[ 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 '10.128.0.168' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.963656] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 27.965044] INFO: trying to register non-static key. [ 27.978542] the code is fine but needs lockdep annotation. [ 27.984154] turning off the locking correctness validator. [ 27.989761] CPU: 0 PID: 7977 Comm: syz-executor168 Not tainted 4.14.295-syzkaller #0 [ 27.997612] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.006967] Call Trace: [ 28.009536] dump_stack+0x1b2/0x281 [ 28.013139] register_lock_class+0x389/0x1180 [ 28.017614] ? static_obj+0x50/0x50 [ 28.021214] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 28.026552] ? save_trace+0xd6/0x290 [ 28.030240] __lock_acquire+0x167/0x3f20 [ 28.034279] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 28.039268] ? trace_hardirqs_on+0x10/0x10 [ 28.043472] ? trace_hardirqs_on+0x10/0x10 [ 28.047683] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.053110] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.058124] ? alloc_buffer_head+0x20/0x110 [ 28.062416] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.067845] lock_acquire+0x170/0x3f0 [ 28.071620] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.076708] down_read+0x36/0x80 [ 28.080062] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.085144] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 28.090050] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.094347] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.100029] ? nilfs_mdt_write_page+0x250/0x250 [ 28.104672] nilfs_mdt_read_block+0x7c/0x320 [ 28.109055] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.114925] ? __lock_acquire+0x2190/0x3f20 [ 28.119225] nilfs_mdt_get_block+0xc7/0xb90 [ 28.123523] ? nilfs_mdt_read_block+0x320/0x320 [ 28.128166] ? lock_downgrade+0x740/0x740 [ 28.132313] nilfs_palloc_get_block+0xb2/0x250 [ 28.136869] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.142033] ? nilfs_iget+0x18e/0x810 [ 28.145807] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.150806] nilfs_iget+0x1c2/0x810 [ 28.154411] ? nilfs_iget_locked+0xb0/0xb0 [ 28.158621] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.163524] ? nilfs_detach_log_writer+0x980/0x980 [ 28.168436] ? wait_woken+0x230/0x230 [ 28.172217] nilfs_get_root_dentry+0x24/0x1f0 [ 28.176688] nilfs_mount+0x984/0xd00 [ 28.180377] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.185285] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.190708] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.195698] ? alloc_pages_current+0x15d/0x260 [ 28.200249] ? __lockdep_init_map+0x100/0x560 [ 28.204714] mount_fs+0x92/0x2a0 [ 28.208054] vfs_kern_mount.part.0+0x5b/0x470 [ 28.212521] do_mount+0xe65/0x2a30 [ 28.216043] ? copy_mount_string+0x40/0x40 [ 28.220250] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.225240] ? copy_mnt_ns+0xa30/0xa30 [ 28.229102] ? copy_mount_options+0x1fa/0x2f0 [ 28.233573] ? copy_mnt_ns+0xa30/0xa30 [ 28.237434] SyS_mount+0xa8/0x120 [ 28.240858] ? copy_mnt_ns+0xa30/0xa30 [ 28.244722] do_syscall_64+0x1d5/0x640 [ 28.248582] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.253743] RIP: 0033:0x7fa771a8561a [ 28.257426] RSP: 002b:00007fffc53010e8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.265111] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa771a8561a [ 28.272352] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffc5301100 [ 28.279591] RBP: 00007fffc5301100 R08: 00007fffc5301140 R09: 00005555571842c0 [ 28.286830] R10: 0000000001000010 R11: 0000000000000286 R12: 0000000000000004 [ 28.294072] R13: 00007fffc5301140 R14: 000000000000003b R15: 0000000020000788 [ 28.301915] kasan: CONFIG_KASAN_INLINE enabled [ 