[ 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 '10.128.1.124' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.351007] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 29.351636] INFO: trying to register non-static key. [ 29.365917] the code is fine but needs lockdep annotation. [ 29.371510] turning off the locking correctness validator. [ 29.377117] CPU: 0 PID: 7956 Comm: syz-executor377 Not tainted 4.14.295-syzkaller #0 [ 29.384978] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.394456] Call Trace: [ 29.397021] dump_stack+0x1b2/0x281 [ 29.400630] register_lock_class+0x389/0x1180 [ 29.405110] ? static_obj+0x50/0x50 [ 29.408708] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 29.414041] ? save_trace+0xd6/0x290 [ 29.417727] __lock_acquire+0x167/0x3f20 [ 29.421766] ? mem_cgroup_commit_charge+0x17c/0x3b0 [ 29.426755] ? trace_hardirqs_on+0x10/0x10 [ 29.430961] ? trace_hardirqs_on+0x10/0x10 [ 29.435168] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.440591] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.445578] ? alloc_buffer_head+0x20/0x110 [ 29.449885] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.455317] lock_acquire+0x170/0x3f0 [ 29.459102] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.464183] down_read+0x36/0x80 [ 29.467525] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.472614] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 29.477533] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.481829] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.487514] ? nilfs_mdt_write_page+0x250/0x250 [ 29.493284] nilfs_mdt_read_block+0x7c/0x320 [ 29.497664] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.503523] ? finish_task_switch+0x178/0x610 [ 29.507992] ? finish_task_switch+0x14d/0x610 [ 29.512605] ? switch_mm_irqs_off+0x601/0xeb0 [ 29.517078] nilfs_mdt_get_block+0xc7/0xb90 [ 29.521378] ? nilfs_mdt_read_block+0x320/0x320 [ 29.526025] ? lock_downgrade+0x740/0x740 [ 29.530146] nilfs_palloc_get_block+0xb2/0x250 [ 29.534704] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.539877] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.544867] nilfs_iget+0x1c2/0x810 [ 29.548467] ? nilfs_iget_locked+0xb0/0xb0 [ 29.552672] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.557572] ? nilfs_detach_log_writer+0x980/0x980 [ 29.562475] ? wait_woken+0x230/0x230 [ 29.566247] nilfs_get_root_dentry+0x24/0x1f0 [ 29.570801] nilfs_mount+0x984/0xd00 [ 29.574487] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.579386] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.584832] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.589819] ? alloc_pages_current+0x15d/0x260 [ 29.594371] ? __lockdep_init_map+0x100/0x560 [ 29.598839] mount_fs+0x92/0x2a0 [ 29.602177] vfs_kern_mount.part.0+0x5b/0x470 [ 29.606675] do_mount+0xe65/0x2a30 [ 29.610193] ? retint_kernel+0x2d/0x2d [ 29.614052] ? copy_mount_string+0x40/0x40 [ 29.618256] ? memset+0x20/0x40 [ 29.621508] ? copy_mount_options+0x1fa/0x2f0 [ 29.625975] ? copy_mnt_ns+0xa30/0xa30 [ 29.629833] SyS_mount+0xa8/0x120 [ 29.633258] ? copy_mnt_ns+0xa30/0xa30 [ 29.637118] do_syscall_64+0x1d5/0x640 [ 29.640981] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.646139] RIP: 0033:0x7f2cdd6d9fca [ 29.649820] RSP: 002b:00007fffca052578 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 29.657501] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2cdd6d9fca [ 29.664744] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffca052590 [ 29.672073] RBP: 00007fffca052590 R08: 00007fffca0525d0 R09: 0000555555ecc2c0 [ 29.679313] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 29.686554] R13: 00007fffca0525d0 R14: 000000000000005b R15: 0000000020000a88 [ 29.694116] kasan: CONFIG_KASAN_INLINE enabled [ 