[ 9.090069][ T3992] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: [ 9.119774][ T9] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 9.129015][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready OK Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.7' (ED25519) to the list of known hosts. 1970/01/01 00:00:25 parsed 1 programs syzkaller login: [ 27.056672][ T4326] cgroup: Unknown subsys name 'net' [ 27.318536][ T4326] cgroup: Unknown subsys name 'rlimit' [ 27.609349][ T4326] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 32.485396][ T4354] chnl_net:caif_netlink_parms(): no params data found [ 32.503104][ T4354] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.504331][ T4354] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.506097][ T4354] device bridge_slave_0 entered promiscuous mode [ 32.508320][ T4354] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.509506][ T4354] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.510987][ T4354] device bridge_slave_1 entered promiscuous mode [ 32.518452][ T4354] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 32.520686][ T4354] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 32.529179][ T4354] team0: Port device team_slave_0 added [ 32.530893][ T4354] team0: Port device team_slave_1 added [ 32.536681][ T4354] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 32.537780][ T4354] 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. [ 32.541474][ T4354] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 32.544014][ T4354] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 32.545053][ T4354] 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. [ 32.549095][ T4354] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 32.607104][ T4354] device hsr_slave_0 entered promiscuous mode [ 32.646018][ T4354] device hsr_slave_1 entered promiscuous mode [ 32.719581][ T4354] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 32.758796][ T4354] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 32.808547][ T4354] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 32.859217][ T4354] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 32.904257][ T4354] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.905348][ T4354] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.906684][ T4354] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.907738][ T4354] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.924072][ T4354] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.928329][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.930470][ T1615] bridge0: port 1(bridge_slave_0) entered disabled state [ 32.932305][ T1615] bridge0: port 2(bridge_slave_1) entered disabled state [ 32.937794][ T4354] 8021q: adding VLAN 0 to HW filter on device team0 [ 32.940844][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 32.942348][ T1615] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.943428][ T1615] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.949762][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 32.951149][ T1615] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.952182][ T1615] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.958233][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 32.959860][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 32.962609][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 32.965374][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 32.969142][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 32.971542][ T4354] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 33.023238][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 33.024531][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 33.028953][ T4354] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 33.035593][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 33.041993][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 33.043670][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 33.045170][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 33.048394][ T4354] device veth0_vlan entered promiscuous mode [ 33.051400][ T4354] device veth1_vlan entered promiscuous mode [ 33.061735][ T4354] device veth0_macvtap entered promiscuous mode [ 33.063957][ T4354] device veth1_macvtap entered promiscuous mode [ 33.067373][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 33.068887][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 33.070593][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 33.072132][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 33.078562][ T4354] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 33.079936][ T1578] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 33.083818][ T4354] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 33.085117][ T1578] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 33.088790][ T4354] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 33.090148][ T4354] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 33.091479][ T4354] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 33.092757][ T4354] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 33.202998][ T4380] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 33.204509][ T4380] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 33.205748][ T4380] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 33.207683][ T4380] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 33.209030][ T4380] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 33.210240][ T4380] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 33.305601][ T1615] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 33.307565][ T1615] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 33.309287][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 33.320614][ T1615] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 33.321821][ T1615] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 33.323707][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:00:34 executed programs: 0 [ 34.062067][ T47] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 34.063659][ T47] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 34.064886][ T47] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 34.067855][ T47] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 34.069233][ T47] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 34.070419][ T47] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 34.119714][ T4421] chnl_net:caif_netlink_parms(): no params data found [ 34.136865][ T4421] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.138068][ T4421] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.139639][ T4421] device bridge_slave_0 entered promiscuous mode [ 34.141593][ T4421] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.142742][ T4421] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.144500][ T4421] device bridge_slave_1 entered promiscuous mode [ 34.157171][ T4421] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 34.159743][ T4421] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 34.168290][ T4421] team0: Port device team_slave_0 added [ 34.170245][ T4421] team0: Port device team_slave_1 added [ 34.176723][ T4421] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 34.177870][ T4421] 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. [ 34.181920][ T4421] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 34.184116][ T4421] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 34.185205][ T4421] 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. [ 34.189226][ T4421] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 34.247089][ T4421] device hsr_slave_0 entered promiscuous mode [ 34.306637][ T4421] device hsr_slave_1 entered promiscuous mode [ 34.345881][ T4421] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 34.347159][ T4421] Cannot create hsr debugfs directory [ 34.627055][ T4421] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 36.086407][ T4380] Bluetooth: hci0: command 0x0409 tx timeout [ 37.807077][ T4421] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 38.165973][ T4380] Bluetooth: hci0: command 0x041b tx timeout [ 38.786929][ T4421] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 38.868847][ T4421] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 39.088448][ T4421] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 39.137311][ T4421] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 39.218030][ T4421] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 39.257264][ T4421] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 39.356913][ T4421] 8021q: adding VLAN 0 to HW filter on device bond0 [ 39.360366][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 39.361853][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 39.364212][ T4421] 8021q: adding VLAN 0 to HW filter on device team0 [ 39.398478][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 39.399984][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 39.401797][ T1615] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.402867][ T1615] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.404353][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 39.408374][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 39.409875][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 