[ 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 '10.128.0.225' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.329930] INFO: trying to register non-static key. [ 35.335095] The code is fine but needs lockdep annotation, or maybe [ 35.340337] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 35.341498] you didn't initialize this object before use? [ 35.356796] turning off the locking correctness validator. [ 35.362409] CPU: 1 PID: 8118 Comm: syz-executor108 Not tainted 4.19.211-syzkaller #0 [ 35.370369] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 35.379712] Call Trace: [ 35.382294] dump_stack+0x1fc/0x2ef [ 35.385933] register_lock_class+0xe82/0x11c0 [ 35.390423] ? static_obj+0x50/0x50 [ 35.394039] __lock_acquire+0x17d/0x3ff0 [ 35.398099] ? __lock_acquire+0x6de/0x3ff0 [ 35.402320] ? mark_held_locks+0xf0/0xf0 [ 35.406498] ? mark_held_locks+0xf0/0xf0 [ 35.410547] ? lock_downgrade+0x720/0x720 [ 35.414675] ? lock_acquire+0x170/0x3c0 [ 35.418632] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 35.423563] ? check_preemption_disabled+0x41/0x280 [ 35.428560] ? check_preemption_disabled+0x41/0x280 [ 35.433555] ? alloc_buffer_head+0x20/0x130 [ 35.437859] lock_acquire+0x170/0x3c0 [ 35.441637] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.446717] down_read+0x36/0x80 [ 35.450063] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.455146] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.460051] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 35.464351] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 35.470043] ? save_trace+0xd6/0x290 [ 35.473733] ? nilfs_mdt_write_page+0x280/0x280 [ 35.478382] nilfs_mdt_read_block+0x96/0x3e0 [ 35.482787] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 35.488654] ? mark_held_locks+0xf0/0xf0 [ 35.492738] nilfs_mdt_get_block+0xe6/0xd40 [ 35.497043] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 35.501701] ? lock_downgrade+0x720/0x720 [ 35.505831] ? lock_acquire+0x170/0x3c0 [ 35.509781] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 35.514514] nilfs_palloc_get_block+0xc4/0x2b0 [ 35.519076] nilfs_palloc_get_entry_block+0x17b/0x230 [ 35.524242] ? nilfs_iget+0x1cf/0x860 [ 35.528019] nilfs_ifile_get_inode_block+0xbf/0x170 [ 35.533016] nilfs_iget+0x204/0x860 [ 35.536764] ? nilfs_iget_locked+0xd0/0xd0 [ 35.540977] ? nilfs_attach_log_writer+0x68b/0xa30 [ 35.545904] ? wait_woken+0x250/0x250 [ 35.549695] ? nilfs_mount+0x9df/0xe70 [ 35.553593] nilfs_get_root_dentry+0x26/0x250 [ 35.558077] nilfs_mount+0xac8/0xe70 [ 35.561777] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 35.566690] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.571778] ? pcpu_alloc+0xc9/0x1190 [ 35.575558] ? alloc_pages_current+0x19b/0x2a0 [ 35.580130] mount_fs+0xa3/0x310 [ 35.583495] vfs_kern_mount.part.0+0x68/0x470 [ 35.587977] do_mount+0x115c/0x2f50 [ 35.591783] ? cmp_ex_sort+0xc0/0xc0 [ 35.595496] ? __do_page_fault+0x180/0xd60 [ 35.599711] ? copy_mount_string+0x40/0x40 [ 35.603925] ? copy_mount_options+0x1cd/0x380 [ 35.608395] ? memset+0x20/0x40 [ 35.611662] ? copy_mount_options+0x26f/0x380 [ 35.616137] ksys_mount+0xcf/0x130 [ 35.619654] __x64_sys_mount+0xba/0x150 [ 35.623609] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.628167] do_syscall_64+0xf9/0x620 [ 35.632122] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.637299] RIP: 0033:0x7fe05d02b73a [ 35.641000] 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 [ 35.660246] RSP: 002b:00007fff1065b358 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 35.667930] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe05d02b73a [ 35.675179] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fff1065b370 [ 35.682514] RBP: 00007fff1065b370 R08: 00007fff1065b3b0 R09: 000055555684d2c0 [ 35.689777] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 35.697023] R13: 00007fff1065b3b0 R14: 000000000000003a R15: 0000000020000770 [ 35.704619] kasan: CONFIG_KASAN_INLINE enabled [ 35.709200] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.716621] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.722852] CPU: 1 PID: 8118 Comm: syz-executor108 Not tainted 4.19.211-syzkaller #0 [ 35.730748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 35.740092] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 35.745807] 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 [ 35.764869] RSP: 