[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.878940] INFO: trying to register non-static key. [ 32.884079] The code is fine but needs lockdep annotation, or maybe [ 32.889078] NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds [ 32.890478] you didn't initialize this object before use? [ 32.905773] turning off the locking correctness validator. [ 32.911389] CPU: 0 PID: 8090 Comm: syz-executor244 Not tainted 4.19.211-syzkaller #0 [ 32.919244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 32.928575] Call Trace: [ 32.931148] dump_stack+0x1fc/0x2ef [ 32.934755] register_lock_class+0xe82/0x11c0 [ 32.939232] ? static_obj+0x50/0x50 [ 32.942843] __lock_acquire+0x17d/0x3ff0 [ 32.946994] ? __lock_acquire+0x6de/0x3ff0 [ 32.951208] ? mark_held_locks+0xf0/0xf0 [ 32.955249] ? mark_held_locks+0xf0/0xf0 [ 32.959316] ? lock_downgrade+0x720/0x720 [ 32.963442] ? lock_acquire+0x170/0x3c0 [ 32.967416] ? get_mem_cgroup_from_page+0x7a/0x3b0 [ 32.972325] ? check_preemption_disabled+0x41/0x280 [ 32.977319] ? check_preemption_disabled+0x41/0x280 [ 32.982314] ? alloc_buffer_head+0x20/0x130 [ 32.986616] lock_acquire+0x170/0x3c0 [ 32.990403] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 32.995484] down_read+0x36/0x80 [ 32.998830] ? nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.003910] nilfs_bmap_lookup_at_level+0x7b/0x3e0 [ 33.008816] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.013118] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.018818] ? save_trace+0xd6/0x290 [ 33.022548] ? nilfs_mdt_write_page+0x280/0x280 [ 33.027203] nilfs_mdt_read_block+0x96/0x3e0 [ 33.031596] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.037471] ? mark_held_locks+0xf0/0xf0 [ 33.041601] nilfs_mdt_get_block+0xe6/0xd40 [ 33.045955] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.050603] ? lock_downgrade+0x720/0x720 [ 33.054727] ? lock_acquire+0x170/0x3c0 [ 33.058678] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.063413] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.067972] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.073146] ? nilfs_iget+0x1cf/0x860 [ 33.076924] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.081916] nilfs_iget+0x204/0x860 [ 33.085531] ? nilfs_iget_locked+0xd0/0xd0 [ 33.089743] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.094654] ? wait_woken+0x250/0x250 [ 33.098431] ? nilfs_mount+0x9df/0xe70 [ 33.102296] nilfs_get_root_dentry+0x26/0x250 [ 33.106767] nilfs_mount+0xac8/0xe70 [ 33.110547] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.115454] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.120448] ? pcpu_alloc+0xc9/0x1190 [ 33.124230] ? alloc_pages_current+0x19b/0x2a0 [ 33.128792] mount_fs+0xa3/0x310 [ 33.132137] vfs_kern_mount.part.0+0x68/0x470 [ 33.136617] do_mount+0x115c/0x2f50 [ 33.140229] ? cmp_ex_sort+0xc0/0xc0 [ 33.143924] ? __do_page_fault+0x180/0xd60 [ 33.148140] ? copy_mount_string+0x40/0x40 [ 33.152358] ? copy_mount_options+0x1cd/0x380 [ 33.156853] ? memset+0x20/0x40 [ 33.160231] ? copy_mount_options+0x26f/0x380 [ 33.164710] ksys_mount+0xcf/0x130 [ 33.168241] __x64_sys_mount+0xba/0x150 [ 33.172202] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.176761] do_syscall_64+0xf9/0x620 [ 33.180550] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.185721] RIP: 0033:0x7fb81f5d663a [ 33.189431] 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 [ 33.208311] RSP: 002b:00007ffe37052558 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.215995] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb81f5d663a [ 33.223253] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe37052570 [ 33.230508] RBP: 00007ffe37052570 R08: 00007ffe370525b0 R09: 00005555567772c0 [ 33.237760] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 33.245005] R13: 00007ffe370525b0 R14: 000000000000003a R15: 0000000020000770 [ 33.252586] kasan: CONFIG_KASAN_INLINE enabled [ 33.257222] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.264711] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.270945] CPU: 0 PID: 8090 Comm: syz-executor244 Not tainted 4.19.211-syzkaller #0 [ 33.278813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 33.288156] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.293846] 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 [ 33.312726] RSP: 0018:ffff8880aa3df650 