Warning: Permanently added '10.128.10.11' (ECDSA) to the list of known hosts. syzkaller login: [ 75.928019][ T6544] chnl_net:caif_netlink_parms(): no params data found [ 75.997363][ T6544] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.006940][ T6544] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.015735][ T6544] device bridge_slave_0 entered promiscuous mode [ 76.026502][ T6544] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.033724][ T6544] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.041443][ T6544] device bridge_slave_1 entered promiscuous mode [ 76.074170][ T6544] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.085722][ T6544] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.119605][ T6544] team0: Port device team_slave_0 added [ 76.127696][ T6544] team0: Port device team_slave_1 added [ 76.156645][ T6544] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.163957][ T6544] 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. [ 76.191267][ T6544] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.205163][ T6544] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.212113][ T6544] 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. [ 76.238501][ T6544] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.275931][ T6544] device hsr_slave_0 entered promiscuous mode [ 76.284548][ T6544] device hsr_slave_1 entered promiscuous mode [ 76.406575][ T6544] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.418182][ T6544] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.428272][ T6544] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.439596][ T6544] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.463408][ T6544] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.470834][ T6544] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.478583][ T6544] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.485716][ T6544] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.535021][ T6544] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.547840][ T1054] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.559625][ T1054] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.569228][ T1054] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.579166][ T1054] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.593679][ T6544] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.605777][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.614151][ T20] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.621195][ T20] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.632717][ T1054] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.641960][ T1054] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.649117][ T1054] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.674278][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.683800][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.697351][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.705642][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.720384][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.730534][ T6544] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.750248][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.758712][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.772545][ T6544] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.791122][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.812261][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.821508][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.830394][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.842647][ T6544] device veth0_vlan entered promiscuous mode [ 76.855903][ T6544] device veth1_vlan entered promiscuous mode [ 76.877548][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.886200][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.895819][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.908104][ T6544] device veth0_macvtap entered promiscuous mode [ 76.919300][ T6544] device veth1_macvtap entered promiscuous mode [ 76.936381][ T6544] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.947939][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.957192][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.967428][ T6544] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.975428][ T1054] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.984762][ T1054] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.000199][ T6544] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.009332][ T6544] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.018340][ T6544] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.028440][ T6544] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.117915][ T10] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.140042][ T10] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.180194][ T1054] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.214608][ T6883] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.222641][ T6883] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 77.234940][ T1054] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 77.265041][ T6544] [ 77.267400][ T6544] ============================================ [ 77.273550][ T6544] WARNING: possible recursive locking detected [ 77.279708][ T6544] 5.15.0-rc6-syzkaller #0 Not tainted [ 77.285154][ T6544] -------------------------------------------- [ 77.291381][ T6544] syz-executor690/6544 is trying to acquire lock: [ 77.297776][ T6544] ffff88801d92c398 (_xmit_ETHER#2){+.-.}-{2:2}, at: sch_direct_xmit+0x30f/0xbc0 [ 77.306838][ T6544] [ 77.306838][ T6544] but task is already holding lock: [ 77.314185][ T6544] ffff888015f83098 (_xmit_ETHER#2){+.-.}-{2:2}, at: sch_direct_xmit+0x30f/0xbc0 [ 77.323230][ T6544] [ 77.323230][ T6544] other info that might help us debug this: [ 77.331285][ T6544] Possible unsafe locking scenario: [ 77.331285][ T6544] [ 77.338715][ T6544] CPU0 [ 77.341978][ T6544] ---- [ 77.345257][ T6544] lock(_xmit_ETHER#2); [ 77.349493][ T6544] lock(_xmit_ETHER#2); [ 77.353735][ T6544] [ 77.353735][ T6544] *** DEADLOCK *** [ 77.353735][ T6544] [ 77.361860][ T6544] May be due to missing lock nesting notation [ 77.361860][ T6544] [ 77.370333][ T6544] 7 locks held by syz-executor690/6544: [ 77.375864][ T6544] #0: ffffffff8b981ec0 (rcu_read_lock_bh){....}-{1:2}, at: ip_finish_output2+0x28c/0x2160 [ 77.385867][ T6544] #1: ffffffff8b981ec0 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x1e3/0x3630 [ 77.396127][ T6544] #2: ffff888079536258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: __dev_queue_xmit+0x126f/0x3630 [ 77.408574][ T6544] #3: ffff888015f83098 (_xmit_ETHER#2){+.-.}-{2:2}, at: sch_direct_xmit+0x30f/0xbc0 [ 77.418058][ T6544] #4: ffffffff8b981ec0 (rcu_read_lock_bh){....}-{1:2}, at: ip_finish_output2+0x28c/0x2160 [ 77.428061][ T6544] #5: ffffffff8b981ec0 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x1e3/0x3630 [ 77.437979][ T6544] #6: ffff88801afc3258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: __dev_queue_xmit+0x126f/0x3630 [ 77.450415][ T6544] [ 77.450415][ T6544] stack backtrace: [ 77.456313][ T6544] CPU: 1 PID: 6544 Comm: syz-executor690 Not tainted 5.15.0-rc6-syzkaller #0 [ 77.465062][ T6544] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.475116][ T6544] Call Trace: [ 77.478385][ T6544] dump_stack_lvl+0xcd/0x134 [ 77.482989][ T6544] __lock_acquire.cold+0x149/0x3ab [ 77.488101][ T6544] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.494078][ T6544] ? __skb_checksum+0x890/0x890 [ 77.498927][ T6544] ? sendmsg_unlocked+0x90/0x90 [ 77.503773][ T6544] ? reqsk_fastopen_remove+0x620/0x620 [ 77.509329][ T6544] lock_acquire+0x1ab/0x510 [ 77.513838][ T6544] ? sch_direct_xmit+0x30f/0xbc0 [ 77.518784][ T6544] ? lock_release+0x720/0x720 [ 77.523468][ T6544] ? validate_xmit_skb+0x868/0xee0 [ 77.528585][ T6544] _raw_spin_lock+0x2a/0x40 [ 77.533089][ T6544] ? sch_direct_xmit+0x30f/0xbc0 [ 77.538021][ T6544] sch_direct_xmit+0x30f/0xbc0 [ 77.542780][ T6544] ? dev_watchdog+0xd50/0xd50 [ 77.547451][ T6544] ? do_raw_spin_trylock+0xb0/0x180 [ 77.552651][ T6544] ? do_raw_spin_lock+0x290/0x2b0 [ 77.557676][ T6544] __dev_queue_xmit+0x149c/0x3630 [ 77.562705][ T6544] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.568766][ T6544] ? lock_chain_count+0x20/0x20 [ 77.573638][ T6544] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 77.579266][ T6544] ? find_held_lock+0x2d/0x110 [ 77.584026][ T6544] ? ip_finish_output2+0x77f/0x2160 [ 77.589220][ T6544] ? mark_held_locks+0x9f/0xe0 [ 77.593994][ T6544] ? memcpy+0x39/0x60 [ 77.597974][ T6544] neigh_resolve_output+0x50e/0x820 [ 77.603191][ T6544] ip_finish_output2+0x77f/0x2160 [ 77.608225][ T6544] ? nf_hook+0x20d/0x5b0 [ 77.612473][ T6544] ? ip_fragment.constprop.0+0x240/0x240 [ 77.618379][ T6544] ? ip_frag_next+0x9a0/0x9a0 [ 77.623068][ T6544] __ip_finish_output+0x396/0x640 [ 77.628096][ T6544] ip_finish_output+0x32/0x200 [ 77.632857][ T6544] ip_output+0x196/0x310 [ 77.637096][ T6544] ip_local_out+0xaf/0x1a0 [ 77.641508][ T6544] iptunnel_xmit+0x628/0xa50 [ 77.646098][ T6544] ip_tunnel_xmit+0x10a6/0x2b60 [ 77.650951][ T6544] ? ip_md_tunnel_xmit+0x1520/0x1520 [ 77.656233][ T6544] ? skb_network_protocol+0x148/0x580 [ 77.661608][ T6544] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 77.667859][ T6544] ? __gre_xmit+0x535/0x970 [ 77.672361][ T6544] erspan_xmit+0x7e2/0x29c0 [ 77.676874][ T6544] dev_hard_start_xmit+0x1eb/0x920 [ 77.681987][ T6544] sch_direct_xmit+0x19f/0xbc0 [ 77.686756][ T6544] ? lock_release+0x720/0x720 [ 77.691443][ T6544] ? __lock_acquire+0x162f/0x54a0 [ 77.696462][ T6544] ? dev_watchdog+0xd50/0xd50 [ 77.701143][ T6544] ? do_raw_spin_trylock+0xb0/0x180 [ 77.706337][ T6544] ? do_raw_spin_lock+0x290/0x2b0 [ 77.711358][ T6544] __dev_queue_xmit+0x149c/0x3630 [ 77.716381][ T6544] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.722358][ T6544] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 77.727643][ T6544] ? find_held_lock+0x2d/0x110 [ 77.732402][ T6544] ? ip_finish_output2+0x77f/0x2160 [ 77.737597][ T6544] ? lock_downgrade+0x6e0/0x6e0 [ 77.742442][ T6544] ? do_raw_write_lock+0x11a/0x280 [ 77.747550][ T6544] ? memcpy+0x39/0x60 [ 77.751534][ T6544] neigh_resolve_output+0x50e/0x820 [ 77.756738][ T6544] ip_finish_output2+0x77f/0x2160 [ 77.761759][ T6544] ? nf_hook+0x20d/0x5b0 [ 77.766093][ T6544] ? ip_fragment.constprop.0+0x240/0x240 [ 77.771727][ T6544] ? ip_frag_next+0x9a0/0x9a0 [ 77.776398][ T6544] __ip_finish_output+0x396/0x640 [ 77.781441][ T6544] ip_finish_output+0x32/0x200 [ 77.786211][ T6544] ip_output+0x196/0x310 [ 77.790461][ T6544] ip_send_skb+0xd4/0x260 [ 77.794789][ T6544] udp_send_skb+0x6cd/0x11a0 [ 77.799375][ T6544] udp_sendmsg+0x1bad/0x2740 [ 77.803973][ T6544] ? ip_frag_init+0x330/0x330 [ 77.808645][ T6544] ? udp_unicast_rcv_skb+0x330/0x330 [ 77.813927][ T6544] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.820250][ T6544] ? arch_stack_walk+0x93/0xe0 [ 77.825079][ T6544] ? mark_lock+0xef/0x17b0 [ 77.829492][ T6544] ? lock_chain_count+0x20/0x20 [ 77.834334][ T6544] ? find_held_lock+0x2d/0x110 [ 77.839100][ T6544] udpv6_sendmsg+0x14f6/0x2c40 [ 77.843866][ T6544] ? mark_held_locks+0x9f/0xe0 [ 77.848624][ T6544] ? udp_v6_push_pending_frames+0x380/0x380 [ 77.854520][ T6544] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.860502][ T6544] ? find_held_lock+0x2d/0x110 [ 77.865698][ T6544] ? aa_sk_perm+0x311/0xab0 [ 77.870202][ T6544] ? aa_af_perm+0x230/0x230 [ 77.874698][ T6544] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.881034][ T6544] ? inet6_sendmsg+0x4a/0xe0 [ 77.885628][ T6544] inet6_sendmsg+0x99/0xe0 [ 77.891345][ T6544] ? inet6_compat_ioctl+0x310/0x310 [ 77.896534][ T6544] sock_sendmsg+0xcf/0x120 [ 77.900952][ T6544] ____sys_sendmsg+0x331/0x810 [ 77.905724][ T6544] ? kernel_sendmsg+0x50/0x50 [ 77.910393][ T6544] ? do_recvmmsg+0x6d0/0x6d0 [ 77.914973][ T6544] ? mark_lock+0xef/0x17b0 [ 77.919383][ T6544] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.925358][ T6544] ___sys_sendmsg+0xf3/0x170 [ 77.929942][ T6544] ? sendmsg_copy_msghdr+0x160/0x160 [ 77.935233][ T6544] ? mark_lock+0xef/0x17b0 [ 77.939640][ T6544] ? mark_lock+0xef/0x17b0 [ 77.944047][ T6544] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.950026][ T6544] ? lock_chain_count+0x20/0x20 [ 77.954871][ T6544] ? lock_chain_count+0x20/0x20 [ 77.959715][ T6544] ? release_sock+0x1b/0x1b0 [ 77.964312][ T6544] ? reacquire_held_locks+0x214/0x4e0 [ 77.969681][ T6544] ? release_sock+0x1b/0x1b0 [ 77.974265][ T6544] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 77.980502][ T6544] ? __fget_light+0x215/0x280 [ 77.985189][ T6544] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 77.991423][ T6544] __sys_sendmmsg+0x195/0x470 [ 77.996094][ T6544] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 78.001111][ T6544] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 78.007087][ T6544] ? __local_bh_enable_ip+0xa0/0x120 [ 78.012371][ T6544] ? find_held_lock+0x2d/0x110 [ 78.017127][ T6544] ? __context_tracking_exit+0xb8/0xe0 [ 78.022583][ T6544] ? lock_downgrade+0x6e0/0x6e0 [ 78.027428][ T6544] ? lock_downgrade+0x6e0/0x6e0 [ 78.032277][ T6544] __x64_sys_sendmmsg+0x99/0x100 [ 78.037211][ T6544] ? syscall_enter_from_user_mode+0x21/0x70 [ 78.043116][ T6544] do_syscall_64+0x35/0xb0 [ 78.047546][ T6544] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 78.053432][ T6544] RIP: 0033:0x7fed693e4aa9 [ 78.057854][ T6544] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 78.077452][ T6544] RSP: 002b:00007ffdaf40c178 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 78.085861][ T6544] RAX: ffffffffff