syz-executor.1 (13175): drop_caches: 2 vhci_hcd: connection closed vhci_hcd: stop threads vhci_hcd: release socket ====================================================== WARNING: possible circular locking dependency detected 4.19.195-syzkaller #0 Not tainted ------------------------------------------------------ kworker/0:3/9126 is trying to acquire lock: 00000000f8cecf9b (&sb->s_type->i_mutex_key#13){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] 00000000f8cecf9b (&sb->s_type->i_mutex_key#13){+.+.}, at: __sock_release+0x86/0x2a0 net/socket.c:578 but task is already holding lock: 00000000325a0694 ((delayed_fput_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 ((delayed_fput_work).work){+.+.}: worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 -> #2 ((wq_completion)"events"){+.+.}: flush_scheduled_work include/linux/workqueue.h:599 [inline] tipc_exit_net+0x38/0x60 net/tipc/core.c:100 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:553 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 -> #1 (pernet_ops_rwsem){++++}: unregister_netdevice_notifier+0x7b/0x330 net/core/dev.c:1708 raw_release+0x58/0x820 net/can/raw.c:358 __sock_release+0xcd/0x2a0 net/socket.c:579 sock_close+0x15/0x20 net/socket.c:1140 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&sb->s_type->i_mutex_key#13){+.+.}: down_write+0x34/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:748 [inline] __sock_release+0x86/0x2a0 net/socket.c:578 sock_close+0x15/0x20 net/socket.c:1140 __fput+0x2ce/0x890 fs/file_table.c:278 delayed_fput+0x56/0x70 fs/file_table.c:304 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 other info that might help us debug this: Chain exists of: &sb->s_type->i_mutex_key#13 --> (wq_completion)"events" --> (delayed_fput_work).work Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((delayed_fput_work).work); lock((wq_completion)"events"); lock((delayed_fput_work).work); lock(&sb->s_type->i_mutex_key#13); *** DEADLOCK *** 2 locks held by kworker/0:3/9126: #0: 00000000189ca1d5 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000325a0694 ((delayed_fput_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 stack backtrace: CPU: 0 PID: 9126 Comm: kworker/0:3 Not tainted 4.19.195-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events delayed_fput Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 down_write+0x34/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:748 [inline] __sock_release+0x86/0x2a0 net/socket.c:578 sock_close+0x15/0x20 net/socket.c:1140 __fput+0x2ce/0x890 fs/file_table.c:278 delayed_fput+0x56/0x70 fs/file_table.c:304 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 vhci_hcd: vhci_device speed not set vhci_hcd: disconnect device syz-executor.1 (13181): drop_caches: 2 vhci_hcd vhci_hcd.0: pdev(1) rhport(1) sockfd(5) vhci_hcd vhci_hcd.0: devid(0) speed(2) speed_str(full-speed) syz-executor.1 (13181): drop_caches: 2 syz-executor.1 (13181): drop_caches: 2 usb 11-1: new full-speed USB device number 2 using vhci_hcd vhci_hcd vhci_hcd.0: Device attached vhci_hcd: connection closed syz-executor.1 (13181): drop_caches: 2 usb 11-1: enqueue for inactive port 0 usb 11-1: enqueue for inactive port 0 usb 11-1: enqueue for inactive port 0 vhci_hcd: stop threads vhci_hcd: release socket vhci_hcd: disconnect device syz-executor.1 (13181): drop_caches: 2 syz-executor.1 (13181): drop_caches: 2 syz-executor.1 (13181): drop_caches: 2 vhci_hcd: vhci_device speed not set syz-executor.0 (13190): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.1 (13192): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.1 (13192): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.1 (13192): drop_caches: 2 syz-executor.1 (13192): drop_caches: 2 syz-executor.2 uses old SIOCAX25GETINFO syz-executor.1 (13192): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.1 (13192): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.1 (13192): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.0 (13190): drop_caches: 2 syz-executor.1 (13202): drop_caches: 2 syz-executor.1 (13202): drop_caches: 2 syz-executor.1 (13202): drop_caches: 2 syz-executor.1 (13202): drop_caches: 2 syz-executor.1 (13202): drop_caches: 2 syz-executor.1 (13202): drop_caches: 2 syz-executor.1 (13202): drop_caches: 2 syz-executor.1 (13212): drop_caches: 2 