DUID 00:04:f8:b5:8a:47:ae:09:95:3a:43:2d:d7:42:86:31:94:89 forked to background, child pid 4648 [ 42.885163][ T4649] 8021q: adding VLAN 0 to HW filter on device bond0 [ 42.910422][ T4649] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.177' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 68.136257][ T5067] [ 68.138668][ T5067] ====================================================== [ 68.145692][ T5067] WARNING: possible circular locking dependency detected [ 68.152722][ T5067] 6.2.0-syzkaller-12944-ge492250d5252 #0 Not tainted [ 68.159393][ T5067] ------------------------------------------------------ [ 68.166405][ T5067] syz-executor333/5067 is trying to acquire lock: [ 68.172809][ T5067] ffff88814b9b0990 (jbd2_handle){++++}-{0:0}, at: jbd2_log_wait_commit+0x153/0x4a0 [ 68.182133][ T5067] [ 68.182133][ T5067] but task is already holding lock: [ 68.189504][ T5067] ffff888076995e48 (&type->i_mutex_dir_key#3/4){+.+.}-{3:3}, at: ext4_rename2+0x2633/0x4410 [ 68.199648][ T5067] [ 68.199648][ T5067] which lock already depends on the new lock. [ 68.199648][ T5067] [ 68.210054][ T5067] [ 68.210054][ T5067] the existing dependency chain (in reverse order) is: [ 68.219067][ T5067] [ 68.219067][ T5067] -> #1 (&type->i_mutex_dir_key#3/4){+.+.}-{3:3}: [ 68.227692][ T5067] lock_acquire+0x23e/0x630 [ 68.232740][ T5067] down_write_nested+0x3d/0x50 [ 68.238066][ T5067] ext4_rename2+0x2633/0x4410 [ 68.243294][ T5067] vfs_rename+0xb1b/0xfa0 [ 68.248161][ T5067] do_renameat2+0xb9b/0x13c0 [ 68.255016][ T5067] __x64_sys_renameat2+0xd2/0xe0 [ 68.262178][ T5067] do_syscall_64+0x41/0xc0 [ 68.267139][ T5067] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 68.273568][ T5067] [ 68.273568][ T5067] -> #0 (jbd2_handle){++++}-{0:0}: [ 68.280885][ T5067] validate_chain+0x166b/0x58e0 [ 68.286300][ T5067] __lock_acquire+0x125b/0x1f80 [ 68.291674][ T5067] lock_acquire+0x23e/0x630 [ 68.296880][ T5067] jbd2_log_wait_commit+0x173/0x4a0 [ 68.302610][ T5067] jbd2_journal_stop+0x95b/0xf50 [ 68.308081][ T5067] __ext4_journal_stop+0xfc/0x1a0 [ 68.313631][ T5067] ext4_rename2+0x3c93/0x4410 [ 68.318833][ T5067] vfs_rename+0xb1b/0xfa0 [ 68.323695][ T5067] do_renameat2+0xb9b/0x13c0 [ 68.328807][ T5067] __x64_sys_renameat2+0xd2/0xe0 [ 68.334267][ T5067] do_syscall_64+0x41/0xc0 [ 68.339241][ T5067] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 68.345672][ T5067] [ 68.345672][ T5067] other info that might help us debug this: [ 68.345672][ T5067] [ 68.355984][ T5067] Possible unsafe locking scenario: [ 68.355984][ T5067] [ 68.363604][ T5067] CPU0 CPU1 [ 68.368967][ T5067] ---- ---- [ 68.374329][ T5067] lock(&type->i_mutex_dir_key#3/4); [ 68.379722][ T5067] lock(jbd2_handle); [ 68.386310][ T5067] lock(&type->i_mutex_dir_key#3/4); [ 68.394227][ T5067] lock(jbd2_handle); [ 68.398302][ T5067] [ 68.398302][ T5067] *** DEADLOCK *** [ 68.398302][ T5067] [ 68.406443][ T5067] 5 locks held by syz-executor333/5067: [ 68.411998][ T5067] #0: ffff88802c3f4460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 [ 68.421152][ T5067] #1: ffff88802c3f4748 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: lock_rename+0x58/0x1a0 [ 68.431095][ T5067] #2: ffff888076994030 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_rename+0x13e/0x1a0 [ 68.441389][ T5067] #3: ffff888076995440 (&type->i_mutex_dir_key#3/2){+.+.}-{3:3}, at: lock_rename+0x172/0x1a0 [ 68.451750][ T5067] #4: ffff888076995e48 (&type->i_mutex_dir_key#3/4){+.+.