[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.103' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.617274] INFO: trying to register non-static key. [ 35.622400] The code is fine but needs lockdep annotation, or maybe [ 35.628795] you didn't initialize this object before use? [ 35.634309] turning off the locking correctness validator. [ 35.635256] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 35.639921] CPU: 1 PID: 8101 Comm: syz-executor701 Not tainted 4.19.211-syzkaller #0 [ 35.657552] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 35.666882] Call Trace: [ 35.669470] dump_stack+0x1fc/0x2ef [ 35.673076] register_lock_class+0xe82/0x11c0 [ 35.677554] ? static_obj+0x50/0x50 [ 35.681160] __lock_acquire+0x17d/0x3ff0 [ 35.685197] ? __lock_acquire+0x6de/0x3ff0 [ 35.689408] ? mark_held_locks+0xf0/0xf0 [ 35.693445] ? mark_held_locks+0xf0/0xf0 [ 35.697484] ? lock_downgrade+0x720/0x720 [ 35.701610] ? lock_acquire+0x170/0x3c0 [ 35.705563] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 35.710471] ? check_preemption_disabled+0x41/0x280 [ 35.715464] ? check_preemption_disabled+0x41/0x280 [ 35.720458] ? alloc_buffer_head+0x20/0x130 [ 35.724755] lock_acquire+0x170/0x3c0 [ 35.728536] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.733615] down_read+0x36/0x80 [ 35.736958] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.742037] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.746945] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 35.751242] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 35.756930] ? save_trace+0xd6/0x290 [ 35.760626] ? nilfs_mdt_write_page+0x280/0x280 [ 35.765272] nilfs_mdt_read_block+0x96/0x3e0 [ 35.769660] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 35.775521] ? mark_held_locks+0xf0/0xf0 [ 35.779561] nilfs_mdt_get_block+0xe6/0xd40 [ 35.783861] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 35.788507] ? lock_downgrade+0x720/0x720 [ 35.792628] ? lock_acquire+0x170/0x3c0 [ 35.796578] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 35.801309] nilfs_palloc_get_block+0xc4/0x2b0 [ 35.805865] nilfs_palloc_get_entry_block+0x17b/0x230 [ 35.811030] ? nilfs_iget+0x1cf/0x860 [ 35.814807] nilfs_ifile_get_inode_block+0xbf/0x170 [ 35.819797] nilfs_iget+0x204/0x860 [ 35.823400] ? nilfs_iget_locked+0xd0/0xd0 [ 35.827613] ? nilfs_attach_log_writer+0x68b/0xa30 [ 35.832524] ? wait_woken+0x250/0x250 [ 35.836303] nilfs_get_root_dentry+0x26/0x250 [ 35.840775] nilfs_mount+0xac8/0xe70 [ 35.844472] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 35.849379] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.854372] ? pcpu_alloc+0xc9/0x1190 [ 35.858149] ? alloc_pages_current+0x19b/0x2a0 [ 35.862708] mount_fs+0xa3/0x310 [ 35.866062] vfs_kern_mount.part.0+0x68/0x470 [ 35.870539] do_mount+0x115c/0x2f50 [ 35.874145] ? lock_acquire+0x170/0x3c0 [ 35.878104] ? check_preemption_disabled+0x41/0x280 [ 35.883109] ? copy_mount_string+0x40/0x40 [ 35.887320] ? copy_mount_options+0x59/0x380 [ 35.891706] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.896699] ? kmem_cache_alloc_trace+0x323/0x380 [ 35.901518] ? copy_mount_options+0x26f/0x380 [ 35.905991] ksys_mount+0xcf/0x130 [ 35.909507] __x64_sys_mount+0xba/0x150 [ 35.913461] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.918019] do_syscall_64+0xf9/0x620 [ 35.921798] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.926963] RIP: 0033:0x7f06e207e55a [ 35.930652] 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 [ 35.949528] RSP: 002b:00007ffc0f19af28 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 35.957208] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f06e207e55a [ 35.964545] RDX: 0000000020000140 RSI: 0000000020000100 RDI: 00007ffc0f19af40 [ 35.971795] RBP: 00007ffc0f19af40 R08: 00007ffc0f19af80 R09: 0000555555c792c0 [ 35.979050] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 35.986302] R13: 00007ffc0f19af80 R14: 000000000000003a R15: 0000000020000770 [ 35.993899] kasan: CONFIG_KASAN_INLINE enabled [ 35.998514] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.005933] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.012156] CPU: 1 PID: 8101 Comm: syz-executor701 Not tainted 4.19.211-syzkaller #0 [ 36.020023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 36.029364] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 36.035052] 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 [ 36.053929] RSP: 0018:ffff8880b2a8f650 