[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts.
2020/08/22 02:20:28 parsed 1 programs
2020/08/22 02:20:28 executed programs: 0
syzkaller login: [ 1049.919927][ T6850] IPVS: ftp: loaded support on port[0] = 21
[ 1050.072070][ T6850] chnl_net:caif_netlink_parms(): no params data found
[ 1050.125616][ T6850] bridge0: port 1(bridge_slave_0) entered blocking state
[ 1050.134003][ T6850] bridge0: port 1(bridge_slave_0) entered disabled state
[ 1050.142642][ T6850] device bridge_slave_0 entered promiscuous mode
[ 1050.151695][ T6850] bridge0: port 2(bridge_slave_1) entered blocking state
[ 1050.159075][ T6850] bridge0: port 2(bridge_slave_1) entered disabled state
[ 1050.167379][ T6850] device bridge_slave_1 entered promiscuous mode
[ 1050.187629][ T6850] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 1050.199120][ T6850] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 1050.221354][ T6850] team0: Port device team_slave_0 added
[ 1050.228567][ T6850] team0: Port device team_slave_1 added
[ 1050.246472][ T6850] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 1050.253537][ T6850] 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.
[ 1050.280304][ T6850] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 1050.293014][ T6850] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 1050.300515][ T6850] 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.
[ 1050.326994][ T6850] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 1050.354170][ T6850] device hsr_slave_0 entered promiscuous mode
[ 1050.360945][ T6850] device hsr_slave_1 entered promiscuous mode
[ 1050.452897][ T6850] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 1050.462848][ T6850] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 1050.479278][ T6850] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 1050.488356][ T6850] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 1050.514452][ T6850] bridge0: port 2(bridge_slave_1) entered blocking state
[ 1050.521618][ T6850] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 1050.529574][ T6850] bridge0: port 1(bridge_slave_0) entered blocking state
[ 1050.536707][ T6850] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 1050.582636][ T6850] 8021q: adding VLAN 0 to HW filter on device bond0
[ 1050.595467][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 1050.606442][ T6820] bridge0: port 1(bridge_slave_0) entered disabled state
[ 1050.614654][ T6820] bridge0: port 2(bridge_slave_1) entered disabled state
[ 1050.623359][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 1050.637924][ T6850] 8021q: adding VLAN 0 to HW filter on device team0
[ 1050.650639][ T7072] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 1050.659694][ T7072] bridge0: port 1(bridge_slave_0) entered blocking state
[ 1050.666803][ T7072] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 1050.686714][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 1050.695159][ T6820] bridge0: port 2(bridge_slave_1) entered blocking state
[ 1050.702272][ T6820] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 1050.710664][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 1050.726547][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 1050.734460][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 1050.743700][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 1050.758172][ T7072] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 1050.768460][ T6850] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 1050.788428][ T7072] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 1050.795911][ T7072] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 1050.809581][ T6850] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 1050.837090][ T7072] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 1050.850312][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 1050.859573][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 1050.867708][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 1050.878147][ T6850] device veth0_vlan entered promiscuous mode
[ 1050.892276][ T6850] device veth1_vlan entered promiscuous mode
[ 1050.914000][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[ 1050.923034][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
[ 1050.931708][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 1050.942196][ T6850] device veth0_macvtap entered promiscuous mode
[ 1050.953277][ T6850] device veth1_macvtap entered promiscuous mode
