[  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 '10.128.0.176' (ECDSA) to the list of known hosts.
executing program
executing program
syzkaller login: [   59.801022][ T8438] kmemleak: 4 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff88810cad7f00 (size 232):
  comm "kworker/u4:1", pid 8440, jiffies 4294942109 (age 13.520s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    e0 8b 33 01 81 88 ff ff 00 f6 13 10 81 88 ff ff  ..3.............
  backtrace:
    [<000000005c9865dc>] __alloc_file+0x1f/0xf0
    [<00000000759b27df>] alloc_empty_file+0x69/0x120
    [<000000009900f65e>] alloc_file+0x33/0x1b0
    [<00000000f0b74a1d>] alloc_file_pseudo+0xb2/0x140
    [<000000004f3486c5>] create_pipe_files+0x138/0x2e0
    [<00000000284b8654>] umd_setup+0x33/0x220
    [<00000000d36b9b13>] call_usermodehelper_exec_async+0xb4/0x1b0
    [<0000000055ccb011>] ret_from_fork+0x1f/0x30

BUG: memory leak
unreferenced object 0xffff888110e70540 (size 24):
  comm "kworker/u4:1", pid 8440, jiffies 4294942109 (age 13.520s)
  hex dump (first 24 bytes):
    00 00 00 00 00 00 00 00 b0 8e 93 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00                          ........
  backtrace:
    [<00000000ab4c363a>] security_file_alloc+0x2a/0xb0
    [<0000000015fcf0bb>] __alloc_file+0x5d/0xf0
    [<00000000759b27df>] alloc_empty_file+0x69/0x120
    [<000000009900f65e>] alloc_file+0x33/0x1b0
    [<00000000f0b74a1d>] alloc_file_pseudo+0xb2/0x140
    [<000000004f3486c5>] create_pipe_files+0x138/0x2e0
    [<00000000284b8654>] umd_setup+0x33/0x220
    [<00000000d36b9b13>] call_usermodehelper_exec_async+0xb4/0x1b0
    [<0000000055ccb011>] ret_from_fork+0x1f/0x30

BUG: memory leak
unreferenced object 0xffff88810cacd200 (size 232):
  comm "kworker/u4:1", pid 8440, jiffies 4294942109 (age 13.520s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    e0 8b 33 01 81 88 ff ff 40 f2 13 10 81 88 ff ff  ..3.....@.......
  backtrace:
    [<000000005c9865dc>] __alloc_file+0x1f/0xf0
    [<00000000759b27df>] alloc_empty_file+0x69/0x120
    [<000000009900f65e>] alloc_file+0x33/0x1b0
    [<00000000a84e687c>] alloc_file_clone+0x22/0x70
    [<00000000dc5f7536>] create_pipe_files+0x182/0x2e0
    [<00000000c5e8f18a>] umd_setup+0xad/0x220
    [<00000000d36b9b13>] call_usermodehelper_exec_async+0xb4/0x1b0
    [<0000000055ccb011>] ret_from_fork+0x1f/0x30

BUG: memory leak
unreferenced object 0xffff888110ca8cf0 (size 24):
  comm "kworker/u4:1", pid 8440, jiffies 4294942109 (age 13.520s)
  hex dump (first 24 bytes):
    00 00 00 00 00 00 00 00 b0 8e 93 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00                          ........
  backtrace:
    [<00000000ab4c363a>] security_file_alloc+0x2a/0xb0
    [<0000000015fcf0bb>] __alloc_file+0x5d/0xf0
    [<00000000759b27df>] alloc_empty_file+0x69/0x120
    [<000000009900f65e>] alloc_file+0x33/0x1b0
    [<00000000a84e687c>] alloc_file_clone+0x22/0x70
    [<00000000dc5f7536>] create_pipe_files+0x182/0x2e0
    [<00000000c5e8f18a>] umd_setup+0xad/0x220
    [<00000000d36b9b13>] call_usermodehelper_exec_async+0xb4/0x1b0
    [<0000000055ccb011>] ret_from_fork+0x1f/0x30

BUG: memory leak
unreferenced object 0xffff88810151f680 (size 120):
  comm "kworker/u4:1", pid 24, jiffies 4294942655 (age 8.060s)
  hex dump (first 32 bytes):
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000008f27c6e1>] alloc_pid+0x66/0x560
    [<0000000077e35ecf>] copy_process+0x143b/0x25c0
    [<000000000fb87e6d>] kernel_clone+0xf3/0x670
    [<000000003d61add0>] kernel_thread+0x61/0x80
    [<0000000053568955>] call_usermodehelper_exec_work+0xc4/0x120
    [<00000000e5d9980d>] process_one_work+0x2c9/0x600
    [<00000000d3f5856f>] worker_thread+0x59/0x5d0
    [<00000000d35995e1>] kthread+0x178/0x1b0
    [<0000000055ccb011>] ret_from_fork+0x1f/0x30

[   61.841061][ T8438] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)