Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.1' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.338331] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 27.348777] INFO: trying to register non-static key. [ 27.353880] the code is fine but needs lockdep annotation. [ 27.359478] turning off the locking correctness validator. [ 27.365082] CPU: 1 PID: 7986 Comm: syz-executor763 Not tainted 4.14.295-syzkaller #0 [ 27.372935] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 27.382400] Call Trace: [ 27.384977] dump_stack+0x1b2/0x281 [ 27.388580] register_lock_class+0x389/0x1180 [ 27.393048] ? static_obj+0x50/0x50 [ 27.396652] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 27.401992] ? save_trace+0xd6/0x290 [ 27.405684] __lock_acquire+0x167/0x3f20 [ 27.409809] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 27.414799] ? trace_hardirqs_on+0x10/0x10 [ 27.419022] ? trace_hardirqs_on+0x10/0x10 [ 27.423239] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.428670] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.433772] ? alloc_buffer_head+0x20/0x110 [ 27.438074] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.443509] lock_acquire+0x170/0x3f0 [ 27.447287] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.452368] down_read+0x36/0x80 [ 27.455720] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.460885] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.465790] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 27.470095] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 27.475779] ? nilfs_mdt_write_page+0x250/0x250 [ 27.480424] nilfs_mdt_read_block+0x7c/0x320 [ 27.484806] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 27.490663] ? __lock_acquire+0x2190/0x3f20 [ 27.494961] nilfs_mdt_get_block+0xc7/0xb90 [ 27.499258] ? nilfs_mdt_read_block+0x320/0x320 [ 27.503903] ? lock_downgrade+0x740/0x740 [ 27.508032] nilfs_palloc_get_block+0xb2/0x250 [ 27.512593] nilfs_palloc_get_entry_block+0x17d/0x230 [ 27.517754] ? nilfs_iget+0x18e/0x810 [ 27.521528] nilfs_ifile_get_inode_block+0xb4/0x150 [ 27.526516] nilfs_iget+0x1c2/0x810 [ 27.530121] ? nilfs_iget_locked+0xb0/0xb0 [ 27.534333] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 27.539236] ? nilfs_detach_log_writer+0x980/0x980 [ 27.544139] ? wait_woken+0x230/0x230 [ 27.547914] nilfs_get_root_dentry+0x24/0x1f0 [ 27.552385] nilfs_mount+0x984/0xd00 [ 27.556072] ? nilfs_attach_checkpoint+0x420/0x420 [ 27.560978] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.566489] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.571480] ? alloc_pages_current+0x15d/0x260 [ 27.576035] ? __lockdep_init_map+0x100/0x560 [ 27.580509] mount_fs+0x92/0x2a0 [ 27.583851] vfs_kern_mount.part.0+0x5b/0x470 [ 27.588318] do_mount+0xe65/0x2a30 [ 27.591837] ? retint_kernel+0x2d/0x2d [ 27.595699] ? copy_mount_string+0x40/0x40 [ 27.599907] ? memset+0x20/0x40 [ 27.603158] ? copy_mount_options+0x1fa/0x2f0 [ 27.607632] ? copy_mnt_ns+0xa30/0xa30 [ 27.611492] SyS_mount+0xa8/0x120 [ 27.614921] ? copy_mnt_ns+0xa30/0xa30 [ 27.618787] do_syscall_64+0x1d5/0x640 [ 27.622651] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.627818] RIP: 0033:0x7f98325e75da [ 27.631503] RSP: 002b:00007ffcf4114798 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.639182] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f98325e75da [ 27.646428] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffcf41147b0 [ 27.653677] RBP: 00007ffcf41147b0 R08: 00007ffcf41147f0 R09: 00005555574d32c0 [ 27.660920] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 27.668163] R13: 00007ffcf41147f0 R14: 000000000000003a R15: 0000000020000770 [ 27.678036] kasan: CONFIG_KASAN_INLINE enabled [ 