[ 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 '10.128.0.247' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.235457] INFO: trying to register non-static key. [ 34.239783] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 34.240575] The code is fine but needs lockdep annotation, or maybe [ 34.240578] you didn't initialize this object before use? [ 34.240581] turning off the locking correctness validator. [ 34.240592] CPU: 1 PID: 8079 Comm: syz-executor122 Not tainted 4.19.211-syzkaller #0 [ 34.240598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 34.240601] Call Trace: [ 34.240618] dump_stack+0x1fc/0x2ef [ 34.240635] register_lock_class+0xe82/0x11c0 [ 34.295732] ? static_obj+0x50/0x50 [ 34.299342] __lock_acquire+0x17d/0x3ff0 [ 34.303384] ? __lock_acquire+0x6de/0x3ff0 [ 34.307600] ? mark_held_locks+0xf0/0xf0 [ 34.311656] ? mark_held_locks+0xf0/0xf0 [ 34.315693] ? lock_downgrade+0x720/0x720 [ 34.319819] ? lock_acquire+0x170/0x3c0 [ 34.323773] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 34.328683] ? check_preemption_disabled+0x41/0x280 [ 34.333738] ? check_preemption_disabled+0x41/0x280 [ 34.338735] ? alloc_buffer_head+0x20/0x130 [ 34.343036] lock_acquire+0x170/0x3c0 [ 34.346815] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 34.351911] down_read+0x36/0x80 [ 34.355269] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 34.360355] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 34.365261] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 34.369578] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 34.375269] ? save_trace+0xd6/0x290 [ 34.378965] ? nilfs_mdt_write_page+0x280/0x280 [ 34.383615] nilfs_mdt_read_block+0x96/0x3e0 [ 34.388004] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 34.393866] ? mark_held_locks+0xf0/0xf0 [ 34.397909] nilfs_mdt_get_block+0xe6/0xd40 [ 34.402212] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 34.406857] ? lock_downgrade+0x720/0x720 [ 34.410985] ? lock_acquire+0x170/0x3c0 [ 34.414937] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 34.419672] nilfs_palloc_get_block+0xc4/0x2b0 [ 34.424246] nilfs_palloc_get_entry_block+0x17b/0x230 [ 34.429413] ? nilfs_iget+0x1cf/0x860 [ 34.433189] nilfs_ifile_get_inode_block+0xbf/0x170 [ 34.438193] nilfs_iget+0x204/0x860 [ 34.441798] ? nilfs_iget_locked+0xd0/0xd0 [ 34.446026] ? nilfs_attach_log_writer+0x68b/0xa30 [ 34.450934] ? wait_woken+0x250/0x250 [ 34.454715] ? nilfs_mount+0x9df/0xe70 [ 34.458594] nilfs_get_root_dentry+0x26/0x250 [ 34.463076] nilfs_mount+0xac8/0xe70 [ 34.466861] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 34.471774] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.476780] ? pcpu_alloc+0xc9/0x1190 [ 34.480567] ? alloc_pages_current+0x19b/0x2a0 [ 34.485128] mount_fs+0xa3/0x310 [ 34.488475] vfs_kern_mount.part.0+0x68/0x470 [ 34.492952] do_mount+0x115c/0x2f50 [ 34.496559] ? cmp_ex_sort+0xc0/0xc0 [ 34.500253] ? __do_page_fault+0x180/0xd60 [ 34.504468] ? copy_mount_string+0x40/0x40 [ 34.508698] ? copy_mount_options+0x1cd/0x380 [ 34.513192] ? memset+0x20/0x40 [ 34.516458] ? copy_mount_options+0x26f/0x380 [ 34.520965] ksys_mount+0xcf/0x130 [ 34.524487] __x64_sys_mount+0xba/0x150 [ 34.528461] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.533032] do_syscall_64+0xf9/0x620 [ 34.536829] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.542003] RIP: 0033:0x7f8ed850567a [ 34.545698] 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 [ 34.564577] RSP: 002b:00007ffc6825c7f8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 34.572264] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8ed850567a [ 34.579512] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc6825c810 [ 34.586757] RBP: 00007ffc6825c810 R08: 00007ffc6825c850 R09: 00005555568b62c0 [ 34.594001] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 34.601248] R13: 00007ffc6825c850 R14: 0000000000000039 R15: 0000000020000758 [ 34.608628] kasan: CONFIG_KASAN_INLINE enabled [ 34.613368] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.620774] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.627009] CPU: 1 PID: 8079 Comm: syz-executor122 Not tainted 4.19.211-syzkaller #0 [ 34.634883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 34.644223] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 34.649930] 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 [ 34.668816] RSP: 