[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.13' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 36.457689] INFO: trying to register non-static key. [ 36.462828] The code is fine but needs lockdep annotation, or maybe [ 36.469440] you didn't initialize this object before use? [ 36.469831] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 36.475057] turning off the locking correctness validator. [ 36.475071] CPU: 0 PID: 8117 Comm: syz-executor169 Not tainted 4.19.211-syzkaller #0 [ 36.475076] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 36.475080] Call Trace: [ 36.475099] dump_stack+0x1fc/0x2ef [ 36.475114] register_lock_class+0xe82/0x11c0 [ 36.475135] ? static_obj+0x50/0x50 [ 36.523147] __lock_acquire+0x17d/0x3ff0 [ 36.527192] ? __lock_acquire+0x6de/0x3ff0 [ 36.531406] ? mark_held_locks+0xf0/0xf0 [ 36.535457] ? mark_held_locks+0xf0/0xf0 [ 36.539497] ? lock_downgrade+0x720/0x720 [ 36.543620] ? lock_acquire+0x170/0x3c0 [ 36.547572] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 36.553256] ? check_preemption_disabled+0x41/0x280 [ 36.559268] ? check_preemption_disabled+0x41/0x280 [ 36.564590] ? alloc_buffer_head+0x20/0x130 [ 36.568907] lock_acquire+0x170/0x3c0 [ 36.572695] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 36.577826] down_read+0x36/0x80 [ 36.581183] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 36.586354] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 36.591282] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 36.595609] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 36.601409] ? save_trace+0xd6/0x290 [ 36.605115] ? nilfs_mdt_write_page+0x280/0x280 [ 36.609772] nilfs_mdt_read_block+0x96/0x3e0 [ 36.614198] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 36.620460] ? mark_held_locks+0xf0/0xf0 [ 36.624511] nilfs_mdt_get_block+0xe6/0xd40 [ 36.628842] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 36.633517] ? lock_downgrade+0x720/0x720 [ 36.638036] ? lock_acquire+0x170/0x3c0 [ 36.642290] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 36.647033] nilfs_palloc_get_block+0xc4/0x2b0 [ 36.651611] nilfs_palloc_get_entry_block+0x17b/0x230 [ 36.656793] ? nilfs_iget+0x1cf/0x860 [ 36.660762] nilfs_ifile_get_inode_block+0xbf/0x170 [ 36.665808] nilfs_iget+0x204/0x860 [ 36.669520] ? nilfs_iget_locked+0xd0/0xd0 [ 36.674104] ? nilfs_attach_log_writer+0x68b/0xa30 [ 36.679211] ? wait_woken+0x250/0x250 [ 36.683082] ? nilfs_mount+0x9df/0xe70 [ 36.687036] nilfs_get_root_dentry+0x26/0x250 [ 36.691516] nilfs_mount+0xac8/0xe70 [ 36.695404] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 36.700324] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.705405] ? pcpu_alloc+0xc9/0x1190 [ 36.709183] ? alloc_pages_current+0x19b/0x2a0 [ 36.713758] mount_fs+0xa3/0x310 [ 36.717112] vfs_kern_mount.part.0+0x68/0x470 [ 36.721596] do_mount+0x115c/0x2f50 [ 36.725206] ? lock_acquire+0x170/0x3c0 [ 36.729161] ? check_preemption_disabled+0x41/0x280 [ 36.734190] ? copy_mount_string+0x40/0x40 [ 36.738436] ? copy_mount_options+0x59/0x380 [ 36.742843] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.747875] ? kmem_cache_alloc_trace+0x323/0x380 [ 36.752710] ? copy_mount_options+0x26f/0x380 [ 36.757547] ksys_mount+0xcf/0x130 [ 36.761083] __x64_sys_mount+0xba/0x150 [ 36.765155] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.769733] do_syscall_64+0xf9/0x620 [ 36.773522] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.778714] RIP: 0033:0x7f5a3151371a [ 36.782410] 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 [ 36.801297] RSP: 002b:00007ffdc0e9f3a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 36.809339] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5a3151371a [ 36.816695] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffdc0e9f3c0 [ 36.824291] RBP: 00007ffdc0e9f3c0 R08: 00007ffdc0e9f400 R09: 00005555566182c0 [ 36.832108] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 36.841251] R13: 00007ffdc0e9f400 R14: 0000000000000039 R15: 0000000020000758 [ 36.848855] kasan: CONFIG_KASAN_INLINE enabled [ 36.853434] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.861087] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 36.867506] CPU: 0 PID: 8117 Comm: syz-executor169 Not tainted 4.19.211-syzkaller #0 [ 36.875391] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 36.884824] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 36.890512] 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 [ 36.910000] RSP: 