[ 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 '10.128.1.107' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.452956] INFO: trying to register non-static key. [ 28.458073] the code is fine but needs lockdep annotation. [ 28.463500] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.463675] turning off the locking correctness validator. [ 28.479084] CPU: 1 PID: 7978 Comm: syz-executor237 Not tainted 4.14.295-syzkaller #0 [ 28.487051] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.496390] Call Trace: [ 28.498963] dump_stack+0x1b2/0x281 [ 28.502614] register_lock_class+0x389/0x1180 [ 28.507107] ? static_obj+0x50/0x50 [ 28.510733] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 28.516081] ? save_trace+0xd6/0x290 [ 28.519775] __lock_acquire+0x167/0x3f20 [ 28.523815] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 28.528811] ? trace_hardirqs_on+0x10/0x10 [ 28.533020] ? trace_hardirqs_on+0x10/0x10 [ 28.537231] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.542653] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.547649] ? alloc_buffer_head+0x20/0x110 [ 28.551946] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.557368] lock_acquire+0x170/0x3f0 [ 28.561146] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.566226] down_read+0x36/0x80 [ 28.569599] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.574678] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.579583] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.584313] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.590014] ? nilfs_mdt_write_page+0x250/0x250 [ 28.594666] nilfs_mdt_read_block+0x7c/0x320 [ 28.599065] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.604929] ? finish_task_switch+0x178/0x610 [ 28.609414] ? finish_task_switch+0x14d/0x610 [ 28.613890] nilfs_mdt_get_block+0xc7/0xb90 [ 28.618315] ? nilfs_mdt_read_block+0x320/0x320 [ 28.622971] ? lock_downgrade+0x740/0x740 [ 28.627102] nilfs_palloc_get_block+0xb2/0x250 [ 28.631664] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.637090] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.642079] nilfs_iget+0x1c2/0x810 [ 28.645682] ? nilfs_iget_locked+0xb0/0xb0 [ 28.649903] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.654924] ? nilfs_detach_log_writer+0x980/0x980 [ 28.659831] ? wait_woken+0x230/0x230 [ 28.663606] nilfs_get_root_dentry+0x24/0x1f0 [ 28.668074] nilfs_mount+0x984/0xd00 [ 28.671762] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.676665] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.682104] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.687117] ? alloc_pages_current+0x15d/0x260 [ 28.691670] ? __lockdep_init_map+0x100/0x560 [ 28.696145] mount_fs+0x92/0x2a0 [ 28.699493] vfs_kern_mount.part.0+0x5b/0x470 [ 28.704047] do_mount+0xe65/0x2a30 [ 28.707604] ? retint_kernel+0x2d/0x2d [ 28.711488] ? copy_mount_string+0x40/0x40 [ 28.715803] ? copy_mount_options+0x19a/0x2f0 [ 28.720270] ? copy_mount_options+0x1fa/0x2f0 [ 28.724735] ? copy_mnt_ns+0xa30/0xa30 [ 28.728595] SyS_mount+0xa8/0x120 [ 28.732021] ? copy_mnt_ns+0xa30/0xa30 [ 28.735891] do_syscall_64+0x1d5/0x640 [ 28.739751] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.744915] RIP: 0033:0x7fd781bfb66a [ 28.748601] RSP: 002b:00007ffefcd3b458 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.756281] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd781bfb66a [ 28.763531] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffefcd3b470 [ 28.770778] RBP: 00007ffefcd3b470 R08: 00007ffefcd3b4b0 R09: 0000555555ee92c0 [ 28.778209] R10: 0000000001000010 R11: 0000000000000286 R12: 0000000000000004 [ 28.785457] R13: 00007ffefcd3b4b0 R14: 000000000000003b R15: 0000000020000788 [ 28.793180] kasan: CONFIG_KASAN_INLINE enabled [ 28.797750] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.805349] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.811577] Modules