[  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 '10.128.0.132' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   51.704098][ T8461] loop0: detected capacity change from 4096 to 0
[   51.713262][ T8461] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   51.723234][ T8461] EXT4-fs warning (device loop0): ext4_enable_quotas:6430: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   51.737543][ T8461] EXT4-fs (loop0): mount failed
[   57.715736][ T8460] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff8881105f2740 (size 64):
  comm "syz-executor187", pid 8461, jiffies 4294942418 (age 8.110s)
  hex dump (first 32 bytes):
    00 c0 d1 0f 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:
    [<00000000725803c0>] v2_read_file_info+0x1ae/0x430
    [<0000000095a0d00a>] dquot_load_quota_sb+0x351/0x650
    [<00000000d9a94a45>] dquot_load_quota_inode+0xda/0x160
    [<00000000f2292016>] ext4_enable_quotas+0x1b2/0x2f0
    [<00000000f0cde0b9>] ext4_fill_super+0x3fa5/0x5ad0
    [<0000000066b8521f>] mount_bdev+0x223/0x260
    [<00000000a312eea3>] legacy_get_tree+0x2b/0x90
    [<00000000ad9b1660>] vfs_get_tree+0x28/0x100
    [<00000000fda5b22e>] path_mount+0xc5e/0x1170
    [<00000000fc61a373>] __x64_sys_mount+0x18e/0x1d0
    [<00000000850bc1c4>] do_syscall_64+0x2d/0x70
    [<0000000064ca1659>] entry_SYSCALL_64_after_hwframe+0x44/0xa9