epoll_ctl$EPOLL_CTL_MOD(r6, 0x4, r7, &(0x7f0000000000))
r8 = openat$cdrom(0xffffffffffffff9c, &(0x7f0000000080), 0x2400, 0x0)
sendfile(r6, r8, &(0x7f00000000c0)=0x6, 0x9)
BUG: memory leak
unreferenced object 0xffff88800cb68360 (size 368):
  comm "syz-executor.3", pid 5283, jiffies 4295071832 (age 24.403s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    56 00 00 00 00 00 00 00 36 3d db 08 00 00 00 00  V.......6=......
  backtrace:
    [<00000000bbf9c0f9>] kmem_cache_zalloc include/linux/slab.h:705 [inline]
    [<00000000bbf9c0f9>] taskstats_tgid_alloc kernel/taskstats.c:561 [inline]
    [<00000000bbf9c0f9>] taskstats_exit+0x5c6/0xab0 kernel/taskstats.c:600
    [<000000008d5c7e1d>] do_exit+0x8a9/0x2830 kernel/exit.c:791
    [<00000000e8b246d7>] do_group_exit+0xd2/0x2f0 kernel/exit.c:935
    [<00000000e5727185>] __do_sys_exit_group kernel/exit.c:946 [inline]
    [<00000000e5727185>] __se_sys_exit_group kernel/exit.c:944 [inline]
    [<00000000e5727185>] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:944
    [<00000000b559ed4f>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<00000000b559ed4f>] do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
    [<00000000b965dd22>] entry_SYSCALL_64_after_hwframe+0x44/0xae

BUG: leak checking failed