39.411755][ T1615] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.412854][ T1615] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.414787][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 39.418609][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 39.421053][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 39.422830][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 39.424236][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 39.426899][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 39.428562][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 39.431039][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 39.432394][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 39.434824][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 39.437527][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 39.480212][ T4421] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 39.528672][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 39.529974][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 39.532731][ T4421] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 39.571935][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 39.573470][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 39.578840][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 39.580408][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 39.581851][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 39.583217][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 39.585192][ T4421] device veth0_vlan entered promiscuous mode [ 39.588442][ T4421] device veth1_vlan entered promiscuous mode [ 39.594278][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 39.595706][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 39.597338][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 39.598745][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 39.601138][ T4421] device veth0_macvtap entered promiscuous mode [ 39.603505][ T4421] device veth1_macvtap entered promiscuous mode [ 39.669255][ T4421] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 39.670944][ T4421] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 39.672764][ T4421] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 39.673811][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 39.675326][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 39.677285][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 39.678796][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 39.681855][ T4421] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 39.683393][ T4421] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 39.685237][ T4421] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 39.686607][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 39.688164][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 39.690609][ T4421] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.691985][ T4421] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.693221][ T4421] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.694446][ T4421] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 39.711185][ T39] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 39.714990][ T39] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 39.718111][ T1615] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 39.759637][ T39] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 39.761224][ T39] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 39.762980][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 39.817776][ T4458] loop0: detected capacity change from 0 to 512 [ 39.830004][ T4458] [ 39.830386][ T4458] ====================================================== [ 39.831324][ T4458] WARNING: possible circular locking dependency detected [ 39.832433][ T4458] syzkaller #0 Not tainted [ 39.833075][ T4458] ------------------------------------------------------ [ 39.834023][ T4458] syz.0.17/4458 is trying to acquire lock: [ 39.834824][ T4458] ffff0000de298b98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x188/0x284c [ 39.836221][ T4458] [ 39.836221][ T4458] but task is already holding lock: [ 39.837205][ T4458] ffff0000e90b9ee0 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x37c/0x790 [ 39.838570][ T4458] [ 39.838570][ T4458] which lock already depends on the new lock. [ 39.838570][ T4458] [ 39.840014][ T4458] [ 39.840014][ T4458] the existing dependency chain (in reverse order) is: [ 39.841200][ T4458] [ 39.841200][ T4458] -> #2 (&ei->xattr_sem){++++}-{3:3}: [ 39.842323][ T4458] down_read+0x64/0x304 [ 39.843063][ T4458] ext4_setattr+0x7c4/0x150c [ 