Warning: Permanently added '10.128.0.67' (ED25519) to the list of known hosts. 2025/10/08 17:21:25 parsed 1 programs [ 80.210289][ T4270] cgroup: Unknown subsys name 'net' [ 80.373535][ T4270] cgroup: Unknown subsys name 'rlimit' [ 81.924519][ T4270] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 84.713745][ T4309] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 84.722231][ T4309] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 84.730370][ T4309] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 84.739908][ T4309] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 84.747723][ T4309] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 84.755066][ T4309] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 84.976485][ T33] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.984712][ T33] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.000425][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 85.014612][ T33] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.023086][ T33] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.033353][ T33] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 86.689255][ T14] cfg80211: failed to load regulatory.db [ 86.721296][ T4347] chnl_net:caif_netlink_parms(): no params data found [ 86.853195][ T4347] bridge0: port 1(bridge_slave_0) entered blocking state [ 86.861279][ T4347] bridge0: port 1(bridge_slave_0) entered disabled state [ 86.869820][ T4347] device bridge_slave_0 entered promiscuous mode [ 86.880176][ T4347] bridge0: port 2(bridge_slave_1) entered blocking state [ 86.887471][ T4347] bridge0: port 2(bridge_slave_1) entered disabled state [ 86.895949][ T4347] device bridge_slave_1 entered promiscuous mode [ 86.925531][ T4347] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 86.937482][ T4347] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 86.972337][ T4347] team0: Port device team_slave_0 added [ 86.981217][ T4347] team0: Port device team_slave_1 added [ 87.006660][ T4347] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 87.013991][ T4347] 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. [ 87.040097][ T4347] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 87.054826][ T4347] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 87.061899][ T4347] 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. [ 87.088151][ T4347] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 87.135106][ T4347] device hsr_slave_0 entered promiscuous mode [ 87.142167][ T4347] device hsr_slave_1 entered promiscuous mode [ 87.318084][ T4347] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 87.329493][ T4347] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 87.340579][ T4347] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 87.364906][ T4347] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 87.447213][ T4347] 8021q: adding VLAN 0 to HW filter on device bond0 [ 87.474883][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 87.484814][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.499047][ T4347] 8021q: adding VLAN 0 to HW filter on device team0 [ 87.521562][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 87.531396][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 87.540739][ T4322] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.548408][ T4322] bridge0: port 1(bridge_slave_0) entered forwarding state [ 87.561546][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 87.569892][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 87.579100][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 87.588836][ T4322] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.596417][ T4322] bridge0: port 2(bridge_slave_1) entered forwarding state [ 87.622022][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 87.635093][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 87.646529][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 87.656559][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 87.665834][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 87.688781][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 87.698213][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 87.710106][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 87.719208][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 87.732013][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 87.740805][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 87.761934][ T4347] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 88.014780][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 88.022333][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 88.035831][ T4347] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 88.054321][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 88.063615][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 88.084561][ T4347] device veth0_vlan entered promiscuous mode [ 88.093866][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 88.103170][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 88.112796][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 88.121303][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 88.138540][ T4347] device veth1_vlan entered promiscuous mode [ 88.160931][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 88.169736][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 88.179319][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 88.191125][ T4347] device veth0_macvtap entered