Warning: Permanently added '10.128.0.98' (ED25519) to the list of known hosts. 1970/01/01 00:00:36 parsed 1 programs syzkaller login: [ 37.982474][ T4326] cgroup: Unknown subsys name 'net' [ 38.243900][ T4326] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 38.537148][ T4326] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 42.405327][ T4345] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 42.406789][ T4345] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 42.408132][ T4345] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 42.409655][ T4345] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 42.410930][ T4345] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 42.412290][ T4348] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 42.865253][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 42.866499][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 42.871430][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 42.875526][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 42.876733][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 42.878269][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 43.241352][ T4388] chnl_net:caif_netlink_parms(): no params data found [ 43.257741][ T4388] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.258950][ T4388] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.260437][ T4388] device bridge_slave_0 entered promiscuous mode [ 43.267655][ T4388] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.268795][ T4388] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.270245][ T4388] device bridge_slave_1 entered promiscuous mode [ 43.277075][ T4388] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 43.279338][ T4388] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 43.286074][ T4388] team0: Port device team_slave_0 added [ 43.287752][ T4388] team0: Port device team_slave_1 added [ 43.293300][ T4388] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 43.294322][ T4388] 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. [ 43.298119][ T4388] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 43.300429][ T4388] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 43.303927][ T4388] 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. [ 43.307833][ T4388] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 43.382535][ T4388] device hsr_slave_0 entered promiscuous mode [ 43.441684][ T4388] device hsr_slave_1 entered promiscuous mode [ 43.502301][ T4388] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 43.542184][ T4388] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 43.592419][ T4388] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 43.641781][ T4388] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 43.709502][ T4388] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.710742][ T4388] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.712144][ T4388] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.713264][ T4388] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.730582][ T4388] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.746613][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.748635][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.750159][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.755083][ T4388] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.758222][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.759840][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.760784][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.764645][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.766128][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.767239][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.781040][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.783458][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.784968][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 43.786461][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 43.789342][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 43.793853][ T4388] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 43.844522][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 43.845810][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 43.848995][ T4388] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 43.855839][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 43.872089][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 43.873723][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 43.875009][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 43.877263][ T4388] device veth0_vlan entered promiscuous mode [ 43.880041][ T4388] device veth1_vlan entered promiscuous mode [ 43.886799][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 43.888346][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 43.890446][ T4388] device