[ 1050.970438][ T6850] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 1050.978563][ T6761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 1050.988171][ T6761] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[ 1051.000841][ T6850] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 1051.008429][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 1051.021723][ T6850] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 1051.031994][ T6850] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 1051.041338][ T6850] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 1051.050088][ T6850] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 1051.927554][ T7092] Bluetooth: hci0: command 0x0409 tx timeout
2020/08/22 02:20:33 executed programs: 68
[ 1053.996130][ T7072] Bluetooth: hci0: command 0x041b tx timeout
[ 1056.085610][ T7090] Bluetooth: hci0: command 0x040f tx timeout
[ 1058.155339][ T7073] Bluetooth: hci0: command 0x0419 tx timeout
2020/08/22 02:20:38 executed programs: 197
2020/08/22 02:20:43 executed programs: 330
2020/08/22 02:20:48 executed programs: 462
2020/08/22 02:20:53 executed programs: 595
2020/08/22 02:20:58 executed programs: 722
[ 1079.163638][T13352] ==================================================================
[ 1079.171997][T13352] BUG: KASAN: use-after-free in do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.179630][T13352] Read of size 8 at addr ffff8880a7e5eda8 by task syz-executor.0/13352
[ 1079.187837][T13352] 
[ 1079.190147][T13352] CPU: 1 PID: 13352 Comm: syz-executor.0 Not tainted 5.9.0-rc1-syzkaller #0
[ 1079.198786][T13352] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1079.209020][T13352] Call Trace:
[ 1079.212430][T13352]  dump_stack+0x18f/0x20d
[ 1079.216767][T13352]  ? do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.222050][T13352]  ? do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.227396][T13352]  print_address_description.constprop.0.cold+0xae/0x497
[ 1079.234462][T13352]  ? __up_read+0x338/0x7b0
[ 1079.238973][T13352]  ? vprintk_func+0x97/0x1a6
[ 1079.243569][T13352]  ? do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.248856][T13352]  ? do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.254143][T13352]  kasan_report.cold+0x1f/0x37
[ 1079.258904][T13352]  ? do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.264166][T13352]  do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.269310][T13352]  ? _copy_to_user+0x126/0x160
[ 1079.274061][T13352]  ? swapin_walk_pmd_entry+0x7b0/0x7b0
[ 1079.279548][T13352]  ? put_timespec64+0xcb/0x120
[ 1079.284301][T13352]  ? ns_to_timespec64+0xc0/0xc0
[ 1079.289199][T13352]  ? lock_is_held_type+0xbb/0xf0
[ 1079.294117][T13352]  ? lock_is_held_type+0xbb/0xf0
[ 1079.299042][T13352]  ? syscall_enter_from_user_mode+0x20/0x290
[ 1079.305000][T13352]  ? lockdep_hardirqs_on_prepare+0x354/0x530
[ 1079.310958][T13352]  __x64_sys_madvise+0xd9/0x110
[ 1079.315789][T13352]  do_syscall_64+0x2d/0x70
[ 1079.320229][T13352]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1079.326096][T13352] RIP: 0033:0x45d4d9
[ 1079.329967][T13352] Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
[ 1079.349547][T13352] RSP: 002b:00007f775f6bac78 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[ 1079.357933][T13352] RAX: ffffffffffffffda RBX: 0000000000020800 RCX: 000000000045d4d9
[ 1079.365888][T13352] RDX: 0000000000000003 RSI: 0000000000600003 RDI: 0000000020000000
[ 1079.373924][T13352] RBP: 000000000118d020 R08: 0000000000000000 R09: 0000000000000000
[ 1079.381871][T13352] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cfec
[ 1079.389815][T13352] R13: 00007ffc20ee540f R14: 00007f775f6bb9c0 R15: 000000000118cfec
[ 1079.397766][T13352] 
[ 1079.400118][T13352] Allocated by task 13348:
[ 1079.404521][T13352]  kasan_save_stack+0x1b/0x40
[ 1079.409174][T13352]  __kasan_kmalloc.constprop.0+0xbf/0xd0
[ 1079.414787][T13352]  kmem_cache_alloc+0x138/0x3a0
[ 1079.419808][T13352]  vm_area_alloc+0x1c/0x110
[ 1079.424331][T13352]  mmap_region+0x8e5/0x1780
[ 1079.428816][T13352]  do_mmap+0xcf9/0x11d0
[ 1079.432984][T13352]  vm_mmap_pgoff+0x195/0x200
[ 1079.437551][T13352]  ksys_mmap_pgoff+0x43a/0x560
[ 1079.442290][T13352]  do_syscall_64+0x2d/0x70
[ 1079.446682][T13352]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1079.452544][T13352] 
[ 1079.454855][T13352] Freed by task 13348:
[ 1079.458901][T13352]  kasan_save_stack+0x1b/0x40
[ 1079.463560][T13352]  kasan_set_track+0x1c/0x30
[ 1079.468133][T13352]  kasan_set_free_info+0x1b/0x30
[ 1079.473043][T13352]  __kasan_slab_free+0xd8/0x120
