r1 = dup(0xffffffffffffffff)
dup2(r1, r0)
mknodat$loop(r0, &(0x7f0000000040)='./file1\x00', 0xc000, 0x0)
BUG: memory leak
unreferenced object 0xffff88800e63d000 (size 184):
  comm "syz-executor.7", pid 10523, jiffies 4295894861
  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 (crc 9630bf2e):
    [<00000000d3ec3d74>] kmem_cache_alloc_noprof+0x300/0x3d0
    [<0000000030783c60>] prepare_creds+0x2e/0x760
    [<00000000975860a7>] copy_creds+0x7a/0xa20
    [<000000002602ae69>] copy_process+0xf57/0x8e60
    [<00000000560db9d3>] kernel_clone+0xeb/0x850
    [<0000000035ea727c>] __do_sys_clone+0xba/0x100
    [<0000000064f64d19>] do_syscall_64+0xbf/0x1d0
    [<0000000092f4436e>] entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: memory leak
unreferenced object 0xffff88801671b5c0 (size 32):
  comm "syz-executor.7", pid 10523, jiffies 4295894861
  hex dump (first 32 bytes):
    01 00 00 00 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  ................
  backtrace (crc f06ff8b7):
    [<00000000e6b9d821>] __kmalloc_noprof+0x37e/0x4b0
    [<0000000071cfe61d>] security_prepare_creds+0x101/0x160
    [<00000000e22dad28>] prepare_creds+0x54e/0x760
    [<00000000975860a7>] copy_creds+0x7a/0xa20
    [<000000002602ae69>] copy_process+0xf57/0x8e60
    [<00000000560db9d3>] kernel_clone+0xeb/0x850
    [<0000000035ea727c>] __do_sys_clone+0xba/0x100
    [<0000000064f64d19>] do_syscall_64+0xbf/0x1d0
    [<0000000092f4436e>] entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: memory leak
unreferenced object 0xffff888018fd9440 (size 8):
  comm "syz-executor.7", pid 15448, jiffies 4295895049
  hex dump (first 8 bytes):
    ff ff ff ff ff ff ff ff                          ........
  backtrace (crc 44660075):
    [<000000005e77811a>] __kmalloc_cache_noprof+0x316/0x3e0
    [<00000000872e4c9c>] do_signalfd4+0x267/0x470
    [<00000000ed06a566>] __x64_sys_signalfd4+0x140/0x1c0
    [<0000000064f64d19>] do_syscall_64+0xbf/0x1d0
    [<0000000092f4436e>] entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: memory leak
unreferenced object 0xffff88803e0e48c0 (size 360):
  comm "syz-executor.7", pid 15448, jiffies 4295895049
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 ad 4e ad de  .............N..
    ff ff ff ff 00 00 00 00 ff ff ff ff ff ff ff ff  ................
  backtrace (crc 2638a584):
    [<00000000d3ec3d74>] kmem_cache_alloc_noprof+0x300/0x3d0
    [<00000000f9afc1b0>] alloc_empty_file+0x76/0x1e0
    [<00000000c5586ab8>] alloc_file_pseudo+0x139/0x200
    [<00000000073a3f86>] anon_inode_getfile+0xb4/0x1e0
    [<0000000034dba48b>] do_signalfd4+0x2fb/0x470
    [<00000000ed06a566>] __x64_sys_signalfd4+0x140/0x1c0
    [<0000000064f64d19>] do_syscall_64+0xbf/0x1d0
    [<0000000092f4436e>] entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: memory leak
unreferenced object 0xffff88800c469000 (size 16):
  comm "syz-executor.7", pid 15448, jiffies 4295895049
  hex dump (first 16 bytes):
    01 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 35cdddfe):
    [<00000000d3ec3d74>] kmem_cache_alloc_noprof+0x300/0x3d0
    [<0000000026a9d3e9>] security_file_alloc+0x35/0x130
    [<00000000059003ad>] init_file+0x95/0x490
    [<0000000088f3e8c5>] alloc_empty_file+0x94/0x1e0
    [<00000000c5586ab8>] alloc_file_pseudo+0x139/0x200
    [<00000000073a3f86>] anon_inode_getfile+0xb4/0x1e0
    [<0000000034dba48b>] do_signalfd4+0x2fb/0x470
    [<00000000ed06a566>] __x64_sys_signalfd4+0x140/0x1c0
    [<0000000064f64d19>] do_syscall_64+0xbf/0x1d0
    [<0000000092f4436e>] entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: leak checking failed