[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.112' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.130428] audit: type=1800 audit(1644407705.577:2): pid=7974 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor333" name="bus" dev="sda1" ino=13861 res=0 [ 30.199746] EXT4-fs warning (device sda1): ext4_block_to_path:105: block 1074791436 > max in inode 13861 [ 30.209562] ------------[ cut here ]------------ [ 30.214300] kernel BUG at fs/ext4/indirect.c:1236! [ 30.219298] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 30.224643] Modules linked in: [ 30.227814] CPU: 1 PID: 7974 Comm: syz-executor333 Not tainted 4.14.265-syzkaller #0 [ 30.235664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.244992] task: ffff88809c2f6140 task.stack: ffff888091668000 [ 30.251033] RIP: 0010:ext4_ind_remove_space+0xe47/0x1250 [ 30.256469] RSP: 0018:ffff88809166fb20 EFLAGS: 00010297 [ 30.261805] RAX: ffff88809c2f6140 RBX: 000000004010040c RCX: 0000000000000000 [ 30.269049] RDX: 0000000000000000 RSI: ffffffff878bbcc0 RDI: ffffed10122cdf31 [ 30.276291] RBP: 0000000000001000 R08: 000000000000005c R09: 0000000000000000 [ 30.283533] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809166fbd0 [ 30.290774] R13: 0000000000000003 R14: 000000004010040c R15: ffff88808e935730 [ 30.298018] FS: 00005555563c3300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 30.306222] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.312078] CR2: 0000000020400002 CR3: 00000000abf79000 CR4: 00000000003406e0 [ 30.319323] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.326565] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.333805] Call Trace: [ 30.336370] ? check_preemption_disabled+0x35/0x240 [ 30.341361] ? __es_remove_extent+0x41f/0x600 [ 30.345840] ? ext4_ind_truncate+0x860/0x860 [ 30.350221] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.355209] ? __es_remove_extent+0x3c6/0x600 [ 30.359676] ? ext4_discard_preallocations+0x35a/0xdf0 [ 30.364926] ? ext4_es_remove_extent+0x95/0x320 [ 30.369568] ? lock_acquire+0x170/0x3f0 [ 30.373515] ? lock_downgrade+0x740/0x740 [ 30.377638] ? _raw_write_unlock+0x29/0x40 [ 30.381846] ? ext4_es_remove_extent+0x9a/0x320 [ 30.386491] ext4_punch_hole+0xcf4/0x1000 [ 30.390619] ext4_fallocate+0x327/0x1d80 [ 30.394657] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.400079] ? ext4_insert_range+0x1340/0x1340 [ 30.404637] vfs_fallocate+0x346/0x790 [ 30.408497] SyS_fallocate+0x4a/0x80 [ 30.412182] ? compat_SyS_ftruncate+0x20/0x20 [ 30.416651] do_syscall_64+0x1d5/0x640 [ 30.420513] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.425676] RIP: 0033:0x7f4c5f1930d9 [ 30.429361] RSP: 002b:00007fffb5cdd4a8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d [ 30.437056] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4c5f1930d9 [ 30.444316] RDX: 0000000001000000 RSI: 0000000000000003 RDI: 0000000000000005 [ 30.451568] RBP: 00007f4c5f1570c0 R08: 0000000000000000 R09: 0000000000000000 [ 30.458830] R10: 00000ffeffeff000 R11: 0000000000000246 R12: 00007f4c5f157150 [ 30.466078] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 30.473326] Code: 01 00 0f 85 4c 03 00 00 48 8b 0b 4c 89 fe 44 8b 4c 24 20 48 8b 7c 24 10 48 83 c1 04 e8 73 bd ff ff e9 f5 f6 ff ff e8 79 45 9c ff <0f> 0b e8 72 45 9c ff 48 8b 7c 24 10 31 d2 4c 89 fe 8b 84 24 b0 [ 30.492390] RIP: ext4_ind_remove_space+0xe47/0x1250 RSP: ffff88809166fb20 [ 30.499606] ---[ end trace 48a577c924040e25 ]--- [ 30.504398] Kernel panic - not syncing: Fatal exception [ 30.509923] Kernel Offset: disabled [ 30.513533] Rebooting in 86400 seconds..