[ 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 '10.128.10.18' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.539390] INFO: trying to register non-static key. [ 33.544520] The code is fine but needs lockdep annotation, or maybe [ 33.550926] you didn't initialize this object before use? [ 33.551428] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 33.556447] turning off the locking correctness validator. [ 33.556460] CPU: 1 PID: 8084 Comm: syz-executor329 Not tainted 4.19.211-syzkaller #0 [ 33.556465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.556468] Call Trace: [ 33.556486] dump_stack+0x1fc/0x2ef [ 33.556501] register_lock_class+0xe82/0x11c0 [ 33.556513] ? static_obj+0x50/0x50 [ 33.556532] __lock_acquire+0x17d/0x3ff0 [ 33.607454] ? __lock_acquire+0x6de/0x3ff0 [ 33.611669] ? mark_held_locks+0xf0/0xf0 [ 33.615725] ? mark_held_locks+0xf0/0xf0 [ 33.619771] ? lock_downgrade+0x720/0x720 [ 33.623898] ? lock_acquire+0x170/0x3c0 [ 33.627859] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 33.632771] ? check_preemption_disabled+0x41/0x280 [ 33.637775] ? check_preemption_disabled+0x41/0x280 [ 33.642771] ? alloc_buffer_head+0x20/0x130 [ 33.647079] lock_acquire+0x170/0x3c0 [ 33.650860] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.655944] down_read+0x36/0x80 [ 33.659292] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.664376] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.669285] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.673592] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.679285] ? save_trace+0xd6/0x290 [ 33.682981] ? nilfs_mdt_write_page+0x280/0x280 [ 33.687636] nilfs_mdt_read_block+0x96/0x3e0 [ 33.692028] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.697957] ? mark_held_locks+0xf0/0xf0 [ 33.702007] nilfs_mdt_get_block+0xe6/0xd40 [ 33.706309] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.710959] ? lock_downgrade+0x720/0x720 [ 33.715085] ? lock_acquire+0x170/0x3c0 [ 33.719211] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.724035] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.728601] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.733772] ? nilfs_iget+0x1cf/0x860 [ 33.737552] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.742549] nilfs_iget+0x204/0x860 [ 33.746157] ? nilfs_iget_locked+0xd0/0xd0 [ 33.750381] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.755292] ? wait_woken+0x250/0x250 [ 33.759074] ? nilfs_mount+0x9df/0xe70 [ 33.763117] nilfs_get_root_dentry+0x26/0x250 [ 33.767595] nilfs_mount+0xac8/0xe70 [ 33.771295] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.776228] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.781225] ? pcpu_alloc+0xc9/0x1190 [ 33.785185] ? alloc_pages_current+0x19b/0x2a0 [ 33.789748] mount_fs+0xa3/0x310 [ 33.793102] vfs_kern_mount.part.0+0x68/0x470 [ 33.797577] do_mount+0x115c/0x2f50 [ 33.801186] ? cmp_ex_sort+0xc0/0xc0 [ 33.804883] ? __do_page_fault+0x180/0xd60 [ 33.809099] ? copy_mount_string+0x40/0x40 [ 33.813316] ? copy_mount_options+0x1cd/0x380 [ 33.817792] ? memset+0x20/0x40 [ 33.821056] ? copy_mount_options+0x26f/0x380 [ 33.825533] ksys_mount+0xcf/0x130 [ 33.829056] __x64_sys_mount+0xba/0x150 [ 33.833011] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.837573] do_syscall_64+0xf9/0x620 [ 33.841359] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.846527] RIP: 0033:0x7f021181561a [ 33.850222] 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 [ 33.869107] RSP: 002b:00007fff09bda848 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.876796] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f021181561a [ 33.884163] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff09bda860 [ 33.891410] RBP: 00007fff09bda860 R08: 00007fff09bda8a0 R09: 00005555572812c0 [ 33.898660] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 33.905907] R13: 00007fff09bda8a0 R14: 000000000000003b R15: 0000000020000788 [ 33.913614] kasan: CONFIG_KASAN_INLINE enabled [ 33.918408] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.926062] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.932303] CPU: 1 PID: 8084 Comm: syz-executor329 Not tainted 4.19.211-syzkaller #0 [ 33.940189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.949551] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.955246] 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 [ 33.974130] RSP: 