veth0_macvtap entered promiscuous mode [ 43.894228][ T4388] device veth1_macvtap entered promiscuous mode [ 43.898626][ T4388] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 43.899740][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 43.902200][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 43.903586][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 43.905095][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 43.914372][ T4388] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 43.915615][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 43.917145][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 43.919547][ T4388] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 43.920781][ T4388] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 43.922660][ T4388] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 43.923994][ T4388] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:00:45 executed programs: 0 [ 45.080740][ T4345] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 45.082251][ T4345] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 45.083671][ T47] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 45.085180][ T47] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 45.086498][ T47] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 45.087768][ T47] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 45.426042][ T4446] chnl_net:caif_netlink_parms(): no params data found [ 45.441743][ T4446] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.442932][ T4446] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.444359][ T4446] device bridge_slave_0 entered promiscuous mode [ 45.446163][ T4446] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.447277][ T4446] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.448675][ T4446] device bridge_slave_1 entered promiscuous mode [ 45.457188][ T4446] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 45.459497][ T4446] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 45.466659][ T4446] team0: Port device team_slave_0 added [ 45.468426][ T4446] team0: Port device team_slave_1 added [ 45.475721][ T4446] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 45.476849][ T4446] 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. [ 45.480813][ T4446] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 45.483400][ T4446] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 45.484527][ T4446] 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. [ 45.488293][ T4446] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 45.532797][ T4446] device hsr_slave_0 entered promiscuous mode [ 45.571747][ T4446] device hsr_slave_1 entered promiscuous mode [ 45.641614][ T4446] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 45.642957][ T4446] Cannot create hsr debugfs directory [ 45.943689][ T255] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 47.131886][ T4348] Bluetooth: hci0: command 0x0409 tx timeout [ 48.872549][ T255] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 49.211785][ T4348] Bluetooth: hci0: command 0x041b tx timeout [ 49.212498][ T255] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 49.303135][ T255] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.284351][ T4446] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.393442][ T4446] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.432436][ T4446] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.492416][ T4446] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.621955][ T4446] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.625149][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 50.626585][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.628790][ T4446] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.631024][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 50.633994][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.635414][ T1832] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.636563][ T1832] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.638128][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 50.665207][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 50.666731][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 50.668411][ T1832] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.669394][ T1832] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.671976][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 50.674553][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 50.677047][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 50.678630][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.680166][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.682925][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 50.684573][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.687409][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 