0018:ffff888095377650 EFLAGS: 00010246 [ 35.770349] RAX: 0000000000000000 RBX: ffff88808dbe8098 RCX: 0000000000000000 [ 35.777606] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dbe8158 [ 35.784857] RBP: ffff888095377738 R08: 0000000000000001 R09: 0000000000000000 [ 35.792109] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 35.799355] R13: 1ffff11012a6eecb R14: ffff88808dbe80d0 R15: 0000000000000001 [ 35.806606] FS: 000055555684d300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 35.814810] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.820671] CR2: 00007fff1065c000 CR3: 00000000a4e08000 CR4: 00000000003406e0 [ 35.827925] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.835173] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.842419] Call Trace: [ 35.844996] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 35.849315] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 35.855025] ? save_trace+0xd6/0x290 [ 35.858725] ? nilfs_mdt_write_page+0x280/0x280 [ 35.863378] nilfs_mdt_read_block+0x96/0x3e0 [ 35.867771] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 35.873635] ? mark_held_locks+0xf0/0xf0 [ 35.877693] nilfs_mdt_get_block+0xe6/0xd40 [ 35.881998] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 35.886646] ? lock_downgrade+0x720/0x720 [ 35.890793] ? lock_acquire+0x170/0x3c0 [ 35.894745] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 35.899482] nilfs_palloc_get_block+0xc4/0x2b0 [ 35.904044] nilfs_palloc_get_entry_block+0x17b/0x230 [ 35.909225] ? nilfs_iget+0x1cf/0x860 [ 35.913015] nilfs_ifile_get_inode_block+0xbf/0x170 [ 35.918049] nilfs_iget+0x204/0x860 [ 35.921665] ? nilfs_iget_locked+0xd0/0xd0 [ 35.925886] ? nilfs_attach_log_writer+0x68b/0xa30 [ 35.930793] ? wait_woken+0x250/0x250 [ 35.934573] ? nilfs_mount+0x9df/0xe70 [ 35.938438] nilfs_get_root_dentry+0x26/0x250 [ 35.942910] nilfs_mount+0xac8/0xe70 [ 35.946604] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 35.951591] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.956696] ? pcpu_alloc+0xc9/0x1190 [ 35.960486] ? alloc_pages_current+0x19b/0x2a0 [ 35.965066] mount_fs+0xa3/0x310 [ 35.968415] vfs_kern_mount.part.0+0x68/0x470 [ 35.972890] do_mount+0x115c/0x2f50 [ 35.976497] ? cmp_ex_sort+0xc0/0xc0 [ 35.980190] ? __do_page_fault+0x180/0xd60 [ 35.984419] ? copy_mount_string+0x40/0x40 [ 35.988645] ? copy_mount_options+0x1cd/0x380 [ 35.993129] ? memset+0x20/0x40 [ 35.996395] ? copy_mount_options+0x26f/0x380 [ 36.000871] ksys_mount+0xcf/0x130 [ 36.004392] __x64_sys_mount+0xba/0x150 [ 36.008348] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.012911] do_syscall_64+0xf9/0x620 [ 36.016694] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.021863] RIP: 0033:0x7fe05d02b73a [ 36.025557] 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 [ 36.044436] RSP: 002b:00007fff1065b358 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 36.052129] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe05d02b73a [ 36.059386] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fff1065b370 [ 36.066644] RBP: 00007fff1065b370 R08: 00007fff1065b3b0 R09: 000055555684d2c0 [ 36.073892] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 36.081149] R13: 00007fff1065b3b0 R14: 000000000000003a R15: 0000000020000770 [ 36.088406] Modules linked in: [ 36.091818] ---[ end trace 926f5bed287d892e ]--- [ 36.096584] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 36.102644] 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 [ 36.121902] RSP: 0018:ffff888095377650 EFLAGS: 00010246 [ 36.127261] RAX: 0000000000000000 RBX: ffff88808dbe8098 RCX: 0000000000000000 [ 36.134587] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dbe8158 [ 36.141917] RBP: ffff888095377738 R08: 0000000000000001 R09: 0000000000000000 [ 36.149174] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 36.156505] R13: 1ffff11012a6eecb R14: ffff88808dbe80d0 R15: 0000000000000001 [ 36.163828] FS: 000055555684d300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 36.172364] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.178361] CR2: 00007fff1065c000 CR3: 00000000a4e08000 CR4: 00000000003406e0 [ 36.185686] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.193015] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.200277] Kernel panic - not syncing: Fatal exception [ 36.205969] Kernel Offset: disabled [ 36.209596] Rebooting in 86400 seconds..