promiscuous mode [ 88.201851][ T4347] device veth1_macvtap entered promiscuous mode [ 88.220118][ T4347] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 88.228660][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 88.238596][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 88.252086][ T4347] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 88.261105][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 88.269973][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 88.281760][ T4347] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.291093][ T4347] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.300725][ T4347] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.309901][ T4347] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.458330][ T75] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2025/10/08 17:21:35 executed programs: 0 [ 88.724952][ T4309] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 88.733901][ T4309] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 88.743712][ T4309] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 88.752508][ T4309] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 88.761489][ T4309] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 88.769247][ T4309] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 88.911187][ T4381] chnl_net:caif_netlink_parms(): no params data found [ 88.964787][ T4381] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.972596][ T4381] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.981113][ T4381] device bridge_slave_0 entered promiscuous mode [ 88.989925][ T4381] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.997288][ T4381] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.005741][ T4381] device bridge_slave_1 entered promiscuous mode [ 89.032789][ T4381] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 89.044484][ T4381] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 89.071748][ T4381] team0: Port device team_slave_0 added [ 89.079848][ T4381] team0: Port device team_slave_1 added [ 89.101777][ T4381] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 89.109065][ T4381] 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. [ 89.135116][ T4381] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 89.147399][ T4381] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 89.154392][ T4381] 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. [ 89.181175][ T4381] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 89.218947][ T4381] device hsr_slave_0 entered promiscuous mode [ 89.226565][ T4381] device hsr_slave_1 entered promiscuous mode [ 89.233825][ T4381] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 89.241931][ T4381] Cannot create hsr debugfs directory [ 90.709197][ T75] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 90.848020][ T4309] Bluetooth: hci0: command 0x0409 tx timeout [ 92.927304][ T47] Bluetooth: hci0: command 0x041b tx timeout [ 92.942515][ T75] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.012529][ T75] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.887464][ T75] device hsr_slave_0 left promiscuous mode [ 93.896172][ T75] device hsr_slave_1 left promiscuous mode [ 93.906328][ T75] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 93.914740][ T75] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 93.925780][ T75] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 93.933565][ T75] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 93.944352][ T75] device bridge_slave_1 left promiscuous mode [ 93.952170][ T75] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.970267][ T75] device bridge_slave_0 left promiscuous mode [ 93.976677][ T75] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.010630][ T75] device veth1_macvtap left promiscuous mode [ 94.017193][ T75] device veth0_macvtap left promiscuous mode [ 94.023574][ T75] device veth1_vlan left promiscuous mode [ 94.032672][ T75] device veth0_vlan left promiscuous mode [ 94.451502][ T75] team0 (unregistering): Port device team_slave_1 removed [ 94.482824][ T75] team0 (unregistering): Port device team_slave_0 removed [ 94.513567][ T75] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 94.550937][ T75] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 94.846113][ T75] bond0 (unregistering): Released all slaves [ 94.924170][ T4381] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 94.933490][ T4381] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 94.945513][ T4381] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 94.955557][ T4381] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 95.008182][ T4309] Bluetooth: hci0: command 0x040f tx timeout [ 95.047940][ T4381] 8021q: adding VLAN 0 to HW filter on device bond0 [ 95.061141][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 95.069496][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 95.080686][ T4381] 8021q: adding VLAN 0 to HW filter on device team0 [ 95.094672][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.104320][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.113721][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.120946][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.137194][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 95.150337][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.160078][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.169144][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.176259][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.189555][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 