0018:ffff88809394f650 EFLAGS: 00010246 [ 34.674155] RAX: 0000000000000000 RBX: ffff8880b5467098 RCX: 0000000000000000 [ 34.681407] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff8880b5467158 [ 34.688655] RBP: ffff88809394f738 R08: 0000000000000001 R09: 0000000000000000 [ 34.695902] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 34.703159] R13: 1ffff11012729ecb R14: ffff8880b54670d0 R15: 0000000000000001 [ 34.710428] FS: 00005555568b6300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.718646] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.724506] CR2: 00007ffc6825d000 CR3: 000000009770b000 CR4: 00000000003406e0 [ 34.731755] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.739004] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.746249] Call Trace: [ 34.748819] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 34.753123] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 34.758814] ? save_trace+0xd6/0x290 [ 34.762506] ? nilfs_mdt_write_page+0x280/0x280 [ 34.767156] nilfs_mdt_read_block+0x96/0x3e0 [ 34.771546] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 34.777425] ? mark_held_locks+0xf0/0xf0 [ 34.781468] nilfs_mdt_get_block+0xe6/0xd40 [ 34.785771] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 34.790418] ? lock_downgrade+0x720/0x720 [ 34.794543] ? lock_acquire+0x170/0x3c0 [ 34.798493] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 34.803230] nilfs_palloc_get_block+0xc4/0x2b0 [ 34.807792] nilfs_palloc_get_entry_block+0x17b/0x230 [ 34.812962] ? nilfs_iget+0x1cf/0x860 [ 34.816743] nilfs_ifile_get_inode_block+0xbf/0x170 [ 34.821739] nilfs_iget+0x204/0x860 [ 34.825346] ? nilfs_iget_locked+0xd0/0xd0 [ 34.829559] ? nilfs_attach_log_writer+0x68b/0xa30 [ 34.834471] ? wait_woken+0x250/0x250 [ 34.838250] ? nilfs_mount+0x9df/0xe70 [ 34.842119] nilfs_get_root_dentry+0x26/0x250 [ 34.846598] nilfs_mount+0xac8/0xe70 [ 34.850326] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 34.855235] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.860229] ? pcpu_alloc+0xc9/0x1190 [ 34.864010] ? alloc_pages_current+0x19b/0x2a0 [ 34.868568] mount_fs+0xa3/0x310 [ 34.871939] vfs_kern_mount.part.0+0x68/0x470 [ 34.876413] do_mount+0x115c/0x2f50 [ 34.880020] ? cmp_ex_sort+0xc0/0xc0 [ 34.883711] ? __do_page_fault+0x180/0xd60 [ 34.887929] ? copy_mount_string+0x40/0x40 [ 34.892143] ? copy_mount_options+0x1cd/0x380 [ 34.896615] ? memset+0x20/0x40 [ 34.899884] ? copy_mount_options+0x26f/0x380 [ 34.904369] ksys_mount+0xcf/0x130 [ 34.907887] __x64_sys_mount+0xba/0x150 [ 34.911842] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.916406] do_syscall_64+0xf9/0x620 [ 34.920186] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.925355] RIP: 0033:0x7f8ed850567a [ 34.929046] 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 [ 34.947926] RSP: 002b:00007ffc6825c7f8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 34.955610] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8ed850567a [ 34.962856] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffc6825c810 [ 34.970120] RBP: 00007ffc6825c810 R08: 00007ffc6825c850 R09: 00005555568b62c0 [ 34.977366] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 34.984612] R13: 00007ffc6825c850 R14: 0000000000000039 R15: 0000000020000758 [ 34.991867] Modules linked in: [ 34.995239] ---[ end trace 689bd14418974a71 ]--- [ 35.000201] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 35.005917] 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 [ 35.024887] RSP: 0018:ffff88809394f650 EFLAGS: 00010246 [ 35.030314] RAX: 0000000000000000 RBX: ffff8880b5467098 RCX: 0000000000000000 [ 35.037573] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff8880b5467158 [ 35.044861] RBP: ffff88809394f738 R08: 0000000000000001 R09: 0000000000000000 [ 35.052176] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 35.059427] R13: 1ffff11012729ecb R14: ffff8880b54670d0 R15: 0000000000000001 [ 35.066717] FS: 00005555568b6300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 35.075003] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.080901] CR2: 00007ffc6825d000 CR3: 000000009770b000 CR4: 00000000003406e0 [ 35.088166] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.095453] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.102767] Kernel panic - not syncing: Fatal exception [ 35.108277] Kernel Offset: disabled [ 35.111887] Rebooting in 86400 seconds..