Warning: Permanently added '10.128.1.21' (ECDSA) to the list of known hosts. 2020/04/16 12:06:33 parsed 1 programs 2020/04/16 12:06:35 executed programs: 0 [ 36.787888] audit: type=1400 audit(1587038795.218:8): avc: denied { execmem } for pid=6356 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 37.061834] IPVS: ftp: loaded support on port[0] = 21 [ 37.858570] chnl_net:caif_netlink_parms(): no params data found [ 37.951634] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.958400] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.966125] device bridge_slave_0 entered promiscuous mode [ 37.973839] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.980793] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.987855] device bridge_slave_1 entered promiscuous mode [ 38.006270] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 38.015331] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 38.034295] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 38.041596] team0: Port device team_slave_0 added [ 38.047045] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 38.055508] team0: Port device team_slave_1 added [ 38.070720] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 38.076973] 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. [ 38.102189] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 38.113669] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 38.119910] 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. [ 38.145800] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 38.156741] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 38.164725] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 38.222693] device hsr_slave_0 entered promiscuous mode [ 38.280224] device hsr_slave_1 entered promiscuous mode [ 38.320573] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 38.327692] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 38.394061] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.400683] bridge0: port 2(bridge_slave_1) entered forwarding state [ 38.407695] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.414110] bridge0: port 1(bridge_slave_0) entered forwarding state [ 38.445402] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 38.451556] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.459448] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 38.468412] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 38.487386] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.494995] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.506092] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 38.512581] 8021q: adding VLAN 0 to HW filter on device team0 [ 38.522668] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 38.530855] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.537208] bridge0: port 1(bridge_slave_0) entered forwarding state [ 38.558249] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 38.568372] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 38.580792] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 38.588691] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 38.596519] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.603083] bridge0: port 2(bridge_slave_1) entered forwarding state [ 38.611231] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 38.619008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 38.627092] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 38.634942] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 38.642741] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 38.649765] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 38.662197] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 38.670396] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 38.677092] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 38.688810] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 38.740772] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 38.751368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 38.784238] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 38.792089] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 38.798609] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 38.811155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 38.819156] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 38.826459] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 38.833946] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 38.843394] device veth0_vlan entered promiscuous mode [ 38.852780] device veth1_vlan entered promiscuous mode [ 38.866109] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 38.874937] IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready [ 38.882870] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 38.892070] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 38.902148] device veth0_macvtap entered promiscuous mode [ 38.908357] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 38.917129] device veth1_macvtap entered promiscuous mode [ 38.924013] IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready [ 38.932570] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 38.944643] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 38.954300] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 38.961945] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 38.968879] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 38.976584] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 38.984005] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 38.991992] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 39.002698] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 39.010048] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 39.016783] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 39.024991] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 40.061620] ================================================================== [ 40.069116] BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0 [ 40.075689] Read of size 8 at addr ffff888096338698 by task syz-executor.0/6628 [ 40.083119] [ 40.084734] CPU: 1 PID: 6628 Comm: syz-executor.0 Not tainted 4.14.176-syzkaller #0 [ 40.093644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.103184] Call