[ 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 '10.128.1.92' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.065994] INFO: trying to register non-static key. [ 49.071129] the code is fine but needs lockdep annotation. [ 49.075634] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 49.076737] turning off the locking correctness validator. [ 49.092113] CPU: 0 PID: 7978 Comm: syz-executor280 Not tainted 4.14.295-syzkaller #0 [ 49.099966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 49.109292] Call Trace: [ 49.111860] dump_stack+0x1b2/0x281 [ 49.115465] register_lock_class+0x389/0x1180 [ 49.120020] ? static_obj+0x50/0x50 [ 49.123628] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 49.128969] ? save_trace+0xd6/0x290 [ 49.132658] __lock_acquire+0x167/0x3f20 [ 49.136695] ? cache_alloc_refill+0x2fa/0x350 [ 49.141166] ? trace_hardirqs_on+0x10/0x10 [ 49.145376] ? trace_hardirqs_on+0x10/0x10 [ 49.149584] ? lock_downgrade+0x740/0x740 [ 49.153708] ? alloc_buffer_head+0x20/0x110 [ 49.158004] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 49.163516] lock_acquire+0x170/0x3f0 [ 49.167398] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 49.172476] down_read+0x36/0x80 [ 49.175832] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 49.180913] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 49.185817] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 49.190116] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 49.195801] ? nilfs_mdt_write_page+0x250/0x250 [ 49.200447] nilfs_mdt_read_block+0x7c/0x320 [ 49.204831] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 49.210764] ? __lock_acquire+0x2190/0x3f20 [ 49.215058] nilfs_mdt_get_block+0xc7/0xb90 [ 49.219357] ? nilfs_mdt_read_block+0x320/0x320 [ 49.224000] ? lock_downgrade+0x740/0x740 [ 49.228119] nilfs_palloc_get_block+0xb2/0x250 [ 49.232677] nilfs_palloc_get_entry_block+0x17d/0x230 [ 49.237838] ? nilfs_iget+0x18e/0x810 [ 49.242333] nilfs_ifile_get_inode_block+0xb4/0x150 [ 49.247333] nilfs_iget+0x1c2/0x810 [ 49.250934] ? nilfs_iget_locked+0xb0/0xb0 [ 49.255142] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 49.260046] ? nilfs_detach_log_writer+0x980/0x980 [ 49.264949] ? wait_woken+0x230/0x230 [ 49.268723] nilfs_get_root_dentry+0x24/0x1f0 [ 49.273193] nilfs_mount+0x984/0xd00 [ 49.276881] ? nilfs_attach_checkpoint+0x420/0x420 [ 49.281786] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 49.287209] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.292203] ? alloc_pages_current+0x15d/0x260 [ 49.296759] ? __lockdep_init_map+0x100/0x560 [ 49.301229] mount_fs+0x92/0x2a0 [ 49.304570] vfs_kern_mount.part.0+0x5b/0x470 [ 49.309037] do_mount+0xe65/0x2a30 [ 49.312550] ? do_raw_spin_unlock+0x164/0x220 [ 49.317020] ? copy_mount_string+0x40/0x40 [ 49.321230] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.326225] ? copy_mnt_ns+0xa30/0xa30 [ 49.330085] ? copy_mount_options+0x1fa/0x2f0 [ 49.334553] ? copy_mnt_ns+0xa30/0xa30 [ 49.338413] SyS_mount+0xa8/0x120 [ 49.341840] ? copy_mnt_ns+0xa30/0xa30 [ 49.345704] do_syscall_64+0x1d5/0x640 [ 49.349568] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 49.354758] RIP: 0033:0x7f4336dd464a [ 49.358442] RSP: 002b:00007ffcffee1148 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 49.366129] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4336dd464a [ 49.373397] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffcffee1160 [ 49.380656] RBP: 00007ffcffee1160 R08: 00007ffcffee11a0 R09: 00005555563692c0 [ 49.388245] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 49.395488] R13: 00007ffcffee11a0 R14: 000000000000003a R15: 0000000020000770 [ 49.403537] kasan: CONFIG_KASAN_INLINE enabled [ 49.408194] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 49.415549] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 