Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.208' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.910747] INFO: trying to register non-static key. [ 25.915860] the code is fine but needs lockdep annotation. [ 25.921468] turning off the locking correctness validator. [ 25.922501] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 25.927069] CPU: 1 PID: 7959 Comm: syz-executor404 Not tainted 4.14.295-syzkaller #0 [ 25.944695] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 25.954021] Call Trace: [ 25.956586] dump_stack+0x1b2/0x281 [ 25.960202] register_lock_class+0x389/0x1180 [ 25.964672] ? static_obj+0x50/0x50 [ 25.968272] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 25.973606] ? save_trace+0xd6/0x290 [ 25.977412] __lock_acquire+0x167/0x3f20 [ 25.981453] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 25.986448] ? trace_hardirqs_on+0x10/0x10 [ 25.990657] ? trace_hardirqs_on+0x10/0x10 [ 25.994868] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 26.000291] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 26.005282] ? alloc_buffer_head+0x20/0x110 [ 26.009577] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 26.015001] lock_acquire+0x170/0x3f0 [ 26.018777] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 26.023857] down_read+0x36/0x80 [ 26.027218] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 26.032293] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 26.037196] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 26.041492] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 26.047175] ? nilfs_mdt_write_page+0x250/0x250 [ 26.051816] nilfs_mdt_read_block+0x7c/0x320 [ 26.056199] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 26.062055] ? finish_task_switch+0x178/0x610 [ 26.066523] ? finish_task_switch+0x14d/0x610 [ 26.070990] nilfs_mdt_get_block+0xc7/0xb90 [ 26.075283] ? nilfs_mdt_read_block+0x320/0x320 [ 26.079926] ? lock_downgrade+0x740/0x740 [ 26.084046] nilfs_palloc_get_block+0xb2/0x250 [ 26.088599] nilfs_palloc_get_entry_block+0x17d/0x230 [ 26.093761] nilfs_ifile_get_inode_block+0xb4/0x150 [ 26.098751] nilfs_iget+0x1c2/0x810 [ 26.102352] ? nilfs_iget_locked+0xb0/0xb0 [ 26.106557] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 26.111457] ? nilfs_detach_log_writer+0x980/0x980 [ 26.116359] ? wait_woken+0x230/0x230 [ 26.120134] nilfs_get_root_dentry+0x24/0x1f0 [ 26.124603] nilfs_mount+0x984/0xd00 [ 26.128288] ? nilfs_attach_checkpoint+0x420/0x420 [ 26.133192] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 26.138613] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 26.143604] ? alloc_pages_current+0x15d/0x260 [ 26.148157] ? __lockdep_init_map+0x100/0x560 [ 26.152626] mount_fs+0x92/0x2a0 [ 26.155966] vfs_kern_mount.part.0+0x5b/0x470 [ 26.160436] do_mount+0xe65/0x2a30 [ 26.163951] ? copy_mount_string+0x40/0x40 [ 26.168156] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 26.173147] ? copy_mnt_ns+0xa30/0xa30 [ 26.177008] ? copy_mount_options+0x1fa/0x2f0 [ 26.181483] ? copy_mnt_ns+0xa30/0xa30 [ 26.185346] SyS_mount+0xa8/0x120 [ 26.188780] ? copy_mnt_ns+0xa30/0xa30 [ 26.192640] do_syscall_64+0x1d5/0x640 [ 26.196503] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 26.201668] RIP: 0033:0x7efd6427f6da [ 26.205353] RSP: 002b:00007ffed970a4e8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 26.213033] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007efd6427f6da [ 26.220277] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffed970a500 [ 26.227521] RBP: 00007ffed970a500 R08: 00007ffed970a540 R09: 000055555652c2c0 [ 26.234764] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 26.242015] R13: 00007ffed970a540 R14: 000000000000003b R15: 0000000020000788 [ 26.249595] kasan: CONFIG_KASAN_INLINE enabled [ 26.254449] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.261810] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 