[ 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 '10.128.10.26' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 33.722707] INFO: trying to register non-static key. [ 33.727833] The code is fine but needs lockdep annotation, or maybe [ 33.731846] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 33.734215] you didn't initialize this object before use? [ 33.749560] turning off the locking correctness validator. [ 33.755167] CPU: 0 PID: 8097 Comm: syz-executor346 Not tainted 4.19.211-syzkaller #0 [ 33.763020] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.772348] Call Trace: [ 33.774916] dump_stack+0x1fc/0x2ef [ 33.778521] register_lock_class+0xe82/0x11c0 [ 33.782992] ? static_obj+0x50/0x50 [ 33.786612] __lock_acquire+0x17d/0x3ff0 [ 33.790658] ? __lock_acquire+0x6de/0x3ff0 [ 33.794873] ? mark_held_locks+0xf0/0xf0 [ 33.798913] ? mark_held_locks+0xf0/0xf0 [ 33.802949] ? lock_downgrade+0x720/0x720 [ 33.807072] ? lock_acquire+0x170/0x3c0 [ 33.811025] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 33.815932] ? check_preemption_disabled+0x41/0x280 [ 33.821540] ? check_preemption_disabled+0x41/0x280 [ 33.826535] ? alloc_buffer_head+0x20/0x130 [ 33.830835] lock_acquire+0x170/0x3c0 [ 33.834633] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.839716] down_read+0x36/0x80 [ 33.843058] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.848136] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.853064] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.857368] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.863062] ? save_trace+0xd6/0x290 [ 33.866755] ? nilfs_mdt_write_page+0x280/0x280 [ 33.871419] nilfs_mdt_read_block+0x96/0x3e0 [ 33.875806] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.881669] ? mark_held_locks+0xf0/0xf0 [ 33.885708] nilfs_mdt_get_block+0xe6/0xd40 [ 33.890005] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.894752] ? lock_downgrade+0x720/0x720 [ 33.898875] ? lock_acquire+0x170/0x3c0 [ 33.902832] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.907565] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.912133] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.917297] ? nilfs_iget+0x1cf/0x860 [ 33.921084] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.926077] nilfs_iget+0x204/0x860 [ 33.929680] ? nilfs_iget_locked+0xd0/0xd0 [ 33.933894] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.938800] ? wait_woken+0x250/0x250 [ 33.942583] ? nilfs_mount+0x9df/0xe70 [ 33.946445] nilfs_get_root_dentry+0x26/0x250 [ 33.950915] nilfs_mount+0xac8/0xe70 [ 33.954604] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.959511] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.964504] ? pcpu_alloc+0xc9/0x1190 [ 33.968283] ? alloc_pages_current+0x19b/0x2a0 [ 33.972841] mount_fs+0xa3/0x310 [ 33.976187] vfs_kern_mount.part.0+0x68/0x470 [ 33.980659] do_mount+0x115c/0x2f50 [ 33.984264] ? lock_acquire+0x170/0x3c0 [ 33.988222] ? check_preemption_disabled+0x41/0x280 [ 33.993213] ? copy_mount_string+0x40/0x40 [ 33.997427] ? copy_mount_options+0x59/0x380 [ 34.001811] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.006803] ? kmem_cache_alloc_trace+0x323/0x380 [ 34.011622] ? copy_mount_options+0x26f/0x380 [ 34.016096] ksys_mount+0xcf/0x130 [ 34.019614] __x64_sys_mount+0xba/0x150 [ 34.023568] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.028131] do_syscall_64+0xf9/0x620 [ 34.031911] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.037079] RIP: 0033:0x7f7487f0b9da [ 34.040772] 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 [ 34.059648] RSP: 002b:00007ffcd8e0f5b8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 34.067331] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7487f0b9da [ 34.074588] RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007ffcd8e0f5d0 [ 34.081837] RBP: 00007ffcd8e0f5d0 R08: 00007ffcd8e0f610 R09: 0000555556ffe2c0 [ 34.089083] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 34.096327] R13: 00007ffcd8e0f610 R14: 0000000000000044 R15: 0000000020000860 [ 34.104451] kasan: CONFIG_KASAN_INLINE enabled [ 34.109038] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.116669] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.122910] CPU: 0 PID: 8097 Comm: syz-executor346 Not tainted 4.19.211-syzkaller #0 [ 34.130776] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 34.140118] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 34.145811] 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 [ 34.164688] RSP: 