Warning: Permanently added '10.128.10.39' (ECDSA) to the list of known hosts. syzkaller login: [ 87.431984][ T9519] IPVS: ftp: loaded support on port[0] = 21 [ 87.485780][ T9519] chnl_net:caif_netlink_parms(): no params data found [ 87.539046][ T9519] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.546643][ T9519] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.554744][ T9519] device bridge_slave_0 entered promiscuous mode [ 87.563913][ T9519] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.571170][ T9519] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.579324][ T9519] device bridge_slave_1 entered promiscuous mode [ 87.597892][ T9519] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 87.609368][ T9519] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 87.629261][ T9519] team0: Port device team_slave_0 added [ 87.637784][ T9519] team0: Port device team_slave_1 added [ 87.653948][ T9519] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 87.660983][ T9519] 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. [ 87.688490][ T9519] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 87.701198][ T9519] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 87.708189][ T9519] 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. [ 87.734122][ T9519] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 87.810135][ T9519] device hsr_slave_0 entered promiscuous mode [ 87.848625][ T9519] device hsr_slave_1 entered promiscuous mode [ 87.985492][ T9519] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 88.041104][ T9519] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.100928][ T9519] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.140371][ T9519] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.215019][ T9519] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.222279][ T9519] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.230254][ T9519] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.237312][ T9519] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.281922][ T9519] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.294832][ T2924] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.304780][ T2924] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.313203][ T2924] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.321411][ T2924] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 88.334262][ T9519] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.345867][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 88.354949][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.362076][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.374507][ T2924] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 88.383329][ T2924] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.390472][ T2924] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.410276][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 88.420844][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 88.429983][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 88.443075][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 88.454488][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 88.466319][ T9519] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 88.486605][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 88.494623][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 88.507201][ T9519] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 88.526242][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 88.535423][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 88.555638][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 88.564441][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 88.574078][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 88.582014][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 88.596877][ T9519] device veth0_vlan entered promiscuous mode [ 88.609323][ T9519] device veth1_vlan entered promiscuous mode [ 88.630108][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 88.639541][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 88.647573][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 88.656595][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 88.667311][ T9519] device veth0_macvtap entered promiscuous mode [ 88.678410][ T9519] device veth1_macvtap entered promiscuous mode [ 88.694992][ T9519] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 88.702896][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 88.711355][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 88.720853][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 88.730875][ T2922] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 88.744154][ T9519] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 88.751566][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 88.761086][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 89.013497][ T9524] [ 89.015850][ T9524] ============================================ [ 89.021987][ T9524] WARNING: possible recursive locking detected [ 89.028125][ T9524] 5.6.0-rc3-syzkaller #0 Not tainted [ 89.033584][ T9524] -------------------------------------------- [ 89.039725][ T9524] syz-executor598/9524 is trying to acquire lock: [ 89.046182][ T9524] ffff88808b5b8b90 (sk_lock-AF_INET6){+.+.}, at: inet_csk_accept+0x69f/0xd30 [ 89.055420][ T9524] [ 89.055420][ T9524] but task is already holding lock: [ 89.062772][ T9524] ffff88808b5b9590 (sk_lock-AF_INET6){+.+.}, at: inet_csk_accept+0x8d/0xd30 [ 89.071482][ T9524] [ 89.071482][ T9524] other info that might help us debug this: [ 89.079635][ T9524] Possible unsafe locking scenario: [ 89.079635][ T9524] [ 89.087085][ T9524] CPU0 [ 89.090351][ T9524] ---- [ 89.093618][ T9524] lock(sk_lock-AF_INET6); [ 89.098136][ T9524] lock(sk_lock-AF_INET6); [ 89.102623][ T9524] [ 89.102623][ T9524] *** DEADLOCK *** [ 89.102623][ T9524] [ 89.110752][ T9524] May be due to missing lock nesting notation [ 89.110752][ T9524] [ 89.119065][ T9524] 1 lock held by syz-executor598/9524: [ 89.124501][ T9524] #0: ffff88808b5b9590 (sk_lock-AF_INET6){+.+.}, at: inet_csk_accept+0x8d/0xd30 [ 89.133606][ T9524] [ 89.133606][ T9524] stack backtrace: [ 89.139538][ T9524] CPU: 0 PID: 9524 Comm: syz-executor598 Not tainted 5.6.0-rc3-syzkaller #0 [ 89.148194][ T9524] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.158290][ T9524] Call Trace: [ 89.161578][ T9524] dump_stack+0x188/0x20d [ 89.165901][ T9524] __lock_acquire.cold+0x114/0x288 [ 89.171348][ T9524] ? find_held_lock+0x2d/0x110 [ 89.176101][ T9524] ? mark_held_locks+0xe0/0xe0 [ 89.180845][ T9524] ? inet_csk_accept+0x4e5/0xd30 [ 89.185761][ T9524] lock_acquire+0x197/0x420 [ 89.190241][ T9524] ? inet_csk_accept+0x69f/0xd30 [ 89.195157][ T9524] lock_sock_nested+0xc5/0x110 [ 89.199898][ T9524] ? inet_csk_accept+0x69f/0xd30 [ 89.204815][ T9524] inet_csk_accept+0x69f/0xd30 [ 89.209561][ T9524] ? percpu_counter_add_batch+0x123/0x180 [ 89.215261][ T9524] ? inet_csk_listen_stop+0xb20/0xb20 [ 89.220610][ T9524] ? aa_label_sk_perm+0x89/0xe0 [ 89.225438][ T9524] ? aa_sk_perm+0x319/0xab0 [ 89.229918][ T9524] inet_accept+0xe9/0x7c0 [ 89.234241][ T9524] ? ipv4_mib_exit_net+0x180/0x180 [ 89.239432][ T9524] ? __alloc_fd+0x46d/0x600 [ 89.243913][ T9524] ? ipv4_mib_exit_net+0x180/0x180 [ 89.249016][ T9524] __sys_accept4_file+0x3ac/0x5b0 [ 89.254366][ T9524] ? __ia32_sys_listen+0x70/0x70 [ 89.259289][ T9524] ? __sys_connect+0x109/0x190 [ 89.264045][ T9524] ? __sys_connect_file+0x190/0x190 [ 89.269242][ T9524] ? __fd_install+0x1e6/0x600 [ 89.273911][ T9524] ? __sys_socket+0x16d/0x200 [ 89.278585][ T9524] ? move_addr_to_kernel+0x70/0x70 [ 89.283679][ T9524] __sys_accept4+0x53/0x90 [ 89.288076][ T9524] __x64_sys_accept4+0x93/0xf0 [ 89.292824][ T9524] ? lockdep_hardirqs_on+0x417/0x5d0 [ 89.298117][ T9524] do_syscall_64+0xf6/0x790 [ 89.302784][ T9524] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.308657][ T9524] RIP: 0033:0x4445c9 [ 89.312532][ T9524] Code: e8 0c 0d 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 89.332119][ T9524] RSP: 002b:00007ffc35b37608 EFLAGS: 00000246 ORIG_RAX: 0000000000000120 [ 89.340513][ T9524] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004445c9 [ 89.348466][ T9524] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 89.356418][ T9524] RBP: 0000000000000000 R08: 0000000000306777 R09: 0000000000306777 executing program executing program executing program executing program executing program [ 89.364374][ T9524] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 89.372353][ T9524] R13: 00000000004053d0 R14: 0000000000000000 R15: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program