DUID 00:04:f2:2d:62:da:c3:85:a0:c9:3a:ab:4f:1c:2c:dc:65:98 forked to background, child pid 3172 [ 26.461467][ T3173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.480026][ T3173] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.154' (ECDSA) to the list of known hosts. syzkaller login: [ 51.445072][ T3590] chnl_net:caif_netlink_parms(): no params data found [ 51.487266][ T3590] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.494739][ T3590] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.503636][ T3590] device bridge_slave_0 entered promiscuous mode [ 51.512603][ T3590] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.520642][ T3590] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.528535][ T3590] device bridge_slave_1 entered promiscuous mode [ 51.549443][ T3590] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.560329][ T3590] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.583152][ T3590] team0: Port device team_slave_0 added [ 51.590735][ T3590] team0: Port device team_slave_1 added [ 51.608373][ T3590] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.616116][ T3590] 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. [ 51.643049][ T3590] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.656618][ T3590] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.663567][ T3590] 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. [ 51.689557][ T3590] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.715114][ T3590] device hsr_slave_0 entered promiscuous mode [ 51.722311][ T3590] device hsr_slave_1 entered promiscuous mode [ 51.804419][ T3590] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.816403][ T3590] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.824932][ T3590] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 51.834137][ T3590] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 51.853356][ T3590] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.860594][ T3590] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.868521][ T3590] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.875600][ T3590] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.921030][ T3590] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.931892][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.942865][ T14] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.951594][ T14] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.961149][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.973674][ T3590] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.985088][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.993642][ T141] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.000828][ T141] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.027115][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.036119][ T141] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.043184][ T141] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.051424][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.060076][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.068644][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.080609][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.088753][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.099126][ T3590] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.118030][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.126028][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.138827][ T3590] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.247364][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.264468][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.272861][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.280674][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.290819][ T3590] device veth0_vlan entered promiscuous mode [ 52.301639][ T3590] device veth1_vlan entered promiscuous mode [ 52.319694][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.328760][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.337580][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.349244][ T3590] device veth0_macvtap entered promiscuous mode [ 52.358974][ T3590] device veth1_macvtap entered promiscuous mode [ 52.374685][ T3590] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.382226][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.393189][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.405026][ T3590] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.413007][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.424126][ T3590] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.434276][ T3590] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.443368][ T3590] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 52.453587][ T3590] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.490605][ T3590] netlink: 'syz-executor316': attribute