[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.101' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.034515] INFO: trying to register non-static key. [ 35.037891] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 35.039631] The code is fine but needs lockdep annotation, or maybe [ 35.055802] you didn't initialize this object before use? [ 35.061337] turning off the locking correctness validator. [ 35.066961] CPU: 0 PID: 8076 Comm: syz-executor162 Not tainted 4.19.211-syzkaller #0 [ 35.074830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 35.084197] Call Trace: [ 35.086777] dump_stack+0x1fc/0x2ef [ 35.090401] register_lock_class+0xe82/0x11c0 [ 35.094895] ? static_obj+0x50/0x50 [ 35.098529] __lock_acquire+0x17d/0x3ff0 [ 35.102577] ? __lock_acquire+0x6de/0x3ff0 [ 35.106796] ? mark_held_locks+0xf0/0xf0 [ 35.110839] ? mark_held_locks+0xf0/0xf0 [ 35.114886] ? lock_downgrade+0x720/0x720 [ 35.119016] ? lock_acquire+0x170/0x3c0 [ 35.122976] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 35.127901] ? check_preemption_disabled+0x41/0x280 [ 35.132928] ? check_preemption_disabled+0x41/0x280 [ 35.137931] ? alloc_buffer_head+0x20/0x130 [ 35.142245] lock_acquire+0x170/0x3c0 [ 35.146037] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.151126] down_read+0x36/0x80 [ 35.154482] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.159566] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.164475] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 35.168776] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 35.174466] ? save_trace+0xd6/0x290 [ 35.178157] ? nilfs_mdt_write_page+0x280/0x280 [ 35.182806] nilfs_mdt_read_block+0x96/0x3e0 [ 35.187195] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 35.193056] ? mark_held_locks+0xf0/0xf0 [ 35.197106] nilfs_mdt_get_block+0xe6/0xd40 [ 35.201405] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 35.206053] ? lock_downgrade+0x720/0x720 [ 35.210177] ? lock_acquire+0x170/0x3c0 [ 35.214129] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 35.218861] nilfs_palloc_get_block+0xc4/0x2b0 [ 35.223418] nilfs_palloc_get_entry_block+0x17b/0x230 [ 35.228584] ? nilfs_iget+0x1cf/0x860 [ 35.232361] nilfs_ifile_get_inode_block+0xbf/0x170 [ 35.237353] nilfs_iget+0x204/0x860 [ 35.240963] ? nilfs_iget_locked+0xd0/0xd0 [ 35.245176] ? nilfs_attach_log_writer+0x68b/0xa30 [ 35.250080] ? wait_woken+0x250/0x250 [ 35.253859] ? nilfs_mount+0x9df/0xe70 [ 35.257721] nilfs_get_root_dentry+0x26/0x250 [ 35.262193] nilfs_mount+0xac8/0xe70 [ 35.265886] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 35.270794] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.275786] ? pcpu_alloc+0xc9/0x1190 [ 35.279562] ? alloc_pages_current+0x19b/0x2a0 [ 35.284119] mount_fs+0xa3/0x310 [ 35.287467] vfs_kern_mount.part.0+0x68/0x470 [ 35.291949] do_mount+0x115c/0x2f50 [ 35.295555] ? do_raw_spin_unlock+0x171/0x230 [ 35.300027] ? check_preemption_disabled+0x41/0x280 [ 35.305018] ? copy_mount_string+0x40/0x40 [ 35.309230] ? copy_mount_options+0x59/0x380 [ 35.313618] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.318716] ? kmem_cache_alloc_trace+0x323/0x380 [ 35.323534] ? copy_mount_options+0x26f/0x380 [ 35.328004] ksys_mount+0xcf/0x130 [ 35.331565] __x64_sys_mount+0xba/0x150 [ 35.335521] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.340117] do_syscall_64+0xf9/0x620 [ 35.343903] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.349071] RIP: 0033:0x7fe2bfcdb50a [ 35.352766] 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 [ 35.371750] RSP: 002b:00007ffc150107c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 35.379439] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe2bfcdb50a [ 35.386685] RDX: 0000000020000140 RSI: 0000000020000100 RDI: 00007ffc150107e0 [ 35.393933] RBP: 00007ffc150107e0 R08: 00007ffc15010820 R09: 00005555556632c0 [ 35.401179] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 35.408428] R13: 00007ffc15010820 R14: 0000000000000037 R15: 0000000020000728 [ 35.415986] kasan: CONFIG_KASAN_INLINE enabled [ 35.420632] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.428215] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.434450] CPU: 0 PID: 8076 Comm: syz-executor162 Not tainted 4.19.211-syzkaller #0 [ 35.442326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 35.451683] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 35.457370] 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 [ 35.476247] RSP: 