95.209893][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 95.218986][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 95.228900][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 95.237698][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 95.253532][ T4381] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 95.264862][ T4381] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 95.278287][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 95.287357][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 95.296036][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 95.305613][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 95.315312][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 95.323941][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 95.332648][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 95.543130][ T51] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 95.551312][ T51] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 95.563405][ T4381] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 95.584831][ T51] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 95.593775][ T51] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 95.615523][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 95.624305][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 95.633931][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 95.642379][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 95.654415][ T4381] device veth0_vlan entered promiscuous mode [ 95.665797][ T4381] device veth1_vlan entered promiscuous mode [ 95.684578][ T51] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 95.693344][ T51] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 95.701932][ T51] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 95.710828][ T51] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 95.723455][ T4381] device veth0_macvtap entered promiscuous mode [ 95.734374][ T4381] device veth1_macvtap entered promiscuous mode [ 95.752422][ T4381] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 95.763450][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 95.771982][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 95.780568][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 95.789995][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 95.801458][ T4381] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 95.812457][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 95.821180][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 95.832282][ T4381] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.842139][ T4381] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.851052][ T4381] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.860863][ T4381] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 95.913114][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 95.941422][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 95.953619][ T51] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready 2025/10/08 17:21:43 executed programs: 2 [ 95.963604][ T51] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 95.972507][ T51] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 95.982637][ T4322] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 96.041887][ T4431] loop0: detected capacity change from 0 to 2048 [ 96.055275][ T4431] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 96.071675][ T4431] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 96.084214][ T4431] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 96.103994][ T4431] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 96.146245][ T27] audit: type=1800 audit(1759944103.269:2): pid=4431 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.17" name="file1" dev="loop0" ino=1346 res=0 errno=0 [ 96.339192][ T4431] [ 96.341580][ T4431] ============================================ [ 96.347747][ T4431] WARNING: possible recursive locking detected [ 96.353918][ T4431] syzkaller #0 Not tainted [ 96.358461][ T4431] -------------------------------------------- [ 96.364633][ T4431] syz.0.17/4431 is trying to acquire lock: [ 96.370884][ T4431] ffff88802ab5cd28 (&sbi->s_alloc_mutex){+.+.}-{3:3}, at: udf_free_blocks+0x8f6/0x16c0 [ 96.380606][ T4431] [ 96.380606][ T4431] but task is already holding lock: [ 96.387992][ T4431] ffff88802ab5cd28 (&sbi->s_alloc_mutex){+.+.}-{3:3}, at: udf_new_block+0xe73/0x1a20 [ 96.397523][ T4431] [ 96.397523][ T4431] other info that might help us debug this: [ 96.405599][ T4431] Possible unsafe locking scenario: [ 96.405599][ T4431] [ 96.413076][ T4431] CPU0 [ 96.416359][ T4431] ---- [ 96.419649][ T4431] lock(&sbi->s_alloc_mutex); [ 96.424503][ T4431] lock(&sbi->s_alloc_mutex); [ 96.429270][ T4431] [ 96.429270][ T4431] *** DEADLOCK *** [ 96.429270][ T4431] [ 96.437497][ T4431] May be due to missing lock nesting notation [ 96.437497][ T4431] [ 96.445828][ T4431] 4 locks held by syz.0.17/4431: [ 96.450770][ T4431] #0: ffff88805bcb0460 (sb_writers#13){.+.+}-{0:0}, at: do_sendfile+0x5a9/0xeb0 [ 96.459936][ T4431] #1: ffff88805b028f78 (&sb->s_type->i_mutex_key#21){+.+.}-{3:3}, at: udf_file_write_iter+0x6e/0x650 [ 96.470928][ T4431] #2: ffff88805b028da0 (&ei->i_data_sem#2){++++}-{3:3}, at: udf_get_block+0xf6/0x3cd0 [ 96.480632][ T4431] #3: ffff88802ab5cd28 (&sbi->s_alloc_mutex){+.