[  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 '10.128.15.194' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   50.421733][ T8474] loop0: detected capacity change from 4096 to 0
[   50.430181][ T8474] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   50.439836][ T8474] EXT4-fs warning (device loop0): ext4_enable_quotas:6430: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   50.454250][ T8474] EXT4-fs (loop0): mount failed
executing program
[   55.667524][ T8482] loop0: detected capacity change from 4096 to 0
[   55.675499][ T8482] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0).
[   55.685555][ T8482] EXT4-fs warning (device loop0): ext4_enable_quotas:6430: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix.
[   55.700066][ T8482] EXT4-fs (loop0): mount failed
[   56.754928][ T8473] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff88810c9ec8c0 (size 64):
  comm "syz-executor852", pid 8474, jiffies 4294942306 (age 12.490s)
  hex dump (first 32 bytes):
    00 70 c0 0d 81 88 ff ff 00 00 00 00 00 00 00 00  .p..............
    00 00 00 00 00 00 00 00 0a 00 00 00 48 00 00 00  ............H...
  backtrace:
    [<000000001482be09>] v2_read_file_info+0x1ae/0x430
    [<00000000cc151d70>] dquot_load_quota_sb+0x351/0x650
    [<00000000e40ff04d>] dquot_load_quota_inode+0xda/0x160
    [<0000000004abdb65>] ext4_enable_quotas+0x1b2/0x2f0
    [<000000001943e03d>] ext4_fill_super+0x3fa5/0x5ad0
    [<00000000fba29bb8>] mount_bdev+0x223/0x260
    [<00000000f826282f>] legacy_get_tree+0x2b/0x90
    [<00000000ee6d9d52>] vfs_get_tree+0x28/0x100
    [<0000000035740be0>] path_mount+0xc5e/0x1170
    [<000000006bad466c>] __x64_sys_mount+0x18e/0x1d0
    [<0000000003a2e9c8>] do_syscall_64+0x2d/0x70
    [<00000000a38a22db>] entry_SYSCALL_64_after_hwframe+0x44/0xa9