syz-executor.0 (13210): drop_caches: 2 syz-executor.1 (13212): drop_caches: 2 syz-executor.0 (13210): drop_caches: 2 syz-executor.1 (13212): drop_caches: 2 syz-executor.0 (13210): drop_caches: 2 syz-executor.0 (13210): drop_caches: 2 syz-executor.1 (13212): drop_caches: 2 syz-executor.0 (13210): drop_caches: 2 syz-executor.1 (13212): drop_caches: 2 syz-executor.0 (13210): drop_caches: 2 syz-executor.1 (13212): drop_caches: 2 syz-executor.1 (13212): drop_caches: 2 syz-executor.0 (13210): drop_caches: 2 syz-executor.0 (13218): drop_caches: 2 syz-executor.0 (13218): drop_caches: 2 syz-executor.0 (13218): drop_caches: 2 syz-executor.0 (13218): drop_caches: 2 syz-executor.0 (13218): drop_caches: 2 syz-executor.1 (13223): drop_caches: 2 syz-executor.0 (13218): drop_caches: 2 syz-executor.1 (13223): drop_caches: 2 syz-executor.0 (13218): drop_caches: 2 syz-executor.1 (13223): drop_caches: 2 syz-executor.1 (13223): drop_caches: 2 syz-executor.1 (13223): drop_caches: 2 syz-executor.1 (13223): drop_caches: 2 syz-executor.1 (13223): drop_caches: 2 syz-executor.1 (13234): drop_caches: 2 syz-executor.1 (13234): drop_caches: 2 syz-executor.1 (13234): drop_caches: 2 syz-executor.1 (13234): drop_caches: 2 syz-executor.1 (13234): drop_caches: 2 syz-executor.1 (13234): drop_caches: 2 syz-executor.1 (13234): drop_caches: 2 syz-executor.1 (13245): drop_caches: 2 syz-executor.1 (13245): drop_caches: 2 syz-executor.1 (13245): drop_caches: 2 syz-executor.1 (13245): drop_caches: 2 syz-executor.1 (13245): drop_caches: 2 syz-executor.1 (13245): drop_caches: 2 syz-executor.1 (13245): drop_caches: 2 syz-executor.0 (13265): drop_caches: 2 syz-executor.0 (13265): drop_caches: 2 syz-executor.0 (13265): drop_caches: 2 syz-executor.0 (13265): drop_caches: 2 syz-executor.1 (13267): drop_caches: 2 syz-executor.0 (13265): drop_caches: 2 syz-executor.0 (13265): drop_caches: 2 syz-executor.1 (13267): drop_caches: 2 syz-executor.0 (13265): drop_caches: 2 syz-executor.1 (13267): drop_caches: 2 syz-executor.1 (13267): drop_caches: 2 syz-executor.1 (13267): drop_caches: 2 syz-executor.1 (13267): drop_caches: 2 syz-executor.1 (13267): drop_caches: 2 syz-executor.0 (13273): drop_caches: 2 syz-executor.0 (13273): drop_caches: 2 syz-executor.0 (13273): drop_caches: 2 syz-executor.0 (13273): drop_caches: 2 syz-executor.0 (13273): drop_caches: 2 syz-executor.1 (13275): drop_caches: 2 syz-executor.1 (13275): drop_caches: 2 syz-executor.0 (13273): drop_caches: 2 syz-executor.1 (13275): drop_caches: 2 syz-executor.0 (13273): drop_caches: 2 syz-executor.1 (13275): drop_caches: 2 syz-executor.1 (13275): drop_caches: 2 syz-executor.1 (13275): drop_caches: 2 syz-executor.1 (13275): drop_caches: 2 syz-executor.0 (13282): drop_caches: 2 syz-executor.0 (13282): drop_caches: 2 syz-executor.0 (13282): drop_caches: 2 syz-executor.0 (13282): drop_caches: 2 syz-executor.0 (13282): drop_caches: 2 syz-executor.0 (13282): drop_caches: 2 syz-executor.0 (13282): drop_caches: 2 syz-executor.1 (13288): drop_caches: 2 syz-executor.1 (13288): drop_caches: 2 BFS-fs: bfs_fill_super(): No BFS filesystem on loop0 (magic=f8fd0000) syz-executor.1 (13288): drop_caches: 2 syz-executor.0 (13289): drop_caches: 2 syz-executor.0 (13289): drop_caches: 2 syz-executor.1 (13288): drop_caches: 2 syz-executor.0 (13289): drop_caches: 2 syz-executor.1 (13288): drop_caches: 2 syz-executor.0 (13289): drop_caches: 2 syz-executor.1 (13288): drop_caches: 2 syz-executor.0 (13289): drop_caches: 2 syz-executor.1 (13288): drop_caches: 2 syz-executor.0 (13289): drop_caches: 2 syz-executor.0 (13289): drop_caches: 2 netlink: 32 bytes leftover after parsing attributes in process `syz-executor.0'. syz-executor.0 (13304): drop_caches: 2 syz-executor.0 (13304): drop_caches: 2 syz-executor.0 (13304): drop_caches: 2 syz-executor.0 (13304): drop_caches: 2 syz-executor.0 (13304): drop_caches: 2 syz-executor.0 (13304): drop_caches: 2 syz-executor.0 (13304): drop_caches: 2 syz-executor.0 (13310): drop_caches: 2 nbd: couldn't find device at index -1577385984 syz-executor.0 (13310): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.0 (13310): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.0 (13310): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.0 (13310): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.0 (13310): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.0 (13310): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 nbd: couldn't find device at index -1577385984 syz-executor.1 (13309): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 syz-executor.1 (13309): drop_caches: 2 batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode device hsr_slave_1 left promiscuous mode device hsr_slave_0 left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves IPVS: ftp: loaded support on port[0] = 21 chnl_net:caif_netlink_parms(): no params data found bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered disabled state device bridge_slave_0 entered promiscuous mode bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_1 entered promiscuous mode bond0: Enslaving bond_slave_0 as an active interface with an up link bond0: Enslaving bond_slave_1 as an active interface with an up link IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready team0: Port device team_slave_0 added IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready team0: Port device team_slave_1 added batman_adv: batadv0: Adding interface: batadv_slave_0 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. batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active batman_adv: batadv0: Adding interface: batadv_slave_1 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. batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready device hsr_slave_0 entered promiscuous mode device hsr_slave_1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state 8021q: adding VLAN 0 to HW filter on device bond0 IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready bridge0: port 1(bridge_slave_0) entered disabled state bridge0: port 2(bridge_slave_1) entered disabled state IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready 8021q: adding VLAN 0 to HW filter on device team0 IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready 8021q: adding VLAN 0 to HW filter on device batadv0 IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_virt_wifi: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready device veth0_vlan entered promiscuous mode device veth1_vlan entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready device veth0_macvtap entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready device veth1_macvtap entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready batman_adv: batadv0: Interface activated: batadv_slave_0 IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready batman_adv: batadv0: Interface activated: batadv_slave_1 IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready ieee80211 phy18: Selected rate control algorithm 'minstrel_ht' IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 ieee80211 phy19: Selected rate control algorithm 'minstrel_ht' wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready syz-executor.0 (13590): drop_caches: 2 syz-executor.1 (13591): drop_caches: 2 syz-executor.3 (13585): drop_caches: 2 syz-executor.0 (13590): drop_caches: 2 syz-executor.1 (13591): drop_caches: 2 syz-executor.0 (13590): drop_caches: 2 syz-executor.3 (13585): drop_caches: 2 syz-executor.1 (13591): drop_caches: 2 IPVS: ftp: loaded support on port[0] = 21 syz-executor.1 (13591): drop_caches: 2 syz-executor.0 (13590): drop_caches: 2 syz-executor.3 (13585): drop_caches: 2 syz-executor.0 (13590): drop_caches: 2 syz-executor.0 (13590): drop_caches: 2 syz-executor.1 (13591): drop_caches: 2 syz-executor.0 (13590): drop_caches: 2 syz-executor.3 (13585): drop_caches: 2 syz-executor.1 (13591): drop_caches: 2 syz-executor.0 (13590): drop_caches: 2 syz-executor.3 (13585): drop_caches: 2 syz-executor.0 (13590): drop_caches: 2 syz-executor.1 (13591): drop_caches: 2 syz-executor.0 (13621): drop_caches: 2 syz-executor.3 (13585): drop_caches: 2 syz-executor.0 (13621): drop_caches: 2 syz-executor.3 (13585): drop_caches: 2 syz-executor.0 (13621): drop_caches: 2 syz-executor.0 (13621): drop_caches: 2 syz-executor.0 (13621): drop_caches: 2 syz-executor.0 (13621): drop_caches: 2 IPVS: ftp: loaded support on port[0] = 21 syz-executor.0 (13621): drop_caches: 2 syz-executor.3 (13687): drop_caches: 2 syz-executor.3 (13687): drop_caches: 2 syz-executor.0 (13695): drop_caches: 2 syz-executor.3 (13687): drop_caches: 2 syz-executor.3 (13687): drop_caches: 2