[  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 '10.128.0.224' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   50.461309][ T8432] loop0: detected capacity change from 4096 to 0
[   50.469859][ T8432] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   50.479850][ T8432] EXT4-fs warning (device loop0): ext4_enable_quotas:6384: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   50.494343][ T8432] EXT4-fs (loop0): mount failed
executing program
[   55.717853][ T8440] loop0: detected capacity change from 4096 to 0
[   55.726153][ T8440] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   55.735915][ T8440] EXT4-fs warning (device loop0): ext4_enable_quotas:6384: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   55.750298][ T8440] EXT4-fs (loop0): mount failed
[   56.830095][ T8431] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888111fb7dc0 (size 64):
  comm "syz-executor697", pid 8432, jiffies 4294942317 (age 12.600s)
  hex dump (first 32 bytes):
    00 10 d1 0d 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:
    [<00000000477c3d52>] v2_read_file_info+0x1ae/0x430
    [<00000000e49ecfd5>] dquot_load_quota_sb+0x351/0x650
    [<000000002c3fc6d8>] dquot_load_quota_inode+0xda/0x160
    [<00000000325387c8>] ext4_enable_quotas+0x1b2/0x2f0
    [<00000000a2cd38d3>] ext4_fill_super+0x3fa5/0x5ad0
    [<000000006c3a73e3>] mount_bdev+0x223/0x260
    [<00000000fb500e21>] legacy_get_tree+0x2b/0x90
    [<00000000526067b4>] vfs_get_tree+0x28/0x100
    [<00000000dd1e8a89>] path_mount+0xc5e/0x1170
    [<00000000fd40a694>] __x64_sys_mount+0x18e/0x1d0
    [<0000000006d4501f>] do_syscall_64+0x2d/0x70
    [<00000000db02a381>] entry_SYSCALL_64_after_hwframe+0x44/0xa9