Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. syzkaller login: [ 74.108861][ T8441] chnl_net:caif_netlink_parms(): no params data found [ 74.175968][ T8441] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.184612][ T8441] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.194138][ T8441] device bridge_slave_0 entered promiscuous mode [ 74.203610][ T8441] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.211973][ T8441] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.220704][ T8441] device bridge_slave_1 entered promiscuous mode [ 74.251161][ T8441] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.262882][ T8441] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.296279][ T8441] team0: Port device team_slave_0 added [ 74.304263][ T8441] team0: Port device team_slave_1 added [ 74.333665][ T8441] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.341411][ T8441] 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. [ 74.368084][ T8441] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.381366][ T8441] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.389260][ T8441] 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. [ 74.415573][ T8441] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.453066][ T8441] device hsr_slave_0 entered promiscuous mode [ 74.459750][ T8441] device hsr_slave_1 entered promiscuous mode [ 74.583442][ T8441] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.594558][ T8441] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.604369][ T8441] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.614995][ T8441] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.641121][ T8441] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.648539][ T8441] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.656208][ T8441] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.663338][ T8441] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.707036][ T8441] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.721358][ T4855] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.733220][ T4855] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.742066][ T4855] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.751236][ T4855] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 74.765579][ T8441] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.776912][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.785816][ T4887] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.792918][ T4887] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.811931][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.820354][ T4887] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.827400][ T4887] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.841274][ T8759] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.851616][ T8759] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.869199][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.877744][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.886889][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.899169][ T8441] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.918869][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.926309][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.937848][ T8441] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.957315][ T8759] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.979261][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.987584][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.996135][ T4887] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.005401][ T8441] device veth0_vlan entered promiscuous mode [ 75.019074][ T8441] device veth1_vlan entered promiscuous mode [ 75.041022][ T8759] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.050121][ T8759] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.058078][ T8759] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.070900][ T8441] device veth0_macvtap entered promiscuous mode [ 75.080473][ T8759] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.090280][ T8441] device veth1_macvtap entered promiscuous mode [ 75.110157][ T8441] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.117567][ T8759] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.127823][ T8759] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.141582][ T8441] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.151069][ T4855] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.159904][ T4855] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.171434][ T8441] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.181028][ T8441] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 75.190043][ T8441] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.199562][ T8441] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.247926][ T8441] [ 75.250285][ T8441] ====================================================== [ 75.257281][ T8441] WARNING: possible circular locking dependency detected [ 75.264287][ T8441] 5.14.0-rc2-syzkaller #0 Not tainted [ 75.269666][ T8441] ------------------------------------------------------ [ 75.276656][ T8441] syz-executor917/8441 is trying to acquire lock: [ 75.283058][ T8441] ffffffff8d0cb568 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0x11/0x50 [ 75.291683][ T8441] [ 75.291683][ T8441] but task is already holding lock: [ 75.299019][ T8441] ffffffff8d0a9608 (br_ioctl_mutex){+.