Starting Update UTMP about System Runlevel Changes... [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. 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 '10.128.0.64' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 26.934513] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024) [ 26.955517] INFO: trying to register non-static key. [ 26.956500] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 26.960616] the code is fine but needs lockdep annotation. [ 26.976093] turning off the locking correctness validator. [ 26.981692] CPU: 1 PID: 7968 Comm: syz-executor359 Not tainted 4.14.295-syzkaller #0 [ 26.989549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 26.998887] Call Trace: [ 27.001457] dump_stack+0x1b2/0x281 [ 27.005064] register_lock_class+0x389/0x1180 [ 27.009535] ? static_obj+0x50/0x50 [ 27.013136] ? add_lock_to_list.constprop.0+0x17d/0x330 [ 27.018476] ? save_trace+0xd6/0x290 [ 27.022165] __lock_acquire+0x167/0x3f20 [ 27.026202] ? trace_hardirqs_on+0x10/0x10 [ 27.030412] ? trace_hardirqs_on+0x10/0x10 [ 27.034624] ? alloc_buffer_head+0x20/0x110 [ 27.038921] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.044355] lock_acquire+0x170/0x3f0 [ 27.048135] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.053215] down_read+0x36/0x80 [ 27.056558] ? nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.061639] nilfs_bmap_lookup_at_level+0x6b/0x380 [ 27.066545] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 27.070842] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 27.076528] ? nilfs_mdt_write_page+0x250/0x250 [ 27.081172] nilfs_mdt_read_block+0x7c/0x320 [ 27.085556] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 27.091416] ? __lock_acquire+0x2190/0x3f20 [ 27.095713] nilfs_mdt_get_block+0xc7/0xb90 [ 27.100014] ? nilfs_mdt_read_block+0x320/0x320 [ 27.104660] ? lock_downgrade+0x740/0x740 [ 27.108785] nilfs_palloc_get_block+0xb2/0x250 [ 27.113342] nilfs_palloc_get_entry_block+0x17d/0x230 [ 27.118506] ? nilfs_iget+0x18e/0x810 [ 27.122280] nilfs_ifile_get_inode_block+0xb4/0x150 [ 27.127269] nilfs_iget+0x1c2/0x810 [ 27.130872] ? nilfs_iget_locked+0xb0/0xb0 [ 27.135112] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 27.140014] ? nilfs_detach_log_writer+0x980/0x980 [ 27.144919] ? wait_woken+0x230/0x230 [ 27.148695] nilfs_get_root_dentry+0x24/0x1f0 [ 27.153163] nilfs_mount+0x984/0xd00 [ 27.156850] ? nilfs_attach_checkpoint+0x420/0x420 [ 27.161754] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.167179] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.172169] ? alloc_pages_current+0x15d/0x260 [ 27.176724] ? __lockdep_init_map+0x100/0x560 [ 27.181196] mount_fs+0x92/0x2a0 [ 27.184542] vfs_kern_mount.part.0+0x5b/0x470 [ 27.189014] do_mount+0xe65/0x2a30 [ 27.192531] ? retint_kernel+0x2d/0x2d [ 27.196392] ? copy_mount_string+0x40/0x40 [ 27.200600] ? memset+0x20/0x40 [ 27.203854] ? copy_mount_options+0x1fa/0x2f0 [ 27.208325] ? copy_mnt_ns+0xa30/0xa30 [ 27.212185] SyS_mount+0xa8/0x120 [ 27.215612] ? copy_mnt_ns+0xa30/0xa30 [ 27.219477] do_syscall_64+0x1d5/0x640 [ 27.223339] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.228504] RIP: 0033:0x7eff23b3968a [ 27.232189] RSP: 002b:00007ffc76c242c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.239877] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007eff23b3968a [ 27.247120] RDX: 0000000020000000 RSI: 0000000020000080 RDI: 00007ffc76c242e0 [ 27.254364] RBP: 00007ffc76c242e0 R08: 00007ffc76c24320 R09: 0000555556b092c0 [ 27.261607] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 27.268854] R13: 00007ffc76c24320 R14: 000000000000003b R15: 0000000020000788 [ 27.276716] kasan: CONFIG_KASAN_INLINE enabled [ 