DUID 00:04:1b:66:36:25:cc:bb:2d:eb:42:73:ce:96:f3:b7:d0:c0
forked to background, child pid 3181
[   31.395318][ T3182] 8021q: adding VLAN 0 to HW filter on device bond0
[   31.409198][ T3182] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK

syzkaller
Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts.
2021/12/26 09:38:15 fuzzer started
2021/12/26 09:38:15 connecting to host at 10.128.0.169:42723
2021/12/26 09:38:15 checking machine...
2021/12/26 09:38:15 checking revisions...
2021/12/26 09:38:15 testing simple program...
syzkaller login: [   49.379806][ T3609] cgroup: Unknown subsys name 'net'
[   49.489887][ T3609] cgroup: Unknown subsys name 'rlimit'
[   50.838559][ T3611] chnl_net:caif_netlink_parms(): no params data found
[   50.883246][ T3611] bridge0: port 1(bridge_slave_0) entered blocking state
[   50.891145][ T3611] bridge0: port 1(bridge_slave_0) entered disabled state
[   50.899414][ T3611] device bridge_slave_0 entered promiscuous mode
[   50.909087][ T3611] bridge0: port 2(bridge_slave_1) entered blocking state
[   50.916552][ T3611] bridge0: port 2(bridge_slave_1) entered disabled state
[   50.925097][ T3611] device bridge_slave_1 entered promiscuous mode
[   50.945134][ T3611] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[   50.956789][ T3611] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[   50.981016][ T3611] team0: Port device team_slave_0 added
[   50.989480][ T3611] team0: Port device team_slave_1 added
[   51.015660][ T3611] batman_adv: batadv0: Adding interface: batadv_slave_0
[   51.023226][ T3611] 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.
[   51.049995][ T3611] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[   51.064238][ T3611] batman_adv: batadv0: Adding interface: batadv_slave_1
[   51.071196][ T3611] 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.
[   51.098032][ T3611] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[   51.135561][ T3611] device hsr_slave_0 entered promiscuous mode
[   51.144765][ T3611] device hsr_slave_1 entered promiscuous mode
[   51.226889][ T3611] netdevsim netdevsim0 netdevsim0: renamed from eth0
[   51.237817][ T3611] netdevsim netdevsim0 netdevsim1: renamed from eth1
[   51.246606][ T3611] netdevsim netdevsim0 netdevsim2: renamed from eth2
[   51.256408][ T3611] netdevsim netdevsim0 netdevsim3: renamed from eth3
[   51.278205][ T3611] bridge0: port 2(bridge_slave_1) entered blocking state
[   51.285409][ T3611] bridge0: port 2(bridge_slave_1) entered forwarding state
[   51.293408][ T3611] bridge0: port 1(bridge_slave_0) entered blocking state
[   51.300503][ T3611] bridge0: port 1(bridge_slave_0) entered forwarding state
[   51.348311][ T3611] 8021q: adding VLAN 0 to HW filter on device bond0
[   51.361912][   T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[   51.372205][   T25] bridge0: port 1(bridge_slave_0) entered disabled state
[   51.381898][   T25] bridge0: port 2(bridge_slave_1) entered disabled state
[   51.390331][   T25] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[   51.404314][ T3611] 8021q: adding VLAN 0 to HW filter on device team0
[   51.416179][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[   51.425002][ T3620] bridge0: port 1(bridge_slave_0) entered blocking state
[   51.432357][ T3620] bridge0: port 1(bridge_slave_0) entered forwarding state
[   51.446642][   T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[   51.455090][   T25] bridge0: port 2(bridge_slave_1) entered blocking state
[   51.462130][   T25] bridge0: port 2(bridge_slave_1) entered forwarding state
[   51.480812][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[   51.490657][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[   51.506652][   T25] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[   51.515454][   T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[   51.528428][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[   51.538461][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[   51.554083][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[   51.561620][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[   51.574621][ T3611] 8021q: adding VLAN 0 to HW filter on device batadv0
[   51.592618][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[   51.613554][   T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[   51.621752][   T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[   51.629989][   T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[   51.638905][ T3611] device veth0_vlan entered promiscuous mode
[   51.651098][ T3611] device veth1_vlan entered promiscuous mode
[   51.670470][ T3611] device veth0_macvtap entered promiscuous mode
[   51.679566][  T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[   51.687931][  T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
[   51.696321][  T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[   51.705460][  T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[   51.716223][ T3611] device veth1_macvtap entered promiscuous mode
[   51.731936][ T3611] batman_adv: batadv0: Interface activated: batadv_slave_0
[   51.739443][ T3620] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[   51.752334][ T3611] batman_adv: batadv0: Interface activated: batadv_slave_1
[   51.761662][  T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[   51.773601][ T3611] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[   51.782466][ T3611] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   51.792177][ T3611] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[   51.801221][ T3611] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[   51.867987][  T974] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   51.888857][  T974] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   51.896899][    T8] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   51.899577][  T922] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   51.906335][    T8] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   51.922629][  T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
2021/12/26 09:38:18 building call list...
