[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.83' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 26.878244] INFO: trying to register non-static key. [ 26.883363] the code is fine but needs lockdep annotation. [ 26.888968] turning off the locking correctness validator. [ 26.892028] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 26.894600] CPU: 0 PID: 7949 Comm: syz-executor102 Not tainted 4.14.295-syzkaller #0 [ 26.912314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 26.921647] Call Trace: [ 26.924212] dump_stack+0x1b2/0x281 [ 26.927819] register_lock_class+0x389/0x1180 [ 26.932288] ? static_obj+0x50/0x50 [ 26.935886] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 26.941222] ? save_trace+0xd6/0x290 [ 26.944911] __lock_acquire+0x167/0x3f20 [ 26.948945] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 26.953936] ? trace_hardirqs_on+0x10/0x10 [ 26.958141] ? trace_hardirqs_on+0x10/0x10 [ 26.962346] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 26.967769] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 26.972774] ? alloc_buffer_head+0x20/0x110 [ 26.977066] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 26.982490] lock_acquire+0x170/0x3f0 [ 26.986280] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 26.991366] down_read+0x36/0x80 [ 26.994710] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 26.999899] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.004806] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 27.009103] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 27.014880] ? nilfs_mdt_write_page+0x250/0x250 [ 27.019612] nilfs_mdt_read_block+0x7c/0x320 [ 27.023996] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 27.029854] ? __lock_acquire+0x2190/0x3f20 [ 27.034150] nilfs_mdt_get_block+0xc7/0xb90 [ 27.038447] ? nilfs_mdt_read_block+0x320/0x320 [ 27.043088] ? lock_downgrade+0x740/0x740 [ 27.047209] nilfs_palloc_get_block+0xb2/0x250 [ 27.051786] nilfs_palloc_get_entry_block+0x17d/0x230 [ 27.056967] ? nilfs_iget+0x18e/0x810 [ 27.060750] nilfs_ifile_get_inode_block+0xb4/0x150 [ 27.065745] nilfs_iget+0x1c2/0x810 [ 27.069345] ? nilfs_iget_locked+0xb0/0xb0 [ 27.073558] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 27.078459] ? nilfs_detach_log_writer+0x980/0x980 [ 27.083364] ? wait_woken+0x230/0x230 [ 27.087143] nilfs_get_root_dentry+0x24/0x1f0 [ 27.091612] nilfs_mount+0x984/0xd00 [ 27.095316] ? nilfs_attach_checkpoint+0x420/0x420 [ 27.100219] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.105646] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.110635] ? alloc_pages_current+0x15d/0x260 [ 27.115190] ? __lockdep_init_map+0x100/0x560 [ 27.119657] mount_fs+0x92/0x2a0 [ 27.123000] vfs_kern_mount.part.0+0x5b/0x470 [ 27.127469] do_mount+0xe65/0x2a30 [ 27.130979] ? do_raw_spin_unlock+0x164/0x220 [ 27.135446] ? copy_mount_string+0x40/0x40 [ 27.139654] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.144643] ? copy_mnt_ns+0xa30/0xa30 [ 27.148502] ? copy_mount_options+0x1fa/0x2f0 [ 27.152966] ? copy_mnt_ns+0xa30/0xa30 [ 27.156823] SyS_mount+0xa8/0x120 [ 27.160255] ? copy_mnt_ns+0xa30/0xa30 [ 27.164113] do_syscall_64+0x1d5/0x640 [ 27.167975] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.173162] RIP: 0033:0x7f103ebb671a [ 27.176844] RSP: 002b:00007ffd405e9288 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.184520] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f103ebb671a [ 27.191762] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd405e92a0 [ 27.199005] RBP: 00007ffd405e92a0 R08: 00007ffd405e92e0 R09: 0000555555a822c0 [ 27.206276] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 27.213516] R13: 00007ffd405e92e0 R14: 0000000000000039 R15: 0000000020000758 [ 27.221272] kasan: CONFIG_KASAN_INLINE enabled [ 