[ 9.658411][ T3991] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK [ 9.707891][ T91] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 9.709888][ T1834] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.38' (ED25519) to the list of known hosts. 1970/01/01 00:00:30 parsed 1 programs syzkaller login: [ 31.532269][ T4326] cgroup: Unknown subsys name 'net' [ 31.813765][ T4326] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 32.079491][ T4326] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 36.764693][ T4334] chnl_net:caif_netlink_parms(): no params data found [ 36.782544][ T4334] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.783853][ T4334] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.785517][ T4334] device bridge_slave_0 entered promiscuous mode [ 36.787937][ T4334] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.789201][ T4334] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.791045][ T4334] device bridge_slave_1 entered promiscuous mode [ 36.797489][ T4334] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 36.800009][ T4334] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 36.807681][ T4334] team0: Port device team_slave_0 added [ 36.809549][ T4334] team0: Port device team_slave_1 added [ 36.815136][ T4334] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 36.816310][ T4334] 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. [ 36.820534][ T4334] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 36.823629][ T4334] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 36.824728][ T4334] 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. [ 36.828899][ T4334] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 36.871944][ T4334] device hsr_slave_0 entered promiscuous mode [ 36.920879][ T4334] device hsr_slave_1 entered promiscuous mode [ 36.996230][ T4334] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 37.042102][ T4334] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 37.093050][ T4334] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 37.141902][ T4334] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 37.188714][ T4334] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.189971][ T4334] bridge0: port 2(bridge_slave_1) entered forwarding state [ 37.191496][ T4334] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.192585][ T4334] bridge0: port 1(bridge_slave_0) entered forwarding state [ 37.210403][ T4334] 8021q: adding VLAN 0 to HW filter on device bond0 [ 37.214399][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 37.216953][ T91] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.219039][ T91] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.222493][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 37.226643][ T4334] 8021q: adding VLAN 0 to HW filter on device team0 [ 37.229591][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 37.231681][ T91] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.233104][ T91] bridge0: port 1(bridge_slave_0) entered forwarding state [ 37.236462][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 37.237934][ T91] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.239170][ T91] bridge0: port 2(bridge_slave_1) entered forwarding state [ 37.246669][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 37.248378][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 37.251804][ T1834] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 37.254638][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 37.257375][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 37.259995][ T4334] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 37.315106][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 37.316557][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 37.320045][ T4334] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 37.326563][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 37.333289][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 37.335102][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 37.336639][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 37.339249][ T4334] device veth0_vlan entered promiscuous mode [ 37.343628][ T4334] device veth1_vlan entered promiscuous mode [ 37.349940][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 37.352316][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 37.354027][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 37.356586][ T4334] device veth0_macvtap entered promiscuous mode [ 37.358885][ T4334] device veth1_macvtap entered promiscuous mode [ 37.365947][ T4334] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 37.367301][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 37.369421][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 37.373537][ T4334] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 37.374874][ T91] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 37.377542][ T4334] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 37.379080][ T4334] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 37.381507][ T4334] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 37.383059][ T4334] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 37.692339][ T91] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 37.890200][ T4362] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 37.891846][ T4362] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 37.893190][ T4362] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 37.894714][ T4362] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 37.896160][ T4362] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 37.897478][ T4362] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 37.976981][ T236] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 37.978417][ T236] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 37.980554][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 37.989302][ T236] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 37.991653][ T236] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 37.993383][ T1834] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:00:38 executed programs: 0 [ 39.020116][ T47] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 39.022188][ T47] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 39.023732][ T47] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 39.025607][ T47] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 39.027015][ T47] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 39.028402][ T47] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 39.074470][ T4414] chnl_net:caif_netlink_parms(): no params data found [ 39.089883][ T4414] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.091359][ T4414] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.092976][ T4414] device bridge_slave_0 entered promiscuous mode [ 39.095297][ T4414] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.096543][ T4414] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.098205][ T4414] device bridge_slave_1 entered promiscuous mode [ 39.105087][ T4414] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 39.107601][ T4414] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 39.114979][ T4414] team0: Port device team_slave_0 added [ 39.117056][ T4414] team0: Port device team_slave_1 added [ 39.123622][ T4414] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 39.124881][ T4414] 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. [ 39.129510][ T4414] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 39.132915][ T4414] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 39.134167][ T4414] 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. [ 39.138675][ T4414] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 39.191856][ T4414] device hsr_slave_0 entered promiscuous mode [ 39.230886][ T4414] device hsr_slave_1 entered promiscuous mode [ 39.280734][ T4414] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 39.282207][ T4414] Cannot create hsr debugfs directory [ 40.771891][ T91] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 41.041099][ T4362] Bluetooth: hci0: command 0x0409 tx timeout [ 43.101866][ T91] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 43.130826][ T4362] Bluetooth: hci0: command 0x041b tx timeout [ 43.182720][ T91] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 44.122251][ T4414] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 44.212401][ T4414] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 44.312528][ T4414] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 44.412710][ T4414] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 44.524456][ T4414] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.528968][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 44.530570][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 44.533857][ T4414] 8021q: adding VLAN 0 to HW filter on device team0 [ 44.536466][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 44.538066][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.539586][ T236] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.540716][ T236] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.542828][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.573568][ T1834] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 44.575327][ T1834] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 44.576967][ T1834] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.578200][ T1834] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.582410][ T1834] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 44.585466][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 44.588404][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 44.591001][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 44.592768][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 44.595583][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 44.597389][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 44.600109][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 44.602196][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 44.605645][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 44.607284][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 44.609813][ T4414] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 44.625194][ T91] device hsr_slave_0 left promiscuous mode [ 44.661045][ T91] device hsr_slave_1 left promiscuous mode [ 44.740771][ T91] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 44.742000][ T91] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 44.744959][ T91] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 44.746191][ T91] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 44.747814][ T91] device bridge_slave_1 left promiscuous mode [ 44.749360][ T91] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.801479][ T91] device bridge_slave_0 left promiscuous mode [ 44.802586][ T91] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.940905][ T91] device veth1_macvtap left promiscuous mode [ 44.942034][ T91] device veth0_macvtap left promiscuous mode [ 44.943094][ T91] device veth1_vlan left promiscuous mode [ 44.944120][ T91] device veth0_vlan left promiscuous mode [ 45.210786][ T4362] Bluetooth: hci0: command 0x040f tx timeout [ 47.092058][ T91] team0 (unregistering): Port device team_slave_1 removed [ 47.280698][ T4362] Bluetooth: hci0: command 0x0419 tx timeout [ 47.292473][ T91] team0 (unregistering): Port device team_slave_0 removed [ 47.461119][ T91] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 47.671221][ T91] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 49.241552][ T91] bond0 (unregistering): Released all slaves [ 49.570633][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.572061][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.576124][ T4414] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 49.582745][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 49.584521][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 49.593381][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 49.595056][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 49.596756][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 49.598381][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 49.600697][ T4414] device veth0_vlan entered promiscuous mode [ 49.604163][ T4414] device veth1_vlan entered promiscuous mode [ 49.612105][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 49.613797][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 49.615334][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 49.616875][ T236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 49.619794][ T4414] device veth0_macvtap entered promiscuous mode [ 49.622524][ T4414] device veth1_macvtap entered promiscuous mode [ 49.628094][ T4414] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 49.629311][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 49.632706][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 49.634201][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 49.635843][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 49.638638][ T4414] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 49.640016][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 49.642844][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 49.645595][ T4414] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.647028][ T4414] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.648391][ T4414] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.649917][ T4414] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.675099][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.676495][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.678909][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 