[ 1079.477877][T13352]  kmem_cache_free.part.0+0x67/0x1f0
[ 1079.483185][T13352]  remove_vma+0x132/0x170
[ 1079.487509][T13352]  __do_munmap+0x743/0x1170
[ 1079.491985][T13352]  mmap_region+0x257/0x1780
[ 1079.496460][T13352]  do_mmap+0xcf9/0x11d0
[ 1079.500589][T13352]  vm_mmap_pgoff+0x195/0x200
[ 1079.505168][T13352]  ksys_mmap_pgoff+0x43a/0x560
[ 1079.509910][T13352]  do_syscall_64+0x2d/0x70
[ 1079.514345][T13352]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1079.520206][T13352] 
[ 1079.522512][T13352] The buggy address belongs to the object at ffff8880a7e5eda8
[ 1079.522512][T13352]  which belongs to the cache vm_area_struct of size 200
[ 1079.536798][T13352] The buggy address is located 0 bytes inside of
[ 1079.536798][T13352]  200-byte region [ffff8880a7e5eda8, ffff8880a7e5ee70)
[ 1079.549865][T13352] The buggy address belongs to the page:
[ 1079.555476][T13352] page:00000000b39fa1b6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xa7e5e
[ 1079.565645][T13352] flags: 0xfffe0000000200(slab)
[ 1079.570476][T13352] raw: 00fffe0000000200 ffffea000268f1c8 ffffea000263dd48 ffff8880aa06f500
[ 1079.579046][T13352] raw: 0000000000000000 ffff8880a7e5e040 000000010000000f 0000000000000000
[ 1079.587653][T13352] page dumped because: kasan: bad access detected
[ 1079.594078][T13352] 
[ 1079.596421][T13352] Memory state around the buggy address:
[ 1079.602025][T13352]  ffff8880a7e5ec80: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb
[ 1079.610059][T13352]  ffff8880a7e5ed00: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc
[ 1079.618093][T13352] >ffff8880a7e5ed80: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb
[ 1079.626131][T13352]                                   ^
[ 1079.631485][T13352]  ffff8880a7e5ee00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
[ 1079.639528][T13352]  ffff8880a7e5ee80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00
[ 1079.647561][T13352] ==================================================================
[ 1079.655592][T13352] Disabling lock debugging due to kernel taint
[ 1079.668158][T13352] Kernel panic - not syncing: panic_on_warn set ...
[ 1079.674765][T13352] CPU: 1 PID: 13352 Comm: syz-executor.0 Tainted: G    B             5.9.0-rc1-syzkaller #0
[ 1079.684811][T13352] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1079.694849][T13352] Call Trace:
[ 1079.698123][T13352]  dump_stack+0x18f/0x20d
[ 1079.702428][T13352]  ? do_madvise.part.0+0x1c50/0x1cf0
[ 1079.707684][T13352]  panic+0x2e3/0x75c
[ 1079.711553][T13352]  ? __warn_printk+0xf3/0xf3
[ 1079.716119][T13352]  ? preempt_schedule_common+0x59/0xc0
[ 1079.721550][T13352]  ? do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.726897][T13352]  ? preempt_schedule_thunk+0x16/0x18
[ 1079.732280][T13352]  ? trace_hardirqs_on+0x55/0x220
[ 1079.737280][T13352]  ? do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.742546][T13352]  ? do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.747804][T13352]  end_report+0x4d/0x53
[ 1079.751933][T13352]  kasan_report.cold+0xd/0x37
[ 1079.756585][T13352]  ? do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.761843][T13352]  do_madvise.part.0+0x1c8b/0x1cf0
[ 1079.766930][T13352]  ? _copy_to_user+0x126/0x160
[ 1079.771665][T13352]  ? swapin_walk_pmd_entry+0x7b0/0x7b0
[ 1079.777095][T13352]  ? put_timespec64+0xcb/0x120
[ 1079.781830][T13352]  ? ns_to_timespec64+0xc0/0xc0
[ 1079.786653][T13352]  ? lock_is_held_type+0xbb/0xf0
[ 1079.791587][T13352]  ? lock_is_held_type+0xbb/0xf0
[ 1079.796503][T13352]  ? syscall_enter_from_user_mode+0x20/0x290
[ 1079.802465][T13352]  ? lockdep_hardirqs_on_prepare+0x354/0x530
[ 1079.808419][T13352]  __x64_sys_madvise+0xd9/0x110
[ 1079.813243][T13352]  do_syscall_64+0x2d/0x70
[ 1079.817655][T13352]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1079.823535][T13352] RIP: 0033:0x45d4d9
[ 1079.827408][T13352] Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
[ 1079.846988][T13352] RSP: 002b:00007f775f6bac78 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
[ 1079.855374][T13352] RAX: ffffffffffffffda RBX: 0000000000020800 RCX: 000000000045d4d9
[ 1079.863319][T13352] RDX: 0000000000000003 RSI: 0000000000600003 RDI: 0000000020000000
[ 1079.871272][T13352] RBP: 000000000118d020 R08: 0000000000000000 R09: 0000000000000000
[ 1079.879240][T13352] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cfec
[ 1079.887186][T13352] R13: 00007ffc20ee540f R14: 00007f775f6bb9c0 R15: 000000000118cfec
[ 1079.896432][T13352] Kernel Offset: disabled
[ 1079.900744][T13352] Rebooting in 86400 seconds..