+.}-{3:3}, at: udf_new_block+0xe73/0x1a20 [ 96.490572][ T4431] [ 96.490572][ T4431] stack backtrace: [ 96.496482][ T4431] CPU: 0 PID: 4431 Comm: syz.0.17 Not tainted syzkaller #0 [ 96.503699][ T4431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 [ 96.513784][ T4431] Call Trace: [ 96.517174][ T4431] [ 96.520140][ T4431] dump_stack_lvl+0x168/0x22e [ 96.524846][ T4431] ? show_regs_print_info+0x12/0x12 [ 96.530154][ T4431] ? load_image+0x3b0/0x3b0 [ 96.534684][ T4431] __lock_acquire+0x122f/0x7c50 [ 96.539593][ T4431] ? verify_lock_unused+0x140/0x140 [ 96.544851][ T4431] ? mark_lock+0x94/0x320 [ 96.549208][ T4431] ? __lock_acquire+0x13c0/0x7c50 [ 96.554250][ T4431] lock_acquire+0x1b4/0x490 [ 96.558777][ T4431] ? udf_free_blocks+0x8f6/0x16c0 [ 96.563824][ T4431] ? __might_sleep+0xd0/0xd0 [ 96.568445][ T4431] ? read_lock_is_recursive+0x10/0x10 [ 96.573834][ T4431] ? mark_lock+0x94/0x320 [ 96.578195][ T4431] ? mark_lock+0x94/0x320 [ 96.582542][ T4431] __mutex_lock+0x120/0xaf0 [ 96.587072][ T4431] ? udf_free_blocks+0x8f6/0x16c0 [ 96.592131][ T4431] ? folio_activate_fn+0x1ff0/0x1ff0 [ 96.597434][ T4431] ? udf_free_blocks+0x8f6/0x16c0 [ 96.602467][ T4431] ? mutex_lock_nested+0x10/0x10 [ 96.607458][ T4431] ? mark_lock+0x94/0x320 [ 96.611829][ T4431] ? write_boundary_block+0xb0/0xb0 [ 96.617061][ T4431] ? __might_sleep+0xd0/0xd0 [ 96.621705][ T4431] ? folio_mark_accessed+0x317/0x1440 [ 96.627138][ T4431] udf_free_blocks+0x8f6/0x16c0 [ 96.632033][ T4431] ? __getblk_gfp+0x4f/0xb20 [ 96.636644][ T4431] ? udf_get_fileshortad+0x6a/0x1a0 [ 96.641882][ T4431] ? orangefs_cancel_op_in_progress+0x470/0x470 [ 96.648163][ T4431] ? udf_next_aext+0x38f/0x450 [ 96.653036][ T4431] udf_delete_aext+0x4cd/0xbb0 [ 96.657851][ T4431] ? udf_next_aext+0x450/0x450 [ 96.662642][ T4431] udf_new_block+0x129b/0x1a20 [ 96.667450][ T4431] ? __getblk_gfp+0x4f/0xb20 [ 96.672069][ T4431] ? udf_get_filelongad+0x6a/0x1a0 [ 96.677188][ T4431] ? udf_prealloc_blocks+0xed0/0xed0 [ 96.682488][ T4431] ? udf_next_aext+0x38f/0x450 [ 96.687284][ T4431] udf_get_block+0x105b/0x3cd0 [ 96.692087][ T4431] ? filemap_get_folios+0xe6/0x750 [ 96.697307][ T4431] ? udf_bread+0x470/0x470 [ 96.701748][ T4431] ? do_raw_spin_unlock+0x11d/0x230 [ 96.706972][ T4431] ? create_page_buffers+0x24f/0x4a0 [ 96.712276][ T4431] __block_write_begin_int+0x54b/0x1a70 [ 96.717947][ T4431] ? udf_bread+0x470/0x470 [ 96.722385][ T4431] ? page_zero_new_buffers+0x650/0x650 [ 96.727865][ T4431] ? udf_bread+0x470/0x470 [ 96.732305][ T4431] block_write_begin+0x96/0x1e0 [ 96.737179][ T4431] udf_write_begin+0x31/0x70 [ 96.741793][ T4431] generic_perform_write+0x2db/0x560 [ 96.747188][ T4431] ? generic_file_direct_write+0x660/0x660 [ 96.753102][ T4431] ? __file_remove_privs+0x5b0/0x5b0 [ 96.758400][ T4431] ? kasan_set_track+0x60/0x70 [ 96.763243][ T4431] ? read_lock_is_recursive+0x10/0x10 [ 96.768632][ T4431] ? preempt_count_add+0x8d/0x190 [ 96.773669][ T4431] ? rwsem_write_trylock+0x12f/0x1b0 [ 96.778973][ T4431] __generic_file_write_iter+0x2b4/0x430 [ 96.784624][ T4431] udf_file_write_iter+0x28c/0x650 [ 96.789793][ T4431] do_iter_write+0x62d/0xaf0 [ 96.794396][ T4431] ? vfs_iter_write+0xa0/0xa0 [ 96.799086][ T4431] ? vfs_iter_write+0x67/0xa0 [ 96.803786][ T4431] iter_file_splice_write+0x665/0xc50 [ 96.809180][ T4431] ? splice_from_pipe+0x150/0x150 [ 96.814214][ T4431] ? generic_file_splice_read+0x253/0x4e0 [ 96.819946][ T4431] ? splice_shrink_spd+0xc0/0xc0 [ 96.825513][ T4431] ? splice_from_pipe+0x150/0x150 [ 96.830549][ T4431] direct_splice_actor+0xe1/0x130 [ 96.835694][ T4431] splice_direct_to_actor+0x480/0xb60 [ 96.841105][ T4431] ? direct_file_splice_eof+0xa0/0xa0 [ 96.846589][ T4431] ? pipe_to_sendpage+0x310/0x310 [ 96.851624][ T4431] ? common_file_perm+0x171/0x1c0 [ 96.856669][ T4431] ? fsnotify_perm+0x5a/0x550 [ 96.861376][ T4431] ? security_file_permission+0x75/0xa0 [ 96.867144][ T4431] do_splice_direct+0x1b0/0x2b0 [ 96.872017][ T4431] ? splice_direct_to_actor+0xb60/0xb60 [ 96.877581][ T4431] ? rcu_read_lock_any_held+0xb0/0x120 [ 96.883061][ T4431] ? do_splice_direct+0x2b0/0x2b0 [ 96.888104][ T4431] ? common_file_perm+0x171/0x1c0 [ 96.893150][ T4431] do_sendfile+0x5cc/0xeb0 [ 96.897596][ T4431] ? preempt_count_add+0x8d/0x190 [ 96.902630][ T4431] ? do_pwritev+0x340/0x340 [ 96.907173][ T4431] ? __se_sys_futex+0x14a/0x440 [ 96.912036][ T4431] __se_sys_sendfile64+0x13b/0x190 [ 96.917159][ T4431] ? lock_chain_count+0x20/0x20 [ 96.922200][ T4431] ? __x64_sys_sendfile64+0xa0/0xa0 [ 96.927423][ T4431] ? lockdep_hardirqs_on+0x94/0x140 [ 96.932654][ T4431] do_syscall_64+0x4c/0xa0 [ 96.937086][ T4431] ? clear_bhb_loop+0x60/0xb0 [ 96.941766][ T4431] ? clear_bhb_loop+0x60/0xb0 [ 96.946457][ T4431] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 96.952362][ T4431] RIP: 0033:0x7f301438eec9 [ 96.956795][ T4431] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 [ 96.976412][ T4431] RSP: 002b:00007f3015260038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 96.984834][ T4431] RAX: ffffffffffffffda RBX: 00007f30145e5fa0 RCX: 00007f301438eec9 [ 96.992870][ T4431] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 [ 97.000855][ T4431] RBP: 00007f3014411f91 R08: 0000000000000000 R09: 0000000000000000 [ 97.008850][ T4431] R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 [ 97.016852][ T4431] R13: 00007f30145e6038 R14: 00007f30145e5fa0 R15: 00007ffc58a83ff8 [ 97.024871][ T4431] [ 97.087109][ T4309] Bluetooth: hci0: command 0x0419 tx timeout