26.268033] Modules linked in: [ 26.271216] CPU: 1 PID: 7959 Comm: syz-executor404 Not tainted 4.14.295-syzkaller #0 [ 26.279072] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 26.288408] task: ffff8880b4cda540 task.stack: ffff888095dd0000 [ 26.294452] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 26.300137] RSP: 0018:ffff888095dd7750 EFLAGS: 00010246 [ 26.305474] RAX: 0000000000000000 RBX: ffff88808cfb4098 RCX: 0000000000000000 [ 26.312719] RDX: dffffc0000000000 RSI: 1ffff11012bbae93 RDI: ffff88808cfb4158 [ 26.319979] RBP: ffff888095dd7818 R08: 0000000000000001 R09: 0000000000000000 [ 26.327228] R10: 0000000000000001 R11: ffff8880b4cda540 R12: 0000000000000002 [ 26.334483] R13: 1ffff11012bbaeeb R14: ffff88808cfb40d0 R15: 0000000000000001 [ 26.341732] FS: 000055555652c300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 26.349934] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.355790] CR2: 00000000200000c4 CR3: 00000000b5243000 CR4: 00000000003406e0 [ 26.363038] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.370282] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.377526] Call Trace: [ 26.380093] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 26.384390] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 26.390072] ? nilfs_mdt_write_page+0x250/0x250 [ 26.394716] nilfs_mdt_read_block+0x7c/0x320 [ 26.399100] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 26.404958] ? finish_task_switch+0x178/0x610 [ 26.409427] ? finish_task_switch+0x14d/0x610 [ 26.413897] nilfs_mdt_get_block+0xc7/0xb90 [ 26.418196] ? nilfs_mdt_read_block+0x320/0x320 [ 26.422837] ? lock_downgrade+0x740/0x740 [ 26.426960] nilfs_palloc_get_block+0xb2/0x250 [ 26.431516] nilfs_palloc_get_entry_block+0x17d/0x230 [ 26.436680] nilfs_ifile_get_inode_block+0xb4/0x150 [ 26.441685] nilfs_iget+0x1c2/0x810 [ 26.445327] ? nilfs_iget_locked+0xb0/0xb0 [ 26.449546] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 26.454454] ? nilfs_detach_log_writer+0x980/0x980 [ 26.459363] ? wait_woken+0x230/0x230 [ 26.463143] nilfs_get_root_dentry+0x24/0x1f0 [ 26.467620] nilfs_mount+0x984/0xd00 [ 26.471315] ? nilfs_attach_checkpoint+0x420/0x420 [ 26.476221] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 26.481647] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 26.486636] ? alloc_pages_current+0x15d/0x260 [ 26.491198] ? __lockdep_init_map+0x100/0x560 [ 26.495668] mount_fs+0x92/0x2a0 [ 26.499027] vfs_kern_mount.part.0+0x5b/0x470 [ 26.503497] do_mount+0xe65/0x2a30 [ 26.507012] ? copy_mount_string+0x40/0x40 [ 26.511222] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 26.516212] ? copy_mnt_ns+0xa30/0xa30 [ 26.520072] ? copy_mount_options+0x1fa/0x2f0 [ 26.524540] ? copy_mnt_ns+0xa30/0xa30 [ 26.528402] SyS_mount+0xa8/0x120 [ 26.531826] ? copy_mnt_ns+0xa30/0xa30 [ 26.535694] do_syscall_64+0x1d5/0x640 [ 26.539557] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 26.544721] RIP: 0033:0x7efd6427f6da [ 26.548408] RSP: 002b:00007ffed970a4e8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 26.556089] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007efd6427f6da [ 26.563337] RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007ffed970a500 [ 26.570891] RBP: 00007ffed970a500 R08: 00007ffed970a540 R09: 000055555652c2c0 [ 26.578135] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 26.585379] R13: 00007ffed970a540 R14: 000000000000003b R15: 0000000020000788 [ 26.592628] Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 69 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 32 02 00 00 4c 89 e6 48 89 e9 44 89 fa 48 89 [ 26.611715] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff888095dd7750 [ 26.619090] ---[ end trace 7cd5703156d5271c ]--- [ 26.623898] Kernel panic - not syncing: Fatal exception [ 26.629440] Kernel Offset: disabled [ 26.633054] Rebooting in 86400 seconds..