[[0;32m OK [0m] Started Getty on tty2.
[[0;32m OK [0m] Started Getty on tty1.
[[0;32m OK [0m] Started Serial Getty on ttyS0.
[[0;32m OK [0m] Reached target Login Prompts.
[[0;32m OK [0m] Reached target Multi-User System.
[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Starting Load/Save RF Kill Switch Status...
[[0;32m OK [0m] Started Load/Save RF Kill Switch Status.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.0.161' (ECDSA) to the list of known hosts.
2020/04/08 17:48:44 parsed 1 programs
2020/04/08 17:48:47 executed programs: 0
syzkaller login: [ 44.076235] audit: type=1400 audit(1586368127.047:8): avc: denied { execmem } for pid=6455 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[ 44.108696] IPVS: ftp: loaded support on port[0] = 21
[ 44.199602] chnl_net:caif_netlink_parms(): no params data found
[ 44.307835] bridge0: port 1(bridge_slave_0) entered blocking state
[ 44.314861] bridge0: port 1(bridge_slave_0) entered disabled state
[ 44.322166] device bridge_slave_0 entered promiscuous mode
[ 44.330827] bridge0: port 2(bridge_slave_1) entered blocking state
[ 44.337921] bridge0: port 2(bridge_slave_1) entered disabled state
[ 44.345749] device bridge_slave_1 entered promiscuous mode
[ 44.363973] bond0: Enslaving bond_slave_0 as an active interface with an up link
[ 44.373003] bond0: Enslaving bond_slave_1 as an active interface with an up link
[ 44.393293] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready
[ 44.401010] team0: Port device team_slave_0 added
[ 44.407183] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready
[ 44.414810] team0: Port device team_slave_1 added
[ 44.430746] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 44.437194] 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.
[ 44.462458] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 44.474467] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 44.480723] 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.
[ 44.506268] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 44.517389] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
[ 44.525498] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
[ 44.587173] device hsr_slave_0 entered promiscuous mode
[ 44.634638] device hsr_slave_1 entered promiscuous mode
[ 44.685097] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready
[ 44.692349] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready
[ 44.767326] bridge0: port 2(bridge_slave_1) entered blocking state
[ 44.773782] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 44.780810] bridge0: port 1(bridge_slave_0) entered blocking state
[ 44.787262] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 44.822585] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready
[ 44.829859] 8021q: adding VLAN 0 to HW filter on device bond0
[ 44.839140] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
[ 44.849329] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 44.868509] bridge0: port 1(bridge_slave_0) entered disabled state
[ 44.875860] bridge0: port 2(bridge_slave_1) entered disabled state
[ 44.882872] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 44.895357] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready
[ 44.901523] 8021q: adding VLAN 0 to HW filter on device team0
[ 44.911431] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 44.919305] bridge0: port 1(bridge_slave_0) entered blocking state
[ 44.925865] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 44.936043] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 44.943594] bridge0: port 2(bridge_slave_1) entered blocking state
[ 44.949979] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 44.966735] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 44.975550] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 44.986824] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 45.000329] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 45.010703] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 45.021916] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready
[ 45.028540] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 45.036785] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 45.045842] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 45.058755] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready
[ 45.067062] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 45.073733] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 45.086488] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 45.099123] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready
[ 45.109467] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 45.147085] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready
[ 45.155053] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready
[ 45.161613] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready
[ 45.172256] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 45.180806] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 45.188600] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 45.198765] device veth0_vlan entered promiscuous mode
[ 45.208694] device veth1_vlan entered promiscuous mode
[ 45.223803] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready
[ 45.233314] IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready
[ 45.240867] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
[ 45.249659] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 45.259634] device veth0_macvtap entered promiscuous mode
