[  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 '10.128.0.5' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   55.587847][ T8472] NILFS (loop0): unable to read secondary superblock (blocksize = 1024)
[   55.596374][ T8472] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   55.607176][ T8472] NILFS (loop0): unable to read secondary superblock (blocksize = 2048)
[   55.615935][ T8472] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 2048)
[   55.631267][ T8472] NILFS (loop0): I/O error reading segment
[   55.637144][ T8472] NILFS (loop0): error -5 while searching super root
executing program
[   60.939842][ T8479] NILFS (loop0): unable to read secondary superblock (blocksize = 1024)
[   60.948366][ T8479] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   60.958419][ T8479] NILFS (loop0): unable to read secondary superblock (blocksize = 2048)
[   60.966950][ T8479] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 2048)
[   60.980996][ T8479] NILFS (loop0): I/O error reading segment
[   60.986861][ T8479] NILFS (loop0): error -5 while searching super root
[   62.168730][ T8471] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888110ad5cc0 (size 32):
  comm "syz-executor321", pid 8472, jiffies 4294942824 (age 12.830s)
  hex dump (first 32 bytes):
    6c 6f 6f 70 30 00 00 00 00 00 00 00 00 00 00 00  loop0...........
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<0000000005692690>] kstrdup+0x36/0x70
    [<000000002a46576e>] kstrdup_const+0x53/0x80
    [<00000000b5f16b37>] kvasprintf_const+0xc2/0x110
    [<00000000effa3364>] kobject_set_name_vargs+0x3b/0xe0
    [<000000007d02730b>] kobject_init_and_add+0x6d/0xc0
    [<000000009db14aaa>] nilfs_sysfs_create_device_group+0x98/0x3a0
    [<0000000017b75cf4>] init_nilfs+0x523/0x680
    [<00000000a61009d7>] nilfs_mount+0x51b/0x890
    [<00000000e67b8a3c>] legacy_get_tree+0x2b/0x90
    [<000000009e4ca47f>] vfs_get_tree+0x28/0x100
    [<00000000a283fa4d>] path_mount+0xc5e/0x1170
    [<00000000ecb9093f>] __x64_sys_mount+0x18e/0x1d0
    [<0000000076ce3bbe>] do_syscall_64+0x2d/0x70
    [<00000000d2e92a39>] entry_SYSCALL_64_after_hwframe+0x44/0xa9