}-{3:3}, at: ext4_rename2+0x2633/0x4410 [ 68.462298][ T5067] [ 68.462298][ T5067] stack backtrace: [ 68.468179][ T5067] CPU: 0 PID: 5067 Comm: syz-executor333 Not tainted 6.2.0-syzkaller-12944-ge492250d5252 #0 [ 68.478261][ T5067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 68.488315][ T5067] Call Trace: [ 68.491608][ T5067] [ 68.494541][ T5067] dump_stack_lvl+0x1e7/0x2d0 [ 68.499234][ T5067] ? nf_tcp_handle_invalid+0x650/0x650 [ 68.504726][ T5067] ? print_circular_bug+0x12b/0x1a0 [ 68.510021][ T5067] check_noncircular+0x2fe/0x3b0 [ 68.514971][ T5067] ? deref_stack_reg+0x17c/0x210 [ 68.519915][ T5067] ? add_chain_block+0x850/0x850 [ 68.524860][ T5067] ? lockdep_lock+0x123/0x2b0 [ 68.529624][ T5067] ? unwind_next_frame+0x1ae8/0x22b0 [ 68.534914][ T5067] ? stack_trace_save+0x1c0/0x1c0 [ 68.539941][ T5067] ? _find_first_zero_bit+0xd4/0x100 [ 68.545257][ T5067] validate_chain+0x166b/0x58e0 [ 68.550142][ T5067] ? kernel_text_address+0xa3/0xe0 [ 68.555328][ T5067] ? unwind_get_return_address+0x4d/0x90 [ 68.561069][ T5067] ? stack_trace_save+0x117/0x1c0 [ 68.566194][ T5067] ? reacquire_held_locks+0x660/0x660 [ 68.571592][ T5067] ? stack_trace_snprint+0xf0/0xf0 [ 68.576710][ T5067] ? lockdep_lock+0x123/0x2b0 [ 68.581387][ T5067] ? lockdep_unlock+0x169/0x300 [ 68.586236][ T5067] ? lockdep_lock+0x2b0/0x2b0 [ 68.590922][ T5067] ? mark_lock+0x29d/0x340 [ 68.595339][ T5067] __lock_acquire+0x125b/0x1f80 [ 68.600212][ T5067] lock_acquire+0x23e/0x630 [ 68.604713][ T5067] ? jbd2_log_wait_commit+0x153/0x4a0 [ 68.610099][ T5067] ? read_lock_is_recursive+0x20/0x20 [ 68.615469][ T5067] ? __lock_acquire+0x1f80/0x1f80 [ 68.620493][ T5067] ? queued_read_lock_slowpath+0x1a2/0x2e0 [ 68.626301][ T5067] ? __pv_queued_spin_lock_slowpath+0xc50/0xc50 [ 68.632553][ T5067] ? stop_this_handle+0x3be/0x5f0 [ 68.637673][ T5067] jbd2_log_wait_commit+0x173/0x4a0 [ 68.642877][ T5067] ? jbd2_log_wait_commit+0x153/0x4a0 [ 68.648258][ T5067] ? jbd2_journal_clear_err+0xc0/0xc0 [ 68.653725][ T5067] ? stop_this_handle+0x3d8/0x5f0 [ 68.658762][ T5067] jbd2_journal_stop+0x95b/0xf50 [ 68.663723][ T5067] ? jbd2_journal_start_reserved+0x300/0x300 [ 68.669795][ T5067] ? current_time+0x1be/0x300 [ 68.674481][ T5067] __ext4_journal_stop+0xfc/0x1a0 [ 68.679515][ T5067] ext4_rename2+0x3c93/0x4410 [ 68.684211][ T5067] ? ext4_mknod+0x570/0x570 [ 68.688724][ T5067] ? mark_lock+0x9a/0x340 [ 68.693092][ T5067] ? vfs_rename+0x5c7/0xfa0 [ 68.697791][ T5067] ? __lock_acquire+0x1f80/0x1f80 [ 68.703008][ T5067] ? do_raw_spin_unlock+0x13b/0x8b0 [ 68.708219][ T5067] ? ext4_mknod+0x570/0x570 [ 68.712735][ T5067] vfs_rename+0xb1b/0xfa0 [ 68.717101][ T5067] ? __ia32_sys_link+0x90/0x90 [ 68.721884][ T5067] ? security_path_rename+0x183/0x210 [ 68.727328][ T5067] do_renameat2+0xb9b/0x13c0 [ 68.731954][ T5067] ? fsnotify_move+0x4f0/0x4f0 [ 68.736825][ T5067] ? __phys_addr_symbol+0x2f/0x70 [ 68.741873][ T5067] ? getname_flags+0x1f0/0x4e0 [ 68.746643][ T5067] __x64_sys_renameat2+0xd2/0xe0 [ 68.751593][ T5067] do_syscall_64+0x41/0xc0 [ 68.756025][ T5067] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 68.761941][ T5067] RIP: 0033:0x7f4713edd359 [ 68.766374][ T5067] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 executing program executing program executing program [ 68.786350][ T5067] RSP: 002b:00007fff40525aa8 EFLAGS: 00000246 ORIG_RAX: 000000000000013c [ 68.794777][ T5067] RAX: ffffffffffffffda RBX: 00007fff40525ae8 RCX: 00007f4713edd359 [ 68.802766][ T5067] RDX: 0000000000000004 RSI: 0000000020000140 RDI: 0000000000000004 [ 68.810754][ T5067] RBP: 0000000000000000 R08: 0000000000000004 R09: 431bde82d7b634db [ 68.818733][ T5067] R10: 00000000200002c0 R11: 0000000000000246 R12: 00007f4713ea0be0 [ 68.826722][ T5067] R13: 431bde82d7b634db R14: 00007fff40525ae0 R15: 0000000000000000 [ 68.834703][ T5067] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program