[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.92' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.023304] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 34.033403] INFO: trying to register non-static key. [ 34.038505] The code is fine but needs lockdep annotation, or maybe [ 34.044892] you didn't initialize this object before use? [ 34.050403] turning off the locking correctness validator. [ 34.056004] CPU: 0 PID: 8119 Comm: syz-executor220 Not tainted 4.19.211-syzkaller #0 [ 34.063856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 34.073187] Call Trace: [ 34.075756] dump_stack+0x1fc/0x2ef [ 34.079362] register_lock_class+0xe82/0x11c0 [ 34.083835] ? static_obj+0x50/0x50 [ 34.087439] __lock_acquire+0x17d/0x3ff0 [ 34.091475] ? __lock_acquire+0x6de/0x3ff0 [ 34.095694] ? mark_held_locks+0xf0/0xf0 [ 34.099743] ? mark_held_locks+0xf0/0xf0 [ 34.103782] ? lock_downgrade+0x720/0x720 [ 34.107913] ? lock_acquire+0x170/0x3c0 [ 34.111868] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 34.116788] ? check_preemption_disabled+0x41/0x280 [ 34.121782] ? check_preemption_disabled+0x41/0x280 [ 34.126774] ? alloc_buffer_head+0x20/0x130 [ 34.131073] lock_acquire+0x170/0x3c0 [ 34.134859] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 34.139942] down_read+0x36/0x80 [ 34.143284] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 34.148369] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 34.153283] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 34.157583] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 34.163273] ? save_trace+0xd6/0x290 [ 34.166962] ? nilfs_mdt_write_page+0x280/0x280 [ 34.171608] nilfs_mdt_read_block+0x96/0x3e0 [ 34.175997] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 34.181858] ? mark_held_locks+0xf0/0xf0 [ 34.185902] nilfs_mdt_get_block+0xe6/0xd40 [ 34.190202] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 34.194853] ? lock_downgrade+0x720/0x720 [ 34.198980] ? lock_acquire+0x170/0x3c0 [ 34.202937] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 34.207669] nilfs_palloc_get_block+0xc4/0x2b0 [ 34.212226] nilfs_palloc_get_entry_block+0x17b/0x230 [ 34.217390] ? nilfs_iget+0x1cf/0x860 [ 34.221165] nilfs_ifile_get_inode_block+0xbf/0x170 [ 34.226158] nilfs_iget+0x204/0x860 [ 34.229760] ? nilfs_iget_locked+0xd0/0xd0 [ 34.233992] ? nilfs_attach_log_writer+0x68b/0xa30 [ 34.238896] ? wait_woken+0x250/0x250 [ 34.242671] ? nilfs_mount+0x9df/0xe70 [ 34.246537] nilfs_get_root_dentry+0x26/0x250 [ 34.251013] nilfs_mount+0xac8/0xe70 [ 34.254702] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 34.259607] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.264602] ? pcpu_alloc+0xc9/0x1190 [ 34.268380] ? alloc_pages_current+0x19b/0x2a0 [ 34.272940] mount_fs+0xa3/0x310 [ 34.276285] vfs_kern_mount.part.0+0x68/0x470 [ 34.280758] do_mount+0x115c/0x2f50 [ 34.284371] ? do_raw_spin_unlock+0x171/0x230 [ 34.288855] ? check_preemption_disabled+0x41/0x280 [ 34.293872] ? copy_mount_string+0x40/0x40 [ 34.298094] ? copy_mount_options+0x59/0x380 [ 34.302481] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.307476] ? kmem_cache_alloc_trace+0x323/0x380 [ 34.312385] ? copy_mount_options+0x26f/0x380 [ 34.316865] ksys_mount+0xcf/0x130 [ 34.320385] __x64_sys_mount+0xba/0x150 [ 34.324341] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.328904] do_syscall_64+0xf9/0x620 [ 34.332684] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.337851] RIP: 0033:0x7f23129a766a [ 34.341540] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 34.360419] RSP: 002b:00007ffd8626c388 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 34.368102] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f23129a766a [ 34.375346] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffd8626c3a0 [ 34.382590] RBP: 00007ffd8626c3a0 R08: 00007ffd8626c3e0 R09: 0000555556a002c0 [ 34.389835] R10: 0000000000010400 R11: 0000000000000286 R12: 0000000000000004 [ 34.397081] R13: 00007ffd8626c3e0 R14: 000000000000003b R15: 0000000020001088 [ 34.405064] kasan: CONFIG_KASAN_INLINE enabled [ 34.409696] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.417294] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.423523] CPU: 0 PID: 8119 Comm: syz-executor220 Not tainted 4.19.211-syzkaller #0 [ 34.431385] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 34.440732] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 34.446427] Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 95 02 00 00 48 8b 83 c0 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48 c1 e9 03 <80> 3c 11 00 0f 85 7d 02 00 00 4c 89 e6 48 89 e9 44 89 fa 48 89 df [ 34.465306] RSP: 