linked in: [ 28.814761] CPU: 1 PID: 7978 Comm: syz-executor237 Not tainted 4.14.295-syzkaller #0 [ 28.822627] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.831972] task: ffff8880b4cba6c0 task.stack: ffff8880b3490000 [ 28.838014] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 28.843697] RSP: 0018:ffff8880b3497750 EFLAGS: 00010246 [ 28.849041] RAX: 0000000000000000 RBX: ffff88808e365098 RCX: 0000000000000000 [ 28.856297] RDX: dffffc0000000000 RSI: 1ffff11016692e93 RDI: ffff88808e365158 [ 28.863644] RBP: ffff8880b3497818 R08: 0000000000000001 R09: 0000000000000000 [ 28.870911] R10: 0000000000000001 R11: ffff8880b4cba6c0 R12: 0000000000000002 [ 28.878156] R13: 1ffff11016692eeb R14: ffff88808e3650d0 R15: 0000000000000001 [ 28.885417] FS: 0000555555ee9300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.893631] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.899594] CR2: 0000000020000004 CR3: 000000009ed42000 CR4: 00000000003406e0 [ 28.906840] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.914088] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.921330] Call Trace: [ 28.923898] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.928196] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.934113] ? nilfs_mdt_write_page+0x250/0x250 [ 28.938768] nilfs_mdt_read_block+0x7c/0x320 [ 28.943265] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.949139] ? finish_task_switch+0x178/0x610 [ 28.953621] ? finish_task_switch+0x14d/0x610 [ 28.958269] nilfs_mdt_get_block+0xc7/0xb90 [ 28.962564] ? nilfs_mdt_read_block+0x320/0x320 [ 28.967206] ? lock_downgrade+0x740/0x740 [ 28.971331] nilfs_palloc_get_block+0xb2/0x250 [ 28.975893] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.981059] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.986058] nilfs_iget+0x1c2/0x810 [ 28.989660] ? nilfs_iget_locked+0xb0/0xb0 [ 28.993883] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.998788] ? nilfs_detach_log_writer+0x980/0x980 [ 29.003694] ? wait_woken+0x230/0x230 [ 29.007473] nilfs_get_root_dentry+0x24/0x1f0 [ 29.012048] nilfs_mount+0x984/0xd00 [ 29.015752] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.020661] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.026226] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.031236] ? alloc_pages_current+0x15d/0x260 [ 29.035925] ? __lockdep_init_map+0x100/0x560 [ 29.040404] mount_fs+0x92/0x2a0 [ 29.043771] vfs_kern_mount.part.0+0x5b/0x470 [ 29.048264] do_mount+0xe65/0x2a30 [ 29.051786] ? retint_kernel+0x2d/0x2d [ 29.055650] ? copy_mount_string+0x40/0x40 [ 29.059861] ? copy_mount_options+0x19a/0x2f0 [ 29.064328] ? copy_mount_options+0x1fa/0x2f0 [ 29.068796] ? copy_mnt_ns+0xa30/0xa30 [ 29.072659] SyS_mount+0xa8/0x120 [ 29.076105] ? copy_mnt_ns+0xa30/0xa30 [ 29.079988] do_syscall_64+0x1d5/0x640 [ 29.083861] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.089025] RIP: 0033:0x7fd781bfb66a [ 29.092716] RSP: 002b:00007ffefcd3b458 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.100506] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd781bfb66a [ 29.107763] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffefcd3b470 [ 29.115026] RBP: 00007ffefcd3b470 R08: 00007ffefcd3b4b0 R09: 0000555555ee92c0 [ 29.122343] R10: 0000000001000010 R11: 0000000000000286 R12: 0000000000000004 [ 29.129603] R13: 00007ffefcd3b4b0 R14: 000000000000003b R15: 0000000020000788 [ 29.136854] Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 69 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 32 02 00 00 4c 89 e6 48 89 e9 44 89 fa 48 89 [ 29.156018] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880b3497750 [ 29.163932] ---[ end trace 3ff7e09fb54e40ca ]--- [ 29.168691] Kernel panic - not syncing: Fatal exception [ 29.174189] Kernel Offset: disabled [ 29.177797] Rebooting in 86400 seconds..