29.698685] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.706104] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.712320] Modules linked in: [ 29.715496] CPU: 0 PID: 7956 Comm: syz-executor377 Not tainted 4.14.295-syzkaller #0 [ 29.723345] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 29.732672] task: ffff8880b3592500 task.stack: ffff8880917c0000 [ 29.738710] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 29.744392] RSP: 0018:ffff8880917c7750 EFLAGS: 00010246 [ 29.749738] RAX: 0000000000000000 RBX: ffff88808df3c098 RCX: 0000000000000000 [ 29.756982] RDX: dffffc0000000000 RSI: 1ffff110122f8e93 RDI: ffff88808df3c158 [ 29.764223] RBP: ffff8880917c7818 R08: 0000000000000001 R09: 0000000000000000 [ 29.771491] R10: 0000000000000001 R11: ffff8880b3592500 R12: 0000000000000002 [ 29.778735] R13: 1ffff110122f8eeb R14: ffff88808df3c0d0 R15: 0000000000000001 [ 29.785976] FS: 0000555555ecc300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 29.794175] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.800028] CR2: 00007fffca053000 CR3: 00000000b3e70000 CR4: 00000000003406f0 [ 29.807280] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.814520] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.821763] Call Trace: [ 29.824335] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 29.828635] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 29.834318] ? nilfs_mdt_write_page+0x250/0x250 [ 29.838960] nilfs_mdt_read_block+0x7c/0x320 [ 29.843342] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 29.849202] ? finish_task_switch+0x178/0x610 [ 29.853670] ? finish_task_switch+0x14d/0x610 [ 29.858146] ? switch_mm_irqs_off+0x601/0xeb0 [ 29.862618] nilfs_mdt_get_block+0xc7/0xb90 [ 29.867349] ? nilfs_mdt_read_block+0x320/0x320 [ 29.871991] ? lock_downgrade+0x740/0x740 [ 29.876116] nilfs_palloc_get_block+0xb2/0x250 [ 29.880673] nilfs_palloc_get_entry_block+0x17d/0x230 [ 29.885863] nilfs_ifile_get_inode_block+0xb4/0x150 [ 29.890860] nilfs_iget+0x1c2/0x810 [ 29.894470] ? nilfs_iget_locked+0xb0/0xb0 [ 29.898691] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 29.903594] ? nilfs_detach_log_writer+0x980/0x980 [ 29.908499] ? wait_woken+0x230/0x230 [ 29.912275] nilfs_get_root_dentry+0x24/0x1f0 [ 29.916751] nilfs_mount+0x984/0xd00 [ 29.920438] ? nilfs_attach_checkpoint+0x420/0x420 [ 29.925341] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.930767] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 29.935774] ? alloc_pages_current+0x15d/0x260 [ 29.940330] ? __lockdep_init_map+0x100/0x560 [ 29.944798] mount_fs+0x92/0x2a0 [ 29.948143] vfs_kern_mount.part.0+0x5b/0x470 [ 29.952612] do_mount+0xe65/0x2a30 [ 29.956140] ? retint_kernel+0x2d/0x2d [ 29.960005] ? copy_mount_string+0x40/0x40 [ 29.964218] ? memset+0x20/0x40 [ 29.967471] ? copy_mount_options+0x1fa/0x2f0 [ 29.971941] ? copy_mnt_ns+0xa30/0xa30 [ 29.975807] SyS_mount+0xa8/0x120 [ 29.979238] ? copy_mnt_ns+0xa30/0xa30 [ 29.983104] do_syscall_64+0x1d5/0x640 [ 29.986977] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.992143] RIP: 0033:0x7f2cdd6d9fca [ 29.995830] RSP: 002b:00007fffca052578 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 30.003514] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2cdd6d9fca [ 30.010762] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffca052590 [ 30.010766] RBP: 00007fffca052590 R08: 00007fffca0525d0 R09: 0000555555ecc2c0 [ 30.010769] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 30.010772] R13: 00007fffca0525d0 R14: 000000000000005b R15: 0000000020000a88 [ 30.010779] 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 [ 30.058889] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880917c7750 [ 30.066140] ---[ end trace 0d670f8e303cb10d ]--- [ 30.070933] Kernel panic - not syncing: Fatal exception [ 30.076348] Kernel Offset: disabled [ 30.079953] Rebooting in 86400 seconds..