[ 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 '10.128.0.234' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 48.494122] INFO: trying to register non-static key. [ 48.497949] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 48.499233] The code is fine but needs lockdep annotation, or maybe [ 48.515383] you didn't initialize this object before use? [ 48.520905] turning off the locking correctness validator. [ 48.526528] CPU: 0 PID: 8123 Comm: syz-executor296 Not tainted 4.19.211-syzkaller #0 [ 48.534400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 48.543728] Call Trace: [ 48.546418] dump_stack+0x1fc/0x2ef [ 48.550028] register_lock_class+0xe82/0x11c0 [ 48.554505] ? static_obj+0x50/0x50 [ 48.558121] __lock_acquire+0x17d/0x3ff0 [ 48.562162] ? __lock_acquire+0x6de/0x3ff0 [ 48.566377] ? mark_held_locks+0xf0/0xf0 [ 48.570419] ? mark_held_locks+0xf0/0xf0 [ 48.574462] ? lock_downgrade+0x720/0x720 [ 48.578590] ? lock_acquire+0x170/0x3c0 [ 48.582544] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 48.587456] ? check_preemption_disabled+0x41/0x280 [ 48.592454] ? check_preemption_disabled+0x41/0x280 [ 48.597448] ? alloc_buffer_head+0x20/0x130 [ 48.601747] lock_acquire+0x170/0x3c0 [ 48.605528] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 48.610745] down_read+0x36/0x80 [ 48.614097] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 48.619186] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 48.624102] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 48.628412] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 48.634106] ? save_trace+0xd6/0x290 [ 48.637800] ? nilfs_mdt_write_page+0x280/0x280 [ 48.642449] nilfs_mdt_read_block+0x96/0x3e0 [ 48.646837] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 48.652703] ? mark_held_locks+0xf0/0xf0 [ 48.656743] nilfs_mdt_get_block+0xe6/0xd40 [ 48.661048] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 48.665692] ? lock_downgrade+0x720/0x720 [ 48.669817] ? lock_acquire+0x170/0x3c0 [ 48.673770] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 48.678502] nilfs_palloc_get_block+0xc4/0x2b0 [ 48.683077] nilfs_palloc_get_entry_block+0x17b/0x230 [ 48.688264] ? nilfs_iget+0x1cf/0x860 [ 48.692049] nilfs_ifile_get_inode_block+0xbf/0x170 [ 48.697046] nilfs_iget+0x204/0x860 [ 48.700658] ? nilfs_iget_locked+0xd0/0xd0 [ 48.704878] ? nilfs_attach_log_writer+0x68b/0xa30 [ 48.709788] ? wait_woken+0x250/0x250 [ 48.713570] ? nilfs_mount+0x9df/0xe70 [ 48.717436] nilfs_get_root_dentry+0x26/0x250 [ 48.721929] nilfs_mount+0xac8/0xe70 [ 48.725642] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 48.730572] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 48.735571] ? pcpu_alloc+0xc9/0x1190 [ 48.739360] ? alloc_pages_current+0x19b/0x2a0 [ 48.743921] mount_fs+0xa3/0x310 [ 48.747267] vfs_kern_mount.part.0+0x68/0x470 [ 48.751741] do_mount+0x115c/0x2f50 [ 48.755347] ? do_raw_spin_unlock+0x171/0x230 [ 48.759827] ? check_preemption_disabled+0x41/0x280 [ 48.764821] ? copy_mount_string+0x40/0x40 [ 48.769135] ? copy_mount_options+0x59/0x380 [ 48.773526] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 48.778523] ? kmem_cache_alloc_trace+0x323/0x380 [ 48.783344] ? copy_mount_options+0x26f/0x380 [ 48.787823] ksys_mount+0xcf/0x130 [ 48.791429] __x64_sys_mount+0xba/0x150 [ 48.795393] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 48.799954] do_syscall_64+0xf9/0x620 [ 48.803734] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.808905] RIP: 0033:0x7f67f92fb73a [ 48.812627] 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 [ 48.831508] RSP: 002b:00007ffe564df908 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 48.839193] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f67f92fb73a [ 48.846455] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe564df920 [ 48.853712] RBP: 00007ffe564df920 R08: 00007ffe564df960 R09: 00005555555942c0 [ 48.860959] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 48.868206] R13: 00007ffe564df960 R14: 000000000000003b R15: 0000000020000788 [ 48.875718] kasan: CONFIG_KASAN_INLINE enabled [ 48.880481] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 48.887893] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 48.894119] CPU: 0 PID: 8123 Comm: syz-executor296 Not tainted 4.19.211-syzkaller #0 [ 48.901986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 48.911326] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 48.917016] 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 [ 48.935897] RSP: 