[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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 '10.128.1.113' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.711739] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 32.711961] INFO: trying to register non-static key. [ 32.726640] The code is fine but needs lockdep annotation, or maybe [ 32.733028] you didn't initialize this object before use? [ 32.738553] turning off the locking correctness validator. [ 32.744163] CPU: 0 PID: 8085 Comm: syz-executor184 Not tainted 4.19.211-syzkaller #0 [ 32.752016] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 32.761430] Call Trace: [ 32.764000] dump_stack+0x1fc/0x2ef [ 32.767608] register_lock_class+0xe82/0x11c0 [ 32.772085] ? static_obj+0x50/0x50 [ 32.775688] __lock_acquire+0x17d/0x3ff0 [ 32.779726] ? __lock_acquire+0x6de/0x3ff0 [ 32.783936] ? mark_held_locks+0xf0/0xf0 [ 32.787976] ? mark_held_locks+0xf0/0xf0 [ 32.792014] ? lock_downgrade+0x720/0x720 [ 32.796138] ? lock_acquire+0x170/0x3c0 [ 32.800092] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 32.805006] ? check_preemption_disabled+0x41/0x280 [ 32.809999] ? check_preemption_disabled+0x41/0x280 [ 32.814991] ? alloc_buffer_head+0x20/0x130 [ 32.819290] lock_acquire+0x170/0x3c0 [ 32.823071] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 32.828151] down_read+0x36/0x80 [ 32.831498] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 32.836674] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 32.841580] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 32.845879] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 32.851571] ? save_trace+0xd6/0x290 [ 32.855275] ? nilfs_mdt_write_page+0x280/0x280 [ 32.859921] nilfs_mdt_read_block+0x96/0x3e0 [ 32.864308] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 32.870167] ? mark_held_locks+0xf0/0xf0 [ 32.874204] nilfs_mdt_get_block+0xe6/0xd40 [ 32.878507] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 32.883149] ? lock_downgrade+0x720/0x720 [ 32.887273] ? lock_acquire+0x170/0x3c0 [ 32.891228] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 32.895957] nilfs_palloc_get_block+0xc4/0x2b0 [ 32.900516] nilfs_palloc_get_entry_block+0x17b/0x230 [ 32.905950] ? nilfs_iget+0x1cf/0x860 [ 32.909723] nilfs_ifile_get_inode_block+0xbf/0x170 [ 32.914716] nilfs_iget+0x204/0x860 [ 32.918317] ? nilfs_iget_locked+0xd0/0xd0 [ 32.922700] ? nilfs_attach_log_writer+0x68b/0xa30 [ 32.927705] ? wait_woken+0x250/0x250 [ 32.931484] ? nilfs_mount+0x9df/0xe70 [ 32.935346] nilfs_get_root_dentry+0x26/0x250 [ 32.939821] nilfs_mount+0xac8/0xe70 [ 32.943511] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 32.948418] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 32.953409] ? pcpu_alloc+0xc9/0x1190 [ 32.957188] ? alloc_pages_current+0x19b/0x2a0 [ 32.961747] mount_fs+0xa3/0x310 [ 32.965091] vfs_kern_mount.part.0+0x68/0x470 [ 32.969560] do_mount+0x115c/0x2f50 [ 32.973163] ? do_raw_spin_unlock+0x171/0x230 [ 32.977637] ? check_preemption_disabled+0x41/0x280 [ 32.982631] ? copy_mount_string+0x40/0x40 [ 32.986845] ? copy_mount_options+0x59/0x380 [ 32.991231] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 32.996222] ? kmem_cache_alloc_trace+0x323/0x380 [ 33.001041] ? copy_mount_options+0x26f/0x380 [ 33.005517] ksys_mount+0xcf/0x130 [ 33.009045] __x64_sys_mount+0xba/0x150 [ 33.012995] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.017551] do_syscall_64+0xf9/0x620 [ 33.021337] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.026501] RIP: 0033:0x7f935ba6a06a [ 33.030201] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 33.049080] RSP: 002b:00007ffc78ef5e88 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.056764] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f935ba6a06a [ 33.064017] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc78ef5ea0 [ 33.071350] RBP: 00007ffc78ef5ea0 R08: 00007ffc78ef5ee0 R09: 00005555556c42c0 [ 33.078598] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 33.085844] R13: 00007ffc78ef5ee0 R14: 000000000000005c R15: 0000000020000aa0 [ 33.093358] kasan: CONFIG_KASAN_INLINE enabled [ 33.098179] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.105536] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.111764] CPU: 0 PID: 8085 Comm: syz-executor184 Not tainted 4.19.211-syzkaller #0 [ 33.119631] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.128974] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.134681] Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 95 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 7d 02 00 00 4c 89 e6 48 89 e9 44 89 fa 48 89 df [ 