.143164] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.173437] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 36.180608] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.189667] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 36.198498] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.206375] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.214679] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.224287] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 36.231270] 8021q: adding VLAN 0 to HW filter on device team0 [ 36.239748] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 36.248138] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.254499] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.264212] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 36.272124] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.278527] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.297456] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 36.305187] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 36.313489] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 36.321218] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 36.331995] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 36.342418] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 36.348601] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 36.355519] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 36.367941] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 36.377415] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 36.384112] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 36.393684] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 36.445759] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 36.455244] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 36.482608] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 36.489922] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 36.496431] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 36.507097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 36.514443] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 36.522316] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 36.531242] device veth0_vlan entered promiscuous mode [ 36.540772] device veth1_vlan entered promiscuous mode [ 36.546944] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 36.555372] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 36.566413] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 36.575957] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 36.583524] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 36.591432] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 36.601079] device veth0_macvtap entered promiscuous mode [ 36.607585] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 36.615432] device veth1_macvtap entered promiscuous mode [ 36.625190] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 36.635004] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 36.645535] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 36.652396] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 36.660769] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 36.670672] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 36.677695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 36.716693] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 36.840400] ion_buffer_destroy: buffer still mapped in the kernel [ 37.332089] ------------[ cut here ]------------ [ 37.336887] kernel BUG at drivers/dma-buf/dma-buf.c:68! [ 37.342792] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 37.348169] Modules linked in: [ 37.351366] CPU: 1 PID: 6664 Comm: syz-executor.0 Not tainted 4.14.194-syzkaller #0 [ 37.359138] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.368470] task: ffff888094378380 task.stack: ffff888096d30000 [ 37.374540] RIP: 0010:dma_buf_release+0x313/0x5c0 [ 37.379366] RSP: 0018:ffff888096d37b38 EFLAGS: 00010297 [ 37.384703] RAX: ffff888094378380 RBX: ffff888095110340 RCX: 1ffffffff14cf49c [ 37.391952] RDX: 0000000000000000 RSI: ffff888095110340 RDI: ffff888092a64a78 [ 37.399208] RBP: ffff888092a64900 R08: 0000000000000000 R09: 0000000000000000 [ 37.406464] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888095110368 [ 37.413709] R13: ffff8880951103bc R14: ffffffff83afe220 R15: ffff888095110350 [ 37.420967] FS: 00007f6167cbb700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 37.429169] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.435037] CR2: 0000558fda5c26bf CR3: 000000008f156000 CR4: 00000000001406e0 [ 37.442285] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.449541] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.457828] Call Trace: [ 37.460420] ? ima_file_free+0x4f/0x330 [ 37.464371] ? dma_buf_detach+0x240/0x240 [ 37.468508] __fput+0x25f/0x7a0 [ 37.471781] task_work_run+0x11f/0x190 [ 37.475660] get_signal+0x18a3/0x1ca0 [ 37.479449] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 37.484458] ? reservation_object_wait_timeout_rcu+0x93d/0xad0 [ 37.490410] do_signal+0x7c/0x1550 [ 37.493944] ? dma_buf_begin_cpu_access+0xd6/0x120 [ 37.498849] ? dma_buf_ioctl+0x100/0x160 [ 37.502894] ? setup_sigcontext+0x820/0x820 [ 37.507192] ? lock_downgrade+0x740/0x740 [ 37.511331] ? dma_buf_begin_cpu_access+0x120/0x120 [ 37.516336] ? do_vfs_ioctl+0xe2/0xff0 [ 37.520371] ? selinux_inode_setxattr+0x730/0x730 [ 37.525191] ? ioctl_preallocate+0x1a0/0x1a0 [ 37.529592] ? lock_downgrade+0x740/0x740 [ 37.533736] ? check_preemption_disabled+0x35/0x240 [ 37.538729] ? kick_process+0xe4/0x170 [ 37.542590] ? task_work_add+0x87/0xe0 [ 37.546462] ? exit_to_usermode_loop+0x41/0x200 [ 37.551113] exit_to_usermode_loop+0x160/0x200 [ 37.555693] ? SyS_ioctl+0x5c/0xb0 [ 37.559222] do_syscall_64+0x4a3/0x640 [ 37.563100] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 37.568350] RIP: 0033:0x45d579 [ 37.571600] RSP: 002b:00007f6167cbac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 37.579291] RAX: fffffffffffffe00 RBX: 000000000000b000 RCX: 000000000045d579 [ 37.586535] RDX: 0000000020000000 RSI: 0000000040086200 RDI: 0000000000000005 [ 37.593793] RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 [ 37.601040] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c [ 37.608287] R13: 00007fff3ea7779f R14: 00007f6167cbb9c0 R15: 000000000118cf4c [ 37.615555] Code: 31 e4 e8 01 6b a3 fd 48 89 ef e8 49 52 d5 fd e8 f4 b1 ab fd 44 89 e0 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 dd b1 ab fd <0f> 0b e8 d6 b1 ab fd e8 b1 5d 9c fd 48 8d bd 38 02 00 00 48 b8 [ 37.634636] RIP: dma_buf_release+0x313/0x5c0 RSP: ffff888096d37b38 [ 37.642363] ---[ end trace 35a108d8c368791d ]--- [ 37.647151] Kernel panic - not syncing: Fatal exception [ 37.653637] Kernel Offset: disabled [ 37.657248] Rebooting in 86400 seconds..