executing program
BUG: memory leak
unreferenced object 0xffff88810e651a00 (size 232):
  comm "kworker/u4:2", pid 8451, jiffies 4294942100 (age 14.400s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    e0 bb 41 02 81 88 ff ff c0 36 55 0f 81 88 ff ff  ..A......6U.....
  backtrace:
    [<00000000892c6db6>] kmem_cache_zalloc include/linux/slab.h:672 [inline]
    [<00000000892c6db6>] __alloc_file+0x1f/0xf0 fs/file_table.c:101
    [<00000000383e9489>] alloc_empty_file+0x69/0x120 fs/file_table.c:150
    [<00000000bf4dcd51>] alloc_file+0x33/0x1b0 fs/file_table.c:192
    [<000000002270f6dc>] alloc_file_pseudo+0xb2/0x140 fs/file_table.c:232
    [<000000000ac87f5f>] create_pipe_files+0x138/0x2e0 fs/pipe.c:911
    [<00000000b6422708>] umd_setup+0x33/0x220 kernel/usermode_driver.c:104
    [<00000000132f6699>] call_usermodehelper_exec_async+0xb4/0x1b0 kernel/umh.c:101
    [<00000000c6c64598>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

BUG: memory leak
unreferenced object 0xffff88810e651500 (size 232):
  comm "kworker/u4:2", pid 8451, jiffies 4294942100 (age 14.400s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    e0 bb 41 02 81 88 ff ff 00 9f 53 0f 81 88 ff ff  ..A.......S.....
  backtrace:
    [<00000000892c6db6>] kmem_cache_zalloc include/linux/slab.h:672 [inline]
    [<00000000892c6db6>] __alloc_file+0x1f/0xf0 fs/file_table.c:101
    [<00000000383e9489>] alloc_empty_file+0x69/0x120 fs/file_table.c:150
    [<00000000bf4dcd51>] alloc_file+0x33/0x1b0 fs/file_table.c:192
    [<00000000c27d335c>] alloc_file_clone+0x22/0x70 fs/file_table.c:244
    [<0000000042579fb2>] create_pipe_files+0x182/0x2e0 fs/pipe.c:922
    [<00000000054def49>] umd_setup+0xad/0x220 kernel/usermode_driver.c:115
    [<00000000132f6699>] call_usermodehelper_exec_async+0xb4/0x1b0 kernel/umh.c:101
    [<00000000c6c64598>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

BUG: memory leak
unreferenced object 0xffff888101d38200 (size 120):
  comm "kworker/u4:2", pid 27, jiffies 4294942731 (age 8.090s)
  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:
    [<000000009c7b23a8>] alloc_pid+0x66/0x560 kernel/pid.c:180
    [<00000000d498f943>] copy_process+0x143b/0x25c0 kernel/fork.c:2113
    [<0000000017e349dc>] kernel_clone+0xf3/0x670 kernel/fork.c:2462
    [<0000000065d90fa5>] kernel_thread+0x61/0x80 kernel/fork.c:2514
    [<0000000068f2f35e>] call_usermodehelper_exec_work kernel/umh.c:172 [inline]
    [<0000000068f2f35e>] call_usermodehelper_exec_work+0xc4/0x120 kernel/umh.c:158
    [<0000000062953bb0>] process_one_work+0x2c9/0x600 kernel/workqueue.c:2275
    [<00000000e957fab4>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2421
    [<00000000b702b197>] kthread+0x178/0x1b0 kernel/kthread.c:292
    [<00000000c6c64598>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296