+.}-{3:3}, at: br_ioctl_call+0x3b/0xa0 [ 75.307788][ T8441] [ 75.307788][ T8441] which lock already depends on the new lock. [ 75.307788][ T8441] [ 75.318168][ T8441] [ 75.318168][ T8441] the existing dependency chain (in reverse order) is: [ 75.327154][ T8441] [ 75.327154][ T8441] -> #1 (br_ioctl_mutex){+.+.}-{3:3}: [ 75.334698][ T8441] __mutex_lock+0x12a/0x10a0 [ 75.339822][ T8441] br_ioctl_call+0x3b/0xa0 [ 75.344754][ T8441] dev_ifsioc+0xc1f/0xf60 [ 75.349606][ T8441] dev_ioctl+0x1b9/0xee0 [ 75.354363][ T8441] sock_do_ioctl+0x18b/0x210 [ 75.359457][ T8441] sock_ioctl+0x2f1/0x640 [ 75.364290][ T8441] __x64_sys_ioctl+0x193/0x200 [ 75.369561][ T8441] do_syscall_64+0x35/0xb0 [ 75.374691][ T8441] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.381258][ T8441] [ 75.381258][ T8441] -> #0 (rtnl_mutex){+.+.}-{3:3}: [ 75.388439][ T8441] __lock_acquire+0x2a07/0x54a0 [ 75.393794][ T8441] lock_acquire+0x1ab/0x510 [ 75.398796][ T8441] __mutex_lock+0x12a/0x10a0 [ 75.403884][ T8441] register_netdev+0x11/0x50 [ 75.408986][ T8441] br_add_bridge+0x97/0xf0 [ 75.414011][ T8441] br_ioctl_stub+0x750/0x7f0 [ 75.419109][ T8441] br_ioctl_call+0x5e/0xa0 [ 75.424300][ T8441] sock_ioctl+0x30c/0x640 [ 75.429221][ T8441] __x64_sys_ioctl+0x193/0x200 [ 75.434496][ T8441] do_syscall_64+0x35/0xb0 [ 75.439425][ T8441] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.445943][ T8441] [ 75.445943][ T8441] other info that might help us debug this: [ 75.445943][ T8441] [ 75.456752][ T8441] Possible unsafe locking scenario: [ 75.456752][ T8441] [ 75.464184][ T8441] CPU0 CPU1 [ 75.469697][ T8441] ---- ---- [ 75.475044][ T8441] lock(br_ioctl_mutex); [ 75.479352][ T8441] lock(rtnl_mutex); [ 75.485836][ T8441] lock(br_ioctl_mutex); [ 75.492764][ T8441] lock(rtnl_mutex); [ 75.496866][ T8441] [ 75.496866][ T8441] *** DEADLOCK *** [ 75.496866][ T8441] [ 75.505003][ T8441] 1 lock held by syz-executor917/8441: [ 75.510440][ T8441] #0: ffffffff8d0a9608 (br_ioctl_mutex){+.+.}-{3:3}, at: br_ioctl_call+0x3b/0xa0 [ 75.519739][ T8441] [ 75.519739][ T8441] stack backtrace: [ 75.525608][ T8441] CPU: 0 PID: 8441 Comm: syz-executor917 Not tainted 5.14.0-rc2-syzkaller #0 [ 75.534344][ T8441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.544389][ T8441] Call Trace: [ 75.547654][ T8441] dump_stack_lvl+0xcd/0x134 [ 75.552331][ T8441] check_noncircular+0x25f/0x2e0 [ 75.557249][ T8441] ? print_circular_bug+0x1e0/0x1e0 [ 75.562427][ T8441] ? lockdep_lock+0xc6/0x200 [ 75.566999][ T8441] ? call_rcu_zapped+0xb0/0xb0 [ 75.571759][ T8441] ? mark_held_locks+0x9f/0xe0 [ 75.576504][ T8441] __lock_acquire+0x2a07/0x54a0 [ 75.581337][ T8441] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 75.587297][ T8441] ? kasan_save_stack+0x32/0x40 [ 75.592160][ T8441] ? kasan_save_stack+0x1b/0x40 [ 75.597009][ T8441] lock_acquire+0x1ab/0x510 [ 75.601517][ T8441] ? register_netdev+0x11/0x50 [ 75.606272][ T8441] ? lock_release+0x720/0x720 [ 75.610956][ T8441] __mutex_lock+0x12a/0x10a0 [ 75.615791][ T8441] ? register_netdev+0x11/0x50 [ 75.620548][ T8441] ? register_netdev+0x11/0x50 [ 75.625292][ T8441] ? mutex_lock_io_nested+0xf00/0xf00 [ 75.630646][ T8441] ? memset+0x20/0x40 [ 75.634624][ T8441] ? memcpy+0x39/0x60 [ 75.638671][ T8441] ? alloc_netdev_mqs+0xade/0xe80 [ 75.643717][ T8441] register_netdev+0x11/0x50 [ 75.648317][ T8441] br_add_bridge+0x97/0xf0 [ 75.652744][ T8441] br_ioctl_stub+0x750/0x7f0 [ 75.657320][ T8441] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 75.663204][ T8441] ? br_dev_siocdevprivate+0x15c0/0x15c0 [ 75.668934][ T8441] ? do_vfs_ioctl+0x132/0x15d0 [ 75.673695][ T8441] ? vfs_fileattr_set+0xb50/0xb50 [ 75.678715][ T8441] ? br_dev_siocdevprivate+0x15c0/0x15c0 [ 75.684338][ T8441] br_ioctl_call+0x5e/0xa0 [ 75.688750][ T8441] sock_ioctl+0x30c/0x640 [ 75.693063][ T8441] ? br_ioctl_call+0xa0/0xa0 [ 75.697642][ T8441] ? lock_downgrade+0x6e0/0x6e0 [ 75.702489][ T8441] ? lock_downgrade+0x6e0/0x6e0 [ 75.707423][ T8441] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 75.713656][ T8441] ? br_ioctl_call+0xa0/0xa0 [ 75.718236][ T8441] __x64_sys_ioctl+0x193/0x200 [ 75.723003][ T8441] do_syscall_64+0x35/0xb0 [ 75.727418][ T8441] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 75.733309][ T8441] RIP: 0033:0x4431e9 [ 75.737257][ T8441] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 75.756874][ T8441] RSP: 002b:00007ffd3f5d9338 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 75.765362][ T8441] RAX: ffffffffffffffda RBX: 00007ffd3f5d9348 RCX: 00000000004431e9 [ 75.773345][ T8441] RDX: 0000000020000300 RSI: 00000000000089a0 RDI: 0000000000000005 [ 75.781312][ T8441] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.789272][ T8441] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd3f5d9350 [ 75.797228][ T8441] R13: 00007ffd3