Warning: Permanently added '10.128.0.77' (ECDSA) to the list of known hosts. 2020/04/19 14:24:02 parsed 1 programs 2020/04/19 14:24:04 executed programs: 0 syzkaller login: [ 37.382489] audit: type=1400 audit(1587306244.858:8): avc: denied { execmem } for pid=6348 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 37.660320] IPVS: ftp: loaded support on port[0] = 21 [ 38.645548] chnl_net:caif_netlink_parms(): no params data found [ 38.714527] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.721314] bridge0: port 1(bridge_slave_0) entered disabled state [ 38.729693] device bridge_slave_0 entered promiscuous mode [ 38.736965] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.743962] bridge0: port 2(bridge_slave_1) entered disabled state [ 38.751122] device bridge_slave_1 entered promiscuous mode [ 38.767586] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 38.776827] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 38.795306] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 38.802563] team0: Port device team_slave_0 added [ 38.808048] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 38.815470] team0: Port device team_slave_1 added [ 38.832943] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 38.839459] 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. [ 38.864754] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 38.876371] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 38.882820] 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. [ 38.909173] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 38.920111] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 38.927686] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 38.981188] device hsr_slave_0 entered promiscuous mode [ 39.028620] device hsr_slave_1 entered promiscuous mode [ 39.069035] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.076130] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.141742] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.148498] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.155348] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.161784] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.193574] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 39.200622] 8021q: adding VLAN 0 to HW filter on device bond0 [ 39.208957] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 39.217155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 39.236913] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.244362] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.255399] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 39.261589] 8021q: adding VLAN 0 to HW filter on device team0 [ 39.270146] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 39.277738] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.284150] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.294385] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 39.302131] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.308531] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.329054] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 39.336739] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 39.345474] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 39.353421] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 39.361546] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 39.370267] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 39.376794] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 39.389831] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 39.397036] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 39.404629] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 39.415108] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 39.470845] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 39.481252] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 39.513481] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 39.520771] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 39.527589] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 39.538986] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 39.546563] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 39.553870] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 39.563243] device veth0_vlan entered promiscuous mode [ 39.573792] device veth1_vlan entered promiscuous mode [ 39.581315] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 39.591188] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 39.604178] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 39.613685] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 39.621045] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 39.628668] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 39.636342] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 39.645383] device veth0_macvtap entered promiscuous mode [ 39.654515] device veth1_macvtap entered promiscuous mode [ 39.663776] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 39.673896] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 39.683955] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 39.691693] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 39.698769] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 39.706494] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 39.717468] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 39.724940] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 39.731607] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 39.739460] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 40.888922] ================================================================== [ 40.896482] BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0 [ 40.903028] Read of size 8 at addr ffff8880876713d8 by task syz-executor.0/6611 [ 40.910500] [ 40.912116] CPU: 1 PID: 6611 Comm: syz-executor.0 Not tainted 4.14.176-syzkaller #0 [ 40.919897] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.929728] Call Trace: [ 40.932314] dump_stack+0x13e/0x194 [ 40.935927] ? __list_add_valid+0x93/0xa0 [ 40.940071] print_address_description.cold+0x7c/0x1e2 [ 40.945362] ? __list_add_valid+0x93/0xa0 [ 40.949500] kasan_report.cold+0xa9/0x2ae [ 40.953634] __list_add_valid+0x93/0xa0 [ 40.957782] rdma_listen+0x580/0x800 [ 40.961481] ucma_listen+0x10b/0x160 [ 40.965183] ? ucma_accept+0x2a0/0x2a0 [ 40.969056] ? _copy_from_user+0x94/0x100 [ 40.973186] ? ucma_accept+0x2a0/0x2a0 [ 40.977057] ucma_write+0x206/0x2c0 [ 40.980665] ? ucma_open+0x280/0x280 [ 40.984396] ? save_trace+0x290/0x290 [ 40.988199] __vfs_write+0xe4/0x630 [ 40.991816] ? ucma_open+0x280/0x280 [ 40.995554] ? kernel_read+0x110/0x110 [ 40.999451] ? __inode_security_revalidate+0xcf/0x120 [ 41.004641] ? avc_policy_seqno+0x5/0x10 [ 41.008697] ? selinux_file_permission+0x7a/0x440 [ 41.013536] ? security_file_permission+0x82/0x1e0 [ 41.018461] ? rw_verify_area+0xe1/0x2a0 [ 41.022501] vfs_write+0x192/0x4e0 [ 41.026031] SyS_write+0xf2/0x210 [ 41.029472] ? SyS_read+0x210/0x210 [ 41.033080] ? SyS_clock_settime+0x1a0/0x1a0 [ 41.037474] ? do_syscall_64+0x4c/0x640 [ 41.042123] ? SyS_read+0x210/0x210 [ 41.045733] do_syscall_64+0x1d5/0x640 [ 41.049619] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.054803] RIP: 0033:0x45c829 [ 41.057991] RSP: 002b:00007f25baafcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 41.065706] RAX: ffffffffffffffda RBX: 000000000050bb40 RCX: 000000000045c829 [ 41.073138] RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003 [ 41.080422] RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 [ 41.088814] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 41.096082] R13: 0000000000000cc2 R14: 00000000004ceed4 R15: 00007f25baafd6d4 [ 41.106040] [ 41.107663] Allocated by task 6604: [ 41.111292] save_stack+0x32/0xa0 [ 41.114813] kasan_kmalloc+0xbf/0xe0 [ 41.118517] kmem_cache_alloc_trace+0x14d/0x7b0 [ 41.123258] rdma_create_id+0x57/0x4c0 [ 41.127131] ucma_create_id+0x18b/0x500 [ 41.131129] ucma_write+0x206/0x2c0 [ 41.134824] __vfs_write+0xe4/0x630 [ 41.138713] vfs_write+0x192/0x4e0 [ 41.142246] SyS_write+0xf2/0x210 [ 41.145679] do_syscall_64+0x1d5/0x640 [ 41.149557] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.154726] [ 41.156349] Freed by task 6604: [ 41.159628] save_stack+0x32/0xa0 [ 41.163727] kasan_slab_free+0x75/0xc0 [ 41.167694] kfree+0xcb/0x260 [ 41.171001] ucma_close+0x105/0x300 [ 41.174764] __fput+0x25f/0x790 [ 41.178049] task_work_run+0x113/0x190 [ 41.181936] get_signal+0x187f/0x1ca0 [ 41.185737] do_signal+0x7c/0x1690 [ 41.189279] exit_to_usermode_loop+0x159/0x220 [ 41.193843] do_syscall_64+0x4a3/0x640 [ 41.197714] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.202894] [ 41.204505] The buggy address belongs to the object at ffff888087671200 [ 41.204505] which belongs to the cache kmalloc-1024 of size 1024 [ 41.217313] The buggy address is located 472 bytes inside of [ 41.217313] 1024-byte region [ffff888087671200, ffff888087671600) [ 41.229307] The buggy address belongs to the page: [ 41.234225] page:ffffea00021d9c00 count:1 mapcount:0 mapping:ffff888087670000 index:0x0 compound_mapcount: 0 [ 41.244624] flags: 0xfffe0000008100(slab|head) [ 41.249191] raw: 00fffe0000008100 ffff888087670000 0000000000000000 0000000100000007 [ 41.257052] raw: ffffea0002430420 ffffea0002230220 ffff88812fe56ac0 0000000000000000 [ 41.264910] page dumped because: kasan: bad access detected [ 41.270760] [ 41.272376] Memory state around the buggy address: [ 41.277420] ffff888087671280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 41.284781] ffff888087671300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 41.292141] >ffff888087671380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 41.299485] ^ [ 41.305709] ffff888087671400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 41.313322] ffff888087671480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 41.320702] ================================================================== [ 41.328061] Disabling lock debugging due to kernel taint [ 41.340735] Kernel panic - not syncing: panic_on_warn set ... [ 41.340735] [ 41.348217] CPU: 1 PID: 6611 Comm: syz-executor.0 Tainted: G B 4.14.176-syzkaller #0 [ 41.357221] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.366571] Call Trace: [ 41.369156] dump_stack+0x13e/0x194 [ 41.372948] panic+0x1f9/0x42d [ 41.376916] ? add_taint.cold+0x16/0x16 [ 41.380873] ? preempt_schedule_common+0x4a/0xc0 [ 41.385639] ? __list_add_valid+0x93/0xa0 [ 41.389854] ? ___preempt_schedule+0x16/0x18 [ 41.394825] ? __list_add_valid+0x93/0xa0 [ 41.399048] kasan_end_report+0x43/0x49 [ 41.403003] kasan_report.cold+0x12f/0x2ae [ 41.407274] __list_add_valid+0x93/0xa0 [ 41.411238] rdma_listen+0x580/0x800 [ 41.414935] ucma_listen+0x10b/0x160 [ 41.418632] ? ucma_accept+0x2a0/0x2a0 [ 41.422523] ? _copy_from_user+0x94/0x100 [ 41.426652] ? ucma_accept+0x2a0/0x2a0 [ 41.430523] ucma_write+0x206/0x2c0 [ 41.434152] ? ucma_open+0x280/0x280 [ 41.437845] ? save_trace+0x290/0x290 [ 41.441634] __vfs_write+0xe4/0x630 [ 41.445273] ? ucma_open+0x280/0x280 [ 41.448990] ? kernel_read+0x110/0x110 [ 41.452865] ? __inode_security_revalidate+0xcf/0x120 [ 41.458042] ? avc_policy_seqno+0x5/0x10 [ 41.462087] ? selinux_file_permission+0x7a/0x440 [ 41.466935] ? security_file_permission+0x82/0x1e0 [ 41.471847] ? rw_verify_area+0xe1/0x2a0 [ 41.475925] vfs_write+0x192/0x4e0 [ 41.479451] SyS_write+0xf2/0x210 [ 41.482892] ? SyS_read+0x210/0x210 [ 41.486505] ? SyS_clock_settime+0x1a0/0x1a0 [ 41.490899] ? do_syscall_64+0x4c/0x640 [ 41.494852] ? SyS_read+0x210/0x210 [ 41.498472] do_syscall_64+0x1d5/0x640 [ 41.502351] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.507666] RIP: 0033:0x45c829 [ 41.510838] RSP: 002b:00007f25baafcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 41.518532] RAX: ffffffffffffffda RBX: 000000000050bb40 RCX: 000000000045c829 [ 41.525850] RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003 [ 41.533115] RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 [ 41.540379] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 41.547635] R13: 0000000000000cc2 R14: 00000000004ceed4 R15: 00007f25baafd6d4 [ 41.556715] Kernel Offset: disabled [ 41.560360] Rebooting in 86400 seconds..