[ 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 '10.128.0.191' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.390223] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 27.410417] Quota error (device loop0): qtree_write_dquot: Error -130079078 occurred while creating quota [ 27.421369] Quota error (device loop0): qtree_write_dquot: Error -130079077 occurred while creating quota [ 27.431276] BUG: unable to handle kernel paging request at fffffbffff07e4ee [ 27.438368] IP: __lock_acquire+0x1cc/0x3f20 [ 27.442660] PGD 23fff0067 P4D 23fff0067 PUD 23ffef067 PMD 0 [ 27.448433] Oops: 0000 [#1] PREEMPT SMP KASAN [ 27.452900] Modules linked in: [ 27.456067] CPU: 0 PID: 7986 Comm: syz-executor347 Not tainted 4.14.210-syzkaller #0 [ 27.463926] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.473330] task: ffff888095848540 task.stack: ffff8880b3608000 [ 27.479360] RIP: 0010:__lock_acquire+0x1cc/0x3f20 [ 27.484171] RSP: 0018:ffff8880b360f660 EFLAGS: 00010806 [ 27.489546] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 27.496790] RDX: 1fffffffff07e4ee RSI: 0000000000000000 RDI: fffffffff83f2773 [ 27.504029] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 27.511269] R10: 0000000000000001 R11: ffff888095848540 R12: fffffffff83f2773 [ 27.518509] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8beb4d40 [ 27.525748] FS: 0000000001b6d880(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 27.533949] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.539803] CR2: fffffbffff07e4ee CR3: 000000009d069000 CR4: 00000000001406f0 [ 27.547097] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.554345] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.561588] Call Trace: [ 27.564152] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.569586] ? ext4_data_block_valid+0x228/0x2d0 [ 27.574312] ? __lock_acquire+0x2190/0x3f20 [ 27.578604] ? trace_hardirqs_on+0x10/0x10 [ 27.582811] ? trace_hardirqs_on+0x10/0x10 [ 27.587030] lock_acquire+0x170/0x3f0 [ 27.590806] ? dquot_add_inodes+0x34/0x870 [ 27.595035] _raw_spin_lock+0x2a/0x40 [ 27.598827] ? dquot_add_inodes+0x34/0x870 [ 27.603030] dquot_add_inodes+0x34/0x870 [ 27.607062] ? mark_buffer_dirty+0x95/0x480 [ 27.611353] ? ext4_listxattr+0xab0/0xab0 [ 27.615471] __dquot_transfer+0xdb2/0x16d0 [ 27.619689] ? lock_downgrade+0x740/0x740 [ 27.623820] ? __dquot_alloc_space+0x7b0/0x7b0 [ 27.628373] ? dqput.part.0+0x563/0x750 [ 27.632321] ? proc_cpuset_show+0x230/0x850 [ 27.636614] ? proc_cpuset_show+0x230/0x850 [ 27.640906] ? do_raw_spin_unlock+0x164/0x220 [ 27.645372] ? from_kqid+0xd3/0x190 [ 27.648971] ? qid_valid+0xe0/0xe0 [ 27.652483] ? dqget+0x13e/0xe90 [ 27.655823] ? dquot_writeback_dquots+0x430/0x650 [ 27.660636] dquot_transfer+0x25a/0x3e6 [ 27.664682] ? __dquot_transfer+0x16d0/0x16d0 [ 27.669150] ? ext4_setattr+0x3af/0x22f0 [ 27.673182] ext4_setattr+0x3ba/0x22f0 [ 27.677055] ? map_id_up+0xe9/0x180 [ 27.680656] ? evm_inode_setattr+0x41/0x1e0 [ 27.685043] ? ext4_evict_inode+0x1500/0x1500 [ 27.689512] notify_change+0x56b/0xd10 [ 27.693374] chown_common+0x40b/0x4b0 [ 27.697146] ? chmod_common+0x390/0x390 [ 27.701119] ? __mnt_want_write+0x1da/0x270 [ 27.705409] SyS_fchownat+0xf6/0x190 [ 27.709109] ? SyS_chmod+0x20/0x20 [ 27.712616] ? __close_fd+0x159/0x230 [ 27.716388] ? do_syscall_64+0x4c/0x640 [ 27.720329] ? SyS_chmod+0x20/0x20 [ 27.723836] do_syscall_64+0x1d5/0x640 [ 27.727696] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.732855] RIP: 0033:0x4447b9 [ 27.736012] RSP: 002b:00007ffe1735b9e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000104 [ 27.743686] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 00000000004447b9 [ 27.750927] RDX: 000000000000ee00 RSI: 0000000020000040 RDI: 0000000000000005 [ 27.758167] RBP: 00000000006cf018 R08: 0000000000000000 R09: 00000000004002e0 [ 27.765420] R10: 000000000000ee00 R11: 0000000000000246 R12: 00000000004023a0 [ 27.772670] R13: 0000000000402430 R14: 0000000000000000 R15: 0000000000000000 [ 27.779910] Code: 18 00 00 00 00 48 81 c4 80 01 00 00 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 67 2a 00 00 49 81 3c 24 a0 07 2e 8b 0f 84 5f [ 27.798971] RIP: __lock_acquire+0x1cc/0x3f20 RSP: ffff8880b360f660 [ 27.805260] CR2: fffffbffff07e4ee [ 27.808696] ---[ end trace 54cd6823bc09ae31 ]--- [ 27.813421] Kernel panic - not syncing: Fatal exception [ 27.819444] Kernel Offset: disabled [ 27.823045] Rebooting in 86400 seconds..