[ 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 '10.128.0.134' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.138989] INFO: trying to register non-static key. [ 35.144109] The code is fine but needs lockdep annotation, or maybe [ 35.150199] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 35.150505] you didn't initialize this object before use? [ 35.165796] turning off the locking correctness validator. [ 35.171407] CPU: 1 PID: 8080 Comm: syz-executor354 Not tainted 4.19.211-syzkaller #0 [ 35.179268] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 35.188597] Call Trace: [ 35.191173] dump_stack+0x1fc/0x2ef [ 35.194787] register_lock_class+0xe82/0x11c0 [ 35.199266] ? static_obj+0x50/0x50 [ 35.202873] __lock_acquire+0x17d/0x3ff0 [ 35.206915] ? __lock_acquire+0x6de/0x3ff0 [ 35.211132] ? mark_held_locks+0xf0/0xf0 [ 35.215178] ? mark_held_locks+0xf0/0xf0 [ 35.219226] ? lock_downgrade+0x720/0x720 [ 35.223357] ? lock_acquire+0x170/0x3c0 [ 35.227311] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 35.232222] ? check_preemption_disabled+0x41/0x280 [ 35.237236] ? check_preemption_disabled+0x41/0x280 [ 35.242230] ? alloc_buffer_head+0x20/0x130 [ 35.246554] lock_acquire+0x170/0x3c0 [ 35.250336] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.255418] down_read+0x36/0x80 [ 35.258763] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.263843] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 35.268747] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 35.273048] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 35.278737] ? save_trace+0xd6/0x290 [ 35.282437] ? nilfs_mdt_write_page+0x280/0x280 [ 35.287085] nilfs_mdt_read_block+0x96/0x3e0 [ 35.291471] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 35.297332] ? mark_held_locks+0xf0/0xf0 [ 35.301373] nilfs_mdt_get_block+0xe6/0xd40 [ 35.305683] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 35.310331] ? lock_downgrade+0x720/0x720 [ 35.314468] ? lock_acquire+0x170/0x3c0 [ 35.318418] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 35.323150] nilfs_palloc_get_block+0xc4/0x2b0 [ 35.328903] nilfs_palloc_get_entry_block+0x17b/0x230 [ 35.334124] ? nilfs_iget+0x1cf/0x860 [ 35.337910] nilfs_ifile_get_inode_block+0xbf/0x170 [ 35.342945] nilfs_iget+0x204/0x860 [ 35.346575] ? nilfs_iget_locked+0xd0/0xd0 [ 35.350885] ? nilfs_attach_log_writer+0x68b/0xa30 [ 35.355799] ? wait_woken+0x250/0x250 [ 35.359581] ? nilfs_mount+0x9df/0xe70 [ 35.363452] nilfs_get_root_dentry+0x26/0x250 [ 35.367928] nilfs_mount+0xac8/0xe70 [ 35.371621] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 35.376527] ? pcpu_alloc+0xc9/0x1190 [ 35.380305] ? alloc_pages_current+0x19b/0x2a0 [ 35.384861] mount_fs+0xa3/0x310 [ 35.388234] vfs_kern_mount.part.0+0x68/0x470 [ 35.392705] do_mount+0x115c/0x2f50 [ 35.396310] ? lock_acquire+0x170/0x3c0 [ 35.400273] ? check_preemption_disabled+0x41/0x280 [ 35.405273] ? copy_mount_string+0x40/0x40 [ 35.409483] ? copy_mount_options+0x59/0x380 [ 35.413870] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.418863] ? kmem_cache_alloc_trace+0x323/0x380 [ 35.423688] ? copy_mount_options+0x26f/0x380 [ 35.428158] ksys_mount+0xcf/0x130 [ 35.431692] __x64_sys_mount+0xba/0x150 [ 35.435700] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.440279] do_syscall_64+0xf9/0x620 [ 35.444064] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.449238] RIP: 0033:0x7fa6b2f055ca [ 35.452930] 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 [ 35.471810] RSP: 002b:00007ffd68087ba8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 35.479579] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa6b2f055ca [ 35.486824] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd68087bc0 [ 35.494070] RBP: 00007ffd68087bc0 R08: 00007ffd68087c00 R09: 0000555556c342c0 [ 35.501315] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 35.508557] R13: 00007ffd68087c00 R14: 0000000000000039 R15: 0000000020000758 [ 35.516253] kasan: CONFIG_KASAN_INLINE enabled [ 35.520957] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.528368] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.534596] CPU: 1 PID: 8080 Comm: syz-executor354 Not tainted 4.19.211-syzkaller #0 [ 35.542893] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 35.552236] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 35.557922] 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 [ 35.576973] RSP: 0018:ffff888092f3f650 