49.421767] Modules linked in: [ 49.424946] CPU: 0 PID: 7978 Comm: syz-executor280 Not tainted 4.14.295-syzkaller #0 [ 49.432801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 49.442130] task: ffff8880a3228280 task.stack: ffff8880b3910000 [ 49.448164] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 49.454281] RSP: 0018:ffff8880b3917750 EFLAGS: 00010246 [ 49.459618] RAX: 0000000000000000 RBX: ffff88808e395098 RCX: 0000000000000000 [ 49.467299] RDX: dffffc0000000000 RSI: 1ffff11016722e93 RDI: ffff88808e395158 [ 49.474543] RBP: ffff8880b3917818 R08: 0000000000000001 R09: 0000000000000000 [ 49.481785] R10: 0000000000000001 R11: ffff8880a3228280 R12: 0000000000000002 [ 49.489036] R13: 1ffff11016722eeb R14: ffff88808e3950d0 R15: 0000000000000001 [ 49.496294] FS: 0000555556369300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 49.504499] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.510368] CR2: 00007f4336e30380 CR3: 00000000b60f8000 CR4: 00000000003406f0 [ 49.517616] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.524860] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.532108] Call Trace: [ 49.534683] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 49.538993] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 49.544683] ? nilfs_mdt_write_page+0x250/0x250 [ 49.549332] nilfs_mdt_read_block+0x7c/0x320 [ 49.553718] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 49.559578] ? __lock_acquire+0x2190/0x3f20 [ 49.563878] nilfs_mdt_get_block+0xc7/0xb90 [ 49.568176] ? nilfs_mdt_read_block+0x320/0x320 [ 49.572821] ? lock_downgrade+0x740/0x740 [ 49.576943] nilfs_palloc_get_block+0xb2/0x250 [ 49.581500] nilfs_palloc_get_entry_block+0x17d/0x230 [ 49.586672] ? nilfs_iget+0x18e/0x810 [ 49.590448] nilfs_ifile_get_inode_block+0xb4/0x150 [ 49.595436] nilfs_iget+0x1c2/0x810 [ 49.599039] ? nilfs_iget_locked+0xb0/0xb0 [ 49.603248] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 49.608154] ? nilfs_detach_log_writer+0x980/0x980 [ 49.613057] ? wait_woken+0x230/0x230 [ 49.616829] nilfs_get_root_dentry+0x24/0x1f0 [ 49.621296] nilfs_mount+0x984/0xd00 [ 49.624984] ? nilfs_attach_checkpoint+0x420/0x420 [ 49.629888] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 49.635317] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.640319] ? alloc_pages_current+0x15d/0x260 [ 49.644877] ? __lockdep_init_map+0x100/0x560 [ 49.649347] mount_fs+0x92/0x2a0 [ 49.652694] vfs_kern_mount.part.0+0x5b/0x470 [ 49.657166] do_mount+0xe65/0x2a30 [ 49.660680] ? do_raw_spin_unlock+0x164/0x220 [ 49.665151] ? copy_mount_string+0x40/0x40 [ 49.669360] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.674349] ? copy_mnt_ns+0xa30/0xa30 [ 49.678234] ? copy_mount_options+0x1fa/0x2f0 [ 49.682728] ? copy_mnt_ns+0xa30/0xa30 [ 49.686591] SyS_mount+0xa8/0x120 [ 49.690032] ? copy_mnt_ns+0xa30/0xa30 [ 49.693906] do_syscall_64+0x1d5/0x640 [ 49.697769] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 49.702933] RIP: 0033:0x7f4336dd464a [ 49.706617] RSP: 002b:00007ffcffee1148 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 49.714298] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4336dd464a [ 49.721542] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffcffee1160 [ 49.728784] RBP: 00007ffcffee1160 R08: 00007ffcffee11a0 R09: 00005555563692c0 [ 49.736030] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 49.743274] R13: 00007ffcffee11a0 R14: 000000000000003a R15: 0000000020000770 [ 49.750522] 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 [ 49.769586] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880b3917750 [ 49.776823] ---[ end trace 4a82f17cb60748a3 ]--- [ 49.781954] Kernel panic - not syncing: Fatal exception [ 49.787393] Kernel Offset: disabled [ 49.791001] Rebooting in 86400 seconds..