[ 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. Starting Load/Save RF Kill Switch Status... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.45' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.310612] INFO: trying to register non-static key. [ 43.315833] The code is fine but needs lockdep annotation, or maybe [ 43.321331] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 43.322227] you didn't initialize this object before use? [ 43.337518] turning off the locking correctness validator. [ 43.343124] CPU: 0 PID: 8096 Comm: syz-executor332 Not tainted 4.19.211-syzkaller #0 [ 43.350980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 43.360309] Call Trace: [ 43.362877] dump_stack+0x1fc/0x2ef [ 43.366492] register_lock_class+0xe82/0x11c0 [ 43.370971] ? static_obj+0x50/0x50 [ 43.374575] __lock_acquire+0x17d/0x3ff0 [ 43.378616] ? __lock_acquire+0x6de/0x3ff0 [ 43.382831] ? mark_held_locks+0xf0/0xf0 [ 43.386868] ? mark_held_locks+0xf0/0xf0 [ 43.390933] ? lock_downgrade+0x720/0x720 [ 43.395062] ? lock_acquire+0x170/0x3c0 [ 43.399015] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 43.403924] ? check_preemption_disabled+0x41/0x280 [ 43.408917] ? check_preemption_disabled+0x41/0x280 [ 43.413932] ? alloc_buffer_head+0x20/0x130 [ 43.418301] lock_acquire+0x170/0x3c0 [ 43.422195] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 43.427284] down_read+0x36/0x80 [ 43.431158] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 43.436251] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 43.441165] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 43.445470] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 43.451161] ? save_trace+0xd6/0x290 [ 43.454854] ? nilfs_mdt_write_page+0x280/0x280 [ 43.459506] nilfs_mdt_read_block+0x96/0x3e0 [ 43.463897] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 43.469759] ? mark_held_locks+0xf0/0xf0 [ 43.473802] nilfs_mdt_get_block+0xe6/0xd40 [ 43.478104] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 43.482752] ? lock_downgrade+0x720/0x720 [ 43.486876] ? lock_acquire+0x170/0x3c0 [ 43.490828] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 43.495572] nilfs_palloc_get_block+0xc4/0x2b0 [ 43.500153] nilfs_palloc_get_entry_block+0x17b/0x230 [ 43.505337] ? nilfs_iget+0x1cf/0x860 [ 43.509126] nilfs_ifile_get_inode_block+0xbf/0x170 [ 43.514124] nilfs_iget+0x204/0x860 [ 43.517731] ? nilfs_iget_locked+0xd0/0xd0 [ 43.521952] ? nilfs_attach_log_writer+0x68b/0xa30 [ 43.526862] ? wait_woken+0x250/0x250 [ 43.530640] ? nilfs_mount+0x9df/0xe70 [ 43.534520] nilfs_get_root_dentry+0x26/0x250 [ 43.538995] nilfs_mount+0xac8/0xe70 [ 43.542689] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 43.547611] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 43.552611] ? pcpu_alloc+0xc9/0x1190 [ 43.556391] ? alloc_pages_current+0x19b/0x2a0 [ 43.560950] mount_fs+0xa3/0x310 [ 43.564300] vfs_kern_mount.part.0+0x68/0x470 [ 43.568775] do_mount+0x115c/0x2f50 [ 43.572384] ? lock_acquire+0x170/0x3c0 [ 43.576340] ? check_preemption_disabled+0x41/0x280 [ 43.581332] ? copy_mount_string+0x40/0x40 [ 43.585541] ? copy_mount_options+0x59/0x380 [ 43.590013] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 43.595008] ? kmem_cache_alloc_trace+0x323/0x380 [ 43.599826] ? copy_mount_options+0x26f/0x380 [ 43.604298] ksys_mount+0xcf/0x130 [ 43.607816] __x64_sys_mount+0xba/0x150 [ 43.611768] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 43.616334] do_syscall_64+0xf9/0x620 [ 43.620120] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.625286] RIP: 0033:0x7f98a218c6ca [ 43.628979] 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 [ 43.647858] RSP: 002b:00007ffe676c0d98 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 43.655538] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f98a218c6ca [ 43.662783] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffe676c0db0 [ 43.670051] RBP: 00007ffe676c0db0 R08: 00007ffe676c0df0 R09: 00005555564a02c0 [ 43.677295] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 43.684540] R13: 00007ffe676c0df0 R14: 0000000000000039 R15: 0000000020000758 [ 43.692138] kasan: CONFIG_KASAN_INLINE enabled [ 43.696928] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.704528] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.710765] CPU: 0 PID: 8096 Comm: syz-executor332 Not tainted 4.19.211-syzkaller #0 [ 43.718636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 43.727987] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 43.733679] 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 [ 43.752557] RSP: 0018:ffff8880b251f650 EFLAGS: 00010246 [ 43.757893] RAX: 0000000000000000 RBX: ffff88808dba1098 RCX: 0000000000000000 [ 43.765139] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dba1158 [ 43.772383] RBP: ffff8880b251f738 R08: 0000000000000001 R09: 0000000000000000 [ 43.779629] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 43.786878] R13: 1ffff110164a3ecb R14: ffff88808dba10d0 R15: 0000000000000001 [ 43.794127] FS: 00005555564a0300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 43.802327] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.808184] CR2: 0000559fd83d3848 CR3: 00000000b2ac7000 CR4: 00000000003406f0 [ 43.815431] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.822687] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.829934] Call Trace: [ 43.832510] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 43.836818] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 43.842506] ? save_trace+0xd6/0x290 [ 43.846197] ? nilfs_mdt_write_page+0x280/0x280 [ 43.850848] nilfs_mdt_read_block+0x96/0x3e0 [ 43.855236] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 43.861097] ? mark_held_locks+0xf0/0xf0 [ 43.865140] nilfs_mdt_get_block+0xe6/0xd40 [ 43.869440] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 43.874085] ? lock_downgrade+0x720/0x720 [ 43.878208] ? lock_acquire+0x170/0x3c0 [ 43.882158] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 43.886918] nilfs_palloc_get_block+0xc4/0x2b0 [ 43.891481] nilfs_palloc_get_entry_block+0x17b/0x230 [ 43.896655] ? nilfs_iget+0x1cf/0x860 [ 43.900519] nilfs_ifile_get_inode_block+0xbf/0x170 [ 43.905612] nilfs_iget+0x204/0x860 [ 43.909216] ? nilfs_iget_locked+0xd0/0xd0 [ 43.913430] ? nilfs_attach_log_writer+0x68b/0xa30 [ 43.918337] ? wait_woken+0x250/0x250 [ 43.922113] ? nilfs_mount+0x9df/0xe70 [ 43.925979] nilfs_get_root_dentry+0x26/0x250 [ 43.930539] nilfs_mount+0xac8/0xe70 [ 43.934231] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 43.939144] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 43.944137] ? pcpu_alloc+0xc9/0x1190 [ 43.947918] ? alloc_pages_current+0x19b/0x2a0 [ 43.952492] mount_fs+0xa3/0x310 [ 43.955838] vfs_kern_mount.part.0+0x68/0x470 [ 43.960309] do_mount+0x115c/0x2f50 [ 43.963960] ? lock_acquire+0x170/0x3c0 [ 43.967959] ? check_preemption_disabled+0x41/0x280 [ 43.972951] ? copy_mount_string+0x40/0x40 [ 43.977163] ? copy_mount_options+0x59/0x380 [ 43.981550] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 43.986545] ? kmem_cache_alloc_trace+0x323/0x380 [ 43.991366] ? copy_mount_options+0x26f/0x380 [ 43.995838] ksys_mount+0xcf/0x130 [ 43.999358] __x64_sys_mount+0xba/0x150 [ 44.003310] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 44.007867] do_syscall_64+0xf9/0x620 [ 44.011648] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.016814] RIP: 0033:0x7f98a218c6ca [ 44.020506] 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 [ 44.039382] RSP: 002b:00007ffe676c0d98 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 44.047076] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f98a218c6ca [ 44.054330] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffe676c0db0 [ 44.061575] RBP: 00007ffe676c0db0 R08: 00007ffe676c0df0 R09: 00005555564a02c0 [ 44.068826] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 44.076073] R13: 00007ffe676c0df0 R14: 0000000000000039 R15: 0000000020000758 [ 44.083413] Modules linked in: [ 44.086733] ---[ end trace 46dfd9f1368ecf4d ]--- [ 44.091499] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 44.097413] 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 [ 44.116549] RSP: 0018:ffff8880b251f650 EFLAGS: 00010246 [ 44.121900] RAX: 0000000000000000 RBX: ffff88808dba1098 RCX: 0000000000000000 [ 44.129292] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dba1158 [ 44.136608] RBP: ffff8880b251f738 R08: 0000000000000001 R09: 0000000000000000 [ 44.143935] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 44.151187] R13: 1ffff110164a3ecb R14: ffff88808dba10d0 R15: 0000000000000001 [ 44.158755] FS: 00005555564a0300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 44.167042] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.172977] CR2: 0000559fd83d3848 CR3: 00000000b2ac7000 CR4: 00000000003406f0 [ 44.180235] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.187539] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.194856] Kernel panic - not syncing: Fatal exception [ 44.200369] Kernel Offset: disabled [ 44.203979] Rebooting in 86400 seconds..