[  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 '10.128.0.60' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   53.463515][ T8470] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   53.473277][ T8470] NILFS (loop0): mounting unchecked fs
[   53.479262][ T8470] NILFS (loop0): invalid segment: Magic number mismatch
[   53.486256][ T8470] NILFS (loop0): unable to fall back to spare super block
[   53.493640][ T8470] NILFS (loop0): error -22 while searching super root
executing program
[   59.544495][ T8477] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   59.556603][ T8477] NILFS (loop0): mounting unchecked fs
[   59.565914][ T8477] NILFS (loop0): invalid segment: Magic number mismatch
[   59.573992][ T8477] NILFS (loop0): unable to fall back to spare super block
[   59.581238][ T8477] NILFS (loop0): error -22 while searching super root
executing program
[   65.609732][ T8483] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   65.619554][ T8483] NILFS (loop0): mounting unchecked fs
[   65.625554][ T8483] NILFS (loop0): invalid segment: Magic number mismatch
[   65.632532][ T8483] NILFS (loop0): unable to fall back to spare super block
[   65.639682][ T8483] NILFS (loop0): error -22 while searching super root
executing program
[   71.693556][ T8490] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   71.703357][ T8490] NILFS (loop0): mounting unchecked fs
[   71.709308][ T8490] NILFS (loop0): invalid segment: Magic number mismatch
[   71.716320][ T8490] NILFS (loop0): unable to fall back to spare super block
[   71.723479][ T8490] NILFS (loop0): error -22 while searching super root
executing program
[   77.821573][ T8497] NILFS (loop0): broken superblock, retrying with spare superblock (blocksize = 1024)
[   77.831429][ T8497] NILFS (loop0): mounting unchecked fs
[   77.837798][ T8497] NILFS (loop0): invalid segment: Magic number mismatch
[   77.844956][ T8497] NILFS (loop0): unable to fall back to spare super block
[   77.852095][ T8497] NILFS (loop0): error -22 while searching super root
[   83.808172][ T8469] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888111089ca0 (size 32):
  comm "syz-executor348", pid 8497, jiffies 4294945054 (age 8.070s)
  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:
    [<00000000317f6f0b>] kstrdup+0x36/0x70
    [<00000000985e82fb>] kstrdup_const+0x53/0x80
    [<00000000c2cf1e78>] kvasprintf_const+0xc2/0x110
    [<000000002a14a4b6>] kobject_set_name_vargs+0x3b/0xe0
    [<00000000b7e9e5d7>] kobject_init_and_add+0x6d/0xc0
    [<0000000078840e87>] nilfs_sysfs_create_device_group+0x98/0x3a0
    [<000000002053cf2c>] init_nilfs+0x523/0x680
    [<00000000214ea7ec>] nilfs_mount+0x51b/0x890
    [<00000000f8c3281a>] legacy_get_tree+0x2b/0x90
    [<00000000d8a96cd0>] vfs_get_tree+0x28/0x100
    [<00000000b7345ffd>] path_mount+0xc5e/0x1170
    [<000000002ddfb897>] __x64_sys_mount+0x18e/0x1d0
    [<000000006607b7e7>] do_syscall_64+0x2d/0x70
    [<0000000037769e47>] entry_SYSCALL_64_after_hwframe+0x44/0xa9