[ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.28' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.577720] INFO: trying to register non-static key. [ 27.582918] the code is fine but needs lockdep annotation. [ 27.588528] turning off the locking correctness validator. [ 27.588863] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 27.594141] CPU: 1 PID: 7971 Comm: syz-executor264 Not tainted 4.14.295-syzkaller #0 [ 27.594145] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 27.594147] Call Trace: [ 27.594161] dump_stack+0x1b2/0x281 [ 27.594170] register_lock_class+0x389/0x1180 [ 27.594177] ? static_obj+0x50/0x50 [ 27.594183] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 27.594187] ? save_trace+0xd6/0x290 [ 27.594194] __lock_acquire+0x167/0x3f20 [ 27.594205] ? cache_alloc_refill+0x2fa/0x350 [ 27.653153] ? trace_hardirqs_on+0x10/0x10 [ 27.657363] ? trace_hardirqs_on+0x10/0x10 [ 27.661567] ? lock_downgrade+0x740/0x740 [ 27.665686] ? alloc_buffer_head+0x20/0x110 [ 27.669977] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.675398] lock_acquire+0x170/0x3f0 [ 27.679174] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.684249] down_read+0x36/0x80 [ 27.687585] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.692673] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.697576] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 27.701869] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 27.707551] ? nilfs_mdt_write_page+0x250/0x250 [ 27.712193] nilfs_mdt_read_block+0x7c/0x320 [ 27.716571] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 27.722426] ? __lock_acquire+0x2190/0x3f20 [ 27.726721] nilfs_mdt_get_block+0xc7/0xb90 [ 27.731536] ? nilfs_mdt_read_block+0x320/0x320 [ 27.736178] ? lock_downgrade+0x740/0x740 [ 27.740307] nilfs_palloc_get_block+0xb2/0x250 [ 27.744861] nilfs_palloc_get_entry_block+0x17d/0x230 [ 27.750021] ? nilfs_iget+0x18e/0x810 [ 27.753793] nilfs_ifile_get_inode_block+0xb4/0x150 [ 27.758781] nilfs_iget+0x1c2/0x810 [ 27.762379] ? nilfs_iget_locked+0xb0/0xb0 [ 27.766582] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 27.771482] ? nilfs_detach_log_writer+0x980/0x980 [ 27.776387] ? wait_woken+0x230/0x230 [ 27.780159] nilfs_get_root_dentry+0x24/0x1f0 [ 27.784627] nilfs_mount+0x984/0xd00 [ 27.788320] ? nilfs_attach_checkpoint+0x420/0x420 [ 27.793222] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.798654] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.803640] ? alloc_pages_current+0x15d/0x260 [ 27.808193] ? __lockdep_init_map+0x100/0x560 [ 27.812664] mount_fs+0x92/0x2a0 [ 27.816005] vfs_kern_mount.part.0+0x5b/0x470 [ 27.820474] do_mount+0xe65/0x2a30 [ 27.824446] ? copy_mount_string+0x40/0x40 [ 27.828658] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.833645] ? copy_mnt_ns+0xa30/0xa30 [ 27.837501] ? copy_mount_options+0x1fa/0x2f0 [ 27.841965] ? copy_mnt_ns+0xa30/0xa30 [ 27.845825] SyS_mount+0xa8/0x120 [ 27.849250] ? copy_mnt_ns+0xa30/0xa30 [ 27.853109] do_syscall_64+0x1d5/0x640 [ 27.857119] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.862286] RIP: 0033:0x7fa8d007e74a [ 27.865979] RSP: 002b:00007ffeba473e98 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.873662] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa8d007e74a [ 27.880906] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffeba473eb0 [ 27.888152] RBP: 00007ffeba473eb0 R08: 00007ffeba473ef0 R09: 00005555558112c0 [ 27.895393] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 27.902644] R13: 00007ffeba473ef0 R14: 000000000000003a R15: 0000000020000770 [ 27.910422] kasan: CONFIG_KASAN_INLINE enabled [ 27.914997] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.922413] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.928626] Modules