0018:ffff888092317650 EFLAGS: 00010246 [ 36.915353] RAX: 0000000000000000 RBX: ffff88808dded098 RCX: 0000000000000000 [ 36.922629] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dded158 [ 36.929883] RBP: ffff888092317738 R08: 0000000000000001 R09: 0000000000000000 [ 36.937209] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 36.944578] R13: 1ffff11012462ecb R14: ffff88808dded0d0 R15: 0000000000000001 [ 36.951949] FS: 0000555556618300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 36.960152] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.966010] CR2: 00007f7d34150f60 CR3: 00000000aac15000 CR4: 00000000003406f0 [ 36.973288] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.980647] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.987985] Call Trace: [ 36.990645] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 36.995265] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 37.000995] ? save_trace+0xd6/0x290 [ 37.004699] ? nilfs_mdt_write_page+0x280/0x280 [ 37.009366] nilfs_mdt_read_block+0x96/0x3e0 [ 37.013766] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 37.019743] ? mark_held_locks+0xf0/0xf0 [ 37.023819] nilfs_mdt_get_block+0xe6/0xd40 [ 37.028161] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 37.032825] ? lock_downgrade+0x720/0x720 [ 37.036955] ? lock_acquire+0x170/0x3c0 [ 37.040953] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 37.045714] nilfs_palloc_get_block+0xc4/0x2b0 [ 37.050281] nilfs_palloc_get_entry_block+0x17b/0x230 [ 37.055466] ? nilfs_iget+0x1cf/0x860 [ 37.059292] nilfs_ifile_get_inode_block+0xbf/0x170 [ 37.064313] nilfs_iget+0x204/0x860 [ 37.067938] ? nilfs_iget_locked+0xd0/0xd0 [ 37.072435] ? nilfs_attach_log_writer+0x68b/0xa30 [ 37.077794] ? wait_woken+0x250/0x250 [ 37.082239] ? nilfs_mount+0x9df/0xe70 [ 37.086331] nilfs_get_root_dentry+0x26/0x250 [ 37.091338] nilfs_mount+0xac8/0xe70 [ 37.095490] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 37.100646] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 37.105941] ? pcpu_alloc+0xc9/0x1190 [ 37.109815] ? alloc_pages_current+0x19b/0x2a0 [ 37.114464] mount_fs+0xa3/0x310 [ 37.117822] vfs_kern_mount.part.0+0x68/0x470 [ 37.122311] do_mount+0x115c/0x2f50 [ 37.125975] ? lock_acquire+0x170/0x3c0 [ 37.129932] ? check_preemption_disabled+0x41/0x280 [ 37.134937] ? copy_mount_string+0x40/0x40 [ 37.139149] ? copy_mount_options+0x59/0x380 [ 37.143578] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 37.148588] ? kmem_cache_alloc_trace+0x323/0x380 [ 37.154259] ? copy_mount_options+0x26f/0x380 [ 37.158829] ksys_mount+0xcf/0x130 [ 37.162367] __x64_sys_mount+0xba/0x150 [ 37.166342] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 37.170918] do_syscall_64+0xf9/0x620 [ 37.174892] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.180196] RIP: 0033:0x7f5a3151371a [ 37.183981] 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 [ 37.203072] RSP: 002b:00007ffdc0e9f3a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 37.210769] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5a3151371a [ 37.218019] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffdc0e9f3c0 [ 37.225297] RBP: 00007ffdc0e9f3c0 R08: 00007ffdc0e9f400 R09: 00005555566182c0 [ 37.232579] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 37.239830] R13: 00007ffdc0e9f400 R14: 0000000000000039 R15: 0000000020000758 [ 37.247082] Modules linked in: [ 37.251115] ---[ end trace 31f08b8a7be7f5d5 ]--- [ 37.256086] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 37.261807] 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 [ 37.280781] RSP: 0018:ffff888092317650 EFLAGS: 00010246 [ 37.286326] RAX: 0000000000000000 RBX: ffff88808dded098 RCX: 0000000000000000 [ 37.293633] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808dded158 [ 37.300912] RBP: ffff888092317738 R08: 0000000000000001 R09: 0000000000000000 [ 37.308245] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 37.315579] R13: 1ffff11012462ecb R14: ffff88808dded0d0 R15: 0000000000000001 [ 37.322863] FS: 0000555556618300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 37.331219] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.337156] CR2: 00007f7d34150f60 CR3: 00000000aac15000 CR4: 00000000003406f0 [ 37.344560] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.351824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.359333] Kernel panic - not syncing: Fatal exception [ 37.364890] Kernel Offset: disabled [ 37.368504] Rebooting in 86400 seconds..