50.688940][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.691905][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 50.693403][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.696498][ T4446] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.746101][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 50.747352][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 50.750063][ T4446] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 50.755513][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 50.757085][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.793894][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.795287][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.796665][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.797979][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.800131][ T4446] device veth0_vlan entered promiscuous mode [ 50.806133][ T4446] device veth1_vlan entered promiscuous mode [ 50.812192][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.813656][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.814929][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.816506][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.819421][ T4446] device veth0_macvtap entered promiscuous mode [ 50.821997][ T4446] device veth1_macvtap entered promiscuous mode [ 50.825947][ T4446] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 50.827530][ T4446] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 50.829396][ T4446] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.830600][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.832907][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.834351][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 50.835788][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.838016][ T4446] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 50.839665][ T4446] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 50.842203][ T4446] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.843786][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 50.845310][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.848711][ T255] device hsr_slave_0 left promiscuous mode [ 50.901755][ T255] device hsr_slave_1 left promiscuous mode [ 50.981597][ T255] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 50.982791][ T255] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 50.984274][ T255] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 50.985462][ T255] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 50.986813][ T255] device bridge_slave_1 left promiscuous mode [ 50.988046][ T255] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.042498][ T255] device bridge_slave_0 left promiscuous mode [ 51.043529][ T255] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.161949][ T255] device veth1_macvtap left promiscuous mode [ 51.162931][ T255] device veth0_macvtap left promiscuous mode [ 51.163969][ T255] device veth1_vlan left promiscuous mode [ 51.164834][ T255] device veth0_vlan left promiscuous mode [ 51.291542][ T47] Bluetooth: hci0: command 0x040f tx timeout [ 52.842538][ T255] team0 (unregistering): Port device team_slave_1 removed [ 53.022057][ T255] team0 (unregistering): Port device team_slave_0 removed [ 53.221914][ T255] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 53.371532][ T47] Bluetooth: hci0: command 0x0419 tx timeout [ 53.441873][ T255] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 55.922333][ T255] bond0 (unregistering): Released all slaves [ 56.163792][ T4446] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.165146][ T4446] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.166516][ T4446] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.167856][ T4446] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.193291][ T39] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.194477][ T39] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.197135][ T1832] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 56.200461][ T39] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.203428][ T39] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.205246][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 56.250696][ T4524] loop0: detected capacity change from 0 to 512 [ 56.268164][ T4524] [ 56.268559][ T4524] ====================================================== [ 56.269667][ T4524] WARNING: possible circular locking dependency detected [ 56.270871][ T4524] syzkaller #0 Not tainted [ 56.271601][ T4524] ------------------------------------------------------ [ 56.272697][ T4524] syz.0.17/4524 is trying to acquire lock: [ 56.273603][ T4524] ffff0000d3d90b98 (&sbi->s_writepages_rwsem){.+.