fork()
ptrace(0xffffffffffffffff, 0x0)
fork()
openat$procfs(0xffffffffffffff9c, &(0x7f0000000040)='/proc/tty/ldiscs\x00', 0x0, 0x0)
r0 = openat$sr(0xffffffffffffff9c, &(0x7f0000000440), 0x4840, 0x0)
ioctl$SG_GET_RESERVED_SIZE(r0, 0x2272, &(0x7f0000000000))