[  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.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.5' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   50.648281][ T8480] loop0: detected capacity change from 4096 to 0
[   50.657748][ T8480] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   50.667303][ T8480] EXT4-fs warning (device loop0): ext4_enable_quotas:6384: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   50.681986][ T8480] EXT4-fs (loop0): mount failed
executing program
[   56.027260][ T8487] loop0: detected capacity change from 4096 to 0
[   56.035225][ T8487] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   56.045188][ T8487] EXT4-fs warning (device loop0): ext4_enable_quotas:6384: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   56.059977][ T8487] EXT4-fs (loop0): mount failed
[   57.175551][ T8479] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff8881109cdfc0 (size 64):
  comm "syz-executor929", pid 8480, jiffies 4294942339 (age 12.870s)
  hex dump (first 32 bytes):
    00 10 89 0b 81 88 ff ff 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 0a 00 00 00 48 00 00 00  ............H...
  backtrace:
    [<000000008ec482f4>] v2_read_file_info+0x1ae/0x430
    [<00000000e74e202b>] dquot_load_quota_sb+0x351/0x650
    [<00000000a923beff>] dquot_load_quota_inode+0xda/0x160
    [<000000007b80427d>] ext4_enable_quotas+0x1b2/0x2f0
    [<000000004e0d7a51>] ext4_fill_super+0x3fa5/0x5ad0
    [<00000000b3631c8b>] mount_bdev+0x223/0x260
    [<000000009606f853>] legacy_get_tree+0x2b/0x90
    [<00000000dbe07144>] vfs_get_tree+0x28/0x100
    [<00000000c0f19c0c>] path_mount+0xc5e/0x1170
    [<00000000707149f5>] __x64_sys_mount+0x18e/0x1d0
    [<000000006ed9ae02>] do_syscall_64+0x2d/0x70
    [<00000000ad50b017>] entry_SYSCALL_64_after_hwframe+0x44/0xa9