[   52.168373][    T8] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
executing program
[   54.091992][ T3600] can: request_module (can-proto-0) failed.
[   54.115251][ T3600] can: request_module (can-proto-0) failed.
[   54.136720][ T3600] can: request_module (can-proto-0) failed.
[   54.333314][ T3600] ------------[ cut here ]------------
[   54.339219][ T3600] refcount_t: decrement hit 0; leaking memory.
[   54.346649][ T3600] WARNING: CPU: 1 PID: 3600 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0
[   54.357346][ T3600] Modules linked in:
[   54.361244][ T3600] CPU: 1 PID: 3600 Comm: syz-fuzzer Not tainted 5.16.0-rc4-syzkaller #0
[   54.369687][ T3600] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.380145][ T3600] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0
[   54.386787][ T3600] Code: 1d d1 db a0 09 31 ff 89 de e8 5d 6a 9b fd 84 db 75 e0 e8 74 66 9b fd 48 c7 c7 e0 0a 05 8a c6 05 b1 db a0 09 01 e8 cc 4b 27 05 <0f> 0b eb c4 e8 58 66 9b fd 0f b6 1d a0 db a0 09 31 ff 89 de e8 28
[   54.406793][ T3600] RSP: 0018:ffffc90001a8fab0 EFLAGS: 00010286
[   54.413218][ T3600] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   54.421197][ T3600] RDX: ffff88801c13d700 RSI: ffffffff815f1e28 RDI: fffff52000351f48
[   54.429610][ T3600] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000001
[   54.438295][ T3600] R10: ffffffff815ebbce R11: 0000000000000000 R12: 1ffff92000351f5b
[   54.446421][ T3600] R13: 00000000ffffffef R14: ffffffff8d2fdf54 R15: ffffc90001a8fd10
[   54.454536][ T3600] FS:  0000000001870630(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
[   54.463816][ T3600] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.470435][ T3600] CR2: 00007f09fe872300 CR3: 0000000077303000 CR4: 00000000003506e0
[   54.479546][ T3600] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   54.488100][ T3600] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   54.496160][ T3600] Call Trace:
[   54.499444][ T3600]  <TASK>
[   54.502386][ T3600]  ref_tracker_free+0x4fe/0x610
[   54.507454][ T3600]  ? ref_tracker_dir_exit+0x330/0x330
[   54.512922][ T3600]  ? bpf_sk_storage_free+0x333/0x3e0
[   54.518237][ T3600]  ? lock_downgrade+0x6e0/0x6e0
[   54.523123][ T3600]  ? kfree+0x1e1/0x560
[   54.527217][ T3600]  __sk_destruct+0x4a6/0x920
[   54.531914][ T3600]  sk_destruct+0xbd/0xe0
[   54.536249][ T3600]  __sk_free+0xef/0x3d0
[   54.540596][ T3600]  sk_free+0x78/0xa0
[   54.544557][ T3600]  __mptcp_close_ssk+0x435/0x590
[   54.549698][ T3600]  __mptcp_destroy_sock+0x35f/0x830
[   54.554988][ T3600]  ? __mptcp_close_ssk+0x590/0x590
[   54.560121][ T3600]  ? __local_bh_enable_ip+0xa0/0x120
