r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000000)='mountinfo\x00') r1 = socket$inet6_tcp(0xa, 0x1, 0x0) dup2(r1, r0) sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000100)={0x0, 0x0, 0xffffffffffffffff}, 0x0)