[ 87.147575][ T23] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.82' (ED25519) to the list of known hosts. 2026/04/17 18:51:20 ignoring optional flag "type"="gce" 2026/04/17 18:51:20 parsed 1 programs 2026/04/17 18:51:22 executed programs: 0 [ 90.796503][ T4436] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 90.972462][ T4506] chnl_net:caif_netlink_parms(): no params data found [ 91.022383][ T4506] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.030160][ T4506] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.039132][ T4506] device bridge_slave_0 entered promiscuous mode [ 91.048740][ T4506] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.056003][ T4506] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.064501][ T4506] device bridge_slave_1 entered promiscuous mode [ 91.089969][ T4506] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 91.102094][ T4506] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 91.129923][ T4506] team0: Port device team_slave_0 added [ 91.138716][ T4506] team0: Port device team_slave_1 added [ 91.163051][ T4506] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 91.171349][ T4506] 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. [ 91.197763][ T4506] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 91.210732][ T4506] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 91.218180][ T4506] 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. [ 91.244710][ T4506] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 91.278921][ T4506] device hsr_slave_0 entered promiscuous mode [ 91.286473][ T4506] device hsr_slave_1 entered promiscuous mode [ 91.901078][ T4506] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 91.912760][ T4506] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 91.924955][ T4506] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 91.935861][ T4506] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 92.025681][ T4506] 8021q: adding VLAN 0 to HW filter on device bond0 [ 92.043000][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 92.052317][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 92.064891][ T4506] 8021q: adding VLAN 0 to HW filter on device team0 [ 92.077973][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 92.088363][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 92.098563][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.106011][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 92.117372][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 92.132590][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 92.142799][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 92.152607][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.159942][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 92.178272][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 92.187808][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 92.207200][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 92.218738][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 92.229109][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 92.240573][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 92.260907][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 92.271710][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 92.281904][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 92.295649][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 92.305808][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 92.316714][ T4506] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 92.450408][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 92.458624][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 92.475346][ T4506] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 92.502294][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 92.514405][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 92.540754][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 92.550149][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 92.562950][ T4506] device veth0_vlan entered promiscuous mode [ 92.570944][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 92.580465][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 92.595117][ T4506] device veth1_vlan entered promiscuous mode [ 92.625916][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 92.634957][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 92.643623][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 92.653514][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 92.666372][ T4506] device veth0_macvtap entered promiscuous mode [ 92.679100][ T4506] device veth1_macvtap entered promiscuous mode [ 92.699315][ T4506] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 92.708370][ T531] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 92.718327][ T531] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 92.728512][ T531] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 92.739462][ T531] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 92.753559][ T4506] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 92.764073][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 92.773814][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 92.789154][ T4506] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.798624][ T4506] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.807784][ T4506] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.819230][ T4506] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.905778][ T2236] Bluetooth: hci0: command 0x0409 tx timeout [ 93.004473][ T4571] [ 93.006865][ T4571] ====================================================== [ 93.013922][ T4571] WARNING: possible circular locking dependency detected [ 93.021262][ T4571] syzkaller #0 Not tainted [ 93.026323][ T4571] ------------------------------------------------------ [ 93.033674][ T4571] syz-executor.0/4571 is trying to acquire lock: [ 93.040122][ T4571] ffff888021b283f0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: ext4_bmap+0x4d/0x3f0 [ 93.050026][ T4571] [ 93.050026][ T4571] but task is already holding lock: [ 93.057779][ T4571] ffff88814c6f43f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: jbd2_journal_flush+0x313/0xcc0 [ 93.068728][ T4571] [ 93.068728][ T4571] which lock already depends on the new lock. [ 93.068728][ T4571] [ 93.079678][ T4571] [ 93.079678][ T4571] the existing dependency chain (in reverse order) is: [ 93.090316][ T4571] [ 93.090316][ T4571] -> #4 (&journal->j_checkpoint_mutex){+.+.}-{3:3}: [ 93.100258][ T4571] __mutex_lock_common+0x1e3/0x2400 [ 93.106139][ T4571] mutex_lock_io_nested+0x43/0x60 [ 93.112359][ T4571] jbd2_journal_flush+0x284/0xcc0 [ 93.118585][ T4571] ext4_ioctl+0x3151/0x3870 [ 93.124071][ T4571] __se_sys_ioctl+0xfa/0x170 [ 93.129578][ T4571] do_syscall_64+0x4c/0xa0 [ 93.134659][ T4571] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 93.141237][ T4571] [ 93.141237][ T4571] -> #3 (&journal->j_barrier){+.+.}-{3:3}: [ 93.149371][ T4571] __mutex_lock_common+0x1e3/0x2400 [ 93.155481][ T4571] mutex_lock_nested+0x17/0x20 [ 93.161196][ T4571] jbd2_journal_lock_updates+0x2d1/0x390 [ 93.167601][ T4571] ext4_change_inode_journal_flag+0x19c/0x6b0 [ 93.174341][ T4571] ext4_fileattr_set+0xe5a/0x1750 [ 93.180030][ T4571] vfs_fileattr_set+0x859/0xb10 [ 93.185543][ T4571] do_vfs_ioctl+0x186a/0x1ef0 [ 93.190871][ T4571] __se_sys_ioctl+0x83/0x170 [ 93.196379][ T4571] do_syscall_64+0x4c/0xa0 [ 93.201495][ T4571] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 93.207960][ T4571] [ 93.207960][ T4571] -> #2 (&sbi->s_writepages_rwsem){++++}-{0:0}: [ 93.216480][ T4571] percpu_down_write+0x52/0x2f0 [ 93.222284][ T4571] ext4_change_inode_journal_flag+0x194/0x6b0 [ 93.228943][ T4571] ext4_fileattr_set+0xe5a/0x1750 [ 93.234556][ T4571] vfs_fileattr_set+0x859/0xb10 [ 93.240059][ T4571] do_vfs_ioctl+0x186a/0x1ef0 [ 93.245725][ T4571] __se_sys_ioctl+0x83/0x170 [ 93.251281][ T4571] do_syscall_64+0x4c/0xa0 [ 93.256273][ T4571] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 93.262951][ T4571] [ 93.262951][ T4571] -> #1 (mapping.invalidate_lock){++++}-{3:3}: [ 93.271333][ T4571] down_write+0x38/0x60 [ 93.276164][ T4571] ext4_setattr+0xdb6/0x19e0 [ 93.281333][ T4571] notify_change+0xbcd/0xee0 [ 93.286845][ T4571] do_truncate+0x1ac/0x240 [ 93.291831][ T4571] do_sys_ftruncate+0x31b/0x3d0 [ 93.297402][ T4571] do_syscall_64+0x4c/0xa0 [ 93.302393][ T4571] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 93.308860][ T4571] [ 93.308860][ T4571] -> #0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}: [ 93.317634][ T4571] __lock_acquire+0x2c42/0x7d10 [ 93.323310][ T4571] lock_acquire+0x19e/0x400 [ 93.328579][ T4571] down_read+0x44/0x2e0 [ 93.333384][ T4571] ext4_bmap+0x4d/0x3f0 [ 93.338105][ T4571] bmap+0xa2/0xd0 [ 93.342314][ T4571] jbd2_journal_flush+0x655/0xcc0 [ 93.348076][ T4571] ext4_ioctl+0x3151/0x3870 [ 93.353361][ T4571] __se_sys_ioctl+0xfa/0x170 [ 93.358518][ T4571] do_syscall_64+0x4c/0xa0 [ 93.363517][ T4571] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 93.370074][ T4571] [ 93.370074][ T4571] other info that might help us debug this: [ 93.370074][ T4571] [ 93.380618][ T4571] Chain exists of: [ 93.380618][ T4571] &sb->s_type->i_mutex_key#9 --> &journal->j_barrier --> &journal->j_checkpoint_mutex [ 93.380618][ T4571] [ 93.397157][ T4571] Possible unsafe locking scenario: [ 93.397157][ T4571] [ 93.404967][ T4571] CPU0 CPU1 [ 93.410733][ T4571] ---- ---- [ 93.417054][ T4571] lock(&journal->j_checkpoint_mutex); [ 93.422786][ T4571] lock(&journal->j_barrier); [ 93.430359][ T4571] lock(&journal->j_checkpoint_mutex); [ 93.438846][ T4571] lock(&sb->s_type->i_mutex_key#9); [ 93.444541][ T4571] [ 93.444541][ T4571] *** DEADLOCK *** [ 93.444541][ T4571] [ 93.453252][ T4571] 2 locks held by syz-executor.0/4571: [ 93.458875][ T4571] #0: ffff88814c6f4170 (&journal->j_barrier){+.