[  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 '10.128.0.226' (ECDSA) to the list of known hosts.
executing program
executing program
syzkaller login: [   76.994363][ T8414] kmemleak: 6 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
BUG: memory leak
unreferenced object 0xffff888101ce0b40 (size 168):
  comm "kworker/u4:4", pid 3180, jiffies 4294943718 (age 14.570s)
  hex dump (first 32 bytes):
    02 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:
    [<00000000ef620673>] prepare_creds+0x27/0x410
    [<000000004ff06369>] copy_creds+0x3a/0x230
    [<000000003a7a458a>] copy_process+0x6a3/0x25c0
    [<000000003af69da4>] kernel_clone+0xf3/0x670
    [<00000000348b3d89>] kernel_thread+0x61/0x80
    [<00000000bfe61243>] call_usermodehelper_exec_work+0xc4/0x120
    [<00000000bfddda2d>] process_one_work+0x2c9/0x600
    [<000000008b2e1531>] worker_thread+0x59/0x5d0
    [<0000000084170b1b>] kthread+0x178/0x1b0
    [<00000000216869f8>] ret_from_fork+0x1f/0x30

BUG: memory leak
unreferenced object 0xffff8881100196c0 (size 32):
  comm "kworker/u4:4", pid 3180, jiffies 4294943718 (age 14.570s)
  hex dump (first 32 bytes):
    b0 8e 93 00 81 88 ff ff 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:
    [<00000000a170e626>] security_prepare_creds+0x9f/0xc0
    [<00000000ded6bcf5>] prepare_creds+0x2c7/0x410
    [<000000004ff06369>] copy_creds+0x3a/0x230
    [<000000003a7a458a>] copy_process+0x6a3/0x25c0
    [<000000003af69da4>] kernel_clone+0xf3/0x670
    [<00000000348b3d89>] kernel_thread+0x61/0x80
    [<00000000bfe61243>] call_usermodehelper_exec_work+0xc4/0x120
    [<00000000bfddda2d>] process_one_work+0x2c9/0x600
    [<000000008b2e1531>] worker_thread+0x59/0x5d0
    [<0000000084170b1b>] kthread+0x178/0x1b0
    [<00000000216869f8>] ret_from_fork+0x1f/0x30

BUG: memory leak
unreferenced object 0xffff88811080b400 (size 232):
  comm "kworker/u4:4", pid 8416, jiffies 4294943718 (age 14.570s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    e0 17 04 01 81 88 ff ff 80 47 b9 0e 81 88 ff ff  .........G......
  backtrace:
    [<00000000716fb4b7>] __alloc_file+0x1f/0xf0
    [<00000000e0c60334>] alloc_empty_file+0x69/0x120
    [<000000009423c20d>] alloc_file+0x33/0x1b0
    [<00000000b904ef38>] alloc_file_pseudo+0xb2/0x140
    [<000000008cd44617>] create_pipe_files+0x138/0x2e0
    [<000000002e5a9162>] umd_setup+0x33/0x220
    [<000000008702c7e2>] call_usermodehelper_exec_async+0xb4/0x1b0
    [<00000000216869f8>] ret_from_fork+0x1f/0x30

BUG: memory leak
unreferenced object 0xffff888111b70ee8 (size 24):
  comm "kworker/u4:4", pid 8416, jiffies 4294943718 (age 14.570s)
  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:
    [<00000000c7615f70>] security_file_alloc+0x2a/0xb0
    [<000000008fbbbde2>] __alloc_file+0x5d/0xf0
    [<00000000e0c60334>] alloc_empty_file+0x69/0x120
    [<000000009423c20d>] alloc_file+0x33/0x1b0
    [<00000000b904ef38>] alloc_file_pseudo+0xb2/0x140
    [<000000008cd44617>] create_pipe_files+0x138/0x2e0
    [<000000002e5a9162>] umd_setup+0x33/0x220
    [<000000008702c7e2>] call_usermodehelper_exec_async+0xb4/0x1b0
    [<00000000216869f8>] ret_from_fork+0x1f/0x30

BUG: memory leak
unreferenced object 0xffff8881108c2800 (size 232):
  comm "kworker/u4:4", pid 8416, jiffies 4294943718 (age 14.570s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    e0 17 04 01 81 88 ff ff 00 46 b9 0e 81 88 ff ff  .........F......
  backtrace:
    [<00000000716fb4b7>] __alloc_file+0x1f/0xf0
    [<00000000e0c60334>] alloc_empty_file+0x69/0x120
    [<000000009423c20d>] alloc_file+0x33/0x1b0
    [<000000001888eecb>] alloc_file_clone+0x22/0x70
    [<000000003177b694>] create_pipe_files+0x182/0x2e0
    [<000000003b2e3de8>] umd_setup+0xad/0x220
    [<000000008702c7e2>] call_usermodehelper_exec_async+0xb4/0x1b0
    [<00000000216869f8>] ret_from_fork+0x1f/0x30

[   79.082118][ T8414] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)