27.281299] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.288713] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.294937] Modules linked in: [ 27.298119] CPU: 1 PID: 7968 Comm: syz-executor359 Not tainted 4.14.295-syzkaller #0 [ 27.305972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 27.315300] task: ffff88809db92100 task.stack: ffff8880a2268000 [ 27.321336] RIP: 0010:nilfs_bmap_lookup_at_level+0xa5/0x380 [ 27.327021] RSP: 0018:ffff8880a226f750 EFLAGS: 00010246 [ 27.332358] RAX: 0000000000000000 RBX: ffff88808dafd098 RCX: 0000000000000000 [ 27.339602] RDX: dffffc0000000000 RSI: 1ffff1101444de93 RDI: ffff88808dafd158 [ 27.346845] RBP: ffff8880a226f818 R08: 0000000000000001 R09: 0000000000000000 [ 27.354091] R10: 0000000000000001 R11: ffff88809db92100 R12: 0000000000000002 [ 27.361335] R13: 1ffff1101444deeb R14: ffff88808dafd0d0 R15: 0000000000000001 [ 27.368581] FS: 0000555556b09300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 27.376781] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.382636] CR2: 000055c1ae801b58 CR3: 00000000b07f4000 CR4: 00000000003406e0 [ 27.389882] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.397127] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.404371] Call Trace: [ 27.406937] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 27.411234] nilfs_mdt_submit_block.constprop.0+0x152/0x970 [ 27.416926] ? nilfs_mdt_write_page+0x250/0x250 [ 27.421569] nilfs_mdt_read_block+0x7c/0x320 [ 27.425956] ? nilfs_mdt_submit_block.constprop.0+0x970/0x970 [ 27.431814] ? __lock_acquire+0x2190/0x3f20 [ 27.436110] nilfs_mdt_get_block+0xc7/0xb90 [ 27.440411] ? nilfs_mdt_read_block+0x320/0x320 [ 27.445053] ? lock_downgrade+0x740/0x740 [ 27.449176] nilfs_palloc_get_block+0xb2/0x250 [ 27.453733] nilfs_palloc_get_entry_block+0x17d/0x230 [ 27.458898] ? nilfs_iget+0x18e/0x810 [ 27.462672] nilfs_ifile_get_inode_block+0xb4/0x150 [ 27.467664] nilfs_iget+0x1c2/0x810 [ 27.471264] ? nilfs_iget_locked+0xb0/0xb0 [ 27.475472] ? nilfs_attach_log_writer+0x64d/0x9d0 [ 27.480373] ? nilfs_detach_log_writer+0x980/0x980 [ 27.485278] ? wait_woken+0x230/0x230 [ 27.489056] nilfs_get_root_dentry+0x24/0x1f0 [ 27.493525] nilfs_mount+0x984/0xd00 [ 27.497215] ? nilfs_attach_checkpoint+0x420/0x420 [ 27.502119] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.507543] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 27.512533] ? alloc_pages_current+0x15d/0x260 [ 27.517089] ? __lockdep_init_map+0x100/0x560 [ 27.521556] mount_fs+0x92/0x2a0 [ 27.524900] vfs_kern_mount.part.0+0x5b/0x470 [ 27.529369] do_mount+0xe65/0x2a30 [ 27.532885] ? retint_kernel+0x2d/0x2d [ 27.536748] ? copy_mount_string+0x40/0x40 [ 27.540960] ? memset+0x20/0x40 [ 27.544216] ? copy_mount_options+0x1fa/0x2f0 [ 27.548684] ? copy_mnt_ns+0xa30/0xa30 [ 27.552544] SyS_mount+0xa8/0x120 [ 27.555972] ? copy_mnt_ns+0xa30/0xa30 [ 27.559834] do_syscall_64+0x1d5/0x640 [ 27.563698] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.568866] RIP: 0033:0x7eff23b3968a [ 27.572553] RSP: 002b:00007ffc76c242c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.580234] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007eff23b3968a [ 27.587479] RDX: 0000000020000000 RSI: 0000000020000080 RDI: 00007ffc76c242e0 [ 27.594721] RBP: 00007ffc76c242e0 R08: 00007ffc76c24320 R09: 0000555556b092c0 [ 27.601967] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 27.609211] R13: 00007ffc76c24320 R14: 000000000000003b R15: 0000000020000788 [ 27.616454] 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 [ 27.635525] RIP: nilfs_bmap_lookup_at_level+0xa5/0x380 RSP: ffff8880a226f750 [ 27.643323] ---[ end trace fa255af9f57c13d2 ]--- [ 27.648129] Kernel panic - not syncing: Fatal exception [ 27.653538] Kernel Offset: disabled [ 27.657147] Rebooting in 86400 seconds..