39.843832][ T4458] notify_change+0xb0c/0xdcc [ 39.844595][ T4458] chown_common+0x414/0x574 [ 39.845377][ T4458] do_fchownat+0x158/0x268 [ 39.846059][ T4458] __arm64_sys_fchownat+0xb8/0xd4 [ 39.846871][ T4458] invoke_syscall+0x98/0x2bc [ 39.847574][ T4458] el0_svc_common+0x138/0x258 [ 39.848323][ T4458] do_el0_svc+0x58/0x13c [ 39.849014][ T4458] el0_svc+0x58/0x138 [ 39.849653][ T4458] el0t_64_sync_handler+0x84/0xf0 [ 39.850493][ T4458] el0t_64_sync+0x18c/0x190 [ 39.851176][ T4458] [ 39.851176][ T4458] -> #1 (jbd2_handle){++++}-{0:0}: [ 39.852251][ T4458] start_this_handle+0xfe0/0x122c [ 39.853054][ T4458] jbd2__journal_start+0x288/0x51c [ 39.853814][ T4458] __ext4_journal_start_sb+0x2fc/0x674 [ 39.854687][ T4458] ext4_writepages+0xa28/0x284c [ 39.855457][ T4458] do_writepages+0x2c0/0x4fc [ 39.856184][ T4458] __writeback_single_inode+0x164/0x157c [ 39.857112][ T4458] writeback_sb_inodes+0x824/0x1404 [ 39.857950][ T4458] __writeback_inodes_wb+0x110/0x394 [ 39.858790][ T4458] wb_writeback+0x414/0xfb0 [ 39.859507][ T4458] wb_workfn+0xac0/0xd98 [ 39.860159][ T4458] process_one_work+0x7f4/0x13a8 [ 39.860954][ T4458] worker_thread+0x8c8/0xfbc [ 39.861678][ T4458] kthread+0x250/0x2d8 [ 39.862352][ T4458] ret_from_fork+0x10/0x20 [ 39.863070][ T4458] [ 39.863070][ T4458] -> #0 (&sbi->s_writepages_rwsem){.+.+}-{0:0}: [ 39.864269][ T4458] __lock_acquire+0x293c/0x6544 [ 39.865031][ T4458] lock_acquire+0x20c/0x644 [ 39.865714][ T4458] percpu_down_read+0x70/0x2a8 [ 39.866466][ T4458] ext4_writepages+0x188/0x284c [ 39.867192][ T4458] do_writepages+0x2c0/0x4fc [ 39.867843][ T4458] __writeback_single_inode+0x164/0x157c [ 39.868636][ T4458] writeback_single_inode+0x1c0/0x720 [ 39.869468][ T4458] write_inode_now+0x144/0x1b0 [ 39.870165][ T4458] iput+0x5cc/0x7f4 [ 39.870786][ T4458] ext4_xattr_block_set+0x17a4/0x2810 [ 39.871593][ T4458] ext4_expand_extra_isize_ea+0xcb8/0x15cc [ 39.872466][ T4458] __ext4_expand_extra_isize+0x298/0x358 [ 39.873354][ T4458] __ext4_mark_inode_dirty+0x3e4/0x790 [ 39.874284][ T4458] ext4_evict_inode+0xb58/0x1270 [ 39.875034][ T4458] evict+0x3c8/0x810 [ 39.875667][ T4458] iput+0x764/0x7f4 [ 39.876332][ T4458] ext4_process_orphan+0x240/0x2b4 [ 39.877166][ T4458] ext4_orphan_cleanup+0x908/0x104c [ 39.877972][ T4458] ext4_fill_super+0x6440/0x68a8 [ 39.878771][ T4458] get_tree_bdev+0x358/0x544 [ 39.879533][ T4458] ext4_get_tree+0x28/0x38 [ 39.880241][ T4458] vfs_get_tree+0x90/0x274 [ 39.880973][ T4458] do_new_mount+0x228/0x810 [ 39.881691][ T4458] path_mount+0x5b4/0xe78 [ 39.882358][ T4458] __arm64_sys_mount+0x49c/0x584 [ 39.883131][ T4458] invoke_syscall+0x98/0x2bc [ 39.883835][ T4458] el0_svc_common+0x138/0x258 [ 39.884550][ T4458] do_el0_svc+0x58/0x13c [ 39.885300][ T4458] el0_svc+0x58/0x138 [ 39.885920][ T4458] el0t_64_sync_handler+0x84/0xf0 [ 39.886755][ T4458] el0t_64_sync+0x18c/0x190 [ 39.887487][ T4458] [ 39.887487][ T4458] other info that might help us debug this: [ 39.887487][ T4458] [ 39.888984][ T4458] Chain exists of: [ 39.888984][ T4458] &sbi->s_writepages_rwsem --> jbd2_handle --> &ei->xattr_sem [ 39.888984][ T4458] [ 39.891045][ T4458] Possible unsafe locking scenario: [ 39.891045][ T4458] [ 39.892074][ T4458] CPU0 CPU1 [ 39.892881][ T4458] ---- ---- [ 39.893627][ T4458] lock(&ei->xattr_sem); [ 39.894254][ T4458] lock(jbd2_handle); [ 39.895159][ T4458] lock(&ei->xattr_sem); [ 39.896138][ T4458] lock(&sbi->s_writepages_rwsem); [ 39.896948][ T4458] [ 39.896948][ T4458] *** DEADLOCK *** [ 39.896948][ T4458] [ 39.898086][ T4458] 3 locks held by syz.0.17/4458: [ 39.898779][ T4458] #0: ffff0000d26e80e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1a4/0x804 [ 39.900171][ T4458] #1: ffff0000d26e8650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x3dc/0x1270 [ 39.901548][ T4458] #2: ffff0000e90b9ee0 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x37c/0x790 [ 39.902943][ T4458] [ 39.902943][ T4458] stack backtrace: [ 39.903767][ T4458] CPU: 1 PID: 4458 Comm: syz.0.17 Not tainted syzkaller #0 [ 39.904792][ T4458] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 39.906152][ T4458] Call trace: [ 39.906633][ T4458] dump_backtrace+0x1c8/0x1f4 [ 39.907319][ T4458] show_stack+0x2c/0x3c [ 39.907940][ T4458] __dump_stack+0x30/0x40 [ 39.908604][ T4458] dump_stack_lvl+0xf8/0x160 [ 39.909203][ T4458] dump_stack+0x1c/0x5c [ 39.909797][ T4458] print_circular_bug+0x148/0x1b0 [ 39.910487][ T4458] check_noncircular+0x240/0x2d4 [ 39.911161][ T4458] __lock_acquire+0x293c/0x6544 [ 39.911823][ T4458] lock_acquire+0x20c/0x644 [ 39.912524][ T4458] percpu_down_read+0x70/0x2a8 [ 39.913135][ T4458] ext4_writepages+0x188/0x284c [ 39.913836][ T4458] do_writepages+0x2c0/0x4fc [ 39.914488][ T4458] __writeback_single_inode+0x164/0x157c [ 39.915219][ T4458] writeback_single_inode+0x1c0/0x720 [ 39.915973][ T4458] write_inode_now+0x144/0x1b0 [ 39.916637][ T4458] iput+0x5cc/0x7f4 [ 39.917171][ T4458] ext4_xattr_block_set+0x17a4/0x2810 [ 39.917957][ T4458] ext4_expand_extra_isize_ea+0xcb8/0x15cc [ 39.918799][ T4458] __ext4_expand_extra_isize+0x298/0x358 [ 39.919601][ T4458] __ext4_mark_inode_dirty+0x3e4/0x790 [ 39.920368][ T4458] ext4_evict_inode+0xb58/0x1270 [ 39.921087][ T4458] evict+0x3c8/0x810 [ 39.921602][ T4458] iput+0x764/0x7f4 [ 39.922135][ T4458] ext4_process_orphan+0x240/0x2b4 [ 39.922833][ T4458] ext4_orphan_cleanup+0x908/0x104c [ 39.923609][ T4458] ext4_fill_super+0x6440/0x68a8 [ 39.924329][ T4458] get_tree_bdev+0x358/0x544 [ 39.924943][ T4458] ext4_get_tree+0x28/0x38 [ 39.925583][ T4458] vfs_get_tree+0x90/0x274 [ 39.926240][ T4458] do_new_mount+0x228/0x810 [ 39.926887][ T4458] path_mount+0x5b4/0xe78 [ 39.927507][ T4458] __arm64_sys_mount+0x49c/0x584 [ 39.928213][ T4458] invoke_syscall+0x98/0x2bc [ 39.928862][ T4458] el0_svc_common+0x138/0x258 [ 39.929527][ T4458] do_el0_svc+0x58/0x13c [ 39.930125][ T4458] el0_svc+0x58/0x138 [ 39.930662][ T4458] el0t_64_sync_handler+0x84/0xf0 [ 39.931390][ T4458] el0t_64_sync+0x18c/0x190 [ 39.933521][ T4458] ------------[ cut here ]------------ [ 39.934302][ T4458] EA inode 11 i_nlink=2 [ 39.934375][ T4458] WARNING: CPU: 1 PID: 4458 at fs/ext4/xattr.c:1022 ext4_xattr_inode_update_ref+0x42c/0x470 [ 39.936365][ T4458] Modules linked in: [ 39.936974][ T4458] CPU: 1 PID: 4458 Comm: syz.0.17 Not tainted syzkaller #0 [ 39.937929][ T4458] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 39.939424][ T4458] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 39.940538][ T4458] pc : ext4_xattr_inode_update_ref+0x42c/0x470 [ 39.941342][ T4458] lr : ext4_xattr_inode_update_ref+0x42c/0x470 [ 39.942187][ T4458] sp : ffff800021426e00 [ 39.942768][ T4458] x29: ffff800021426ea0 x28: 0000000000000000 x27: dfff800000000000 [ 39.943901][ T4458] x26: 1fffe0001d21781b x25: ffff700004284dc4 x24: 0000000000000000 [ 39.945105][ T4458] x23: ffff800017a8a000 x22: ffff0000e90bbf20 x21: 0000000000000002 [ 39.946240][ T4458] x20: 0000000000000001 x19: ffff0000e90bbee0 x18: ffff800011abbcc0 [ 39.947304][ T4458] x17: 0000000000000000 x16: ffff800008042d90 x15: 0000000000000000 [ 39.948512][ T4458] x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100 [ 39.949756][ T4458] x11: ff00800008191ca8 x10: 0000000000000000 x9 : d162244ee1874900 [ 39.950857][ T4458] x8 : d162244ee1874900 x7 : 0000000000000001 x6 : 0000000000000001 [ 39.952062][ T4458] x5 : ffff800021426898 x4 : ffff8000151a4920 x3 : ffff800008311fcc [ 39.953214][ T4458] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 [ 39.954336][ T4458] Call trace: [ 39.954802][ T4458] ext4_xattr_inode_update_ref+0x42c/0x470 [ 39.955597][ T4458] ext4_xattr_set_entry+0x918/0x15ac [ 39.956347][ T4458] ext4_xattr_ibody_set+0x204/0x600 [ 39.957064][ T4458] ext4_expand_extra_isize_ea+0xd00/0x15cc [ 39.957880][ T4458] __ext4_expand_extra_isize+0x298/0x358 [ 39.958634][ T4458] __ext4_mark_inode_dirty+0x3e4/0x790 [ 39.959432][ T4458] ext4_evict_inode+0xb58/0x1270 [ 39.960134][ T4458] evict+0x3c8/0x810 [ 39.960744][ T4458] iput+0x764/0x7f4 [ 39.961316][ T4458] ext4_process_orphan+0x240/0x2b4 [ 39.962090][ T4458] ext4_orphan_cleanup+0x908/0x104c [ 39.962876][ T4458] ext4_fill_super+0x6440/0x68a8 [ 39.963589][ T4458] get_tree_bdev+0x358/0x544 [ 39.964275][ T4458] ext4_get_tree+0x28/0x38 [ 39.964933][ T4458] vfs_get_tree+0x90/0x274 [ 39.965532][ T4458] do_new_mount+0x228/0x810 [ 39.966181][ T4458] path_mount+0x5b4/0xe78 [ 39.966810][ T4458] __arm64_sys_mount+0x49c/0x584 [ 39.967481][ T4458] invoke_syscall+0x98/0x2bc [ 39.968120][ T4458] el0_svc_common+0x138/0x258 [ 39.968796][ T4458] do_el0_svc+0x58/0x13c [ 39.969444][ T4458] el0_svc+0x58/0x138 [ 39.970038][ T4458] el0t_64_sync_handler+0x84/0xf0 [ 39.970721][ T4458] el0t_64_sync+0x18c/0x190 [ 39.971328][ T4458] irq event stamp: 5411 [ 39.971903][ T4458] hardirqs last enabled at (5411): [] _raw_spin_unlock_irqrestore+0x48/0xac [ 39.973330][ T4458] hardirqs last disabled at (5410): [] _raw_spin_lock_irqsave+0xa4/0xb4 [ 39.974702][ T4458] softirqs last enabled at (3030): [] handle_softirqs+0xaf8/0xc6c [ 39.975939][ T4458] softirqs last disabled at (2905): [] __do_softirq+0x14/0x20 [ 39.977207][ T4458] ---[ end trace 0000000000000000 ]--- [ 39.978814][ T4458] EXT4-fs (loop0): 1 orphan inode deleted [ 39.979699][ T4458] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: writeback. [ 39.988006][ T4421] EXT4-fs (loop0): unmounting filesystem.