[   54.565493][ T3600]  mptcp_close+0x5f8/0x7f0
[   54.570009][ T3600]  inet_release+0x12e/0x280
[   54.574618][ T3600]  inet6_release+0x4c/0x70
[   54.579098][ T3600]  __sock_release+0xcd/0x280
[   54.584082][ T3600]  sock_close+0x18/0x20
[   54.588247][ T3600]  __fput+0x286/0x9f0
[   54.592240][ T3600]  ? __sock_release+0x280/0x280
[   54.597332][ T3600]  task_work_run+0xdd/0x1a0
[   54.601864][ T3600]  exit_to_user_mode_prepare+0x27e/0x290
[   54.607660][ T3600]  syscall_exit_to_user_mode+0x19/0x60
[   54.613205][ T3600]  do_syscall_64+0x42/0xb0
[   54.618012][ T3600]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   54.623965][ T3600] RIP: 0033:0x4b12db
[   54.627867][ T3600] Code: fb ff eb bd e8 46 96 fb ff e9 61 ff ff ff cc e8 fb 61 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
[   54.647916][ T3600] RSP: 002b:000000c00048d4f0 EFLAGS: 00000206 ORIG_RAX: 0000000000000003
[   54.656827][ T3600] RAX: 0000000000000000 RBX: 000000c00001e000 RCX: 00000000004b12db
[   54.664879][ T3600] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
[   54.672912][ T3600] RBP: 000000c00048d530 R08: 0000000000f0e801 R09: 00007ffc36ff0080
[   54.680984][ T3600] R10: 00007ffc36ff0090 R11: 0000000000000206 R12: 000000000000000c
[   54.689144][ T3600] R13: 0000000000000000 R14: ffffffffffffffff R15: 000000c0004bbea0
[   54.697245][ T3600]  </TASK>
[   54.700435][ T3600] Kernel panic - not syncing: panic_on_warn set ...
[   54.707096][ T3600] CPU: 1 PID: 3600 Comm: syz-fuzzer Not tainted 5.16.0-rc4-syzkaller #0
[   54.715412][ T3600] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.725451][ T3600] Call Trace:
[   54.728719][ T3600]  <TASK>
[   54.731635][ T3600]  dump_stack_lvl+0xcd/0x134
[   54.736220][ T3600]  panic+0x2b0/0x6dd
[   54.740106][ T3600]  ? __warn_printk+0xf3/0xf3
[   54.744692][ T3600]  ? __warn.cold+0x1a/0x44
[   54.749103][ T3600]  ? refcount_warn_saturate+0xbf/0x1e0
[   54.754643][ T3600]  __warn.cold+0x35/0x44
[   54.758877][ T3600]  ? wake_up_klogd.part.0+0x8e/0xd0
[   54.764067][ T3600]  ? refcount_warn_saturate+0xbf/0x1e0
[   54.769550][ T3600]  report_bug+0x1bd/0x210
[   54.774412][ T3600]  handle_bug+0x3c/0x60
[   54.778555][ T3600]  exc_invalid_op+0x14/0x40
[   54.783055][ T3600]  asm_exc_invalid_op+0x12/0x20
[   54.787899][ T3600] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0
[   54.793952][ T3600] Code: 1d d1 db a0 09 31 ff 89 de e8 5d 6a 9b fd 84 db 75 e0 e8 74 66 9b fd 48 c7 c7 e0 0a 05 8a c6 05 b1 db a0 09 01 e8 cc 4b 27 05 <0f> 0b eb c4 e8 58 66 9b fd 0f b6 1d a0 db a0 09 31 ff 89 de e8 28
[   54.813821][ T3600] RSP: 0018:ffffc90001a8fab0 EFLAGS: 00010286
