[  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 '10.128.0.159' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   52.605678][ T8463] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   52.615506][ T8463] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 2048)
[   52.628888][ T8463] NILFS (loop0): invalid segment: Magic number mismatch
[   52.636188][ T8463] NILFS (loop0): unable to fall back to spare super block
[   52.643649][ T8463] NILFS (loop0): error -22 while searching super root
executing program
[   58.706954][ T8468] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   58.716768][ T8468] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 2048)
[   58.729539][ T8468] NILFS (loop0): invalid segment: Magic number mismatch
[   58.736587][ T8468] NILFS (loop0): unable to fall back to spare super block
[   58.744017][ T8468] NILFS (loop0): error -22 while searching super root
executing program
[   64.815551][ T8473] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   64.825487][ T8473] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 2048)
[   64.838416][ T8473] NILFS (loop0): invalid segment: Magic number mismatch
[   64.845946][ T8473] NILFS (loop0): unable to fall back to spare super block
[   64.853597][ T8473] NILFS (loop0): error -22 while searching super root
[   70.813131][ T8462] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888110c5e960 (size 32):
  comm "syz-executor423", pid 8463, jiffies 4294942533 (age 20.290s)
  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:
    [<00000000acad5f72>] kstrdup+0x36/0x70
    [<00000000729f35bc>] kstrdup_const+0x53/0x80
    [<00000000c9d4cff0>] kvasprintf_const+0xc2/0x110
    [<000000007b640d9b>] kobject_set_name_vargs+0x3b/0xe0
    [<0000000076688e50>] kobject_init_and_add+0x6d/0xc0
    [<000000005b28b23d>] nilfs_sysfs_create_device_group+0x98/0x3a0
    [<000000003cddf84d>] init_nilfs+0x523/0x680
    [<00000000c833ef5a>] nilfs_mount+0x51b/0x890
    [<000000009ff80001>] legacy_get_tree+0x2b/0x90
    [<000000006bc6728e>] vfs_get_tree+0x28/0x100
    [<00000000a784cdeb>] path_mount+0xc5e/0x1170
    [<00000000df137a3d>] __x64_sys_mount+0x18e/0x1d0
    [<00000000e676c31d>] do_syscall_64+0x2d/0x70
    [<00000000f59f0c79>] entry_SYSCALL_64_after_hwframe+0x44/0xa9