[ 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 '10.128.10.27' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.924596] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 35.934657] INFO: trying to register non-static key. [ 35.939757] The code is fine but needs lockdep annotation, or maybe [ 35.946145] you didn't initialize this object before use? [ 35.951654] turning off the locking correctness validator. [ 35.957255] CPU: 1 PID: 8130 Comm: syz-executor202 Not tainted 4.19.211-syzkaller #0 [ 35.965107] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 35.974440] Call Trace: [ 35.977010] dump_stack+0x1fc/0x2ef [ 35.980616] register_lock_class+0xe82/0x11c0 [ 35.985087] ? static_obj+0x50/0x50 [ 35.988694] __lock_acquire+0x17d/0x3ff0 [ 35.992731] ? __lock_acquire+0x6de/0x3ff0 [ 35.996942] ? mark_held_locks+0xf0/0xf0 [ 36.000980] ? mark_held_locks+0xf0/0xf0 [ 36.005017] ? lock_downgrade+0x720/0x720 [ 36.009141] ? lock_acquire+0x170/0x3c0 [ 36.013092] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 36.017996] ? check_preemption_disabled+0x41/0x280 [ 36.022990] ? check_preemption_disabled+0x41/0x280 [ 36.027983] ? alloc_buffer_head+0x20/0x130 [ 36.032281] lock_acquire+0x170/0x3c0 [ 36.036059] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 36.041137] down_read+0x36/0x80 [ 36.044478] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 36.049555] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 36.054460] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 36.058758] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 36.064446] ? save_trace+0xd6/0x290 [ 36.068135] ? nilfs_mdt_write_page+0x280/0x280 [ 36.072782] nilfs_mdt_read_block+0x96/0x3e0 [ 36.077167] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 36.083052] ? mark_held_locks+0xf0/0xf0 [ 36.087089] nilfs_mdt_get_block+0xe6/0xd40 [ 36.091390] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 36.096039] ? lock_downgrade+0x720/0x720 [ 36.100162] ? lock_acquire+0x170/0x3c0 [ 36.104112] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 36.108844] nilfs_palloc_get_block+0xc4/0x2b0 [ 36.113403] nilfs_palloc_get_entry_block+0x17b/0x230 [ 36.118567] ? nilfs_iget+0x1cf/0x860 [ 36.122346] nilfs_ifile_get_inode_block+0xbf/0x170 [ 36.127338] nilfs_iget+0x204/0x860 [ 36.130940] ? nilfs_iget_locked+0xd0/0xd0 [ 36.135153] ? nilfs_attach_log_writer+0x68b/0xa30 [ 36.140056] ? wait_woken+0x250/0x250 [ 36.143831] ? nilfs_mount+0x9df/0xe70 [ 36.147693] nilfs_get_root_dentry+0x26/0x250 [ 36.152161] nilfs_mount+0xac8/0xe70 [ 36.155852] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 36.160758] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.165748] ? pcpu_alloc+0xc9/0x1190 [ 36.169525] ? alloc_pages_current+0x19b/0x2a0 [ 36.174084] mount_fs+0xa3/0x310 [ 36.177428] vfs_kern_mount.part.0+0x68/0x470 [ 36.181902] do_mount+0x115c/0x2f50 [ 36.185507] ? do_raw_spin_unlock+0x171/0x230 [ 36.189977] ? check_preemption_disabled+0x41/0x280 [ 36.194968] ? copy_mount_string+0x40/0x40 [ 36.199175] ? copy_mount_options+0x59/0x380 [ 36.203560] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.208554] ? kmem_cache_alloc_trace+0x323/0x380 [ 36.213372] ? copy_mount_options+0x26f/0x380 [ 36.217844] ksys_mount+0xcf/0x130 [ 36.221367] __x64_sys_mount+0xba/0x150 [ 36.225317] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.229877] do_syscall_64+0xf9/0x620 [ 36.233657] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.238822] RIP: 0033:0x7f011ba925ea [ 36.242512] 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 [ 36.261389] RSP: 002b:00007fffb10189c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 36.269071] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f011ba925ea [ 36.276313] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffb10189e0 [ 36.283557] RBP: 00007fffb10189e0 R08: 00007fffb1018a20 R09: 0000555555cbb2c0 [ 36.290802] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 36.298046] R13: 00007fffb1018a20 R14: 000000000000003b R15: 0000000020000788 [ 36.306388] kasan: CONFIG_KASAN_INLINE enabled [ 36.310970] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.320234] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.326468] CPU: 0 PID: 8130 Comm: syz-executor202 Not tainted 4.19.211-syzkaller #0 [ 36.334332] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 36.345546] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 36.351239] 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 [ 36.370118] RSP: 