+.}-{3:3}, at: jbd2_journal_lock_updates+0x2d1/0x390 [ 93.470142][ T4571] #1: ffff88814c6f43f8 (&journal->j_checkpoint_mutex){+.+.}-{3:3}, at: jbd2_journal_flush+0x313/0xcc0 [ 93.481715][ T4571] [ 93.481715][ T4571] stack backtrace: [ 93.487676][ T4571] CPU: 1 PID: 4571 Comm: syz-executor.0 Not tainted syzkaller #0 [ 93.495644][ T4571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 93.506258][ T4571] Call Trace: [ 93.509691][ T4571] [ 93.512683][ T4571] dump_stack_lvl+0x188/0x250 [ 93.517586][ T4571] ? load_image+0x400/0x400 [ 93.522140][ T4571] ? show_regs_print_info+0x20/0x20 [ 93.527417][ T4571] ? print_circular_bug+0x12b/0x1a0 [ 93.532995][ T4571] check_noncircular+0x296/0x330 [ 93.538099][ T4571] ? lockdep_hardirqs_on+0x94/0x140 [ 93.543470][ T4571] ? add_chain_block+0x940/0x940 [ 93.548476][ T4571] ? lockdep_lock+0xf1/0x1f0 [ 93.553470][ T4571] ? mark_lock+0x94/0x320 [ 93.558085][ T4571] __lock_acquire+0x2c42/0x7d10 [ 93.563220][ T4571] ? verify_lock_unused+0x140/0x140 [ 93.568478][ T4571] ? _raw_spin_unlock_irqrestore+0x82/0x120 [ 93.574441][ T4571] ? lockdep_hardirqs_on+0x94/0x140 [ 93.579911][ T4571] ? verify_lock_unused+0x140/0x140 [ 93.585395][ T4571] ? schedule+0x132/0x1e0 [ 93.589980][ T4571] ? io_schedule+0x7c/0xd0 [ 93.594455][ T4571] lock_acquire+0x19e/0x400 [ 93.599012][ T4571] ? ext4_bmap+0x4d/0x3f0 [ 93.603604][ T4571] ? __might_sleep+0xf0/0xf0 [ 93.608294][ T4571] ? read_lock_is_recursive+0x10/0x10 [ 93.613992][ T4571] ? jbd2_journal_flush+0x36f/0xcc0 [ 93.619333][ T4571] ? ext4_journalled_write_end+0xf30/0xf30 [ 93.625800][ T4571] down_read+0x44/0x2e0 [ 93.630120][ T4571] ? ext4_bmap+0x4d/0x3f0 [ 93.634830][ T4571] ? ext4_journalled_write_end+0xf30/0xf30 [ 93.640689][ T4571] ext4_bmap+0x4d/0x3f0 [ 93.645108][ T4571] ? ext4_journalled_write_end+0xf30/0xf30 [ 93.651274][ T4571] bmap+0xa2/0xd0 [ 93.654987][ T4571] jbd2_journal_flush+0x655/0xcc0 [ 93.660170][ T4571] ? __bpf_trace_jbd2_shrink_checkpoint_list+0x50/0x50 [ 93.667204][ T4571] ? bpf_lsm_capable+0x5/0x10 [ 93.672020][ T4571] ? security_capable+0x85/0xb0 [ 93.677114][ T4571] ext4_ioctl+0x3151/0x3870 [ 93.681857][ T4571] ? do_vfs_ioctl+0x1d16/0x1ef0 [ 93.686764][ T4571] ? ext4_fileattr_set+0x1750/0x1750 [ 93.692104][ T4571] ? __ia32_compat_sys_ioctl+0x910/0x910 [ 93.697959][ T4571] ? rcu_lock_release+0x5/0x20 [ 93.702776][ T4571] ? __lock_acquire+0x7d10/0x7d10 [ 93.707851][ T4571] ? kfree+0xef/0x2a0 [ 93.711981][ T4571] ? tomoyo_path_number_perm+0x5b4/0x660 [ 93.718039][ T4571] ? verify_lock_unused+0x140/0x140 [ 93.724353][ T4571] ? tomoyo_check_path_acl+0x1c0/0x1c0 [ 93.729917][ T4571] ? bpf_lsm_file_ioctl+0x5/0x10 [ 93.735631][ T4571] ? security_file_ioctl+0x7c/0xa0 [ 93.741893][ T4571] ? ext4_fileattr_set+0x1750/0x1750 [ 93.748321][ T4571] __se_sys_ioctl+0xfa/0x170 [ 93.753082][ T4571] do_syscall_64+0x4c/0xa0 [ 93.758072][ T4571] ? clear_bhb_loop+0x30/0x80 [ 93.762803][ T4571] ? clear_bhb_loop+0x30/0x80 [ 93.767694][ T4571] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 93.773950][ T4571] RIP: 0033:0x7f621eef53b9 [ 93.778697][ T4571] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 d0 ff ff ff f7 d8 64 89 01 48 [ 93.799201][ T4571] RSP: 002b:00007f621e2850b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 93.807759][ T4571] RAX: ffffffffffffffda RBX: 00007f621f032f80 RCX: 00007f621eef53b9 [ 93.816350][ T4571] RDX: 0000000020000000 RSI: 000000004004662b RDI: 0000000000000005 [ 93.824726][ T4571] RBP: 00007f621ef564c2 R08: 0000000000000000 R09: 0000000000000000 [ 93.832928][ T4571] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 93.840961][ T4571] R13: 000000000000000b R14: 00007f621f032f80 R15: 00007ffc94bd53b8 [ 93.849199][ T4571] [ 94.993908][ T2236] Bluetooth: hci0: command 0x041b tx timeout 2026/04/17 18:51:27 executed programs: 27 [ 97.063969][ T4545] Bluetooth: hci0: command 0x040f tx timeout [ 99.144032][ T4545] Bluetooth: hci0: command 0x0419 tx timeout 2026/04/17 18:51:32 executed programs: 104