EFLAGS: 00010246 [ 36.059268] RAX: 0000000000000000 RBX: ffff88808b03b098 RCX: 0000000000000000 [ 36.066514] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808b03b158 [ 36.073759] RBP: ffff8880b2a8f738 R08: 0000000000000001 R09: 0000000000000000 [ 36.081003] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 36.088421] R13: 1ffff11016551ecb R14: ffff88808b03b0d0 R15: 0000000000000001 [ 36.095671] FS: 0000555555c79300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 36.103885] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.109741] CR2: 000055f0fc2077c4 CR3: 00000000b07a7000 CR4: 00000000003406e0 [ 36.116987] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.124236] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.131479] Call Trace: [ 36.134047] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 36.138348] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 36.144044] ? save_trace+0xd6/0x290 [ 36.147734] ? nilfs_mdt_write_page+0x280/0x280 [ 36.152379] nilfs_mdt_read_block+0x96/0x3e0 [ 36.156781] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 36.162648] ? mark_held_locks+0xf0/0xf0 [ 36.166688] nilfs_mdt_get_block+0xe6/0xd40 [ 36.170989] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 36.175635] ? lock_downgrade+0x720/0x720 [ 36.179758] ? lock_acquire+0x170/0x3c0 [ 36.183784] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 36.188536] nilfs_palloc_get_block+0xc4/0x2b0 [ 36.193108] nilfs_palloc_get_entry_block+0x17b/0x230 [ 36.198276] ? nilfs_iget+0x1cf/0x860 [ 36.202062] nilfs_ifile_get_inode_block+0xbf/0x170 [ 36.207072] nilfs_iget+0x204/0x860 [ 36.210691] ? nilfs_iget_locked+0xd0/0xd0 [ 36.214913] ? nilfs_attach_log_writer+0x68b/0xa30 [ 36.219828] ? wait_woken+0x250/0x250 [ 36.223620] nilfs_get_root_dentry+0x26/0x250 [ 36.228104] nilfs_mount+0xac8/0xe70 [ 36.231804] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 36.236718] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.241712] ? pcpu_alloc+0xc9/0x1190 [ 36.245493] ? alloc_pages_current+0x19b/0x2a0 [ 36.250052] mount_fs+0xa3/0x310 [ 36.253400] vfs_kern_mount.part.0+0x68/0x470 [ 36.257871] do_mount+0x115c/0x2f50 [ 36.261476] ? lock_acquire+0x170/0x3c0 [ 36.265436] ? check_preemption_disabled+0x41/0x280 [ 36.270438] ? copy_mount_string+0x40/0x40 [ 36.274647] ? copy_mount_options+0x59/0x380 [ 36.279029] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.284035] ? kmem_cache_alloc_trace+0x323/0x380 [ 36.288864] ? copy_mount_options+0x26f/0x380 [ 36.293337] ksys_mount+0xcf/0x130 [ 36.296852] __x64_sys_mount+0xba/0x150 [ 36.300804] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.305363] do_syscall_64+0xf9/0x620 [ 36.309143] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.314308] RIP: 0033:0x7f06e207e55a [ 36.317998] 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 [ 36.336917] RSP: 002b:00007ffc0f19af28 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 36.344603] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f06e207e55a [ 36.351847] RDX: 0000000020000140 RSI: 0000000020000100 RDI: 00007ffc0f19af40 [ 36.359097] RBP: 00007ffc0f19af40 R08: 00007ffc0f19af80 R09: 0000555555c792c0 [ 36.366352] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 36.373605] R13: 00007ffc0f19af80 R14: 000000000000003a R15: 0000000020000770 [ 36.380851] Modules linked in: [ 36.384432] ---[ end trace f99e68a8f34f3633 ]--- [ 36.389261] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 36.395026] 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 [ 36.413970] RSP: 0018:ffff8880b2a8f650 EFLAGS: 00010246 [ 36.419387] RAX: 0000000000000000 RBX: ffff88808b03b098 RCX: 0000000000000000 [ 36.426686] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808b03b158 [ 36.433944] RBP: ffff8880b2a8f738 R08: 0000000000000001 R09: 0000000000000000 [ 36.441257] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 36.448560] R13: 1ffff11016551ecb R14: ffff88808b03b0d0 R15: 0000000000000001 [ 36.455877] FS: 0000555555c79300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 36.464087] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.469997] CR2: 000055f0fc2077c4 CR3: 00000000b07a7000 CR4: 00000000003406e0 [ 36.477313] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.484566] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.491846] Kernel panic - not syncing: Fatal exception [ 36.497357] Kernel Offset: disabled [ 36.500966] Rebooting in 86400 seconds..