device veth1_macvtap entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready F2FS-fs (loop2): Mounted with checkpoint version = 753bd00b IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready ================================================ WARNING: lock held when returning to user space! 4.14.302-syzkaller #0 Not tainted ------------------------------------------------ IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready syz-executor.2/9383 is leaving the kernel with locks still held! 1 lock held by syz-executor.2/9383: batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 #0: (sb_writers#13){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#13){.+.+}, at: [] mnt_want_write_file+0xfd/0x3b0 fs/namespace.c:497 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_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:3e) 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:3e) 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:3e) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! Bluetooth: hci0 command 0x0419 tx timeout IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready ------------[ cut here ]------------ batman_adv: batadv0: Interface activated: batadv_slave_0 WARNING: CPU: 1 PID: 7986 at fs/namespace.c:1178 cleanup_mnt+0x222/0x2c0 fs/namespace.c:1178