Trace: [ 40.105779] dump_stack+0x13e/0x194 [ 40.109570] ? __list_add_valid+0x93/0xa0 [ 40.113719] print_address_description.cold+0x7c/0x1e2 [ 40.118995] ? __list_add_valid+0x93/0xa0 [ 40.123139] kasan_report.cold+0xa9/0x2ae [ 40.127505] __list_add_valid+0x93/0xa0 [ 40.131729] rdma_listen+0x580/0x800 [ 40.135430] ucma_listen+0x10b/0x160 [ 40.139129] ? ucma_accept+0x2a0/0x2a0 [ 40.143021] ? _copy_from_user+0x94/0x100 [ 40.147166] ? ucma_accept+0x2a0/0x2a0 [ 40.151034] ucma_write+0x206/0x2c0 [ 40.154646] ? ucma_open+0x280/0x280 [ 40.158374] ? save_trace+0x290/0x290 [ 40.162162] __vfs_write+0xe4/0x630 [ 40.165773] ? ucma_open+0x280/0x280 [ 40.169469] ? kernel_read+0x110/0x110 [ 40.173339] ? __inode_security_revalidate+0xcf/0x120 [ 40.178548] ? avc_policy_seqno+0x5/0x10 [ 40.182608] ? selinux_file_permission+0x7a/0x440 [ 40.187463] ? security_file_permission+0x82/0x1e0 [ 40.192404] ? rw_verify_area+0xe1/0x2a0 [ 40.196452] vfs_write+0x192/0x4e0 [ 40.199981] SyS_write+0xf2/0x210 [ 40.203856] ? SyS_read+0x210/0x210 [ 40.207472] ? SyS_clock_settime+0x1a0/0x1a0 [ 40.211967] ? do_syscall_64+0x4c/0x640 [ 40.215949] ? SyS_read+0x210/0x210 [ 40.219566] do_syscall_64+0x1d5/0x640 [ 40.223461] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.228653] RIP: 0033:0x45c889 [ 40.231842] RSP: 002b:00007f84705d5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.239542] RAX: ffffffffffffffda RBX: 00007f84705d66d4 RCX: 000000000045c889 [ 40.246920] RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003 [ 40.254634] RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 [ 40.261890] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 40.269839] R13: 0000000000000cc2 R14: 00000000004ceeb6 R15: 000000000076bf0c [ 40.277098] [ 40.278710] Allocated by task 6620: [ 40.282340] save_stack+0x32/0xa0 [ 40.285774] kasan_kmalloc+0xbf/0xe0 [ 40.289467] kmem_cache_alloc_trace+0x14d/0x7b0 [ 40.294823] rdma_create_id+0x57/0x4c0 [ 40.298842] ucma_create_id+0x18b/0x500 [ 40.302875] ucma_write+0x206/0x2c0 [ 40.306513] __vfs_write+0xe4/0x630 [ 40.310156] vfs_write+0x192/0x4e0 [ 40.313687] SyS_write+0xf2/0x210 [ 40.317132] do_syscall_64+0x1d5/0x640 [ 40.321177] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.326781] [ 40.328393] Freed by task 6624: [ 40.331798] save_stack+0x32/0xa0 [ 40.335235] kasan_slab_free+0x75/0xc0 [ 40.339135] kfree+0xcb/0x260 [ 40.342230] ucma_close+0x105/0x300 [ 40.345882] __fput+0x25f/0x790 [ 40.349162] task_work_run+0x113/0x190 [ 40.353049] get_signal+0x187f/0x1ca0 [ 40.356835] do_signal+0x7c/0x1690 [ 40.360364] exit_to_usermode_loop+0x159/0x220 [ 40.364983] do_syscall_64+0x4a3/0x640 [ 40.368867] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.374193] [ 40.375808] The buggy address belongs to the object at ffff8880963384c0 [ 40.375808] which belongs to the cache kmalloc-1024 of size 1024 [ 40.388781] The buggy address is located 472 bytes inside of [ 40.388781] 1024-byte region [ffff8880963384c0, ffff8880963388c0) [ 40.401115] The buggy address belongs to the page: [ 40.406036] page:ffffea000258ce00 count:1 mapcount:0 mapping:ffff888096338040 index:0x0 compound_mapcount: 0 [ 40.416158] flags: 0xfffe0000008100(slab|head) [ 40.420734] raw: 00fffe0000008100 ffff888096338040 0000000000000000 0000000100000007 [ 40.428606] raw: ffffea00025232a0 ffffea00025145a0 ffff88812fe56ac0 0000000000000000 [ 40.436484] page dumped because: kasan: bad access detected [ 40.442187] [ 40.443816] Memory state around the buggy address: [ 40.448738] ffff888096338580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.456883] ffff888096338600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.464235] >ffff888096338680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.471577] ^ [ 40.475731] ffff888096338700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.483088] ffff888096338780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 40.490947] ================================================================== [ 40.498987] Disabling lock debugging due to kernel taint [ 40.510645] Kernel panic - not syncing: panic_on_warn set ... [ 40.510645] [ 40.518323] CPU: 1 PID: 6628 Comm: syz-executor.0 Tainted: G B 4.14.176-syzkaller #0 [ 40.527333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.536685] Call Trace: [ 40.539469] dump_stack+0x13e/0x194 [ 40.543111] panic+0x1f9/0x42d [ 40.546291] ? add_taint.cold+0x16/0x16 [ 40.550439] ? preempt_schedule_common+0x4a/0xc0 [ 40.555187] ? __list_add_valid+0x93/0xa0 [ 40.559348] ? ___preempt_schedule+0x16/0x18 [ 40.563742] ? __list_add_valid+0x93/0xa0 [ 40.567878] kasan_end_report+0x43/0x49 [ 40.571834] kasan_report.cold+0x12f/0x2ae [ 40.576051] __list_add_valid+0x93/0xa0 [ 40.580006] rdma_listen+0x580/0x800 [ 40.583715] ucma_listen+0x10b/0x160 [ 40.587411] ? ucma_accept+0x2a0/0x2a0 [ 40.591282] ? _copy_from_user+0x94/0x100 [ 40.595434] ? ucma_accept+0x2a0/0x2a0 [ 40.599336] ucma_write+0x206/0x2c0 [ 40.602949] ? ucma_open+0x280/0x280 [ 40.606661] ? save_trace+0x290/0x290 [ 40.610462] __vfs_write+0xe4/0x630 [ 40.614186] ? ucma_open+0x280/0x280 [ 40.617903] ? kernel_read+0x110/0x110 [ 40.621773] ? __inode_security_revalidate+0xcf/0x120 [ 40.626943] ? avc_policy_seqno+0x5/0x10 [ 40.631135] ? selinux_file_permission+0x7a/0x440 [ 40.635970] ? security_file_permission+0x82/0x1e0 [ 40.641080] ? rw_verify_area+0xe1/0x2a0 [ 40.645294] vfs_write+0x192/0x4e0 [ 40.648974] SyS_write+0xf2/0x210 [ 40.652430] ? SyS_read+0x210/0x210 [ 40.656043] ? SyS_clock_settime+0x1a0/0x1a0 [ 40.660492] ? do_syscall_64+0x4c/0x640 [ 40.664450] ? SyS_read+0x210/0x210 [ 40.668090] do_syscall_64+0x1d5/0x640 [ 40.671968] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.677137] RIP: 0033:0x45c889 [ 40.680312] RSP: 002b:00007f84705d5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.688085] RAX: ffffffffffffffda RBX: 00007f84705d66d4 RCX: 000000000045c889 [ 40.695338] RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003 [ 40.702589] RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 [ 40.709866] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 40.717118] R13: 0000000000000cc2 R14: 00000000004ceeb6 R15: 000000000076bf0c [ 40.726024] Kernel Offset: disabled [ 40.729672] Rebooting in 86400 seconds..