28.306515] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.313861] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.320074] Modules linked in: [ 28.323243] CPU: 0 PID: 7977 Comm: syz-executor168 Not tainted 4.14.295-syzkaller #0 [ 28.331092] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 28.340419] task: ffff8880b320e480 task.stack: ffff8880963c0000 [ 28.346451] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 28.352131] RSP: 0018:ffff8880963c7750 EFLAGS: 00010246 [ 28.357463] RAX: 0000000000000000 RBX: ffff88808d76b098 RCX: 0000000000000000 [ 28.364702] RDX: dffffc0000000000 RSI: 1ffff11012c78e93 RDI: ffff88808d76b158 [ 28.372031] RBP: ffff8880963c7818 R08: 0000000000000001 R09: 0000000000000000 [ 28.379272] R10: 0000000000000001 R11: ffff8880b320e480 R12: 0000000000000002 [ 28.386515] R13: 1ffff11012c78eeb R14: ffff88808d76b0d0 R15: 0000000000000001 [ 28.393756] FS: 0000555557184300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 28.401952] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.407805] CR2: 0000000020000004 CR3: 00000000a96c4000 CR4: 00000000003406f0 [ 28.415051] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.422293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.429533] Call Trace: [ 28.432097] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 28.436393] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 28.442082] ? nilfs_mdt_write_page+0x250/0x250 [ 28.446723] nilfs_mdt_read_block+0x7c/0x320 [ 28.451103] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 28.456961] ? __lock_acquire+0x2190/0x3f20 [ 28.461278] nilfs_mdt_get_block+0xc7/0xb90 [ 28.465573] ? nilfs_mdt_read_block+0x320/0x320 [ 28.470220] ? lock_downgrade+0x740/0x740 [ 28.474342] nilfs_palloc_get_block+0xb2/0x250 [ 28.478901] nilfs_palloc_get_entry_block+0x17d/0x230 [ 28.484061] ? nilfs_iget+0x18e/0x810 [ 28.487838] nilfs_ifile_get_inode_block+0xb4/0x150 [ 28.492830] nilfs_iget+0x1c2/0x810 [ 28.496433] ? nilfs_iget_locked+0xb0/0xb0 [ 28.500637] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 28.505538] ? nilfs_detach_log_writer+0x980/0x980 [ 28.510439] ? wait_woken+0x230/0x230 [ 28.514211] nilfs_get_root_dentry+0x24/0x1f0 [ 28.518677] nilfs_mount+0x984/0xd00 [ 28.522364] ? nilfs_attach_checkpoint+0x420/0x420 [ 28.527264] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.532688] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.537678] ? alloc_pages_current+0x15d/0x260 [ 28.542233] ? __lockdep_init_map+0x100/0x560 [ 28.546703] mount_fs+0x92/0x2a0 [ 28.550166] vfs_kern_mount.part.0+0x5b/0x470 [ 28.554901] do_mount+0xe65/0x2a30 [ 28.558418] ? copy_mount_string+0x40/0x40 [ 28.562629] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.567628] ? copy_mnt_ns+0xa30/0xa30 [ 28.571491] ? copy_mount_options+0x1fa/0x2f0 [ 28.575959] ? copy_mnt_ns+0xa30/0xa30 [ 28.579831] SyS_mount+0xa8/0x120 [ 28.583261] ? copy_mnt_ns+0xa30/0xa30 [ 28.587126] do_syscall_64+0x1d5/0x640 [ 28.590992] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.596155] RIP: 0033:0x7fa771a8561a [ 28.599847] RSP: 002b:00007fffc53010e8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 28.607528] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa771a8561a [ 28.614771] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffc5301100 [ 28.622013] RBP: 00007fffc5301100 R08: 00007fffc5301140 R09: 00005555571842c0 [ 28.629258] R10: 0000000001000010 R11: 0000000000000286 R12: 0000000000000004 [ 28.636499] R13: 00007fffc5301140 R14: 000000000000003b R15: 0000000020000788 [ 28.643743] 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 [ 28.662803] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880963c7750 [ 28.670275] ---[ end trace 4cd66ce635dd30b2 ]--- [ 28.675069] Kernel panic - not syncing: Fatal exception [ 28.680483] Kernel Offset: disabled [ 28.684090] Rebooting in 86400 seconds..