EFLAGS: 00010246 [ 35.582311] RAX: 0000000000000000 RBX: ffff88808b01b098 RCX: 0000000000000000 [ 35.589557] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808b01b158 [ 35.596803] RBP: ffff888092f3f738 R08: 0000000000000001 R09: 0000000000000000 [ 35.604151] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 35.611401] R13: 1ffff110125e7ecb R14: ffff88808b01b0d0 R15: 0000000000000001 [ 35.618656] FS: 0000555556c34300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 35.626862] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.632723] CR2: 00007f1d95336f60 CR3: 0000000099b64000 CR4: 00000000003406e0 [ 35.640090] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.647341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.654701] Call Trace: [ 35.657277] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 35.661580] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 35.667270] ? save_trace+0xd6/0x290 [ 35.670960] ? nilfs_mdt_write_page+0x280/0x280 [ 35.675608] nilfs_mdt_read_block+0x96/0x3e0 [ 35.679998] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 35.685859] ? mark_held_locks+0xf0/0xf0 [ 35.689899] nilfs_mdt_get_block+0xe6/0xd40 [ 35.694227] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 35.698875] ? lock_downgrade+0x720/0x720 [ 35.702999] ? lock_acquire+0x170/0x3c0 [ 35.707032] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 35.711765] nilfs_palloc_get_block+0xc4/0x2b0 [ 35.716337] nilfs_palloc_get_entry_block+0x17b/0x230 [ 35.721503] ? nilfs_iget+0x1cf/0x860 [ 35.725278] nilfs_ifile_get_inode_block+0xbf/0x170 [ 35.730271] nilfs_iget+0x204/0x860 [ 35.733877] ? nilfs_iget_locked+0xd0/0xd0 [ 35.738121] ? nilfs_attach_log_writer+0x68b/0xa30 [ 35.743030] ? wait_woken+0x250/0x250 [ 35.746806] ? nilfs_mount+0x9df/0xe70 [ 35.750673] nilfs_get_root_dentry+0x26/0x250 [ 35.755144] nilfs_mount+0xac8/0xe70 [ 35.758838] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 35.763833] ? pcpu_alloc+0xc9/0x1190 [ 35.767620] ? alloc_pages_current+0x19b/0x2a0 [ 35.772182] mount_fs+0xa3/0x310 [ 35.775528] vfs_kern_mount.part.0+0x68/0x470 [ 35.780001] do_mount+0x115c/0x2f50 [ 35.783608] ? lock_acquire+0x170/0x3c0 [ 35.787561] ? check_preemption_disabled+0x41/0x280 [ 35.792551] ? copy_mount_string+0x40/0x40 [ 35.796765] ? copy_mount_options+0x59/0x380 [ 35.801149] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.806232] ? kmem_cache_alloc_trace+0x323/0x380 [ 35.811052] ? copy_mount_options+0x26f/0x380 [ 35.815525] ksys_mount+0xcf/0x130 [ 35.819050] __x64_sys_mount+0xba/0x150 [ 35.823003] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.827562] do_syscall_64+0xf9/0x620 [ 35.831340] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.836521] RIP: 0033:0x7fa6b2f055ca [ 35.840223] 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 [ 35.859112] RSP: 002b:00007ffd68087ba8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 35.866890] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa6b2f055ca [ 35.874141] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd68087bc0 [ 35.881407] RBP: 00007ffd68087bc0 R08: 00007ffd68087c00 R09: 0000555556c342c0 [ 35.888656] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 35.895992] R13: 00007ffd68087c00 R14: 0000000000000039 R15: 0000000020000758 [ 35.903262] Modules linked in: [ 35.906609] ---[ end trace 5fb729bd2d0fbb81 ]--- [ 35.911455] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 35.917167] 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 [ 35.936123] RSP: 0018:ffff888092f3f650 EFLAGS: 00010246 [ 35.941554] RAX: 0000000000000000 RBX: ffff88808b01b098 RCX: 0000000000000000 [ 35.948939] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808b01b158 [ 35.956201] RBP: ffff888092f3f738 R08: 0000000000000001 R09: 0000000000000000 [ 35.963948] R10: 0000000000000005 R11: ffffffff8c66505b R12: 0000000000000002 [ 35.971433] R13: 1ffff110125e7ecb R14: ffff88808b01b0d0 R15: 0000000000000001 [ 35.978729] FS: 0000555556c34300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 35.987438] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.993314] CR2: 00007f1d95336f60 CR3: 0000000099b64000 CR4: 00000000003406e0 [ 36.000604] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.007947] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.015210] Kernel panic - not syncing: Fatal exception [ 36.020697] Kernel Offset: disabled [ 36.024391] Rebooting in 86400 seconds..