r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup/cgroup.procs\x00', 0x2, 0x0)
getpid()
write$cgroup_pid(r0, &(0x7f00000000c0), 0x10)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup/cgroup.procs\x00', 0x2, 0x0)
r2 = getpid()
write$cgroup_pid(r1, &(0x7f00000000c0)=r2, 0x10)
pipe2(0x0, 0x0)
mount$9p_fd(0x0, 0x0, 0x0, 0x0, 0x0)
clone3(0x0, 0x0)
ioctl$BTRFS_IOC_INO_PATHS(0xffffffffffffffff, 0xc0389423, 0x0)
write$cgroup_pid(0xffffffffffffffff, 0x0, 0x0)