[  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 '10.128.0.236' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   46.558699][ T8478] loop0: detected capacity change from 4096 to 0
[   46.567391][ T8478] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   46.577469][ T8478] EXT4-fs warning (device loop0): ext4_enable_quotas:6392: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   46.592014][ T8478] EXT4-fs (loop0): mount failed
executing program
[   52.645696][ T8486] loop0: detected capacity change from 4096 to 0
[   52.653949][ T8486] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   52.663598][ T8486] EXT4-fs warning (device loop0): ext4_enable_quotas:6392: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   52.678063][ T8486] EXT4-fs (loop0): mount failed
[   58.603012][ T8477] kmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888111fda640 (size 64):
  comm "syz-executor026", pid 8478, jiffies 4294941929 (age 14.130s)
  hex dump (first 32 bytes):
    00 98 cd 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:
    [<0000000032c46643>] v2_read_file_info+0x1ae/0x430
    [<00000000f1845b8a>] dquot_load_quota_sb+0x351/0x650
    [<00000000019a56f8>] dquot_load_quota_inode+0xda/0x160
    [<000000000247a07f>] ext4_enable_quotas+0x1b2/0x2f0
    [<00000000f5751d00>] ext4_fill_super+0x3bc5/0x5ac0
    [<00000000f0a64f6a>] mount_bdev+0x223/0x260
    [<0000000041697c79>] legacy_get_tree+0x2b/0x90
    [<00000000a0b9dc7a>] vfs_get_tree+0x28/0x100
    [<000000007cdd39fd>] path_mount+0xc5e/0x1170
    [<00000000537d0ed7>] __x64_sys_mount+0x18e/0x1d0
    [<0000000054603890>] do_syscall_64+0x2d/0x70
    [<00000000c59f0847>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff8881108332c0 (size 64):
  comm "syz-executor026", pid 8486, jiffies 4294942538 (age 8.050s)
  hex dump (first 32 bytes):
    00 00 09 0c 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:
    [<0000000032c46643>] v2_read_file_info+0x1ae/0x430
    [<00000000f1845b8a>] dquot_load_quota_sb+0x351/0x650
    [<00000000019a56f8>] dquot_load_quota_inode+0xda/0x160
    [<000000000247a07f>] ext4_enable_quotas+0x1b2/0x2f0
    [<00000000f5751d00>] ext4_fill_super+0x3bc5/0x5ac0
    [<00000000f0a64f6a>] mount_bdev+0x223/0x260
    [<0000000041697c79>] legacy_get_tree+0x2b/0x90
    [<00000000a0b9dc7a>] vfs_get_tree+0x28/0x100
    [<000000007cdd39fd>] path_mount+0xc5e/0x1170
    [<00000000537d0ed7>] __x64_sys_mount+0x18e/0x1d0
    [<0000000054603890>] do_syscall_64+0x2d/0x70
    [<00000000c59f0847>] entry_SYSCALL_64_after_hwframe+0x44/0xa9