[  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 '10.128.0.188' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   49.352868][ T8446] loop0: detected capacity change from 4096 to 0
[   49.361194][ T8446] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   49.370787][ T8446] EXT4-fs warning (device loop0): ext4_enable_quotas:6384: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   49.385131][ T8446] EXT4-fs (loop0): mount failed
[   55.364443][ T8445] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff88810ff32f80 (size 64):
  comm "syz-executor336", pid 8446, jiffies 4294942211 (age 8.100s)
  hex dump (first 32 bytes):
    00 a0 76 05 81 88 ff ff 00 00 00 00 00 00 00 00  ..v.............
    00 00 00 00 00 00 00 00 0a 00 00 00 48 00 00 00  ............H...
  backtrace:
    [<000000004270ea26>] v2_read_file_info+0x1ae/0x430
    [<00000000df503b56>] dquot_load_quota_sb+0x351/0x650
    [<000000002198eb84>] dquot_load_quota_inode+0xda/0x160
    [<0000000054775484>] ext4_enable_quotas+0x1b2/0x2f0
    [<0000000079bed7de>] ext4_fill_super+0x3fa5/0x5ad0
    [<000000000cfd75a9>] mount_bdev+0x223/0x260
    [<00000000e6012254>] legacy_get_tree+0x2b/0x90
    [<0000000053217b5e>] vfs_get_tree+0x28/0x100
    [<0000000081effde6>] path_mount+0xc5e/0x1170
    [<000000001fa13e78>] __x64_sys_mount+0x18e/0x1d0
    [<0000000053b1072b>] do_syscall_64+0x2d/0x70
    [<00000000836a675a>] entry_SYSCALL_64_after_hwframe+0x44/0xa9