27.226185] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.233574] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.239791] Modules linked in: [ 27.242975] CPU: 0 PID: 7949 Comm: syz-executor102 Not tainted 4.14.295-syzkaller #0 [ 27.250851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 27.260182] task: ffff8880b535a0c0 task.stack: ffff88808c8f8000 [ 27.266217] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 27.271896] RSP: 0018:ffff88808c8ff750 EFLAGS: 00010246 [ 27.277230] RAX: 0000000000000000 RBX: ffff8880979e4098 RCX: 0000000000000000 [ 27.284473] RDX: dffffc0000000000 RSI: 1ffff1101191fe93 RDI: ffff8880979e4158 [ 27.291716] RBP: ffff88808c8ff818 R08: 0000000000000001 R09: 0000000000000000 [ 27.298966] R10: 0000000000000001 R11: ffff8880b535a0c0 R12: 0000000000000002 [ 27.306217] R13: 1ffff1101191feeb R14: ffff8880979e40d0 R15: 0000000000000001 [ 27.313466] FS: 0000555555a82300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 27.321666] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.327531] CR2: 0000000020000004 CR3: 0000000099026000 CR4: 00000000003406f0 [ 27.334777] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.342021] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.349263] Call Trace: [ 27.351827] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 27.356125] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 27.361810] ? nilfs_mdt_write_page+0x250/0x250 [ 27.366452] nilfs_mdt_read_block+0x7c/0x320 [ 27.370843] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 27.376700] ? __lock_acquire+0x2190/0x3f20 [ 27.381005] nilfs_mdt_get_block+0xc7/0xb90 [ 27.385319] ? nilfs_mdt_read_block+0x320/0x320 [ 27.389970] ? lock_downgrade+0x740/0x740 [ 27.394212] nilfs_palloc_get_block+0xb2/0x250 [ 27.398786] nilfs_palloc_get_entry_block+0x17d/0x230 [ 27.403952] ? nilfs_iget+0x18e/0x810 [ 27.407734] nilfs_ifile_get_inode_block+0xb4/0x150 [ 27.412724] nilfs_iget+0x1c2/0x810 [ 27.416393] ? nilfs_iget_locked+0xb0/0xb0 [ 27.420633] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 27.425548] ? nilfs_detach_log_writer+0x980/0x980 [ 27.430537] ? wait_woken+0x230/0x230 [ 27.434409] nilfs_get_root_dentry+0x24/0x1f0 [ 27.438884] nilfs_mount+0x984/0xd00 [ 27.442576] ? nilfs_attach_checkpoint+0x420/0x420 [ 27.447486] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.452930] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.457922] ? alloc_pages_current+0x15d/0x260 [ 27.462483] ? __lockdep_init_map+0x100/0x560 [ 27.467062] mount_fs+0x92/0x2a0 [ 27.470403] vfs_kern_mount.part.0+0x5b/0x470 [ 27.474870] do_mount+0xe65/0x2a30 [ 27.478382] ? do_raw_spin_unlock+0x164/0x220 [ 27.482851] ? copy_mount_string+0x40/0x40 [ 27.487063] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.492054] ? copy_mnt_ns+0xa30/0xa30 [ 27.495918] ? copy_mount_options+0x1fa/0x2f0 [ 27.500386] ? copy_mnt_ns+0xa30/0xa30 [ 27.504245] SyS_mount+0xa8/0x120 [ 27.507673] ? copy_mnt_ns+0xa30/0xa30 [ 27.511539] do_syscall_64+0x1d5/0x640 [ 27.515490] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.520825] RIP: 0033:0x7f103ebb671a [ 27.524511] RSP: 002b:00007ffd405e9288 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.532198] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f103ebb671a [ 27.539441] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd405e92a0 [ 27.546683] RBP: 00007ffd405e92a0 R08: 00007ffd405e92e0 R09: 0000555555a822c0 [ 27.553925] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 27.561170] R13: 00007ffd405e92e0 R14: 0000000000000039 R15: 0000000020000758 [ 27.568414] 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 [ 27.587474] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff88808c8ff750 [ 27.594860] ---[ end trace 22787ef5998a30df ]--- [ 27.599610] Kernel panic - not syncing: Fatal exception [ 27.605147] Kernel Offset: disabled [ 27.608770] Rebooting in 86400 seconds..