[ 45.266772] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
[ 45.275864] device veth1_macvtap entered promiscuous mode
[ 45.282020] IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready
[ 45.292363] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready
[ 45.302103] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
[ 45.311977] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready
[ 45.320623] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 45.328452] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[ 45.336592] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
[ 45.343689] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[ 45.352230] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 45.363654] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
[ 45.370929] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 45.377642] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[ 45.385589] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 45.823444] ==================================================================
[ 45.831094] BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0
[ 45.837598] Read of size 8 at addr ffff8880a0194b20 by task syz-executor.0/6738
[ 45.845042]
[ 45.846662] CPU: 1 PID: 6738 Comm: syz-executor.0 Not tainted 4.19.114-syzkaller #0
[ 45.854439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 45.863818] Call Trace:
[ 45.866411] dump_stack+0x188/0x20d
[ 45.870043] ? __list_add_valid+0x93/0xa0
[ 45.874302] print_address_description.cold+0x7c/0x212
[ 45.879615] ? __list_add_valid+0x93/0xa0
[ 45.883755] kasan_report.cold+0x88/0x2b9
[ 45.887903] __list_add_valid+0x93/0xa0
[ 45.891887] rdma_listen+0x609/0x880
[ 45.895599] ucma_listen+0x14d/0x1c0
[ 45.899311] ? ucma_notify+0x190/0x190
[ 45.903189] ? __might_fault+0x192/0x1d0
[ 45.907349] ? _copy_from_user+0xd2/0x140
[ 45.911493] ? ucma_notify+0x190/0x190
[ 45.915374] ucma_write+0x285/0x350
[ 45.918987] ? ucma_open+0x280/0x280
[ 45.922692] ? __fget+0x319/0x510
[ 45.926141] __vfs_write+0xf7/0x760
[ 45.929752] ? ucma_open+0x280/0x280
[ 45.933449] ? kernel_read+0x110/0x110
[ 45.937326] ? __inode_security_revalidate+0xd3/0x120
[ 45.942512] ? avc_policy_seqno+0x9/0x70
[ 45.946574] ? selinux_file_permission+0x87/0x520
[ 45.951406] ? security_file_permission+0x84/0x220
[ 45.956337] vfs_write+0x206/0x550
[ 45.959877] ksys_write+0x12b/0x2a0
[ 45.963491] ? __ia32_sys_read+0xb0/0xb0
[ 45.967538] ? __ia32_sys_clock_settime+0x260/0x260
[ 45.972550] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 45.977289] ? trace_hardirqs_off_caller+0x55/0x210
[ 45.982300] ? do_syscall_64+0x21/0x620
[ 45.986261] do_syscall_64+0xf9/0x620
[ 45.990068] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 45.995253] RIP: 0033:0x45c889
[ 45.998434] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
[ 46.017495] RSP: 002b:00007f83ed078c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 46.025186] RAX: ffffffffffffffda RBX: 00007f83ed0796d4 RCX: 000000000045c889
[ 46.032465] RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003
[ 46.039716] RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
[ 46.046976] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
[ 46.054248] R13: 0000000000000cc0 R14: 00000000004cee8e R15: 000000000076bf0c
[ 46.061512]
[ 46.063125] Allocated by task 6730:
[ 46.066739] kasan_kmalloc+0xbf/0xe0
[ 46.070440] kmem_cache_alloc_trace+0x14d/0x7a0
[ 46.075093] __rdma_create_id+0x5b/0x630
[ 46.079136] ucma_create_id+0x1cb/0x5a0
[ 46.083093] ucma_write+0x285/0x350
[ 46.086703] __vfs_write+0xf7/0x760
[ 46.090311] vfs_write+0x206/0x550
[ 46.093832] ksys_write+0x12b/0x2a0
[ 46.097451] do_syscall_64+0xf9/0x620
[ 46.101248] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 46.106418]
[ 46.108049] Freed by task 6730:
[ 46.111313] __kasan_slab_free+0xf7/0x140
[ 46.115446] kfree+0xce/0x220
[ 46.118543] ucma_close+0x10b/0x320
[ 46.122155] __fput+0x2cd/0x890
[ 46.125424] task_work_run+0x13f/0x1b0
[ 46.129309] exit_to_usermode_loop+0x25a/0x2b0
[ 46.133882] do_syscall_64+0x538/0x620
[ 46.137776] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 46.142941]
[ 46.144555] The buggy address belongs to the object at ffff8880a0194940
[ 46.144555] which belongs to the cache kmalloc-2048 of size 2048
[ 46.157456] The buggy address is located 480 bytes inside of
[ 46.157456] 2048-byte region [ffff8880a0194940, ffff8880a0195140)
[ 46.169396] The buggy address belongs to the page:
[ 46.174309] page:ffffea0002806500 count:1 mapcount:0 mapping:ffff88812c3dcc40 index:0x0 compound_mapcount: 0
[ 46.184275] flags: 0xfffe0000008100(slab|head)
[ 46.188860] raw: 00fffe0000008100 ffffea000220bd08 ffffea00022e6a08 ffff88812c3dcc40
[ 46.196745] raw: 0000000000000000 ffff8880a01940c0 0000000100000003 0000000000000000
[ 46.204650] page dumped because: kasan: bad access detected
[ 46.210341]
[ 46.211961] Memory state around the buggy address:
[ 46.216875] ffff8880a0194a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 46.224234] ffff8880a0194a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 46.231601] >ffff8880a0194b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 46.238958] ^
[ 46.243357] ffff8880a0194b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 46.250911] ffff8880a0194c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 46.258269] ==================================================================
[ 46.265763] Disabling lock debugging due to kernel taint
[ 46.277438] Kernel panic - not syncing: panic_on_warn set ...