EFLAGS: 00010246 [ 33.318066] RAX: 0000000000000000 RBX: ffff88808d3d3098 RCX: 0000000000000000 [ 33.325318] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808d3d3158 [ 33.332571] RBP: ffff8880aa3df738 R08: 0000000000000001 R09: 0000000000000000 [ 33.339816] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 33.347149] R13: 1ffff1101547becb R14: ffff88808d3d30d0 R15: 0000000000000001 [ 33.354404] FS: 0000555556777300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 33.362614] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.368472] CR2: 00007ffe37053000 CR3: 00000000b2963000 CR4: 00000000003406f0 [ 33.375910] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.383158] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.390441] Call Trace: [ 33.393014] ? nilfs_bmap_get_dat+0xc0/0xc0 [ 33.397319] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 [ 33.403019] ? save_trace+0xd6/0x290 [ 33.406803] ? nilfs_mdt_write_page+0x280/0x280 [ 33.411457] nilfs_mdt_read_block+0x96/0x3e0 [ 33.415850] ? nilfs_mdt_submit_block.constprop.0+0xaa0/0xaa0 [ 33.421713] ? mark_held_locks+0xf0/0xf0 [ 33.425756] nilfs_mdt_get_block+0xe6/0xd40 [ 33.430059] ? nilfs_mdt_read_block+0x3e0/0x3e0 [ 33.434708] ? lock_downgrade+0x720/0x720 [ 33.438841] ? lock_acquire+0x170/0x3c0 [ 33.442800] ? nilfs_palloc_get_block+0x3a/0x2b0 [ 33.447535] nilfs_palloc_get_block+0xc4/0x2b0 [ 33.452095] nilfs_palloc_get_entry_block+0x17b/0x230 [ 33.457271] ? nilfs_iget+0x1cf/0x860 [ 33.461154] nilfs_ifile_get_inode_block+0xbf/0x170 [ 33.466151] nilfs_iget+0x204/0x860 [ 33.469757] ? nilfs_iget_locked+0xd0/0xd0 [ 33.473971] ? nilfs_attach_log_writer+0x68b/0xa30 [ 33.478878] ? wait_woken+0x250/0x250 [ 33.482674] ? nilfs_mount+0x9df/0xe70 [ 33.486540] nilfs_get_root_dentry+0x26/0x250 [ 33.491013] nilfs_mount+0xac8/0xe70 [ 33.494709] ? nilfs_attach_checkpoint+0x4b0/0x4b0 [ 33.499618] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.504612] ? pcpu_alloc+0xc9/0x1190 [ 33.508390] ? alloc_pages_current+0x19b/0x2a0 [ 33.512955] mount_fs+0xa3/0x310 [ 33.516300] vfs_kern_mount.part.0+0x68/0x470 [ 33.520777] do_mount+0x115c/0x2f50 [ 33.524382] ? cmp_ex_sort+0xc0/0xc0 [ 33.528078] ? __do_page_fault+0x180/0xd60 [ 33.532292] ? copy_mount_string+0x40/0x40 [ 33.536507] ? copy_mount_options+0x1cd/0x380 [ 33.540980] ? memset+0x20/0x40 [ 33.544237] ? copy_mount_options+0x26f/0x380 [ 33.548711] ksys_mount+0xcf/0x130 [ 33.552232] __x64_sys_mount+0xba/0x150 [ 33.556187] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 33.560756] do_syscall_64+0xf9/0x620 [ 33.564560] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.569725] RIP: 0033:0x7fb81f5d663a [ 33.573419] 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 [ 33.592385] RSP: 002b:00007ffe37052558 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 33.600073] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb81f5d663a [ 33.607415] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe37052570 [ 33.614663] RBP: 00007ffe37052570 R08: 00007ffe370525b0 R09: 00005555567772c0 [ 33.621914] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000004 [ 33.629338] R13: 00007ffe370525b0 R14: 000000000000003a R15: 0000000020000770 [ 33.636587] Modules linked in: [ 33.640010] ---[ end trace 915c5f8d8257459a ]--- [ 33.644827] RIP: 0010:nilfs_bmap_lookup_at_level+0xb5/0x3e0 [ 33.650540] 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 [ 33.669538] RSP: 0018:ffff8880aa3df650 EFLAGS: 00010246 [ 33.674939] RAX: 0000000000000000 RBX: ffff88808d3d3098 RCX: 0000000000000000 [ 33.682199] RDX: dffffc0000000000 RSI: ffffffff814a9aa2 RDI: ffff88808d3d3158 [ 33.689515] RBP: ffff8880aa3df738 R08: 0000000000000001 R09: 0000000000000000 [ 33.696852] R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000002 [ 33.704154] R13: 1ffff1101547becb R14: ffff88808d3d30d0 R15: 0000000000000001 [ 33.711418] FS: 0000555556777300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 33.719668] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.725595] CR2: 00007ffe37053000 CR3: 00000000b2963000 CR4: 00000000003406f0 [ 33.732852] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.740137] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.747462] Kernel panic - not syncing: Fatal exception [ 33.753328] Kernel Offset: disabled [ 33.756937] Rebooting in 86400 seconds..