0018:ffff888090dcf650 EFLAGS: 00010246 [ 35.481588] RAX: 0000000000000000 RBX: ffff88808dbac7b0 RCX: 0000000000000000 [ 35.488832] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dbac870 [ 35.496110] RBP: ffff888090dcf738 R08: 0000000000000001 R09: 0000000000000000 [ 35.503370] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 35.510621] R13: 1ffff110121b9ecb R14: ffff88808dbac7e8 R15: 0000000000000001 [ 35.517958] FS: 0000555555663300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.526161] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.532019] CR2: 000055922c9bb988 CR3: 000000009d178000 CR4: 00000000003406f0 [ 35.539267] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.546513] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.553756] Call Trace: [ 35.556324] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 35.560628] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 35.566332] ? save_trace+0xd6/0x290 [ 35.570031] ? nilfs_mdt_write_page+0x280/0x280 [ 35.574678] nilfs_mdt_read_block+0x96/0x3e0 [ 35.579067] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 35.584944] ? mark_held_locks+0xf0/0xf0 [ 35.588994] nilfs_mdt_get_block+0xe6/0xd40 [ 35.593299] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 35.597952] ? lock_downgrade+0x720/0x720 [ 35.602085] ? lock_acquire+0x170/0x3c0 [ 35.606050] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 35.610790] nilfs_palloc_get_block+0xc4/0x2b0 [ 35.615361] nilfs_palloc_get_entry_block+0x17b/0x230 [ 35.620530] ? nilfs_iget+0x1cf/0x860 [ 35.624308] nilfs_ifile_get_inode_block+0xbf/0x170 [ 35.629302] nilfs_iget+0x204/0x860 [ 35.632912] ? nilfs_iget_locked+0xd0/0xd0 [ 35.637127] ? nilfs_attach_log_writer+0x68b/0xa30 [ 35.642040] ? wait_woken+0x250/0x250 [ 35.645818] ? nilfs_mount+0x9df/0xe70 [ 35.649683] nilfs_get_root_dentry+0x26/0x250 [ 35.654155] nilfs_mount+0xac8/0xe70 [ 35.657846] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 35.662754] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.667749] ? pcpu_alloc+0xc9/0x1190 [ 35.671615] ? alloc_pages_current+0x19b/0x2a0 [ 35.676189] mount_fs+0xa3/0x310 [ 35.679546] vfs_kern_mount.part.0+0x68/0x470 [ 35.684027] do_mount+0x115c/0x2f50 [ 35.687644] ? do_raw_spin_unlock+0x171/0x230 [ 35.692134] ? check_preemption_disabled+0x41/0x280 [ 35.697229] ? copy_mount_string+0x40/0x40 [ 35.701455] ? copy_mount_options+0x59/0x380 [ 35.705845] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.710841] ? kmem_cache_alloc_trace+0x323/0x380 [ 35.715668] ? copy_mount_options+0x26f/0x380 [ 35.720153] ksys_mount+0xcf/0x130 [ 35.723677] __x64_sys_mount+0xba/0x150 [ 35.727636] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.732199] do_syscall_64+0xf9/0x620 [ 35.735987] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.741153] RIP: 0033:0x7fe2bfcdb50a [ 35.744853] 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 [ 35.763731] RSP: 002b:00007ffc150107c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 35.771413] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe2bfcdb50a [ 35.778659] RDX: 0000000020000140 RSI: 0000000020000100 RDI: 00007ffc150107e0 [ 35.785903] RBP: 00007ffc150107e0 R08: 00007ffc15010820 R09: 00005555556632c0 [ 35.793154] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 35.800400] R13: 00007ffc15010820 R14: 0000000000000037 R15: 0000000020000728 [ 35.807647] Modules linked in: [ 35.810892] ---[ end trace 327a65878992a2e7 ]--- [ 35.815656] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 35.821417] 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 [ 35.840361] RSP: 0018:ffff888090dcf650 EFLAGS: 00010246 [ 35.845712] RAX: 0000000000000000 RBX: ffff88808dbac7b0 RCX: 0000000000000000 [ 35.853008] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dbac870 [ 35.860307] RBP: ffff888090dcf738 R08: 0000000000000001 R09: 0000000000000000 [ 35.867622] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 35.874887] R13: 1ffff110121b9ecb R14: ffff88808dbac7e8 R15: 0000000000000001 [ 35.882199] FS: 0000555555663300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.890457] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.896322] CR2: 000055922c9bb988 CR3: 000000009d178000 CR4: 00000000003406f0 [ 35.903615] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.910920] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.918223] Kernel panic - not syncing: Fatal exception [ 35.923658] Kernel Offset: disabled [ 35.927267] Rebooting in 86400 seconds..