[  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 '10.128.0.31' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   49.655348][ T8448] loop0: detected capacity change from 4096 to 0
[   49.663810][ T8448] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   49.673338][ T8448] EXT4-fs warning (device loop0): ext4_enable_quotas:6384: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   49.687564][ T8448] EXT4-fs (loop0): mount failed
[   55.594369][ T8447] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888110391740 (size 64):
  comm "syz-executor633", pid 8448, jiffies 4294942237 (age 7.980s)
  hex dump (first 32 bytes):
    00 f0 d8 0e 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:
    [<000000006be8ea73>] v2_read_file_info+0x1ae/0x430
    [<0000000055eca989>] dquot_load_quota_sb+0x351/0x650
    [<00000000a8a9b2f5>] dquot_load_quota_inode+0xda/0x160
    [<00000000b4735883>] ext4_enable_quotas+0x1b2/0x2f0
    [<00000000bfa66f9a>] ext4_fill_super+0x3fa5/0x5ad0
    [<00000000ff37dd25>] mount_bdev+0x223/0x260
    [<00000000b57ef312>] legacy_get_tree+0x2b/0x90
    [<00000000e5f07cb9>] vfs_get_tree+0x28/0x100
    [<00000000136046e7>] path_mount+0xc5e/0x1170
    [<00000000a87db46a>] __x64_sys_mount+0x18e/0x1d0
    [<000000003857c432>] do_syscall_64+0x2d/0x70
    [<00000000ded49322>] entry_SYSCALL_64_after_hwframe+0x44/0xa9