[   54.819892][ T3600] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   54.827868][ T3600] RDX: ffff88801c13d700 RSI: ffffffff815f1e28 RDI: fffff52000351f48
[   54.835845][ T3600] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000001
[   54.843945][ T3600] R10: ffffffff815ebbce R11: 0000000000000000 R12: 1ffff92000351f5b
[   54.852023][ T3600] R13: 00000000ffffffef R14: ffffffff8d2fdf54 R15: ffffc90001a8fd10
[   54.860276][ T3600]  ? wake_up_klogd.part.0+0x8e/0xd0
[   54.865492][ T3600]  ? vprintk+0x88/0x90
[   54.869604][ T3600]  ref_tracker_free+0x4fe/0x610
[   54.874546][ T3600]  ? ref_tracker_dir_exit+0x330/0x330
[   54.879916][ T3600]  ? bpf_sk_storage_free+0x333/0x3e0
[   54.885203][ T3600]  ? lock_downgrade+0x6e0/0x6e0
[   54.890051][ T3600]  ? kfree+0x1e1/0x560
[   54.894131][ T3600]  __sk_destruct+0x4a6/0x920
[   54.898732][ T3600]  sk_destruct+0xbd/0xe0
[   54.902975][ T3600]  __sk_free+0xef/0x3d0
[   54.907310][ T3600]  sk_free+0x78/0xa0
[   54.911204][ T3600]  __mptcp_close_ssk+0x435/0x590
[   54.916415][ T3600]  __mptcp_destroy_sock+0x35f/0x830
[   54.921612][ T3600]  ? __mptcp_close_ssk+0x590/0x590
[   54.926720][ T3600]  ? __local_bh_enable_ip+0xa0/0x120
[   54.932184][ T3600]  mptcp_close+0x5f8/0x7f0
[   54.936787][ T3600]  inet_release+0x12e/0x280
[   54.941349][ T3600]  inet6_release+0x4c/0x70
[   54.945767][ T3600]  __sock_release+0xcd/0x280
[   54.950368][ T3600]  sock_close+0x18/0x20
[   54.954525][ T3600]  __fput+0x286/0x9f0
[   54.958609][ T3600]  ? __sock_release+0x280/0x280
[   54.963459][ T3600]  task_work_run+0xdd/0x1a0
[   54.967963][ T3600]  exit_to_user_mode_prepare+0x27e/0x290
[   54.973596][ T3600]  syscall_exit_to_user_mode+0x19/0x60
[   54.979280][ T3600]  do_syscall_64+0x42/0xb0
[   54.983801][ T3600]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   54.989698][ T3600] RIP: 0033:0x4b12db
[   54.993595][ T3600] Code: fb ff eb bd e8 46 96 fb ff e9 61 ff ff ff cc e8 fb 61 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
[   55.013200][ T3600] RSP: 002b:000000c00048d4f0 EFLAGS: 00000206 ORIG_RAX: 0000000000000003
[   55.021613][ T3600] RAX: 0000000000000000 RBX: 000000c00001e000 RCX: 00000000004b12db
[   55.029575][ T3600] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
[   55.037541][ T3600] RBP: 000000c00048d530 R08: 0000000000f0e801 R09: 00007ffc36ff0080
[   55.045596][ T3600] R10: 00007ffc36ff0090 R11: 0000000000000206 R12: 000000000000000c
[   55.053646][ T3600] R13: 0000000000000000 R14: ffffffffffffffff R15: 000000c0004bbea0
[   55.062251][ T3600]  </TASK>
[   55.065515][ T3600] Kernel Offset: disabled
[   55.070338][ T3600] Rebooting in 86400 seconds..