0018:ffff8880b1617650 EFLAGS: 00010246 [ 48.941238] RAX: 0000000000000000 RBX: ffff8880a2001098 RCX: 0000000000000000 [ 48.948485] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff8880a2001158 [ 48.955732] RBP: ffff8880b1617738 R08: 0000000000000001 R09: 0000000000000000 [ 48.963001] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 48.970262] R13: 1ffff110162c2ecb R14: ffff8880a20010d0 R15: 0000000000000001 [ 48.977513] FS: 0000555555594300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 48.985717] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.991577] CR2: 00007f9fed86b6c0 CR3: 00000000af7ad000 CR4: 00000000003406f0 [ 48.998827] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.006075] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.013323] Call Trace: [ 49.015902] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 49.020206] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 49.025897] ? save_trace+0xd6/0x290 [ 49.029589] ? nilfs_mdt_write_page+0x280/0x280 [ 49.034242] nilfs_mdt_read_block+0x96/0x3e0 [ 49.038631] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 49.044495] ? mark_held_locks+0xf0/0xf0 [ 49.048541] nilfs_mdt_get_block+0xe6/0xd40 [ 49.052846] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 49.057495] ? lock_downgrade+0x720/0x720 [ 49.061624] ? lock_acquire+0x170/0x3c0 [ 49.065595] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 49.070332] nilfs_palloc_get_block+0xc4/0x2b0 [ 49.074893] nilfs_palloc_get_entry_block+0x17b/0x230 [ 49.080062] ? nilfs_iget+0x1cf/0x860 [ 49.083841] nilfs_ifile_get_inode_block+0xbf/0x170 [ 49.088853] nilfs_iget+0x204/0x860 [ 49.092457] ? nilfs_iget_locked+0xd0/0xd0 [ 49.096680] ? nilfs_attach_log_writer+0x68b/0xa30 [ 49.102935] ? wait_woken+0x250/0x250 [ 49.106716] ? nilfs_mount+0x9df/0xe70 [ 49.110585] nilfs_get_root_dentry+0x26/0x250 [ 49.115059] nilfs_mount+0xac8/0xe70 [ 49.118753] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 49.123663] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.128666] ? pcpu_alloc+0xc9/0x1190 [ 49.132456] ? alloc_pages_current+0x19b/0x2a0 [ 49.137040] mount_fs+0xa3/0x310 [ 49.140393] vfs_kern_mount.part.0+0x68/0x470 [ 49.144879] do_mount+0x115c/0x2f50 [ 49.148494] ? do_raw_spin_unlock+0x171/0x230 [ 49.152976] ? check_preemption_disabled+0x41/0x280 [ 49.157972] ? copy_mount_string+0x40/0x40 [ 49.162203] ? copy_mount_options+0x59/0x380 [ 49.166609] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 49.171617] ? kmem_cache_alloc_trace+0x323/0x380 [ 49.176446] ? copy_mount_options+0x26f/0x380 [ 49.180923] ksys_mount+0xcf/0x130 [ 49.184445] __x64_sys_mount+0xba/0x150 [ 49.188399] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 49.192959] do_syscall_64+0xf9/0x620 [ 49.196742] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.201912] RIP: 0033:0x7f67f92fb73a [ 49.205690] 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 [ 49.224572] RSP: 002b:00007ffe564df908 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 49.232281] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f67f92fb73a [ 49.239536] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe564df920 [ 49.246808] RBP: 00007ffe564df920 R08: 00007ffe564df960 R09: 00005555555942c0 [ 49.254056] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 49.261308] R13: 00007ffe564df960 R14: 000000000000003b R15: 0000000020000788 [ 49.268714] Modules linked in: [ 49.272032] ---[ end trace abf5f8c4b0bbef33 ]--- [ 49.276796] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 49.282735] 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 [ 49.302222] RSP: 0018:ffff8880b1617650 EFLAGS: 00010246 [ 49.308129] RAX: 0000000000000000 RBX: ffff8880a2001098 RCX: 0000000000000000 [ 49.315471] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff8880a2001158 [ 49.322816] RBP: ffff8880b1617738 R08: 0000000000000001 R09: 0000000000000000 [ 49.330158] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 49.337417] R13: 1ffff110162c2ecb R14: ffff8880a20010d0 R15: 0000000000000001 [ 49.344743] FS: 0000555555594300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 49.353032] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.358973] CR2: 00007f9fed86b6c0 CR3: 00000000af7ad000 CR4: 00000000003406f0 [ 49.366238] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.373539] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.380862] Kernel panic - not syncing: Fatal exception [ 49.386282] Kernel Offset: disabled [ 49.389892] Rebooting in 86400 seconds..