[ 46.277438]
[ 46.284844] CPU: 1 PID: 6738 Comm: syz-executor.0 Tainted: G B 4.19.114-syzkaller #0
[ 46.294032] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 46.303410] Call Trace:
[ 46.306009] dump_stack+0x188/0x20d
[ 46.309648] panic+0x26a/0x50e
[ 46.312857] ? __warn_printk+0xf3/0xf3
[ 46.316749] ? preempt_schedule_common+0x4a/0xc0
[ 46.321489] ? __list_add_valid+0x93/0xa0
[ 46.325623] ? ___preempt_schedule+0x16/0x18
[ 46.330118] ? trace_hardirqs_on+0x55/0x210
[ 46.334485] ? __list_add_valid+0x93/0xa0
[ 46.338616] kasan_end_report+0x43/0x49
[ 46.342626] kasan_report.cold+0xa4/0x2b9
[ 46.346772] __list_add_valid+0x93/0xa0
[ 46.350808] rdma_listen+0x609/0x880
[ 46.354521] ucma_listen+0x14d/0x1c0
[ 46.358224] ? ucma_notify+0x190/0x190
[ 46.362143] ? __might_fault+0x192/0x1d0
[ 46.366188] ? _copy_from_user+0xd2/0x140
[ 46.370320] ? ucma_notify+0x190/0x190
[ 46.374203] ucma_write+0x285/0x350
[ 46.377911] ? ucma_open+0x280/0x280
[ 46.381615] ? __fget+0x319/0x510
[ 46.385103] __vfs_write+0xf7/0x760
[ 46.388717] ? ucma_open+0x280/0x280
[ 46.393181] ? kernel_read+0x110/0x110
[ 46.397079] ? __inode_security_revalidate+0xd3/0x120
[ 46.402304] ? avc_policy_seqno+0x9/0x70
[ 46.406394] ? selinux_file_permission+0x87/0x520
[ 46.411234] ? security_file_permission+0x84/0x220
[ 46.416153] vfs_write+0x206/0x550
[ 46.419681] ksys_write+0x12b/0x2a0
[ 46.423291] ? __ia32_sys_read+0xb0/0xb0
[ 46.427339] ? __ia32_sys_clock_settime+0x260/0x260
[ 46.432343] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 46.437096] ? trace_hardirqs_off_caller+0x55/0x210
[ 46.442096] ? do_syscall_64+0x21/0x620
[ 46.446055] do_syscall_64+0xf9/0x620
[ 46.449843] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 46.455031] RIP: 0033:0x45c889
[ 46.458215] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
[ 46.477225] RSP: 002b:00007f83ed078c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 46.484921] RAX: ffffffffffffffda RBX: 00007f83ed0796d4 RCX: 000000000045c889
[ 46.492178] RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000003
[ 46.499442] RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
[ 46.506708] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
[ 46.513968] R13: 0000000000000cc0 R14: 00000000004cee8e R15: 000000000076bf0c
[ 46.522639] Kernel Offset: disabled
[ 46.526264] Rebooting in 86400 seconds..