49.685284][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.686695][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.688109][ T4367] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 49.869707][ T4478] loop0: detected capacity change from 0 to 32768 [ 49.877102][ T4478] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 49.878562][ T4478] gfs2: fsid=syz:syz: Now mounting FS (format 1801)... [ 49.885083][ T4478] gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 0ms [ 49.887437][ T4341] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 49.888502][ T4341] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 49.904095][ T4341] gfs2: fsid=syz:syz.0: jid=0: Journal head lookup took 15ms [ 49.906542][ T4341] gfs2: fsid=syz:syz.0: jid=0: Done [ 49.907641][ T4478] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 50.110557][ T4414] ------------[ cut here ]------------ [ 50.111750][ T4414] WARNING: CPU: 1 PID: 4414 at include/linux/backing-dev.h:247 __folio_mark_dirty+0x8a0/0xcd8 [ 50.113570][ T4414] Modules linked in: [ 50.114242][ T4414] CPU: 1 PID: 4414 Comm: syz-executor Not tainted syzkaller #0 [ 50.115515][ T4414] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 50.117360][ T4414] pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.118736][ T4414] pc : __folio_mark_dirty+0x8a0/0xcd8 [ 50.119655][ T4414] lr : __folio_mark_dirty+0x8a0/0xcd8 [ 50.120586][ T4414] sp : ffff8000211375e0 [ 50.121309][ T4414] x29: ffff800021137600 x28: 1fffff800065ebd0 x27: dfff800000000000 [ 50.122686][ T4414] x26: 0000000000000000 x25: ffff0000c54d3e90 x24: 0000000000000001 [ 50.124094][ T4414] x23: 0000000000000000 x22: fffffc00032f5e88 x21: 1fffe00018a9a7d2 [ 50.125432][ T4414] x20: ffff0000d2fd8c40 x19: fffffc00032f5e80 x18: ffff800011b9bf60 [ 50.126772][ T4414] x17: ffff80001835b000 x16: ffff8000082d7db8 x15: ffff800017e3c000 [ 50.128101][ T4414] x14: 0000000000000001 x13: 1fffe00018a9a7d2 x12: 0000000000ff0100 [ 50.129472][ T4414] x11: ff0080000870a0f8 x10: 0000000000000000 x9 : ffff80000870a0f8 [ 50.130886][ T4414] x8 : ffff0000c7510000 x7 : 0000000000000000 x6 : 0000000000000000 [ 50.132243][ T4414] x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff800008a58a88 [ 50.133627][ T4414] x2 : ffff0000cf06e060 x1 : 0000000000000000 x0 : 0000000000000000 [ 50.135036][ T4414] Call trace: [ 50.135608][ T4414] __folio_mark_dirty+0x8a0/0xcd8 [ 50.136487][ T4414] mark_buffer_dirty+0x2b8/0x5c0 [ 50.137349][ T4414] gfs2_unpin+0x120/0x8fc [ 50.138102][ T4414] buf_lo_after_commit+0x140/0x188 [ 50.138930][ T4414] gfs2_log_flush+0xc00/0x1b20 [ 50.139724][ T4414] gfs2_kill_sb+0x5c/0xd4 [ 50.140466][ T4414] deactivate_locked_super+0xac/0x120 [ 50.141427][ T4414] deactivate_super+0xe4/0x104 [ 50.142237][ T4414] cleanup_mnt+0x390/0x418 [ 50.142972][ T4414] __cleanup_mnt+0x20/0x30 [ 50.143671][ T4414] task_work_run+0x1ec/0x278 [ 50.144467][ T4414] get_signal+0x111c/0x1304 [ 50.145208][ T4414] do_notify_resume+0x33c/0x2aa4 [ 50.145999][ T4414] el0_svc+0x98/0x128 [ 50.146616][ T4414] el0t_64_sync_handler+0x84/0xf0 [ 50.147493][ T4414] el0t_64_sync+0x18c/0x190 [ 50.148249][ T4414] irq event stamp: 170374 [ 50.148939][ T4414] hardirqs last enabled at (170373): [] folio_memcg_lock+0xe8/0x1f4 [ 50.150442][ T4414] hardirqs last disabled at (170374): [] _raw_spin_lock_irqsave+0xa4/0xb0 [ 50.151937][ T4414] softirqs last enabled at (170254): [] local_bh_enable+0x10/0x34 [ 50.153448][ T4414] softirqs last disabled at (170252): [] local_bh_disable+0x10/0x34 [ 50.154811][ T4414] ---[ end trace 0000000000000000 ]--- [ 50.158411][ T4414] ------------[ cut here ]------------ [ 50.159409][ T4414] WARNING: CPU: 1 PID: 4414 at include/linux/backing-dev.h:247 __folio_start_writeback+0x88c/0xa7c [ 50.161331][ T4414] Modules linked in: [ 50.161988][ T4414] CPU: 1 PID: 4414 Comm: syz-executor Tainted: G W syzkaller #0 [ 50.163545][ T4414] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 50.165285][ T4414] pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.166658][ T4414] pc : __folio_start_writeback+0x88c/0xa7c [ 50.167710][ T4414] lr : __folio_start_writeback+0x88c/0xa7c [ 50.168748][ T4414] sp : ffff800021137080 [ 50.169468][ T4414] x29: ffff800021137160 x28: dfff800000000000 x27: 0000000000000000 [ 50.170857][ T4414] x26: ffff700004226e18 x25: 0000000000000000 x24: ffff0000d2fd8c40 [ 50.172227][ T4414] x23: ffff8000211370e0 x22: ffff0000c54d3ce8 x21: 0000000000000001 [ 50.173597][ T4414] x20: