[ 35.796428][ T3934] 8021q: adding VLAN 0 to HW filter on device bond0 [ 35.819692][ T3934] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK Starting sshd: OK [ 36.642054][ T4026] sshd (4026) used greatest stack depth: 19664 bytes left syzkaller Warning: Permanently added '10.128.0.162' (ED25519) to the list of known hosts. 2026/03/08 00:23:45 parsed 1 programs syzkaller login: [ 63.055141][ T4272] cgroup: Unknown subsys name 'net' [ 63.182781][ T4272] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 64.490825][ T4272] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 66.244964][ T4293] chnl_net:caif_netlink_parms(): no params data found [ 66.290261][ T4293] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.297684][ T4293] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.306581][ T4293] device bridge_slave_0 entered promiscuous mode [ 66.316276][ T4293] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.323932][ T4293] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.332104][ T4293] device bridge_slave_1 entered promiscuous mode [ 66.355385][ T4293] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.366926][ T4293] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.390960][ T4293] team0: Port device team_slave_0 added [ 66.398538][ T4293] team0: Port device team_slave_1 added [ 66.419567][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.426580][ T4293] 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. [ 66.452907][ T4293] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.466250][ T4293] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.473311][ T4293] 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. [ 66.499539][ T4293] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.527933][ T4293] device hsr_slave_0 entered promiscuous mode [ 66.534677][ T4293] device hsr_slave_1 entered promiscuous mode [ 66.637226][ T4293] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.647826][ T4293] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.656773][ T4293] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.665790][ T4293] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.691094][ T4293] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.698330][ T4293] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.706242][ T4293] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.713424][ T4293] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.767085][ T4293] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.783896][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.795311][ T48] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.804695][ T48] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.813068][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 66.830577][ T4293] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.843007][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.851719][ T48] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.858867][ T48] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.873549][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.882259][ T48] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.889415][ T48] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.906471][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.915425][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.934187][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.946508][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.959979][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.975160][ T4293] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.144616][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.152669][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.165244][ T4293] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.182941][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.202452][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.210924][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.219316][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.230312][ T4293] device veth0_vlan entered promiscuous mode [ 67.240960][ T4293] device veth1_vlan entered promiscuous mode [ 67.260623][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 67.270813][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.282802][ T4293] device veth0_macvtap entered promiscuous mode [ 67.292183][ T4293] device veth1_macvtap entered promiscuous mode [ 67.310076][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.319484][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.327705][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 67.335899][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.345203][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.362261][ T4293] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.370115][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.379618][ T75] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.392066][ T4293] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.401368][ T4293] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.410233][ T4293] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.420147][ T4293] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.543984][ T75] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.605208][ T48] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.616449][ T48] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.625637][ T4314] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.643474][ T48] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.651749][ T48] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.660567][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 69.252621][ T4355] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 69.262052][ T4355] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 69.270460][ T4357] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 69.279241][ T4357] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 69.286760][ T4357] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 69.294304][ T4357] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 2026/03/08 00:23:53 executed programs: 0 [ 69.680385][ T47] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 69.689533][ T47] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 69.697306][ T47] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 69.707129][ T47] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 69.715302][ T47] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 69.723139][ T47] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 69.826465][ T4364] chnl_net:caif_netlink_parms(): no params data found [ 69.865394][ T4364] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.872624][ T4364] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.880612][ T4364] device bridge_slave_0 entered promiscuous mode [ 69.888924][ T4364] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.896077][ T4364] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.904225][ T4364] device bridge_slave_1 entered promiscuous mode [ 69.928208][ T75] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.948635][ T4364] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.960162][ T4364] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.981175][ T4364] team0: Port device team_slave_0 added [ 69.988774][ T4364] team0: Port device team_slave_1 added [ 70.004506][ T4364] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.011650][ T4364] 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. [ 70.037965][ T4364] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.050370][ T4364] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.057317][ T4364] 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. [ 70.083548][ T4364] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.112468][ T4364] device hsr_slave_0 entered promiscuous mode [ 70.119901][ T4364] device hsr_slave_1 entered promiscuous mode [ 70.126427][ T4364] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 70.134469][ T4364] Cannot create hsr debugfs directory [ 71.340473][ T1277] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.346947][ T1277] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.738564][ T47] Bluetooth: hci0: command 0x0409 tx timeout [ 72.306820][ T75] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 72.408864][ T75] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.262771][ T4364] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.272667][ T4364] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.283201][ T4364] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.293157][ T4364] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.310753][ T75] device hsr_slave_0 left promiscuous mode [ 73.318831][ T75] device hsr_slave_1 left promiscuous mode [ 73.325918][ T75] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 73.333692][ T75] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 73.341854][ T75] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 73.349417][ T75] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 73.357009][ T75] device bridge_slave_1 left promiscuous mode [ 73.364142][ T75] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.374328][ T75] device bridge_slave_0 left promiscuous mode [ 73.381442][ T75] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.400264][ T75] device veth1_macvtap left promiscuous mode [ 73.406508][ T75] device veth0_macvtap left promiscuous mode [ 73.413169][ T75] device veth1_vlan left promiscuous mode [ 73.419371][ T75] device veth0_vlan left promiscuous mode [ 73.740507][ T75] team0 (unregistering): Port device team_slave_1 removed [ 73.768786][ T75] team0 (unregistering): Port device team_slave_0 removed [ 73.796883][ T75] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 73.818597][ T4357] Bluetooth: hci0: command 0x041b tx timeout [ 73.838389][ T75] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 74.013988][ T75] bond0 (unregistering): Released all slaves [ 74.150572][ T4364] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.172112][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.186459][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.198206][ T4364] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.207935][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.218927][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.227392][ T11] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.234613][ T11] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.243257][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.267235][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.276000][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.284728][ T11] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.291911][ T11] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.302350][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.313431][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.339940][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.349432][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.360607][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.377237][ T4364] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 74.388132][ T4364] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.400050][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.409120][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.418182][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.428739][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.437259][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.446157][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.455585][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.646977][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.660162][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.679653][ T4364] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.708278][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.722767][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.741551][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.758051][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.775265][ T4364] device veth0_vlan entered promiscuous mode [ 74.791828][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.803990][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.827990][ T4364] device veth1_vlan entered promiscuous mode [ 74.857645][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.867006][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.876592][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.885793][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.897226][ T4364] device veth0_macvtap entered promiscuous mode [ 74.912146][ T4364] device veth1_macvtap entered promiscuous mode [ 74.938034][ T4364] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.945590][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.954617][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.963404][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.972074][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.984081][ T4364] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.992983][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.002457][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.012907][ T4364] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.021864][ T4364] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.030890][ T4364] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.039737][ T4364] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.086922][ T32] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.098625][ T32] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.119474][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.129663][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.138607][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.146576][ T11] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.192836][ T4423] loop0: detected capacity change from 0 to 1024 [ 75.219988][ T4423] [ 75.222369][ T4423] ============================================ [ 75.228524][ T4423] WARNING: possible recursive locking detected [ 75.234725][ T4423] syzkaller #0 Not tainted [ 75.239224][ T4423] -------------------------------------------- [ 75.245350][ T4423] syz.0.17/4423 is trying to acquire lock: [ 75.251144][ T4423] ffff888079dd1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x3a1/0x15a0 [ 75.262057][ T4423] [ 75.262057][ T4423] but task is already holding lock: [ 75.269540][ T4423] ffff888079dd07c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1cd/0x1a50 [ 75.280579][ T4423] [ 75.280579][ T4423] other info that might help us debug this: [ 75.288631][ T4423] Possible unsafe locking scenario: [ 75.288631][ T4423] [ 75.296068][ T4423] CPU0 [ 75.299331][ T4423] ---- [ 75.302603][ T4423] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.308401][ T4423] lock(&HFSPLUS_I(inode)->extents_lock); [ 75.314193][ T4423] [ 75.314193][ T4423] *** DEADLOCK *** [ 75.314193][ T4423] [ 75.322322][ T4423] May be due to missing lock nesting notation [ 75.322322][ T4423] [ 75.330626][ T4423] 5 locks held by syz.0.17/4423: [ 75.335557][ T4423] #0: ffff888072e0c0e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 [ 75.345651][ T4423] #1: ffff88807ab34998 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_fill_super+0x143a/0x1e70 [ 75.355732][ T4423] #2: ffff88807318a0b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x150/0x1c0 [ 75.365639][ T4423] #3: ffff888079dd07c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1cd/0x1a50 [ 75.377285][ T4423] #4: ffff88807ab348f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_allocate+0x92/0x8a0 [ 75.387670][ T4423] [ 75.387670][ T4423] stack backtrace: [ 75.393560][ T4423] CPU: 0 PID: 4423 Comm: syz.0.17 Not tainted syzkaller #0 [ 75.400741][ T4423] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 [ 75.410786][ T4423] Call Trace: [ 75.414065][ T4423] [ 75.416987][ T4423] dump_stack_lvl+0x188/0x24e [ 75.421664][ T4423] ? show_regs_print_info+0x12/0x12 [ 75.426858][ T4423] ? load_image+0x400/0x400 [ 75.431399][ T4423] __lock_acquire+0x123e/0x7d10 [ 75.436251][ T4423] ? unwind_get_return_address+0x49/0x80 [ 75.441875][ T4423] ? stack_trace_save+0xf0/0xf0 [ 75.446732][ T4423] ? verify_lock_unused+0x140/0x140 [ 75.452092][ T4423] ? lockdep_unlock+0x142/0x2e0 [ 75.457105][ T4423] ? lockdep_lock+0x1f0/0x1f0 [ 75.461775][ T4423] ? add_lock_to_list+0x191/0x280 [ 75.466884][ T4423] lock_acquire+0x1bb/0x4a0 [ 75.471385][ T4423] ? hfsplus_get_block+0x3a1/0x15a0 [ 75.476575][ T4423] ? __might_sleep+0xd0/0xd0 [ 75.481161][ T4423] ? read_lock_is_recursive+0x10/0x10 [ 75.486526][ T4423] ? verify_lock_unused+0x140/0x140 [ 75.491719][ T4423] __mutex_lock+0x12d/0xaf0 [ 75.496224][ T4423] ? hfsplus_get_block+0x3a1/0x15a0 [ 75.501414][ T4423] ? memset+0x1e/0x40 [ 75.505385][ T4423] ? hfsplus_get_block+0x3a1/0x15a0 [ 75.510572][ T4423] ? mutex_lock_nested+0x10/0x10 [ 75.515554][ T4423] hfsplus_get_block+0x3a1/0x15a0 [ 75.520576][ T4423] ? hfsplus_ext_write_extent+0x220/0x220 [ 75.526286][ T4423] ? do_raw_spin_unlock+0x11d/0x230 [ 75.531473][ T4423] ? create_page_buffers+0x24f/0x4a0 [ 75.536752][ T4423] block_read_full_folio+0x3e6/0xf00 [ 75.542036][ T4423] ? _raw_spin_unlock_irq+0x1f/0x40 [ 75.547223][ T4423] ? hfsplus_ext_write_extent+0x220/0x220 [ 75.552928][ T4423] ? block_is_partially_uptodate+0x5f0/0x5f0 [ 75.558943][ T4423] ? __lock_acquire+0x7d10/0x7d10 [ 75.563982][ T4423] ? folio_put+0xd0/0xd0 [ 75.568321][ T4423] ? folio_alloc+0x51/0x60 [ 75.572833][ T4423] filemap_read_folio+0x16b/0x770 [ 75.577864][ T4423] ? folio_batch_add_and_move+0x14a/0x250 [ 75.583580][ T4423] ? hfsplus_writepage+0x30/0x30 [ 75.588551][ T4423] ? maybe_unlock_mmap_for_io+0x140/0x140 [ 75.594267][ T4423] ? filemap_add_folio+0x188/0x3c0 [ 75.599388][ T4423] do_read_cache_folio+0x2a0/0x760 [ 75.604490][ T4423] ? hfsplus_writepage+0x30/0x30 [ 75.609423][ T4423] do_read_cache_page+0x32/0x220 [ 75.614373][ T4423] hfsplus_block_allocate+0xdc/0x8a0 [ 75.619736][ T4423] hfsplus_file_extend+0xb1f/0x1a50 [ 75.624951][ T4423] ? hfsplus_get_block+0x15a0/0x15a0 [ 75.630240][ T4423] ? trace_contention_end+0x5f/0x170 [ 75.635533][ T4423] ? __mutex_lock+0x1ab/0xaf0 [ 75.640229][ T4423] ? hfsplus_find_init+0x150/0x1c0 [ 75.645350][ T4423] ? mutex_lock_nested+0x10/0x10 [ 75.650377][ T4423] hfsplus_bmap_reserve+0x11e/0x4f0 [ 75.655714][ T4423] hfsplus_create_cat+0x1c7/0x10c0 [ 75.660831][ T4423] ? __mod_timer+0x91e/0xd00 [ 75.665418][ T4423] ? hfsplus_find_cat+0x540/0x540 [ 75.670448][ T4423] ? do_raw_spin_unlock+0x11d/0x230 [ 75.675662][ T4423] ? _raw_spin_unlock+0x24/0x40 [ 75.680517][ T4423] ? hfsplus_new_inode+0x6a6/0x880 [ 75.685627][ T4423] hfsplus_fill_super+0x14b8/0x1e70 [ 75.690822][ T4423] ? hfsplus_mount+0x40/0x40 [ 75.695519][ T4423] ? snprintf+0xe5/0x140 [ 75.699753][ T4423] ? vscnprintf+0x80/0x80 [ 75.704597][ T4423] ? set_blocksize+0x1d0/0x470 [ 75.709403][ T4423] ? sb_set_blocksize+0xa5/0xe0 [ 75.714289][ T4423] mount_bdev+0x287/0x3c0 [ 75.718706][ T4423] ? hfsplus_mount+0x40/0x40 [ 75.723285][ T4423] legacy_get_tree+0xe6/0x180 [ 75.727955][ T4423] ? hfsplus_mark_mdb_dirty+0x1b0/0x1b0 [ 75.733488][ T4423] vfs_get_tree+0x88/0x270 [ 75.737907][ T4423] do_new_mount+0x24a/0xa40 [ 75.742487][ T4423] __se_sys_mount+0x2e3/0x3d0 [ 75.747153][ T4423] ? __x64_sys_mount+0xc0/0xc0 [ 75.751907][ T4423] ? lockdep_hardirqs_on+0x94/0x140 [ 75.757093][ T4423] ? __x64_sys_mount+0x1c/0xc0 [ 75.761845][ T4423] do_syscall_64+0x4c/0xa0 [ 75.766255][ T4423] ? clear_bhb_loop+0x60/0xb0 [ 75.770924][ T4423] ? clear_bhb_loop+0x60/0xb0 [ 75.775593][ T4423] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 75.781475][ T4423] RIP: 0033:0x7f960a79da0a [ 75.785894][ T4423] Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 75.805497][ T4423] RSP: 002b:00007ffe9dcfef18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 75.814089][ T4423] RAX: ffffffffffffffda RBX: 00007ffe9dcfefa0 RCX: 00007f960a79da0a [ 75.822074][ T4423] RDX: 00002000000000c0 RSI: 0000200000000080 RDI: 00007ffe9dcfef60 [ 75.830042][ T4423] RBP: 00002000000000c0 R08: 00007ffe9dcfefa0 R09: 0000000000810808 [ 75.838124][ T4423] R10: 0000000000810808 R11: 0000000000000246 R12: 0000200000000080 [ 75.846196][ T4423] R13: 00007ffe9dcfef60 R14: 00000000000006a3 R15: 00002000000008c0 [ 75.854170][ T4423] [ 75.862581][ T4423] hfsplus: b-tree write err: -5, ino 25 [ 75.897752][ T47] Bluetooth: hci0: command 0x040f tx timeout