0018:ffff8880927a7650 EFLAGS: 00010246 [ 33.979473] RAX: 0000000000000000 RBX: ffff88808ac2a098 RCX: 0000000000000000 [ 33.986746] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808ac2a158 [ 33.993995] RBP: ffff8880927a7738 R08: 0000000000000001 R09: 0000000000000000 [ 34.001243] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 34.008492] R13: 1ffff110124f4ecb R14: ffff88808ac2a0d0 R15: 0000000000000001 [ 34.015748] FS: 0000555557281300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.023980] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.029850] CR2: 00007fff09bdb000 CR3: 00000000b4d48000 CR4: 00000000003406e0 [ 34.037106] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.044394] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.051641] Call Trace: [ 34.054216] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 34.058522] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 34.064213] ? save_trace+0xd6/0x290 [ 34.067908] ? nilfs_mdt_write_page+0x280/0x280 [ 34.072558] nilfs_mdt_read_block+0x96/0x3e0 [ 34.076948] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 34.082811] ? mark_held_locks+0xf0/0xf0 [ 34.086854] nilfs_mdt_get_block+0xe6/0xd40 [ 34.091159] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 34.095807] ? lock_downgrade+0x720/0x720 [ 34.099933] ? lock_acquire+0x170/0x3c0 [ 34.103886] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 34.108623] nilfs_palloc_get_block+0xc4/0x2b0 [ 34.113185] nilfs_palloc_get_entry_block+0x17b/0x230 [ 34.118353] ? nilfs_iget+0x1cf/0x860 [ 34.122135] nilfs_ifile_get_inode_block+0xbf/0x170 [ 34.127134] nilfs_iget+0x204/0x860 [ 34.130740] ? nilfs_iget_locked+0xd0/0xd0 [ 34.134961] ? nilfs_attach_log_writer+0x68b/0xa30 [ 34.139872] ? wait_woken+0x250/0x250 [ 34.143654] ? nilfs_mount+0x9df/0xe70 [ 34.147523] nilfs_get_root_dentry+0x26/0x250 [ 34.151999] nilfs_mount+0xac8/0xe70 [ 34.155696] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 34.160753] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.165844] ? pcpu_alloc+0xc9/0x1190 [ 34.169666] ? alloc_pages_current+0x19b/0x2a0 [ 34.174227] mount_fs+0xa3/0x310 [ 34.177578] vfs_kern_mount.part.0+0x68/0x470 [ 34.182057] do_mount+0x115c/0x2f50 [ 34.185668] ? cmp_ex_sort+0xc0/0xc0 [ 34.189366] ? __do_page_fault+0x180/0xd60 [ 34.193579] ? copy_mount_string+0x40/0x40 [ 34.197793] ? copy_mount_options+0x1cd/0x380 [ 34.202270] ? memset+0x20/0x40 [ 34.205530] ? copy_mount_options+0x26f/0x380 [ 34.210008] ksys_mount+0xcf/0x130 [ 34.213528] __x64_sys_mount+0xba/0x150 [ 34.217484] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.222045] do_syscall_64+0xf9/0x620 [ 34.225826] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.230998] RIP: 0033:0x7f021181561a [ 34.234692] 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 [ 34.253576] RSP: 002b:00007fff09bda848 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 34.261264] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f021181561a [ 34.268515] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff09bda860 [ 34.275765] RBP: 00007fff09bda860 R08: 00007fff09bda8a0 R09: 00005555572812c0 [ 34.283012] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 34.290262] R13: 00007fff09bda8a0 R14: 000000000000003b R15: 0000000020000788 [ 34.297514] Modules linked in: [ 34.302180] ---[ end trace e4b2135fef27f011 ]--- [ 34.308578] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 34.314301] 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 [ 34.333904] RSP: 0018:ffff8880927a7650 EFLAGS: 00010246 [ 34.339315] RAX: 0000000000000000 RBX: ffff88808ac2a098 RCX: 0000000000000000 [ 34.346746] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808ac2a158 [ 34.353998] RBP: ffff8880927a7738 R08: 0000000000000001 R09: 0000000000000000 [ 34.361293] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 34.368641] R13: 1ffff110124f4ecb R14: ffff88808ac2a0d0 R15: 0000000000000001 [ 34.375945] FS: 0000555557281300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 34.384164] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.390199] CR2: 000056253729d8b8 CR3: 00000000b4d48000 CR4: 00000000003406f0 [ 34.397640] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.404908] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.412210] Kernel panic - not syncing: Fatal exception [ 34.417735] Kernel Offset: disabled [ 34.421348] Rebooting in 86400 seconds..