linked in: [ 27.931798] CPU: 1 PID: 7971 Comm: syz-executor264 Not tainted 4.14.295-syzkaller #0 [ 27.939651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 27.948987] task: ffff8880b04086c0 task.stack: ffff88809f950000 [ 27.955025] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 27.960706] RSP: 0018:ffff88809f957750 EFLAGS: 00010246 [ 27.966172] RAX: 0000000000000000 RBX: ffff88808d2cd7b8 RCX: 0000000000000000 [ 27.973421] RDX: dffffc0000000000 RSI: 1ffff11013f2ae93 RDI: ffff88808d2cd878 [ 27.980665] RBP: ffff88809f957818 R08: 0000000000000001 R09: 0000000000000000 [ 27.987908] R10: 0000000000000001 R11: ffff8880b04086c0 R12: 0000000000000002 [ 27.995155] R13: 1ffff11013f2aeeb R14: ffff88808d2cd7f0 R15: 0000000000000001 [ 28.002400] FS: 0000555555811300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.010600] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.016459] CR2: 0000561b09f9c988 CR3: 00000000a069e000 CR4: 00000000003406e0 [ 28.023708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.030952] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.038195] Call Trace: [ 28.040765] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.045062] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.050747] ? nilfs_mdt_write_page+0x250/0x250 [ 28.055390] nilfs_mdt_read_block+0x7c/0x320 [ 28.059771] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.065640] ? __lock_acquire+0x2190/0x3f20 [ 28.069944] nilfs_mdt_get_block+0xc7/0xb90 [ 28.074255] ? nilfs_mdt_read_block+0x320/0x320 [ 28.078910] ? lock_downgrade+0x740/0x740 [ 28.083047] nilfs_palloc_get_block+0xb2/0x250 [ 28.087608] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.092776] ? nilfs_iget+0x18e/0x810 [ 28.096561] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.101554] nilfs_iget+0x1c2/0x810 [ 28.105154] ? nilfs_iget_locked+0xb0/0xb0 [ 28.109363] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.114267] ? nilfs_detach_log_writer+0x980/0x980 [ 28.119184] ? wait_woken+0x230/0x230 [ 28.122960] nilfs_get_root_dentry+0x24/0x1f0 [ 28.127433] nilfs_mount+0x984/0xd00 [ 28.131123] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.136029] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.141458] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.146448] ? alloc_pages_current+0x15d/0x260 [ 28.151001] ? __lockdep_init_map+0x100/0x560 [ 28.155470] mount_fs+0x92/0x2a0 [ 28.158812] vfs_kern_mount.part.0+0x5b/0x470 [ 28.163290] do_mount+0xe65/0x2a30 [ 28.166803] ? copy_mount_string+0x40/0x40 [ 28.171015] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.176000] ? copy_mnt_ns+0xa30/0xa30 [ 28.179858] ? copy_mount_options+0x1fa/0x2f0 [ 28.184326] ? copy_mnt_ns+0xa30/0xa30 [ 28.188184] SyS_mount+0xa8/0x120 [ 28.191609] ? copy_mnt_ns+0xa30/0xa30 [ 28.195468] do_syscall_64+0x1d5/0x640 [ 28.199332] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.204494] RIP: 0033:0x7fa8d007e74a [ 28.208176] RSP: 002b:00007ffeba473e98 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.215867] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa8d007e74a [ 28.223122] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffeba473eb0 [ 28.230371] RBP: 00007ffeba473eb0 R08: 00007ffeba473ef0 R09: 00005555558112c0 [ 28.237664] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 28.244907] R13: 00007ffeba473ef0 R14: 000000000000003a R15: 0000000020000770 [ 28.252151] 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 [ 28.271493] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff88809f957750 [ 28.279098] ---[ end trace dab62ce89d249554 ]--- [ 28.283848] Kernel panic - not syncing: Fatal exception [ 28.289415] Kernel Offset: disabled [ 28.293024] Rebooting in 86400 seconds..