type 2 has an invalid length. [ 52.501392][ T3590] netlink: 194488 bytes leftover after parsing attributes in process `syz-executor316'. [ 52.512939][ T3590] [ 52.515435][ T3590] ============================= [ 52.520285][ T3590] WARNING: suspicious RCU usage [ 52.525112][ T3590] 5.18.0-rc3-syzkaller-01379-gcfc1d91a7d78 #0 Not tainted [ 52.532668][ T3590] ----------------------------- [ 52.537834][ T3590] net/hsr/hsr_framereg.c:41 suspicious rcu_dereference_check() usage! [ 52.547051][ T3590] [ 52.547051][ T3590] other info that might help us debug this: [ 52.547051][ T3590] [ 52.557627][ T3590] [ 52.557627][ T3590] rcu_scheduler_active = 2, debug_locks = 1 [ 52.565877][ T3590] 3 locks held by syz-executor316/3590: [ 52.571471][ T3590] #0: ffffffff8d6005f0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 [ 52.579965][ T3590] #1: ffffffff8d6006a8 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 [ 52.589216][ T3590] #2: ffffffff8bd81de0 (rcu_read_lock){....}-{1:2}, at: hsr_get_node_list+0xcb/0xa80 [ 52.598945][ T3590] [ 52.598945][ T3590] stack backtrace: [ 52.604839][ T3590] CPU: 1 PID: 3590 Comm: syz-executor316 Not tainted 5.18.0-rc3-syzkaller-01379-gcfc1d91a7d78 #0 [ 52.615336][ T3590] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.625377][ T3590] Call Trace: [ 52.628643][ T3590] [ 52.631563][ T3590] dump_stack_lvl+0xcd/0x134 [ 52.636151][ T3590] hsr_node_get_first+0xc7/0xe0 [ 52.641000][ T3590] hsr_get_next_node+0x1d0/0x320 [ 52.645943][ T3590] hsr_get_node_list+0x333/0xa80 [ 52.650880][ T3590] ? hsr_get_node_status+0xcc0/0xcc0 [ 52.656174][ T3590] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.662405][ T3590] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x1b7/0x290 [ 52.669774][ T3590] ? genl_family_rcv_msg_attrs_parse.constprop.0+0xaf/0x290 [ 52.677061][ T3590] genl_family_rcv_msg_doit+0x228/0x320 [ 52.682610][ T3590] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x290/0x290 [ 52.689980][ T3590] ? mutex_lock_io_nested+0x1150/0x1150 [ 52.695533][ T3590] ? genl_op_from_small+0x23/0x3c0 [ 52.700642][ T3590] ? genl_get_cmd+0x3cf/0x480 [ 52.705317][ T3590] genl_rcv_msg+0x328/0x580 [ 52.709818][ T3590] ? genl_get_cmd+0x480/0x480 [ 52.714492][ T3590] ? hsr_get_node_status+0xcc0/0xcc0 [ 52.719776][ T3590] ? lock_release+0x720/0x720 [ 52.724448][ T3590] ? ref_tracker_dir_exit+0x3e0/0x3e0 [ 52.729813][ T3590] netlink_rcv_skb+0x153/0x420 [ 52.734572][ T3590] ? genl_get_cmd+0x480/0x480 [ 52.739247][ T3590] ? netlink_ack+0xa80/0xa80 [ 52.743837][ T3590] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.749132][ T3590] genl_rcv+0x24/0x40 [ 52.753112][ T3590] netlink_unicast+0x543/0x7f0 [ 52.757882][ T3590] ? netlink_attachskb+0x880/0x880 [ 52.762985][ T3590] ? __virt_addr_valid+0x5d/0x2d0 [ 52.768007][ T3590] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.774240][ T3590] ? __phys_addr_symbol+0x2c/0x70 [ 52.779258][ T3590] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.784965][ T3590] ? __check_object_size+0x16c/0x4f0 [ 52.790261][ T3590] netlink_sendmsg+0x904/0xe00 [ 52.795029][ T3590] ? netlink_unicast+0x7f0/0x7f0 [ 52.799968][ T3590] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.806199][ T3590] ? netlink_unicast+0x7f0/0x7f0 [ 52.811133][ T3590] sock_sendmsg+0xcf/0x120 [ 52.815549][ T3590] ____sys_sendmsg+0x6e2/0x800 [ 52.820321][ T3590] ? kernel_sendmsg+0x50/0x50 [ 52.824995][ T3590] ? do_recvmmsg+0x6d0/0x6d0 [ 52.829582][ T3590] ? find_held_lock+0x2d/0x110 [ 52.834349][ T3590] ? find_held_lock+0x2d/0x110 [ 52.839110][ T3590] ___sys_sendmsg+0xf3/0x170 [ 52.843691][ T3590] ? sendmsg_copy_msghdr+0x160/0x160 [ 52.848981][ T3590] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.854955][ T3590] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.860940][ T3590] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.867347][ T3590] ? __fget_light+0x20f/0x270 [ 52.872024][ T3590] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.879043][ T3590] __sys_sendmsg+0xe5/0x1b0 [ 52.883538][ T3590] ? __sys_sendmsg_sock+0x30/0x30 [ 52.888566][ T3590] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.894459][ T3590] do_syscall_64+0x35/0xb0 [ 52.898875][ T3590] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.904765][ T3590] RIP: 0033:0x7f388d350919 [ 52.909175][ T3590] 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 [ 52.928773][ T3590] RSP: 002b:00007ffe354b23f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 52.937177][ T3590] RAX: ffffffffffffffda RBX: 00007ffe354b2408 RCX: 00007f388d350919 [ 52.945139][ T3590] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 52.953104][ T3590] RBP: 0000000000000003 R08: bb1414ac00000000 R09: bb1414ac00000000 [ 52.961066][ T3590] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe354b2410 [ 52.969028][ T3590] R13: 00007ffe354b2404 R14: 0000000000000003 R15: 0000000000000000 [ 52.977003][ T3590]