0018:ffff888094c4f650 EFLAGS: 00010246 [ 36.375456] RAX: 0000000000000000 RBX: ffff88808a8137b0 RCX: 0000000000000000 [ 36.382701] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808a813870 [ 36.389946] RBP: ffff888094c4f738 R08: 0000000000000001 R09: 0000000000000000 [ 36.397188] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 36.404436] R13: 1ffff11012989ecb R14: ffff88808a8137e8 R15: 0000000000000001 [ 36.411684] FS: 0000555555cbb300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 36.419883] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.425738] CR2: 00005648c854ebc0 CR3: 00000000a9321000 CR4: 00000000003406f0 [ 36.432986] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.440234] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.447479] Call Trace: [ 36.450044] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 36.454344] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 36.460032] ? save_trace+0xd6/0x290 [ 36.463721] ? nilfs_mdt_write_page+0x280/0x280 [ 36.468370] nilfs_mdt_read_block+0x96/0x3e0 [ 36.472754] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 36.478613] ? mark_held_locks+0xf0/0xf0 [ 36.482654] nilfs_mdt_get_block+0xe6/0xd40 [ 36.486954] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 36.491600] ? lock_downgrade+0x720/0x720 [ 36.495721] ? lock_acquire+0x170/0x3c0 [ 36.499669] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 36.504402] nilfs_palloc_get_block+0xc4/0x2b0 [ 36.508963] nilfs_palloc_get_entry_block+0x17b/0x230 [ 36.514128] ? nilfs_iget+0x1cf/0x860 [ 36.517904] nilfs_ifile_get_inode_block+0xbf/0x170 [ 36.522896] nilfs_iget+0x204/0x860 [ 36.526498] ? nilfs_iget_locked+0xd0/0xd0 [ 36.530710] ? nilfs_attach_log_writer+0x68b/0xa30 [ 36.535615] ? wait_woken+0x250/0x250 [ 36.539392] ? nilfs_mount+0x9df/0xe70 [ 36.543255] nilfs_get_root_dentry+0x26/0x250 [ 36.547726] nilfs_mount+0xac8/0xe70 [ 36.551429] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 36.556334] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.561325] ? pcpu_alloc+0xc9/0x1190 [ 36.565105] ? alloc_pages_current+0x19b/0x2a0 [ 36.569665] mount_fs+0xa3/0x310 [ 36.573010] vfs_kern_mount.part.0+0x68/0x470 [ 36.577480] do_mount+0x115c/0x2f50 [ 36.581083] ? do_raw_spin_unlock+0x171/0x230 [ 36.585556] ? check_preemption_disabled+0x41/0x280 [ 36.590548] ? copy_mount_string+0x40/0x40 [ 36.594757] ? copy_mount_options+0x59/0x380 [ 36.599141] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.604133] ? kmem_cache_alloc_trace+0x323/0x380 [ 36.608953] ? copy_mount_options+0x26f/0x380 [ 36.613427] ksys_mount+0xcf/0x130 [ 36.616944] __x64_sys_mount+0xba/0x150 [ 36.620895] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.625453] do_syscall_64+0xf9/0x620 [ 36.629231] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.634397] RIP: 0033:0x7f011ba925ea [ 36.638091] 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 [ 36.656966] RSP: 002b:00007fffb10189c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 36.664646] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f011ba925ea [ 36.671896] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffb10189e0 [ 36.679138] RBP: 00007fffb10189e0 R08: 00007fffb1018a20 R09: 0000555555cbb2c0 [ 36.686383] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 36.693626] R13: 00007fffb1018a20 R14: 000000000000003b R15: 0000000020000788 [ 36.700871] Modules linked in: [ 36.706085] ---[ end trace 8f91c3ae19217f87 ]--- [ 36.710858] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 36.725104] 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 [ 36.744098] RSP: 0018:ffff888094c4f650 EFLAGS: 00010246 [ 36.749446] RAX: 0000000000000000 RBX: ffff88808a8137b0 RCX: 0000000000000000 [ 36.756736] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808a813870 [ 36.764058] RBP: ffff888094c4f738 R08: 0000000000000001 R09: 0000000000000000 [ 36.771345] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 36.778609] R13: 1ffff11012989ecb R14: ffff88808a8137e8 R15: 0000000000000001 [ 36.786170] FS: 0000555555cbb300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 36.794434] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.800304] CR2: 0000556a958378b8 CR3: 00000000a9321000 CR4: 00000000003406f0 [ 36.807602] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.814901] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.822210] Kernel panic - not syncing: Fatal exception [ 36.827720] Kernel Offset: disabled [ 36.831327] Rebooting in 86400 seconds..