DUID 00:04:44:5a:cc:c9:49:7a:03:7b:0e:36:9f:1a:c7:8d:92:7d forked to background, child pid 3183 [ 32.612639][ T3184] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.629584][ T3184] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.9' (ECDSA) to the list of known hosts. 2021/12/15 03:10:56 fuzzer started 2021/12/15 03:10:56 connecting to host at 10.128.0.169:45157 2021/12/15 03:10:56 checking machine... 2021/12/15 03:10:56 checking revisions... 2021/12/15 03:10:56 testing simple program... syzkaller login: [ 50.104922][ T3605] cgroup: Unknown subsys name 'net' [ 50.207711][ T3605] cgroup: Unknown subsys name 'rlimit' [ 51.596397][ T3607] chnl_net:caif_netlink_parms(): no params data found [ 51.643982][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.652536][ T3607] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.660804][ T3607] device bridge_slave_0 entered promiscuous mode [ 51.671772][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.679665][ T3607] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.688000][ T3607] device bridge_slave_1 entered promiscuous mode [ 51.708661][ T3607] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.722210][ T3607] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.745727][ T3607] team0: Port device team_slave_0 added [ 51.753298][ T3607] team0: Port device team_slave_1 added [ 51.772404][ T3607] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.779713][ T3607] 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. [ 51.806052][ T3607] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.819456][ T3607] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.826474][ T3607] 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. [ 51.853114][ T3607] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.882381][ T3607] device hsr_slave_0 entered promiscuous mode [ 51.889621][ T3607] device hsr_slave_1 entered promiscuous mode [ 51.976952][ T3607] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.988811][ T3607] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.998953][ T3607] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.008909][ T3607] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.031450][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.038748][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.046565][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.054028][ T3607] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.103074][ T3607] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.116932][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.127319][ T34] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.136817][ T34] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.146394][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.159610][ T3607] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.172477][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.181344][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.188527][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.201055][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.210447][ T3617] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.217670][ T3617] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.239588][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.248459][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.262198][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.270393][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.282427][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.293401][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.314384][ T3607] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.322970][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.330595][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.349504][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.368574][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.377184][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.386531][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.397257][ T3607] device veth0_vlan entered promiscuous mode [ 52.409503][ T3607] device veth1_vlan entered promiscuous mode [ 52.429998][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.439172][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.448226][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.458788][ T3607] device veth0_macvtap entered promiscuous mode [ 52.468483][ T3607] device veth1_macvtap entered promiscuous mode [ 52.485936][ T3607] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.494161][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.504055][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.516832][ T3607] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.525048][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.537225][ T3607] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.548401][ T3607] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.557133][ T3607] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.566865][ T3607] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.631711][ T44] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.649450][ T44] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.660226][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 52.671003][ T10] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.681161][ T10] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.691745][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/12/15 03:10:59 building call list... executing program [ 52.974190][ T44] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 54.835570][ T3599] can: request_module (can-proto-0) failed. [ 54.859257][ T3599] can: request_module (can-proto-0) failed. [ 54.880637][ T3599] can: request_module (can-proto-0) failed. [ 55.093534][ T3599] ------------[ cut here ]------------ [ 55.099515][ T3599] refcount_t: decrement hit 0; leaking memory. [ 55.105960][ T3599] WARNING: CPU: 0 PID: 3599 at lib/refcount.c:31 refcount_warn_saturate+0xbf/0x1e0 [ 55.115642][ T3599] Modules linked in: [ 55.119805][ T3599] CPU: 1 PID: 3599 Comm: syz-fuzzer Not tainted 5.16.0-rc4-syzkaller #0 [ 55.128745][ T3599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.139197][ T3599] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 [ 55.145308][ T3599] Code: 1d d1 9f a1 09 31 ff 89 de e8 cd 42 9c fd 84 db 75 e0 e8 e4 3e 9c fd 48 c7 c7 60 fa 04 8a c6 05 b1 9f a1 09 01 e8 ac 44 27 05 <0f> 0b eb c4 e8 c8 3e 9c fd 0f b6 1d a0 9f a1 09 31 ff 89 de e8 98 [ 55.165833][ T3599] RSP: 0018:ffffc90001adfab0 EFLAGS: 00010286 [ 55.172457][ T3599] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 55.180592][ T3599] RDX: ffff888022e63a00 RSI: ffffffff815f1db8 RDI: fffff5200035bf48 [ 55.188753][ T3599] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 55.196874][ T3599] R10: ffffffff815ebb5e R11: 0000000000000000 R12: 1ffff9200035bf5b [ 55.205094][ T3599] R13: 00000000ffffffef R14: ffffffff8d2fcb14 R15: ffffc90001adfd10 [ 55.213388][ T3599] FS: 000000c00002e890(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 55.222656][ T3599] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.229413][ T3599] CR2: 00007f2b9bbdd300 CR3: 0000000018f99000 CR4: 00000000003506f0 [ 55.237846][ T3599] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.245843][ T3599] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.254060][ T3599] Call Trace: [ 55.257570][ T3599] <TASK> [ 55.260525][ T3599] ref_tracker_free+0x4fe/0x610 [ 55.265418][ T3599] ? ref_tracker_dir_exit+0x330/0x330 [ 55.271920][ T3599] ? bpf_sk_storage_free+0x333/0x3e0 [ 55.277249][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 55.282293][ T3599] ? kfree+0x1e1/0x560 [ 55.286809][ T3599] __sk_destruct+0x4a6/0x920 [ 55.291906][ T3599] sk_destruct+0xbd/0xe0 [ 55.296365][ T3599] __sk_free+0xef/0x3d0 [ 55.301470][ T3599] sk_free+0x78/0xa0 [ 55.305494][ T3599] __mptcp_close_ssk+0x435/0x590 [ 55.311854][ T3599] __mptcp_destroy_sock+0x35f/0x830 [ 55.317226][ T3599] ? __mptcp_close_ssk+0x590/0x590 [ 55.322819][ T3599] ? __local_bh_enable_ip+0xa0/0x120 [ 55.328423][ T3599] mptcp_close+0x5f8/0x7f0 [ 55.332872][ T3599] inet_release+0x12e/0x280 [ 55.337877][ T3599] inet6_release+0x4c/0x70 [ 55.342495][ T3599] __sock_release+0xcd/0x280 [ 55.347279][ T3599] sock_close+0x18/0x20 [ 55.351823][ T3599] __fput+0x286/0x9f0 [ 55.355841][ T3599] ? __sock_release+0x280/0x280 [ 55.360825][ T3599] task_work_run+0xdd/0x1a0 [ 55.365465][ T3599] exit_to_user_mode_prepare+0x27e/0x290 [ 55.371252][ T3599] syscall_exit_to_user_mode+0x19/0x60 [ 55.376747][ T3599] do_syscall_64+0x42/0xb0 [ 55.382039][ T3599] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.388255][ T3599] RIP: 0033:0x4b12db [ 55.392439][ T3599] 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 [ 55.412432][ T3599] RSP: 002b:000000c0002f74f0 EFLAGS: 00000206 ORIG_RAX: 0000000000000003 [ 55.422249][ T3599] RAX: 0000000000000000 RBX: 000000c00001e800 RCX: 00000000004b12db [ 55.430832][ T3599] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 [ 55.439043][ T3599] RBP: 000000c0002f7530 R08: 0000000000f0ae01 R09: 0000000000000000 [ 55.447059][ T3599] R10: ffffffffffffffff R11: 0000000000000206 R12: 000000000000000e [ 55.455291][ T3599] R13: 0000000000000000 R14: ffffffffffffffff R15: 000000c000512280 [ 55.464224][ T3599] </TASK> [ 55.467259][ T3599] Kernel panic - not syncing: panic_on_warn set ... [ 55.473989][ T3599] CPU: 0 PID: 3599 Comm: syz-fuzzer Not tainted 5.16.0-rc4-syzkaller #0 [ 55.482311][ T3599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.492494][ T3599] Call Trace: [ 55.495807][ T3599] <TASK> [ 55.498740][ T3599] dump_stack_lvl+0xcd/0x134 [ 55.503338][ T3599] panic+0x2b0/0x6dd [ 55.507245][ T3599] ? __warn_printk+0xf3/0xf3 [ 55.511849][ T3599] ? __warn.cold+0x1a/0x44 [ 55.516374][ T3599] ? refcount_warn_saturate+0xbf/0x1e0 [ 55.522065][ T3599] __warn.cold+0x35/0x44 [ 55.526591][ T3599] ? wake_up_klogd.part.0+0x8e/0xd0 [ 55.531807][ T3599] ? refcount_warn_saturate+0xbf/0x1e0 [ 55.537282][ T3599] report_bug+0x1bd/0x210 [ 55.541839][ T3599] handle_bug+0x3c/0x60 [ 55.546516][ T3599] exc_invalid_op+0x14/0x40 [ 55.551222][ T3599] asm_exc_invalid_op+0x12/0x20 [ 55.556282][ T3599] RIP: 0010:refcount_warn_saturate+0xbf/0x1e0 [ 55.562457][ T3599] Code: 1d d1 9f a1 09 31 ff 89 de e8 cd 42 9c fd 84 db 75 e0 e8 e4 3e 9c fd 48 c7 c7 60 fa 04 8a c6 05 b1 9f a1 09 01 e8 ac 44 27 05 <0f> 0b eb c4 e8 c8 3e 9c fd 0f b6 1d a0 9f a1 09 31 ff 89 de e8 98 [ 55.582486][ T3599] RSP: 0018:ffffc90001adfab0 EFLAGS: 00010286 [ 55.588549][ T3599] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 55.596513][ T3599] RDX: ffff888022e63a00 RSI: ffffffff815f1db8 RDI: fffff5200035bf48 [ 55.604488][ T3599] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 55.612452][ T3599] R10: ffffffff815ebb5e R11: 0000000000000000 R12: 1ffff9200035bf5b [ 55.620418][ T3599] R13: 00000000ffffffef R14: ffffffff8d2fcb14 R15: ffffc90001adfd10 [ 55.628389][ T3599] ? wake_up_klogd.part.0+0x8e/0xd0 [ 55.633798][ T3599] ? vprintk+0x88/0x90 [ 55.637947][ T3599] ref_tracker_free+0x4fe/0x610 [ 55.642801][ T3599] ? ref_tracker_dir_exit+0x330/0x330 [ 55.648242][ T3599] ? bpf_sk_storage_free+0x333/0x3e0 [ 55.653600][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 55.658455][ T3599] ? kfree+0x1e1/0x560 [ 55.662697][ T3599] __sk_destruct+0x4a6/0x920 [ 55.667322][ T3599] sk_destruct+0xbd/0xe0 [ 55.671614][ T3599] __sk_free+0xef/0x3d0 [ 55.675907][ T3599] sk_free+0x78/0xa0 [ 55.679815][ T3599] __mptcp_close_ssk+0x435/0x590 [ 55.685132][ T3599] __mptcp_destroy_sock+0x35f/0x830 [ 55.690349][ T3599] ? __mptcp_close_ssk+0x590/0x590 [ 55.695484][ T3599] ? __local_bh_enable_ip+0xa0/0x120 [ 55.700815][ T3599] mptcp_close+0x5f8/0x7f0 [ 55.705251][ T3599] inet_release+0x12e/0x280 [ 55.710220][ T3599] inet6_release+0x4c/0x70 [ 55.714743][ T3599] __sock_release+0xcd/0x280 [ 55.719353][ T3599] sock_close+0x18/0x20 [ 55.723731][ T3599] __fput+0x286/0x9f0 [ 55.727712][ T3599] ? __sock_release+0x280/0x280 [ 55.732703][ T3599] task_work_run+0xdd/0x1a0 [ 55.737651][ T3599] exit_to_user_mode_prepare+0x27e/0x290 [ 55.743304][ T3599] syscall_exit_to_user_mode+0x19/0x60 [ 55.748772][ T3599] do_syscall_64+0x42/0xb0 [ 55.753552][ T3599] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 55.759450][ T3599] RIP: 0033:0x4b12db [ 55.763356][ T3599] 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 [ 55.782967][ T3599] RSP: 002b:000000c0002f74f0 EFLAGS: 00000206 ORIG_RAX: 0000000000000003 [ 55.791397][ T3599] RAX: 0000000000000000 RBX: 000000c00001e800 RCX: 00000000004b12db [ 55.799371][ T3599] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 [ 55.807343][ T3599] RBP: 000000c0002f7530 R08: 0000000000f0ae01 R09: 0000000000000000 [ 55.815336][ T3599] R10: ffffffffffffffff R11: 0000000000000206 R12: 000000000000000e [ 55.823470][ T3599] R13: 0000000000000000 R14: ffffffffffffffff R15: 000000c000512280 [ 55.831496][ T3599] </TASK> [ 55.834974][ T3599] Kernel Offset: disabled [ 55.839410][ T3599] Rebooting in 86400 seconds..