33.153560] RSP: 0018:ffff88809213f650 EFLAGS: 00010246 [ 33.158897] RAX: 0000000000000000 RBX: ffff88808b438098 RCX: 0000000000000000 [ 33.166142] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808b438158 [ 33.173386] RBP: ffff88809213f738 R08: 0000000000000001 R09: 0000000000000000 [ 33.180633] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 33.187879] R13: 1ffff11012427ecb R14: ffff88808b4380d0 R15: 0000000000000001 [ 33.195129] FS: 00005555556c4300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 33.203329] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.209184] CR2: 00007f935ba40e80 CR3: 00000000966f8000 CR4: 00000000003406f0 [ 33.216429] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.223675] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.231188] Call Trace: [ 33.233755] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.238054] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.243742] ? save_trace+0xd6/0x290 [ 33.247445] ? nilfs_mdt_write_page+0x280/0x280 [ 33.252098] nilfs_mdt_read_block+0x96/0x3e0 [ 33.256485] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.262346] ? mark_held_locks+0xf0/0xf0 [ 33.266403] nilfs_mdt_get_block+0xe6/0xd40 [ 33.270704] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.275352] ? lock_downgrade+0x720/0x720 [ 33.279478] ? lock_acquire+0x170/0x3c0 [ 33.283429] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.288163] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.292737] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.297902] ? nilfs_iget+0x1cf/0x860 [ 33.301687] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.306677] nilfs_iget+0x204/0x860 [ 33.310284] ? nilfs_iget_locked+0xd0/0xd0 [ 33.314496] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.319402] ? wait_woken+0x250/0x250 [ 33.323181] ? nilfs_mount+0x9df/0xe70 [ 33.327047] nilfs_get_root_dentry+0x26/0x250 [ 33.331519] nilfs_mount+0xac8/0xe70 [ 33.335226] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.340146] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.345153] ? pcpu_alloc+0xc9/0x1190 [ 33.348944] ? alloc_pages_current+0x19b/0x2a0 [ 33.353507] mount_fs+0xa3/0x310 [ 33.356856] vfs_kern_mount.part.0+0x68/0x470 [ 33.361345] do_mount+0x115c/0x2f50 [ 33.364961] ? do_raw_spin_unlock+0x171/0x230 [ 33.369440] ? check_preemption_disabled+0x41/0x280 [ 33.374437] ? copy_mount_string+0x40/0x40 [ 33.378652] ? copy_mount_options+0x59/0x380 [ 33.383041] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.388033] ? kmem_cache_alloc_trace+0x323/0x380 [ 33.392856] ? copy_mount_options+0x26f/0x380 [ 33.397334] ksys_mount+0xcf/0x130 [ 33.400871] __x64_sys_mount+0xba/0x150 [ 33.404837] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.409398] do_syscall_64+0xf9/0x620 [ 33.413183] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.418357] RIP: 0033:0x7f935ba6a06a [ 33.422053] Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 33.441029] RSP: 002b:00007ffc78ef5e88 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.448716] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f935ba6a06a [ 33.455962] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc78ef5ea0 [ 33.463209] RBP: 00007ffc78ef5ea0 R08: 00007ffc78ef5ee0 R09: 00005555556c42c0 [ 33.470454] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 33.477701] R13: 00007ffc78ef5ee0 R14: 000000000000005c R15: 0000000020000aa0 [ 33.484958] Modules linked in: [ 33.488258] ---[ end trace 61bac454fd00213a ]--- [ 33.493021] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.498810] Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 95 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 7d 02 00 00 4c 89 e6 48 89 e9 44 89 fa 48 89 df [ 33.517761] RSP: 0018:ffff88809213f650 EFLAGS: 00010246 [ 33.523108] RAX: 0000000000000000 RBX: ffff88808b438098 RCX: 0000000000000000 [ 33.530416] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808b438158 [ 33.537729] RBP: ffff88809213f738 R08: 0000000000000001 R09: 0000000000000000 [ 33.544987] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 33.552294] R13: 1ffff11012427ecb R14: ffff88808b4380d0 R15: 0000000000000001 [ 33.559607] FS: 00005555556c4300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 33.567890] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.573756] CR2: 00007f935ba40e80 CR3: 00000000966f8000 CR4: 00000000003406f0 [ 33.581204] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.588505] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.595764] Kernel panic - not syncing: Fatal exception [ 33.601277] Kernel Offset: disabled [ 33.604885] Rebooting in 86400 seconds..