fffffc00032f5e88 x19: fffffc00032f5e80 x18: ffff800011b9bf60 [ 50.174994][ T4414] x17: ffff80001835b000 x16: ffff8000082d7db8 x15: 0000000000000000 [ 50.176333][ T4414] x14: 0000000000000001 x13: 1fffff800065ebd0 x12: 0000000000ff0100 [ 50.177688][ T4414] x11: ff0080000870c604 x10: 0000000000000000 x9 : ffff80000870c604 [ 50.179066][ T4414] x8 : ffff0000c7510000 x7 : ffff80000870c070 x6 : 0000000000000000 [ 50.180376][ T4414] x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000870c0b0 [ 50.181772][ T4414] x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 [ 50.183115][ T4414] Call trace: [ 50.183711][ T4414] __folio_start_writeback+0x88c/0xa7c [ 50.184619][ T4414] set_page_writeback+0x5c/0x7c [ 50.185498][ T4414] gfs2_aspace_writepage+0x514/0x6dc [ 50.186447][ T4414] __gfs2_writepage+0x70/0x184 [ 50.187297][ T4414] write_cache_pages+0x74c/0xde8 [ 50.188155][ T4414] gfs2_ail1_flush+0x7c4/0xa14 [ 50.188959][ T4414] empty_ail1_list+0x130/0x214 [ 50.189900][ T4414] gfs2_log_flush+0x12b4/0x1b20 [ 50.190777][ T4414] gfs2_kill_sb+0x5c/0xd4 [ 50.191532][ T4414] deactivate_locked_super+0xac/0x120 [ 50.192464][ T4414] deactivate_super+0xe4/0x104 [ 50.193258][ T4414] cleanup_mnt+0x390/0x418 [ 50.193994][ T4414] __cleanup_mnt+0x20/0x30 [ 50.194723][ T4414] task_work_run+0x1ec/0x278 [ 50.195516][ T4414] get_signal+0x111c/0x1304 [ 50.196344][ T4414] do_notify_resume+0x33c/0x2aa4 [ 50.197167][ T4414] el0_svc+0x98/0x128 [ 50.197897][ T4414] el0t_64_sync_handler+0x84/0xf0 [ 50.198807][ T4414] el0t_64_sync+0x18c/0x190 [ 50.199606][ T4414] irq event stamp: 170398 [ 50.200368][ T4414] hardirqs last enabled at (170397): [] folio_memcg_lock+0xe8/0x1f4 [ 50.202165][ T4414] hardirqs last disabled at (170398): [] _raw_spin_lock_irqsave+0xa4/0xb0 [ 50.203794][ T4414] softirqs last enabled at (170254): [] local_bh_enable+0x10/0x34 [ 50.205398][ T4414] softirqs last disabled at (170252): [] local_bh_disable+0x10/0x34 [ 50.207118][ T4414] ---[ end trace 0000000000000000 ]--- [ 50.220701][ C0] ------------[ cut here ]------------ [ 50.221834][ C0] WARNING: CPU: 0 PID: 15 at include/linux/backing-dev.h:247 __folio_end_writeback+0x7d0/0x9cc [ 50.223421][ C0] Modules linked in: [ 50.224094][ C0] CPU: 0 PID: 15 Comm: ksoftirqd/0 Tainted: G W syzkaller #0 [ 50.225634][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 50.227265][ C0] pstate: 424000c5 (nZcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 50.228631][ C0] pc : __folio_end_writeback+0x7d0/0x9cc [ 50.229660][ C0] lr : __folio_end_writeback+0x7d0/0x9cc [ 50.230699][ C0] sp : ffff80001ca27970 [ 50.231434][ C0] x29: ffff80001ca27990 x28: dfff800000000000 x27: ffff0000c54d3ce8 [ 50.232871][ C0] x26: 0000000000000000 x25: 05ffd60000002052 x24: 1fffff80006d5678 [ 50.234275][ C0] x23: 0000000000000001 x22: ffff0000cabb42a0 x21: ffff0000cabb42a8 [ 50.235715][ C0] x20: 0000000000000001 x19: fffffc00036ab3c0 x18: ffff800011b9bf60 [ 50.237185][ C0] x17: 1fffe00033ea637e x16: ffff8000082d7db8 x15: 0000000000000000 [ 50.238623][ C0] x14: 0000000000000003 x13: 1ffff00003944f20 x12: 0000000000ff0100 [ 50.240090][ C0] x11: ff0080000870bb7c x10: 0000000000000000 x9 : ffff80000870bb7c [ 50.241531][ C0] x8 : ffff0000c09b3780 x7 : 0000000000000000 x6 : 0000000000000000 [ 50.243006][ C0] x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000010 [ 50.244456][ C0] x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000 [ 50.245888][ C0] Call trace: [ 50.246452][ C0] __folio_end_writeback+0x7d0/0x9cc [ 50.247389][ C0] folio_end_writeback+0x12c/0x410 [ 50.248275][ C0] end_page_writeback+0x58/0x74 [ 50.249084][ C0] end_buffer_async_write+0x32c/0x4f4 [ 50.249993][ C0] end_bio_bh_io_sync+0xb0/0x1dc [ 50.250801][ C0] bio_endio+0x750/0x794 [ 50.251590][ C0] blk_update_request+0x49c/0xbec [ 50.252440][ C0] blk_mq_end_request+0x54/0x88 [ 50.253335][ C0] lo_complete_rq+0x1ec/0x250 [ 50.254149][ C0] blk_done_softirq+0x11c/0x168 [ 50.254984][ C0] handle_softirqs+0x318/0xc60 [ 50.255829][ C0] run_ksoftirqd+0x7c/0x2ac [ 50.256618][ C0] smpboot_thread_fn+0x4b0/0x964 [ 50.257489][ C0] kthread+0x250/0x2d8 [ 50.258216][ C0] ret_from_fork+0x10/0x20 [ 50.258988][ C0] irq event stamp: 412703 [ 50.259741][ C0] hardirqs last enabled at (412702): [] folio_memcg_lock+0xe8/0x1f4 [ 50.261456][ C0] hardirqs last disabled at (412703): [] _raw_spin_lock_irqsave+0xa4/0xb0 [ 50.263273][ C0] softirqs last enabled at (412688): [] handle_softirqs+0xaec/0xc60 [ 50.264929][ C0] softirqs last disabled at (412695): [] run_ksoftirqd+0x7c/0x2ac [ 50.266593][ C0] ---[ end trace 0000000000000000 ]---