0018:ffff8880950e7650 EFLAGS: 00010246 [ 34.470647] RAX: 0000000000000000 RBX: ffff88808a806098 RCX: 0000000000000000 [ 34.477892] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808a806158 [ 34.485137] RBP: ffff8880950e7738 R08: 0000000000000001 R09: 0000000000000000 [ 34.492383] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 34.499629] R13: 1ffff11012a1cecb R14: ffff88808a8060d0 R15: 0000000000000001 [ 34.506875] FS: 0000555556a00300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 34.515075] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.520931] CR2: 0000561055290988 CR3: 000000009866c000 CR4: 00000000003406f0 [ 34.528184] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.535427] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.542672] Call Trace: [ 34.545240] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 34.549544] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 34.555232] ? save_trace+0xd6/0x290 [ 34.558925] ? nilfs_mdt_write_page+0x280/0x280 [ 34.563585] nilfs_mdt_read_block+0x96/0x3e0 [ 34.567978] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 34.573846] ? mark_held_locks+0xf0/0xf0 [ 34.577887] nilfs_mdt_get_block+0xe6/0xd40 [ 34.582190] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 34.586835] ? lock_downgrade+0x720/0x720 [ 34.590959] ? lock_acquire+0x170/0x3c0 [ 34.594913] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 34.599648] nilfs_palloc_get_block+0xc4/0x2b0 [ 34.604213] nilfs_palloc_get_entry_block+0x17b/0x230 [ 34.609383] ? nilfs_iget+0x1cf/0x860 [ 34.613161] nilfs_ifile_get_inode_block+0xbf/0x170 [ 34.618153] nilfs_iget+0x204/0x860 [ 34.621758] ? nilfs_iget_locked+0xd0/0xd0 [ 34.625970] ? nilfs_attach_log_writer+0x68b/0xa30 [ 34.630900] ? wait_woken+0x250/0x250 [ 34.634684] ? nilfs_mount+0x9df/0xe70 [ 34.638553] nilfs_get_root_dentry+0x26/0x250 [ 34.643032] nilfs_mount+0xac8/0xe70 [ 34.646729] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 34.651639] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.656634] ? pcpu_alloc+0xc9/0x1190 [ 34.660414] ? alloc_pages_current+0x19b/0x2a0 [ 34.664982] mount_fs+0xa3/0x310 [ 34.668338] vfs_kern_mount.part.0+0x68/0x470 [ 34.672815] do_mount+0x115c/0x2f50 [ 34.676420] ? do_raw_spin_unlock+0x171/0x230 [ 34.680896] ? check_preemption_disabled+0x41/0x280 [ 34.685894] ? copy_mount_string+0x40/0x40 [ 34.690111] ? copy_mount_options+0x59/0x380 [ 34.694499] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.699497] ? kmem_cache_alloc_trace+0x323/0x380 [ 34.704322] ? copy_mount_options+0x26f/0x380 [ 34.708795] ksys_mount+0xcf/0x130 [ 34.712315] __x64_sys_mount+0xba/0x150 [ 34.716269] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.720827] do_syscall_64+0xf9/0x620 [ 34.724605] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.729771] RIP: 0033:0x7f23129a766a [ 34.733462] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 34.752338] RSP: 002b:00007ffd8626c388 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 34.760022] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f23129a766a [ 34.767267] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffd8626c3a0 [ 34.774510] RBP: 00007ffd8626c3a0 R08: 00007ffd8626c3e0 R09: 0000555556a002c0 [ 34.781754] R10: 0000000000010400 R11: 0000000000000286 R12: 0000000000000004 [ 34.788997] R13: 00007ffd8626c3e0 R14: 000000000000003b R15: 0000000020001088 [ 34.796245] Modules linked in: [ 34.799539] ---[ end trace e6003c8896bf93c9 ]--- [ 34.804305] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 34.810056] Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 95 02 00 00 48 8b 83 c0 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48 c1 e9 03 <80> 3c 11 00 0f 85 7d 02 00 00 4c 89 e6 48 89 e9 44 89 fa 48 89 df [ 34.828999] RSP: 0018:ffff8880950e7650 EFLAGS: 00010246 [ 34.834347] RAX: 0000000000000000 RBX: ffff88808a806098 RCX: 0000000000000000 [ 34.841624] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808a806158 [ 34.848934] RBP: ffff8880950e7738 R08: 0000000000000001 R09: 0000000000000000 [ 34.856216] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 34.863470] R13: 1ffff11012a1cecb R14: ffff88808a8060d0 R15: 0000000000000001 [ 34.870771] FS: 0000555556a00300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 34.879015] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.884884] CR2: 0000561055290988 CR3: 000000009866c000 CR4: 00000000003406f0 [ 34.892187] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.899477] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.906784] Kernel panic - not syncing: Fatal exception [ 34.912298] Kernel Offset: disabled [ 34.915904] Rebooting in 86400 seconds..