+}-{0:0}, at: ext4_writepages+0x188/0x284c [ 56.275182][ T4524] [ 56.275182][ T4524] but task is already holding lock: [ 56.276276][ T4524] ffff0000e51c5b10 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x37c/0x790 [ 56.277734][ T4524] [ 56.277734][ T4524] which lock already depends on the new lock. [ 56.277734][ T4524] [ 56.279271][ T4524] [ 56.279271][ T4524] the existing dependency chain (in reverse order) is: [ 56.280627][ T4524] [ 56.280627][ T4524] -> #2 (&ei->xattr_sem){++++}-{3:3}: [ 56.281691][ T4524] down_read+0x64/0x304 [ 56.282475][ T4524] ext4_setattr+0x7c4/0x150c [ 56.283279][ T4524] notify_change+0xb0c/0xdcc [ 56.284067][ T4524] chown_common+0x414/0x574 [ 56.284786][ T4524] do_fchownat+0x158/0x268 [ 56.285524][ T4524] __arm64_sys_fchownat+0xb8/0xd4 [ 56.286374][ T4524] invoke_syscall+0x98/0x2bc [ 56.287121][ T4524] el0_svc_common+0x138/0x258 [ 56.287870][ T4524] do_el0_svc+0x58/0x13c [ 56.288593][ T4524] el0_svc+0x58/0x138 [ 56.289259][ T4524] el0t_64_sync_handler+0x84/0xf0 [ 56.290030][ T4524] el0t_64_sync+0x18c/0x190 [ 56.290744][ T4524] [ 56.290744][ T4524] -> #1 (jbd2_handle){++++}-{0:0}: [ 56.291833][ T4524] start_this_handle+0xfe0/0x122c [ 56.292698][ T4524] jbd2__journal_start+0x288/0x51c [ 56.293516][ T4524] __ext4_journal_start_sb+0x2fc/0x674 [ 56.294336][ T4524] ext4_writepages+0xa28/0x284c [ 56.295089][ T4524] do_writepages+0x2c0/0x4fc [ 56.295837][ T4524] __writeback_single_inode+0x164/0x157c [ 56.296801][ T4524] writeback_sb_inodes+0x824/0x1404 [ 56.297657][ T4524] __writeback_inodes_wb+0x110/0x394 [ 56.298516][ T4524] wb_writeback+0x414/0xfb0 [ 56.299272][ T4524] wb_workfn+0xac0/0xd98 [ 56.300010][ T4524] process_one_work+0x7f4/0x13a8 [ 56.300821][ T4524] worker_thread+0x8c8/0xfbc [ 56.301551][ T4524] kthread+0x250/0x2d8 [ 56.302228][ T4524] ret_from_fork+0x10/0x20 [ 56.302984][ T4524] [ 56.302984][ T4524] -> #0 (&sbi->s_writepages_rwsem){.+.+}-{0:0}: [ 56.304211][ T4524] __lock_acquire+0x293c/0x6544 [ 56.304996][ T4524] lock_acquire+0x20c/0x644 [ 56.305766][ T4524] percpu_down_read+0x70/0x2a8 [ 56.306586][ T4524] ext4_writepages+0x188/0x284c [ 56.307411][ T4524] do_writepages+0x2c0/0x4fc [ 56.308157][ T4524] __writeback_single_inode+0x164/0x157c [ 56.309017][ T4524] writeback_single_inode+0x1c0/0x720 [ 56.309873][ T4524] write_inode_now+0x144/0x1b0 [ 56.310643][ T4524] iput+0x5cc/0x7f4 [ 56.311260][ T4524] ext4_xattr_block_set+0x17a4/0x2810 [ 56.312112][ T4524] ext4_expand_extra_isize_ea+0xcb8/0x15cc [ 56.312993][ T4524] __ext4_expand_extra_isize+0x298/0x358 [ 56.313874][ T4524] __ext4_mark_inode_dirty+0x3e4/0x790 [ 56.314731][ T4524] ext4_evict_inode+0xb58/0x1270 [ 56.315569][ T4524] evict+0x3c8/0x810 [ 56.316249][ T4524] iput+0x764/0x7f4 [ 56.316881][ T4524] ext4_process_orphan+0x240/0x2b4 [ 56.317736][ T4524] ext4_orphan_cleanup+0x908/0x104c [ 56.318553][ T4524] ext4_fill_super+0x6440/0x68a8 [ 56.319336][ T4524] get_tree_bdev+0x358/0x544 [ 56.320127][ T4524] ext4_get_tree+0x28/0x38 [ 56.320892][ T4524] vfs_get_tree+0x90/0x274 [ 56.321576][ T4524] do_new_mount+0x228/0x810 [ 56.322325][ T4524] path_mount+0x5b4/0xe78 [ 56.323043][ T4524] __arm64_sys_mount+0x49c/0x584 [ 56.323851][ T4524] invoke_syscall+0x98/0x2bc [ 56.324658][ T4524] el0_svc_common+0x138/0x258 [ 56.325391][ T4524] do_el0_svc+0x58/0x13c [ 56.326078][ T4524] el0_svc+0x58/0x138 [ 56.326728][ T4524] el0t_64_sync_handler+0x84/0xf0 [ 56.327515][ T4524] el0t_64_sync+0x18c/0x190 [ 56.328203][ T4524] [ 56.328203][ T4524] other info that might help us debug this: [ 56.328203][ T4524] [ 56.329596][ T4524] Chain exists of: [ 56.329596][ T4524] &sbi->s_writepages_rwsem --> jbd2_handle --> &ei->xattr_sem [ 56.329596][ T4524] [ 56.331504][ T4524] Possible unsafe locking scenario: [ 56.331504][ T4524] [ 56.332519][ T4524] CPU0 CPU1 [ 56.333299][ T4524] ---- ---- [ 56.334179][ T4524] lock(&ei->xattr_sem); [ 56.334855][ T4524] lock(jbd2_handle); [ 56.335848][ T4524] lock(&ei->xattr_sem); [ 56.336838][ T4524] lock(&sbi->s_writepages_rwsem); [ 56.337651][ T4524] [ 56.337651][ T4524] *** DEADLOCK *** [ 56.337651][ T4524] [ 56.338830][ T4524] 3 locks held by syz.0.17/4524: [ 56.339577][ T4524] #0: ffff0000dc2360e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1a4/0x804 [ 56.341076][ T4524] #1: ffff0000dc236650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x3dc/0x1270 [ 56.342528][ T4524] #2: ffff0000e51c5b10 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x37c/0x790 [ 56.343985][ T4524] [ 56.343985][ T4524] stack backtrace: [ 56.344792][ T4524] CPU: 1 PID: 4524 Comm: syz.0.17 Not tainted syzkaller #0 [ 56.345772][ T4524] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 56.347247][ T4524] Call trace: [ 56.347737][ T4524] dump_backtrace+0x1c8/0x1f4 [ 56.348419][ T4524] show_stack+0x2c/0x3c [ 56.349075][ T4524] __dump_stack+0x30/0x40 [ 56.349694][ T4524] dump_stack_lvl+0xf8/0x160 [ 56.350413][ T4524] dump_stack+0x1c/0x5c [ 56.351052][ T4524] print_circular_bug+0x148/0x1b0 [ 56.351770][ T4524] check_noncircular+0x240/0x2d4 [ 56.352518][ T4524] __lock_acquire+0x293c/0x6544 [ 56.353208][ T4524] lock_acquire+0x20c/0x644 [ 56.353836][ T4524] percpu_down_read+0x70/0x2a8 [ 56.354547][ T4524] ext4_writepages+0x188/0x284c [ 56.355359][ T4524] do_writepages+0x2c0/0x4fc [ 56.356029][ T4524] __writeback_single_inode+0x164/0x157c [ 56.356894][ T4524] writeback_single_inode+0x1c0/0x720 [ 56.357700][ T4524] write_inode_now+0x144/0x1b0 [ 56.358476][ T4524] iput+0x5cc/0x7f4 [ 56.359032][ T4524] ext4_xattr_block_set+0x17a4/0x2810 [ 56.359846][ T4524] ext4_expand_extra_isize_ea+0xcb8/0x15cc [ 56.360750][ T4524] __ext4_expand_extra_isize+0x298/0x358 [ 56.361585][ T4524] __ext4_mark_inode_dirty+0x3e4/0x790 [ 56.362438][ T4524] ext4_evict_inode+0xb58/0x1270 [ 56.363225][ T4524] evict+0x3c8/0x810 [ 56.363856][ T4524] iput+0x764/0x7f4 [ 56.364474][ T4524] ext4_process_orphan+0x240/0x2b4 [ 56.365226][ T4524] ext4_orphan_cleanup+0x908/0x104c [ 56.365946][ T4524] ext4_fill_super+0x6440/0x68a8 [ 56.366664][ T4524] get_tree_bdev+0x358/0x544 [ 56.367373][ T4524] ext4_get_tree+0x28/0x38 [ 56.368026][ T4524] vfs_get_tree+0x90/0x274 [ 56.368714][ T4524] do_new_mount+0x228/0x810 [ 56.369434][ T4524] path_mount+0x5b4/0xe78 [ 56.370035][ T4524] __arm64_sys_mount+0x49c/0x584 [ 56.370768][ T4524] invoke_syscall+0x98/0x2bc [ 56.371491][ T4524] el0_svc_common+0x138/0x258 [ 56.372219][ T4524] do_el0_svc+0x58/0x13c [ 56.372891][ T4524] el0_svc+0x58/0x138 [ 56.373468][ T4524] el0t_64_sync_handler+0x84/0xf0 [ 56.374246][ T4524] el0t_64_sync+0x18c/0x190 [ 56.376934][ T4524] ------------[ cut here ]------------ [ 56.377765][ T4524] EA inode 11 i_nlink=2 [ 56.377832][ T4524] WARNING: CPU: 1 PID: 4524 at fs/ext4/xattr.c:1022 ext4_xattr_inode_update_ref+0x42c/0x470 [ 56.379787][ T4524] Modules linked in: [ 56.380387][ T4524] CPU: 1 PID: 4524 Comm: syz.0.17 Not tainted syzkaller #0 [ 56.381423][ T4524] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 56.382973][ T4524] pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 56.384199][ T4524] pc : ext4_xattr_inode_update_ref+0x42c/0x470 [ 56.385106][ T4524] lr : ext4_xattr_inode_update_ref+0x42c/0x470 [ 56.385963][ T4524] sp : ffff8000212b6e00 [ 56.386576][ T4524] x29: ffff8000212b6ea0 x28: 0000000000000000 x27: dfff800000000000 [ 56.387721][ T4524] x26: 1fffe0001ca2f095 x25: ffff700004256dc4 x24: 0000000000000000 [ 56.388902][ T4524] x23: ffff800017a8a000 x22: ffff0000e51782f0 x21: 0000000000000002 [ 56.390127][ T4524] x20: 0000000000000001 x19: ffff0000e51782b0 x18: ffff800011abbcc0 [ 56.391330][ T4524] x17: 0000000000000000 x16: ffff800008042d90 x15: 0000000000000000 [ 56.392549][ T4524] x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100 [ 56.393783][ T4524] x11: ff00800008191ca8 x10: 0000000000000000 x9 : d8e9bfcc7fc3f800 [ 56.395037][ T4524] x8 : d8e9bfcc7fc3f800 x7 : 0000000000000001 x6 : 0000000000000001 [ 56.396237][ T4524] x5 : ffff8000212b6898 x4 : ffff8000151a4920 x3 : ffff80000852e538 [ 56.397449][ T4524] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 [ 56.398710][ T4524] Call trace: [ 56.399229][ T4524] ext4_xattr_inode_update_ref+0x42c/0x470 [ 56.400182][ T4524] ext4_xattr_set_entry+0x918/0x15ac [ 56.401028][ T4524] ext4_xattr_ibody_set+0x204/0x600 [ 56.401861][ T4524] ext4_expand_extra_isize_ea+0xd00/0x15cc [ 56.402831][ T4524] __ext4_expand_extra_isize+0x298/0x358 [ 56.403752][ T4524] __ext4_mark_inode_dirty+0x3e4/0x790 [ 56.404645][ T4524] ext4_evict_inode+0xb58/0x1270 [ 56.405397][ T4524] evict+0x3c8/0x810 [ 56.405990][ T4524] iput+0x764/0x7f4 [ 56.406578][ T4524] ext4_process_orphan+0x240/0x2b4 [ 56.407322][ T4524] ext4_orphan_cleanup+0x908/0x104c [ 56.408055][ T4524] ext4_fill_super+0x6440/0x68a8 [ 56.408778][ T4524] get_tree_bdev+0x358/0x544 [ 56.409473][ T4524] ext4_get_tree+0x28/0x38 [ 56.410100][ T4524] vfs_get_tree+0x90/0x274 [ 56.410800][ T4524] do_new_mount+0x228/0x810 [ 56.411535][ T4524] path_mount+0x5b4/0xe78 [ 56.412161][ T4524] __arm64_sys_mount+0x49c/0x584 [ 56.412940][ T4524] invoke_syscall+0x98/0x2bc [ 56.413660][ T4524] el0_svc_common+0x138/0x258 [ 56.414373][ T4524] do_el0_svc+0x58/0x13c [ 56.414997][ T4524] el0_svc+0x58/0x138 [ 56.415591][ T4524] el0t_64_sync_handler+0x84/0xf0 [ 56.416341][ T4524] el0t_64_sync+0x18c/0x190 [ 56.417027][ T4524] irq event stamp: 4353 [ 56.417652][ T4524] hardirqs last enabled at (4353): [] _raw_spin_unlock_irqrestore+0x48/0xac [ 56.419118][ T4524] hardirqs last disabled at (4352): [] _raw_spin_lock_irqsave+0xa4/0xb4 [ 56.420524][ T4524] softirqs last enabled at (4272): [] handle_softirqs+0xaf8/0xc6c [ 56.421930][ T4524] softirqs last disabled at (4255): [] __do_softirq+0x14/0x20 [ 56.423407][ T4524] ---[ end trace 0000000000000000 ]--- [ 56.425850][ T4524] EXT4-fs (loop0): 1 orphan inode deleted [ 56.426715][ T4524] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. [ 56.430749][ T4446] EXT4-fs (loop0): unmounting filesystem.