27.682633] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.692531] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.698769] Modules linked in: [ 27.701941] CPU: 0 PID: 7986 Comm: syz-executor763 Not tainted 4.14.295-syzkaller #0 [ 27.709796] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 27.719130] task: ffff88809cc8a300 task.stack: ffff88808f160000 [ 27.725169] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 27.730850] RSP: 0018:ffff88808f167750 EFLAGS: 00010246 [ 27.736187] RAX: 0000000000000000 RBX: ffff8880902b4098 RCX: 0000000000000000 [ 27.743431] RDX: dffffc0000000000 RSI: 1ffff11011e2ce93 RDI: ffff8880902b4158 [ 27.750677] RBP: ffff88808f167818 R08: 0000000000000001 R09: 0000000000000000 [ 27.757922] R10: 0000000000000001 R11: ffff88809cc8a300 R12: 0000000000000002 [ 27.765170] R13: 1ffff11011e2ceeb R14: ffff8880902b40d0 R15: 0000000000000001 [ 27.772519] FS: 00005555574d3300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 27.780730] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.786602] CR2: 000055efdadbb0d0 CR3: 00000000b2d8f000 CR4: 00000000003406f0 [ 27.793860] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.801115] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.808488] Call Trace: [ 27.811067] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 27.815370] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 27.821063] ? nilfs_mdt_write_page+0x250/0x250 [ 27.825867] nilfs_mdt_read_block+0x7c/0x320 [ 27.830257] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 27.836125] ? __lock_acquire+0x2190/0x3f20 [ 27.840426] nilfs_mdt_get_block+0xc7/0xb90 [ 27.844744] ? nilfs_mdt_read_block+0x320/0x320 [ 27.849394] ? lock_downgrade+0x740/0x740 [ 27.853523] nilfs_palloc_get_block+0xb2/0x250 [ 27.858084] nilfs_palloc_get_entry_block+0x17d/0x230 [ 27.863401] ? nilfs_iget+0x18e/0x810 [ 27.867183] nilfs_ifile_get_inode_block+0xb4/0x150 [ 27.872180] nilfs_iget+0x1c2/0x810 [ 27.875787] ? nilfs_iget_locked+0xb0/0xb0 [ 27.879997] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 27.884969] ? nilfs_detach_log_writer+0x980/0x980 [ 27.889884] ? wait_woken+0x230/0x230 [ 27.893661] nilfs_get_root_dentry+0x24/0x1f0 [ 27.898135] nilfs_mount+0x984/0xd00 [ 27.901826] ? nilfs_attach_checkpoint+0x420/0x420 [ 27.906731] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.912160] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.917155] ? alloc_pages_current+0x15d/0x260 [ 27.921711] ? __lockdep_init_map+0x100/0x560 [ 27.926183] mount_fs+0x92/0x2a0 [ 27.929633] vfs_kern_mount.part.0+0x5b/0x470 [ 27.934104] do_mount+0xe65/0x2a30 [ 27.937622] ? retint_kernel+0x2d/0x2d [ 27.941486] ? copy_mount_string+0x40/0x40 [ 27.945702] ? memset+0x20/0x40 [ 27.948981] ? copy_mount_options+0x1fa/0x2f0 [ 27.953447] ? copy_mnt_ns+0xa30/0xa30 [ 27.957311] SyS_mount+0xa8/0x120 [ 27.960741] ? copy_mnt_ns+0xa30/0xa30 [ 27.964606] do_syscall_64+0x1d5/0x640 [ 27.968475] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.973900] RIP: 0033:0x7f98325e75da [ 27.977600] RSP: 002b:00007ffcf4114798 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.985281] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f98325e75da [ 27.992529] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffcf41147b0 [ 27.999776] RBP: 00007ffcf41147b0 R08: 00007ffcf41147f0 R09: 00005555574d32c0 [ 28.007020] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 28.014267] R13: 00007ffcf41147f0 R14: 000000000000003a R15: 0000000020000770 [ 28.021516] 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 [ 28.040589] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff88808f167750 [ 28.048003] ---[ end trace d416351a94758810 ]--- [ 28.053171] Kernel panic - not syncing: Fatal exception [ 28.058713] Kernel Offset: disabled [ 28.062326] Rebooting in 86400 seconds..