0018:ffff8880b280f650 EFLAGS: 00010246 [ 34.170025] RAX: 0000000000000000 RBX: ffff88808d3ca098 RCX: 0000000000000000 [ 34.177285] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808d3ca158 [ 34.184532] RBP: ffff8880b280f738 R08: 0000000000000001 R09: 0000000000000000 [ 34.191787] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 34.199036] R13: 1ffff11016501ecb R14: ffff88808d3ca0d0 R15: 0000000000000001 [ 34.206283] FS: 0000555556ffe300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 34.214483] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.220384] CR2: 000055ff21338938 CR3: 00000000a8ef0000 CR4: 00000000003406f0 [ 34.227634] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.234881] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.242124] Call Trace: [ 34.244693] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 34.248999] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 34.254689] ? save_trace+0xd6/0x290 [ 34.258380] ? nilfs_mdt_write_page+0x280/0x280 [ 34.263026] nilfs_mdt_read_block+0x96/0x3e0 [ 34.267414] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 34.273276] ? mark_held_locks+0xf0/0xf0 [ 34.277316] nilfs_mdt_get_block+0xe6/0xd40 [ 34.281623] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 34.286268] ? lock_downgrade+0x720/0x720 [ 34.290392] ? lock_acquire+0x170/0x3c0 [ 34.294348] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 34.299080] nilfs_palloc_get_block+0xc4/0x2b0 [ 34.303638] nilfs_palloc_get_entry_block+0x17b/0x230 [ 34.308807] ? nilfs_iget+0x1cf/0x860 [ 34.312588] nilfs_ifile_get_inode_block+0xbf/0x170 [ 34.317583] nilfs_iget+0x204/0x860 [ 34.321186] ? nilfs_iget_locked+0xd0/0xd0 [ 34.325399] ? nilfs_attach_log_writer+0x68b/0xa30 [ 34.330302] ? wait_woken+0x250/0x250 [ 34.334079] ? nilfs_mount+0x9df/0xe70 [ 34.337944] nilfs_get_root_dentry+0x26/0x250 [ 34.342419] nilfs_mount+0xac8/0xe70 [ 34.346110] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 34.351017] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.356010] ? pcpu_alloc+0xc9/0x1190 [ 34.359798] ? alloc_pages_current+0x19b/0x2a0 [ 34.364358] mount_fs+0xa3/0x310 [ 34.367705] vfs_kern_mount.part.0+0x68/0x470 [ 34.372265] do_mount+0x115c/0x2f50 [ 34.375870] ? lock_acquire+0x170/0x3c0 [ 34.379824] ? check_preemption_disabled+0x41/0x280 [ 34.384833] ? copy_mount_string+0x40/0x40 [ 34.389047] ? copy_mount_options+0x59/0x380 [ 34.393434] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 34.398601] ? kmem_cache_alloc_trace+0x323/0x380 [ 34.403421] ? copy_mount_options+0x26f/0x380 [ 34.407893] ksys_mount+0xcf/0x130 [ 34.411418] __x64_sys_mount+0xba/0x150 [ 34.415371] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.419929] do_syscall_64+0xf9/0x620 [ 34.423713] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.428881] RIP: 0033:0x7f7487f0b9da [ 34.432573] 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 [ 34.451467] RSP: 002b:00007ffcd8e0f5b8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 34.459246] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f7487f0b9da [ 34.466493] RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007ffcd8e0f5d0 [ 34.473737] RBP: 00007ffcd8e0f5d0 R08: 00007ffcd8e0f610 R09: 0000555556ffe2c0 [ 34.480990] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 34.488325] R13: 00007ffcd8e0f610 R14: 0000000000000044 R15: 0000000020000860 [ 34.495591] Modules linked in: [ 34.499052] ---[ end trace f6301d43b7d39a66 ]--- [ 34.503855] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 34.509571] 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 [ 34.528516] RSP: 0018:ffff8880b280f650 EFLAGS: 00010246 [ 34.533925] RAX: 0000000000000000 RBX: ffff88808d3ca098 RCX: 0000000000000000 [ 34.541180] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808d3ca158 [ 34.548493] RBP: ffff8880b280f738 R08: 0000000000000001 R09: 0000000000000000 [ 34.555796] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 34.563088] R13: 1ffff11016501ecb R14: ffff88808d3ca0d0 R15: 0000000000000001 [ 34.570351] FS: 0000555556ffe300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 34.578602] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.584524] CR2: 000055ff21338938 CR3: 00000000a8ef0000 CR4: 00000000003406f0 [ 34.591816] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.599770] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.607068] Kernel panic - not syncing: Fatal exception [ 34.612593] Kernel Offset: disabled [ 34.616227] Rebooting in 86400 seconds..