[ 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 '10.128.0.142' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.848819] INFO: trying to register non-static key. [ 28.850270] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 28.853937] the code is fine but needs lockdep annotation. [ 28.869323] turning off the locking correctness validator. [ 28.874935] CPU: 1 PID: 7992 Comm: syz-executor110 Not tainted 4.14.295-syzkaller #0 [ 28.882805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.892134] Call Trace: [ 28.894701] dump_stack+0x1b2/0x281 [ 28.898305] register_lock_class+0x389/0x1180 [ 28.902776] ? static_obj+0x50/0x50 [ 28.906378] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 28.911715] ? save_trace+0xd6/0x290 [ 28.915502] __lock_acquire+0x167/0x3f20 [ 28.919549] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 28.924549] ? trace_hardirqs_on+0x10/0x10 [ 28.928770] ? trace_hardirqs_on+0x10/0x10 [ 28.932988] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.938425] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.943422] ? alloc_buffer_head+0x20/0x110 [ 28.947720] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.953144] lock_acquire+0x170/0x3f0 [ 28.956923] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.962004] down_read+0x36/0x80 [ 28.965345] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.970424] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.975329] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.979627] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.985315] ? nilfs_mdt_write_page+0x250/0x250 [ 28.989962] nilfs_mdt_read_block+0x7c/0x320 [ 28.994346] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.000208] ? __lock_acquire+0x2190/0x3f20 [ 29.004504] nilfs_mdt_get_block+0xc7/0xb90 [ 29.008804] ? nilfs_mdt_read_block+0x320/0x320 [ 29.013450] ? lock_downgrade+0x740/0x740 [ 29.017576] nilfs_palloc_get_block+0xb2/0x250 [ 29.022137] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.027300] ? nilfs_iget+0x18e/0x810 [ 29.031109] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.036100] nilfs_iget+0x1c2/0x810 [ 29.039702] ? nilfs_iget_locked+0xb0/0xb0 [ 29.043911] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.049084] ? nilfs_detach_log_writer+0x980/0x980 [ 29.053992] ? wait_woken+0x230/0x230 [ 29.057771] nilfs_get_root_dentry+0x24/0x1f0 [ 29.062246] nilfs_mount+0x984/0xd00 [ 29.066022] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.070929] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.076357] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.081350] ? alloc_pages_current+0x15d/0x260 [ 29.085910] ? __lockdep_init_map+0x100/0x560 [ 29.090382] mount_fs+0x92/0x2a0 [ 29.093725] vfs_kern_mount.part.0+0x5b/0x470 [ 29.098198] do_mount+0xe65/0x2a30 [ 29.101725] ? copy_mount_string+0x40/0x40 [ 29.105945] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.110944] ? copy_mnt_ns+0xa30/0xa30 [ 29.114820] ? copy_mount_options+0x1fa/0x2f0 [ 29.119293] ? copy_mnt_ns+0xa30/0xa30 [ 29.123159] SyS_mount+0xa8/0x120 [ 29.126586] ? copy_mnt_ns+0xa30/0xa30 [ 29.130515] do_syscall_64+0x1d5/0x640 [ 29.134398] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.139563] RIP: 0033:0x7f67c36da86a [ 29.143247] RSP: 002b:00007fff1f272f08 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.150932] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f67c36da86a [ 29.158178] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fff1f272f20 [ 29.165422] RBP: 00007fff1f272f20 R08: 00007fff1f272f60 R09: 00005555566a72c0 [ 29.172665] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 29.179962] R13: 00007fff1f272f60 R14: 000000000000003b R15: 0000000020000788 [ 29.188167] kasan: CONFIG_KASAN_INLINE enabled [ 29.195003] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.204391] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.210723] Modules linked in: [ 29.213906] CPU: 1 PID: 7992 Comm: syz-executor110 Not tainted 4.14.295-syzkaller #0 [ 29.222118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.231453] task: ffff8880b301a380 task.stack: ffff8880a6298000 [ 29.237495] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 29.243178] RSP: 0018:ffff8880a629f750 EFLAGS: 00010246 [ 29.248602] RAX: 0000000000000000 RBX: ffff88808ced4098 RCX: 0000000000000000 [ 29.255844] RDX: dffffc0000000000 RSI: 1ffff11014c53e93 RDI: ffff88808ced4158 [ 29.263097] RBP: ffff8880a629f818 R08: 0000000000000001 R09: 0000000000000000 [ 29.270354] R10: 0000000000000001 R11: ffff8880b301a380 R12: 0000000000000002 [ 29.277784] R13: 1ffff11014c53eeb R14: ffff88808ced40d0 R15: 0000000000000001 [ 29.285216] FS: 00005555566a7300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.293423] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.299296] CR2: 000055a6e3458160 CR3: 00000000a9ed6000 CR4: 00000000003406e0 [ 29.306556] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.313808] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.321060] Call Trace: [ 29.323630] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.327931] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.333617] ? nilfs_mdt_write_page+0x250/0x250 [ 29.338264] nilfs_mdt_read_block+0x7c/0x320 [ 29.342649] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.348508] ? __lock_acquire+0x2190/0x3f20 [ 29.352812] nilfs_mdt_get_block+0xc7/0xb90 [ 29.357115] ? nilfs_mdt_read_block+0x320/0x320 [ 29.361761] ? lock_downgrade+0x740/0x740 [ 29.365888] nilfs_palloc_get_block+0xb2/0x250 [ 29.370479] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.375654] ? nilfs_iget+0x18e/0x810 [ 29.379439] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.384438] nilfs_iget+0x1c2/0x810 [ 29.388041] ? nilfs_iget_locked+0xb0/0xb0 [ 29.392338] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.397243] ? nilfs_detach_log_writer+0x980/0x980 [ 29.402151] ? wait_woken+0x230/0x230 [ 29.405936] nilfs_get_root_dentry+0x24/0x1f0 [ 29.410495] nilfs_mount+0x984/0xd00 [ 29.414186] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.419114] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.424539] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.429532] ? alloc_pages_current+0x15d/0x260 [ 29.434090] ? __lockdep_init_map+0x100/0x560 [ 29.438669] mount_fs+0x92/0x2a0 [ 29.442011] vfs_kern_mount.part.0+0x5b/0x470 [ 29.446483] do_mount+0xe65/0x2a30 [ 29.449998] ? copy_mount_string+0x40/0x40 [ 29.454210] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.459199] ? copy_mnt_ns+0xa30/0xa30 [ 29.463066] ? copy_mount_options+0x1fa/0x2f0 [ 29.467624] ? copy_mnt_ns+0xa30/0xa30 [ 29.471484] SyS_mount+0xa8/0x120 [ 29.474910] ? copy_mnt_ns+0xa30/0xa30 [ 29.478798] do_syscall_64+0x1d5/0x640 [ 29.482663] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.487832] RIP: 0033:0x7f67c36da86a [ 29.491528] RSP: 002b:00007fff1f272f08 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.499221] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f67c36da86a [ 29.506473] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fff1f272f20 [ 29.513731] RBP: 00007fff1f272f20 R08: 00007fff1f272f60 R09: 00005555566a72c0 [ 29.521004] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 29.528251] R13: 00007fff1f272f60 R14: 000000000000003b R15: 0000000020000788 [ 29.535501] 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 [ 29.554746] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880a629f750 [ 29.562256] ---[ end trace 74e03c4fd3dd237e ]--- [ 29.567004] Kernel panic - not syncing: Fatal exception [ 29.572520] Kernel Offset: disabled [ 29.576131] Rebooting in 86400 seconds..